1------------------------------------------------------------------------------
2--                                                                          --
3--                         GNAT COMPILER COMPONENTS                         --
4--                                                                          --
5--                                E I N F O                                 --
6--                                                                          --
7--                                 S p e c                                  --
8--                                                                          --
9--          Copyright (C) 1992-2018, Free Software Foundation, Inc.         --
10--                                                                          --
11-- GNAT is free software;  you can  redistribute it  and/or modify it under --
12-- terms of the  GNU General Public License as published  by the Free Soft- --
13-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
14-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
15-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
16-- or FITNESS FOR A PARTICULAR PURPOSE.                                     --
17--                                                                          --
18-- As a special exception under Section 7 of GPL version 3, you are granted --
19-- additional permissions described in the GCC Runtime Library Exception,   --
20-- version 3.1, as published by the Free Software Foundation.               --
21--                                                                          --
22-- You should have received a copy of the GNU General Public License and    --
23-- a copy of the GCC Runtime Library Exception along with this program;     --
24-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
25-- <http://www.gnu.org/licenses/>.                                          --
26--                                                                          --
27-- GNAT was originally developed  by the GNAT team at  New York University. --
28-- Extensive contributions were provided by Ada Core Technologies Inc.      --
29--                                                                          --
30------------------------------------------------------------------------------
31
32with Snames; use Snames;
33with Types;  use Types;
34with Uintp;  use Uintp;
35with Urealp; use Urealp;
36
37package Einfo is
38
39--  This package defines the annotations to the abstract syntax tree that
40--  are needed to support semantic processing of an Ada compilation.
41
42--  Note that after editing this spec and the corresponding body it is
43--  required to run ceinfo to check the consistentcy of spec and body.
44--  See ceinfo.adb for more information about the checks made.
45
46--  These annotations are for the most part attributes of declared entities,
47--  and they correspond to conventional symbol table information. Other
48--  attributes include sets of meanings for overloaded names, possible
49--  types for overloaded expressions, flags to indicate deferred constants,
50--  incomplete types, etc. These attributes are stored in available fields in
51--  tree nodes (i.e. fields not used by the parser, as defined by the Sinfo
52--  package specification), and accessed by means of a set of subprograms
53--  which define an abstract interface.
54
55--  There are two kinds of semantic information
56
57--    First, the tree nodes with the following Nkind values:
58
59--      N_Defining_Identifier
60--      N_Defining_Character_Literal
61--      N_Defining_Operator_Symbol
62
63--    are called Entities, and constitute the information that would often
64--    be stored separately in a symbol table. These nodes are all extended
65--    to provide extra space, and contain fields which depend on the entity
66--    kind, as defined by the contents of the Ekind field. The use of the
67--    Ekind field, and the associated fields in the entity, are defined
68--    in this package, as are the access functions to these fields.
69
70--    Second, in some cases semantic information is stored directly in other
71--    kinds of nodes, e.g. the Etype field, used to indicate the type of an
72--    expression. The access functions to these fields are defined in the
73--    Sinfo package, but their full documentation is to be found in
74--    the Einfo package specification.
75
76--  Declaration processing places information in the nodes of their defining
77--  identifiers. Name resolution places in all other occurrences of an
78--  identifier a pointer to the corresponding defining occurrence.
79
80--------------------------------
81-- The XEINFO Utility Program --
82--------------------------------
83
84--  XEINFO is a utility program which automatically produces a C header file,
85--  einfo.h from the spec and body of package Einfo. It reads the input files
86--  einfo.ads and einfo.adb and produces the output file einfo.h. XEINFO is run
87--  automatically by the build scripts when you do a full bootstrap.
88
89--  In order for this utility program to operate correctly, the form of the
90--  einfo.ads and einfo.adb files must meet certain requirements and be laid
91--  out in a specific manner.
92
93--  The general form of einfo.ads is as follows:
94
95--     type declaration for type Entity_Kind
96--     subtype declarations declaring subranges of Entity_Kind
97--     subtype declarations declaring synonyms for some standard types
98--     function specs for attributes
99--     procedure specs
100--     pragma Inline declarations
101
102--  This order must be observed. There are no restrictions on the procedures,
103--  since the C header file only includes functions (The back end is not
104--  allowed to modify the generated tree). However, functions are required to
105--  have headers that fit on a single line.
106
107--  XEINFO reads and processes the function specs and the pragma Inlines. For
108--  functions that are declared as inlined, XEINFO reads the corresponding body
109--  from einfo.adb, and processes it into C code. This results in some strict
110--  restrictions on which functions can be inlined:
111
112--     The function spec must be on a single line
113
114--     There can only be a single statement, contained on a single line,
115--     not counting any pragma Assert statements.
116
117--     This single statement must either be a function call with simple,
118--     single token arguments, or it must be a membership test of the form
119--     a in b, where a and b are single tokens.
120
121--  For functions that are not inlined, there is no restriction on the body,
122--  and XEINFO generates a direct reference in the C header file which allows
123--  the C code in the backend to directly call the corresponding Ada body.
124
125----------------------------------
126-- Handling of Type'Size Values --
127----------------------------------
128
129--  The Ada 95 RM contains some rather peculiar (to us) rules on the value
130--  of type'Size (see RM 13.3(55)). We have found that attempting to use
131--  these RM Size values generally, and in particular for determining the
132--  default size of objects, creates chaos, and major incompatibilities in
133--  existing code.
134
135--  We proceed as follows, for discrete and fixed-point subtypes, we have
136--  two separate sizes for each subtype:
137
138--    The Object_Size, which is used for determining the default size of
139--    objects and components. This size value can be referred to using the
140--    Object_Size attribute. The phrase "is used" here means that it is
141--    the basis of the determination of the size. The backend is free to
142--    pad this up if necessary for efficiency, e.g. an 8-bit stand-alone
143--    character might be stored in 32 bits on a machine with no efficient
144--    byte access instructions such as the Alpha.
145
146--    The default rules for the value of Object_Size for fixed-point and
147--    discrete types are as follows:
148
149--       The Object_Size for base subtypes reflect the natural hardware
150--       size in bits (see Ttypes and Cstand for integer types). For
151--       enumeration and fixed-point base subtypes have 8, 16, 32, or 64
152--       bits for this size, depending on the range of values to be stored.
153
154--       The Object_Size of a subtype is the same as the Object_Size of
155--       the subtype from which it is obtained.
156
157--       The Object_Size of a derived base type is copied from the parent
158--       base type, and the Object_Size of a derived first subtype is copied
159--       from the parent first subtype.
160
161--    The Value_Size which is the number of bits required to store a value
162--    of the type. This size can be referred to using the Value_Size
163--    attribute. This value is used to determine how tightly to pack
164--    records or arrays with components of this type, and also affects
165--    the semantics of unchecked conversion (unchecked conversions where
166--    the Value_Size values differ generate a warning, and are potentially
167--    target dependent).
168
169--    The default rules for the value of Value_Size are as follows:
170
171--       The Value_Size for a base subtype is the minimum number of bits
172--       required to store all values of the type (including the sign bit
173--       only if negative values are possible).
174
175--       If a subtype statically matches the first subtype, then it has
176--       by default the same Value_Size as the first subtype. This is a
177--       consequence of RM 13.1(14) ("if two subtypes statically match,
178--       then their subtype-specific aspects are the same".)
179
180--       All other subtypes have a Value_Size corresponding to the minimum
181--       number of bits required to store all values of the subtype. For
182--       dynamic bounds, it is assumed that the value can range down or up
183--       to the corresponding bound of the ancestor.
184
185--    The RM defined attribute Size corresponds to the Value_Size attribute.
186
187--    The Size attribute may be defined for a first-named subtype. This sets
188--    the Value_Size of the first-named subtype to the given value, and the
189--    Object_Size of this first-named subtype to the given value padded up
190--    to an appropriate boundary. It is a consequence of the default rules
191--    above that this Object_Size will apply to all further subtypes. On the
192--    other hand, Value_Size is affected only for the first subtype, any
193--    dynamic subtypes obtained from it directly, and any statically matching
194--    subtypes. The Value_Size of any other static subtypes is not affected.
195
196--    Value_Size and Object_Size may be explicitly set for any subtype using
197--    an attribute definition clause. Note that the use of these attributes
198--    can cause the RM 13.1(14) rule to be violated. If two access types
199--    reference aliased objects whose subtypes have differing Object_Size
200--    values as a result of explicit attribute definition clauses, then it
201--    is erroneous to convert from one access subtype to the other.
202
203--    At the implementation level, Esize stores the Object_Size and the
204--    RM_Size field stores the Value_Size (and hence the value of the
205--    Size attribute, which, as noted above, is equivalent to Value_Size).
206
207--  To get a feel for the difference, consider the following examples (note
208--  that in each case the base is short_short_integer with a size of 8):
209
210--                                            Object_Size     Value_Size
211
212--     type x1 is range 0..5;                      8               3
213
214--     type x2 is range 0..5;
215--     for x2'size use 12;                        16              12
216
217--     subtype x3 is x2 range 0 .. 3;             16               2
218
219--     subtype x4 is x2'base range 0 .. 10;        8               4
220
221--     dynamic : x2'Base range -64 .. +63;
222
223--     subtype x5 is x2 range 0 .. dynamic;       16               3*
224
225--     subtype x6 is x2'base range 0 .. dynamic;   8               7*
226
227--  Note: the entries marked * are not actually specified by the Ada 95 RM,
228--  but it seems in the spirit of the RM rules to allocate the minimum number
229--  of bits known to be large enough to hold the given range of values.
230
231--  So far, so good, but GNAT has to obey the RM rules, so the question is
232--  under what conditions must the RM Size be used. The following is a list
233--  of the occasions on which the RM Size must be used:
234
235--    Component size for packed arrays or records
236--    Value of the attribute Size for a type
237--    Warning about sizes not matching for unchecked conversion
238
239--  The RM_Size field keeps track of the RM Size as needed in these
240--  three situations.
241
242--  For elementary types other than discrete and fixed-point types, the
243--  Object_Size and Value_Size are the same (and equivalent to the RM
244--  attribute Size). Only Size may be specified for such types.
245
246--  For composite types, Object_Size and Value_Size are computed from their
247--  respective value for the type of each element as well as the layout.
248
249--  All size attributes are stored as Uint values. Negative values are used to
250--  reference GCC expressions for the case of non-static sizes, as explained
251--  in Repinfo.
252
253--------------------------------------
254-- Delayed Freezing and Elaboration --
255--------------------------------------
256
257--  The flag Has_Delayed_Freeze indicates that an entity carries an explicit
258--  freeze node, which appears later in the expanded tree.
259
260--  a) The flag is used by the front-end to trigger expansion actions which
261--  include the generation of that freeze node. Typically this happens at the
262--  end of the current compilation unit, or before the first subprogram body is
263--  encountered in the current unit. See files freeze and exp_ch13 for details
264--  on the actions triggered by a freeze node, which include the construction
265--  of initialization procedures and dispatch tables.
266
267--  b) The presence of a freeze node on an entity is used by the backend to
268--  defer elaboration of the entity until its freeze node is seen. In the
269--  absence of an explicit freeze node, an entity is frozen (and elaborated)
270--  at the point of declaration.
271
272--  For object declarations, the flag is set when an address clause for the
273--  object is encountered. Legality checks on the address expression only take
274--  place at the freeze point of the object.
275
276--  Most types have an explicit freeze node, because they cannot be elaborated
277--  until all representation and operational items that apply to them have been
278--  analyzed. Private types and incomplete types have the flag set as well, as
279--  do task and protected types.
280
281--  Implicit base types created for type derivations, as well as classwide
282--  types created for all tagged types, have the flag set.
283
284--  If a subprogram has an access parameter whose designated type is incomplete
285--  the subprogram has the flag set.
286
287-----------------------
288-- Entity Attributes --
289-----------------------
290
291--  This section contains a complete list of the attributes that are defined
292--  on entities. Some attributes apply to all entities, others only to certain
293--  kinds of entities. In the latter case the attribute should only be set or
294--  accessed if the Ekind field indicates an appropriate entity.
295
296--  There are two kinds of attributes that apply to entities, stored and
297--  synthesized. Stored attributes correspond to a field or flag in the entity
298--  itself. Such attributes are identified in the table below by giving the
299--  field or flag in the attribute that is used to hold the attribute value.
300--  Synthesized attributes are not stored directly, but are rather computed as
301--  needed from other attributes, or from information in the tree. These are
302--  marked "synthesized" in the table below. The stored attributes have both
303--  access functions and set procedures to set the corresponding values, while
304--  synthesized attributes have only access functions.
305
306--  Note: in the case of Node, Uint, or Elist fields, there are cases where the
307--  same physical field is used for different purposes in different entities,
308--  so these access functions should only be referenced for the class of
309--  entities in which they are defined as being present. Flags are not
310--  overlapped in this way, but nevertheless as a matter of style and
311--  abstraction (which may or may not be checked by assertions in the
312--  body), this restriction should be observed for flag fields as well.
313
314--  Note: certain of the attributes on types apply only to base types, and
315--  are so noted by the notation [base type only]. These are cases where the
316--  attribute of any subtype is the same as the attribute of the base type.
317--  The attribute can be referenced on a subtype (and automatically retrieves
318--  the value from the base type). However, it is an error to try to set the
319--  attribute on other than the base type, and if assertions are enabled,
320--  an attempt to set the attribute on a subtype will raise an assert error.
321
322--  Other attributes are noted as applying to the [implementation base type
323--  only].  These are representation attributes which must always apply to a
324--  full non-private type, and where the attributes are always on the full
325--  type. The attribute can be referenced on a subtype (and automatically
326--  retrieves the value from the implementation base type). However, it is an
327--  error to try to set the attribute on other than the implementation base
328--  type, and if assertions are enabled, an attempt to set the attribute on a
329--  subtype will raise an assert error.
330
331--    Abstract_States (Elist25)
332--       Defined for E_Package entities. Contains a list of all the abstract
333--       states declared by the related package.
334
335--    Accept_Address (Elist21)
336--       Defined in entries. If an accept has a statement sequence, then an
337--       address variable is created, which is used to hold the address of the
338--       parameters, as passed by the runtime. Accept_Address holds an element
339--       list which represents a stack of entities for these address variables.
340--       The current entry is the top of the stack, which is the last element
341--       on the list. A stack is required to handle the case of nested select
342--       statements referencing the same entry.
343
344--    Access_Disp_Table (Elist16) [implementation base type only]
345--       Defined in E_Record_Type and E_Record_Subtype entities. Set in tagged
346--       types to point to their dispatch tables. The first two entities are
347--       associated with the primary dispatch table: 1) primary dispatch table
348--       with user-defined primitives 2) primary dispatch table with predefined
349--       primitives. For each interface type covered by the tagged type we also
350--       have: 3) secondary dispatch table with thunks of primitives covering
351--       user-defined interface primitives, 4) secondary dispatch table with
352--       thunks of predefined primitives, 5) secondary dispatch table with user
353--       defined primitives, and 6) secondary dispatch table with predefined
354--       primitives. The last entity of this list is an access type declaration
355--       used to expand dispatching calls through the primary dispatch table.
356--       For an untagged record, contains No_Elist.
357
358--    Access_Disp_Table_Elab_Flag (Node30) [implementation base type only]
359--       Defined in E_Record_Type and E_Record_Subtype entities. Set in tagged
360--       types whose dispatch table elaboration must be completed at run time
361--       by the IP routine to point to its pending elaboration flag entity.
362--       This flag is needed when the elaboration of the dispatch table relies
363--       on attribute 'Position applied to an object of the type; it is used by
364--       the IP routine to avoid performing this elaboration twice.
365
366--    Activation_Record_Component (Node31)
367--       Defined in E_Variable, E_Constant, E_Discriminant, E_Loop_Parameter,
368--       E_In_Parameter, E_Out_Parameter, E_In_Out_Parameter nodes. Used only
369--       if we are in Opt.Unnest_Subprogram_Mode, in which case for the case of
370--       an uplevel referenced entity, this field contains the entity for the
371--       component in the generated ARECnT activation record (Exp_Unst for
372--       details).
373
374--    Actual_Subtype (Node17)
375--       Defined in variables, constants, and formal parameters. This is the
376--       subtype imposed by the value of the object, as opposed to its nominal
377--       subtype, which is imposed by the declaration. The actual subtype
378--       differs from the nominal one when the latter is indefinite (as in the
379--       case of an unconstrained formal parameter, or a variable declared
380--       with an unconstrained type and an initial value). The nominal subtype
381--       is the Etype entry for the entity. The Actual_Subtype field is set
382--       only if the actual subtype differs from the nominal subtype. If the
383--       actual and nominal subtypes are the same, then the Actual_Subtype
384--       field is Empty, and Etype indicates both types.
385--
386--       For objects, the Actual_Subtype is set only if this is a discriminated
387--       type. For arrays, the bounds of the expression are obtained and the
388--       Etype of the object is directly the constrained subtype. This is
389--       rather irregular, and the semantic checks that depend on the nominal
390--       subtype being unconstrained use flag Is_Constr_Subt_For_U_Nominal(qv).
391
392--    Address_Clause (synthesized)
393--       Applies to entries, objects and subprograms. Set if an address clause
394--       is present which references the object or subprogram and points to
395--       the N_Attribute_Definition_Clause node. Empty if no Address clause.
396--       The expression in the address clause is always a constant that is
397--       defined before the entity to which the address clause applies.
398--       Note: The backend references this field in E_Task_Type entities???
399
400--    Address_Taken (Flag104)
401--       Defined in all entities. Set if the Address or Unrestricted_Access
402--       attribute is applied directly to the entity, i.e. the entity is the
403--       entity of the prefix of the attribute reference. Also set if the
404--       entity is the second argument of an Asm_Input or Asm_Output attribute,
405--       as the construct may entail taking its address. And also set if the
406--       entity is a subprogram and the Access or Unchecked_Access attribute is
407--       applied. Used by the backend to make sure that the address can be
408--       meaningfully taken, and also in the case of subprograms to control
409--       output of certain warnings.
410
411--    Aft_Value (synthesized)
412--       Applies to fixed and decimal types. Computes a universal integer that
413--       holds value of the Aft attribute for the type.
414
415--    Alias (Node18)
416--       Defined in overloadable entities (literals, subprograms, entries) and
417--       subprograms that cover a primitive operation of an abstract interface
418--       (that is, subprograms with the Interface_Alias attribute). In case of
419--       overloaded entities it points to the parent subprogram of a derived
420--       subprogram. In case of abstract interface subprograms it points to the
421--       subprogram that covers the abstract interface primitive. Also used for
422--       a subprogram renaming, where it points to the renamed subprogram. For
423--       an inherited operation (of a type extension) that is overridden in a
424--       private part, the Alias is the overriding operation. In this fashion a
425--       call from outside the package ends up executing the new body even if
426--       non-dispatching, and a call from inside calls the overriding operation
427--       because it hides the implicit one. Alias is always empty for entries.
428
429--    Alignment (Uint14)
430--       Defined in entities for types and also in constants, variables
431--       (including exceptions where it refers to the static data allocated for
432--       an exception), loop parameters, and formal parameters. This indicates
433--       the desired alignment for a type, or the actual alignment for an
434--       object. A value of zero (Uint_0) indicates that the alignment has not
435--       been set yet. The alignment can be set by an explicit alignment
436--       clause, or set by the front-end in package Layout, or set by the
437--       back-end as part of the back-end back-annotation process. The
438--       alignment field is also defined in E_Exception entities, but there it
439--       is used only by the back-end for back annotation.
440
441--    Alignment_Clause (synthesized)
442--       Applies to all entities for types and objects. If an alignment
443--       attribute definition clause is present for the entity, then this
444--       function returns the N_Attribute_Definition clause that specifies the
445--       alignment. If no alignment clause applies to the type, then the call
446--       to this function returns Empty. Note that the call can return a
447--       non-Empty value even if Has_Alignment_Clause is not set (happens with
448--       subtype and derived type declarations). Note also that a record
449--       definition clause with an (obsolescent) mod clause is converted
450--       into an attribute definition clause for this purpose.
451
452--    Anonymous_Designated_Type (Node35)
453--       Defined in variables which represent anonymous finalization masters.
454--       Contains the designated type which is being serviced by the master.
455
456--    Anonymous_Masters (Elist29)
457--       Defined in packages, subprograms, and subprogram bodies. Contains a
458--       list of anonymous finalization masters declared within the related
459--       unit. The list acts as a mapping between a master and a designated
460--       type.
461
462--    Anonymous_Object (Node30)
463--       Present in protected and task type entities. Contains the entity of
464--       the anonymous object created for a single protected or task type.
465
466--    Associated_Entity (Node37)
467--       Defined in all entities. This field is similar to Associated_Node, but
468--       applied to entities. The attribute links an entity from the generic
469--       template with its corresponding entity in the analyzed generic copy.
470--       The global references mechanism relies on the Associated_Entity to
471--       infer the context.
472
473--    Associated_Formal_Package (Node12)
474--       Defined in packages that are the actuals of formal_packages. Points
475--       to the entity in the declaration for the formal package.
476
477--    Associated_Node_For_Itype (Node8)
478--       Defined in all type and subtype entities. Set non-Empty only for
479--       Itypes. Set to point to the associated node for the Itype, i.e.
480--       the node whose elaboration generated the Itype. This is used for
481--       copying trees, to determine whether or not to copy an Itype, and
482--       also for accessibility checks on anonymous access types. This
483--       node is typically an object declaration, component declaration,
484--       type or subtype declaration.
485
486--       For an access discriminant in a type declaration, the associated_
487--       node_for_itype is the corresponding discriminant specification.
488
489--       For an access parameter it is the enclosing subprogram declaration.
490
491--       For an access_to_protected_subprogram parameter it is the declaration
492--       of the corresponding formal parameter.
493--
494--       Itypes have no explicit declaration, and therefore are not attached to
495--       the tree: their Parent field is always empty. The Associated_Node_For_
496--       Itype is the only way to determine the construct that leads to the
497--       creation of a given itype entity.
498
499--    Associated_Storage_Pool (Node22) [root type only]
500--       Defined in simple and general access type entities. References the
501--       storage pool to be used for the corresponding collection. A value of
502--       Empty means that the default pool is to be used. This is defined
503--       only in the root type, since derived types must have the same pool
504--       as the parent type.
505
506--    Barrier_Function (Node12)
507--       Defined in protected entries and entry families. This is the
508--       subprogram declaration for the body of the function that returns
509--       the value of the entry barrier.
510
511--    Base_Type (synthesized)
512--       Applies to all type and subtype entities. Returns the base type of a
513--       type or subtype. The base type of a type is the type itself. The base
514--       type of a subtype is the type that it constrains (which is always
515--       a type entity, not some other subtype). Note that in the case of a
516--       subtype of a private type, it is possible for the base type attribute
517--       to return a private type, even if the subtype to which it applies is
518--       non-private. See also Implementation_Base_Type. Note: it is allowed to
519--       apply Base_Type to other than a type, in which case it simply returns
520--       the entity unchanged.
521
522--    Block_Node (Node11)
523--       Defined in block entities. Points to the identifier in the
524--       Block_Statement itself. Used when retrieving the block construct
525--       for finalization purposes, The block entity has an implicit label
526--       declaration in the enclosing declarative part, and has otherwise
527--       no direct connection in the tree with the block statement. The
528--       link is to the identifier (which is an occurrence of the entity)
529--       and not to the block_statement itself, because the statement may
530--       be rewritten, e.g. in the process of removing dead code.
531
532--    Body_Entity (Node19)
533--       Defined in package and generic package entities, points to the
534--       corresponding package body entity if one is present.
535
536--    Body_Needed_For_SAL (Flag40)
537--       Defined in package and subprogram entities that are compilation
538--       units. Indicates that the source for the body must be included
539--       when the unit is part of a standalone library.
540
541--    Body_Needed_For_Inlining (Flag299)
542--       Defined in package entities that are compilation units. Used to
543--       determine whether the body unit needs to be compiled when the
544--       package declaration appears in the list of units to inline. A body
545--       is needed for inline processing if the unit declaration contains
546--       functions that carry pragma Inline or Inline_Always, or if it
547--       contains a generic unit that requires a body.
548--
549--    Body_References (Elist16)
550--       Defined in abstract state entities. Contains an element list of
551--       references (identifiers) that appear in a package body whose spec
552--       defines the related state. If the body refines the said state, all
553--       references on this list are illegal due to the visible refinement.
554
555--    BIP_Initialization_Call (Node29)
556--       Defined in constants and variables whose corresponding declaration
557--       is wrapped in a transient block and the inital value is provided by
558--       a build-in-place function call. Contains the relocated build-in-place
559--       call after the expansion has decoupled the call from the object. This
560--       attribute is used by the finalization machinery to insert cleanup code
561--       for all additional transient objects found in the transient block.
562
563--    C_Pass_By_Copy (Flag125) [implementation base type only]
564--       Defined in record types. Set if a pragma Convention for the record
565--       type specifies convention C_Pass_By_Copy. This convention name is
566--       treated as identical in all respects to convention C, except that
567--       if it is specified for a record type, then the C_Pass_By_Copy flag
568--       is set, and if a foreign convention subprogram has a formal of the
569--       corresponding type, then the parameter passing mechanism will be
570--       set to By_Copy (unless specifically overridden by an Import or
571--       Export pragma).
572
573--    Can_Never_Be_Null (Flag38)
574--       This flag is defined in all entities. It is set in an object which can
575--       never have a null value. Set for constant access values initialized to
576--       a non-null value. This is also set for all access parameters in Ada 83
577--       and Ada 95 modes, and for access parameters that explicitly exclude
578--       exclude null in Ada 2005 mode.
579--
580--       This is used to avoid unnecessary resetting of the Is_Known_Non_Null
581--       flag for such entities. In Ada 2005 mode, this is also used when
582--       determining subtype conformance of subprogram profiles to ensure
583--       that two formals have the same null-exclusion status.
584--
585--       This is also set on some access types, e.g. the Etype of the anonymous
586--       access type of a controlling formal.
587
588--    Can_Use_Internal_Rep (Flag229) [base type only]
589--       Defined in Access_Subprogram_Kind nodes. This flag is set by the
590--       front end and used by the backend. False means that the backend
591--       must represent the type in the same way as Convention-C types (and
592--       other foreign-convention types). On many targets, this means that
593--       the backend will use dynamically generated trampolines for nested
594--       subprograms. True means that the backend can represent the type in
595--       some internal way. On the aforementioned targets, this means that the
596--       backend will not use dynamically generated trampolines. This flag
597--       must be False if Has_Foreign_Convention is True; otherwise, the front
598--       end is free to set the policy.
599--
600--       Setting this False in all cases corresponds to the traditional back
601--       end strategy, where all access-to-subprogram types are represented the
602--       same way, independent of the Convention. For further details, see also
603--       Always_Compatible_Rep in Targparm.
604--
605--       Efficiency note: On targets that use dynamically generated
606--       trampolines, False generally favors efficiency of top-level
607--       subprograms, whereas True generally favors efficiency of nested
608--       ones. On other targets, this flag has little or no effect on
609--       efficiency. The front end should take this into account. In
610--       particular, pragma Favor_Top_Level gives a hint that the flag
611--       should be False.
612--
613--       Note: We considered using Convention-C for this purpose, but we need
614--       this separate flag, because Convention-C implies that in the case of
615--       P'[Unrestricted_]Access, P also have convention C. Sometimes we want
616--       to have Can_Use_Internal_Rep False for an access type, but allow P to
617--       have convention Ada.
618
619--    Chars (Name1)
620--       Defined in all entities. This field contains an entry into the names
621--       table that has the character string of the identifier, character
622--       literal or operator symbol. See Namet for further details. Note that
623--       throughout the processing of the front end, this name is the simple
624--       unqualified name. However, just before the backend is called, a call
625--       is made to Qualify_All_Entity_Names. This causes entity names to be
626--       qualified using the encoding described in exp_dbug.ads, and from that
627--       point (including post backend steps, e.g. cross-reference generation),
628--       the entities will contain the encoded qualified names.
629
630--    Checks_May_Be_Suppressed (Flag31)
631--       Defined in all entities. Set if a pragma Suppress or Unsuppress
632--       mentions the entity specifically in the second argument. If this
633--       flag is set the Global_Entity_Suppress and Local_Entity_Suppress
634--       tables must be consulted to determine if there actually is an active
635--       Suppress or Unsuppress pragma that applies to the entity.
636
637--    Class_Wide_Clone (Node38)
638--       Defined on subprogram entities. Set if the subprogram has a class-wide
639--       ore- or postcondition, and the expression contains calls to other
640--       primitive funtions of the type. Used to implement properly the
641--       semantics of inherited operations whose class-wide condition may
642--       be different from that of the ancestor (See AI012-0195).
643
644--    Class_Wide_Type (Node9)
645--       Defined in all type entities. For a tagged type or subtype, returns
646--       the corresponding implicitly declared class-wide type. For a
647--       class-wide type, returns itself. Set to Empty for untagged types.
648
649--    Cloned_Subtype (Node16)
650--       Defined in E_Record_Subtype and E_Class_Wide_Subtype entities.
651--       Each such entity can either have a Discriminant_Constraint, in
652--       which case it represents a distinct type from the base type (and
653--       will have a list of components and discriminants in the list headed by
654--       First_Entity) or else no such constraint, in which case it will be a
655--       copy of the base type.
656--
657--       o  Each element of the list in First_Entity is copied from the base
658--          type; in that case, this field is Empty.
659--
660--       o  The list in First_Entity is shared with the base type; in that
661--          case, this field points to that entity.
662--
663--       A record or classwide subtype may also be a copy of some other
664--       subtype and share the entities in the First_Entity with that subtype.
665--       In that case, this field points to that subtype.
666--
667--       For E_Class_Wide_Subtype, the presence of Equivalent_Type overrides
668--       this field. Note that this field ONLY appears in subtype entries, not
669--       in type entries, it is not defined, and it is an error to reference
670--       Cloned_Subtype in an E_Record_Type or E_Class_Wide_Type entity.
671
672--    Comes_From_Source
673--       This flag appears on all nodes, including entities, and indicates
674--       that the node was created by the scanner or parser from the original
675--       source. Thus for entities, it indicates that the entity is defined
676--       in the original source program.
677
678--    Component_Alignment (special field) [base type only]
679--       Defined in array and record entities. Contains a value of type
680--       Component_Alignment_Kind indicating the alignment of components.
681--       Set to Calign_Default normally, but can be overridden by use of
682--       the Component_Alignment pragma. Note: this field is currently
683--       stored in a non-standard way, see body for details.
684
685--    Component_Bit_Offset (Uint11)
686--       Defined in record components (E_Component, E_Discriminant). First
687--       bit position of given component, computed from the first bit and
688--       position values given in the component clause. A value of No_Uint
689--       means that the value is not yet known. The value can be set by the
690--       appearance of an explicit component clause in a record representation
691--       clause, or it can be set by the front-end in package Layout, or it can
692--       be set by the backend. By the time backend processing is completed,
693--       this field is always set. A negative value is used to represent
694--       a value which is not known at compile time, and must be computed
695--       at run-time (this happens if fields of a record have variable
696--       lengths). See package Layout for details of these values.
697--
698--       Note: Component_Bit_Offset is redundant with respect to the fields
699--       Normalized_First_Bit and Normalized_Position, and could in principle
700--       be eliminated, but it is convenient in several situations, including
701--       use in the backend, to have this redundant field.
702
703--    Component_Clause (Node13)
704--       Defined in record components and discriminants. If a record
705--       representation clause is present for the corresponding record type a
706--       that specifies a position for the component, then the Component_Clause
707--       field of the E_Component entity points to the N_Component_Clause node.
708--       Set to Empty if no record representation clause was present, or if
709--       there was no specification for this component.
710
711--    Component_Size (Uint22) [implementation base type only]
712--       Defined in array types. It contains the component size value for
713--       the array. A value of No_Uint means that the value is not yet set.
714--       The value can be set by the use of a component size clause, or
715--       by the front end in package Layout, or by the backend. A negative
716--       value is used to represent a value which is not known at compile
717--       time, and must be computed at run-time (this happens if the type
718--       of the component has a variable length size). See package Layout
719--       for details of these values.
720
721--    Component_Type (Node20) [implementation base type only]
722--       Defined in array types and string types. References component type.
723
724--    Contains_Ignored_Ghost_Code (Flag279)
725--       Defined in blocks, packages and their bodies, subprograms and their
726--       bodies. Set if the entity contains any ignored Ghost code in the form
727--       of declaration, procedure call, assignment statement or pragma.
728
729--    Contract (Node34)
730--       Defined in constant, entry, entry family, operator, [generic] package,
731--       package body, protected type, [generic] subprogram, subprogram body,
732--       variable and task type entities. Points to the contract of the entity,
733--       holding various assertion items and data classifiers.
734
735--    Contract_Wrapper (Node25)
736--       Defined in entry and entry family entities. Set only when the entry
737--       [family] has contract cases, preconditions, and/or postconditions.
738--       Contains the entity of a wrapper procedure which encapsulates the
739--       original entry and implements precondition/postcondition semantics.
740
741--    Corresponding_Concurrent_Type (Node18)
742--       Defined in record types that are constructed by the expander to
743--       represent task and protected types (Is_Concurrent_Record_Type flag
744--       set). Points to the entity for the corresponding task type or the
745--       protected type.
746
747--    Corresponding_Discriminant (Node19)
748--       Defined in discriminants of a derived type, when the discriminant is
749--       used to constrain a discriminant of the parent type. Points to the
750--       corresponding discriminant in the parent type. Otherwise it is Empty.
751
752--    Corresponding_Equality (Node30)
753--       Defined in function entities for implicit inequality operators.
754--       Denotes the explicit or derived equality operation that creates
755--       the implicit inequality. Note that this field is not present in
756--       other function entities, only in implicit inequality routines,
757--       where Comes_From_Source is always False.
758
759--    Corresponding_Function (Node32)
760--       Defined on procedures internally built with an extra out parameter
761--       to return a constrained array type, when Modify_Tree_For_C is set.
762--       Denotes the function that returns the constrained array type for
763--       which this procedure was built.
764
765--    Corresponding_Procedure (Node32)
766--       Defined on functions that return a constrained array type, when
767--       Modify_Tree_For_C is set. Denotes the internally built procedure
768--       with an extra out parameter created for it.
769
770--    Corresponding_Protected_Entry (Node18)
771--       Defined in subprogram bodies. Set for subprogram bodies that implement
772--       a protected type entry to point to the entity for the entry.
773
774--    Corresponding_Record_Component (Node21)
775--       Defined in components of a derived untagged record type, including
776--       discriminants. For a regular component or a girder discriminant,
777--       points to the corresponding component in the parent type. Set to
778--       Empty for a non-girder discriminant. It is used by the back end to
779--       ensure the layout of the derived type matches that of the parent
780--       type when there is no representation clause on the derived type.
781
782--    Corresponding_Record_Type (Node18)
783--       Defined in protected and task types and subtypes. References the
784--       entity for the corresponding record type constructed by the expander
785--       (see Exp_Ch9). This type is used to represent values of the task type.
786
787--    Corresponding_Remote_Type (Node22)
788--       Defined in record types that describe the fat pointer structure for
789--       Remote_Access_To_Subprogram types. References the original access
790--       to subprogram type.
791
792--    CR_Discriminant (Node23)
793--       Defined in discriminants of concurrent types. Denotes the homologous
794--       discriminant of the corresponding record type. The CR_Discriminant is
795--       created at the same time as the discriminal, and used to replace
796--       occurrences of the discriminant within the type declaration.
797
798--    Current_Use_Clause (Node27)
799--       Defined in packages and in types. For packages, denotes the use
800--       package clause currently in scope that makes the package use_visible.
801--       For types, it denotes the use_type clause that makes the operators of
802--       the type visible. Used for more precise warning messages on redundant
803--       use clauses.
804
805--    Current_Value (Node9)
806--       Defined in all object entities. Set in E_Variable, E_Constant, formal
807--       parameters and E_Loop_Parameter entities if we have trackable current
808--       values. Set non-Empty if the (constant) current value of the variable
809--       is known, This value is valid only for references from the same
810--       sequential scope as the entity. The sequential scope of an entity
811--       includes the immediate scope and any contained scopes that are package
812--       specs, package bodies, blocks (at any nesting level) or statement
813--       sequences in IF or loop statements.
814--
815--       Another related use of this field is to record information about the
816--       value obtained from an IF or WHILE statement condition. If the IF or
817--       ELSIF or WHILE condition has the form "NOT {,NOT] OBJ RELOP VAL ",
818--       or OBJ [AND [THEN]] expr, where OBJ refers to an entity with a
819--       Current_Value field, RELOP is one of the six relational operators, and
820--       VAL is a compile-time known value then the Current_Value field of OBJ
821--       points to the N_If_Statement, N_Elsif_Part, or N_Iteration_Scheme node
822--       of the relevant construct, and the Condition field of this can be
823--       consulted to give information about the value of OBJ. For more details
824--       on this usage, see the procedure Exp_Util.Get_Current_Value_Condition.
825
826--    Debug_Info_Off (Flag166)
827--       Defined in all entities. Set if a pragma Suppress_Debug_Info applies
828--       to the entity, or if internal processing in the compiler determines
829--       that suppression of debug information is desirable. Note that this
830--       flag is only for use by the front end as part of the processing for
831--       determining if Needs_Debug_Info should be set. The backend should
832--       always test Needs_Debug_Info, it should never test Debug_Info_Off.
833
834--    Debug_Renaming_Link (Node25)
835--       Used to link the variable associated with a debug renaming declaration
836--       to the renamed entity. See Exp_Dbug.Debug_Renaming_Declaration for
837--       details of the use of this field.
838
839--    Declaration_Node (synthesized)
840--       Applies to all entities. Returns the tree node for the construct that
841--       declared the entity. Normally this is just the Parent of the entity.
842--       One exception arises with child units, where the parent of the entity
843--       is a selected component/defining program unit name. Another exception
844--       is that if the entity is an incomplete type that has been completed or
845--       a private type, then we obtain the declaration node denoted by the
846--       full type, i.e. the full type declaration node. Also note that for
847--       subprograms, this returns the {function,procedure}_specification, not
848--       the subprogram_declaration.
849
850--    Default_Aspect_Component_Value (Node19) [base type only]
851--       Defined in array types. Holds the static value specified in a
852--       Default_Component_Value aspect specification for the array type,
853--       or inherited on derivation.
854
855--    Default_Aspect_Value (Node19) [base type only]
856--       Defined in scalar types. Holds the static value specified in a
857--       Default_Value aspect specification for the type, or inherited
858--       on derivation.
859
860--    Default_Expr_Function (Node21)
861--       Defined in parameters. It holds the entity of the parameterless
862--       function that is built to evaluate the default expression if it is
863--       more complex than a simple identifier or literal. For the latter
864--       simple cases or if there is no default value, this field is Empty.
865
866--    Default_Expressions_Processed (Flag108)
867--       A flag in subprograms (functions, operators, procedures) and in
868--       entries and entry families used to indicate that default expressions
869--       have been processed and to avoid multiple calls to process the
870--       default expressions (see Freeze.Process_Default_Expressions), which
871--       would not only waste time, but also generate false error messages.
872
873--    Default_Value (Node20)
874--       Defined in formal parameters. Points to the node representing the
875--       expression for the default value for the parameter. Empty if the
876--       parameter has no default value (which is always the case for OUT
877--       and IN OUT parameters in the absence of errors).
878
879--    Delay_Cleanups (Flag114)
880--       Defined in entities that have finalization lists (subprograms
881--       blocks, and tasks). Set if there are pending generic body
882--       instantiations for the corresponding entity. If this flag is
883--       set, then generation of cleanup actions for the corresponding
884--       entity must be delayed, since the insertion of the generic body
885--       may affect cleanup generation (see Inline for further details).
886
887--    Delay_Subprogram_Descriptors (Flag50)
888--       Defined in entities for which exception subprogram descriptors
889--       are generated (subprograms, package declarations and package
890--       bodies). Defined if there are pending generic body instantiations
891--       for the corresponding entity. If this flag is set, then generation
892--       of the subprogram descriptor for the corresponding enities must
893--       be delayed, since the insertion of the generic body may add entries
894--       to the list of handlers.
895--
896--       Note: for subprograms, Delay_Subprogram_Descriptors is set if and
897--       only if Delay_Cleanups is set. But Delay_Cleanups can be set for a
898--       a block (in which case Delay_Subprogram_Descriptors is set for the
899--       containing subprogram). In addition Delay_Subprogram_Descriptors is
900--       set for a library level package declaration or body which contains
901--       delayed instantiations (in this case the descriptor refers to the
902--       enclosing elaboration procedure).
903
904--    Delta_Value (Ureal18)
905--       Defined in fixed and decimal types. Points to a universal real
906--       that holds value of delta for the type, as given in the declaration
907--       or as inherited by a subtype or derived type.
908
909--    Dependent_Instances (Elist8)
910--       Defined in packages that are instances. Holds list of instances
911--       of inner generics. Used to place freeze nodes for those instances
912--       after that of the current one, i.e. after the corresponding generic
913--       bodies.
914
915--    Depends_On_Private (Flag14)
916--       Defined in all type entities. Set if the type is private or if it
917--       depends on a private type.
918
919--    Derived_Type_Link (Node31)
920--       Defined in all type and subtype entries. Set in a base type if
921--       a derived type declaration is encountered which derives from
922--       this base type or one of its subtypes, and there are already
923--       primitive operations declared. In this case, it references the
924--       entity for the type declared by the derived type declaration.
925--       For example:
926--
927--          type R is ...
928--          subtype RS is R ...
929--          ...
930--          type G is new RS ...
931--
932--       In this case, if primitive operations have been declared for R, at
933--       the point of declaration of G, then the Derived_Type_Link of R is set
934--       to point to the entity for G. This is used to generate warnings for
935--       rep clauses that appear later on for R, which might result in an
936--       unexpected implicit conversion operation.
937--
938--       Note: if there is more than one such derived type, the link will point
939--       to the last one (this is only used in generating warning messages).
940
941--    Designated_Type (synthesized)
942--       Applies to access types. Returns the designated type. Differs from
943--       Directly_Designated_Type in that if the access type refers to an
944--       incomplete type, and the full type is available, then this full type
945--       is returned instead of the incomplete type.
946
947--    DIC_Procedure (synthesized)
948--       Defined in all type entities. Set for a private type and its full view
949--       when the type is subject to pragma Default_Initial_Condition (DIC), or
950--       when the type inherits a DIC pragma from a parent type. Points to the
951--       entity of a procedure which takes a single argument of the given type
952--       and verifies the assertion expression of the DIC pragma at run time.
953
954--       Note: the reason this is marked as a synthesized attribute is that the
955--       way this is stored is as an element of the Subprograms_For_Type field.
956
957--    Digits_Value (Uint17)
958--       Defined in floating point types and subtypes and decimal types and
959--       subtypes. Contains the Digits value specified in the declaration.
960
961--    Direct_Primitive_Operations (Elist10)
962--       Defined in tagged types and subtypes (including synchronized types),
963--       in tagged private types and in tagged incomplete types. Element list
964--       of entities for primitive operations of the tagged type. Not defined
965--       in untagged types. In order to follow the C++ ABI, entities of
966--       primitives that come from source must be stored in this list in the
967--       order of their occurrence in the sources. For incomplete types the
968--       list is always empty.
969--       When expansion is disabled the corresponding record type of a
970--       synchronized type is not constructed. In that case, such types
971--       carry this attribute directly, for ASIS use.
972
973--    Directly_Designated_Type (Node20)
974--       Defined in access types. This field points to the type that is
975--       directly designated by the access type. In the case of an access
976--       type to an incomplete type, this field references the incomplete
977--       type. Directly_Designated_Type is typically used in implementing the
978--       static semantics of the language; in implementing dynamic semantics,
979--       we typically want the full view of the designated type. The function
980--       Designated_Type obtains this full type in the case of access to an
981--       incomplete type.
982
983--    Disable_Controlled (Flag253)
984--      Present in all entities. Set for a controlled type subject to aspect
985--      Disable_Controlled which evaluates to True. This flag is taken into
986--      account in synthesized attribute Is_Controlled.
987
988--    Discard_Names (Flag88)
989--       Defined in types and exception entities. Set if pragma Discard_Names
990--       applies to the entity. It is also set for declarative regions and
991--       package specs for which a Discard_Names pragma with zero arguments
992--       has been encountered. The purpose of setting this flag is to be able
993--       to set the Discard_Names attribute on enumeration types declared
994--       after the pragma within the same declarative region. This flag is
995--       set to False if a Keep_Names pragma appears for an enumeration type.
996
997--    Discriminal (Node17)
998--       Defined in discriminants (Discriminant formal: GNAT's first
999--       coinage). The entity used as a formal parameter that corresponds
1000--       to a discriminant. See section "Handling of Discriminants" for
1001--       full details of the use of discriminals.
1002
1003--    Discriminal_Link (Node10)
1004--       Defined in E_In_Parameter or E_Constant entities. For discriminals,
1005--       points back to corresponding discriminant. For other entities, must
1006--       remain Empty.
1007
1008--    Discriminant_Checking_Func (Node20)
1009--       Defined in components. Points to the defining identifier of the
1010--       function built by the expander returns a Boolean indicating whether
1011--       the given record component exists for the current discriminant
1012--       values.
1013
1014--    Discriminant_Constraint (Elist21)
1015--       Defined in entities whose Has_Discriminants flag is set (concurrent
1016--       types, subtypes, record types and subtypes, private types and
1017--       subtypes, limited private types and subtypes and incomplete types).
1018--       It is an error to reference the Discriminant_Constraint field if
1019--       Has_Discriminants is False.
1020--
1021--       If the Is_Constrained flag is set, Discriminant_Constraint points
1022--       to an element list containing the discriminant constraints in the
1023--       same order in which the discriminants are declared.
1024--
1025--       If the Is_Constrained flag is not set but the discriminants of the
1026--       unconstrained type have default initial values then this field
1027--       points to an element list giving these default initial values in
1028--       the same order in which the discriminants are declared. Note that
1029--       in this case the entity cannot be a tagged record type, because
1030--       discriminants in this case cannot have defaults.
1031--
1032--       If the entity is a tagged record implicit type, then this field is
1033--       inherited from the first subtype (so that the itype is subtype
1034--       conformant with its first subtype, which is needed when the first
1035--       subtype overrides primitive operations inherited by the implicit
1036--       base type).
1037--
1038--       In all other cases Discriminant_Constraint contains the empty
1039--       Elist (ie it is initialized with a call to New_Elmt_List).
1040
1041--    Discriminant_Default_Value (Node20)
1042--       Defined in discriminants. Points to the node representing the
1043--       expression for the default value of the discriminant. Set to
1044--       Empty if the discriminant has no default value.
1045
1046--    Discriminant_Number (Uint15)
1047--       Defined in discriminants. Gives the ranking of a discriminant in
1048--       the list of discriminants of the type, i.e. a sequential integer
1049--       index starting at 1 and ranging up to number of discriminants.
1050
1051--    Dispatch_Table_Wrappers (Elist26) [implementation base type only]
1052--       Defined in E_Record_Type and E_Record_Subtype entities. Set in library
1053--       level tagged type entities if we are generating statically allocated
1054--       dispatch tables. Points to the list of dispatch table wrappers
1055--       associated with the tagged type. For an untagged record, contains
1056--       No_Elist.
1057
1058--    DTC_Entity (Node16)
1059--       Defined in function and procedure entities. Set to Empty unless
1060--       the subprogram is dispatching in which case it references the
1061--       Dispatch Table pointer Component. For regular Ada tagged this, this
1062--       is the _Tag component. For CPP_Class types and their descendants,
1063--       this points to the component entity in the record that holds the
1064--       Vtable pointer for the Vtable containing the entry referencing the
1065--       subprogram.
1066
1067--    DT_Entry_Count (Uint15)
1068--       Defined in E_Component entities. Only used for component marked
1069--       Is_Tag. Store the number of entries in the Vtable (or Dispatch Table)
1070
1071--    DT_Offset_To_Top_Func (Node25)
1072--       Defined in E_Component entities. Only used for component marked
1073--       Is_Tag. If present it stores the Offset_To_Top function used to
1074--       provide this value in tagged types whose ancestor has discriminants.
1075
1076--    DT_Position (Uint15)
1077--       Defined in function and procedure entities which are dispatching
1078--       (should not be referenced without first checking that flag
1079--       Is_Dispatching_Operation is True). Contains the offset into
1080--       the Vtable for the entry that references the subprogram.
1081
1082--    Ekind (Ekind)
1083--       Defined in all entities. Contains a value of the enumeration type
1084--       Entity_Kind declared in a subsequent section in this spec.
1085
1086--    Elaborate_Body_Desirable (Flag210)
1087--       Defined in package entities. Set if the elaboration circuitry detects
1088--       a case where there is a package body that modifies one or more visible
1089--       entities in the package spec and there is no explicit Elaborate_Body
1090--       pragma for the package. This information is passed on to the binder,
1091--       which attempts, but does not promise, to elaborate the body as close
1092--       to the spec as possible.
1093
1094--    Elaboration_Entity (Node13)
1095--       Defined in generic and non-generic package and subprogram entities.
1096--       This is a counter associated with the unit that is initially set to
1097--       zero, is incremented when an elaboration request for the unit is
1098--       made, and is decremented when a finalization request for the unit
1099--       is made. This is used for three purposes. First, it is used to
1100--       implement access before elaboration checks (the counter must be
1101--       non-zero to call a subprogram at elaboration time). Second, it is
1102--       used to guard against repeated execution of the elaboration code.
1103--       Third, it is used to ensure that the finalization code is executed
1104--       only after all clients have requested it.
1105--
1106--       Note that we always allocate this counter, and set this field, but
1107--       we do not always actually use it. It is only used if it is needed
1108--       for access before elaboration use (see Elaboration_Entity_Required
1109--       flag) or if either the spec or the body has elaboration code. If
1110--       neither of these two conditions holds, then the entity is still
1111--       allocated (since we don't know early enough whether or not there
1112--       is elaboration code), but is simply not used for any purpose.
1113
1114--    Elaboration_Entity_Required (Flag174)
1115--       Defined in generic and non-generic package and subprogram entities.
1116--       Set only if Elaboration_Entity is non-Empty to indicate that the
1117--       counter is required to be non-zero even if there is no other
1118--       elaboration code. This occurs when the Elaboration_Entity counter
1119--       is used for access before elaboration checks. If the counter is
1120--       only used to prevent multiple execution of the elaboration code,
1121--       then if there is no other elaboration code, obviously there is no
1122--       need to set the flag.
1123
1124--    Encapsulating_State (Node32)
1125--       Defined in abstract state, constant and variable entities. Contains
1126--       the entity of an ancestor state or a single concurrent type whose
1127--       refinement utilizes this item as a constituent.
1128
1129--    Enclosing_Scope (Node18)
1130--       Defined in labels. Denotes the innermost enclosing construct that
1131--       contains the label. Identical to the scope of the label, except for
1132--       labels declared in the body of an accept statement, in which case the
1133--       entry_name is the Enclosing_Scope. Used to validate goto's within
1134--       accept statements.
1135
1136--    Entry_Accepted (Flag152)
1137--       Defined in E_Entry and E_Entry_Family entities. Set if there is
1138--       at least one accept for this entry in the task body. Used to
1139--       generate warnings for missing accepts.
1140
1141--    Entry_Bodies_Array (Node19)
1142--       Defined in protected types for which Has_Entries is true.
1143--       This is the defining identifier for the array of entry body
1144--       action procedures and barrier functions used by the runtime to
1145--       execute the user code associated with each entry.
1146
1147--    Entry_Cancel_Parameter (Node23)
1148--       Defined in blocks. This only applies to a block statement for
1149--       which the Is_Asynchronous_Call_Block flag is set. It
1150--       contains the defining identifier of an object that must be
1151--       passed to the Cancel_Task_Entry_Call or Cancel_Protected_Entry_Call
1152--       call in the cleanup handler added to the block by
1153--       Exp_Ch7.Expand_Cleanup_Actions. This parameter is a Boolean
1154--       object for task entry calls and a Communications_Block object
1155--       in the case of protected entry calls. In both cases the objects
1156--       are declared in outer scopes to this block.
1157
1158--    Entry_Component (Node11)
1159--       Defined in formal parameters (in, in out and out parameters). Used
1160--       only for formals of entries. References the corresponding component
1161--       of the entry parameter record for the entry.
1162
1163--    Entry_Formal (Node16)
1164--       Defined in components of the record built to correspond to entry
1165--       parameters. This field points from the component to the formal. It
1166--       is the back pointer corresponding to Entry_Component.
1167
1168--    Entry_Index_Constant (Node18)
1169--       Defined in an entry index parameter. This is an identifier that
1170--       eventually becomes the name of a constant representing the index
1171--       of the entry family member whose entry body is being executed. Used
1172--       to expand references to the entry index specification identifier.
1173
1174--    Entry_Index_Type (synthesized)
1175--       Applies to an entry family. Denotes Etype of the subtype indication
1176--       in the entry declaration. Used to resolve the index expression in an
1177--       accept statement for a member of the family, and in the prefix of
1178--       'COUNT when it applies to a family member.
1179
1180--    Entry_Max_Queue_Lengths_Array (Node35)
1181--       Defined in protected types for which Has_Entries is true. Contains the
1182--       defining identifier for the array of naturals used by the runtime to
1183--       limit the queue size of each entry individually.
1184
1185--    Entry_Parameters_Type (Node15)
1186--       Defined in entries. Points to the access-to-record type that is
1187--       constructed by the expander to hold a reference to the parameter
1188--       values. This reference is manipulated (as an address) by the
1189--       tasking runtime. The designated record represents a packaging
1190--       up of the entry parameters (see Exp_Ch9.Expand_N_Entry_Declaration
1191--       for further details). Entry_Parameters_Type is Empty if the entry
1192--       has no parameters.
1193
1194--    Enumeration_Pos (Uint11)
1195--       Defined in enumeration literals. Contains the position number
1196--       corresponding to the value of the enumeration literal.
1197
1198--    Enumeration_Rep (Uint12)
1199--       Defined in enumeration literals. Contains the representation that
1200--       corresponds to the value of the enumeration literal. Note that
1201--       this is normally the same as Enumeration_Pos except in the presence
1202--       of representation clauses, where Pos will still represent the
1203--       position of the literal within the type and Rep will have be the
1204--       value given in the representation clause.
1205
1206--    Enumeration_Rep_Expr (Node22)
1207--       Defined in enumeration literals. Points to the expression in an
1208--       associated enumeration rep clause that provides the representation
1209--       value for this literal. Empty if no enumeration rep clause for this
1210--       literal (or if rep clause does not have an entry for this literal,
1211--       an error situation). This is also used to catch duplicate entries
1212--       for the same literal.
1213
1214--    Enum_Pos_To_Rep (Node23)
1215--       Defined in enumeration types (but not enumeration subtypes). Set to
1216--       Empty unless the enumeration type has a non-standard representation
1217--       (i.e. at least one literal has a representation value different from
1218--       its pos value). In this case, Enum_Pos_To_Rep is the entity for an
1219--       array constructed when the type is frozen that maps Pos values to
1220--       corresponding Rep values. The index type of this array is Natural,
1221--       and the component type is a suitable integer type that holds the
1222--       full range of representation values.
1223
1224--    Equivalent_Type (Node18)
1225--       Defined in class wide types and subtypes, access to protected
1226--       subprogram types, and in exception types. For a classwide type, it
1227--       is always Empty. For a class wide subtype, it points to an entity
1228--       created by the expander which gives the backend an understandable
1229--       equivalent of the class subtype with a known size (given by an
1230--       initial value). See Exp_Util.Expand_Class_Wide_Subtype for further
1231--       details. For E_Exception_Type, this points to the record containing
1232--       the data necessary to represent exceptions (for further details, see
1233--       System.Standard_Library. For access_to_protected subprograms, it
1234--       denotes a record that holds pointers to the operation and to the
1235--       protected object. For remote Access_To_Subprogram types, it denotes
1236--       the record that is the fat pointer representation of an RAST.
1237
1238--    Esize (Uint12)
1239--       Defined in all types and subtypes, and also for components, constants,
1240--       and variables, including exceptions where it refers to the static data
1241--       allocated for an exception. Contains the Object_Size of the type or of
1242--       the object. A value of zero indicates that the value is not yet known.
1243--
1244--       For the case of components where a component clause is present, the
1245--       value is the value from the component clause, which must be non-
1246--       negative (but may be zero, which is acceptable for the case of
1247--       a type with only one possible value). It is also possible for Esize
1248--       of a component to be set without a component clause defined, which
1249--       means that the component size is specified, but not the position.
1250--       See also RM_Size and the section on "Handling of Type'Size Values".
1251--       During backend processing, the value is back annotated for all zero
1252--       values, so that after the call to the backend, the value is set.
1253
1254--    Etype (Node5)
1255--       Defined in all entities. Represents the type of the entity, which
1256--       is itself another entity. For a type entity, points to the parent
1257--       type for a derived type, or if the type is not derived, points to
1258--       itself. For a subtype entity, Etype points to the base type. For
1259--       a class wide type, points to the corresponding specific type. For a
1260--       subprogram or subprogram type, Etype has the return type of a function
1261--       or is set to Standard_Void_Type to represent a procedure. The Etype
1262--       field of a package is also set to Standard_Void_Type.
1263--
1264--       Note one obscure case: for pragma Default_Storage_Pool (null), the
1265--       Etype of the N_Null node is Empty.
1266
1267--    Extra_Accessibility (Node13)
1268--       Defined in formal parameters in the non-generic case. Normally Empty,
1269--       but if expansion is active, and a parameter is one for which a
1270--       dynamic accessibility check is required, then an extra formal of type
1271--       Natural is created (see description of field Extra_Formal), and the
1272--       Extra_Accessibility field of the formal parameter points to the entity
1273--       for this extra formal. Also defined in variables when compiling
1274--       receiving stubs. In this case, a non Empty value means that this
1275--       variable's accessibility depth has been transmitted by the caller and
1276--       must be retrieved through the entity designed by this field instead of
1277--       being computed.
1278
1279--    Extra_Accessibility_Of_Result (Node19)
1280--       Defined in (non-generic) Function, Operator, and Subprogram_Type
1281--       entities. Normally Empty, but if expansion is active, and a function
1282--       is one for which "the accessibility level of the result ... determined
1283--       by the point of call" (AI05-0234) is needed, then an extra formal of
1284--       subtype Natural is created (see description of field Extra_Formal),
1285--       and the Extra_Accessibility_Of_Result field of the function points to
1286--       the entity for this extra formal.
1287
1288--    Extra_Constrained (Node23)
1289--       Defined in formal parameters in the non-generic case. Normally Empty,
1290--       but if expansion is active and a parameter is one for which a dynamic
1291--       indication of its constrained status is required, then an extra formal
1292--       of type Boolean is created (see description of field Extra_Formal),
1293--       and the Extra_Constrained field of the formal parameter points to the
1294--       entity for this extra formal. Also defined in variables when compiling
1295--       receiving stubs. In this case, a non empty value means that this
1296--       variable's constrained status has been transmitted by the caller and
1297--       must be retrieved through the entity designed by this field instead of
1298--       being computed.
1299
1300--    Extra_Formal (Node15)
1301--       Defined in formal parameters in the non-generic case. Certain
1302--       parameters require extra implicit information to be passed (e.g. the
1303--       flag indicating if an unconstrained variant record argument is
1304--       constrained, and the accessibility level for access parameters). See
1305--       description of Extra_Constrained, Extra_Accessibility fields for
1306--       further details. Extra formal parameters are constructed to represent
1307--       these values, and chained to the end of the list of formals using the
1308--       Extra_Formal field (i.e. the Extra_Formal field of the last "real"
1309--       formal points to the first extra formal, and the Extra_Formal field of
1310--       each extra formal points to the next one, with Empty indicating the
1311--       end of the list of extra formals). Another case of Extra_Formal arises
1312--       in connection with unnesting of subprograms, where the ARECnF formal
1313--       that represents an activation record pointer is an extra formal.
1314
1315--    Extra_Formals (Node28)
1316--       Applies to subprograms, subprogram types, entries, and entry
1317--       families. Returns first extra formal of the subprogram or entry.
1318--       Returns Empty if there are no extra formals.
1319
1320--    Finalization_Master (Node23) [root type only]
1321--       Defined in access-to-controlled or access-to-class-wide types. The
1322--       field contains the entity of the finalization master which handles
1323--       dynamically allocated controlled objects referenced by the access
1324--       type. Empty for access-to-subprogram types. Empty for access types
1325--       whose designated type does not need finalization actions.
1326
1327--    Finalize_Storage_Only (Flag158) [base type only]
1328--       Defined in all types. Set on direct controlled types to which a
1329--       valid Finalize_Storage_Only pragma applies. This flag is also set on
1330--       composite types when they have at least one controlled component and
1331--       all their controlled components are Finalize_Storage_Only. It is also
1332--       inherited by type derivation except for direct controlled types where
1333--       the Finalize_Storage_Only pragma is required at each level of
1334--       derivation.
1335
1336--    Finalizer (Node28)
1337--       Applies to package declarations and bodies. Contains the entity of the
1338--       library-level program which finalizes all package-level controlled
1339--       objects.
1340
1341--    First_Component (synthesized)
1342--       Applies to incomplete, private, protected, record and task types.
1343--       Returns the first component by following the chain of declared
1344--       entities for the type a component is found (one with an Ekind of
1345--       E_Component). The discriminants are skipped. If the record is null,
1346--       then Empty is returned.
1347
1348--    First_Component_Or_Discriminant (synthesized)
1349--       Similar to First_Component, but discriminants are not skipped, so will
1350--       find the first discriminant if discriminants are present.
1351
1352--    First_Entity (Node17)
1353--       Defined in all entities which act as scopes to which a list of
1354--       associated entities is attached (blocks, class subtypes and types,
1355--       entries, functions, loops, packages, procedures, protected objects,
1356--       record types and subtypes, private types, task types and subtypes).
1357--       Points to a list of associated entities using the Next_Entity field
1358--       as a chain pointer with Empty marking the end of the list.
1359
1360--    First_Exit_Statement (Node8)
1361--       Defined in E_Loop entity. The exit statements for a loop are chained
1362--       (in reverse order of appearance) using this field to point to the
1363--       first entry in the chain (last exit statement in the loop). The
1364--       entries are chained through the Next_Exit_Statement field of the
1365--       N_Exit_Statement node with Empty marking the end of the list.
1366
1367--    First_Formal (synthesized)
1368--       Applies to subprograms and subprogram types, and also to entries
1369--       and entry families. Returns first formal of the subprogram or entry.
1370--       The formals are the first entities declared in a subprogram or in
1371--       a subprogram type (the designated type of an Access_To_Subprogram
1372--       definition) or in an entry.
1373
1374--    First_Formal_With_Extras (synthesized)
1375--       Applies to subprograms and subprogram types, and also in entries
1376--       and entry families. Returns first formal of the subprogram or entry.
1377--       Returns Empty if there are no formals. The list returned includes
1378--       all the extra formals (see description of Extra_Formals field).
1379
1380--    First_Index (Node17)
1381--       Defined in array types and subtypes. By introducing implicit subtypes
1382--       for the index constraints, we have the same structure for constrained
1383--       and unconstrained arrays, subtype marks and discrete ranges are
1384--       both represented by a subtype. This function returns the tree node
1385--       corresponding to an occurrence of the first index (NOT the entity for
1386--       the type). Subsequent indices are obtained using Next_Index. Note that
1387--       this field is defined for the case of string literal subtypes, but is
1388--       always Empty.
1389
1390--    First_Literal (Node17)
1391--       Defined in all enumeration types, including character and boolean
1392--       types. This field points to the first enumeration literal entity
1393--       for the type (i.e. it is set to First (Literals (N)) where N is
1394--       the enumeration type definition node. A special case occurs with
1395--       standard character and wide character types, where this field is
1396--       Empty, since there are no enumeration literal lists in these cases.
1397--       Note that this field is set in enumeration subtypes, but it still
1398--       points to the first literal of the base type in this case.
1399
1400--    First_Private_Entity (Node16)
1401--       Defined in all entities containing private parts (packages, protected
1402--       types and subtypes, task types and subtypes). The entities on the
1403--       entity chain are in order of declaration, so the entries for private
1404--       entities are at the end of the chain. This field points to the first
1405--       entity for the private part. It is Empty if there are no entities
1406--       declared in the private part or if there is no private part.
1407
1408--    First_Rep_Item (Node6)
1409--       Defined in all entities. If non-empty, points to a linked list of
1410--       representation pragmas nodes and representation clause nodes that
1411--       apply to the entity, linked using Next_Rep_Item, with Empty marking
1412--       the end of the list. In the case of derived types and subtypes, the
1413--       new entity inherits the chain at the point of declaration. This means
1414--       that it is possible to have multiple instances of the same kind of rep
1415--       item on the chain, in which case it is the first one that applies to
1416--       the entity.
1417--
1418--       Note: pragmas that can apply to more than one overloadable entity,
1419--       (Convention, Interface, Inline, Inline_Always, Import, Export,
1420--       External) are never present on this chain when they apply to
1421--       overloadable entities, since it is impossible for a given pragma
1422--       to be on more than one chain at a time.
1423--
1424--       For most representation items, the representation information is
1425--       reflected in other fields and flags in the entity. For example if a
1426--       record representation clause is present, the component entities
1427--       reflect the specified information. However, there are some items that
1428--       are only reflected in the chain. These include:
1429--
1430--          Machine_Attribute pragma
1431--          Link_Alias pragma
1432--          Linker_Constructor pragma
1433--          Linker_Destructor pragma
1434--          Weak_External pragma
1435--          Thread_Local_Storage pragma
1436--
1437--       If any of these items are present, then the flag Has_Gigi_Rep_Item is
1438--       set, indicating that the backend should search the chain.
1439--
1440--       Other representation items are included in the chain so that error
1441--       messages can easily locate the relevant nodes for posting errors.
1442--       Note in particular that size clauses are defined only for this
1443--       purpose, and should only be accessed if Has_Size_Clause is set.
1444
1445--    Float_Rep (Uint10)
1446--       Defined in floating-point entities. Contains a value of type
1447--       Float_Rep_Kind. Together with the Digits_Value uniquely defines
1448--       the floating-point representation to be used.
1449
1450--    Freeze_Node (Node7)
1451--       Defined in all entities. If there is an associated freeze node for the
1452--       entity, this field references this freeze node. If no freeze node is
1453--       associated with the entity, then this field is Empty. See package
1454--       Freeze for further details.
1455
1456--    From_Limited_With (Flag159)
1457--       Defined in abtract states, package and type entities. Set to True when
1458--       the related entity is generated by the expansion of a limited with
1459--       clause. Such an entity is said to be a "shadow" - it acts as the
1460--       abstract view of a state or variable or as the incomplete view of a
1461--       type by inheriting relevant attributes from the said entity.
1462
1463--    Full_View (Node11)
1464--       Defined in all type and subtype entities and in deferred constants.
1465--       References the entity for the corresponding full type or constant
1466--       declaration. For all types other than private and incomplete types,
1467--       this field always contains Empty. If an incomplete type E1 is
1468--       completed by a private type E2 whose full type declaration entity is
1469--       E3 then the full view of E1 is E2, and the full view of E2 is E3. See
1470--       also Underlying_Type.
1471
1472--    Generic_Homonym (Node11)
1473--       Defined in generic packages. The generic homonym is the entity of
1474--       a renaming declaration inserted in every generic unit. It is used
1475--       to resolve the name of a local entity that is given by a qualified
1476--       name, when the generic entity itself is hidden by a local name.
1477
1478--    Generic_Renamings (Elist23)
1479--       Defined in package and subprogram instances. Holds mapping that
1480--       associates generic parameters with the corresponding instances, in
1481--       those cases where the instance is an entity.
1482
1483--    Handler_Records (List10)
1484--       Defined in subprogram and package entities. Points to a list of
1485--       identifiers referencing the handler record entities for the
1486--       corresponding unit.
1487
1488--    Has_Aliased_Components (Flag135) [implementation base type only]
1489--       Defined in array type entities. Indicates that the component type
1490--       of the array is aliased. Should this also be set for records to
1491--       indicate that at least one component is aliased (see processing in
1492--       Sem_Prag.Process_Atomic_Independent_Shared_Volatile???)
1493
1494--    Has_Alignment_Clause (Flag46)
1495--       Defined in all type entities and objects. Indicates if an alignment
1496--       clause has been given for the entity. If set, then Alignment_Clause
1497--       returns the N_Attribute_Definition node for the alignment attribute
1498--       definition clause. Note that it is possible for this flag to be False
1499--       even when Alignment_Clause returns non_Empty (this happens in the case
1500--       of derived type declarations).
1501
1502--    Has_All_Calls_Remote (Flag79)
1503--       Defined in all library unit entities. Set if the library unit has an
1504--       All_Calls_Remote pragma. Note that such entities must also be RCI
1505--       entities, so the flag Is_Remote_Call_Interface will always be set if
1506--       this flag is set.
1507
1508--    Has_Atomic_Components (Flag86) [implementation base type only]
1509--       Defined in all types and objects. Set only for an array type or
1510--       an array object if a valid pragma Atomic_Components applies to the
1511--       type or object. Note that in the case of an object, this flag is
1512--       only set on the object if there was an explicit pragma for the
1513--       object. In other words, the proper test for whether an object has
1514--       atomic components is to see if either the object or its base type
1515--       has this flag set. Note that in the case of a type, the pragma will
1516--       be chained to the rep item chain of the first subtype in the usual
1517--       manner.
1518
1519--    Has_Attach_Handler (synthesized)
1520--       Applies to record types that are constructed by the expander to
1521--       represent protected types. Returns True if there is at least one
1522--       Attach_Handler pragma in the corresponding specification.
1523
1524--    Has_Biased_Representation (Flag139)
1525--       Defined in discrete types (where it applies to the type'size value),
1526--       and to objects (both stand-alone and components), where it applies to
1527--       the size of the object from a size or record component clause. In
1528--       all cases it indicates that the size in question is smaller than
1529--       would normally be required, but that the size requirement can be
1530--       satisfied by using a biased representation, in which stored values
1531--       have the low bound (Expr_Value (Type_Low_Bound (T)) subtracted to
1532--       reduce the required size. For example, a type with a range of 1..2
1533--       takes one bit, using 0 to represent 1 and 1 to represent 2.
1534--
1535--       Note that in the object and component cases, the flag is only set if
1536--       the type is unbiased, but the object specifies a smaller size than the
1537--       size of the type, forcing biased representation for the object, but
1538--       the subtype is still an unbiased type.
1539
1540--    Has_Completion (Flag26)
1541--       Defined in all entities that require a completion (functions,
1542--       procedures, private types, limited private types, incomplete types,
1543--       constants and packages that require a body). The flag is set if the
1544--       completion has been encountered and analyzed.
1545
1546--    Has_Completion_In_Body (Flag71)
1547--       Defined in all entities for types and subtypes. Set only in "Taft
1548--       amendment types" (incomplete types whose full declaration appears in
1549--       the package body).
1550
1551--    Has_Complex_Representation (Flag140) [implementation base type only]
1552--       Defined in record types. Set only for a base type to which a valid
1553--       pragma Complex_Representation applies.
1554
1555--    Has_Component_Size_Clause (Flag68) [implementation base type only]
1556--       Defined in all type entities. Set if a component size clause is
1557--       Defined for the given type. Note that this flag can be False even
1558--       if Component_Size is non-zero (happens in the case of derived types).
1559
1560--    Has_Constrained_Partial_View (Flag187)
1561--       Defined in private type and their completions, when the private
1562--       type has no discriminants and the full view has discriminants with
1563--       defaults. In Ada 2005 heap-allocated objects of such types are not
1564--       constrained, and can change their discriminants with full assignment.
1565--
1566--       Ada 2012 has an additional rule (3.3. (23/10.3)) concerning objects
1567--       declared in a generic package body. Objects whose type is an untagged
1568--       generic formal private type are considered to have a constrained
1569--       partial view. The predicate Object_Type_Has_Constrained_Partial_View
1570--       in sem_aux is used to test for this case.
1571
1572--    Has_Contiguous_Rep (Flag181)
1573--       Defined in enumeration types. Set if the type as a representation
1574--       clause whose entries are successive integers.
1575
1576--    Has_Controlled_Component (Flag43) [base type only]
1577--       Defined in all type and subtype entities. Set only for composite type
1578--       entities which contain a component that either is a controlled type,
1579--       or itself contains controlled component (i.e. either Is_Controlled or
1580--       Has_Controlled_Component is set for at least one component).
1581
1582--    Has_Controlling_Result (Flag98)
1583--       Defined in E_Function entities. Set if the function is a primitive
1584--       function of a tagged type which can dispatch on result.
1585
1586--    Has_Convention_Pragma (Flag119)
1587--       Defined in all entities. Set for an entity for which a valid pragma
1588--       Convention, Import, or Export has been given. Used to prevent more
1589--       than one such pragma appearing for a given entity (RM B.1(45)).
1590
1591--    Has_Default_Aspect (Flag39) [base type only]
1592--       Defined in entities for types and subtypes, set for scalar types with
1593--       a Default_Value aspect and array types with a Default_Component_Value
1594--       aspect. If this flag is set, then a corresponding aspect specification
1595--       node will be present on the rep item chain for the entity. For a
1596--       derived type that inherits a default from its ancestor, the default
1597--       value is set, but it may be overridden by an aspect declaration on
1598--       type derivation.
1599
1600--    Has_Delayed_Aspects (Flag200)
1601--      Defined in all entities. Set if the Rep_Item chain for the entity has
1602--      one or more N_Aspect_Definition nodes chained which are not to be
1603--      evaluated till the freeze point. The aspect definition expression
1604--      clause has been preanalyzed to get visibility at the point of use,
1605--      but no other action has been taken.
1606
1607--    Has_Delayed_Freeze (Flag18)
1608--       Defined in all entities. Set to indicate that an explicit freeze
1609--       node must be generated for the entity at its freezing point. See
1610--       separate section ("Delayed Freezing and Elaboration") for details.
1611
1612--    Has_Delayed_Rep_Aspects (Flag261)
1613--       Defined in all types and subtypes. This flag is set if there is at
1614--       least one aspect for a representation characteristic that has to be
1615--       delayed and is one of the characteristics that may be inherited by
1616--       types derived from this type if not overridden. If this flag is set,
1617--       then types derived from this type have May_Inherit_Delayed_Rep_Aspects
1618--       set, signalling that Freeze.Inherit_Delayed_Rep_Aspects must be called
1619--       at the freeze point of the derived type.
1620
1621--    Has_DIC (syntherized)
1622--       Defined in all type entities. Set for a private type and its full view
1623--       when the type is subject to pragma Default_Initial_Condition (DIC), or
1624--       when the type inherits a DIC pragma from a parent type.
1625
1626--    Has_Discriminants (Flag5)
1627--       Defined in all types and subtypes. For types that are allowed to have
1628--       discriminants (record types and subtypes, task types and subtypes,
1629--       protected types and subtypes, private types, limited private types,
1630--       and incomplete types), indicates if the corresponding type or subtype
1631--       has a known discriminant part. Always false for all other types.
1632
1633--    Has_Dispatch_Table (Flag220)
1634--       Defined in E_Record_Types that are tagged. Set to indicate that the
1635--       corresponding dispatch table is already built. This flag is used to
1636--       avoid duplicate construction of library level dispatch tables (because
1637--       the declaration of library level objects cause premature construction
1638--       of the table); otherwise the code that builds the table is added at
1639--       the end of the list of declarations of the package.
1640
1641--    Has_Dynamic_Predicate_Aspect (Flag258)
1642--       Defined in all types and subtypes. Set if a Dynamic_Predicate aspect
1643--       was explicitly applied to the type. Generally we treat predicates as
1644--       static if possible, regardless of whether they are specified using
1645--       Predicate, Static_Predicate, or Dynamic_Predicate. And if a predicate
1646--       can be treated as static (i.e. its expression is predicate-static),
1647--       then the flag Has_Static_Predicate will be set True. But there are
1648--       cases where legality is affected by the presence of an explicit
1649--       Dynamic_Predicate aspect. For example, even if a predicate looks
1650--       static, you can't use it in a case statement if there is an explicit
1651--       Dynamic_Predicate aspect specified. So test Has_Static_Predicate if
1652--       you just want to know if the predicate can be evaluated statically,
1653--       but test Has_Dynamic_Predicate_Aspect to enforce legality rules about
1654--       the use of dynamic predicates.
1655
1656--    Has_Entries (synthesized)
1657--       Applies to concurrent types. True if any entries are declared
1658--       within the task or protected definition for the type.
1659
1660--    Has_Enumeration_Rep_Clause (Flag66)
1661--       Defined in enumeration types. Set if an enumeration representation
1662--       clause has been given for this enumeration type. Used to prevent more
1663--       than one enumeration representation clause for a given type. Note
1664--       that this does not imply a representation with holes, since the rep
1665--       clause may merely confirm the default 0..N representation.
1666
1667--    Has_Exit (Flag47)
1668--       Defined in loop entities. Set if the loop contains an exit statement.
1669
1670--    Has_Expanded_Contract (Flag240)
1671--       Defined in functions, procedures, entries, and entry families. Set
1672--       when a subprogram has a N_Contract node that has been expanded. The
1673--       flag prevents double expansion of a contract when a construct is
1674--       rewritten into something else and subsequently reanalyzed/expanded.
1675
1676--    Has_Foreign_Convention (synthesized)
1677--       Applies to all entities. Determines if the Convention for the
1678--       entity is a foreign convention (i.e. is other than Convention_Ada,
1679--       Convention_Intrinsic, Convention_Entry or Convention_Protected).
1680
1681--    Has_Forward_Instantiation (Flag175)
1682--       Defined in package entities. Set for packages that instantiate local
1683--       generic entities before the corresponding generic body has been seen.
1684--       If a package has a forward instantiation, we cannot inline subprograms
1685--       appearing in the same package because the placement requirements of
1686--       the instance will conflict with the linear elaboration of front-end
1687--       inlining.
1688
1689--    Has_Fully_Qualified_Name (Flag173)
1690--       Defined in all entities. Set if the name in the Chars field has been
1691--       replaced by the fully qualified name, as used for debug output. See
1692--       Exp_Dbug for a full description of the use of this flag and also the
1693--       related flag Has_Qualified_Name.
1694
1695--    Has_Gigi_Rep_Item (Flag82)
1696--       Defined in all entities. Set if the rep item chain (referenced by
1697--       First_Rep_Item and linked through the Next_Rep_Item chain) contains a
1698--       representation item that needs to be specially processed by the back
1699--       end, i.e. one of the following items:
1700--
1701--          Machine_Attribute pragma
1702--          Linker_Alias pragma
1703--          Linker_Constructor pragma
1704--          Linker_Destructor pragma
1705--          Weak_External pragma
1706--          Thread_Local_Storage pragma
1707--
1708--       If this flag is set, then the backend should scan the rep item chain
1709--       to process any of these items that appear. At least one such item will
1710--       be present.
1711--
1712--    Has_Homonym (Flag56)
1713--       Defined in all entities. Set if an entity has a homonym in the same
1714--       scope. Used by the backend to generate unique names for all entities.
1715
1716--    Has_Implicit_Dereference (Flag251)
1717--       Defined in types and discriminants. Set if the type has an aspect
1718--       Implicit_Dereference. Set also on the discriminant named in the aspect
1719--       clause, to simplify type resolution.
1720
1721--    Has_Independent_Components (Flag34) [implementation base type only]
1722--       Defined in all types and objects. Set only for a record type or an
1723--       array type or array object if a valid pragma Independent_Components
1724--       applies to the type or object. Note that in the case of an object,
1725--       this flag is only set on the object if there was an explicit pragma
1726--       for the object. In other words, the proper test for whether an object
1727--       has independent components is to see if either the object or its base
1728--       type has this flag set. Note that in the case of a type, the pragma
1729--       will be chained to the rep item chain of the first subtype in the
1730--       usual manner.
1731
1732--    Has_Inheritable_Invariants (Flag248) [base type only]
1733--       Defined in all type entities. Set on private types and interface types
1734--       which define at least one class-wide invariant. Such invariants must
1735--       be inherited by derived types. The flag is also set on the full view
1736--       of a private type for completeness.
1737
1738--    Has_Inherited_DIC (Flag133) [base type only]
1739--       Defined in all type entities. Set for a derived type which inherits
1740--       pragma Default_Initial_Condition from a parent type.
1741
1742--    Has_Inherited_Invariants (Flag291) [base type only]
1743--       Defined in all type entities. Set on private extensions and derived
1744--       types which inherit at least on class-wide invariant from a parent or
1745--       an interface type. The flag is also set on the full view of a private
1746--       extension for completeness.
1747
1748--    Has_Initial_Value (Flag219)
1749--       Defined in entities for variables and out parameters. Set if there
1750--       is an explicit initial value expression in the declaration of the
1751--       variable. Note that this is set only if this initial value is
1752--       explicit, it is not set for the case of implicit initialization
1753--       of access types or controlled types. Always set to False for out
1754--       parameters. Also defined in entities for in and in-out parameters,
1755--       but always false in these cases.
1756
1757--    Has_Interrupt_Handler (synthesized)
1758--       Applies to all protected type entities. Set if the protected type
1759--       definition contains at least one procedure to which a pragma
1760--       Interrupt_Handler applies.
1761
1762--    Has_Invariants (synthesized)
1763--       Defined in all type entities. True if the type defines at least one
1764--       invariant of its own or inherits at least one class-wide invariant
1765--       from a parent type or an interface.
1766
1767--    Has_Loop_Entry_Attributes (Flag260)
1768--       Defined in E_Loop entities. Set when the loop is subject to at least
1769--       one attribute 'Loop_Entry. The flag also implies that the loop has
1770--       already been transformed. See Expand_Loop_Entry_Attribute for details.
1771
1772--    Has_Machine_Radix_Clause (Flag83)
1773--       Defined in decimal types and subtypes, set if a Machine_Radix
1774--       representation clause is present. This flag is used to detect
1775--       the error of multiple machine radix clauses for a single type.
1776
1777--    Has_Master_Entity (Flag21)
1778--       Defined in entities that can appear in the scope stack (see spec
1779--       of Sem). It is set if a task master entity (_master) has been
1780--       declared and initialized in the corresponding scope.
1781
1782--    Has_Missing_Return (Flag142)
1783--       Defined in functions and generic functions. Set if there is one or
1784--       more missing return statements in the function. This is used to
1785--       control wrapping of the body in Exp_Ch6 to ensure that the program
1786--       error exception is correctly raised in this case at run time.
1787
1788--    Has_Nested_Block_With_Handler (Flag101)
1789--       Defined in scope entities. Set if there is a nested block within the
1790--       scope that has an exception handler and the two scopes are in the
1791--       same procedure. This is used by the backend for controlling certain
1792--       optimizations to ensure that they are consistent with exceptions.
1793--       See documentation in backend for further details.
1794
1795--    Has_Nested_Subprogram (Flag282)
1796--      Defined in subprogram entities. Set for a subprogram which contains at
1797--      least one nested subprogram.
1798
1799--    Has_Non_Limited_View (synth)
1800--       Defined in E_Incomplete_Type, E_Incomplete_Subtype, E_Class_Wide_Type,
1801--       E_Abstract_State entities. True if their Non_Limited_View attribute
1802--       is present.
1803
1804--    Has_Non_Null_Abstract_State (synth)
1805--       Defined in package entities. True if the package is subject to a non-
1806--       null Abstract_State aspect/pragma.
1807
1808--    Has_Non_Null_Visible_Refinement (synth)
1809--       Defined in E_Abstract_State entities. True if the state has a visible
1810--       refinement of at least one variable or state constituent as expressed
1811--       in aspect/pragma Refined_State.
1812
1813--    Has_Non_Standard_Rep (Flag75) [implementation base type only]
1814--       Defined in all type entities. Set when some representation clause
1815--       or pragma causes the representation of the item to be significantly
1816--       modified. In this category are changes of small or radix for a
1817--       fixed-point type, change of component size for an array, and record
1818--       or enumeration representation clauses, as well as packed pragmas.
1819--       All other representation clauses (e.g. Size and Alignment clauses)
1820--       are not considered to be significant since they do not affect
1821--       stored bit patterns.
1822
1823--    Has_Null_Abstract_State (synth)
1824--       Defined in package entities. True if the package is subject to a null
1825--       Abstract_State aspect/pragma.
1826
1827--    Has_Null_Visible_Refinement (synth)
1828--       Defined in E_Abstract_State entities. True if the state has a visible
1829--       null refinement as expressed in aspect/pragma Refined_State.
1830
1831--    Has_Object_Size_Clause (Flag172)
1832--       Defined in entities for types and subtypes. Set if an Object_Size
1833--       clause has been processed for the type Used to prevent multiple
1834--       Object_Size clauses for a given entity.
1835
1836--    Has_Out_Or_In_Out_Parameter (Flag110)
1837--       Present in subprograms, generic subprograms, entries, and entry
1838--       families. Set if they have at least one OUT or IN OUT parameter
1839--       (allowed for functions only in Ada 2012).
1840
1841--    Has_Own_DIC (Flag3) [base type only]
1842--       Defined in all type entities. Set for a private type and its full view
1843--       when the type is subject to pragma Default_Initial_Condition.
1844
1845--    Has_Own_Invariants (Flag232) [base type only]
1846--       Defined in all type entities. Set on any type which defines at least
1847--       one invariant of its own. The flag is also set on the full view of a
1848--       private type for completeness.
1849
1850--    Has_Partial_Visible_Refinement (Flag296)
1851--       Defined in E_Abstract_State entities. Set when a state has at least
1852--       one refinement constituent subject to indicator Part_Of, and analysis
1853--       is in the region between the declaration of the first constituent for
1854--       this abstract state (in the private part of the package) and the end
1855--       of the package spec or body with visibility over this private part
1856--       (which includes the package itself and its child packages).
1857
1858--    Has_Per_Object_Constraint (Flag154)
1859--       Defined in E_Component entities. Set if the subtype of the component
1860--       has a per object constraint. Per object constraints result from the
1861--       following situations :
1862--
1863--       1. N_Attribute_Reference - when the prefix is the enclosing type and
1864--          the attribute is Access.
1865--       2. N_Discriminant_Association - when the expression uses the
1866--          discriminant of the enclosing type.
1867--       3. N_Index_Or_Discriminant_Constraint - when at least one of the
1868--          individual constraints is a per object constraint.
1869--       4. N_Range - when the lower or upper bound uses the discriminant of
1870--          the enclosing type.
1871--       5. N_Range_Constraint - when the range expression uses the
1872--          discriminant of the enclosing type.
1873
1874--    Has_Pragma_Controlled (Flag27) [implementation base type only]
1875--       Defined in access type entities. It is set if a pragma Controlled
1876--       applies to the access type.
1877
1878--    Has_Pragma_Elaborate_Body (Flag150)
1879--       Defined in all entities. Set in compilation unit entities if a
1880--       pragma Elaborate_Body applies to the compilation unit.
1881
1882--    Has_Pragma_Inline (Flag157)
1883--       Defined in all entities. Set for functions and procedures for which a
1884--       pragma Inline or Inline_Always applies to the subprogram. Note that
1885--       this flag can be set even if Is_Inlined is not set. This happens for
1886--       pragma Inline (if Inline_Active is False). In other words, the flag
1887--       Has_Pragma_Inline represents the formal semantic status, and is used
1888--       for checking semantic correctness. The flag Is_Inlined indicates
1889--       whether inlining is actually active for the entity.
1890
1891--    Has_Pragma_Inline_Always (Flag230)
1892--       Defined in all entities. Set for functions and procedures for which a
1893--       pragma Inline_Always applies. Note that if this flag is set, the flag
1894--       Has_Pragma_Inline is also set.
1895
1896--    Has_Pragma_No_Inline (Flag201)
1897--       Defined in all entities. Set for functions and procedures for which a
1898--       pragma No_Inline applies. Note that if this flag is set, the flag
1899--       Has_Pragma_Inline_Always cannot be set.
1900
1901--    Has_Pragma_Ordered (Flag198) [implementation base type only]
1902--       Defined in entities for enumeration types. If set indicates that a
1903--       valid pragma Ordered was given for the type. This flag is inherited
1904--       by derived enumeration types. We don't need to distinguish the derived
1905--       case since we allow multiple occurrences of this pragma anyway.
1906
1907--    Has_Pragma_Pack (Flag121) [implementation base type only]
1908--       Defined in array and record type entities. If set, indicates that a
1909--       valid pragma Pack was given for the type. Note that this flag is not
1910--       inherited by derived type. See also the Is_Packed flag.
1911
1912--    Has_Pragma_Preelab_Init (Flag221)
1913--       Defined in type and subtype entities. If set indicates that a valid
1914--       pragma Preelaborable_Initialization applies to the type.
1915
1916--    Has_Pragma_Pure (Flag203)
1917--       Defined in all entities. If set, indicates that a valid pragma Pure
1918--       was given for the entity. In some cases, we need to test whether
1919--       Is_Pure was explicitly set using this pragma.
1920
1921--    Has_Pragma_Pure_Function (Flag179)
1922--       Defined in all entities. If set, indicates that a valid pragma
1923--       Pure_Function was given for the entity. In some cases, we need to test
1924--       whether Is_Pure was explicitly set using this pragma. We also set
1925--       this flag for some internal entities that we know should be treated
1926--       as pure for optimization purposes.
1927
1928--    Has_Pragma_Thread_Local_Storage (Flag169)
1929--       Defined in all entities. If set, indicates that a valid pragma
1930--       Thread_Local_Storage was given for the entity.
1931
1932--    Has_Pragma_Unmodified (Flag233)
1933--       Defined in all entities. Can only be set for variables (E_Variable,
1934--       E_Out_Parameter, E_In_Out_Parameter). Set if a valid pragma Unmodified
1935--       applies to the variable, indicating that no warning should be given
1936--       if the entity is never modified. Note that clients should generally
1937--       not test this flag directly, but instead use function Has_Unmodified.
1938
1939--    Has_Pragma_Unreferenced (Flag180)
1940--       Defined in all entities. Set if a valid pragma Unreferenced applies
1941--       to the entity, indicating that no warning should be given if the
1942--       entity has no references, but a warning should be given if it is
1943--       in fact referenced. For private types, this flag is set in both the
1944--       private entity and full entity if the pragma applies to either. Note
1945--       that clients should generally not test this flag directly, but instead
1946--       use function Has_Unreferenced.
1947
1948--  ??? this real description was clobbered
1949
1950--    Has_Pragma_Unreferenced_Objects (Flag212)
1951--       Defined in all entities. Set if a valid pragma Unused applies to an
1952--       entity, indicating that warnings should be given if the entity is
1953--       modified or referenced. This pragma is equivalent to a pair of
1954--       Unmodified and Unreferenced pragmas.
1955
1956--    Has_Pragma_Unused (Flag294)
1957--       Defined in all entries. Set if a valid pragma Unused applies to a
1958--       variable or entity, indicating that warnings should not be given if
1959--       it is never modified or referenced. Note: This pragma is exactly
1960--       equivalent Unmodified and Unreference combined.
1961
1962--    Has_Predicates (Flag250)
1963--       Defined in type and subtype entities. Set if a pragma Predicate or
1964--       Predicate aspect applies to the type or subtype, or if it inherits a
1965--       Predicate aspect from its parent or progenitor types.
1966--
1967--       Note: this flag is set on both partial and full view of types to which
1968--       a Predicate pragma or aspect applies.
1969
1970--    Has_Primitive_Operations (Flag120) [base type only]
1971--       Defined in all type entities. Set if at least one primitive operation
1972--       is defined for the type.
1973
1974--    Has_Private_Ancestor (Flag151)
1975--       Applies to type extensions. True if some ancestor is derived from a
1976--       private type, making some components invisible and aggregates illegal.
1977--       This flag is set at the point of derivation. The legality of the
1978--       aggregate must be rechecked because it also depends on the visibility
1979--       at the point the aggregate is resolved. See sem_aggr.adb. This is part
1980--       of AI05-0115.
1981
1982--    Has_Private_Declaration (Flag155)
1983--       Defined in all entities. Set if it is the defining entity of a private
1984--       type declaration or its corresponding full declaration. This flag is
1985--       thus preserved when the full and the partial views are exchanged, to
1986--       indicate if a full type declaration is a completion. Used for semantic
1987--       checks in E.4(18) and elsewhere.
1988
1989--    Has_Private_Extension (Flag300)
1990--       Defined in tagged types. Set to indicate that the tagged type has some
1991--       private extension. Used to report a warning on public primitives added
1992--       after defining its private extensions.
1993
1994--    Has_Protected (Flag271) [base type only]
1995--       Defined in all type entities. Set on protected types themselves, and
1996--       also (recursively) on any composite type which has a component for
1997--       which Has_Protected is set, unless the protected type is declared in
1998--       the private part of an internal unit. The meaning is that restrictions
1999--       for protected types apply to this type. Note: the flag is not set on
2000--       access types, even if they designate an object that Has_Protected.
2001
2002--    Has_Qualified_Name (Flag161)
2003--       Defined in all entities. Set if the name in the Chars field has
2004--       been replaced by its qualified name, as used for debug output. See
2005--       Exp_Dbug for a full description of qualification requirements. For
2006--       some entities, the name is the fully qualified name, but there are
2007--       exceptions. In particular, for local variables in procedures, we
2008--       do not include the procedure itself or higher scopes. See also the
2009--       flag Has_Fully_Qualified_Name, which is set if the name does indeed
2010--       include the fully qualified name.
2011
2012--    Has_RACW (Flag214)
2013--       Defined in package spec entities. Set if the spec contains the
2014--       declaration of a remote access-to-classwide type.
2015
2016--    Has_Record_Rep_Clause (Flag65) [implementation base type only]
2017--       Defined in record types. Set if a record representation clause has
2018--       been given for this record type. Used to prevent more than one such
2019--       clause for a given record type. Note that this is initially cleared
2020--       for a derived type, even though the representation is inherited. See
2021--       also the flag Has_Specified_Layout.
2022
2023--    Has_Recursive_Call (Flag143)
2024--       Defined in procedures. Set if a direct parameterless recursive call
2025--       is detected while analyzing the body. Used to activate some error
2026--       checks for infinite recursion.
2027
2028--    Has_Shift_Operator (Flag267) [base type only]
2029--       Defined in integer types. Set in the base type of an integer type for
2030--       which at least one of the shift operators is defined.
2031
2032--    Has_Size_Clause (Flag29)
2033--       Defined in entities for types and objects. Set if a size clause is
2034--       defined for the entity. Used to prevent multiple Size clauses for a
2035--       given entity. Note that it is always initially cleared for a derived
2036--       type, even though the Size for such a type is inherited from a Size
2037--       clause given for the parent type.
2038
2039--    Has_Small_Clause (Flag67)
2040--       Defined in ordinary fixed point types (but not subtypes). Indicates
2041--       that a small clause has been given for the entity. Used to prevent
2042--       multiple Small clauses for a given entity. Note that it is always
2043--       initially cleared for a derived type, even though the Small for such
2044--       a type is inherited from a Small clause given for the parent type.
2045
2046--    Has_Specified_Layout (Flag100) [implementation base type only]
2047--       Defined in all type entities. Set for a record type or subtype if
2048--       the record layout has been specified by a record representation
2049--       clause. Note that this differs from the flag Has_Record_Rep_Clause
2050--       in that it is inherited by a derived type. Has_Record_Rep_Clause is
2051--       used to indicate that the type is mentioned explicitly in a record
2052--       representation clause, and thus is not inherited by a derived type.
2053--       This flag is always False for non-record types.
2054
2055--    Has_Specified_Stream_Input (Flag190)
2056--    Has_Specified_Stream_Output (Flag191)
2057--    Has_Specified_Stream_Read (Flag192)
2058--    Has_Specified_Stream_Write (Flag193)
2059--       Defined in all type and subtype entities. Set for a given view if the
2060--       corresponding stream-oriented attribute has been defined by an
2061--       attribute definition clause. When such a clause occurs, a TSS is set
2062--       on the underlying full view; the flags are used to track visibility of
2063--       the attribute definition clause for partial or incomplete views.
2064
2065--    Has_Static_Discriminants (Flag211)
2066--       Defined in record subtypes constrained by discriminant values. Set if
2067--       all the discriminant values have static values, meaning that in the
2068--       case of a variant record, the component list can be trimmed down to
2069--       include only the components corresponding to these discriminants.
2070
2071--    Has_Static_Predicate (Flag269)
2072--       Defined in all types and subtypes. Set if the type (which must be a
2073--       scalar type) has a predicate whose expression is predicate-static.
2074--       This can result from the use of any Predicate, Static_Predicate, or
2075--       Dynamic_Predicate aspect. We can distinguish these cases by testing
2076--       Has_Static_Predicate_Aspect and Has_Dynamic_Predicate_Aspect. See
2077--       description of the latter flag for further information on dynamic
2078--       predicates which are also static.
2079
2080--    Has_Static_Predicate_Aspect (Flag259)
2081--       Defined in all types and subtypes. Set if a Static_Predicate aspect
2082--       applies to the type. Note that we can tell if a static predicate is
2083--       present by looking at Has_Static_Predicate, but this could have come
2084--       from a Predicate aspect or pragma or even from a Dynamic_Predicate
2085--       aspect. When we need to know the difference (e.g. to know what set of
2086--       check policies apply, use this flag and Has_Dynamic_Predicate_Aspect
2087--       to determine which case we have).
2088
2089--    Has_Storage_Size_Clause (Flag23) [implementation base type only]
2090--       Defined in task types and access types. It is set if a Storage_Size
2091--       clause is present for the type. Used to prevent multiple clauses for
2092--       one type. Note that this flag is initially cleared for a derived type
2093--       even though the Storage_Size for such a type is inherited from a
2094--       Storage_Size clause given for the parent type. Note that in the case
2095--       of access types, this flag is defined only in the root type, since a
2096--       storage size clause cannot be given to a derived type.
2097
2098--    Has_Stream_Size_Clause (Flag184)
2099--       Defined in all entities. It is set for types which have a Stream_Size
2100--       clause attribute. Used to prevent multiple Stream_Size clauses for a
2101--       given entity, and also whether it is necessary to check for a stream
2102--       size clause.
2103
2104--    Has_Task (Flag30) [base type only]
2105--       Defined in all type entities. Set on task types themselves, and also
2106--       (recursively) on any composite type which has a component for which
2107--       Has_Task is set. The meaning is that an allocator or declaration of
2108--       such an object must create the required tasks. Note: the flag is not
2109--       set on access types, even if they designate an object that Has_Task.
2110
2111--    Has_Timing_Event (Flag289) [base type only]
2112--       Defined in all type entities. Set on language defined type
2113--       Ada.Real_Time.Timing_Events.Timing_Event, and also (recursively) on
2114--       any composite type which has a component for which Has_Timing_Event
2115--       is set. Used for the No_Local_Timing_Event restriction.
2116
2117--    Has_Thunks (Flag228)
2118--       Applies to E_Constant entities marked Is_Tag. True for secondary tag
2119--       referencing a dispatch table whose contents are pointers to thunks.
2120
2121--    Has_Unchecked_Union (Flag123) [base type only]
2122--       Defined in all type entities. Set on unchecked unions themselves
2123--       and (recursively) on any composite type which has a component for
2124--       which Has_Unchecked_Union is set. The meaning is that a comparison
2125--       operation or 'Valid_Scalars reference for the type is not permitted.
2126--       Note that the flag is not set on access types, even if they designate
2127--       an object that has the flag Has_Unchecked_Union set.
2128
2129--    Has_Unknown_Discriminants (Flag72)
2130--       Defined in all entities. Set for types with unknown discriminants.
2131--       Types can have unknown discriminants either from their declaration or
2132--       through type derivation. The use of this flag exactly meets the spec
2133--       in RM 3.7(26). Note that all class-wide types are considered to have
2134--       unknown discriminants. Note that both flags Has_Discriminants and
2135--       Has_Unknown_Discriminants may be true for a type. Class-wide types and
2136--       their subtypes have unknown discriminants and can have declared ones
2137--       as well. Private types declared with unknown discriminants may have a
2138--       full view that has explicit discriminants, and both flag will be set
2139--       on the partial view, to ensure that discriminants are properly
2140--       inherited in certain contexts.
2141
2142--    Has_Visible_Refinement (Flag263)
2143--       Defined in E_Abstract_State entities. Set when a state has at least
2144--       one refinement constituent and analysis is in the region between
2145--       pragma Refined_State and the end of the package body declarations.
2146
2147--    Has_Volatile_Components (Flag87) [implementation base type only]
2148--       Defined in all types and objects. Set only for an array type or array
2149--       object if a valid pragma Volatile_Components or a valid pragma
2150--       Atomic_Components applies to the type or object. Note that in the case
2151--       of an object, this flag is only set on the object if there was an
2152--       explicit pragma for the object. In other words, the proper test for
2153--       whether an object has volatile components is to see if either the
2154--       object or its base type has this flag set. Note that in the case of a
2155--       type the pragma will be chained to the rep item chain of the first
2156--       subtype in the usual manner.
2157
2158--    Has_Xref_Entry (Flag182)
2159--       Defined in all entities. Set if an entity has an entry in the Xref
2160--       information generated in ali files. This is true for all source
2161--       entities in the extended main source file. It is also true of entities
2162--       in other packages that are referenced directly or indirectly from the
2163--       main source file (indirect reference occurs when the main source file
2164--       references an entity with a type reference. See package Lib.Xref for
2165--       further details).
2166
2167--    Hiding_Loop_Variable (Node8)
2168--       Defined in variables. Set only if a variable of a discrete type is
2169--       hidden by a loop variable in the same local scope, in which case
2170--       the Hiding_Loop_Variable field of the hidden variable points to
2171--       the E_Loop_Parameter entity doing the hiding. Used in processing
2172--       warning messages if the hidden variable turns out to be unused
2173--       or is referenced without being set.
2174
2175--    Homonym (Node4)
2176--       Defined in all entities. Link for list of entities that have the
2177--       same source name and that are declared in the same or enclosing
2178--       scopes. Homonyms in the same scope are overloaded. Used for name
2179--       resolution and for the generation of debugging information.
2180
2181--    Ignore_SPARK_Mode_Pragmas (Flag301)
2182--       Present in concurrent type, entry, operator, [generic] package,
2183--       package body, [generic] subprogram, and subprogram body entities.
2184--       Set when the entity appears in an instance subject to SPARK_Mode
2185--       "off" and indicates that all SPARK_Mode pragmas found within must
2186--       be ignored.
2187
2188--    Implementation_Base_Type (synthesized)
2189--       Applies to all entities. For types, similar to Base_Type, but never
2190--       returns a private type when applied to a non-private type. Instead in
2191--       this case, it always returns the Underlying_Type of the base type, so
2192--       that we still have a concrete type. For entities other than types,
2193--       returns the entity unchanged.
2194
2195--    Import_Pragma (Node35)
2196--       Defined in subprogram entities. Set if a valid pragma Import or pragma
2197--       Import_Function or pragma Import_Procedure applies to the subprogram,
2198--       in which case this field points to the pragma (we can't use the normal
2199--       Rep_Item chain mechanism, because a single pragma Import can apply
2200--       to multiple subprogram entities).
2201
2202--    In_Package_Body (Flag48)
2203--       Defined in package entities. Set on the entity that denotes the
2204--       package (the defining occurrence of the package declaration) while
2205--       analyzing and expanding the package body. Reset on completion of
2206--       analysis/expansion.
2207
2208--    In_Private_Part (Flag45)
2209--       Defined in all entities. Can be set only in package entities and
2210--       objects. For package entities, this flag is set to indicate that the
2211--       private part of the package is being analyzed. The flag is reset at
2212--       the end of the package declaration. For objects it indicates that the
2213--       declaration of the object occurs in the private part of a package.
2214
2215--    Incomplete_Actuals (Elist24)
2216--       Defined on package entities that are instances. Indicates the actuals
2217--       types in the instantiation that are limited views. If this list is
2218--       not empty, the instantiation, which appears in a package declaration,
2219--       is relocated to the corresponding package body, which must have a
2220--       corresponding nonlimited with_clause.
2221
2222--    Initialization_Statements (Node28)
2223--       Defined in constants and variables. For a composite object initialized
2224--       initialized with an aggregate that has been converted to a sequence
2225--       of assignments, points to a block statement containing the
2226--       assignments.
2227
2228--    Inner_Instances (Elist23)
2229--       Defined in generic units. Contains element list of units that are
2230--       instantiated within the given generic. Used to diagnose circular
2231--       instantiations.
2232
2233--    Interface_Alias (Node25)
2234--       Defined in subprograms that cover a primitive operation of an abstract
2235--       interface type. Can be set only if the Is_Hidden flag is also set,
2236--       since such entities are always hidden. Points to its associated
2237--       interface subprogram. It is used to register the subprogram in
2238--       secondary dispatch table of the interface (Ada 2005: AI-251).
2239
2240--    Interface_Name (Node21)
2241--       Defined in constants, variables, exceptions, functions, procedures,
2242--       and packages. Set to Empty unless an export, import, or interface name
2243--       pragma has explicitly specified an external name, in which case it
2244--       references an N_String_Literal node for the specified external name.
2245--       Note that if this field is Empty, and Is_Imported or Is_Exported is
2246--       set, then the default interface name is the name of the entity, cased
2247--       in a manner that is appropriate to the system in use. Note that
2248--       Interface_Name is ignored if an address clause is present (since it
2249--       is meaningless in this case).
2250
2251--    Interfaces (Elist25)
2252--       Defined in record types and subtypes. List of abstract interfaces
2253--       implemented by a tagged type that are not already implemented by the
2254--       ancestors (Ada 2005: AI-251).
2255
2256--    Invariant_Procedure (synthesized)
2257--       Defined in types and subtypes. Set for private types and their full
2258--       views if one or more [class-wide] invariants apply to the type, or
2259--       when the type inherits class-wide invariants from a parent type or
2260--       an interface, or when the type is an array and its component type is
2261--       subject to an invariant, or when the type is record and contains a
2262--       component subject to an invariant (property is recursive). Points to
2263--       to the entity for a procedure which checks all these invariants. The
2264--       invariant procedure takes a single argument of the given type, and
2265--       returns if the invariant holds, or raises exception Assertion_Error
2266--       with an appropriate message if it does not hold. This attribute is
2267--       defined but always Empty for private subtypes.
2268
2269--       Note: the reason this is marked as a synthesized attribute is that the
2270--       way this is stored is as an element of the Subprograms_For_Type field.
2271
2272--    In_Use (Flag8)
2273--       Defined in packages and types. Set when analyzing a use clause for
2274--       the corresponding entity. Reset at end of corresponding declarative
2275--       part. The flag on a type is also used to determine the visibility of
2276--       the primitive operators of the type.
2277
2278--    Is_Abstract_Subprogram (Flag19)
2279--       Defined in all subprograms and entries. Set for abstract subprograms.
2280--       Always False for enumeration literals and entries. See also
2281--       Requires_Overriding.
2282
2283--    Is_Abstract_Type (Flag146)
2284--       Defined in all types. Set for abstract types.
2285
2286--    Is_Access_Constant (Flag69)
2287--       Defined in access types and subtypes. Indicates that the keyword
2288--       constant was present in the access type definition.
2289
2290--    Is_Access_Protected_Subprogram_Type (synthesized)
2291--       Applies to all types, true for named and anonymous access to
2292--       protected subprograms.
2293
2294--    Is_Access_Type (synthesized)
2295--       Applies to all entities, true for access types and subtypes
2296
2297--    Is_Actual_Subtype (Flag293)
2298--       Defined on all types, true for the generated constrained subtypes
2299--       that are built for unconstrained composite actuals.
2300
2301--    Is_Ada_2005_Only (Flag185)
2302--       Defined in all entities, true if a valid pragma Ada_05 or Ada_2005
2303--       applies to the entity which specifically names the entity, indicating
2304--       that the entity is Ada 2005 only. Note that this flag is not set if
2305--       the entity is part of a unit compiled with the normal no-argument form
2306--       of pragma Ada_05 or Ada_2005.
2307
2308--    Is_Ada_2012_Only (Flag199)
2309--       Defined in all entities, true if a valid pragma Ada_12 or Ada_2012
2310--       applies to the entity which specifically names the entity, indicating
2311--       that the entity is Ada 2012 only. Note that this flag is not set if
2312--       the entity is part of a unit compiled with the normal no-argument form
2313--       of pragma Ada_12 or Ada_2012.
2314
2315--    Is_Aliased (Flag15)
2316--       Defined in all entities. Set for objects and types whose declarations
2317--       carry the keyword aliased, and on record components that have the
2318--       keyword. For Ada 2012, also applies to formal parameters.
2319
2320--    Is_Array_Type (synthesized)
2321--       Applies to all entities, true for array types and subtypes
2322
2323--    Is_Asynchronous (Flag81)
2324--       Defined in all type entities and in procedure entities. Set
2325--       if a pragma Asynchronous applies to the entity.
2326
2327--    Is_Atomic (Flag85)
2328--       Defined in all type entities, and also in constants, components, and
2329--       variables. Set if a pragma Atomic or Shared applies to the entity.
2330--       In the case of private and incomplete types, this flag is set in
2331--       both the partial view and the full view.
2332
2333--    Is_Atomic_Or_VFA (synth)
2334--       Defined in all type entities, and also in constants, components and
2335--       variables. Set if a pragma Atomic or Shared or Volatile_Full_Access
2336--       applies to the entity. For many purposes VFA objects should be treated
2337--       the same as Atomic objects, and this predicate is intended for that
2338--       usage. In the case of private and incomplete types, the predicate
2339--       applies to both the partial view and the full view.
2340
2341--    Is_Base_Type (synthesized)
2342--       Applies to type and subtype entities. True if entity is a base type.
2343
2344--    Is_Bit_Packed_Array (Flag122) [implementation base type only]
2345--       Defined in all entities. This flag is set for a packed array type that
2346--       is bit-packed (i.e. the component size is known by the front end and
2347--       is in the range 1-7, 9-15, 17-31, or 33-63). Is_Packed is always set
2348--       if Is_Bit_Packed_Array is set, but it is possible for Is_Packed to be
2349--       set without Is_Bit_Packed_Array if the component size is not known by
2350--       the front-end or for the case of an array having one or more index
2351--       types that are enumeration types with non-standard representation.
2352
2353--    Is_Boolean_Type (synthesized)
2354--       Applies to all entities, true for boolean types and subtypes,
2355--       i.e. Standard.Boolean and all types ultimately derived from it.
2356
2357--    Is_Called (Flag102)
2358--       Defined in subprograms. Returns true if the subprogram is called
2359--       in the unit being compiled or in a unit in the context. Used for
2360--       inlining.
2361
2362--    Is_Character_Type (Flag63)
2363--       Defined in all entities. Set for character types and subtypes,
2364--       i.e. enumeration types that have at least one character literal.
2365
2366--    Is_Checked_Ghost_Entity (Flag277)
2367--       Applies to all entities. Set for abstract states, [generic] packages,
2368--       [generic] subprograms, components, discriminants, formal parameters,
2369--       objects, package bodies, subprogram bodies, and [sub]types subject to
2370--       pragma Ghost or inherit "ghostness" from an enclosing construct, and
2371--       subject to Assertion_Policy Ghost => Check.
2372
2373--    Is_Child_Unit (Flag73)
2374--       Defined in all entities. Set only for defining entities of program
2375--       units that are child units (but False for subunits).
2376
2377--    Is_Class_Wide_Clone (Flag290)
2378--       Defined on subprogram entities. Set for subprograms built in order
2379--       to implement properly the inheritance of class-wide pre- or post-
2380--       conditions when the condition contains calls to other primitives
2381--       of the ancestor type. Used to implement AI12-0195.
2382
2383--    Is_Class_Wide_Equivalent_Type (Flag35)
2384--       Defined in record types and subtypes. Set to True, if the type acts
2385--       as a class-wide equivalent type, i.e. the Equivalent_Type field of
2386--       some class-wide subtype entity references this record type.
2387
2388--    Is_Class_Wide_Type (synthesized)
2389--       Applies to all entities, true for class wide types and subtypes
2390
2391--    Is_Compilation_Unit (Flag149)
2392--       Defined in all entities. Set if the entity is a package or subprogram
2393--       entity for a compilation unit other than a subunit (since we treat
2394--       subunits as part of the same compilation operation as the ultimate
2395--       parent, we do not consider them to be separate units for this flag).
2396
2397--    Is_Completely_Hidden (Flag103)
2398--       Defined on discriminants. Only set on girder discriminants of
2399--       untagged types. When set, the entity is a girder discriminant of a
2400--       derived untagged type which is not directly visible in the derived
2401--       type because the derived type or one of its ancestors have renamed the
2402--       discriminants in the root type. Note: there are girder discriminants
2403--       which are not Completely_Hidden (e.g. discriminants of a root type).
2404
2405--    Is_Composite_Type (synthesized)
2406--       Applies to all entities, true for all composite types and subtypes.
2407--       Either Is_Composite_Type or Is_Elementary_Type (but not both) is true
2408--       of any type.
2409
2410--    Is_Concurrent_Record_Type (Flag20)
2411--       Defined in record types and subtypes. Set if the type was created
2412--       by the expander to represent a task or protected type. For every
2413--       concurrent type, such as record type is constructed, and task and
2414--       protected objects are instances of this record type at run time
2415--       (The backend will replace declarations of the concurrent type using
2416--       the declarations of the corresponding record type). See Exp_Ch9 for
2417--       further details.
2418
2419--    Is_Concurrent_Type (synthesized)
2420--       Applies to all entities, true for task types and subtypes and for
2421--       protected types and subtypes.
2422
2423--    Is_Constant_Object (synthesized)
2424--       Applies to all entities, true for E_Constant, E_Loop_Parameter, and
2425--       E_In_Parameter entities.
2426
2427--    Is_Constrained (Flag12)
2428--       Defined in types or subtypes which may have index, discriminant
2429--       or range constraint (i.e. array types and subtypes, record types
2430--       and subtypes, string types and subtypes, and all numeric types).
2431--       Set if the type or subtype is constrained.
2432
2433--    Is_Constr_Subt_For_U_Nominal (Flag80)
2434--       Defined in all types and subtypes. Set only for the constructed
2435--       subtype of an object whose nominal subtype is unconstrained. Note
2436--       that the constructed subtype itself will be constrained.
2437
2438--    Is_Constr_Subt_For_UN_Aliased (Flag141)
2439--       Defined in all types and subtypes. This flag can be set only if
2440--       Is_Constr_Subt_For_U_Nominal is also set. It indicates that in
2441--       addition the object concerned is aliased. This flag is used by
2442--       the backend to determine whether a template must be constructed.
2443
2444--    Is_Constructor (Flag76)
2445--       Defined in function and procedure entities. Set if a pragma
2446--       CPP_Constructor applies to the subprogram.
2447
2448--    Is_Controlled_Active (Flag42) [base type only]
2449--       Defined in all type entities. Indicates that the type is controlled,
2450--       i.e. is either a descendant of Ada.Finalization.Controlled or of
2451--       Ada.Finalization.Limited_Controlled.
2452
2453--    Is_Controlled (synth) [base type only]
2454--       Defined in all type entities. Set if Is_Controlled_Active is set for
2455--       the type, and Disable_Controlled is not set.
2456
2457--    Is_Controlling_Formal (Flag97)
2458--       Defined in all Formal_Kind entities. Marks the controlling parameters
2459--       of dispatching operations.
2460
2461--    Is_CPP_Class (Flag74)
2462--       Defined in all type entities, set only for tagged types to which a
2463--       valid pragma Import (CPP, ...) or pragma CPP_Class has been applied.
2464
2465--    Is_Decimal_Fixed_Point_Type (synthesized)
2466--       Applies to all type entities, true for decimal fixed point
2467--       types and subtypes.
2468
2469--    Is_Descendant_Of_Address (Flag223)
2470--       Defined in all entities. True if the entity is type System.Address,
2471--       or (recursively) a subtype or derived type of System.Address.
2472
2473--    Is_DIC_Procedure (Flag132)
2474--       Defined in functions and procedures. Set for a generated procedure
2475--       which verifies the assumption of pragma Default_Initial_Condition at
2476--       run time.
2477
2478--    Is_Discrete_Or_Fixed_Point_Type (synthesized)
2479--       Applies to all entities, true for all discrete types and subtypes
2480--       and all fixed-point types and subtypes.
2481
2482--    Is_Discrete_Type (synthesized)
2483--       Applies to all entities, true for all discrete types and subtypes
2484
2485--    Is_Discrim_SO_Function (Flag176)
2486--       Defined in all entities. Set only in E_Function entities that Layout
2487--       creates to compute discriminant-dependent dynamic size/offset values.
2488
2489--    Is_Discriminant_Check_Function (Flag264)
2490--       Defined in all entities. Set only in E_Function entities for functions
2491--       created to do discriminant checks.
2492
2493--    Is_Discriminal (synthesized)
2494--       Applies to all entities, true for renamings of discriminants. Such
2495--       entities appear as constants or IN parameters.
2496
2497--    Is_Dispatch_Table_Entity (Flag234)
2498--       Applies to all entities. Set to indicate to the backend that this
2499--       entity is associated with a dispatch table.
2500
2501--    Is_Dispatching_Operation (Flag6)
2502--       Defined in all entities. Set for procedures, functions, generic
2503--       procedures, and generic functions if the corresponding operation
2504--       is dispatching.
2505
2506--    Is_Dynamic_Scope (synthesized)
2507--       Applies to all Entities. Returns True if the entity is a dynamic
2508--       scope (i.e. a block, subprogram, task_type, entry or extended return
2509--       statement).
2510
2511--    Is_Elaboration_Checks_OK_Id (Flag148)
2512--       Defined in elaboration targets (see terminology in Sem_Elab). Set when
2513--       the target appears in a region which is subject to elabled elaboration
2514--       checks. Such targets are allowed to generate run-time conditional ABE
2515--       checks or guaranteed ABE failures.
2516
2517--    Is_Elementary_Type (synthesized)
2518--       Applies to all entities, true for all elementary types and subtypes.
2519--       Either Is_Composite_Type or Is_Elementary_Type (but not both) is true
2520--       of any type.
2521
2522--    Is_Eliminated (Flag124)
2523--       Defined in type entities, subprogram entities, and object entities.
2524--       Indicates that the corresponding entity has been eliminated by use
2525--       of pragma Eliminate. Also used to mark subprogram entities whose
2526--       declaration and body are within unreachable code that is removed.
2527
2528--    Is_Entry (synthesized)
2529--       Applies to all entities, True only for entry and entry family
2530--       entities and False for all other entity kinds.
2531
2532--    Is_Entry_Formal (Flag52)
2533--       Defined in all entities. Set only for entry formals (which can only
2534--       be in, in-out or out parameters). This flag is used to speed up the
2535--       test for the need to replace references in Exp_Ch2.
2536
2537--    Is_Entry_Wrapper (Flag297)
2538--       Defined on wrappers created for entries that have precondition aspects
2539
2540--    Is_Enumeration_Type (synthesized)
2541--       Defined in all entities, true for enumeration types and subtypes
2542
2543--    Is_Exception_Handler (Flag286)
2544--       Defined in blocks. Set if the block serves only as a scope of an
2545--       exception handler with a choice parameter. Such a block does not
2546--       physically appear in the tree.
2547
2548--    Is_Exported (Flag99)
2549--       Defined in all entities. Set if the entity is exported. For now we
2550--       only allow the export of constants, exceptions, functions, procedures
2551--       and variables, but that may well change later on. Exceptions can only
2552--       be exported in the Java VM implementation of GNAT, which is retired.
2553
2554--    Is_External_State (synthesized)
2555--       Applies to all entities, true for abstract states that are subject to
2556--       option External.
2557
2558--    Is_Finalized_Transient (Flag252)
2559--       Defined in constants, loop parameters of generalized iterators, and
2560--       variables. Set when a transient object has been finalized by one of
2561--       the transient finalization mechanisms. The flag prevents the double
2562--       finalization of the object.
2563
2564--    Is_Finalizer (synthesized)
2565--       Applies to all entities, true for procedures containing finalization
2566--       code to process local or library level objects.
2567
2568--    Is_First_Subtype (Flag70)
2569--       Defined in all entities. True for first subtypes (RM 3.2.1(6)),
2570--       i.e. the entity in the type declaration that introduced the type.
2571--       This may be the base type itself (e.g. for record declarations and
2572--       enumeration type declarations), or it may be the first subtype of
2573--       an anonymous base type (e.g. for integer type declarations or
2574--       constrained array declarations).
2575
2576--    Is_Fixed_Point_Type (synthesized)
2577--       Applies to all entities, true for decimal and ordinary fixed
2578--       point types and subtypes.
2579
2580--    Is_Floating_Point_Type (synthesized)
2581--       Applies to all entities, true for float types and subtypes
2582
2583--    Is_Formal (synthesized)
2584--       Applies to all entities, true for IN, IN OUT and OUT parameters
2585
2586--    Is_Formal_Object (synthesized)
2587--       Applies to all entities, true for generic IN and IN OUT parameters
2588
2589--    Is_Formal_Subprogram (Flag111)
2590--       Defined in all entities. Set for generic formal subprograms.
2591
2592--    Is_For_Access_Subtype (Flag118)
2593--       Defined in E_Private_Subtype and E_Record_Subtype entities. Means the
2594--       sole purpose of the type is to be designated by an Access_Subtype and
2595--       hence should not be expanded into components because the type may not
2596--       have been found or frozen yet.
2597
2598--    Is_Frozen (Flag4)
2599--       Defined in all type and subtype entities. Set if type or subtype has
2600--       been frozen.
2601
2602--    Is_Generic_Actual_Subprogram (Flag274)
2603--       Defined on functions and procedures. Set on the entity of the renaming
2604--       declaration created within an instance for an actual subprogram.
2605--       Used to generate constraint checks on calls to these subprograms, even
2606--       within an instance of a predefined run-time unit, in which checks
2607--       are otherwise suppressed.
2608--
2609--       The flag is also set on the entity of the expression function created
2610--       within an instance, for a function that has external axiomatization,
2611--       for use in GNATprove mode.
2612
2613--    Is_Generic_Actual_Type (Flag94)
2614--       Defined in all type and subtype entities. Set in the subtype
2615--       declaration that renames the generic formal as a subtype of the
2616--       actual. Guarantees that the subtype is not static within the instance.
2617--       Also used during analysis of an instance, to simplify resolution of
2618--       accidental overloading that occurs when different formal types get the
2619--       same actual.
2620
2621--    Is_Generic_Instance (Flag130)
2622--       Defined in all entities. Set to indicate that the entity is an
2623--       instance of a generic unit, or a formal package (which is an instance
2624--       of the template).
2625
2626--    Is_Generic_Subprogram (synthesized)
2627--       Applies to all entities. Yields True for a generic subprogram
2628--       (generic function, generic subprogram), False for all other entities.
2629
2630--    Is_Generic_Type (Flag13)
2631--       Defined in all entities. Set for types which are generic formal types.
2632--       Such types have an Ekind that corresponds to their classification, so
2633--       the Ekind cannot be used to identify generic formal types.
2634
2635--    Is_Generic_Unit (synthesized)
2636--       Applies to all entities. Yields True for a generic unit (generic
2637--       package, generic function, generic procedure), and False for all
2638--       other entities.
2639
2640--    Is_Ghost_Entity (synthesized)
2641--       Applies to all entities. Yields True for abstract states, [generic]
2642--       packages, [generic] subprograms, components, discriminants, formal
2643--       parameters, objects, package bodies, subprogram bodies, and [sub]types
2644--       subject to pragma Ghost or those that inherit the Ghost propery from
2645--       an enclosing construct.
2646
2647--    Is_Hidden (Flag57)
2648--       Defined in all entities. Set for all entities declared in the
2649--       private part or body of a package. Also marks generic formals of a
2650--       formal package declared without a box. For library level entities,
2651--       this flag is set if the entity is not publicly visible. This flag
2652--       is reset when compiling the body of the package where the entity
2653--       is declared, when compiling the private part or body of a public
2654--       child unit, and when compiling a private child unit (see Install_
2655--       Private_Declaration in sem_ch7).
2656
2657--    Is_Hidden_Non_Overridden_Subpgm (Flag2)
2658--       Defined in all entities. Set for implicitly declared subprograms
2659--       that require overriding or are null procedures, and are hidden by
2660--       a non-fully conformant homograph with the same characteristics
2661--       (Ada RM 8.3 12.3/2).
2662
2663--    Is_Hidden_Open_Scope (Flag171)
2664--       Defined in all entities. Set for a scope that contains the
2665--       instantiation of a child unit, and whose entities are not visible
2666--       during analysis of the instance.
2667
2668--    Is_Ignored_Ghost_Entity (Flag278)
2669--       Applies to all entities. Set for abstract states, [generic] packages,
2670--       [generic] subprograms, components, discriminants, formal parameters,
2671--       objects, package bodies, subprogram bodies, and [sub]types subject to
2672--       pragma Ghost or inherit "ghostness" from an enclosing construct, and
2673--       subject to Assertion_Policy Ghost => Ignore.
2674
2675--    Is_Ignored_Transient (Flag295)
2676--       Defined in constants, loop parameters of generalized iterators, and
2677--       variables. Set when a transient object must be processed by one of
2678--       the transient finalization mechanisms. Once marked, a transient is
2679--       intentionally ignored by the general finalization mechanism because
2680--       its clean up actions are context specific.
2681
2682--    Is_Immediately_Visible (Flag7)
2683--       Defined in all entities. Set if entity is immediately visible, i.e.
2684--       is defined in some currently open scope (RM 8.3(4)).
2685
2686--    Is_Implementation_Defined (Flag254)
2687--       Defined in all entities. Set if a pragma Implementation_Defined is
2688--       applied to the pragma. Used to mark all implementation defined
2689--       identifiers in standard library packages, and to implement the
2690--       restriction No_Implementation_Identifiers.
2691
2692--    Is_Imported (Flag24)
2693--       Defined in all entities. Set if the entity is imported. For now we
2694--       only allow the import of exceptions, functions, procedures, packages,
2695--       constants, and variables. Exceptions, packages, and types can only be
2696--       imported in the Java VM implementation, which is retired.
2697
2698--    Is_Incomplete_Or_Private_Type (synthesized)
2699--       Applies to all entities, true for private and incomplete types
2700
2701--    Is_Incomplete_Type (synthesized)
2702--       Applies to all entities, true for incomplete types and subtypes
2703
2704--    Is_Independent (Flag268)
2705--       Defined in all type entities, and also in constants, components and
2706--       variables. Set if a valid pragma or aspect Independent applies to the
2707--       entity, or if a valid pragma or aspect Independent_Components applies
2708--       to the enclosing record type for a component. Also set if a pragma
2709--       Shared or pragma Atomic applies to the entity. In the case of private
2710--       and incomplete types, this flag is set in both the partial view and
2711--       the full view.
2712
2713--    Is_Initial_Condition_Procedure (Flag302)
2714--       Defined in functions and procedures. Set for a generated procedure
2715--       which verifies the assumption of pragma Initial_Condition at run time.
2716
2717--    Is_Inlined (Flag11)
2718--       Defined in all entities. Set for functions and procedures which are
2719--       to be inlined. For subprograms created during expansion, this flag
2720--       may be set directly by the expander to request inlining. Also set
2721--       for packages that contain inlined subprograms, whose bodies must be
2722--       be compiled. Is_Inlined is also set on generic subprograms and is
2723--       inherited by their instances. It is also set on the body entities
2724--       of inlined subprograms. See also Has_Pragma_Inline.
2725
2726--    Is_Inlined_Always (Flag1)
2727--       Defined in subprograms. Set for functions and procedures which are
2728--       always inlined in GNATprove mode. GNATprove uses this flag to know
2729--       when a body does not need to be analyzed. The value of this flag is
2730--       only meaningful if Body_To_Inline is not Empty for the subprogram.
2731
2732--    Is_Instantiated (Flag126)
2733--       Defined in generic packages and generic subprograms. Set if the unit
2734--       is instantiated from somewhere in the extended main source unit. This
2735--       flag is used to control warnings about the unit being uninstantiated.
2736--       Also set in a package that is used as an actual for a generic package
2737--       formal in an instantiation. Also set on a parent instance, in the
2738--       instantiation of a child, which is implicitly declared in the parent.
2739
2740--    Is_Integer_Type (synthesized)
2741--       Applies to all entities, true for integer types and subtypes
2742
2743--    Is_Interface (Flag186)
2744--       Defined in record types and subtypes. Set to indicate that the current
2745--       entity corresponds to an abstract interface. Because abstract
2746--       interfaces are conceptually a special kind of abstract tagged type
2747--       we represent them by means of tagged record types and subtypes
2748--       marked with this attribute. This allows us to reuse most of the
2749--       compiler support for abstract tagged types to implement interfaces
2750--       (Ada 2005: AI-251).
2751
2752--    Is_Internal (Flag17)
2753--       Defined in all entities. Set to indicate an entity created during
2754--       semantic processing (e.g. an implicit type, or a temporary). The
2755--       current uses of this flag are:
2756--
2757--         1) Internal entities (such as temporaries generated for the result
2758--         of an inlined function call or dummy variables generated for the
2759--         debugger). Set to indicate that they need not be initialized, even
2760--         when scalars are initialized or normalized.
2761--
2762--         2) Predefined primitives of tagged types. Set to mark that they
2763--         have specific properties: first they are primitives even if they
2764--         are not defined in the type scope (the freezing point is not
2765--         necessarily in the same scope), and second the predefined equality
2766--         can be overridden by a user-defined equality, no body will be
2767--         generated in this case.
2768--
2769--         3) Object declarations generated by the expander that are implicitly
2770--         imported or exported so that they can be marked in Sprint output.
2771--
2772--         4) Internal entities in the list of primitives of tagged types that
2773--         are used to handle secondary dispatch tables. These entities have
2774--         also the attribute Interface_Alias.
2775
2776--    Is_Interrupt_Handler (Flag89)
2777--       Defined in procedures. Set if a pragma Interrupt_Handler applies
2778--       to the procedure. The procedure must be parameterless, and on all
2779--       targets except AAMP it must be a protected procedure.
2780
2781--    Is_Intrinsic_Subprogram (Flag64)
2782--       Defined in functions and procedures. It is set if a valid pragma
2783--       Interface or Import is present for this subprogram specifying
2784--       convention Intrinsic. Valid means that the name and profile of the
2785--       subprogram match the requirements of one of the recognized intrinsic
2786--       subprograms (see package Sem_Intr for details). Note: the value of
2787--       Convention for such an entity will be set to Convention_Intrinsic,
2788--       but it is the setting of Is_Intrinsic_Subprogram, NOT simply having
2789--       convention set to intrinsic, which causes intrinsic code to be
2790--       generated.
2791
2792--    Is_Invariant_Procedure (Flag257)
2793--       Defined in functions and procedures. Set for a generated invariant
2794--       procedure which verifies the invariants of both the partial and full
2795--       views of a private type or private extension as well as any inherited
2796--       class-wide invariants from parent types or interfaces.
2797
2798--    Is_Itype (Flag91)
2799--       Defined in all entities. Set to indicate that a type is an Itype,
2800--       which means that the declaration for the type does not appear
2801--       explicitly in the tree. Instead the backend will elaborate the type
2802--       when it is first used. Has_Delayed_Freeze can be set for Itypes, and
2803--       the meaning is that the first use (the one which causes the type to be
2804--       defined) will be the freeze node. Note that an important restriction
2805--       on Itypes is that the first use of such a type (the one that causes it
2806--       to be defined) must be in the same scope as the type.
2807
2808--    Is_Known_Non_Null (Flag37)
2809--       Defined in all entities. Relevant (and can be set) only for
2810--       objects of an access type. It is set if the object is currently
2811--       known to have a non-null value (meaning that no access checks
2812--       are needed). The indication can for example come from assignment
2813--       of an access parameter or an allocator whose value is known non-null.
2814--
2815--       Note: this flag is set according to the sequential flow of the
2816--       program, watching the current value of the variable. However, this
2817--       processing can miss cases of changing the value of an aliased or
2818--       constant object, so even if this flag is set, it should not be
2819--       believed if the variable is aliased or volatile. It would be a
2820--       little neater to avoid the flag being set in the first place in
2821--       such cases, but that's trickier, and there is only one place that
2822--       tests the value anyway.
2823--
2824--       The flag is dynamically set and reset as semantic analysis and
2825--       expansion proceeds. Its value is meaningless once the tree is
2826--       fully constructed, since it simply indicates the last state.
2827--       Thus this flag has no meaning to the backend.
2828
2829--    Is_Known_Null (Flag204)
2830--       Defined in all entities. Relevant (and can be set ) only for
2831--       objects of an access type. It is set if the object is currently known
2832--       to have a null value (meaning that a dereference will surely raise
2833--       constraint error exception). The indication can come from an
2834--       assignment or object declaration.
2835--
2836--       The comments above about sequential flow and aliased and volatile for
2837--       the Is_Known_Non_Null flag apply equally to the Is_Known_Null flag.
2838
2839--    Is_Known_Valid (Flag170)
2840--       Defined in all entities. Relevant for types (and subtype) and
2841--       for objects (and enumeration literals) of a discrete type.
2842--
2843--       The purpose of this flag is to implement the requirement stated
2844--       in (RM 13.9.1(9-11)) which require that the use of possibly invalid
2845--       values may not cause programs to become erroneous. See the function
2846--       Checks.Expr_Known_Valid for further details. Note that the setting
2847--       is conservative, in the sense that if the flag is set, it must be
2848--       right. If the flag is not set, nothing is known about the validity.
2849--
2850--       For enumeration literals, the flag is always set, since clearly
2851--       an enumeration literal represents a valid value. Range checks
2852--       where necessary will ensure that this valid value is appropriate.
2853--
2854--       For objects, the flag indicates the state of knowledge about the
2855--       current value of the object. This may be modified during expansion,
2856--       and thus the final value is not relevant to the backend.
2857--
2858--       For types and subtypes, the flag is set if all possible bit patterns
2859--       of length Object_Size (i.e. Esize of the type) represent valid values
2860--       of the type. In general for such tytpes, all values are valid, the
2861--       only exception being the case where an object of the type has an
2862--       explicit size that is greater than Object_Size.
2863--
2864--       For non-discrete objects, the setting of the Is_Known_Valid flag is
2865--       not defined, and is not relevant, since the considerations of the
2866--       requirement in (RM 13.9.1(9-11)) do not apply.
2867--
2868--       The flag is dynamically set and reset as semantic analysis and
2869--       expansion proceeds. Its value is meaningless once the tree is
2870--       fully constructed, since it simply indicates the last state.
2871--       Thus this flag has no meaning to the backend.
2872
2873--    Is_Limited_Composite (Flag106)
2874--       Defined in all entities. Set for composite types that have a limited
2875--       component. Used to enforce the rule that operations on the composite
2876--       type that depend on the full view of the component do not become
2877--       visible until the immediate scope of the composite type itself
2878--       (RM 7.3.1 (5)).
2879
2880--    Is_Limited_Interface (Flag197)
2881--       Defined in record types and subtypes. True for interface types, if
2882--       interface is declared limited, task, protected, or synchronized, or
2883--       is derived from a limited interface.
2884
2885--    Is_Limited_Record (Flag25)
2886--       Defined in all entities. Set to true for record (sub)types if the
2887--       record is declared to be limited. Note that this flag is not set
2888--       simply because some components of the record are limited.
2889
2890--    Is_Local_Anonymous_Access (Flag194)
2891--       Defined in access types. Set for an anonymous access type to indicate
2892--       that the type is created for a record component with an access
2893--       definition, an array component, or (pre-Ada 2012) a standalone object.
2894--       Such anonymous types have an accessibility level equal to that of the
2895--       declaration in which they appear, unlike the anonymous access types
2896--       that are created for access parameters, access discriminants, and
2897--       (as of Ada 2012) stand-alone objects.
2898
2899--    Is_Machine_Code_Subprogram (Flag137)
2900--       Defined in subprogram entities. Set to indicate that the subprogram
2901--       is a machine code subprogram (i.e. its body includes at least one
2902--       code statement). Also indicates that all necessary semantic checks
2903--       as required by RM 13.8(3) have been performed.
2904
2905--    Is_Modular_Integer_Type (synthesized)
2906--       Applies to all entities. True if entity is a modular integer type
2907
2908--    Is_Non_Static_Subtype (Flag109)
2909--       Defined in all type and subtype entities. It is set in some (but not
2910--       all) cases in which a subtype is known to be non-static. Before this
2911--       flag was added, the computation of whether a subtype was static was
2912--       entirely synthesized, by looking at the bounds, and the immediate
2913--       subtype parent. However, this method does not work for some Itypes
2914--       that have no parent set (and the only way to find the immediate
2915--       subtype parent is to go through the tree). For now, this flag is set
2916--       conservatively, i.e. if it is set then for sure the subtype is non-
2917--       static, but if it is not set, then the type may or may not be static.
2918--       Thus the test for a static subtype is that this flag is clear AND that
2919--       the bounds are static AND that the parent subtype (if available to be
2920--       tested) is static. Eventually we should make sure this flag is always
2921--       set right, at which point, these comments can be removed, and the
2922--       tests for static subtypes greatly simplified.
2923
2924--    Is_Null_Init_Proc (Flag178)
2925--       Defined in procedure entities. Set for generated init proc procedures
2926--       (used to initialize composite types), if the code for the procedure
2927--       is null (i.e. is a return and nothing else). Such null initialization
2928--       procedures are generated in case some client is compiled using the
2929--       Initialize_Scalars pragma, generating a call to this null procedure,
2930--       but there is no need to call such procedures within a compilation
2931--       unit, and this flag is used to suppress such calls.
2932
2933--    Is_Null_State (synthesized)
2934--       Applies to all entities, true for an abstract state declared with
2935--       keyword null.
2936
2937--    Is_Numeric_Type (synthesized)
2938--       Applies to all entities, true for all numeric types and subtypes
2939--       (integer, fixed, float).
2940
2941--    Is_Object (synthesized)
2942--       Applies to all entities, true for entities representing objects,
2943--       including generic formal parameters.
2944
2945--    Is_Obsolescent (Flag153)
2946--       Defined in all entities. Set for any entity to which a valid pragma
2947--       or aspect Obsolescent applies.
2948
2949--    Is_Only_Out_Parameter (Flag226)
2950--       Defined in formal parameter entities. Set if this parameter is the
2951--       only OUT parameter for this formal part. If there is more than one
2952--       out parameter, or if there is some other IN OUT parameter then this
2953--       flag is not set in any of them. Used in generation of warnings.
2954
2955--    Is_Ordinary_Fixed_Point_Type (synthesized)
2956--       Applies to all entities, true for ordinary fixed point types and
2957--       subtypes.
2958
2959--    Is_Package_Body_Entity (Flag160)
2960--       Defined in all entities. Set for entities defined at the top level
2961--       of a package body. Used to control externally generated names.
2962
2963--    Is_Package_Or_Generic_Package (synthesized)
2964--       Applies to all entities. True for packages and generic packages.
2965--       False for all other entities.
2966
2967--    Is_Packed (Flag51) [implementation base type only]
2968--       Defined in all type entities. This flag is set only for record and
2969--       array types which have a packed representation. There are four cases
2970--       which cause packing:
2971--
2972--         1. Explicit use of pragma Pack to pack a record.
2973--         2. Explicit use of pragma Pack to pack an array.
2974--         3. Setting Component_Size of an array to a packable value.
2975--         4. Indexing an array with a non-standard enumeration type.
2976--
2977--       For records, Is_Packed is always set if Has_Pragma_Pack is set, and
2978--       can also be set on its own in a derived type which inherited its
2979--       packed status.
2980--
2981--       For arrays, Is_Packed is set if either Has_Pragma_Pack is set and the
2982--       component size is either not known at compile time or known but not
2983--       8/16/32/64 bits, or a Component_Size clause exists and the specified
2984--       value is smaller than 64 bits but not 8/16/32, or if the array has one
2985--       or more index types that are enumeration types with a non-standard
2986--       representation (in GNAT, we store such arrays compactly, using the Pos
2987--       of the enumeration type value). As for the case of records, Is_Packed
2988--       can be set on its own for a derived type.
2989
2990--       Before an array type is frozen, Is_Packed will always be set if
2991--       Has_Pragma_Pack is set. Before the freeze point, it is not possible
2992--       to know the component size, since the component type is not frozen
2993--       until the array type is frozen. Thus Is_Packed for an array type
2994--       before it is frozen means that packed is required. Then if it turns
2995--       out that the component size doesn't require packing, the Is_Packed
2996--       flag gets turned off.
2997
2998--       In the bit-packed array case (i.e. component size is known at compile
2999--       time and is 1-7, 9-15, 17-31 or 33-63), Is_Bit_Packed_Array will be
3000--       set once the array type is frozen.
3001--
3002--    Is_Packed_Array (synth)
3003--       Applies to all entities, true if entity is for a packed array.
3004
3005--    Is_Packed_Array_Impl_Type (Flag138)
3006--       Defined in all entities. This flag is set on the entity for the type
3007--       used to implement a packed array (either a modular type or a subtype
3008--       of Packed_Bytes{1,2,4} in the bit-packed array case, a regular array
3009--       in the non-standard enumeration index case). It is set if and only
3010--       if the type appears in the Packed_Array_Impl_Type field of some other
3011--       entity. It is used by the back end to activate the special processing
3012--       for such types (unchecked conversions that would not otherwise be
3013--       allowed are allowed for such types). If Is_Packed_Array_Impl_Type is
3014--       set in an entity, then the Original_Array_Type field of this entity
3015--       points to the array type for which this is the Packed_Array_Impl_Type.
3016
3017--    Is_Param_Block_Component_Type (Flag215) [base type only]
3018--       Defined in access types. Set to indicate that a type is the type of a
3019--       component of the parameter block record type generated by the compiler
3020--       for an entry or a select statement. Read by CodePeer.
3021
3022--    Is_Partial_Invariant_Procedure (Flag292)
3023--       Defined in functions and procedures. Set for a generated invariant
3024--       procedure which verifies the invariants of the partial view of a
3025--       private type or private extension.
3026
3027--    Is_Potentially_Use_Visible (Flag9)
3028--       Defined in all entities. Set if entity is potentially use visible,
3029--       i.e. it is defined in a package that appears in a currently active
3030--       use clause (RM 8.4(8)). Note that potentially use visible entities
3031--       are not necessarily use visible (RM 8.4(9-11)).
3032
3033--    Is_Predicate_Function (Flag255)
3034--       Present in functions and procedures. Set for generated predicate
3035--       functions.
3036
3037--    Is_Predicate_Function_M (Flag256)
3038--       Present in functions and procedures. Set for special version of
3039--       predicate function generated for use in membership tests, where
3040--       raise expressions are transformed to return False.
3041
3042--    Is_Preelaborated (Flag59)
3043--       Defined in all entities, set in E_Package and E_Generic_Package
3044--       entities to which a pragma Preelaborate is applied, and also in
3045--       all entities within such packages. Note that the fact that this
3046--       flag is set does not necesarily mean that no elaboration code is
3047--       generated for the package.
3048
3049--    Is_Primitive (Flag218)
3050--       Defined in overloadable entities and in generic subprograms. Set to
3051--       indicate that this is a primitive operation of some type, which may
3052--       be a tagged type or an untagged type. Used to verify overriding
3053--       indicators in bodies.
3054
3055--    Is_Primitive_Wrapper (Flag195)
3056--       Defined in functions and procedures created by the expander to serve
3057--       as an indirection mechanism to overriding primitives of concurrent
3058--       types, entries and protected procedures.
3059
3060--    Is_Prival (synthesized)
3061--       Applies to all entities, true for renamings of private protected
3062--       components. Such entities appear as constants or variables.
3063
3064--    Is_Private_Composite (Flag107)
3065--       Defined in composite types that have a private component. Used to
3066--       enforce the rule that operations on the composite type that depend
3067--       on the full view of the component, do not become visible until the
3068--       immediate scope of the composite type itself (7.3.1 (5)). Both this
3069--       flag and Is_Limited_Composite are needed.
3070
3071--    Is_Private_Descendant (Flag53)
3072--       Defined in entities that can represent library units (packages,
3073--       functions, procedures). Set if the library unit is itself a private
3074--       child unit, or if it is the descendant of a private child unit.
3075
3076--    Is_Private_Primitive (Flag245)
3077--       Defined in subprograms. Set if the operation is a primitive of a
3078--       tagged type (procedure or function dispatching on result) whose
3079--       full view has not been seen. Used in particular for primitive
3080--       subprograms of a synchronized type declared between the two views
3081--       of the type, so that the wrapper built for such a subprogram can
3082--       be given the proper signature.
3083
3084--    Is_Private_Type (synthesized)
3085--       Applies to all entities, true for private types and subtypes,
3086--       as well as for record with private types as subtypes.
3087
3088--    Is_Protected_Component (synthesized)
3089--       Applicable to all entities, true if the entity denotes a private
3090--       component of a protected type.
3091
3092--    Is_Protected_Interface (synthesized)
3093--       Defined in types that are interfaces. True if interface is declared
3094--       protected, or is derived from protected interfaces.
3095
3096--    Is_Protected_Record_Type (synthesized)
3097--       Applies to all entities, true if Is_Concurrent_Record_Type is true and
3098--       Corresponding_Concurrent_Type is a protected type.
3099
3100--    Is_Protected_Type (synthesized)
3101--       Applies to all entities, true for protected types and subtypes
3102
3103--    Is_Public (Flag10)
3104--       Defined in all entities. Set to indicate that an entity defined in
3105--       one compilation unit can be referenced from other compilation units.
3106--       If this reference causes a reference in the generated code, for
3107--       example in the case of a variable name, then the backend will generate
3108--       an appropriate external name for use by the linker.
3109
3110--    Is_Pure (Flag44)
3111--       Defined in all entities. Set in all entities of a unit to which a
3112--       pragma Pure is applied except for non-intrinsic imported subprograms,
3113--       and also set for the entity of the unit itself. In addition, this
3114--       flag may be set for any other functions or procedures that are known
3115--       to be side effect free, so in the case of subprograms, the Is_Pure
3116--       flag may be used by the optimizer to imply that it can assume freedom
3117--       from side effects (other than those resulting from assignment to out
3118--       parameters, or to objects designated by access parameters).
3119
3120--    Is_Pure_Unit_Access_Type (Flag189)
3121--       Defined in access type and subtype entities. Set if the type or
3122--       subtype appears in a pure unit. Used to give an error message at
3123--       freeze time if the access type has a storage pool.
3124
3125--    Is_RACW_Stub_Type (Flag244)
3126--       Defined in all types, true for the stub types generated for remote
3127--       access-to-class-wide types.
3128
3129--    Is_Raised (Flag224)
3130--       Defined in exception entities. Set if the entity is referenced by a
3131--       a raise statement.
3132
3133--    Is_Real_Type (synthesized)
3134--       Applies to all entities, true for real types and subtypes
3135
3136--    Is_Record_Type (synthesized)
3137--       Applies to all entities, true for record types and subtypes,
3138--       includes class-wide types and subtypes (which are also records).
3139
3140--    Is_Remote_Call_Interface (Flag62)
3141--       Defined in all entities. Set in E_Package and E_Generic_Package
3142--       entities to which a pragma Remote_Call_Interface is applied, and
3143--       also on entities declared in the visible part of such a package.
3144
3145--    Is_Remote_Types (Flag61)
3146--       Defined in all entities. Set in E_Package and E_Generic_Package
3147--       entities to which a pragma Remote_Types is applied, and also on
3148--       entities declared in the visible part of the spec of such a package.
3149--       Also set for types which are generic formal types to which the
3150--       pragma Remote_Access_Type applies.
3151
3152--    Is_Renaming_Of_Object (Flag112)
3153--       Defined in all entities, set only for a variable or constant for
3154--       which the Renamed_Object field is non-empty and for which the
3155--       renaming is handled by the front end, by macro substitution of
3156--       a copy of the (evaluated) name tree whereever the variable is used.
3157
3158--    Is_Return_Object (Flag209)
3159--       Defined in all object entities. True if the object is the return
3160--       object of an extended_return_statement; False otherwise.
3161
3162--    Is_Safe_To_Reevaluate (Flag249)
3163--       Defined in all entities. Set in variables that are initialized by
3164--       means of an assignment statement. When initialized their contents
3165--       never change and hence they can be seen by the backend as constants.
3166--       See also Is_True_Constant.
3167
3168--    Is_Scalar_Type (synthesized)
3169--       Applies to all entities, true for scalar types and subtypes
3170
3171--    Is_Shared_Passive (Flag60)
3172--       Defined in all entities. Set in E_Package and E_Generic_Package
3173--       entities to which a pragma Shared_Passive is applied, and also in
3174--       all entities within such packages.
3175
3176--    Is_Standard_Character_Type (synthesized)
3177--       Applies to all entities, true for types and subtypes whose root type
3178--       is one of the standard character types (Character, Wide_Character, or
3179--       Wide_Wide_Character).
3180
3181--    Is_Standard_String_Type (synthesized)
3182--       Applies to all entities, true for types and subtypes whose root
3183--       type is one of the standard string types (String, Wide_String, or
3184--       Wide_Wide_String).
3185
3186--    Is_Static_Type (Flag281)
3187--       Defined in entities. Only set for (sub)types. If set, indicates that
3188--       the type is known to be a static type (defined as a discrete type with
3189--       static bounds, a record all of whose component types are static types,
3190--       or an array, all of whose bounds are of a static type, and also have
3191--       a component type that is a static type). See Set_Uplevel_Type for more
3192--       information on how this flag is used.
3193
3194--    Is_Statically_Allocated (Flag28)
3195--       Defined in all entities. This can only be set for exception,
3196--       variable, constant, and type/subtype entities. If the flag is set,
3197--       then the variable or constant must be allocated statically rather
3198--       than on the local stack frame. For exceptions, the meaning is that
3199--       the exception data should be allocated statically (and indeed this
3200--       flag is always set for exceptions, since exceptions do not have
3201--       local scope). For a type, the meaning is that the type must be
3202--       elaborated at the global level rather than locally. No type marked
3203--       with this flag may depend on a local variable, or on any other type
3204--       which does not also have this flag set to True. For a variable or
3205--       or constant, if the flag is set, then the type of the object must
3206--       either be declared at the library level, or it must also have the
3207--       flag set (since to allocate the object statically, its type must
3208--       also be elaborated globally).
3209
3210--    Is_String_Type (synthesized)
3211--       Applies to all type entities. Determines if the given type is a
3212--       string type, i.e. it is directly a string type or string subtype,
3213--       or a string slice type, or an array type with one dimension and a
3214--       component type that is a character type.
3215
3216--    Is_Subprogram (synthesized)
3217--       Applies to all entities, true for function, procedure and operator
3218--       entities.
3219
3220--    Is_Subprogram_Or_Generic_Subprogram
3221--       Applies to all entities, true for function procedure and operator
3222--       entities, and also for the corresponding generic entities.
3223
3224--    Is_Synchronized_Interface (synthesized)
3225--       Defined in types that are interfaces. True if interface is declared
3226--       synchronized, task, or protected, or is derived from a synchronized
3227--       interface.
3228
3229--    Is_Synchronized_State (synthesized)
3230--       Applies to all entities, true for abstract states that are subject to
3231--       option Synchronous.
3232
3233--    Is_Tag (Flag78)
3234--       Defined in E_Component and E_Constant entities. For regular tagged
3235--       type this flag is set on the tag component (whose name is Name_uTag).
3236--       For CPP_Class tagged types, this flag marks the pointer to the main
3237--       vtable (i.e. the one to be extended by derivation).
3238
3239--    Is_Tagged_Type (Flag55)
3240--       Defined in all entities, set for an entity that is a tagged type
3241
3242--    Is_Task_Interface (synthesized)
3243--       Defined in types that are interfaces. True if interface is declared as
3244--       a task interface, or if it is derived from task interfaces.
3245
3246--    Is_Task_Record_Type (synthesized)
3247--       Applies to all entities. True if Is_Concurrent_Record_Type
3248--       Corresponding_Concurrent_Type is a task type.
3249
3250--    Is_Task_Type (synthesized)
3251--       Applies to all entities. True for task types and subtypes
3252
3253--    Is_Thunk (Flag225)
3254--       Defined in all entities. True for subprograms that are thunks: that is
3255--       small subprograms built by the expander for tagged types that cover
3256--       interface types. As part of the runtime call to an interface, thunks
3257--       displace the pointer to the object (pointer named "this" in the C++
3258--       terminology) from a secondary dispatch table to the primary dispatch
3259--       table associated with a given tagged type; if the thunk is a function
3260--       that returns an object which covers an interface type then the thunk
3261--       displaces the pointer to the object from the primary dispatch table to
3262--       the secondary dispatch table associated with the interface type. Set
3263--       by Expand_Interface_Thunk and used by Expand_Call to handle extra
3264--       actuals associated with accessibility level.
3265
3266--    Is_Trivial_Subprogram (Flag235)
3267--       Defined in all entities. Set in subprograms where either the body
3268--       consists of a single null statement, or the first or only statement
3269--       of the body raises an exception. This is used for suppressing certain
3270--       warnings, see Sem_Ch6.Analyze_Subprogram_Body discussion for details.
3271
3272--    Is_True_Constant (Flag163)
3273--       Defined in all entities for constants and variables. Set in constants
3274--       and variables which have an initial value specified but which are
3275--       never assigned, partially or in the whole. For variables, it means
3276--       that the variable was initialized but never modified, and hence can be
3277--       treated as a constant by the code generator. For a constant, it means
3278--       that the constant was not modified by generated code (e.g. to set a
3279--       discriminant in an init proc). Assignments by user or generated code
3280--       will reset this flag. See also Is_Safe_To_Reevaluate.
3281
3282--    Is_Type (synthesized)
3283--       Applies to all entities, true for a type entity
3284
3285--    Is_Unchecked_Union (Flag117) [implementation base type only]
3286--       Defined in all entities. Set only in record types to which the
3287--       pragma Unchecked_Union has been validly applied.
3288
3289--    Is_Underlying_Full_View (Flag298)
3290--       Defined in all entities. Set for types which represent the true full
3291--       view of a private type completed by another private type. For further
3292--       details, see attribute Underlying_Full_View.
3293
3294--    Is_Underlying_Record_View (Flag246) [base type only]
3295--       Defined in all entities. Set only in record types that represent the
3296--       underlying record view. This view is built for derivations of types
3297--       with unknown discriminants; it is a record with the same structure
3298--       as its corresponding record type, but whose parent is the full view
3299--       of the parent in the original type extension.
3300
3301--    Is_Unimplemented (Flag284)
3302--       Defined in all entities. Set for any entity to which a valid pragma
3303--       or aspect Unimplemented applies.
3304
3305--    Is_Unsigned_Type (Flag144)
3306--       Defined in all types, but can be set only for discrete and fixed-point
3307--       type and subtype entities. This flag is only valid if the entity is
3308--       frozen. If set it indicates that the representation is known to be
3309--       unsigned (i.e. that no negative values appear in the range). This is
3310--       normally just a reflection of the lower bound of the subtype or base
3311--       type, but there is one case in which the setting is non-obvious,
3312--       namely the case of an unsigned subtype of a signed type from which
3313--       a further subtype is obtained using variable bounds. This further
3314--       subtype is still unsigned, but this cannot be determined by looking
3315--       at its bounds or the bounds of the corresponding base type.
3316
3317--    Is_Uplevel_Referenced_Entity (Flag283)
3318--       Defined in all entities. Used when unnesting subprograms to indicate
3319--       that an entity is locally defined within a subprogram P, and there is
3320--       a reference to the entity within a subprogram nested within P (at any
3321--       depth). Set for uplevel referenced objects (variables, constants,
3322--       discriminants and loop parameters), and also for upreferenced dynamic
3323--       types, including the cases where the reference is implicit (e.g. the
3324--       type of an array used for computing the location of an element in an
3325--       array. This is used internally in Exp_Unst, see this package for
3326--       further details.
3327
3328--    Is_Valued_Procedure (Flag127)
3329--       Defined in procedure entities. Set if an Import_Valued_Procedure
3330--       or Export_Valued_Procedure pragma applies to the procedure entity.
3331
3332--    Is_Visible_Formal (Flag206)
3333--       Defined in all entities. Set for instances of the formals of a
3334--       formal package. Indicates that the entity must be made visible in the
3335--       body of the instance, to reproduce the visibility of the generic.
3336--       This simplifies visibility settings in instance bodies.
3337
3338--    Is_Visible_Lib_Unit (Flag116)
3339--       Defined in all (root or child) library unit entities. Once compiled,
3340--       library units remain chained to the entities in the parent scope, and
3341--       a separate flag must be used to indicate whether the names are visible
3342--       by selected notation, or not.
3343
3344--    Is_Volatile (Flag16)
3345--       Defined in all type entities, and also in constants, components and
3346--       variables. Set if a pragma Volatile applies to the entity. Also set
3347--       if pragma Shared or pragma Atomic applies to entity. In the case of
3348--       private or incomplete types, this flag is set in both the private
3349--       and full view. The flag is not set reliably on private subtypes,
3350--       and is always retrieved from the base type (but this is not a base-
3351--       type-only attribute because it applies to other entities). Note that
3352--       the backend should use Treat_As_Volatile, rather than Is_Volatile
3353--       to indicate code generation requirements for volatile variables.
3354--       Similarly, any front end test which is concerned with suppressing
3355--       optimizations on volatile objects should test Treat_As_Volatile
3356--       rather than testing this flag.
3357
3358--    Is_Volatile_Full_Access (Flag285)
3359--       Defined in all type entities, and also in constants, components, and
3360--       variables. Set if a pragma Volatile_Full_Access applies to the entity.
3361--       In the case of private and incomplete types, this flag is set in
3362--       both the partial view and the full view.
3363
3364--    Is_Wrapper_Package (synthesized)
3365--       Defined in package entities. Indicates that the package has been
3366--       created as a wrapper for a subprogram instantiation.
3367
3368--    Itype_Printed (Flag202)
3369--       Defined in all type and subtype entities. Set in Itypes if the Itype
3370--       has been printed by Sprint. This is used to avoid printing an Itype
3371--       more than once.
3372
3373--    Kill_Elaboration_Checks (Flag32)
3374--       Defined in all entities. Set by the expander to kill elaboration
3375--       checks which are known not to be needed. Equivalent in effect to
3376--       the use of pragma Suppress (Elaboration_Checks) for that entity
3377--       except that the effect is permanent and cannot be undone by a
3378--       subsequent pragma Unsuppress.
3379
3380--    Kill_Range_Checks (Flag33)
3381--       Defined in all entities. Equivalent in effect to the use of pragma
3382--       Suppress (Range_Checks) for that entity except that the result is
3383--       permanent and cannot be undone by a subsequent pragma Unsuppress.
3384--       This is currently only used in one odd situation in Sem_Ch3 for
3385--       record types, and it would be good to get rid of it???
3386
3387--    Known_To_Have_Preelab_Init (Flag207)
3388--       Defined in all type and subtype entities. If set, then the type is
3389--       known to have preelaborable initialization. In the case of a partial
3390--       view of a private type, it is only possible for this to be set if a
3391--       pragma Preelaborable_Initialization is given for the type. For other
3392--       types, it is never set if the type does not have preelaborable
3393--       initialization, it may or may not be set if the type does have
3394--       preelaborable initialization.
3395
3396--    Last_Aggregate_Assignment (Node30)
3397--       Applies to controlled constants and variables initialized by an
3398--       aggregate. Points to the last statement associated with the expansion
3399--       of the aggregate. The attribute is used by the finalization machinery
3400--       when marking an object as successfully initialized.
3401
3402--    Last_Assignment (Node26)
3403--       Defined in entities for variables, and OUT or IN OUT formals. Set for
3404--       a local variable or formal to point to the left side of an assignment
3405--       statement assigning a value to the variable. Cleared if the value of
3406--       the entity is referenced. Used to warn about dubious assignment
3407--       statements whose value is not used.
3408
3409--    Last_Entity (Node20)
3410--       Defined in all entities which act as scopes to which a list of
3411--       associated entities is attached (blocks, class subtypes and types,
3412--       entries, functions, loops, packages, procedures, protected objects,
3413--       record types and subtypes, private types, task types and subtypes).
3414--       Points to the last entry in the list of associated entities chained
3415--       through the Next_Entity field. Empty if no entities are chained.
3416
3417--    Last_Formal (synthesized)
3418--       Applies to subprograms and subprogram types, and also in entries
3419--       and entry families. Returns last formal of the subprogram or entry.
3420--       The formals are the first entities declared in a subprogram or in
3421--       a subprogram type (the designated type of an Access_To_Subprogram
3422--       definition) or in an entry.
3423
3424--    Limited_View (Node23)
3425--       Defined in non-generic package entities that are not instances. Bona
3426--       fide package with the limited-view list through the first_entity and
3427--       first_private attributes. The elements of this list are the shadow
3428--       entities created for the types and local packages that are declared
3429--       in a package appearing in a limited_with clause (Ada 2005: AI-50217).
3430
3431--    Linker_Section_Pragma (Node33)
3432--       Present in constant, variable, type and subprogram entities. Points
3433--       to a linker section pragma that applies to the entity, or is Empty if
3434--       no such pragma applies. Note that for constants and variables, this
3435--       field may be set as a result of a linker section pragma applied to the
3436--       type of the object.
3437
3438--    Lit_Indexes (Node18)
3439--       Defined in enumeration types and subtypes. Non-empty only for the
3440--       case of an enumeration root type, where it contains the entity for
3441--       the generated indexes entity. See unit Exp_Imgv for full details of
3442--       the nature and use of this entity for implementing the Image and
3443--       Value attributes for the enumeration type in question.
3444
3445--    Lit_Strings (Node16)
3446--       Defined in enumeration types and subtypes. Non-empty only for the
3447--       case of an enumeration root type, where it contains the entity for
3448--       the literals string entity. See unit Exp_Imgv for full details of
3449--       the nature and use of this entity for implementing the Image and
3450--       Value attributes for the enumeration type in question.
3451
3452--    Low_Bound_Tested (Flag205)
3453--       Defined in all entities. Currently this can only be set for formal
3454--       parameter entries of a standard unconstrained one-dimensional array
3455--       or string type. Indicates that an explicit test of the low bound of
3456--       the formal appeared in the code, e.g. in a pragma Assert. If this
3457--       flag is set, warnings about assuming the index low bound to be one
3458--       are suppressed.
3459
3460--    Machine_Radix_10 (Flag84)
3461--       Defined in decimal types and subtypes, set if the Machine_Radix is 10,
3462--       as the result of the specification of a machine radix representation
3463--       clause. Note that it is possible for this flag to be set without
3464--       having Has_Machine_Radix_Clause True. This happens when a type is
3465--       derived from a type with a clause present.
3466
3467--    Master_Id (Node17)
3468--       Defined in access types and subtypes. Empty unless Has_Task is set for
3469--       the designated type, in which case it points to the entity for the
3470--       Master_Id for the access type master. Also set for access-to-limited-
3471--       class-wide types whose root may be extended with task components, and
3472--       for access-to-limited-interfaces because they can be used to reference
3473--       tasks implementing such interface.
3474
3475--    Materialize_Entity (Flag168)
3476--       Defined in all entities. Set only for renamed obects which should be
3477--       materialized for debugging purposes. This means that a memory location
3478--       containing the renamed address should be allocated. This is needed so
3479--       that the debugger can find the entity.
3480
3481--    May_Inherit_Delayed_Rep_Aspects (Flag262)
3482--       Defined in all entities for types and subtypes. Set if the type is
3483--       derived from a type which has delayed rep aspects (marked by the flag
3484--       Has_Delayed_Rep_Aspects being set). In this case, at the freeze point
3485--       for the derived type we know that the parent type is frozen, and if
3486--       a given attribute has not been set for the derived type, we copy the
3487--       value from the parent type. See Freeze.Inherit_Delayed_Rep_Aspects.
3488
3489--    Mechanism (Uint8) (returned as Mechanism_Type)
3490--       Defined in functions and non-generic formal parameters. Indicates
3491--       the mechanism to be used for the function return or for the formal
3492--       parameter. See full description in the spec of Sem_Mech. This field
3493--       is also set (to the default value of zero = Default_Mechanism) in a
3494--       subprogram body entity but not used in this context.
3495
3496--    Modulus (Uint17) [base type only]
3497--       Defined in modular types. Contains the modulus. For the binary case,
3498--       this will be a power of 2, but if Non_Binary_Modulus is set, then it
3499--       will not be a power of 2.
3500
3501--    Must_Be_On_Byte_Boundary (Flag183)
3502--       Defined in entities for types and subtypes. Set if objects of the type
3503--       must always be allocated on a byte boundary (more accurately a storage
3504--       unit boundary). The front end checks that component clauses respect
3505--       this rule, and the backend ensures that record packing does not
3506--       violate this rule. Currently the flag is set only for packed arrays
3507--       longer than 64 bits where the component size is not a power of 2.
3508
3509--    Must_Have_Preelab_Init (Flag208)
3510--       Defined in entities for types and subtypes. Set in the full type of a
3511--       private type or subtype if a pragma Has_Preelaborable_Initialization
3512--       is present for the private type. Used to check that the full type has
3513--       preelaborable initialization at freeze time (this has to be deferred
3514--       to the freeze point because of the rule about overriding Initialize).
3515
3516--    Needs_Debug_Info (Flag147)
3517--       Defined in all entities. Set if the entity requires normal debugging
3518--       information to be generated. This is true of all entities that have
3519--       Comes_From_Source set, and also transitively for entities associated
3520--       with such components (e.g. their types). It is true for all entities
3521--       in Debug_Generated_Code mode (-gnatD switch). This is the flag that
3522--       the backend should check to determine whether or not to generate
3523--       debugging information for an entity. Note that callers should always
3524--       use Sem_Util.Set_Debug_Info_Needed, rather than Set_Needs_Debug_Info,
3525--       so that the flag is set properly on subsidiary entities.
3526
3527--    Needs_No_Actuals (Flag22)
3528--       Defined in callable entities (subprograms, entries, access to
3529--       subprograms) which can be called without actuals because all of
3530--       their formals (if any) have default values. This flag simplifies the
3531--       resolution of the syntactic ambiguity involving a call to these
3532--       entities when the return type is an array type, and a call can be
3533--       interpreted as an indexing of the result of the call. It is also
3534--       used to resolve various cases of entry calls.
3535
3536--    Nested_Scenarios (Elist36)
3537--       Present in [stand alone] subprogram bodies. The list contains all
3538--       nested scenarios (see the terminology in Sem_Elab) which appear within
3539--       the declarations, statements, and exception handlers of the subprogram
3540--       body. The list improves the performance of the ABE Processing phase by
3541--       avoiding a full tree traversal when the same subprogram body is part
3542--       of several distinct paths in the elaboration graph.
3543
3544--    Never_Set_In_Source (Flag115)
3545--       Defined in all entities, but can be set only for variables and
3546--       parameters. This flag is set if the object is never assigned a value
3547--       in user source code, either by assignment or by being used as an out
3548--       or in out parameter. Note that this flag is not reset from using an
3549--       initial value, so if you want to test for this case as well, test the
3550--       Has_Initial_Value flag also.
3551--
3552--       This flag is only for the purposes of issuing warnings, it must not
3553--       be used by the code generator to indicate that the variable is in
3554--       fact a constant, since some assignments in generated code do not
3555--       count (for example, the call to an init proc to assign some but
3556--       not all of the fields in a partially initialized record). The code
3557--       generator should instead use the flag Is_True_Constant.
3558--
3559--       For the purposes of this warning, the default assignment of access
3560--       variables to null is not considered the assignment of a value (so
3561--       the warning can be given for code that relies on this initial null
3562--       value when no other value is ever set).
3563--
3564--       In variables and out parameters, if this flag is set after full
3565--       processing of the corresponding declarative unit, it indicates that
3566--       the variable or parameter was never set, and a warning message can
3567--       be issued.
3568--
3569--       Note: this flag is initially set, and then cleared on encountering
3570--       any construct that might conceivably legitimately set the value.
3571--       Thus during the analysis of a declarative region and its associated
3572--       statement sequence, the meaning of the flag is "not set yet", and
3573--       once this analysis is complete the flag means "never assigned".
3574
3575--       Note: for variables appearing in package declarations, this flag is
3576--       never set. That is because there is no way to tell if some client
3577--       modifies the variable (or, in the case of variables in the private
3578--       part, if some child unit modifies the variables).
3579
3580--       Note: in the case of renamed objects, the flag must be set in the
3581--       ultimate renamed object. Clients noting a possible modification
3582--       should use the Note_Possible_Modification procedure in Sem_Util
3583--       rather than Set_Never_Set_In_Source precisely to deal properly with
3584--       the renaming possibility.
3585
3586--    Next_Component (synthesized)
3587--       Applies to record components. Returns the next component by following
3588--       the chain of declared entities until one is found which corresponds to
3589--       a component (Ekind is E_Component). Any internal types generated from
3590--       the subtype indications of the record components are skipped. Returns
3591--       Empty if no more components.
3592
3593--    Next_Component_Or_Discriminant (synthesized)
3594--      Similar to Next_Component, but includes components and discriminants
3595--      so the input can have either E_Component or E_Discriminant, and the
3596--      same is true for the result. Returns Empty if no more components or
3597--      discriminants in the record.
3598
3599--    Next_Discriminant (synthesized)
3600--       Applies to discriminants returned by First/Next_Discriminant. Returns
3601--       the next language-defined (i.e. perhaps non-girder) discriminant by
3602--       following the chain of declared entities as long as the kind of the
3603--       entity corresponds to a discriminant. Note that the discriminants
3604--       might be the only components of the record. Returns Empty if there
3605--       are no more discriminants.
3606
3607--    Next_Entity (Node2)
3608--       Defined in all entities. The entities of a scope are chained, with
3609--       the head of the list being in the First_Entity field of the scope
3610--       entity. All entities use the Next_Entity field as a forward pointer
3611--       for this list, with Empty indicating the end of the list. Since this
3612--       field is in the base part of the entity, the access routines for this
3613--       field are in Sinfo.
3614
3615--    Next_Formal (synthesized)
3616--       Applies to the entity for a formal parameter. Returns the next formal
3617--       parameter of the subprogram or subprogram type. Returns Empty if there
3618--       are no more formals.
3619
3620--    Next_Formal_With_Extras (synthesized)
3621--       Applies to the entity for a formal parameter. Returns the next
3622--       formal parameter of the subprogram or subprogram type. Returns
3623--       Empty if there are no more formals. The list returned includes
3624--       all the extra formals (see description of Extra_Formal field)
3625
3626--    Next_Index (synthesized)
3627--       Applies to array types and subtypes and to string types and
3628--       subtypes. Yields the next index. The first index is obtained by
3629--       using the First_Index attribute, and then subsequent indexes are
3630--       obtained by applying Next_Index to the previous index. Empty is
3631--       returned to indicate that there are no more indexes. Note that
3632--       unlike most attributes in this package, Next_Index applies to
3633--       nodes for the indexes, not to entities.
3634
3635--    Next_Inlined_Subprogram (Node12)
3636--       Defined in subprograms. Used to chain inlined subprograms used in
3637--       the current compilation, in the order in which they must be compiled
3638--       by the backend to ensure that all inlinings are performed.
3639
3640--    Next_Literal (synthesized)
3641--       Applies to enumeration literals, returns the next literal, or
3642--       Empty if applied to the last literal. This is actually a synonym
3643--       for Next, but its use is preferred in this context.
3644
3645--    No_Dynamic_Predicate_On_Actual (Flag276)
3646--       Defined in discrete types. Set for generic formal types that are used
3647--       in loops and quantified expressions. The corresponing actual cannot
3648--       have dynamic predicates.
3649
3650--    No_Pool_Assigned (Flag131) [root type only]
3651--       Defined in access types. Set if a storage size clause applies to the
3652--       variable with a static expression value of zero. This flag is used to
3653--       generate errors if any attempt is made to allocate or free an instance
3654--       of such an access type. This is set only in the root type, since
3655--       derived types must have the same pool.
3656
3657--    No_Predicate_On_Actual (Flag275)
3658--       Defined in discrete types. Set for generic formal types that are used
3659--       in the spec of a generic package, in constructs that forbid discrete
3660--       types with predicates.
3661
3662--    No_Reordering (Flag239) [implementation base type only]
3663--       Defined in record types. Set only for a base type to which a valid
3664--       pragma No_Component_Reordering applies.
3665
3666--    No_Return (Flag113)
3667--       Defined in all entities. Always false except in the case of procedures
3668--       and generic procedures for which a pragma No_Return is given.
3669
3670--    No_Strict_Aliasing (Flag136) [base type only]
3671--       Defined in access types. Set to direct the backend to avoid any
3672--       optimizations based on an assumption about the aliasing status of
3673--       objects designated by the access type. For the case of the gcc
3674--       backend, the effect is as though all references to objects of
3675--       the type were compiled with -fno-strict-aliasing. This flag is
3676--       set if an unchecked conversion with the access type as a target
3677--       type occurs in the same source unit as the declaration of the
3678--       access type, or if an explicit pragma No_Strict_Aliasing applies.
3679
3680--    No_Tagged_Streams_Pragma (Node32)
3681--       Present in all subtype and type entities. Set for tagged types and
3682--       subtypes (i.e. entities with Is_Tagged_Type set True) if a valid
3683--       pragma/aspect applies to the type.
3684
3685--    Non_Binary_Modulus (Flag58) [base type only]
3686--       Defined in all subtype and type entities. Set for modular integer
3687--       types if the modulus value is other than a power of 2.
3688
3689--    Non_Limited_View (Node19)
3690--       Defined in abstract states and incomplete types that act as shadow
3691--       entities created when analysing a limited with clause (Ada 2005:
3692--       AI-50217). Points to the defining entity of the original declaration.
3693
3694--    Nonzero_Is_True (Flag162) [base type only]
3695--       Defined in enumeration types. Set if any non-zero value is to be
3696--       interpreted as true. Currently this is set for derived Boolean
3697--       types which have a convention of C, C++ or Fortran.
3698
3699--    Normalized_First_Bit (Uint8)
3700--       Defined in components and discriminants. Indicates the normalized
3701--       value of First_Bit for the component, i.e. the offset within the
3702--       lowest addressed storage unit containing part or all of the field.
3703--       Set to No_Uint if no first bit position is assigned yet.
3704
3705--    Normalized_Position (Uint14)
3706--       Defined in components and discriminants. Indicates the normalized
3707--       value of Position for the component, i.e. the offset in storage
3708--       units from the start of the record to the lowest addressed storage
3709--       unit containing part or all of the field.
3710
3711--    Normalized_Position_Max (Uint10)
3712--       Defined in components and discriminants. For almost all cases, this
3713--       is the same as Normalized_Position. The one exception is for the case
3714--       of a discriminated record containing one or more arrays whose length
3715--       depends on discriminants. In this case, the Normalized_Position_Max
3716--       field represents the maximum possible value of Normalized_Position
3717--       assuming min/max values for discriminant subscripts in all fields.
3718--       This is used by Layout in front end layout mode to properly compute
3719--       the maximum size of such records (needed for allocation purposes when
3720--       there are default discriminants, and also for the 'Size value).
3721
3722--    Number_Dimensions (synthesized)
3723--       Applies to array types and subtypes. Returns the number of dimensions
3724--       of the array type or subtype as a value of type Pos.
3725
3726--    Number_Entries (synthesized)
3727--       Applies to concurrent types. Returns the number of entries that are
3728--       declared within the task or protected definition for the type.
3729
3730--    Number_Formals (synthesized)
3731--       Applies to subprograms and subprogram types. Yields the number of
3732--       formals as a value of type Pos.
3733
3734--    OK_To_Rename (Flag247)
3735--       Defined only in entities for variables. If this flag is set, it
3736--       means that if the entity is used as the initial value of an object
3737--       declaration, the object declaration can be safely converted into a
3738--       renaming to avoid an extra copy. This is set for variables which are
3739--       generated by the expander to hold the result of evaluating some
3740--       expression. Most notably, the local variables used to store the result
3741--       of concatenations are so marked (see Exp_Ch4.Expand_Concatenate). It
3742--       is only worth setting this flag for composites, since for primitive
3743--       types, it is cheaper to do the copy.
3744
3745--    Optimize_Alignment_Space (Flag241)
3746--       Defined in type, subtype, variable, and constant entities. This
3747--       flag records that the type or object is to be layed out in a manner
3748--       consistent with Optimize_Alignment (Space) mode. The compiler and
3749--       binder ensure a consistent view of any given type or object. If pragma
3750--       Optimize_Alignment (Off) mode applies to the type/object, then neither
3751--       of the flags Optimize_Alignment_Space/Optimize_Alignment_Time is set.
3752
3753--    Optimize_Alignment_Time (Flag242)
3754--       Defined in type, subtype, variable, and constant entities. This
3755--       flag records that the type or object is to be layed out in a manner
3756--       consistent with Optimize_Alignment (Time) mode. The compiler and
3757--       binder ensure a consistent view of any given type or object. If pragma
3758--       Optimize_Alignment (Off) mode applies to the type/object, then neither
3759--       of the flags Optimize_Alignment_Space/Optimize_Alignment_Time is set.
3760
3761--    Original_Access_Type (Node28)
3762--       Defined in E_Access_Subprogram_Type entities. Set only if the access
3763--       type was generated by the expander as part of processing an access-
3764--       to-protected-subprogram type. Points to the access-to-protected-
3765--       subprogram type.
3766
3767--    Original_Array_Type (Node21)
3768--       Defined in modular types and array types and subtypes. Set only if
3769--       the Is_Packed_Array_Impl_Type flag is set, indicating that the type
3770--       is the implementation type for a packed array, and in this case it
3771--       points to the original array type for which this is the packed
3772--       array implementation type.
3773
3774--    Original_Protected_Subprogram (Node41)
3775--       Defined in functions and procedures. Set only on internally built
3776--       dispatching subprograms of protected types to reference their original
3777--       non-dispatching protected subprogram since their names differ.
3778
3779--    Original_Record_Component (Node22)
3780--       Defined in components, including discriminants. The usage depends
3781--       on whether the record is a base type and whether it is tagged.
3782--
3783--       In base tagged types:
3784--         When the component is inherited in a record extension, it points
3785--         to the original component (the entity of the ancestor component
3786--         which is not itself inherited) otherwise it points to itself. The
3787--         backend uses this attribute to implement the automatic dereference
3788--         in the extension and to apply the transformation:
3789--
3790--            Rec_Ext.Comp -> Rec_Ext.Parent. ... .Parent.Comp
3791--
3792--       In base untagged types:
3793--         Always points to itself except for non-girder discriminants, where
3794--         it points to the girder discriminant it renames.
3795--
3796--       In subtypes (tagged and untagged):
3797--         Points to the component in the base type.
3798
3799--    Overlays_Constant (Flag243)
3800--       Defined in all entities. Set only for E_Constant or E_Variable for
3801--       which there is an address clause that causes the entity to overlay
3802--       a constant object.
3803
3804--    Overridden_Operation (Node26)
3805--       Defined in subprograms. For overriding operations, points to the
3806--       user-defined parent subprogram that is being overridden. Note: this
3807--       attribute uses the same field as Static_Initialization. The latter
3808--       is only defined for internal initialization procedures, for which
3809--       Overridden_Operation is irrelevant. Thus this attribute must not be
3810--       set for init_procs.
3811
3812--    Package_Instantiation (Node26)
3813--       Defined in packages and generic packages. When defined, this field
3814--       references an N_Generic_Instantiation node associated with an
3815--       instantiated package. In the case where the referenced node has
3816--       been rewritten to an N_Package_Specification, the instantiation
3817--       node is available from the Original_Node field of the package spec
3818--       node. This is currently not guaranteed to be set in all cases, but
3819--       when set, the field is used in Get_Package_Instantiation_Node as
3820--       one of the means of obtaining the instantiation node. Eventually
3821--       it should be set in all cases, including package entities associated
3822--       with formal packages. ???
3823
3824--    Packed_Array_Impl_Type (Node23)
3825--       Defined in array types and subtypes, except for the string literal
3826--       subtype case, if the corresponding type is packed and implemented
3827--       specially (either bit-packed or packed to eliminate holes in the
3828--       non-contiguous enumeration index types). References the type used to
3829--       represent the packed array, which is either a modular type for short
3830--       static arrays or an array of System.Unsigned in the bit-packed case,
3831--       or a regular array in the non-standard enumeration index case. Note
3832--       that in some situations (internal types and references to fields of
3833--       variant records), it is not always possible to construct this type in
3834--       advance of its use. If this field is empty, then the necessary type
3835--       is declared on the fly for each reference to the array.
3836
3837--    Parameter_Mode (synthesized)
3838--       Applies to formal parameter entities. This is a synonym for Ekind,
3839--       used when obtaining the formal kind of a formal parameter (the result
3840--       is one of E_[In/Out/In_Out]_Parameter).
3841
3842--    Parent_Subtype (Node19) [base type only]
3843--       Defined in E_Record_Type. Set only for derived tagged types, in which
3844--       case it points to the subtype of the parent type. This is the type
3845--       that is used as the Etype of the _parent field.
3846
3847--    Part_Of_Constituents (Elist10)
3848--       Present in abstract state and variable entities. Contains all
3849--       constituents that are subject to indicator Part_Of (both aspect and
3850--       option variants).
3851
3852--    Part_Of_References (Elist11)
3853--       Present in variable entities. Contains all references to the variable
3854--       when it is subject to pragma Part_Of. If the variable is a constituent
3855--       of a single protected/task type, the references are examined as they
3856--       must appear only within the type defintion and the corresponding body.
3857
3858--    Partial_Invariant_Procedure (synthesized)
3859--       Defined in types and subtypes. Set for private types when one or more
3860--       [class-wide] type invariants apply to them. Points to the entity for a
3861--       procedure which checks the invariant. This invariant procedure takes a
3862--       single argument of the given type, and returns if the invariant holds,
3863--       or raises exception Assertion_Error with an appropriate message if it
3864--       does not hold. This attribute is defined but always Empty for private
3865--       subtypes. This attribute is also set for the corresponding full type.
3866--
3867--       Note: the reason this is marked as a synthesized attribute is that the
3868--       way this is stored is as an element of the Subprograms_For_Type field.
3869
3870--    Partial_Refinement_Constituents (synthesized)
3871--       Defined in abstract state entities. Returns the constituents that
3872--       refine the state in the current scope, which are allowed in a global
3873--       refinement in this scope. These consist of those constituents that are
3874--       abstract states with no or only partial refinement visible, and those
3875--       that are not themselves abstract states.
3876
3877--    Partial_View_Has_Unknown_Discr (Flag280)
3878--       Present in all types. Set to Indicate that the partial view of a type
3879--       has unknown discriminants. A default initialization of an object of
3880--       the type does not require an invariant check (AI12-0133).
3881
3882--    Pending_Access_Types (Elist15)
3883--       Defined in all types. Set for incomplete, private, Taft-amendment
3884--       types, and their corresponding full views. This list contains all
3885--       access types, both named and anonymous, declared between the partial
3886--       and the full view. The list is used by the finalization machinery to
3887--       ensure that the finalization masters of all pending access types are
3888--       fully initialized when the full view is frozen.
3889
3890--    Postconditions_Proc (Node14)
3891--       Defined in functions, procedures, entries, and entry families. Refers
3892--       to the entity of the _Postconditions procedure used to check contract
3893--       assertions on exit from a subprogram.
3894
3895--    Predicate_Function (synthesized)
3896--       Defined in all types. Set for types for which (Has_Predicates is True)
3897--       and for which a predicate procedure has been built that tests that the
3898--       specified predicates are True. Contains the entity for the function
3899--       which takes a single argument of the given type, and returns True if
3900--       the predicate holds and False if it does not.
3901--
3902--       Note: flag Has_Predicate does not imply that Predicate_Function is set
3903--       to a non-empty entity; this happens, for example, for itypes created
3904--       when instantiating generic units with private types with predicates.
3905--       However, if an explicit pragma Predicate or Predicate aspect is given
3906--       either for private or full type declaration then both Has_Predicates
3907--       and a non-empty Predicate_Function will be set on both the partial and
3908--       full views of the type.
3909--
3910--       Note: the reason this is marked as a synthesized attribute is that the
3911--       way this is stored is as an element of the Subprograms_For_Type field.
3912
3913--    Predicate_Function_M (synthesized)
3914--       Defined in all types. Present only if Predicate_Function is present,
3915--       and only if the predicate function has Raise_Expression nodes. It
3916--       is the special version created for membership tests, where if one of
3917--       these raise expressions is executed, the result is to return False.
3918
3919--    Predicates_Ignored (Flag288)
3920--       Defined on all types. Indicates whether the subtype declaration is in
3921--       a context where Assertion_Policy is Ignore, in which case no checks
3922--       (static or dynamic) must be generated for objects of the type.
3923
3924--    Primitive_Operations (synthesized)
3925--       Defined in concurrent types, tagged record types and subtypes, tagged
3926--       private types and tagged incomplete types. For concurrent types whose
3927--       Corresponding_Record_Type (CRT) is available, returns the list of
3928--       Direct_Primitive_Operations of its CRT; otherwise returns No_Elist.
3929--       For all the other types returns the Direct_Primitive_Operations.
3930
3931--    Prival (Node17)
3932--       Defined in private components of protected types. Refers to the entity
3933--       of the component renaming declaration generated inside protected
3934--       subprograms, entries or barrier functions.
3935
3936--    Prival_Link (Node20)
3937--       Defined in constants and variables which rename private components of
3938--       protected types. Set to the original private component.
3939
3940--    Private_Dependents (Elist18)
3941--       Defined in private (sub)types. Records the subtypes of the private
3942--       type, derivations from it, and records and arrays with components
3943--       dependent on the type.
3944--
3945--       The subtypes are traversed when installing and deinstalling (the full
3946--       view of) a private type in order to ensure correct view of the
3947--       subtypes.
3948--
3949--       Used in similar fashion for incomplete types: holds list of subtypes
3950--       of these incomplete types that have discriminant constraints. The
3951--       full views of these subtypes are constructed when the full view of
3952--       the incomplete type is processed.
3953
3954--       In addition, if the incomplete type is the designated type in an
3955--       access definition for an access parameter, the operation may be
3956--       a dispatching primitive operation, which is only known when the full
3957--       declaration of the type is seen. Subprograms that have such an
3958--       access parameter are also placed in the list of private_dependents.
3959
3960--    Private_View (Node22)
3961--       For each private type, three entities are allocated, the private view,
3962--       the full view, and the shadow entity. The shadow entity contains a
3963--       copy of the private view and is used for restoring the proper private
3964--       view after a region in which the full view is visible (and is copied
3965--       into the entity normally used for the private view during this period
3966--       of visibility). The Private_View field is self-referential when the
3967--       private view lives in its normal entity, but in the copy that is made
3968--       in the shadow entity, it points to the proper location in which to
3969--       restore the private view saved in the shadow.
3970
3971--    Protected_Body_Subprogram (Node11)
3972--       Defined in protected operations. References the entity for the
3973--       subprogram which implements the body of the operation.
3974
3975--    Protected_Formal (Node22)
3976--       Defined in formal parameters (in, in out and out parameters). Used
3977--       only for formals of protected operations. References corresponding
3978--       formal parameter in the unprotected version of the operation that
3979--       is created during expansion.
3980
3981--    Protected_Subprogram (Node39)
3982--       Defined in functions and procedures. Set for the pair of subprograms
3983--       which emulate the runtime semantics of a protected subprogram. Denotes
3984--       the entity of the origial protected subprogram.
3985
3986--    Protection_Object (Node23)
3987--       Applies to protected entries, entry families and subprograms. Denotes
3988--       the entity which is used to rename the _object component of protected
3989--       types.
3990
3991--    Reachable (Flag49)
3992--       Defined in labels. The flag is set over the range of statements in
3993--       which a goto to that label is legal.
3994
3995--    Receiving_Entry (Node19)
3996--       Defined in procedures. Set for an internally generated procedure which
3997--       wraps the original statements of an accept alternative. Designates the
3998--       entity of the task entry being accepted.
3999
4000--    Referenced (Flag156)
4001--       Defined in all entities. Set if the entity is referenced, except for
4002--       the case of an appearance of a simple variable that is not a renaming
4003--       as the left side of an assignment in which case Referenced_As_LHS is
4004--       set instead, or a similar appearance as an out parameter actual, in
4005--       which case Referenced_As_Out_Parameter is set.
4006
4007--    Referenced_As_LHS (Flag36):
4008--       Defined in all entities. This flag is set instead of Referenced if a
4009--       simple variable that is not a renaming appears as the left side of an
4010--       assignment. The reason we distinguish this kind of reference is that
4011--       we have a separate warning for variables that are only assigned and
4012--       never read.
4013
4014--    Referenced_As_Out_Parameter (Flag227):
4015--       Defined in all entities. This flag is set instead of Referenced if a
4016--       simple variable that is not a renaming appears as an actual for an out
4017--       formal. The reason we distinguish this kind of reference is that
4018--       we have a separate warning for variables that are only assigned and
4019--       never read, and out parameters are a special case.
4020
4021--    Refinement_Constituents (Elist8)
4022--       Present in abstract state entities. Contains all the constituents that
4023--       refine the state, in other words, all the hidden states that appear in
4024--       the constituent_list of aspect/pragma Refined_State.
4025
4026--    Register_Exception_Call (Node20)
4027--       Defined in exception entities. When an exception is declared,
4028--       a call is expanded to Register_Exception. This field points to
4029--       the expanded N_Procedure_Call_Statement node for this call. It
4030--       is used for Import/Export_Exception processing to modify the
4031--       register call to make appropriate entries in the special tables
4032--       used for handling these pragmas at run time.
4033
4034--    Related_Array_Object (Node25)
4035--       Defined in array types and subtypes. Used only for the base type
4036--       and subtype created for an anonymous array object. Set to point
4037--       to the entity of the corresponding array object. Currently used
4038--       only for type-related error messages.
4039
4040--    Related_Expression (Node24)
4041--       Defined in variables and types. When Set for internally generated
4042--       entities, it may be used to denote the source expression whose
4043--       elaboration created the variable declaration. If set, it is used
4044--       for generating clearer messages from CodePeer. It is used on source
4045--       entities that are variables in iterator specifications, to provide
4046--       a link to the container that is the domain of iteration. This allows
4047--       for better cross-reference information when the loop modifies elements
4048--       of the container, and suppresses spurious warnings.
4049--
4050--       Shouldn't it also be used for the same purpose in errout? It seems
4051--       odd to have two mechanisms here???
4052
4053--    Related_Instance (Node15)
4054--       Defined in the wrapper packages created for subprogram instances.
4055--       The internal subprogram that implements the instance is inside the
4056--       wrapper package, but for debugging purposes its external symbol
4057--       must correspond to the name and scope of the related instance.
4058
4059--    Related_Type (Node27)
4060--       Defined in components, constants and variables. Set when there is an
4061--       associated dispatch table to point to entities containing primary or
4062--       secondary tags. Not set in the _tag component of record types.
4063
4064--    Relative_Deadline_Variable (Node28) [implementation base type only]
4065--       Defined in task type entities. This flag is set if a valid and
4066--       effective pragma Relative_Deadline applies to the base type. Points
4067--       to the entity for a variable that is created to hold the value given
4068--       in a Relative_Deadline pragma for a task type.
4069
4070--    Renamed_Entity (Node18)
4071--       Defined in exception, generic unit, package, and subprogram entities.
4072--       Set when the entity is defined by a renaming declaration. Denotes the
4073--       renamed entity, or transitively the ultimate renamed entity if there
4074--       is a chain of renaming declarations. Empty if no renaming.
4075
4076--    Renamed_In_Spec (Flag231)
4077--       Defined in package entities. If a package renaming occurs within
4078--       a package spec, then this flag is set on the renamed package. The
4079--       purpose is to prevent a warning about unused entities in the renamed
4080--       package. Such a warning would be inappropriate since clients of the
4081--       package can see the entities in the package via the renaming.
4082
4083--    Renamed_Object (Node18)
4084--       Defined in components, constants, discriminants, formal parameters,
4085--       generic formals, loop parameters, and variables. Set to non-Empty if
4086--       the object was declared by a renaming declaration. For constants and
4087--       variables, the attribute references the tree node for the name of the
4088--       renamed object. For formal parameters, the field is used in inlining
4089--       and maps the entities of all formal parameters of a subprogram to the
4090--       entities of the corresponding actuals. For formals of a task entry,
4091--       the attribute denotes the local renaming that replaces the actual
4092--       within an accept statement. For all remaining cases (discriminants,
4093--       loop parameters) the field is Empty.
4094
4095--    Renaming_Map (Uint9)
4096--       Defined in generic subprograms, generic packages, and their
4097--       instances. Also defined in the instances of the corresponding
4098--       bodies. Denotes the renaming map (generic entities => instance
4099--       entities) used to construct the instance by givin an index into
4100--       the tables used to represent these maps. See Sem_Ch12 for further
4101--       details. The maps for package instances are also used when the
4102--       instance is the actual corresponding to a formal package.
4103
4104--    Requires_Overriding (Flag213)
4105--       Defined in all subprograms and entries. Set for subprograms that
4106--       require overriding as defined by RM-2005-3.9.3(6/2). Note that this
4107--       is True only for implicitly declared subprograms; it is not set on the
4108--       parent type's subprogram. See also Is_Abstract_Subprogram.
4109
4110--    Return_Applies_To (Node8)
4111--       Defined in E_Return_Statement. Points to the entity representing
4112--       the construct to which the return statement applies, as defined in
4113--       RM-6.5(4/2). Note that a (simple) return statement within an
4114--       extended_return_statement applies to the extended_return_statement,
4115--       even though it causes the whole function to return.
4116
4117--    Return_Present (Flag54)
4118--       Defined in function and generic function entities. Set if the
4119--       function contains a return statement (used for error checking).
4120--       This flag can also be set in procedure and generic procedure
4121--       entities (for convenience in setting it), but is only tested
4122--       for the function case.
4123
4124--    Returns_By_Ref (Flag90)
4125--       Defined in function entities. Set if the function returns the result
4126--       by reference, either because its return type is a by-reference-type
4127--       or because the function explicitly uses the secondary stack.
4128
4129--    Reverse_Bit_Order (Flag164) [base type only]
4130--       Defined in all record type entities. Set if entity has a Bit_Order
4131--       aspect (set by an aspect clause or attribute definition clause) that
4132--       has reversed the order of bits from the default value. When this flag
4133--       is set, a component clause must specify a set of bits entirely within
4134--       a single storage unit (Ada 95) or within a single machine scalar (see
4135--       Ada 2005 AI-133), or must occupy an integral number of storage units.
4136
4137--    Reverse_Storage_Order (Flag93) [base type only]
4138--       Defined in all record and array type entities. Set if entity has a
4139--       Scalar_Storage_Order aspect (set by an aspect clause or attribute
4140--       definition clause) that has reversed the order of storage elements
4141--       from the default value. When this flag is set for a record type,
4142--       the Bit_Order aspect must be set to the same value (either explicitly
4143--       or as the target default value).
4144
4145--    Rewritten_For_C (Flag287)
4146--       Defined on functions that return a constrained array type, when
4147--       Modify_Tree_For_C is set. Indicates that a procedure with an extra
4148--       out parameter has been created for it, and calls must be rewritten as
4149--       calls to the new procedure.
4150
4151--    RM_Size (Uint13)
4152--       Defined in all type and subtype entities. Contains the value of
4153--       type'Size as defined in the RM. See also the Esize field and
4154--       and the description on "Handling of Type'Size Values". A value
4155--       of zero in this field for a non-discrete type means that
4156--       the front end has not yet determined the size value. For the
4157--       case of a discrete type, this field is always set by the front
4158--       end and zero is a legitimate value for a type with one value.
4159
4160--    Root_Type (synthesized)
4161--       Applies to all type entities. For class-wide types, returns the root
4162--       type of the class covered by the CW type, otherwise returns the
4163--       ultimate derivation ancestor of the given type. This function
4164--       preserves the view, i.e. the Root_Type of a partial view is the
4165--       partial view of the ultimate ancestor, the Root_Type of a full view
4166--       is the full view of the ultimate ancestor. Note that this function
4167--       does not correspond exactly to the use of root type in the RM, since
4168--       in the RM root type applies to a class of types, not to a type.
4169
4170--    Scalar_Range (Node20)
4171--       Defined in all scalar types (including modular types, where the
4172--       bounds are 0 .. modulus - 1). References a node in the tree that
4173--       contains the bounds for the range. Note that this information
4174--       could be obtained by rummaging around the tree, but it is more
4175--       convenient to have it immediately at hand in the entity. The
4176--       contents of Scalar_Range can either be an N_Subtype_Indication
4177--       node (with a constraint), or a Range node, but not a simple
4178--       subtype reference (a subtype is converted into a range).
4179
4180--    Scale_Value (Uint16)
4181--       Defined in decimal fixed-point types and subtypes. Contains the scale
4182--       for the type (i.e. the value of type'Scale = the number of decimal
4183--       digits after the decimal point).
4184
4185--    Scope (Node3)
4186--       Defined in all entities. Points to the entity for the scope (block,
4187--       loop, subprogram, package etc.) in which the entity is declared.
4188--       Since this field is in the base part of the entity node, the access
4189--       routines for this field are in Sinfo. Note that for a child unit,
4190--       the Scope will be the parent package, and for a root library unit,
4191--       the Scope will be Standard.
4192
4193--    Scope_Depth (synthesized)
4194--       Applies to program units, blocks, concurrent types and entries, and
4195--       also to record types, i.e. to any entity that can appear on the scope
4196--       stack. Yields the scope depth value, which for those entities other
4197--       than records is simply the scope depth value, for record entities, it
4198--       is the Scope_Depth of the record scope.
4199
4200--    Scope_Depth_Value (Uint22)
4201--       Defined in program units, blocks, concurrent types, and entries.
4202--       Indicates the number of scopes that statically enclose the declaration
4203--       of the unit or type. Library units have a depth of zero. Note that
4204--       record types can act as scopes but do NOT have this field set (see
4205--       Scope_Depth above).
4206
4207--    Scope_Depth_Set (synthesized)
4208--       Applies to a special predicate function that returns a Boolean value
4209--       indicating whether or not the Scope_Depth field has been set. It is
4210--       needed, since returns an invalid value in this case.
4211
4212--    Sec_Stack_Needed_For_Return (Flag167)
4213--       Defined in scope entities (blocks, entries, entry families, functions,
4214--       and procedures). Set to True when secondary stack is used to hold the
4215--       returned value of a function and thus should not be released on scope
4216--       exit.
4217
4218--    Shadow_Entities (List14)
4219--       Defined in package and generic package entities. Points to a list
4220--       of entities that correspond to private types. For each private type
4221--       a shadow entity is created that holds a copy of the private view.
4222--       In regions of the program where the full views of these private
4223--       entities are visible, the full view is copied into the entity that
4224--       is normally used to hold the private view, but the shadow entity
4225--       copy is unchanged. The shadow entities are then used to restore the
4226--       original private views at the end of the region. This list is a
4227--       standard format list (i.e. First (Shadow_Entities) is the first
4228--       entry and subsequent entries are obtained using Next.
4229
4230--    Shared_Var_Procs_Instance (Node22)
4231--       Defined in variables. Set non-Empty only if Is_Shared_Passive is
4232--       set, in which case this is the entity for the associated instance of
4233--       System.Shared_Storage.Shared_Var_Procs. See Exp_Smem for full details.
4234
4235--    Size_Check_Code (Node19)
4236--       Defined in constants and variables. Normally Empty. Set if code is
4237--       generated to check the size of the object. This field is used to
4238--       suppress this code if a subsequent address clause is encountered.
4239
4240--    Size_Clause (synthesized)
4241--       Applies to all entities. If a size clause is present in the rep
4242--       item chain for an entity then the attribute definition clause node
4243--       for the size clause is returned. Otherwise Size_Clause returns Empty
4244--       if no item is present. Usually this is only meaningful if the flag
4245--       Has_Size_Clause is set. This is because when the representation item
4246--       chain is copied for a derived type, it can inherit a size clause that
4247--       is not applicable to the entity.
4248
4249--    Size_Depends_On_Discriminant (Flag177)
4250--       Defined in all entities for types and subtypes. Indicates that the
4251--       size of the type depends on the value of one or more discriminants.
4252--       Currently, this flag is only set for arrays which have one or more
4253--       bounds depending on a discriminant value.
4254
4255--    Size_Known_At_Compile_Time (Flag92)
4256--       Defined in all entities for types and subtypes. Indicates that the
4257--       size of objects of the type is known at compile time. This flag is
4258--       used to optimize some generated code sequences, and also to enable
4259--       some error checks (e.g. disallowing component clauses on variable
4260--       length objects). It is set conservatively (i.e. if it is True, the
4261--       size is certainly known at compile time, if it is False, then the
4262--       size may or may not be known at compile time, but the code will
4263--       assume that it is not known). Note that the value may be known only
4264--       to the back end, so the fact that this flag is set does not mean that
4265--       the front end can access the value.
4266
4267--    Small_Value (Ureal21)
4268--       Defined in fixed point types. Points to the universal real for the
4269--       Small of the type, either as given in a representation clause, or
4270--       as computed (as a power of two) by the compiler.
4271
4272--    SPARK_Aux_Pragma (Node41)
4273--       Present in concurrent type, [generic] package spec and package body
4274--       entities. For concurrent types and package specs it refers to the
4275--       SPARK mode setting for the private part. This field points to the
4276--       N_Pragma node that either appears in the private part or is inherited
4277--       from the enclosing context. For package bodies, it refers to the SPARK
4278--       mode of the elaboration sequence after the BEGIN. The fields points to
4279--       the N_Pragma node that either appears in the statement sequence or is
4280--       inherited from the enclosing context. In all cases, if the pragma is
4281--       inherited, then the SPARK_Aux_Pragma_Inherited flag is set.
4282
4283--    SPARK_Aux_Pragma_Inherited (Flag266)
4284--       Present in concurrent type, [generic] package spec and package body
4285--       entities. Set if the SPARK_Aux_Pragma field points to a pragma that is
4286--       inherited, rather than a local one.
4287
4288--    SPARK_Pragma (Node40)
4289--       Present in the following entities:
4290--
4291--         abstract states
4292--         constants
4293--         entries
4294--         operators
4295--         [generic] packages
4296--         package bodies
4297--         [generic] subprograms
4298--         subprogram bodies
4299--         variables
4300--         types
4301--
4302--       Points to the N_Pragma node that applies to the initial declaration or
4303--       body. This is either set by a local SPARK_Mode pragma or is inherited
4304--       from the context (from an outer scope for the spec case or from the
4305--       spec for the body case). In the case where the attribute is inherited,
4306--       flag SPARK_Pragma_Inherited is set. Empty if no SPARK_Mode pragma is
4307--       applicable.
4308
4309--    SPARK_Pragma_Inherited (Flag265)
4310--       Present in the following entities:
4311--
4312--         abstract states
4313--         constants
4314--         entries
4315--         operators
4316--         [generic] packages
4317--         package bodies
4318--         [generic] subprograms
4319--         subprogram bodies
4320--         variables
4321--         types
4322--
4323--       Set if the SPARK_Pragma attribute points to an inherited pragma rather
4324--       than a local one.
4325
4326--    Spec_Entity (Node19)
4327--       Defined in package body entities. Points to corresponding package
4328--       spec entity. Also defined in subprogram body parameters in the
4329--       case where there is a separate spec, where this field references
4330--       the corresponding parameter entities in the spec.
4331
4332--    SSO_Set_High_By_Default (Flag273) [base type only]
4333--       Defined for record and array types. Set in the base type if a pragma
4334--       Default_Scalar_Storage_Order (High_Order_First) was active at the time
4335--       the record or array was declared and therefore applies to it.
4336
4337--    SSO_Set_Low_By_Default (Flag272) [base type only]
4338--       Defined for record and array types. Set in the base type if a pragma
4339--       Default_Scalar_Storage_Order (High_Order_First) was active at the time
4340--       the record or array was declared and therefore applies to it.
4341
4342--    Static_Discrete_Predicate (List25)
4343--       Defined in discrete types/subtypes with static predicates (with the
4344--       two flags Has_Predicates and Has_Static_Predicate set). Set if the
4345--       type/subtype has a static predicate. Points to a list of expression
4346--       and N_Range nodes that represent the predicate in canonical form. The
4347--       canonical form has entries sorted in ascending order, with duplicates
4348--       eliminated, and adjacent ranges coalesced, so that there is always a
4349--       gap in the values between successive entries. The entries in this list
4350--       are fully analyzed and typed with the base type of the subtype. Note
4351--       that all entries are static and have values within the subtype range.
4352
4353--    Static_Elaboration_Desired (Flag77)
4354--       Defined in library-level packages. Set by the pragma of the same
4355--       name, to indicate that static initialization must be attempted for
4356--       all types declared in the package, and that a warning must be emitted
4357--       for those types to which static initialization is not available.
4358
4359--    Static_Initialization (Node30)
4360--       Defined in initialization procedures for types whose objects can be
4361--       initialized statically. The value of this attribute is a positional
4362--       aggregate whose components are compile-time static values. Used
4363--       when available in object declarations to eliminate the call to the
4364--       initialization procedure, and to minimize elaboration code. Note:
4365--       This attribute uses the same field as Overridden_Operation, which is
4366--       irrelevant in init_procs.
4367
4368--    Static_Real_Or_String_Predicate (Node25)
4369--       Defined in real types/subtypes with static predicates (with the two
4370--       flags Has_Predicates and Has_Static_Predicate set). Set if the type
4371--       or subtype has a static predicate. Points to the return expression
4372--       of the predicate function. This is the original expression given as
4373--       the predicate except that occurrences of the type are replaced by
4374--       occurrences of the formal parameter of the predicate function (note
4375--       that the spec of this function including this formal parameter name
4376--       is available from the Subprograms_For_Type field; it can be accessed
4377--       as Predicate_Function (typ)). Also, in the case where a predicate is
4378--       inherited, the expression is of the form:
4379--
4380--         xxxPredicate (typ2 (ent)) AND THEN expression
4381--
4382--       where typ2 is the type from which the predicate is inherited, ent is
4383--       the entity for the current predicate function, and xxxPredicate is the
4384--       inherited predicate (from typ2). Finally for a predicate that inherits
4385--       from another predicate but does not add a predicate of its own, the
4386--       expression may consist of the above xxxPredicate call on its own.
4387
4388--    Status_Flag_Or_Transient_Decl (Node15)
4389--       Defined in constant, loop, and variable entities. Applies to objects
4390--       that require special treatment by the finalization machinery, such as
4391--       extended return results, IF and CASE expression results, and objects
4392--       inside N_Expression_With_Actions nodes. The attribute contains the
4393--       entity of a flag which specifies particular behavior over a region of
4394--       code or the declaration of a "hook" object.
4395--       In which case is it a flag, or a hook object???
4396
4397--    Storage_Size_Variable (Node26) [implementation base type only]
4398--       Defined in access types and task type entities. This flag is set
4399--       if a valid and effective pragma Storage_Size applies to the base
4400--       type. Points to the entity for a variable that is created to
4401--       hold the value given in a Storage_Size pragma for an access
4402--       collection or a task type. Note that in the access type case,
4403--       this field is defined only in the root type (since derived types
4404--       share the same storage pool).
4405
4406--    Stored_Constraint (Elist23)
4407--       Defined in entities that can have discriminants (concurrent types
4408--       subtypes, record types and subtypes, private types and subtypes,
4409--       limited private types and subtypes and incomplete types). Points
4410--       to an element list containing the expressions for each of the
4411--       stored discriminants for the record (sub)type.
4412
4413--    Stores_Attribute_Old_Prefix (Flag270)
4414--       Defined in constants. Set when the constant has been generated to save
4415--       the value of attribute 'Old's prefix.
4416
4417--    Strict_Alignment (Flag145) [implementation base type only]
4418--       Defined in all type entities. Indicates that some containing part
4419--       is either aliased or tagged. This prohibits packing the object
4420--       tighter than its natural size and alignment.
4421
4422--    String_Literal_Length (Uint16)
4423--       Defined in string literal subtypes (which are created to correspond
4424--       to string literals in the program). Contains the length of the string
4425--       literal.
4426
4427--    String_Literal_Low_Bound (Node18)
4428--       Defined in string literal subtypes (which are created to correspond
4429--       to string literals in the program). Contains an expression whose
4430--       value represents the low bound of the literal. This is a copy of
4431--       the low bound of the applicable index constraint if there is one,
4432--       or a copy of the low bound of the index base type if not.
4433
4434--    Subprograms_For_Type (Elist29)
4435--       Defined in all types. The list may contain the entities of the default
4436--       initial condition procedure, invariant procedure, and the two versions
4437--       of the predicate function.
4438--
4439--       Historical note: This attribute used to be a direct linked list of
4440--       entities rather than an Elist. The Elist allows greater flexibility
4441--       in inheritance of subprograms between views of the same type.
4442
4443--    Subps_Index (Uint24)
4444--       Present in subprogram entries. Set if the subprogram contains nested
4445--       subprograms, or is a subprogram nested within such a subprogram. Holds
4446--       the index in the Exp_Unst.Subps table for the subprogram. Note that
4447--       for the outer level subprogram, this is the starting index in the Subp
4448--       table for the entries for this subprogram.
4449
4450--    Suppress_Elaboration_Warnings (Flag303)
4451--       NOTE: this flag is relevant only for the legacy ABE mechanism and
4452--       should not be used outside of that context.
4453--
4454--       Defined in all entities, can be set only for subprogram entities and
4455--       for variables. If this flag is set then Sem_Elab will not generate
4456--       elaboration warnings for the subprogram or variable. Suppression of
4457--       such warnings is automatic for subprograms for which elaboration
4458--       checks are suppressed (without the need to set this flag), but the
4459--       flag is also set for various internal entities (such as init procs)
4460--       which are known not to generate any possible access before elaboration
4461--       and it is set on variables when a warning is given to avoid multiple
4462--       elaboration warnings for the same variable.
4463
4464--    Suppress_Initialization (Flag105)
4465--       Defined in all variable, type and subtype entities. If set for a base
4466--       type, then the generation of initialization procedures is suppressed
4467--       for the type. Any other implicit initialiation (e.g. from the use of
4468--       pragma Initialize_Scalars) is also suppressed if this flag is set for
4469--       either the subtype in question, or for the base type. For variables,
4470--       this flag suppresses all implicit initialization for the object, even
4471--       if the type would normally require initialization. Set by use of
4472--       pragma Suppress_Initialization and also for internal entities where
4473--       we know that no initialization is required. For example, enumeration
4474--       image table entities set it.
4475
4476--    Suppress_Style_Checks (Flag165)
4477--       Defined in all entities. Suppresses any style checks specifically
4478--       associated with the given entity if set.
4479
4480--    Suppress_Value_Tracking_On_Call (Flag217)
4481--       Defined in all entities. Set in a scope entity if value tracking is to
4482--       be suppressed on any call within the scope. Used when an access to a
4483--       local subprogram is computed, to deal with the possibility that this
4484--       value may be passed around, and if used, may clobber a local variable.
4485
4486--    Task_Body_Procedure (Node25)
4487--       Defined in task types and subtypes. Points to the entity for the task
4488--       task body procedure (as further described in Exp_Ch9, task bodies are
4489--       expanded into procedures). A convenient function to retrieve this
4490--       field is Sem_Util.Get_Task_Body_Procedure.
4491--
4492--       The last sentence is odd??? Why not have Task_Body_Procedure go to the
4493--       Underlying_Type of the Root_Type???
4494
4495--    Thunk_Entity (Node31)
4496--       Defined in functions and procedures which have been classified as
4497--       Is_Thunk. Set to the target entity called by the thunk.
4498
4499--    Treat_As_Volatile (Flag41)
4500--       Defined in all type entities, and also in constants, components and
4501--       variables. Set if this entity is to be treated as volatile for code
4502--       generation purposes. Always set if Is_Volatile is set, but can also
4503--       be set as a result of situations (such as address overlays) where
4504--       the front end wishes to force volatile handling to inhibit aliasing
4505--       optimization which might be legally ok, but is undesirable. Note
4506--       that the backend always tests this flag rather than Is_Volatile.
4507--       The front end tests Is_Volatile if it is concerned with legality
4508--       checks associated with declared volatile variables, but if the test
4509--       is for the purposes of suppressing optimizations, then the front
4510--       end should test Treat_As_Volatile rather than Is_Volatile.
4511--
4512--       Note: before testing Treat_As_Volatile, consider whether it would
4513--       be more appropriate to use Exp_Util.Is_Volatile_Reference instead,
4514--       which catches more cases of volatile references.
4515
4516--    Type_High_Bound (synthesized)
4517--       Applies to scalar types. Returns the tree node (Node_Id) that contains
4518--       the high bound of a scalar type. The returned value is literal for a
4519--       base type, but may be an expression in the case of scalar type with
4520--       dynamic bounds. Note that in the case of a fixed point type, the high
4521--       bound is in units of small, and is an integer.
4522
4523--    Type_Low_Bound (synthesized)
4524--       Applies to scalar types. Returns the tree node (Node_Id) that contains
4525--       the low bound of a scalar type. The returned value is literal for a
4526--       base type, but may be an expression in the case of scalar type with
4527--       dynamic bounds. Note that in the case of a fixed point type, the low
4528--       bound is in units of small, and is an integer.
4529
4530--    Underlying_Full_View (Node19)
4531--       Defined in private subtypes that are the completion of other private
4532--       types, or in private types that are derived from private subtypes. If
4533--       the full view of a private type T is derived from another private type
4534--       with discriminants Td, the full view of T is also private, and there
4535--       is no way to attach to it a further full view that would convey the
4536--       structure of T to the backend. The Underlying_Full_View is an
4537--       attribute of the full view that is a subtype of Td with the same
4538--       constraint as the declaration for T. The declaration for this subtype
4539--       is built at the point of the declaration of T, either as completion,
4540--       or as a subtype declaration where the base type is private and has a
4541--       private completion. If Td is already constrained, then its full view
4542--       can serve directly as the full view of T.
4543
4544--    Underlying_Record_View (Node28)
4545--       Defined in record types. Set for record types that are extensions of
4546--       types with unknown discriminants, and also set for internally built
4547--       underlying record views to reference its original record type. Record
4548--       types that are extensions of types with unknown discriminants do not
4549--       have a completion, but they cannot be used without having some
4550--       discriminated view at hand. This view is a record type with the same
4551--       structure, whose parent type is the full view of the parent in the
4552--       original type extension.
4553
4554--    Underlying_Type (synthesized)
4555--       Applies to all entities. This is the identity function except in the
4556--       case where it is applied to an incomplete or private type, in which
4557--       case it is the underlying type of the type declared by the completion,
4558--       or Empty if the completion has not yet been encountered and analyzed.
4559--
4560--       Note: the reason this attribute applies to all entities, and not just
4561--       types, is to legitimize code where Underlying_Type is applied to an
4562--       entity which may or may not be a type, with the intent that if it is a
4563--       type, its underlying type is taken.
4564--
4565--       Note also that the value of this attribute is interesting only after
4566--       the full view of the parent type has been processed. If the parent
4567--       type is declared in an enclosing package, the attribute will be non-
4568--       trivial only after the full view of the type has been analyzed.
4569
4570--    Universal_Aliasing (Flag216) [implementation base type only]
4571--       Defined in all type entities. Set to direct the back-end to avoid
4572--       any optimizations based on type-based alias analysis for this type.
4573--       Indicates that objects of this type can alias objects of any other
4574--       types, which guarantees that any objects can be referenced through
4575--       access types designating this type safely, whatever the actual type
4576--       of these objects. In other words, the effect is as though access
4577--       types designating this type were subject to No_Strict_Aliasing.
4578
4579--    Unset_Reference (Node16)
4580--       Defined in variables and out parameters. This is normally Empty. It
4581--       is set to point to an identifier that represents a reference to the
4582--       entity before any value has been set. Only the first such reference
4583--       is identified. This field is used to generate a warning message if
4584--       necessary (see Sem_Warn.Check_Unset_Reference).
4585
4586--    Used_As_Generic_Actual (Flag222)
4587--       Defined in all entities, set if the entity is used as an argument to
4588--       a generic instantiation. Used to tune certain warning messages, and
4589--       in checking type conformance within an instantiation that involves
4590--       incomplete formal and actual types.
4591
4592--    Uses_Lock_Free (Flag188)
4593--       Defined in protected type entities. Set to True when the Lock Free
4594--       implementation is used for the protected type. This implementation is
4595--       based on atomic transactions and doesn't require anymore the use of
4596--       Protection object (see System.Tasking.Protected_Objects).
4597
4598--    Uses_Sec_Stack (Flag95)
4599--       Defined in scope entities (blocks, entries, entry families, functions,
4600--       loops, and procedures). Set to True when the secondary stack is used
4601--       in this scope and must be released on exit unless flag
4602--       Sec_Stack_Needed_For_Return is set.
4603
4604--    Validated_Object (Node36)
4605--       Defined in variables. Contains the object whose value is captured by
4606--       the variable for validity check purposes.
4607
4608--    Warnings_Off (Flag96)
4609--       Defined in all entities. Set if a pragma Warnings (Off, entity-name)
4610--       is used to suppress warnings for a given entity. It is also used by
4611--       the compiler in some situations to kill spurious warnings. Note that
4612--       clients should generally not test this flag directly, but instead
4613--       use function Has_Warnings_Off.
4614
4615--    Warnings_Off_Used (Flag236)
4616--       Defined in all entities. Can only be set if Warnings_Off is set. If
4617--       set indicates that a warning was suppressed by the Warnings_Off flag,
4618--       and Unmodified/Unreferenced would not have suppressed the warning.
4619
4620--    Warnings_Off_Used_Unmodified (Flag237)
4621--       Defined in all entities. Can only be set if Warnings_Off is set and
4622--       Has_Pragma_Unmodified is not set. If set indicates that a warning was
4623--       suppressed by the Warnings_Off status but that pragma Unmodified
4624--       would also have suppressed the warning.
4625
4626--    Warnings_Off_Used_Unreferenced (Flag238)
4627--       Defined in all entities. Can only be set if Warnings_Off is set and
4628--       Has_Pragma_Unreferenced is not set. If set indicates that a warning
4629--       was suppressed by the Warnings_Off status but that pragma Unreferenced
4630--       would also have suppressed the warning.
4631
4632--    Was_Hidden (Flag196)
4633--       Defined in all entities. Used to save the value of the Is_Hidden
4634--       attribute when the limited-view is installed (Ada 2005: AI-217).
4635
4636--    Wrapped_Entity (Node27)
4637--       Defined in functions and procedures which have been classified as
4638--       Is_Primitive_Wrapper. Set to the entity being wrapper.
4639
4640---------------------------
4641-- Renaming and Aliasing --
4642---------------------------
4643
4644--  Several entity attributes relate to renaming constructs, and to the use of
4645--  different names to refer to the same entity. The following is a summary of
4646--  these constructs and their prefered uses.
4647
4648--  There are three related attributes:
4649
4650--    Renamed_Entity
4651--    Renamed_Object
4652--    Alias
4653
4654--  They all overlap because they are supposed to apply to different entity
4655--  kinds. They are semantically related, and have the following intended uses:
4656
4657--  a) Renamed_Entity appplies to entities in renaming declarations that rename
4658--  an entity, so the value of the attribute IS an entity. This applies to
4659--  generic renamings, package renamings, exception renamings, and subprograms
4660--  renamings that rename a subprogram (rather than an attribute, an entry, a
4661--  protected operation, etc).
4662
4663--  b) Alias applies to overloadable entities, and the value is an overloadable
4664--  entity. So this is a subset of the previous one. We use the term Alias to
4665--  cover both renamings and inherited operations, because both cases are
4666--  handled in the same way when expanding a call. Namely the Alias of a given
4667--  subprogram is the subprogram that will actually be called.
4668
4669--  Both a) and b) are set transitively, so that in fact it is not necessary to
4670--  traverse chains of renamings when looking for the original entity: it's
4671--  there in one step (this is done when analyzing renaming declarations other
4672--  than object renamings in sem_ch8).
4673
4674--  c) Renamed_Object applies to constants and variables. Given that the name
4675--  in an object renaming declaration is not necessarily an entity name, the
4676--  value of the attribute is the tree for that name, eg AR (1).Comp. The case
4677--  when that name is in fact an entity is not handled specially. This is why
4678--  in a few cases we need to use a loop to trace a chain of object renamings
4679--  where all of them happen to be entities. So:
4680
4681--    X : integer;
4682--    Y : integer renames X;   -- renamed object is the identifier X
4683--    Z : integer renames Y;   -- renamed object is the identifier Y
4684
4685--  The front-end does not store explicitly the fact that Z renames X.
4686
4687--------------------------------------
4688-- Delayed Freezing and Elaboration --
4689--------------------------------------
4690
4691--  The flag Has_Delayed_Freeze indicates that an entity carries an explicit
4692--  freeze node, which appears later in the expanded tree.
4693
4694--  a) The flag is used by the front-end to trigger expansion actions
4695--  which include the generation of that freeze node. Typically this happens at
4696--  the end of the current compilation unit, or before the first subprogram
4697--  body is encountered in the current unit. See files freeze and exp_ch13 for
4698--  details on the actions triggered by a freeze node, which include the
4699--  construction of initialization procedures and dispatch tables.
4700
4701--  b) The flag is used by the backend to defer elaboration of the entity until
4702--  its freeze node is seen. In the absence of an explicit freeze node, an
4703--  entity is frozen (and elaborated) at the point of declaration.
4704
4705--  For object declarations, the flag is set when an address clause for the
4706--  object is encountered. Legality checks on the address expression only
4707--  take place at the freeze point of the object.
4708
4709--  Most types have an explicit freeze node, because they cannot be elaborated
4710--  until all representation and operational items that apply to them have been
4711--  analyzed. Private types and incomplete types have the flag set as well, as
4712--  do task and protected types.
4713
4714--  Implicit base types created for type derivations, as well as classwide
4715--  types created for all tagged types, have the flag set.
4716
4717--  If a subprogram has an access parameter whose designated type is incomplete
4718--  the subprogram has the flag set.
4719
4720------------------
4721-- Access Kinds --
4722------------------
4723
4724--  The following entity kinds are introduced by the corresponding type
4725--  definitions:
4726
4727--    E_Access_Type,
4728--    E_General_Access_Type,
4729--    E_Access_Subprogram_Type,
4730--    E_Anonymous_Access_Subprogram_Type,
4731--    E_Access_Protected_Subprogram_Type,
4732--    E_Anonymous_Access_Protected_Subprogram_Type
4733--    E_Anonymous_Access_Type.
4734
4735--  E_Access_Subtype is for an access subtype created by a subtype
4736--  declaration.
4737
4738--  In addition, we define the kind E_Allocator_Type to label allocators.
4739--  This is because special resolution rules apply to this construct.
4740--  Eventually the constructs are labeled with the access type imposed by
4741--  the context. The backend should never see types with this Ekind.
4742
4743--  Similarly, the type E_Access_Attribute_Type is used as the initial kind
4744--  associated with an access attribute. After resolution a specific access
4745--  type will be established as determined by the context.
4746
4747--  Finally, the type Any_Access is used to label -null- during type
4748--  resolution. Any_Access is also replaced by the context type after
4749--  resolution.
4750
4751--------------------------------
4752-- Classification of Entities --
4753--------------------------------
4754
4755--  The classification of program entities which follows is a refinement of
4756--  the list given in RM 3.1(1). E.g., separate entities denote subtypes of
4757--  different type classes. Ada 95 entities include class wide types,
4758--  protected types, subprogram types, generalized access types, generic
4759--  formal derived types and generic formal packages.
4760
4761--  The order chosen for these kinds allows us to classify related entities
4762--  so that they are contiguous. As a result, they do not appear in the
4763--  exact same order as their order of first appearance in the LRM (For
4764--  example, private types are listed before packages). The contiguity
4765--  allows us to define useful subtypes (see below) such as type entities,
4766--  overloaded entities, etc.
4767
4768--  Each entity (explicitly or implicitly declared) has a kind, which is
4769--  a value of the following type:
4770
4771   type Entity_Kind is (
4772
4773      E_Void,
4774      --  The initial Ekind value for a newly created entity. Also used as the
4775      --  Ekind for Standard_Void_Type, a type entity in Standard used as a
4776      --  dummy type for the return type of a procedure (the reason we create
4777      --  this type is to share the circuits for performing overload resolution
4778      --  on calls).
4779
4780      -------------
4781      -- Objects --
4782      -------------
4783
4784      E_Component,
4785      --  Components of a record declaration, private declarations of
4786      --  protected objects.
4787
4788      E_Constant,
4789      --  Constants created by an object declaration with a constant keyword
4790
4791      E_Discriminant,
4792      --  A discriminant, created by the use of a discriminant in a type
4793      --  declaration.
4794
4795      E_Loop_Parameter,
4796      --  A loop parameter created by a for loop
4797
4798      E_Variable,
4799      --  Variables created by an object declaration with no constant keyword
4800
4801      ------------------------
4802      -- Parameter Entities --
4803      ------------------------
4804
4805      --  Parameters are also objects
4806
4807      E_Out_Parameter,
4808      --  An out parameter of a subprogram or entry
4809
4810      E_In_Out_Parameter,
4811      --  An in-out parameter of a subprogram or entry
4812
4813      E_In_Parameter,
4814      --  An in parameter of a subprogram or entry
4815
4816      --------------------------------
4817      -- Generic Parameter Entities --
4818      --------------------------------
4819
4820      --  Generic parameters are also objects
4821
4822      E_Generic_In_Out_Parameter,
4823      --  A generic in out parameter, created by the use of a generic in out
4824      --  parameter in a generic declaration.
4825
4826      E_Generic_In_Parameter,
4827      --  A generic in parameter, created by the use of a generic in
4828      --  parameter in a generic declaration.
4829
4830      -------------------
4831      -- Named Numbers --
4832      -------------------
4833
4834      E_Named_Integer,
4835      --  Named numbers created by a number declaration with an integer value
4836
4837      E_Named_Real,
4838      --  Named numbers created by a number declaration with a real value
4839
4840      -----------------------
4841      -- Enumeration Types --
4842      -----------------------
4843
4844      E_Enumeration_Type,
4845      --  Enumeration types, created by an enumeration type declaration
4846
4847      E_Enumeration_Subtype,
4848      --  Enumeration subtypes, created by an explicit or implicit subtype
4849      --  declaration applied to an enumeration type or subtype.
4850
4851      -------------------
4852      -- Numeric Types --
4853      -------------------
4854
4855      E_Signed_Integer_Type,
4856      --  Signed integer type, used for the anonymous base type of the
4857      --  integer subtype created by an integer type declaration.
4858
4859      E_Signed_Integer_Subtype,
4860      --  Signed integer subtype, created by either an integer subtype or
4861      --  integer type declaration (in the latter case an integer type is
4862      --  created for the base type, and this is the first named subtype).
4863
4864      E_Modular_Integer_Type,
4865      --  Modular integer type, used for the anonymous base type of the
4866      --  integer subtype created by a modular integer type declaration.
4867
4868      E_Modular_Integer_Subtype,
4869      --  Modular integer subtype, created by either an modular subtype
4870      --  or modular type declaration (in the latter case a modular type
4871      --  is created for the base type, and this is the first named subtype).
4872
4873      E_Ordinary_Fixed_Point_Type,
4874      --  Ordinary fixed type, used for the anonymous base type of the fixed
4875      --  subtype created by an ordinary fixed point type declaration.
4876
4877      E_Ordinary_Fixed_Point_Subtype,
4878      --  Ordinary fixed point subtype, created by either an ordinary fixed
4879      --  point subtype or ordinary fixed point type declaration (in the
4880      --  latter case a fixed point type is created for the base type, and
4881      --  this is the first named subtype).
4882
4883      E_Decimal_Fixed_Point_Type,
4884      --  Decimal fixed type, used for the anonymous base type of the decimal
4885      --  fixed subtype created by an ordinary fixed point type declaration.
4886
4887      E_Decimal_Fixed_Point_Subtype,
4888      --  Decimal fixed point subtype, created by either a decimal fixed point
4889      --  subtype or decimal fixed point type declaration (in the latter case
4890      --  a fixed point type is created for the base type, and this is the
4891      --  first named subtype).
4892
4893      E_Floating_Point_Type,
4894      --  Floating point type, used for the anonymous base type of the
4895      --  floating point subtype created by a floating point type declaration.
4896
4897      E_Floating_Point_Subtype,
4898
4899      --  Floating point subtype, created by either a floating point subtype
4900      --  or floating point type declaration (in the latter case a floating
4901      --  point type is created for the base type, and this is the first
4902      --  named subtype).
4903
4904      ------------------
4905      -- Access Types --
4906      ------------------
4907
4908      E_Access_Type,
4909      --  An access type created by an access type declaration with no all
4910      --  keyword present. Note that the predefined type Any_Access, which
4911      --  has E_Access_Type Ekind, is used to label NULL in the upwards pass
4912      --  of type analysis, to be replaced by the true access type in the
4913      --  downwards resolution pass.
4914
4915      E_Access_Subtype,
4916      --  An access subtype created by a subtype declaration for any access
4917      --  type (whether or not it is a general access type).
4918
4919      E_Access_Attribute_Type,
4920      --  An access type created for an access attribute (one of 'Access,
4921      --  'Unrestricted_Access, or Unchecked_Access).
4922
4923      E_Allocator_Type,
4924      --  A special internal type used to label allocators and references to
4925      --  objects using 'Reference. This is needed because special resolution
4926      --  rules apply to these constructs. On the resolution pass, this type
4927      --  is almost always replaced by the actual access type, but if the
4928      --  context does not provide one, the backend will see Allocator_Type
4929      --  itself (which will already have been frozen).
4930
4931      E_General_Access_Type,
4932      --  An access type created by an access type declaration with the all
4933      --  keyword present.
4934
4935      E_Access_Subprogram_Type,
4936      --  An access-to-subprogram type, created by an access-to-subprogram
4937      --  declaration.
4938
4939      E_Access_Protected_Subprogram_Type,
4940      --  An access to a protected subprogram, created by the corresponding
4941      --  declaration. Values of such a type denote both a protected object
4942      --  and a protected operation within, and have different compile-time
4943      --  and run-time properties than other access-to-subprogram values.
4944
4945      E_Anonymous_Access_Protected_Subprogram_Type,
4946      --  An anonymous access-to-protected-subprogram type, created by an
4947      --  access-to-subprogram declaration.
4948
4949      E_Anonymous_Access_Subprogram_Type,
4950      --  An anonymous access-to-subprogram type, created by an access-to-
4951      --  subprogram declaration, or generated for a current instance of
4952      --  a type name appearing within a component definition that has an
4953      --  anonymous access-to-subprogram type.
4954
4955      E_Anonymous_Access_Type,
4956      --  An anonymous access type created by an access parameter or access
4957      --  discriminant.
4958
4959      ---------------------
4960      -- Composite Types --
4961      ---------------------
4962
4963      E_Array_Type,
4964      --  An array type created by an array type declaration. Includes all
4965      --  cases of arrays, except for string types.
4966
4967      E_Array_Subtype,
4968      --  An array subtype, created by an explicit array subtype declaration,
4969      --  or the use of an anonymous array subtype.
4970
4971      E_String_Literal_Subtype,
4972      --  A special string subtype, used only to describe the type of a string
4973      --  literal (will always be one dimensional, with literal bounds).
4974
4975      E_Class_Wide_Type,
4976      --  A class wide type, created by any tagged type declaration (i.e. if
4977      --  a tagged type is declared, the corresponding class type is always
4978      --  created, using this Ekind value).
4979
4980      E_Class_Wide_Subtype,
4981      --  A subtype of a class wide type, created by a subtype declaration
4982      --  used to declare a subtype of a class type.
4983
4984      E_Record_Type,
4985      --  A record type, created by a record type declaration
4986
4987      E_Record_Subtype,
4988      --  A record subtype, created by a record subtype declaration
4989
4990      E_Record_Type_With_Private,
4991      --  Used for types defined by a private extension declaration,
4992      --  and for tagged private types. Includes the fields for both
4993      --  private types and for record types (with the sole exception of
4994      --  Corresponding_Concurrent_Type which is obviously not needed). This
4995      --  entity is considered to be both a record type and a private type.
4996
4997      E_Record_Subtype_With_Private,
4998      --  A subtype of a type defined by a private extension declaration
4999
5000      E_Private_Type,
5001      --  A private type, created by a private type declaration that has
5002      --  neither the keyword limited nor the keyword tagged.
5003
5004      E_Private_Subtype,
5005      --  A subtype of a private type, created by a subtype declaration used
5006      --  to declare a subtype of a private type.
5007
5008      E_Limited_Private_Type,
5009      --  A limited private type, created by a private type declaration that
5010      --  has the keyword limited, but not the keyword tagged.
5011
5012      E_Limited_Private_Subtype,
5013      --  A subtype of a limited private type, created by a subtype declaration
5014      --  used to declare a subtype of a limited private type.
5015
5016      E_Incomplete_Type,
5017      --  An incomplete type, created by an incomplete type declaration
5018
5019      E_Incomplete_Subtype,
5020      --  An incomplete subtype, created by a subtype declaration where the
5021      --  subtype mark denotes an incomplete type.
5022
5023      E_Task_Type,
5024      --  A task type, created by a task type declaration. An entity with this
5025      --  Ekind is also created to describe the anonymous type of a task that
5026      --  is created by a single task declaration.
5027
5028      E_Task_Subtype,
5029      --  A subtype of a task type, created by a subtype declaration used to
5030      --  declare a subtype of a task type.
5031
5032      E_Protected_Type,
5033      --  A protected type, created by a protected type declaration. An entity
5034      --  with this Ekind is also created to describe the anonymous type of
5035      --  a protected object created by a single protected declaration.
5036
5037      E_Protected_Subtype,
5038      --  A subtype of a protected type, created by a subtype declaration used
5039      --  to declare a subtype of a protected type.
5040
5041      -----------------
5042      -- Other Types --
5043      -----------------
5044
5045      E_Exception_Type,
5046      --  The type of an exception created by an exception declaration
5047
5048      E_Subprogram_Type,
5049      --  This is the designated type of an Access_To_Subprogram. Has type and
5050      --  signature like a subprogram entity, so can appear in calls, which
5051      --  are resolved like regular calls, except that such an entity is not
5052      --  overloadable.
5053
5054      ---------------------------
5055      -- Overloadable Entities --
5056      ---------------------------
5057
5058      E_Enumeration_Literal,
5059      --  An enumeration literal, created by the use of the literal in an
5060      --  enumeration type definition.
5061
5062      E_Function,
5063      --  A function, created by a function declaration or a function body
5064      --  that acts as its own declaration.
5065
5066      E_Operator,
5067      --  A predefined operator, appearing in Standard, or an implicitly
5068      --  defined concatenation operator created whenever an array is declared.
5069      --  We do not make normal derived operators explicit in the tree, but the
5070      --  concatenation operators are made explicit.
5071
5072      E_Procedure,
5073      --  A procedure, created by a procedure declaration or a procedure
5074      --  body that acts as its own declaration.
5075
5076      E_Abstract_State,
5077      --  A state abstraction. Used to designate entities introduced by aspect
5078      --  or pragma Abstract_State. The entity carries the various properties
5079      --  of the state.
5080
5081      E_Entry,
5082      --  An entry, created by an entry declaration in a task or protected
5083      --  object.
5084
5085      --------------------
5086      -- Other Entities --
5087      --------------------
5088
5089      E_Entry_Family,
5090      --  An entry family, created by an entry family declaration in a
5091      --  task or protected type definition.
5092
5093      E_Block,
5094      --  A block identifier, created by an explicit or implicit label on
5095      --  a block or declare statement.
5096
5097      E_Entry_Index_Parameter,
5098      --  An entry index parameter created by an entry index specification
5099      --  for the body of a protected entry family.
5100
5101      E_Exception,
5102      --  An exception created by an exception declaration. The exception
5103      --  itself uses E_Exception for the Ekind, the implicit type that is
5104      --  created to represent its type uses the Ekind E_Exception_Type.
5105
5106      E_Generic_Function,
5107      --  A generic function. This is the entity for a generic function
5108      --  created by a generic subprogram declaration.
5109
5110      E_Generic_Procedure,
5111      --  A generic function. This is the entity for a generic procedure
5112      --  created by a generic subprogram declaration.
5113
5114      E_Generic_Package,
5115      --  A generic package, this is the entity for a generic package created
5116      --  by a generic package declaration.
5117
5118      E_Label,
5119      --  The defining entity for a label. Note that this is created by the
5120      --  implicit label declaration, not the occurrence of the label itself,
5121      --  which is simply a direct name referring to the label.
5122
5123      E_Loop,
5124      --  A loop identifier, created by an explicit or implicit label on a
5125      --  loop statement.
5126
5127      E_Return_Statement,
5128      --  A dummy entity created for each return statement. Used to hold
5129      --  information about the return statement (what it applies to) and in
5130      --  rules checking. For example, a simple_return_statement that applies
5131      --  to an extended_return_statement cannot have an expression; this
5132      --  requires putting the E_Return_Statement entity for the
5133      --  extended_return_statement on the scope stack.
5134
5135      E_Package,
5136      --  A package, created by a package declaration
5137
5138      E_Package_Body,
5139      --  A package body. This entity serves only limited functions, since
5140      --  most semantic analysis uses the package entity (E_Package). However
5141      --  there are some attributes that are significant for the body entity.
5142      --  For example, collection of exception handlers.
5143
5144      E_Protected_Object,
5145      --  A protected object, created by an object declaration that declares
5146      --  an object of a protected type.
5147
5148      E_Protected_Body,
5149      --  A protected body. This entity serves almost no function, since all
5150      --  semantic analysis uses the protected entity (E_Protected_Type).
5151
5152      E_Task_Body,
5153      --  A task body. This entity serves almost no function, since all
5154      --  semantic analysis uses the protected entity (E_Task_Type).
5155
5156      E_Subprogram_Body
5157      --  A subprogram body. Used when a subprogram has a separate declaration
5158      --  to represent the entity for the body. This entity serves almost no
5159      --  function, since all semantic analysis uses the subprogram entity
5160      --  for the declaration (E_Function or E_Procedure).
5161   );
5162
5163   for Entity_Kind'Size use 8;
5164   --  The data structures in Atree assume this
5165
5166   --------------------------
5167   -- Subtype Declarations --
5168   --------------------------
5169
5170   --  The above entities are arranged so that they can be conveniently grouped
5171   --  into subtype ranges. Note that for each of the xxx_Kind ranges defined
5172   --  below, there is a corresponding Is_xxx (or for types, Is_xxx_Type)
5173   --  predicate which is to be used in preference to direct range tests using
5174   --  the subtype name. However, the subtype names are available for direct
5175   --  use, e.g. as choices in case statements.
5176
5177   subtype Access_Kind                 is Entity_Kind range
5178       E_Access_Type ..
5179   --  E_Access_Subtype
5180   --  E_Access_Attribute_Type
5181   --  E_Allocator_Type
5182   --  E_General_Access_Type
5183   --  E_Access_Subprogram_Type
5184   --  E_Access_Protected_Subprogram_Type
5185   --  E_Anonymous_Access_Protected_Subprogram_Type
5186   --  E_Anonymous_Access_Subprogram_Type
5187       E_Anonymous_Access_Type;
5188
5189   subtype Access_Subprogram_Kind      is Entity_Kind range
5190       E_Access_Subprogram_Type ..
5191   --  E_Access_Protected_Subprogram_Type
5192   --  E_Anonymous_Access_Protected_Subprogram_Type
5193       E_Anonymous_Access_Subprogram_Type;
5194
5195   subtype Access_Protected_Kind       is Entity_Kind range
5196      E_Access_Protected_Subprogram_Type ..
5197      E_Anonymous_Access_Protected_Subprogram_Type;
5198
5199   subtype Aggregate_Kind              is Entity_Kind range
5200       E_Array_Type ..
5201   --  E_Array_Subtype
5202   --  E_String_Literal_Subtype
5203   --  E_Class_Wide_Type
5204   --  E_Class_Wide_Subtype
5205   --  E_Record_Type
5206       E_Record_Subtype;
5207
5208   subtype Anonymous_Access_Kind       is Entity_Kind range
5209       E_Anonymous_Access_Protected_Subprogram_Type ..
5210   --  E_Anonymous_Subprogram_Type
5211       E_Anonymous_Access_Type;
5212
5213   subtype Array_Kind                  is Entity_Kind range
5214       E_Array_Type ..
5215   --  E_Array_Subtype
5216       E_String_Literal_Subtype;
5217
5218   subtype Assignable_Kind             is Entity_Kind range
5219       E_Variable ..
5220   --  E_Out_Parameter
5221       E_In_Out_Parameter;
5222
5223   subtype Class_Wide_Kind             is Entity_Kind range
5224       E_Class_Wide_Type ..
5225       E_Class_Wide_Subtype;
5226
5227   subtype Composite_Kind              is Entity_Kind range
5228       E_Array_Type ..
5229   --  E_Array_Subtype
5230   --  E_String_Literal_Subtype
5231   --  E_Class_Wide_Type
5232   --  E_Class_Wide_Subtype
5233   --  E_Record_Type
5234   --  E_Record_Subtype
5235   --  E_Record_Type_With_Private
5236   --  E_Record_Subtype_With_Private
5237   --  E_Private_Type
5238   --  E_Private_Subtype
5239   --  E_Limited_Private_Type
5240   --  E_Limited_Private_Subtype
5241   --  E_Incomplete_Type
5242   --  E_Incomplete_Subtype
5243   --  E_Task_Type
5244   --  E_Task_Subtype,
5245   --  E_Protected_Type,
5246       E_Protected_Subtype;
5247
5248   subtype Concurrent_Kind             is Entity_Kind range
5249       E_Task_Type ..
5250   --  E_Task_Subtype,
5251   --  E_Protected_Type,
5252       E_Protected_Subtype;
5253
5254   subtype Concurrent_Body_Kind        is Entity_Kind range
5255       E_Protected_Body ..
5256       E_Task_Body;
5257
5258   subtype Decimal_Fixed_Point_Kind    is Entity_Kind range
5259       E_Decimal_Fixed_Point_Type ..
5260       E_Decimal_Fixed_Point_Subtype;
5261
5262   subtype Digits_Kind                 is Entity_Kind range
5263       E_Decimal_Fixed_Point_Type ..
5264   --  E_Decimal_Fixed_Point_Subtype
5265   --  E_Floating_Point_Type
5266       E_Floating_Point_Subtype;
5267
5268   subtype Discrete_Kind               is Entity_Kind range
5269       E_Enumeration_Type ..
5270   --  E_Enumeration_Subtype
5271   --  E_Signed_Integer_Type
5272   --  E_Signed_Integer_Subtype
5273   --  E_Modular_Integer_Type
5274       E_Modular_Integer_Subtype;
5275
5276   subtype Discrete_Or_Fixed_Point_Kind is Entity_Kind range
5277       E_Enumeration_Type ..
5278   --  E_Enumeration_Subtype
5279   --  E_Signed_Integer_Type
5280   --  E_Signed_Integer_Subtype
5281   --  E_Modular_Integer_Type
5282   --  E_Modular_Integer_Subtype
5283   --  E_Ordinary_Fixed_Point_Type
5284   --  E_Ordinary_Fixed_Point_Subtype
5285   --  E_Decimal_Fixed_Point_Type
5286       E_Decimal_Fixed_Point_Subtype;
5287
5288   subtype Elementary_Kind             is Entity_Kind range
5289       E_Enumeration_Type ..
5290   --  E_Enumeration_Subtype
5291   --  E_Signed_Integer_Type
5292   --  E_Signed_Integer_Subtype
5293   --  E_Modular_Integer_Type
5294   --  E_Modular_Integer_Subtype
5295   --  E_Ordinary_Fixed_Point_Type
5296   --  E_Ordinary_Fixed_Point_Subtype
5297   --  E_Decimal_Fixed_Point_Type
5298   --  E_Decimal_Fixed_Point_Subtype
5299   --  E_Floating_Point_Type
5300   --  E_Floating_Point_Subtype
5301   --  E_Access_Type
5302   --  E_Access_Subtype
5303   --  E_Access_Attribute_Type
5304   --  E_Allocator_Type
5305   --  E_General_Access_Type
5306   --  E_Access_Subprogram_Type
5307   --  E_Access_Protected_Subprogram_Type
5308   --  E_Anonymous_Access_Protected_Subprogram_Type
5309   --  E_Anonymous_Access_Subprogram_Type
5310       E_Anonymous_Access_Type;
5311
5312   subtype Enumeration_Kind            is Entity_Kind range
5313       E_Enumeration_Type ..
5314       E_Enumeration_Subtype;
5315
5316   subtype Entry_Kind                  is Entity_Kind range
5317       E_Entry ..
5318       E_Entry_Family;
5319
5320   subtype Fixed_Point_Kind            is Entity_Kind range
5321       E_Ordinary_Fixed_Point_Type ..
5322   --  E_Ordinary_Fixed_Point_Subtype
5323   --  E_Decimal_Fixed_Point_Type
5324       E_Decimal_Fixed_Point_Subtype;
5325
5326   subtype Float_Kind                  is Entity_Kind range
5327       E_Floating_Point_Type ..
5328       E_Floating_Point_Subtype;
5329
5330   subtype Formal_Kind                 is Entity_Kind range
5331       E_Out_Parameter ..
5332   --  E_In_Out_Parameter
5333       E_In_Parameter;
5334
5335   subtype Formal_Object_Kind          is Entity_Kind range
5336       E_Generic_In_Out_Parameter ..
5337       E_Generic_In_Parameter;
5338
5339   subtype Generic_Subprogram_Kind     is Entity_Kind range
5340       E_Generic_Function ..
5341       E_Generic_Procedure;
5342
5343   subtype Generic_Unit_Kind           is Entity_Kind range
5344       E_Generic_Function ..
5345   --  E_Generic_Procedure
5346       E_Generic_Package;
5347
5348   subtype Incomplete_Kind             is Entity_Kind range
5349       E_Incomplete_Type ..
5350       E_Incomplete_Subtype;
5351
5352   subtype Incomplete_Or_Private_Kind  is Entity_Kind range
5353       E_Record_Type_With_Private ..
5354   --  E_Record_Subtype_With_Private
5355   --  E_Private_Type
5356   --  E_Private_Subtype
5357   --  E_Limited_Private_Type
5358   --  E_Limited_Private_Subtype
5359   --  E_Incomplete_Type
5360       E_Incomplete_Subtype;
5361
5362   subtype Integer_Kind                is Entity_Kind range
5363       E_Signed_Integer_Type ..
5364   --  E_Signed_Integer_Subtype
5365   --  E_Modular_Integer_Type
5366       E_Modular_Integer_Subtype;
5367
5368   subtype Modular_Integer_Kind        is Entity_Kind range
5369       E_Modular_Integer_Type ..
5370       E_Modular_Integer_Subtype;
5371
5372   subtype Named_Kind                  is Entity_Kind range
5373       E_Named_Integer ..
5374       E_Named_Real;
5375
5376   subtype Numeric_Kind                is Entity_Kind range
5377       E_Signed_Integer_Type ..
5378   --  E_Signed_Integer_Subtype
5379   --  E_Modular_Integer_Type
5380   --  E_Modular_Integer_Subtype
5381   --  E_Ordinary_Fixed_Point_Type
5382   --  E_Ordinary_Fixed_Point_Subtype
5383   --  E_Decimal_Fixed_Point_Type
5384   --  E_Decimal_Fixed_Point_Subtype
5385   --  E_Floating_Point_Type
5386       E_Floating_Point_Subtype;
5387
5388   subtype Object_Kind                 is Entity_Kind range
5389       E_Component ..
5390   --  E_Constant
5391   --  E_Discriminant
5392   --  E_Loop_Parameter
5393   --  E_Variable
5394   --  E_Out_Parameter
5395   --  E_In_Out_Parameter
5396   --  E_In_Parameter
5397   --  E_Generic_In_Out_Parameter
5398       E_Generic_In_Parameter;
5399
5400   subtype Ordinary_Fixed_Point_Kind   is Entity_Kind range
5401       E_Ordinary_Fixed_Point_Type ..
5402       E_Ordinary_Fixed_Point_Subtype;
5403
5404   subtype Overloadable_Kind           is Entity_Kind range
5405       E_Enumeration_Literal ..
5406   --  E_Function
5407   --  E_Operator
5408   --  E_Procedure
5409   --  E_Abstract_State
5410       E_Entry;
5411
5412   subtype Private_Kind                is Entity_Kind range
5413       E_Record_Type_With_Private ..
5414   --  E_Record_Subtype_With_Private
5415   --  E_Private_Type
5416   --  E_Private_Subtype
5417   --  E_Limited_Private_Type
5418       E_Limited_Private_Subtype;
5419
5420   subtype Protected_Kind              is Entity_Kind range
5421       E_Protected_Type ..
5422       E_Protected_Subtype;
5423
5424   subtype Real_Kind                   is Entity_Kind range
5425       E_Ordinary_Fixed_Point_Type ..
5426   --  E_Ordinary_Fixed_Point_Subtype
5427   --  E_Decimal_Fixed_Point_Type
5428   --  E_Decimal_Fixed_Point_Subtype
5429   --  E_Floating_Point_Type
5430       E_Floating_Point_Subtype;
5431
5432   subtype Record_Kind                 is Entity_Kind range
5433       E_Class_Wide_Type ..
5434   --  E_Class_Wide_Subtype
5435   --  E_Record_Type
5436   --  E_Record_Subtype
5437   --  E_Record_Type_With_Private
5438       E_Record_Subtype_With_Private;
5439
5440   subtype Scalar_Kind                 is Entity_Kind range
5441       E_Enumeration_Type ..
5442   --  E_Enumeration_Subtype
5443   --  E_Signed_Integer_Type
5444   --  E_Signed_Integer_Subtype
5445   --  E_Modular_Integer_Type
5446   --  E_Modular_Integer_Subtype
5447   --  E_Ordinary_Fixed_Point_Type
5448   --  E_Ordinary_Fixed_Point_Subtype
5449   --  E_Decimal_Fixed_Point_Type
5450   --  E_Decimal_Fixed_Point_Subtype
5451   --  E_Floating_Point_Type
5452       E_Floating_Point_Subtype;
5453
5454   subtype Subprogram_Kind             is Entity_Kind range
5455       E_Function ..
5456   --  E_Operator
5457       E_Procedure;
5458
5459   subtype Signed_Integer_Kind         is Entity_Kind range
5460       E_Signed_Integer_Type ..
5461       E_Signed_Integer_Subtype;
5462
5463   subtype Task_Kind                   is Entity_Kind range
5464       E_Task_Type ..
5465       E_Task_Subtype;
5466
5467   subtype Type_Kind                   is Entity_Kind range
5468       E_Enumeration_Type ..
5469   --  E_Enumeration_Subtype
5470   --  E_Signed_Integer_Type
5471   --  E_Signed_Integer_Subtype
5472   --  E_Modular_Integer_Type
5473   --  E_Modular_Integer_Subtype
5474   --  E_Ordinary_Fixed_Point_Type
5475   --  E_Ordinary_Fixed_Point_Subtype
5476   --  E_Decimal_Fixed_Point_Type
5477   --  E_Decimal_Fixed_Point_Subtype
5478   --  E_Floating_Point_Type
5479   --  E_Floating_Point_Subtype
5480   --  E_Access_Type
5481   --  E_Access_Subtype
5482   --  E_Access_Attribute_Type
5483   --  E_Allocator_Type,
5484   --  E_General_Access_Type
5485   --  E_Access_Subprogram_Type,
5486   --  E_Access_Protected_Subprogram_Type
5487   --  E_Anonymous_Access_Protected_Subprogram_Type
5488   --  E_Anonymous_Access_Subprogram_Type
5489   --  E_Anonymous_Access_Type
5490   --  E_Array_Type
5491   --  E_Array_Subtype
5492   --  E_String_Literal_Subtype
5493   --  E_Class_Wide_Subtype
5494   --  E_Class_Wide_Type
5495   --  E_Record_Type
5496   --  E_Record_Subtype
5497   --  E_Record_Type_With_Private
5498   --  E_Record_Subtype_With_Private
5499   --  E_Private_Type
5500   --  E_Private_Subtype
5501   --  E_Limited_Private_Type
5502   --  E_Limited_Private_Subtype
5503   --  E_Incomplete_Type
5504   --  E_Incomplete_Subtype
5505   --  E_Task_Type
5506   --  E_Task_Subtype
5507   --  E_Protected_Type
5508   --  E_Protected_Subtype
5509   --  E_Exception_Type
5510       E_Subprogram_Type;
5511
5512   --------------------------------------------------------
5513   -- Description of Defined Attributes for Entity_Kinds --
5514   --------------------------------------------------------
5515
5516   --  For each enumeration value defined in Entity_Kind we list all the
5517   --  attributes defined in Einfo which can legally be applied to an entity
5518   --  of that kind. The implementation of the attribute functions (and for
5519   --  non-synthesized attributes, of the corresponding set procedures) are
5520   --  in the Einfo body.
5521
5522   --  The following attributes are defined in all entities
5523
5524   --    Ekind                               (Ekind)
5525
5526   --    Chars                               (Name1)
5527   --    Next_Entity                         (Node2)
5528   --    Scope                               (Node3)
5529   --    Homonym                             (Node4)
5530   --    Etype                               (Node5)
5531   --    First_Rep_Item                      (Node6)
5532   --    Freeze_Node                         (Node7)
5533   --    Associated_Entity                   (Node37)
5534
5535   --    Address_Taken                       (Flag104)
5536   --    Can_Never_Be_Null                   (Flag38)
5537   --    Checks_May_Be_Suppressed            (Flag31)
5538   --    Debug_Info_Off                      (Flag166)
5539   --    Has_Convention_Pragma               (Flag119)
5540   --    Has_Delayed_Aspects                 (Flag200)
5541   --    Has_Delayed_Freeze                  (Flag18)
5542   --    Has_Fully_Qualified_Name            (Flag173)
5543   --    Has_Gigi_Rep_Item                   (Flag82)
5544   --    Has_Homonym                         (Flag56)
5545   --    Has_Pragma_Elaborate_Body           (Flag150)
5546   --    Has_Pragma_Inline                   (Flag157)
5547   --    Has_Pragma_Inline_Always            (Flag230)
5548   --    Has_Pragma_No_Inline                (Flag201)
5549   --    Has_Pragma_Pure                     (Flag203)
5550   --    Has_Pragma_Pure_Function            (Flag179)
5551   --    Has_Pragma_Thread_Local_Storage     (Flag169)
5552   --    Has_Pragma_Unmodified               (Flag233)
5553   --    Has_Pragma_Unreferenced             (Flag180)
5554   --    Has_Pragma_Unused                   (Flag294)
5555   --    Has_Private_Declaration             (Flag155)
5556   --    Has_Qualified_Name                  (Flag161)
5557   --    Has_Stream_Size_Clause              (Flag184)
5558   --    Has_Unknown_Discriminants           (Flag72)
5559   --    Has_Xref_Entry                      (Flag182)
5560   --    In_Private_Part                     (Flag45)
5561   --    Is_Ada_2005_Only                    (Flag185)
5562   --    Is_Ada_2012_Only                    (Flag199)
5563   --    Is_Bit_Packed_Array                 (Flag122)  (base type only)
5564   --    Is_Aliased                          (Flag15)
5565   --    Is_Character_Type                   (Flag63)
5566   --    Is_Checked_Ghost_Entity             (Flag277)
5567   --    Is_Child_Unit                       (Flag73)
5568   --    Is_Compilation_Unit                 (Flag149)
5569   --    Is_Descendant_Of_Address            (Flag223)
5570   --    Is_Discrim_SO_Function              (Flag176)
5571   --    Is_Discriminant_Check_Function      (Flag264)
5572   --    Is_Dispatch_Table_Entity            (Flag234)
5573   --    Is_Dispatching_Operation            (Flag6)
5574   --    Is_Entry_Formal                     (Flag52)
5575   --    Is_Exported                         (Flag99)
5576   --    Is_First_Subtype                    (Flag70)
5577   --    Is_Formal_Subprogram                (Flag111)
5578   --    Is_Generic_Instance                 (Flag130)
5579   --    Is_Generic_Type                     (Flag13)
5580   --    Is_Hidden                           (Flag57)
5581   --    Is_Hidden_Open_Scope                (Flag171)
5582   --    Is_Ignored_Ghost_Entity             (Flag278)
5583   --    Is_Immediately_Visible              (Flag7)
5584   --    Is_Implementation_Defined           (Flag254)
5585   --    Is_Imported                         (Flag24)
5586   --    Is_Inlined                          (Flag11)
5587   --    Is_Internal                         (Flag17)
5588   --    Is_Itype                            (Flag91)
5589   --    Is_Known_Non_Null                   (Flag37)
5590   --    Is_Known_Null                       (Flag204)
5591   --    Is_Known_Valid                      (Flag170)
5592   --    Is_Limited_Composite                (Flag106)
5593   --    Is_Limited_Record                   (Flag25)
5594   --    Is_Obsolescent                      (Flag153)
5595   --    Is_Package_Body_Entity              (Flag160)
5596   --    Is_Packed_Array_Impl_Type           (Flag138)
5597   --    Is_Potentially_Use_Visible          (Flag9)
5598   --    Is_Preelaborated                    (Flag59)
5599   --    Is_Primitive_Wrapper                (Flag195)
5600   --    Is_Public                           (Flag10)
5601   --    Is_Pure                             (Flag44)
5602   --    Is_Remote_Call_Interface            (Flag62)
5603   --    Is_Remote_Types                     (Flag61)
5604   --    Is_Renaming_Of_Object               (Flag112)
5605   --    Is_Shared_Passive                   (Flag60)
5606   --    Is_Statically_Allocated             (Flag28)
5607   --    Is_Static_Type                      (Flag281)
5608   --    Is_Tagged_Type                      (Flag55)
5609   --    Is_Thunk                            (Flag225)
5610   --    Is_Trivial_Subprogram               (Flag235)
5611   --    Is_Unchecked_Union                  (Flag117)
5612   --    Is_Unimplemented                    (Flag284)
5613   --    Is_Visible_Formal                   (Flag206)
5614   --    Kill_Elaboration_Checks             (Flag32)
5615   --    Kill_Range_Checks                   (Flag33)
5616   --    Low_Bound_Tested                    (Flag205)
5617   --    Materialize_Entity                  (Flag168)
5618   --    Needs_Debug_Info                    (Flag147)
5619   --    Never_Set_In_Source                 (Flag115)
5620   --    No_Return                           (Flag113)
5621   --    Overlays_Constant                   (Flag243)
5622   --    Referenced                          (Flag156)
5623   --    Referenced_As_LHS                   (Flag36)
5624   --    Referenced_As_Out_Parameter         (Flag227)
5625   --    Suppress_Elaboration_Warnings       (Flag303)
5626   --    Suppress_Style_Checks               (Flag165)
5627   --    Suppress_Value_Tracking_On_Call     (Flag217)
5628   --    Used_As_Generic_Actual              (Flag222)
5629   --    Warnings_Off                        (Flag96)
5630   --    Warnings_Off_Used                   (Flag236)
5631   --    Warnings_Off_Used_Unmodified        (Flag237)
5632   --    Warnings_Off_Used_Unreferenced      (Flag238)
5633   --    Was_Hidden                          (Flag196)
5634
5635   --    Declaration_Node                    (synth)
5636   --    Has_Foreign_Convention              (synth)
5637   --    Is_Dynamic_Scope                    (synth)
5638   --    Is_Ghost_Entity                     (synth)
5639   --    Is_Standard_Character_Type          (synth)
5640   --    Is_Standard_String_Type             (synth)
5641   --    Underlying_Type                     (synth)
5642   --    all classification attributes       (synth)
5643
5644   --  The following list of access functions applies to all entities for
5645   --  types and subtypes. References to this list appear subsequently as
5646   --  "(plus type attributes)" for each appropriate Entity_Kind.
5647
5648   --    Associated_Node_For_Itype           (Node8)
5649   --    Class_Wide_Type                     (Node9)
5650   --    Full_View                           (Node11)
5651   --    Esize                               (Uint12)
5652   --    RM_Size                             (Uint13)
5653   --    Alignment                           (Uint14)
5654   --    Pending_Access_Types                (Elist15)
5655   --    Related_Expression                  (Node24)
5656   --    Current_Use_Clause                  (Node27)
5657   --    Subprograms_For_Type                (Elist29)
5658   --    Derived_Type_Link                   (Node31)
5659   --    No_Tagged_Streams_Pragma            (Node32)
5660   --    Linker_Section_Pragma               (Node33)
5661   --    SPARK_Pragma                        (Node40)
5662
5663   --    Depends_On_Private                  (Flag14)
5664   --    Disable_Controlled                  (Flag253)
5665   --    Discard_Names                       (Flag88)
5666   --    Finalize_Storage_Only               (Flag158)  (base type only)
5667   --    From_Limited_With                   (Flag159)
5668   --    Has_Aliased_Components              (Flag135)  (base type only)
5669   --    Has_Alignment_Clause                (Flag46)
5670   --    Has_Atomic_Components               (Flag86)   (base type only)
5671   --    Has_Completion_In_Body              (Flag71)
5672   --    Has_Complex_Representation          (Flag140)  (base type only)
5673   --    Has_Constrained_Partial_View        (Flag187)
5674   --    Has_Controlled_Component            (Flag43)   (base type only)
5675   --    Has_Default_Aspect                  (Flag39)   (base type only)
5676   --    Has_Delayed_Rep_Aspects             (Flag261)
5677   --    Has_Discriminants                   (Flag5)
5678   --    Has_Dynamic_Predicate_Aspect        (Flag258)
5679   --    Has_Independent_Components          (Flag34)   (base type only)
5680   --    Has_Inheritable_Invariants          (Flag248)  (base type only)
5681   --    Has_Inherited_DIC                   (Flag133)  (base type only)
5682   --    Has_Inherited_Invariants            (Flag291)  (base type only)
5683   --    Has_Non_Standard_Rep                (Flag75)   (base type only)
5684   --    Has_Object_Size_Clause              (Flag172)
5685   --    Has_Own_DIC                         (Flag3)    (base type only)
5686   --    Has_Own_Invariants                  (Flag232)  (base type only)
5687   --    Has_Pragma_Preelab_Init             (Flag221)
5688   --    Has_Pragma_Unreferenced_Objects     (Flag212)
5689   --    Has_Predicates                      (Flag250)
5690   --    Has_Primitive_Operations            (Flag120)  (base type only)
5691   --    Has_Protected                       (Flag271)  (base type only)
5692   --    Has_Size_Clause                     (Flag29)
5693   --    Has_Specified_Layout                (Flag100)  (base type only)
5694   --    Has_Specified_Stream_Input          (Flag190)
5695   --    Has_Specified_Stream_Output         (Flag191)
5696   --    Has_Specified_Stream_Read           (Flag192)
5697   --    Has_Specified_Stream_Write          (Flag193)
5698   --    Has_Static_Predicate                (Flag269)
5699   --    Has_Static_Predicate_Aspect         (Flag259)
5700   --    Has_Task                            (Flag30)   (base type only)
5701   --    Has_Timing_Event                    (Flag289)  (base type only)
5702   --    Has_Unchecked_Union                 (Flag123)  (base type only)
5703   --    Has_Volatile_Components             (Flag87)   (base type only)
5704   --    In_Use                              (Flag8)
5705   --    Is_Abstract_Type                    (Flag146)
5706   --    Is_Asynchronous                     (Flag81)
5707   --    Is_Atomic                           (Flag85)
5708   --    Is_Constr_Subt_For_U_Nominal        (Flag80)
5709   --    Is_Constr_Subt_For_UN_Aliased       (Flag141)
5710   --    Is_Controlled_Active                (Flag42)   (base type only)
5711   --    Is_Eliminated                       (Flag124)
5712   --    Is_Frozen                           (Flag4)
5713   --    Is_Generic_Actual_Type              (Flag94)
5714   --    Is_Independent                      (Flag268)
5715   --    Is_Non_Static_Subtype               (Flag109)
5716   --    Is_Packed                           (Flag51)   (base type only)
5717   --    Is_Private_Composite                (Flag107)
5718   --    Is_RACW_Stub_Type                   (Flag244)
5719   --    Is_Unsigned_Type                    (Flag144)
5720   --    Is_Volatile                         (Flag16)
5721   --    Is_Volatile_Full_Access             (Flag285)
5722   --    Itype_Printed                       (Flag202)  (itypes only)
5723   --    Known_To_Have_Preelab_Init          (Flag207)
5724   --    May_Inherit_Delayed_Rep_Aspects     (Flag262)
5725   --    Must_Be_On_Byte_Boundary            (Flag183)
5726   --    Must_Have_Preelab_Init              (Flag208)
5727   --    Optimize_Alignment_Space            (Flag241)
5728   --    Optimize_Alignment_Time             (Flag242)
5729   --    Partial_View_Has_Unknown_Discr      (Flag280)
5730   --    Size_Depends_On_Discriminant        (Flag177)
5731   --    Size_Known_At_Compile_Time          (Flag92)
5732   --    SPARK_Pragma_Inherited              (Flag265)
5733   --    Strict_Alignment                    (Flag145)  (base type only)
5734   --    Suppress_Initialization             (Flag105)
5735   --    Treat_As_Volatile                   (Flag41)
5736   --    Universal_Aliasing                  (Flag216)  (impl base type only)
5737
5738   --    Alignment_Clause                    (synth)
5739   --    Base_Type                           (synth)
5740   --    DIC_Procedure                       (synth)
5741   --    Has_DIC                             (synth)
5742   --    Has_Invariants                      (synth)
5743   --    Implementation_Base_Type            (synth)
5744   --    Invariant_Procedure                 (synth)
5745   --    Is_Access_Protected_Subprogram_Type (synth)
5746   --    Is_Atomic_Or_VFA                    (synth)
5747   --    Is_Controlled                       (synth)
5748   --    Partial_Invariant_Procedure         (synth)
5749   --    Predicate_Function                  (synth)
5750   --    Predicate_Function_M                (synth)
5751   --    Root_Type                           (synth)
5752   --    Size_Clause                         (synth)
5753
5754   ------------------------------------------
5755   -- Applicable attributes by entity kind --
5756   ------------------------------------------
5757
5758   --  E_Abstract_State
5759   --    Refinement_Constituents             (Elist8)
5760   --    Part_Of_Constituents                (Elist10)
5761   --    Body_References                     (Elist16)
5762   --    Non_Limited_View                    (Node19)
5763   --    Encapsulating_State                 (Node32)
5764   --    SPARK_Pragma                        (Node40)
5765   --    From_Limited_With                   (Flag159)
5766   --    Has_Partial_Visible_Refinement      (Flag296)
5767   --    Has_Visible_Refinement              (Flag263)
5768   --    SPARK_Pragma_Inherited              (Flag265)
5769   --    Has_Non_Limited_View                (synth)
5770   --    Has_Non_Null_Visible_Refinement     (synth)
5771   --    Has_Null_Visible_Refinement         (synth)
5772   --    Is_External_State                   (synth)
5773   --    Is_Null_State                       (synth)
5774   --    Is_Synchronized_State               (synth)
5775   --    Partial_Refinement_Constituents     (synth)
5776
5777   --  E_Access_Protected_Subprogram_Type
5778   --    Equivalent_Type                     (Node18)
5779   --    Directly_Designated_Type            (Node20)
5780   --    Needs_No_Actuals                    (Flag22)
5781   --    Can_Use_Internal_Rep                (Flag229)
5782   --    (plus type attributes)
5783
5784   --  E_Access_Subprogram_Type
5785   --    Equivalent_Type                     (Node18)   (remote types only)
5786   --    Directly_Designated_Type            (Node20)
5787   --    Needs_No_Actuals                    (Flag22)
5788   --    Original_Access_Type                (Node28)
5789   --    Can_Use_Internal_Rep                (Flag229)
5790   --    (plus type attributes)
5791
5792   --  E_Access_Type
5793   --  E_Access_Subtype
5794   --    Master_Id                           (Node17)
5795   --    Directly_Designated_Type            (Node20)
5796   --    Associated_Storage_Pool             (Node22)   (base type only)
5797   --    Finalization_Master                 (Node23)   (base type only)
5798   --    Storage_Size_Variable               (Node26)   (base type only)
5799   --    Has_Pragma_Controlled               (Flag27)   (base type only)
5800   --    Has_Storage_Size_Clause             (Flag23)   (base type only)
5801   --    Is_Access_Constant                  (Flag69)
5802   --    Is_Local_Anonymous_Access           (Flag194)
5803   --    Is_Pure_Unit_Access_Type            (Flag189)
5804   --    No_Pool_Assigned                    (Flag131)  (base type only)
5805   --    No_Strict_Aliasing                  (Flag136)  (base type only)
5806   --    Is_Param_Block_Component_Type       (Flag215)  (base type only)
5807   --    (plus type attributes)
5808
5809   --  E_Access_Attribute_Type
5810   --    Directly_Designated_Type            (Node20)
5811   --    (plus type attributes)
5812
5813   --  E_Allocator_Type
5814   --    Directly_Designated_Type            (Node20)
5815   --    (plus type attributes)
5816
5817   --  E_Anonymous_Access_Subprogram_Type
5818   --  E_Anonymous_Access_Protected_Subprogram_Type
5819   --    Directly_Designated_Type            (Node20)
5820   --    Storage_Size_Variable               (Node26)   ??? is this needed ???
5821   --    Can_Use_Internal_Rep                (Flag229)
5822   --    (plus type attributes)
5823
5824   --  E_Anonymous_Access_Type
5825   --    Directly_Designated_Type            (Node20)
5826   --    Finalization_Master                 (Node23)
5827   --    Storage_Size_Variable               (Node26)   ??? is this needed ???
5828   --    (plus type attributes)
5829
5830   --  E_Array_Type
5831   --  E_Array_Subtype
5832   --    First_Index                         (Node17)
5833   --    Default_Aspect_Component_Value      (Node19)   (base type only)
5834   --    Component_Type                      (Node20)   (base type only)
5835   --    Original_Array_Type                 (Node21)
5836   --    Component_Size                      (Uint22)   (base type only)
5837   --    Packed_Array_Impl_Type              (Node23)
5838   --    Related_Array_Object                (Node25)
5839   --    Component_Alignment                 (special)  (base type only)
5840   --    Has_Component_Size_Clause           (Flag68)   (base type only)
5841   --    Has_Pragma_Pack                     (Flag121)  (impl base type only)
5842   --    Is_Constrained                      (Flag12)
5843   --    Reverse_Storage_Order               (Flag93)   (base type only)
5844   --    SSO_Set_High_By_Default             (Flag273)  (base type only)
5845   --    SSO_Set_Low_By_Default              (Flag272)  (base type only)
5846   --    Next_Index                          (synth)
5847   --    Number_Dimensions                   (synth)
5848   --    (plus type attributes)
5849
5850   --  E_Block
5851   --    Block_Node                          (Node11)
5852   --    First_Entity                        (Node17)
5853   --    Last_Entity                         (Node20)
5854   --    Scope_Depth_Value                   (Uint22)
5855   --    Entry_Cancel_Parameter              (Node23)
5856   --    Contains_Ignored_Ghost_Code         (Flag279)
5857   --    Delay_Cleanups                      (Flag114)
5858   --    Discard_Names                       (Flag88)
5859   --    Has_Master_Entity                   (Flag21)
5860   --    Has_Nested_Block_With_Handler       (Flag101)
5861   --    Is_Exception_Handler                (Flag286)
5862   --    Sec_Stack_Needed_For_Return         (Flag167)
5863   --    Uses_Sec_Stack                      (Flag95)
5864   --    Scope_Depth                         (synth)
5865
5866   --  E_Class_Wide_Type
5867   --  E_Class_Wide_Subtype
5868   --    Direct_Primitive_Operations         (Elist10)
5869   --    Cloned_Subtype                      (Node16)   (subtype case only)
5870   --    First_Entity                        (Node17)
5871   --    Equivalent_Type                     (Node18)   (always Empty for type)
5872   --    Non_Limited_View                    (Node19)
5873   --    Last_Entity                         (Node20)
5874   --    SSO_Set_High_By_Default             (Flag273)  (base type only)
5875   --    SSO_Set_Low_By_Default              (Flag272)  (base type only)
5876   --    First_Component                     (synth)
5877   --    First_Component_Or_Discriminant     (synth)
5878   --    Has_Non_Limited_View                (synth)
5879   --    (plus type attributes)
5880
5881   --  E_Component
5882   --    Normalized_First_Bit                (Uint8)
5883   --    Current_Value                       (Node9)    (always Empty)
5884   --    Normalized_Position_Max             (Uint10)
5885   --    Component_Bit_Offset                (Uint11)
5886   --    Esize                               (Uint12)
5887   --    Component_Clause                    (Node13)
5888   --    Normalized_Position                 (Uint14)
5889   --    DT_Entry_Count                      (Uint15)
5890   --    Entry_Formal                        (Node16)
5891   --    Prival                              (Node17)
5892   --    Renamed_Object                      (Node18)   (always Empty)
5893   --    Discriminant_Checking_Func          (Node20)
5894   --    Corresponding_Record_Component      (Node21)
5895   --    Original_Record_Component           (Node22)
5896   --    DT_Offset_To_Top_Func               (Node25)
5897   --    Related_Type                        (Node27)
5898   --    Has_Biased_Representation           (Flag139)
5899   --    Has_Per_Object_Constraint           (Flag154)
5900   --    Is_Atomic                           (Flag85)
5901   --    Is_Independent                      (Flag268)
5902   --    Is_Return_Object                    (Flag209)
5903   --    Is_Tag                              (Flag78)
5904   --    Is_Volatile                         (Flag16)
5905   --    Is_Volatile_Full_Access             (Flag285)
5906   --    Treat_As_Volatile                   (Flag41)
5907   --    Is_Atomic_Or_VFA                    (synth)
5908   --    Next_Component                      (synth)
5909   --    Next_Component_Or_Discriminant      (synth)
5910
5911   --  E_Constant
5912   --  E_Loop_Parameter
5913   --    Current_Value                       (Node9)    (always Empty)
5914   --    Discriminal_Link                    (Node10)
5915   --    Full_View                           (Node11)
5916   --    Esize                               (Uint12)
5917   --    Extra_Accessibility                 (Node13)   (constants only)
5918   --    Alignment                           (Uint14)
5919   --    Status_Flag_Or_Transient_Decl       (Node15)
5920   --    Actual_Subtype                      (Node17)
5921   --    Renamed_Object                      (Node18)
5922   --    Size_Check_Code                     (Node19)   (constants only)
5923   --    Prival_Link                         (Node20)   (privals only)
5924   --    Interface_Name                      (Node21)   (constants only)
5925   --    Related_Type                        (Node27)   (constants only)
5926   --    Initialization_Statements           (Node28)
5927   --    BIP_Initialization_Call             (Node29)
5928   --    Last_Aggregate_Assignment           (Node30)
5929   --    Activation_Record_Component         (Node31)
5930   --    Encapsulating_State                 (Node32)   (constants only)
5931   --    Linker_Section_Pragma               (Node33)
5932   --    Contract                            (Node34)   (constants only)
5933   --    SPARK_Pragma                        (Node40)   (constants only)
5934   --    Has_Alignment_Clause                (Flag46)
5935   --    Has_Atomic_Components               (Flag86)
5936   --    Has_Biased_Representation           (Flag139)
5937   --    Has_Completion                      (Flag26)   (constants only)
5938   --    Has_Independent_Components          (Flag34)
5939   --    Has_Size_Clause                     (Flag29)
5940   --    Has_Thunks                          (Flag228)  (constants only)
5941   --    Has_Volatile_Components             (Flag87)
5942   --    Is_Atomic                           (Flag85)
5943   --    Is_Elaboration_Checks_OK_Id         (Flag148)  (constants only)
5944   --    Is_Eliminated                       (Flag124)
5945   --    Is_Finalized_Transient              (Flag252)
5946   --    Is_Ignored_Transient                (Flag295)
5947   --    Is_Independent                      (Flag268)
5948   --    Is_Return_Object                    (Flag209)
5949   --    Is_True_Constant                    (Flag163)
5950   --    Is_Uplevel_Referenced_Entity        (Flag283)
5951   --    Is_Volatile                         (Flag16)
5952   --    Is_Volatile_Full_Access             (Flag285)
5953   --    Optimize_Alignment_Space            (Flag241)  (constants only)
5954   --    Optimize_Alignment_Time             (Flag242)  (constants only)
5955   --    SPARK_Pragma_Inherited              (Flag265)  (constants only)
5956   --    Stores_Attribute_Old_Prefix         (Flag270)  (constants only)
5957   --    Treat_As_Volatile                   (Flag41)
5958   --    Address_Clause                      (synth)
5959   --    Alignment_Clause                    (synth)
5960   --    Is_Atomic_Or_VFA                    (synth)
5961   --    Size_Clause                         (synth)
5962
5963   --  E_Decimal_Fixed_Point_Type
5964   --  E_Decimal_Fixed_Subtype
5965   --    Scale_Value                         (Uint16)
5966   --    Digits_Value                        (Uint17)
5967   --    Scalar_Range                        (Node20)
5968   --    Delta_Value                         (Ureal18)
5969   --    Small_Value                         (Ureal21)
5970   --    Static_Real_Or_String_Predicate     (Node25)
5971   --    Has_Machine_Radix_Clause            (Flag83)
5972   --    Machine_Radix_10                    (Flag84)
5973   --    Aft_Value                           (synth)
5974   --    Type_Low_Bound                      (synth)
5975   --    Type_High_Bound                     (synth)
5976   --    (plus type attributes)
5977
5978   --  E_Discriminant
5979   --    Normalized_First_Bit                (Uint8)
5980   --    Current_Value                       (Node9)    (always Empty)
5981   --    Normalized_Position_Max             (Uint10)
5982   --    Component_Bit_Offset                (Uint11)
5983   --    Esize                               (Uint12)
5984   --    Component_Clause                    (Node13)
5985   --    Normalized_Position                 (Uint14)
5986   --    Discriminant_Number                 (Uint15)
5987   --    Discriminal                         (Node17)
5988   --    Renamed_Object                      (Node18)   (always Empty)
5989   --    Corresponding_Discriminant          (Node19)
5990   --    Discriminant_Default_Value          (Node20)
5991   --    Corresponding_Record_Component      (Node21)
5992   --    Original_Record_Component           (Node22)
5993   --    CR_Discriminant                     (Node23)
5994   --    Is_Completely_Hidden                (Flag103)
5995   --    Is_Return_Object                    (Flag209)
5996   --    Next_Component_Or_Discriminant      (synth)
5997   --    Next_Discriminant                   (synth)
5998   --    Next_Stored_Discriminant            (synth)
5999
6000   --  E_Entry
6001   --  E_Entry_Family
6002   --    Protected_Body_Subprogram           (Node11)
6003   --    Barrier_Function                    (Node12)
6004   --    Postconditions_Proc                 (Node14)
6005   --    Entry_Parameters_Type               (Node15)
6006   --    First_Entity                        (Node17)
6007   --    Alias                               (Node18)   (for entry only. Empty)
6008   --    Last_Entity                         (Node20)
6009   --    Accept_Address                      (Elist21)
6010   --    Scope_Depth_Value                   (Uint22)
6011   --    Protection_Object                   (Node23)   (protected kind)
6012   --    Contract_Wrapper                    (Node25)
6013   --    Extra_Formals                       (Node28)
6014   --    Contract                            (Node34)
6015   --    SPARK_Pragma                        (Node40)   (protected kind)
6016   --    Default_Expressions_Processed       (Flag108)
6017   --    Entry_Accepted                      (Flag152)
6018   --    Has_Expanded_Contract               (Flag240)
6019   --    Ignore_SPARK_Mode_Pragmas           (Flag301)
6020   --    Is_Elaboration_Checks_OK_Id         (Flag148)
6021   --    Is_Entry_Wrapper                    (Flag297)
6022   --    Needs_No_Actuals                    (Flag22)
6023   --    Sec_Stack_Needed_For_Return         (Flag167)
6024   --    SPARK_Pragma_Inherited              (Flag265)  (protected kind)
6025   --    Uses_Sec_Stack                      (Flag95)
6026   --    Address_Clause                      (synth)
6027   --    Entry_Index_Type                    (synth)
6028   --    First_Formal                        (synth)
6029   --    First_Formal_With_Extras            (synth)
6030   --    Last_Formal                         (synth)
6031   --    Number_Formals                      (synth)
6032   --    Scope_Depth                         (synth)
6033
6034   --  E_Entry_Index_Parameter
6035   --    Entry_Index_Constant                (Node18)
6036
6037   --  E_Enumeration_Literal
6038   --    Enumeration_Pos                     (Uint11)
6039   --    Enumeration_Rep                     (Uint12)
6040   --    Alias                               (Node18)
6041   --    Enumeration_Rep_Expr                (Node22)
6042   --    Next_Literal                        (synth)
6043
6044   --  E_Enumeration_Type
6045   --  E_Enumeration_Subtype
6046   --    Lit_Strings                         (Node16)   (root type only)
6047   --    First_Literal                       (Node17)
6048   --    Lit_Indexes                         (Node18)   (root type only)
6049   --    Default_Aspect_Value                (Node19)   (base type only)
6050   --    Scalar_Range                        (Node20)
6051   --    Enum_Pos_To_Rep                     (Node23)   (type only)
6052   --    Static_Discrete_Predicate           (List25)
6053   --    Has_Biased_Representation           (Flag139)
6054   --    Has_Contiguous_Rep                  (Flag181)
6055   --    Has_Enumeration_Rep_Clause          (Flag66)
6056   --    Has_Pragma_Ordered                  (Flag198)  (base type only)
6057   --    Nonzero_Is_True                     (Flag162)  (base type only)
6058   --    No_Predicate_On_Actual              (Flag275)
6059   --    No_Dynamic_Predicate_On_Actual      (Flag276)
6060   --    Type_Low_Bound                      (synth)
6061   --    Type_High_Bound                     (synth)
6062   --    (plus type attributes)
6063
6064   --  E_Exception
6065   --    Esize                               (Uint12)
6066   --    Alignment                           (Uint14)
6067   --    Renamed_Entity                      (Node18)
6068   --    Register_Exception_Call             (Node20)
6069   --    Interface_Name                      (Node21)
6070   --    Discard_Names                       (Flag88)
6071   --    Is_Raised                           (Flag224)
6072
6073   --  E_Exception_Type
6074   --    Equivalent_Type                     (Node18)
6075   --    (plus type attributes)
6076
6077   --  E_Floating_Point_Type
6078   --  E_Floating_Point_Subtype
6079   --    Digits_Value                        (Uint17)
6080   --    Float_Rep                           (Uint10)   (Float_Rep_Kind)
6081   --    Default_Aspect_Value                (Node19)   (base type only)
6082   --    Scalar_Range                        (Node20)
6083   --    Static_Real_Or_String_Predicate     (Node25)
6084   --    Machine_Emax_Value                  (synth)
6085   --    Machine_Emin_Value                  (synth)
6086   --    Machine_Mantissa_Value              (synth)
6087   --    Machine_Radix_Value                 (synth)
6088   --    Model_Emin_Value                    (synth)
6089   --    Model_Epsilon_Value                 (synth)
6090   --    Model_Mantissa_Value                (synth)
6091   --    Model_Small_Value                   (synth)
6092   --    Safe_Emax_Value                     (synth)
6093   --    Safe_First_Value                    (synth)
6094   --    Safe_Last_Value                     (synth)
6095   --    Type_Low_Bound                      (synth)
6096   --    Type_High_Bound                     (synth)
6097   --    (plus type attributes)
6098
6099   --  E_Function
6100   --  E_Generic_Function
6101   --    Mechanism                           (Uint8)    (Mechanism_Type)
6102   --    Renaming_Map                        (Uint9)
6103   --    Handler_Records                     (List10)   (non-generic case only)
6104   --    Protected_Body_Subprogram           (Node11)
6105   --    Next_Inlined_Subprogram             (Node12)
6106   --    Elaboration_Entity                  (Node13)   (not implicit /=)
6107   --    Postconditions_Proc                 (Node14)   (non-generic case only)
6108   --    DT_Position                         (Uint15)
6109   --    DTC_Entity                          (Node16)
6110   --    First_Entity                        (Node17)
6111   --    Alias                               (Node18)   (non-generic case only)
6112   --    Renamed_Entity                      (Node18)   (generic case only)
6113   --    Extra_Accessibility_Of_Result       (Node19)   (non-generic case only)
6114   --    Last_Entity                         (Node20)
6115   --    Interface_Name                      (Node21)
6116   --    Scope_Depth_Value                   (Uint22)
6117   --    Generic_Renamings                   (Elist23)  (for an instance)
6118   --    Inner_Instances                     (Elist23)  (generic case only)
6119   --    Protection_Object                   (Node23)   (for concurrent kind)
6120   --    Subps_Index                         (Uint24)   (non-generic case only)
6121   --    Interface_Alias                     (Node25)
6122   --    Overridden_Operation                (Node26)
6123   --    Wrapped_Entity                      (Node27)   (non-generic case only)
6124   --    Extra_Formals                       (Node28)
6125   --    Anonymous_Masters                   (Elist29)  (non-generic case only)
6126   --    Corresponding_Equality              (Node30)   (implicit /= only)
6127   --    Thunk_Entity                        (Node31)   (thunk case only)
6128   --    Corresponding_Procedure             (Node32)   (generate C code only)
6129   --    Linker_Section_Pragma               (Node33)
6130   --    Contract                            (Node34)
6131   --    Import_Pragma                       (Node35)   (non-generic case only)
6132   --    Nested_Scenarios                    (Elist36)
6133   --    Class_Wide_Clone                    (Node38)
6134   --    Protected_Subprogram                (Node39)   (non-generic case only)
6135   --    SPARK_Pragma                        (Node40)
6136   --    Original_Protected_Subprogram       (Node41)
6137   --    Body_Needed_For_SAL                 (Flag40)
6138   --    Contains_Ignored_Ghost_Code         (Flag279)
6139   --    Default_Expressions_Processed       (Flag108)
6140   --    Delay_Cleanups                      (Flag114)
6141   --    Delay_Subprogram_Descriptors        (Flag50)
6142   --    Discard_Names                       (Flag88)
6143   --    Elaboration_Entity_Required         (Flag174)
6144   --    Has_Completion                      (Flag26)
6145   --    Has_Controlling_Result              (Flag98)
6146   --    Has_Expanded_Contract               (Flag240)  (non-generic case only)
6147   --    Has_Master_Entity                   (Flag21)
6148   --    Has_Missing_Return                  (Flag142)
6149   --    Has_Nested_Block_With_Handler       (Flag101)
6150   --    Has_Nested_Subprogram               (Flag282)
6151   --    Has_Out_Or_In_Out_Parameter         (Flag110)
6152   --    Has_Recursive_Call                  (Flag143)
6153   --    Ignore_SPARK_Mode_Pragmas           (Flag301)
6154   --    Is_Abstract_Subprogram              (Flag19)   (non-generic case only)
6155   --    Is_Called                           (Flag102)  (non-generic case only)
6156   --    Is_Constructor                      (Flag76)
6157   --    Is_DIC_Procedure                    (Flag132)  (non-generic case only)
6158   --    Is_Discrim_SO_Function              (Flag176)
6159   --    Is_Discriminant_Check_Function      (Flag264)
6160   --    Is_Elaboration_Checks_OK_Id         (Flag148)
6161   --    Is_Eliminated                       (Flag124)
6162   --    Is_Generic_Actual_Subprogram        (Flag274)  (non-generic case only)
6163   --    Is_Hidden_Non_Overridden_Subpgm     (Flag2)    (non-generic case only)
6164   --    Is_Initial_Condition_Procedure      (Flag302)  (non-generic case only)
6165   --    Is_Inlined_Always                   (Flag1)    (non-generic case only)
6166   --    Is_Instantiated                     (Flag126)  (generic case only)
6167   --    Is_Intrinsic_Subprogram             (Flag64)
6168   --    Is_Invariant_Procedure              (Flag257)  (non-generic case only)
6169   --    Is_Machine_Code_Subprogram          (Flag137)  (non-generic case only)
6170   --    Is_Partial_Invariant_Procedure      (Flag292)  (non-generic case only)
6171   --    Is_Predicate_Function               (Flag255)  (non-generic case only)
6172   --    Is_Predicate_Function_M             (Flag256)  (non-generic case only)
6173   --    Is_Primitive                        (Flag218)
6174   --    Is_Primitive_Wrapper                (Flag195)  (non-generic case only)
6175   --    Is_Private_Descendant               (Flag53)
6176   --    Is_Private_Primitive                (Flag245)  (non-generic case only)
6177   --    Is_Pure                             (Flag44)
6178   --    Is_Visible_Lib_Unit                 (Flag116)
6179   --    Needs_No_Actuals                    (Flag22)
6180   --    Requires_Overriding                 (Flag213)  (non-generic case only)
6181   --    Return_Present                      (Flag54)
6182   --    Returns_By_Ref                      (Flag90)
6183   --    Rewritten_For_C                     (Flag287)  (generate C code only)
6184   --    Sec_Stack_Needed_For_Return         (Flag167)
6185   --    SPARK_Pragma_Inherited              (Flag265)
6186   --    Uses_Sec_Stack                      (Flag95)
6187   --    Address_Clause                      (synth)
6188   --    First_Formal                        (synth)
6189   --    First_Formal_With_Extras            (synth)
6190   --    Last_Formal                         (synth)
6191   --    Number_Formals                      (synth)
6192   --    Scope_Depth                         (synth)
6193
6194   --  E_General_Access_Type
6195   --    Master_Id                           (Node17)
6196   --    Directly_Designated_Type            (Node20)
6197   --    Associated_Storage_Pool             (Node22)   (root type only)
6198   --    Finalization_Master                 (Node23)   (root type only)
6199   --    Storage_Size_Variable               (Node26)   (base type only)
6200   --    (plus type attributes)
6201
6202   --  E_Generic_In_Parameter
6203   --  E_Generic_In_Out_Parameter
6204   --    Current_Value                       (Node9)    (always Empty)
6205   --    Entry_Component                     (Node11)
6206   --    Actual_Subtype                      (Node17)
6207   --    Renamed_Object                      (Node18)   (always Empty)
6208   --    Default_Value                       (Node20)
6209   --    Protected_Formal                    (Node22)
6210   --    Is_Controlling_Formal               (Flag97)
6211   --    Is_Return_Object                    (Flag209)
6212   --    Parameter_Mode                      (synth)
6213
6214   --  E_Incomplete_Type
6215   --  E_Incomplete_Subtype
6216   --    Direct_Primitive_Operations         (Elist10)
6217   --    Non_Limited_View                    (Node19)
6218   --    Private_Dependents                  (Elist18)
6219   --    Discriminant_Constraint             (Elist21)
6220   --    Stored_Constraint                   (Elist23)
6221   --    Has_Non_Limited_View                (synth)
6222   --    (plus type attributes)
6223
6224   --  E_In_Parameter
6225   --  E_In_Out_Parameter
6226   --  E_Out_Parameter
6227   --    Mechanism                           (Uint8)    (Mechanism_Type)
6228   --    Current_Value                       (Node9)
6229   --    Discriminal_Link                    (Node10)   (discriminals only)
6230   --    Entry_Component                     (Node11)
6231   --    Esize                               (Uint12)
6232   --    Extra_Accessibility                 (Node13)
6233   --    Alignment                           (Uint14)
6234   --    Extra_Formal                        (Node15)
6235   --    Unset_Reference                     (Node16)
6236   --    Actual_Subtype                      (Node17)
6237   --    Renamed_Object                      (Node18)
6238   --    Spec_Entity                         (Node19)
6239   --    Default_Value                       (Node20)
6240   --    Default_Expr_Function               (Node21)
6241   --    Protected_Formal                    (Node22)
6242   --    Extra_Constrained                   (Node23)
6243   --    Last_Assignment                     (Node26)   (OUT, IN-OUT only)
6244   --    Activation_Record_Component         (Node31)
6245   --    Has_Initial_Value                   (Flag219)
6246   --    Is_Controlling_Formal               (Flag97)
6247   --    Is_Only_Out_Parameter               (Flag226)
6248   --    Low_Bound_Tested                    (Flag205)
6249   --    Is_Return_Object                    (Flag209)
6250   --    Parameter_Mode                      (synth)
6251
6252   --  E_Label
6253   --    Enclosing_Scope                     (Node18)
6254   --    Reachable                           (Flag49)
6255
6256   --  E_Limited_Private_Type
6257   --  E_Limited_Private_Subtype
6258   --    First_Entity                        (Node17)
6259   --    Private_Dependents                  (Elist18)
6260   --    Underlying_Full_View                (Node19)
6261   --    Last_Entity                         (Node20)
6262   --    Discriminant_Constraint             (Elist21)
6263   --    Private_View                        (Node22)
6264   --    Stored_Constraint                   (Elist23)
6265   --    Has_Completion                      (Flag26)
6266   --    (plus type attributes)
6267
6268   --  E_Loop
6269   --    First_Exit_Statement                (Node8)
6270   --    Has_Exit                            (Flag47)
6271   --    Has_Loop_Entry_Attributes           (Flag260)
6272   --    Has_Master_Entity                   (Flag21)
6273   --    Has_Nested_Block_With_Handler       (Flag101)
6274   --    Uses_Sec_Stack                      (Flag95)
6275
6276   --  E_Modular_Integer_Type
6277   --  E_Modular_Integer_Subtype
6278   --    Modulus                             (Uint17)   (base type only)
6279   --    Default_Aspect_Value                (Node19)   (base type only)
6280   --    Original_Array_Type                 (Node21)
6281   --    Scalar_Range                        (Node20)
6282   --    Static_Discrete_Predicate           (List25)
6283   --    Non_Binary_Modulus                  (Flag58)   (base type only)
6284   --    Has_Biased_Representation           (Flag139)
6285   --    Has_Shift_Operator                  (Flag267)  (base type only)
6286   --    No_Predicate_On_Actual              (Flag275)
6287   --    No_Dynamic_Predicate_On_Actual      (Flag276)
6288   --    Type_Low_Bound                      (synth)
6289   --    Type_High_Bound                     (synth)
6290   --    (plus type attributes)
6291
6292   --  E_Named_Integer
6293
6294   --  E_Named_Real
6295
6296   --  E_Operator
6297   --    First_Entity                        (Node17)
6298   --    Alias                               (Node18)
6299   --    Extra_Accessibility_Of_Result       (Node19)
6300   --    Last_Entity                         (Node20)
6301   --    Subps_Index                         (Uint24)
6302   --    Overridden_Operation                (Node26)
6303   --    Linker_Section_Pragma               (Node33)
6304   --    Contract                            (Node34)
6305   --    Import_Pragma                       (Node35)
6306   --    SPARK_Pragma                        (Node40)
6307   --    Default_Expressions_Processed       (Flag108)
6308   --    Has_Nested_Subprogram               (Flag282)
6309   --    Ignore_SPARK_Mode_Pragmas           (Flag301)
6310   --    Is_Elaboration_Checks_OK_Id         (Flag148)
6311   --    Is_Intrinsic_Subprogram             (Flag64)
6312   --    Is_Machine_Code_Subprogram          (Flag137)
6313   --    Is_Primitive                        (Flag218)
6314   --    Is_Pure                             (Flag44)
6315   --    SPARK_Pragma_Inherited              (Flag265)
6316   --    Aren't there more flags and fields? seems like this list should be
6317   --    more similar to the E_Function list, which is much longer ???
6318
6319   --  E_Ordinary_Fixed_Point_Type
6320   --  E_Ordinary_Fixed_Point_Subtype
6321   --    Delta_Value                         (Ureal18)
6322   --    Default_Aspect_Value                (Node19)   (base type only)
6323   --    Scalar_Range                        (Node20)
6324   --    Static_Real_Or_String_Predicate     (Node25)
6325   --    Small_Value                         (Ureal21)
6326   --    Has_Small_Clause                    (Flag67)
6327   --    Aft_Value                           (synth)
6328   --    Type_Low_Bound                      (synth)
6329   --    Type_High_Bound                     (synth)
6330   --    (plus type attributes)
6331
6332   --  E_Package
6333   --  E_Generic_Package
6334   --    Dependent_Instances                 (Elist8)   (for an instance)
6335   --    Renaming_Map                        (Uint9)
6336   --    Handler_Records                     (List10)   (non-generic case only)
6337   --    Generic_Homonym                     (Node11)   (generic case only)
6338   --    Associated_Formal_Package           (Node12)
6339   --    Elaboration_Entity                  (Node13)
6340   --    Shadow_Entities                     (List14)
6341   --    Related_Instance                    (Node15)   (non-generic case only)
6342   --    First_Private_Entity                (Node16)
6343   --    First_Entity                        (Node17)
6344   --    Renamed_Entity                      (Node18)
6345   --    Body_Entity                         (Node19)
6346   --    Last_Entity                         (Node20)
6347   --    Interface_Name                      (Node21)
6348   --    Scope_Depth_Value                   (Uint22)
6349   --    Generic_Renamings                   (Elist23)  (for an instance)
6350   --    Inner_Instances                     (Elist23)  (generic case only)
6351   --    Limited_View                        (Node23)   (non-generic/instance)
6352   --    Incomplete_Actuals                  (Elist24)  (for an instance)
6353   --    Abstract_States                     (Elist25)
6354   --    Package_Instantiation               (Node26)
6355   --    Current_Use_Clause                  (Node27)
6356   --    Finalizer                           (Node28)   (non-generic case only)
6357   --    Anonymous_Masters                   (Elist29)  (non-generic case only)
6358   --    Contract                            (Node34)
6359   --    SPARK_Pragma                        (Node40)
6360   --    SPARK_Aux_Pragma                    (Node41)
6361   --    Body_Needed_For_Inlining            (Flag299)
6362   --    Body_Needed_For_SAL                 (Flag40)
6363   --    Contains_Ignored_Ghost_Code         (Flag279)
6364   --    Delay_Subprogram_Descriptors        (Flag50)
6365   --    Discard_Names                       (Flag88)
6366   --    Elaborate_Body_Desirable            (Flag210)  (non-generic case only)
6367   --    Elaboration_Entity_Required         (Flag174)
6368   --    From_Limited_With                   (Flag159)
6369   --    Has_All_Calls_Remote                (Flag79)
6370   --    Has_Completion                      (Flag26)
6371   --    Has_Forward_Instantiation           (Flag175)
6372   --    Has_Master_Entity                   (Flag21)
6373   --    Has_RACW                            (Flag214)  (non-generic case only)
6374   --    Ignore_SPARK_Mode_Pragmas           (Flag301)
6375   --    In_Package_Body                     (Flag48)
6376   --    In_Use                              (Flag8)
6377   --    Is_Elaboration_Checks_OK_Id         (Flag148)
6378   --    Is_Instantiated                     (Flag126)
6379   --    Is_Private_Descendant               (Flag53)
6380   --    Is_Visible_Lib_Unit                 (Flag116)
6381   --    Renamed_In_Spec                     (Flag231)  (non-generic case only)
6382   --    SPARK_Aux_Pragma_Inherited          (Flag266)
6383   --    SPARK_Pragma_Inherited              (Flag265)
6384   --    Static_Elaboration_Desired          (Flag77)   (non-generic case only)
6385   --    Has_Non_Null_Abstract_State         (synth)
6386   --    Has_Null_Abstract_State             (synth)
6387   --    Is_Wrapper_Package                  (synth)    (non-generic case only)
6388   --    Scope_Depth                         (synth)
6389
6390   --  E_Package_Body
6391   --    Handler_Records                     (List10)   (non-generic case only)
6392   --    Related_Instance                    (Node15)   (non-generic case only)
6393   --    First_Entity                        (Node17)
6394   --    Spec_Entity                         (Node19)
6395   --    Last_Entity                         (Node20)
6396   --    Scope_Depth_Value                   (Uint22)
6397   --    Finalizer                           (Node28)   (non-generic case only)
6398   --    Contract                            (Node34)
6399   --    SPARK_Pragma                        (Node40)
6400   --    SPARK_Aux_Pragma                    (Node41)
6401   --    Contains_Ignored_Ghost_Code         (Flag279)
6402   --    Delay_Subprogram_Descriptors        (Flag50)
6403   --    Ignore_SPARK_Mode_Pragmas           (Flag301)
6404   --    SPARK_Aux_Pragma_Inherited          (Flag266)
6405   --    SPARK_Pragma_Inherited              (Flag265)
6406   --    Scope_Depth                         (synth)
6407
6408   --  E_Private_Type
6409   --  E_Private_Subtype
6410   --    Direct_Primitive_Operations         (Elist10)
6411   --    First_Entity                        (Node17)
6412   --    Private_Dependents                  (Elist18)
6413   --    Underlying_Full_View                (Node19)
6414   --    Last_Entity                         (Node20)
6415   --    Discriminant_Constraint             (Elist21)
6416   --    Private_View                        (Node22)
6417   --    Stored_Constraint                   (Elist23)
6418   --    Has_Completion                      (Flag26)
6419   --    Is_Controlled_Active                (Flag42)   (base type only)
6420   --    Is_For_Access_Subtype               (Flag118)  (subtype only)
6421   --    (plus type attributes)
6422
6423   --  E_Procedure
6424   --  E_Generic_Procedure
6425   --    Renaming_Map                        (Uint9)
6426   --    Handler_Records                     (List10)   (non-generic case only)
6427   --    Protected_Body_Subprogram           (Node11)
6428   --    Next_Inlined_Subprogram             (Node12)
6429   --    Elaboration_Entity                  (Node13)
6430   --    Postconditions_Proc                 (Node14)   (non-generic case only)
6431   --    DT_Position                         (Uint15)
6432   --    DTC_Entity                          (Node16)
6433   --    First_Entity                        (Node17)
6434   --    Alias                               (Node18)   (non-generic case only)
6435   --    Renamed_Entity                      (Node18)   (generic case only)
6436   --    Receiving_Entry                     (Node19)   (non-generic case only)
6437   --    Last_Entity                         (Node20)
6438   --    Interface_Name                      (Node21)
6439   --    Scope_Depth_Value                   (Uint22)
6440   --    Generic_Renamings                   (Elist23)  (for an instance)
6441   --    Inner_Instances                     (Elist23)  (generic case only)
6442   --    Protection_Object                   (Node23)   (for concurrent kind)
6443   --    Subps_Index                         (Uint24)   (non-generic case only)
6444   --    Interface_Alias                     (Node25)
6445   --    Overridden_Operation                (Node26)   (never for init proc)
6446   --    Wrapped_Entity                      (Node27)   (non-generic case only)
6447   --    Extra_Formals                       (Node28)
6448   --    Anonymous_Masters                   (Elist29)  (non-generic case only)
6449   --    Static_Initialization               (Node30)   (init_proc only)
6450   --    Thunk_Entity                        (Node31)   (thunk case only)
6451   --    Corresponding_Function              (Node32)   (generate C code only)
6452   --    Linker_Section_Pragma               (Node33)
6453   --    Contract                            (Node34)
6454   --    Import_Pragma                       (Node35)   (non-generic case only)
6455   --    Nested_Scenarios                    (Elist36)
6456   --    Class_Wide_Clone                    (Node38)
6457   --    Protected_Subprogram                (Node39)   (non-generic case only)
6458   --    SPARK_Pragma                        (Node40)
6459   --    Original_Protected_Subprogram       (Node41)
6460   --    Body_Needed_For_SAL                 (Flag40)
6461   --    Contains_Ignored_Ghost_Code         (Flag279)
6462   --    Delay_Cleanups                      (Flag114)
6463   --    Discard_Names                       (Flag88)
6464   --    Elaboration_Entity_Required         (Flag174)
6465   --    Default_Expressions_Processed       (Flag108)
6466   --    Delay_Cleanups                      (Flag114)
6467   --    Delay_Subprogram_Descriptors        (Flag50)
6468   --    Discard_Names                       (Flag88)
6469   --    Has_Completion                      (Flag26)
6470   --    Has_Expanded_Contract               (Flag240)  (non-generic case only)
6471   --    Has_Master_Entity                   (Flag21)
6472   --    Has_Nested_Block_With_Handler       (Flag101)
6473   --    Has_Nested_Subprogram               (Flag282)
6474   --    Ignore_SPARK_Mode_Pragmas           (Flag301)
6475   --    Is_Abstract_Subprogram              (Flag19)   (non-generic case only)
6476   --    Is_Asynchronous                     (Flag81)
6477   --    Is_Called                           (Flag102)  (non-generic case only)
6478   --    Is_Constructor                      (Flag76)
6479   --    Is_DIC_Procedure                    (Flag132)  (non-generic case only)
6480   --    Is_Elaboration_Checks_OK_Id         (Flag148)
6481   --    Is_Eliminated                       (Flag124)
6482   --    Is_Generic_Actual_Subprogram        (Flag274)  (non-generic case only)
6483   --    Is_Hidden_Non_Overridden_Subpgm     (Flag2)    (non-generic case only)
6484   --    Is_Initial_Condition_Procedure      (Flag302)  (non-generic case only)
6485   --    Is_Inlined_Always                   (Flag1)    (non-generic case only)
6486   --    Is_Instantiated                     (Flag126)  (generic case only)
6487   --    Is_Interrupt_Handler                (Flag89)
6488   --    Is_Intrinsic_Subprogram             (Flag64)
6489   --    Is_Invariant_Procedure              (Flag257)  (non-generic case only)
6490   --    Is_Machine_Code_Subprogram          (Flag137)  (non-generic case only)
6491   --    Is_Null_Init_Proc                   (Flag178)
6492   --    Is_Partial_Invariant_Procedure      (Flag292)  (non-generic case only)
6493   --    Is_Predicate_Function               (Flag255)  (non-generic case only)
6494   --    Is_Predicate_Function_M             (Flag256)  (non-generic case only)
6495   --    Is_Primitive                        (Flag218)
6496   --    Is_Primitive_Wrapper                (Flag195)  (non-generic case only)
6497   --    Is_Private_Descendant               (Flag53)
6498   --    Is_Private_Primitive                (Flag245)  (non-generic case only)
6499   --    Is_Pure                             (Flag44)
6500   --    Is_Valued_Procedure                 (Flag127)
6501   --    Is_Visible_Lib_Unit                 (Flag116)
6502   --    Needs_No_Actuals                    (Flag22)
6503   --    No_Return                           (Flag113)
6504   --    Requires_Overriding                 (Flag213)  (non-generic case only)
6505   --    Sec_Stack_Needed_For_Return         (Flag167)
6506   --    SPARK_Pragma_Inherited              (Flag265)
6507   --    Address_Clause                      (synth)
6508   --    First_Formal                        (synth)
6509   --    First_Formal_With_Extras            (synth)
6510   --    Is_Finalizer                        (synth)
6511   --    Last_Formal                         (synth)
6512   --    Number_Formals                      (synth)
6513
6514   --  E_Protected_Body
6515   --    SPARK_Pragma                        (Node40)
6516   --    Ignore_SPARK_Mode_Pragmas           (Flag301)
6517   --    SPARK_Pragma_Inherited              (Flag265)
6518   --    (any others??? First/Last Entity, Scope_Depth???)
6519
6520   --  E_Protected_Object
6521
6522   --  E_Protected_Type
6523   --  E_Protected_Subtype
6524   --    Direct_Primitive_Operations         (Elist10)
6525   --    First_Private_Entity                (Node16)
6526   --    First_Entity                        (Node17)
6527   --    Corresponding_Record_Type           (Node18)
6528   --    Entry_Bodies_Array                  (Node19)
6529   --    Last_Entity                         (Node20)
6530   --    Discriminant_Constraint             (Elist21)
6531   --    Scope_Depth_Value                   (Uint22)
6532   --    Stored_Constraint                   (Elist23)
6533   --    Anonymous_Object                    (Node30)
6534   --    Contract                            (Node34)
6535   --    Entry_Max_Queue_Lengths_Array       (Node35)
6536   --    SPARK_Aux_Pragma                    (Node41)
6537   --    Ignore_SPARK_Mode_Pragmas           (Flag301)
6538   --    SPARK_Aux_Pragma_Inherited          (Flag266)
6539   --    Uses_Lock_Free                      (Flag188)
6540   --    First_Component                     (synth)
6541   --    First_Component_Or_Discriminant     (synth)
6542   --    Has_Entries                         (synth)
6543   --    Has_Interrupt_Handler               (synth)
6544   --    Number_Entries                      (synth)
6545   --    Scope_Depth                         (synth)
6546   --    (plus type attributes)
6547
6548   --  E_Record_Type
6549   --  E_Record_Subtype
6550   --    Direct_Primitive_Operations         (Elist10)
6551   --    Access_Disp_Table                   (Elist16)  (base type only)
6552   --    Cloned_Subtype                      (Node16)   (subtype case only)
6553   --    First_Entity                        (Node17)
6554   --    Corresponding_Concurrent_Type       (Node18)
6555   --    Parent_Subtype                      (Node19)   (base type only)
6556   --    Last_Entity                         (Node20)
6557   --    Discriminant_Constraint             (Elist21)
6558   --    Corresponding_Remote_Type           (Node22)
6559   --    Stored_Constraint                   (Elist23)
6560   --    Interfaces                          (Elist25)
6561   --    Dispatch_Table_Wrappers             (Elist26)  (base type only)
6562   --    Underlying_Record_View              (Node28)   (base type only)
6563   --    Access_Disp_Table_Elab_Flag         (Node30)   (base type only)
6564   --    Component_Alignment                 (special)  (base type only)
6565   --    C_Pass_By_Copy                      (Flag125)  (base type only)
6566   --    Has_Dispatch_Table                  (Flag220)  (base tagged type only)
6567   --    Has_Pragma_Pack                     (Flag121)  (impl base type only)
6568   --    Has_Private_Ancestor                (Flag151)
6569   --    Has_Private_Extension               (Flag300)
6570   --    Has_Record_Rep_Clause               (Flag65)   (base type only)
6571   --    Has_Static_Discriminants            (Flag211)  (subtype only)
6572   --    Is_Class_Wide_Equivalent_Type       (Flag35)
6573   --    Is_Concurrent_Record_Type           (Flag20)
6574   --    Is_Constrained                      (Flag12)
6575   --    Is_Controlled_Active                (Flag42)   (base type only)
6576   --    Is_Interface                        (Flag186)
6577   --    Is_Limited_Interface                (Flag197)
6578   --    No_Reordering                       (Flag239)  (base type only)
6579   --    Reverse_Bit_Order                   (Flag164)  (base type only)
6580   --    Reverse_Storage_Order               (Flag93)   (base type only)
6581   --    SSO_Set_High_By_Default             (Flag273)  (base type only)
6582   --    SSO_Set_Low_By_Default              (Flag272)  (base type only)
6583   --    First_Component                     (synth)
6584   --    First_Component_Or_Discriminant     (synth)
6585   --    (plus type attributes)
6586
6587   --  E_Record_Type_With_Private
6588   --  E_Record_Subtype_With_Private
6589   --    Direct_Primitive_Operations         (Elist10)
6590   --    First_Entity                        (Node17)
6591   --    Private_Dependents                  (Elist18)
6592   --    Underlying_Full_View                (Node19)
6593   --    Last_Entity                         (Node20)
6594   --    Discriminant_Constraint             (Elist21)
6595   --    Private_View                        (Node22)
6596   --    Stored_Constraint                   (Elist23)
6597   --    Interfaces                          (Elist25)
6598   --    Has_Completion                      (Flag26)
6599   --    Has_Private_Ancestor                (Flag151)
6600   --    Has_Private_Extension               (Flag300)
6601   --    Has_Record_Rep_Clause               (Flag65)   (base type only)
6602   --    Is_Concurrent_Record_Type           (Flag20)
6603   --    Is_Constrained                      (Flag12)
6604   --    Is_Controlled_Active                (Flag42)   (base type only)
6605   --    Is_Interface                        (Flag186)
6606   --    Is_Limited_Interface                (Flag197)
6607   --    No_Reordering                       (Flag239)  (base type only)
6608   --    Reverse_Bit_Order                   (Flag164)  (base type only)
6609   --    Reverse_Storage_Order               (Flag93)   (base type only)
6610   --    SSO_Set_High_By_Default             (Flag273)  (base type only)
6611   --    SSO_Set_Low_By_Default              (Flag272)  (base type only)
6612   --    First_Component                     (synth)
6613   --    First_Component_Or_Discriminant     (synth)
6614   --    (plus type attributes)
6615
6616   --  E_Return_Statement
6617   --    Return_Applies_To                   (Node8)
6618
6619   --  E_Signed_Integer_Type
6620   --  E_Signed_Integer_Subtype
6621   --    Default_Aspect_Value                (Node19)   (base type only)
6622   --    Scalar_Range                        (Node20)
6623   --    Static_Discrete_Predicate           (List25)
6624   --    Has_Biased_Representation           (Flag139)
6625   --    Has_Shift_Operator                  (Flag267)  (base type only)
6626   --    No_Predicate_On_Actual              (Flag275)
6627   --    No_Dynamic_Predicate_On_Actual      (Flag276)
6628   --    Type_Low_Bound                      (synth)
6629   --    Type_High_Bound                     (synth)
6630   --    (plus type attributes)
6631
6632   --  E_String_Literal_Subtype
6633   --    String_Literal_Length               (Uint16)
6634   --    First_Index                         (Node17)   (always Empty)
6635   --    String_Literal_Low_Bound            (Node18)
6636   --    Packed_Array_Impl_Type              (Node23)
6637   --    (plus type attributes)
6638
6639   --  E_Subprogram_Body
6640   --    Mechanism                           (Uint8)
6641   --    First_Entity                        (Node17)
6642   --    Corresponding_Protected_Entry       (Node18)
6643   --    Last_Entity                         (Node20)
6644   --    Scope_Depth_Value                   (Uint22)
6645   --    Extra_Formals                       (Node28)
6646   --    Anonymous_Masters                   (Elist29)
6647   --    Contract                            (Node34)
6648   --    Nested_Scenarios                    (Elist36)
6649   --    SPARK_Pragma                        (Node40)
6650   --    Contains_Ignored_Ghost_Code         (Flag279)
6651   --    SPARK_Pragma_Inherited              (Flag265)
6652   --    Scope_Depth                         (synth)
6653
6654   --  E_Subprogram_Type
6655   --    Extra_Accessibility_Of_Result       (Node19)
6656   --    Directly_Designated_Type            (Node20)
6657   --    Extra_Formals                       (Node28)
6658   --    First_Formal                        (synth)
6659   --    First_Formal_With_Extras            (synth)
6660   --    Last_Formal                         (synth)
6661   --    Number_Formals                      (synth)
6662   --    (plus type attributes)
6663
6664   --  E_Task_Body
6665   --    Contract                            (Node34)
6666   --    SPARK_Pragma                        (Node40)
6667   --    Ignore_SPARK_Mode_Pragmas           (Flag301)
6668   --    SPARK_Pragma_Inherited              (Flag265)
6669   --    (any others??? First/Last Entity, Scope_Depth???)
6670
6671   --  E_Task_Type
6672   --  E_Task_Subtype
6673   --    Direct_Primitive_Operations         (Elist10)
6674   --    First_Private_Entity                (Node16)
6675   --    First_Entity                        (Node17)
6676   --    Corresponding_Record_Type           (Node18)
6677   --    Last_Entity                         (Node20)
6678   --    Discriminant_Constraint             (Elist21)
6679   --    Scope_Depth_Value                   (Uint22)
6680   --    Stored_Constraint                   (Elist23)
6681   --    Task_Body_Procedure                 (Node25)
6682   --    Storage_Size_Variable               (Node26)   (base type only)
6683   --    Relative_Deadline_Variable          (Node28)   (base type only)
6684   --    Anonymous_Object                    (Node30)
6685   --    Contract                            (Node34)
6686   --    SPARK_Aux_Pragma                    (Node41)
6687   --    Delay_Cleanups                      (Flag114)
6688   --    Has_Master_Entity                   (Flag21)
6689   --    Has_Storage_Size_Clause             (Flag23)   (base type only)
6690   --    Ignore_SPARK_Mode_Pragmas           (Flag301)
6691   --    Is_Elaboration_Checks_OK_Id         (Flag148)
6692   --    SPARK_Aux_Pragma_Inherited          (Flag266)
6693   --    First_Component                     (synth)
6694   --    First_Component_Or_Discriminant     (synth)
6695   --    Has_Entries                         (synth)
6696   --    Number_Entries                      (synth)
6697   --    Scope_Depth                         (synth)
6698   --    (plus type attributes)
6699
6700   --  E_Variable
6701   --    Hiding_Loop_Variable                (Node8)
6702   --    Current_Value                       (Node9)
6703   --    Part_Of_Constituents                (Elist10)
6704   --    Part_Of_References                  (Elist11)
6705   --    Esize                               (Uint12)
6706   --    Extra_Accessibility                 (Node13)
6707   --    Alignment                           (Uint14)
6708   --    Status_Flag_Or_Transient_Decl       (Node15)   (transient object only)
6709   --    Unset_Reference                     (Node16)
6710   --    Actual_Subtype                      (Node17)
6711   --    Renamed_Object                      (Node18)
6712   --    Size_Check_Code                     (Node19)
6713   --    Prival_Link                         (Node20)
6714   --    Interface_Name                      (Node21)
6715   --    Shared_Var_Procs_Instance           (Node22)
6716   --    Extra_Constrained                   (Node23)
6717   --    Related_Expression                  (Node24)
6718   --    Debug_Renaming_Link                 (Node25)
6719   --    Last_Assignment                     (Node26)
6720   --    Related_Type                        (Node27)
6721   --    Initialization_Statements           (Node28)
6722   --    BIP_Initialization_Call             (Node29)
6723   --    Last_Aggregate_Assignment           (Node30)
6724   --    Activation_Record_Component         (Node31)
6725   --    Encapsulating_State                 (Node32)
6726   --    Linker_Section_Pragma               (Node33)
6727   --    Contract                            (Node34)
6728   --    Anonymous_Designated_Type           (Node35)
6729   --    Validated_Object                    (Node36)
6730   --    SPARK_Pragma                        (Node40)
6731   --    Has_Alignment_Clause                (Flag46)
6732   --    Has_Atomic_Components               (Flag86)
6733   --    Has_Biased_Representation           (Flag139)
6734   --    Has_Independent_Components          (Flag34)
6735   --    Has_Initial_Value                   (Flag219)
6736   --    Has_Size_Clause                     (Flag29)
6737   --    Has_Volatile_Components             (Flag87)
6738   --    Is_Atomic                           (Flag85)
6739   --    Is_Elaboration_Checks_OK_Id         (Flag148)
6740   --    Is_Eliminated                       (Flag124)
6741   --    Is_Finalized_Transient              (Flag252)
6742   --    Is_Ignored_Transient                (Flag295)
6743   --    Is_Independent                      (Flag268)
6744   --    Is_Return_Object                    (Flag209)
6745   --    Is_Safe_To_Reevaluate               (Flag249)
6746   --    Is_Shared_Passive                   (Flag60)
6747   --    Is_True_Constant                    (Flag163)
6748   --    Is_Uplevel_Referenced_Entity        (Flag283)
6749   --    Is_Volatile                         (Flag16)
6750   --    Is_Volatile_Full_Access             (Flag285)
6751   --    OK_To_Rename                        (Flag247)
6752   --    Optimize_Alignment_Space            (Flag241)
6753   --    Optimize_Alignment_Time             (Flag242)
6754   --    SPARK_Pragma_Inherited              (Flag265)
6755   --    Suppress_Initialization             (Flag105)
6756   --    Treat_As_Volatile                   (Flag41)
6757   --    Address_Clause                      (synth)
6758   --    Alignment_Clause                    (synth)
6759   --    Is_Atomic_Or_VFA                    (synth)
6760   --    Size_Clause                         (synth)
6761
6762   --  E_Void
6763   --    Since E_Void is the initial Ekind value of an entity when it is first
6764   --    created, one might expect that no attributes would be defined on such
6765   --    an entity until its Ekind field is set. However, in practice, there
6766   --    are many instances in which fields of an E_Void entity are set in the
6767   --    code prior to setting the Ekind field. This is not well documented or
6768   --    well controlled, and needs cleaning up later. Meanwhile, the access
6769   --    procedures in the body of Einfo permit many, but not all, attributes
6770   --    to be applied to an E_Void entity, precisely so that this kind of
6771   --    pre-setting of attributes works. This is really a hole in the dynamic
6772   --    type checking, since there is no assurance that the eventual Ekind
6773   --    value will be appropriate for the attributes set, and the consequence
6774   --    is that the dynamic type checking in the Einfo body is unnecessarily
6775   --    weak. To be looked at systematically some time ???
6776
6777   ---------------------------------
6778   -- Component_Alignment Control --
6779   ---------------------------------
6780
6781   --  There are four types of alignment possible for array and record
6782   --  types, and a field in the type entities contains a value of the
6783   --  following type indicating which alignment choice applies. For full
6784   --  details of the meaning of these alignment types, see description
6785   --  of the Component_Alignment pragma.
6786
6787   type Component_Alignment_Kind is (
6788      Calign_Default,          -- default alignment
6789      Calign_Component_Size,   -- natural alignment for component size
6790      Calign_Component_Size_4, -- natural for size <= 4, 4 for size >= 4
6791      Calign_Storage_Unit);    -- all components byte aligned
6792
6793   -----------------------------------
6794   -- Floating Point Representation --
6795   -----------------------------------
6796
6797   type Float_Rep_Kind is (
6798      IEEE_Binary,  -- IEEE 754p conforming binary format
6799      AAMP);        -- AAMP format
6800
6801   ---------------
6802   -- Iterators --
6803   ---------------
6804
6805   --  In addition to attributes that are stored as plain data, other
6806   --  attributes are procedural, and require some small amount of
6807   --  computation. Of course, from the point of view of a user of this
6808   --  package, the distinction is not visible (even the field information
6809   --  provided below should be disregarded, as it is subject to change
6810   --  without notice). A number of attributes appear as lists: lists of
6811   --  formals, lists of actuals, of discriminants, etc. For these, pairs
6812   --  of functions are defined, which take the form:
6813
6814   --      function First_Thing (E : Enclosing_Construct) return Thing;
6815   --      function Next_Thing (T : Thing) return Thing;
6816
6817   --  The end of iteration is always signaled by a value of Empty, so that
6818   --  loops over these chains invariably have the form:
6819
6820   --      This : Thing;
6821   --      ...
6822   --      This := First_Thing (E);
6823
6824   --      while Present (This) loop
6825   --         Do_Something_With (This);
6826   --        ...
6827   --        This := Next_Thing (This);
6828   --      end loop;
6829
6830   -----------------------------------
6831   -- Handling of Check Suppression --
6832   -----------------------------------
6833
6834   --  There are three ways that checks can be suppressed:
6835
6836   --    1.  At the command line level
6837   --    2.  At the scope level.
6838   --    3.  At the entity level.
6839
6840   --  See spec of Sem in sem.ads for details of the data structures used
6841   --  to keep track of these various methods for suppressing checks.
6842
6843   -------------------------------
6844   -- Handling of Discriminants --
6845   -------------------------------
6846
6847   --  During semantic processing, discriminants are separate entities which
6848   --  reflect the semantic properties and allowed usage of discriminants in
6849   --  the language.
6850
6851   --  In the case of discriminants used as bounds, the references are handled
6852   --  directly, since special processing is needed in any case. However, there
6853   --  are two circumstances in which discriminants are referenced in a quite
6854   --  general manner, like any other variables:
6855
6856   --     In initialization expressions for records. Note that the expressions
6857   --     used in Priority, Storage_Size, Task_Info and Relative_Deadline
6858   --     pragmas are effectively in this category, since these pragmas are
6859   --     converted to initialized record fields in the Corresponding_Record_
6860   --     Type.
6861
6862   --     In task and protected bodies, where the discriminant values may be
6863   --     referenced freely within these bodies. Discriminants can also appear
6864   --     in bounds of entry families and in defaults of operations.
6865
6866   --  In both these cases, the discriminants must be treated essentially as
6867   --  objects. The following approach is used to simplify and minimize the
6868   --  special processing that is required.
6869
6870   --  When a record type with discriminants is analyzed, semantic processing
6871   --  creates the entities for the discriminants. It also creates additional
6872   --  sets of entities called discriminals, one for each of the discriminants,
6873   --  and the Discriminal field of the discriminant entity points to this
6874   --  additional entity, which is initially created as an uninitialized
6875   --  (E_Void) entity.
6876
6877   --  During expansion of expressions, any discriminant reference is replaced
6878   --  by a reference to the corresponding discriminal. When the initialization
6879   --  procedure for the record is created (there will always be one, since
6880   --  discriminants are present, see Exp_Ch3 for further details), the
6881   --  discriminals are used as the entities for the formal parameters of
6882   --  this initialization procedure. The references to these discriminants
6883   --  have already been replaced by references to these discriminals, which
6884   --  are now the formal parameters corresponding to the required objects.
6885
6886   --  In the case of a task or protected body, the semantics similarly creates
6887   --  a set of discriminals for the discriminants of the task or protected
6888   --  type. When the procedure is created for the task body, the parameter
6889   --  passed in is a reference to the task value type, which contains the
6890   --  required discriminant values. The expander creates a set of declarations
6891   --  of the form:
6892
6893   --      discr_nameD : constant discr_type renames _task.discr_name;
6894
6895   --  where discr_nameD is the discriminal entity referenced by the task
6896   --  discriminant, and _task is the task value passed in as the parameter.
6897   --  Again, any references to discriminants in the task body have been
6898   --  replaced by the discriminal reference, which is now an object that
6899   --  contains the required value.
6900
6901   --  This approach for tasks means that two sets of discriminals are needed
6902   --  for a task type, one for the initialization procedure, and one for the
6903   --  task body. This works out nicely, since the semantics allocates one set
6904   --  for the task itself, and one set for the corresponding record.
6905
6906   --  The one bit of trickiness arises in making sure that the right set of
6907   --  discriminals is used at the right time. First the task definition is
6908   --  processed. Any references to discriminants here are replaced by the
6909   --  corresponding *task* discriminals (the record type doesn't even exist
6910   --  yet, since it is constructed as part of the expansion of the task
6911   --  declaration, which happens after the semantic processing of the task
6912   --  definition). The discriminants to be used for the corresponding record
6913   --  are created at the same time as the other discriminals, and held in the
6914   --  CR_Discriminant field of the discriminant. A use of the discriminant in
6915   --  a bound for an entry family is replaced with the CR_Discriminant because
6916   --  it controls the bound of the entry queue array which is a component of
6917   --  the corresponding record.
6918
6919   --  Just before the record initialization routine is constructed, the
6920   --  expander exchanges the task and record discriminals. This has two
6921   --  effects. First the generation of the record initialization routine
6922   --  uses the discriminals that are now on the record, which is the set
6923   --  that used to be on the task, which is what we want.
6924
6925   --  Second, a new set of (so far unused) discriminals is now on the task
6926   --  discriminants, and it is this set that will be used for expanding the
6927   --  task body, and also for the discriminal declarations at the start of
6928   --  the task body.
6929
6930   ---------------------------------------------------
6931   -- Handling of private data in protected objects --
6932   ---------------------------------------------------
6933
6934   --  Private components in protected types pose problems similar to those
6935   --  of discriminants. Private data is visible and can be directly referenced
6936   --  from protected bodies. However, when protected entries and subprograms
6937   --  are expanded into corresponding bodies and barrier functions, private
6938   --  components lose their original context and visibility.
6939
6940   --  To remedy this side effect of expansion, private components are expanded
6941   --  into renamings called "privals", by analogy with "discriminals".
6942
6943   --     private_comp : comp_type renames _object.private_comp;
6944
6945   --  Prival declarations are inserted during the analysis of subprogram and
6946   --  entry bodies to ensure proper visibility for any subsequent expansion.
6947   --  _Object is the formal parameter of the generated corresponding body or
6948   --  a local renaming which denotes the protected object obtained from entry
6949   --  parameter _O. Privals receive minimal decoration upon creation and are
6950   --  categorized as either E_Variable for the general case or E_Constant when
6951   --  they appear in functions.
6952
6953   --  Along with the local declarations, each private component carries a
6954   --  placeholder which references the prival entity in the current body. This
6955   --  form of indirection is used to resolve name clashes of privals and other
6956   --  locally visible entities such as parameters, local objects, entry family
6957   --  indexes or identifiers used in the barrier condition.
6958
6959   --  When analyzing the statements of a protected subprogram or entry, any
6960   --  reference to a private component must resolve to the locally declared
6961   --  prival through normal visibility. In case of name conflicts (the cases
6962   --  above), the prival is marked as hidden and acts as a weakly declared
6963   --  entity. As a result, the reference points to the correct entity. When a
6964   --  private component is denoted by an expanded name (prot_type.comp for
6965   --  example), the expansion mechanism uses the placeholder of the component
6966   --  to correct the Entity and Etype of the reference.
6967
6968   -------------------
6969   -- Type Synonyms --
6970   -------------------
6971
6972   --  The following type synonyms are used to tidy up the function and
6973   --  procedure declarations that follow, and also to make it possible to meet
6974   --  the requirement for the XEINFO utility that all function specs must fit
6975   --  on a single source line.
6976
6977   subtype B is Boolean;
6978   subtype C is Component_Alignment_Kind;
6979   subtype E is Entity_Id;
6980   subtype F is Float_Rep_Kind;
6981   subtype M is Mechanism_Type;
6982   subtype N is Node_Id;
6983   subtype U is Uint;
6984   subtype R is Ureal;
6985   subtype L is Elist_Id;
6986   subtype S is List_Id;
6987
6988   --------------------------------
6989   -- Attribute Access Functions --
6990   --------------------------------
6991
6992   --  All attributes are manipulated through a procedural interface. This
6993   --  section contains the functions used to obtain attribute values which
6994   --  correspond to values in fields or flags in the entity itself.
6995
6996   function Abstract_States                     (Id : E) return L;
6997   function Accept_Address                      (Id : E) return L;
6998   function Access_Disp_Table                   (Id : E) return L;
6999   function Access_Disp_Table_Elab_Flag         (Id : E) return E;
7000   function Activation_Record_Component         (Id : E) return E;
7001   function Actual_Subtype                      (Id : E) return E;
7002   function Address_Taken                       (Id : E) return B;
7003   function Alias                               (Id : E) return E;
7004   function Alignment                           (Id : E) return U;
7005   function Anonymous_Designated_Type           (Id : E) return E;
7006   function Anonymous_Masters                   (Id : E) return L;
7007   function Anonymous_Object                    (Id : E) return E;
7008   function Associated_Entity                   (Id : E) return E;
7009   function Associated_Formal_Package           (Id : E) return E;
7010   function Associated_Node_For_Itype           (Id : E) return N;
7011   function Associated_Storage_Pool             (Id : E) return E;
7012   function Barrier_Function                    (Id : E) return N;
7013   function BIP_Initialization_Call             (Id : E) return N;
7014   function Block_Node                          (Id : E) return N;
7015   function Body_Entity                         (Id : E) return E;
7016   function Body_Needed_For_SAL                 (Id : E) return B;
7017   function Body_Needed_For_Inlining            (Id : E) return B;
7018   function Body_References                     (Id : E) return L;
7019   function C_Pass_By_Copy                      (Id : E) return B;
7020   function Can_Never_Be_Null                   (Id : E) return B;
7021   function Can_Use_Internal_Rep                (Id : E) return B;
7022   function Checks_May_Be_Suppressed            (Id : E) return B;
7023   function Class_Wide_Clone                     (Id : E) return E;
7024   function Class_Wide_Type                     (Id : E) return E;
7025   function Cloned_Subtype                      (Id : E) return E;
7026   function Component_Alignment                 (Id : E) return C;
7027   function Component_Bit_Offset                (Id : E) return U;
7028   function Component_Clause                    (Id : E) return N;
7029   function Component_Size                      (Id : E) return U;
7030   function Component_Type                      (Id : E) return E;
7031   function Contains_Ignored_Ghost_Code         (Id : E) return B;
7032   function Contract                            (Id : E) return N;
7033   function Contract_Wrapper                    (Id : E) return E;
7034   function Corresponding_Concurrent_Type       (Id : E) return E;
7035   function Corresponding_Discriminant          (Id : E) return E;
7036   function Corresponding_Equality              (Id : E) return E;
7037   function Corresponding_Function              (Id : E) return E;
7038   function Corresponding_Procedure             (Id : E) return E;
7039   function Corresponding_Protected_Entry       (Id : E) return E;
7040   function Corresponding_Record_Component      (Id : E) return E;
7041   function Corresponding_Record_Type           (Id : E) return E;
7042   function Corresponding_Remote_Type           (Id : E) return E;
7043   function CR_Discriminant                     (Id : E) return E;
7044   function Current_Use_Clause                  (Id : E) return E;
7045   function Current_Value                       (Id : E) return N;
7046   function Debug_Info_Off                      (Id : E) return B;
7047   function Debug_Renaming_Link                 (Id : E) return E;
7048   function Default_Aspect_Component_Value      (Id : E) return N;
7049   function Default_Aspect_Value                (Id : E) return N;
7050   function Default_Expr_Function               (Id : E) return E;
7051   function Default_Expressions_Processed       (Id : E) return B;
7052   function Default_Value                       (Id : E) return N;
7053   function Delay_Cleanups                      (Id : E) return B;
7054   function Delay_Subprogram_Descriptors        (Id : E) return B;
7055   function Delta_Value                         (Id : E) return R;
7056   function Dependent_Instances                 (Id : E) return L;
7057   function Depends_On_Private                  (Id : E) return B;
7058   function Derived_Type_Link                   (Id : E) return E;
7059   function Digits_Value                        (Id : E) return U;
7060   function Direct_Primitive_Operations         (Id : E) return L;
7061   function Directly_Designated_Type            (Id : E) return E;
7062   function Disable_Controlled                  (Id : E) return B;
7063   function Discard_Names                       (Id : E) return B;
7064   function Discriminal                         (Id : E) return E;
7065   function Discriminal_Link                    (Id : E) return E;
7066   function Discriminant_Checking_Func          (Id : E) return E;
7067   function Discriminant_Constraint             (Id : E) return L;
7068   function Discriminant_Default_Value          (Id : E) return N;
7069   function Discriminant_Number                 (Id : E) return U;
7070   function Dispatch_Table_Wrappers             (Id : E) return L;
7071   function DT_Entry_Count                      (Id : E) return U;
7072   function DT_Offset_To_Top_Func               (Id : E) return E;
7073   function DT_Position                         (Id : E) return U;
7074   function DTC_Entity                          (Id : E) return E;
7075   function Elaborate_Body_Desirable            (Id : E) return B;
7076   function Elaboration_Entity                  (Id : E) return E;
7077   function Elaboration_Entity_Required         (Id : E) return B;
7078   function Encapsulating_State                 (Id : E) return E;
7079   function Enclosing_Scope                     (Id : E) return E;
7080   function Entry_Accepted                      (Id : E) return B;
7081   function Entry_Bodies_Array                  (Id : E) return E;
7082   function Entry_Cancel_Parameter              (Id : E) return E;
7083   function Entry_Component                     (Id : E) return E;
7084   function Entry_Formal                        (Id : E) return E;
7085   function Entry_Index_Constant                (Id : E) return E;
7086   function Entry_Index_Type                    (Id : E) return E;
7087   function Entry_Max_Queue_Lengths_Array       (Id : E) return E;
7088   function Entry_Parameters_Type               (Id : E) return E;
7089   function Enum_Pos_To_Rep                     (Id : E) return E;
7090   function Enumeration_Pos                     (Id : E) return U;
7091   function Enumeration_Rep                     (Id : E) return U;
7092   function Enumeration_Rep_Expr                (Id : E) return N;
7093   function Equivalent_Type                     (Id : E) return E;
7094   function Esize                               (Id : E) return U;
7095   function Extra_Accessibility                 (Id : E) return E;
7096   function Extra_Accessibility_Of_Result       (Id : E) return E;
7097   function Extra_Constrained                   (Id : E) return E;
7098   function Extra_Formal                        (Id : E) return E;
7099   function Extra_Formals                       (Id : E) return E;
7100   function Finalization_Master                 (Id : E) return E;
7101   function Finalize_Storage_Only               (Id : E) return B;
7102   function Finalizer                           (Id : E) return E;
7103   function First_Entity                        (Id : E) return E;
7104   function First_Exit_Statement                (Id : E) return N;
7105   function First_Index                         (Id : E) return N;
7106   function First_Literal                       (Id : E) return E;
7107   function First_Private_Entity                (Id : E) return E;
7108   function First_Rep_Item                      (Id : E) return N;
7109   function Float_Rep                           (Id : E) return F;
7110   function Freeze_Node                         (Id : E) return N;
7111   function From_Limited_With                   (Id : E) return B;
7112   function Full_View                           (Id : E) return E;
7113   function Generic_Homonym                     (Id : E) return E;
7114   function Generic_Renamings                   (Id : E) return L;
7115   function Handler_Records                     (Id : E) return S;
7116   function Has_Aliased_Components              (Id : E) return B;
7117   function Has_Alignment_Clause                (Id : E) return B;
7118   function Has_All_Calls_Remote                (Id : E) return B;
7119   function Has_Atomic_Components               (Id : E) return B;
7120   function Has_Biased_Representation           (Id : E) return B;
7121   function Has_Completion                      (Id : E) return B;
7122   function Has_Completion_In_Body              (Id : E) return B;
7123   function Has_Complex_Representation          (Id : E) return B;
7124   function Has_Component_Size_Clause           (Id : E) return B;
7125   function Has_Constrained_Partial_View        (Id : E) return B;
7126   function Has_Contiguous_Rep                  (Id : E) return B;
7127   function Has_Controlled_Component            (Id : E) return B;
7128   function Has_Controlling_Result              (Id : E) return B;
7129   function Has_Convention_Pragma               (Id : E) return B;
7130   function Has_Default_Aspect                  (Id : E) return B;
7131   function Has_Delayed_Aspects                 (Id : E) return B;
7132   function Has_Delayed_Freeze                  (Id : E) return B;
7133   function Has_Delayed_Rep_Aspects             (Id : E) return B;
7134   function Has_DIC                             (Id : E) return B;
7135   function Has_Discriminants                   (Id : E) return B;
7136   function Has_Dispatch_Table                  (Id : E) return B;
7137   function Has_Dynamic_Predicate_Aspect        (Id : E) return B;
7138   function Has_Enumeration_Rep_Clause          (Id : E) return B;
7139   function Has_Exit                            (Id : E) return B;
7140   function Has_Expanded_Contract               (Id : E) return B;
7141   function Has_Forward_Instantiation           (Id : E) return B;
7142   function Has_Fully_Qualified_Name            (Id : E) return B;
7143   function Has_Gigi_Rep_Item                   (Id : E) return B;
7144   function Has_Homonym                         (Id : E) return B;
7145   function Has_Implicit_Dereference            (Id : E) return B;
7146   function Has_Independent_Components          (Id : E) return B;
7147   function Has_Inheritable_Invariants          (Id : E) return B;
7148   function Has_Inherited_DIC                   (Id : E) return B;
7149   function Has_Inherited_Invariants            (Id : E) return B;
7150   function Has_Initial_Value                   (Id : E) return B;
7151   function Has_Interrupt_Handler               (Id : E) return B;
7152   function Has_Invariants                      (Id : E) return B;
7153   function Has_Loop_Entry_Attributes           (Id : E) return B;
7154   function Has_Machine_Radix_Clause            (Id : E) return B;
7155   function Has_Master_Entity                   (Id : E) return B;
7156   function Has_Missing_Return                  (Id : E) return B;
7157   function Has_Nested_Block_With_Handler       (Id : E) return B;
7158   function Has_Nested_Subprogram               (Id : E) return B;
7159   function Has_Non_Standard_Rep                (Id : E) return B;
7160   function Has_Object_Size_Clause              (Id : E) return B;
7161   function Has_Out_Or_In_Out_Parameter         (Id : E) return B;
7162   function Has_Own_DIC                         (Id : E) return B;
7163   function Has_Own_Invariants                  (Id : E) return B;
7164   function Has_Partial_Visible_Refinement      (Id : E) return B;
7165   function Has_Per_Object_Constraint           (Id : E) return B;
7166   function Has_Pragma_Controlled               (Id : E) return B;
7167   function Has_Pragma_Elaborate_Body           (Id : E) return B;
7168   function Has_Pragma_Inline                   (Id : E) return B;
7169   function Has_Pragma_Inline_Always            (Id : E) return B;
7170   function Has_Pragma_No_Inline                (Id : E) return B;
7171   function Has_Pragma_Ordered                  (Id : E) return B;
7172   function Has_Pragma_Pack                     (Id : E) return B;
7173   function Has_Pragma_Preelab_Init             (Id : E) return B;
7174   function Has_Pragma_Pure                     (Id : E) return B;
7175   function Has_Pragma_Pure_Function            (Id : E) return B;
7176   function Has_Pragma_Thread_Local_Storage     (Id : E) return B;
7177   function Has_Pragma_Unmodified               (Id : E) return B;
7178   function Has_Pragma_Unreferenced             (Id : E) return B;
7179   function Has_Pragma_Unreferenced_Objects     (Id : E) return B;
7180   function Has_Pragma_Unused                   (Id : E) return B;
7181   function Has_Predicates                      (Id : E) return B;
7182   function Has_Primitive_Operations            (Id : E) return B;
7183   function Has_Private_Ancestor                (Id : E) return B;
7184   function Has_Private_Declaration             (Id : E) return B;
7185   function Has_Private_Extension               (Id : E) return B;
7186   function Has_Protected                       (Id : E) return B;
7187   function Has_Qualified_Name                  (Id : E) return B;
7188   function Has_RACW                            (Id : E) return B;
7189   function Has_Record_Rep_Clause               (Id : E) return B;
7190   function Has_Recursive_Call                  (Id : E) return B;
7191   function Has_Shift_Operator                  (Id : E) return B;
7192   function Has_Size_Clause                     (Id : E) return B;
7193   function Has_Small_Clause                    (Id : E) return B;
7194   function Has_Specified_Layout                (Id : E) return B;
7195   function Has_Specified_Stream_Input          (Id : E) return B;
7196   function Has_Specified_Stream_Output         (Id : E) return B;
7197   function Has_Specified_Stream_Read           (Id : E) return B;
7198   function Has_Specified_Stream_Write          (Id : E) return B;
7199   function Has_Static_Discriminants            (Id : E) return B;
7200   function Has_Static_Predicate                (Id : E) return B;
7201   function Has_Static_Predicate_Aspect         (Id : E) return B;
7202   function Has_Storage_Size_Clause             (Id : E) return B;
7203   function Has_Stream_Size_Clause              (Id : E) return B;
7204   function Has_Task                            (Id : E) return B;
7205   function Has_Timing_Event                    (Id : E) return B;
7206   function Has_Thunks                          (Id : E) return B;
7207   function Has_Unchecked_Union                 (Id : E) return B;
7208   function Has_Unknown_Discriminants           (Id : E) return B;
7209   function Has_Visible_Refinement              (Id : E) return B;
7210   function Has_Volatile_Components             (Id : E) return B;
7211   function Has_Xref_Entry                      (Id : E) return B;
7212   function Hiding_Loop_Variable                (Id : E) return E;
7213   function Homonym                             (Id : E) return E;
7214   function Ignore_SPARK_Mode_Pragmas           (Id : E) return B;
7215   function Import_Pragma                       (Id : E) return E;
7216   function Incomplete_Actuals                  (Id : E) return L;
7217   function In_Package_Body                     (Id : E) return B;
7218   function In_Private_Part                     (Id : E) return B;
7219   function In_Use                              (Id : E) return B;
7220   function Initialization_Statements           (Id : E) return N;
7221   function Inner_Instances                     (Id : E) return L;
7222   function Interface_Alias                     (Id : E) return E;
7223   function Interface_Name                      (Id : E) return N;
7224   function Interfaces                          (Id : E) return L;
7225   function Is_Abstract_Subprogram              (Id : E) return B;
7226   function Is_Abstract_Type                    (Id : E) return B;
7227   function Is_Access_Constant                  (Id : E) return B;
7228   function Is_Actual_Subtype                   (Id : E) return B;
7229   function Is_Ada_2005_Only                    (Id : E) return B;
7230   function Is_Ada_2012_Only                    (Id : E) return B;
7231   function Is_Aliased                          (Id : E) return B;
7232   function Is_Asynchronous                     (Id : E) return B;
7233   function Is_Atomic                           (Id : E) return B;
7234   function Is_Atomic_Or_VFA                    (Id : E) return B;
7235   function Is_Bit_Packed_Array                 (Id : E) return B;
7236   function Is_Called                           (Id : E) return B;
7237   function Is_Character_Type                   (Id : E) return B;
7238   function Is_Checked_Ghost_Entity             (Id : E) return B;
7239   function Is_Child_Unit                       (Id : E) return B;
7240   function Is_Class_Wide_Clone                 (Id : E) return B;
7241   function Is_Class_Wide_Equivalent_Type       (Id : E) return B;
7242   function Is_Compilation_Unit                 (Id : E) return B;
7243   function Is_Completely_Hidden                (Id : E) return B;
7244   function Is_Constr_Subt_For_U_Nominal        (Id : E) return B;
7245   function Is_Constr_Subt_For_UN_Aliased       (Id : E) return B;
7246   function Is_Constrained                      (Id : E) return B;
7247   function Is_Constructor                      (Id : E) return B;
7248   function Is_Controlled_Active                (Id : E) return B;
7249   function Is_Controlling_Formal               (Id : E) return B;
7250   function Is_CPP_Class                        (Id : E) return B;
7251   function Is_Descendant_Of_Address            (Id : E) return B;
7252   function Is_DIC_Procedure                    (Id : E) return B;
7253   function Is_Discrim_SO_Function              (Id : E) return B;
7254   function Is_Discriminant_Check_Function      (Id : E) return B;
7255   function Is_Dispatch_Table_Entity            (Id : E) return B;
7256   function Is_Dispatching_Operation            (Id : E) return B;
7257   function Is_Elaboration_Checks_OK_Id         (Id : E) return B;
7258   function Is_Eliminated                       (Id : E) return B;
7259   function Is_Entry_Formal                     (Id : E) return B;
7260   function Is_Entry_Wrapper                    (Id : E) return B;
7261   function Is_Exception_Handler                (Id : E) return B;
7262   function Is_Exported                         (Id : E) return B;
7263   function Is_Finalized_Transient              (Id : E) return B;
7264   function Is_First_Subtype                    (Id : E) return B;
7265   function Is_For_Access_Subtype               (Id : E) return B;
7266   function Is_Frozen                           (Id : E) return B;
7267   function Is_Generic_Instance                 (Id : E) return B;
7268   function Is_Hidden                           (Id : E) return B;
7269   function Is_Hidden_Non_Overridden_Subpgm     (Id : E) return B;
7270   function Is_Hidden_Open_Scope                (Id : E) return B;
7271   function Is_Ignored_Ghost_Entity             (Id : E) return B;
7272   function Is_Ignored_Transient                (Id : E) return B;
7273   function Is_Immediately_Visible              (Id : E) return B;
7274   function Is_Implementation_Defined           (Id : E) return B;
7275   function Is_Imported                         (Id : E) return B;
7276   function Is_Independent                      (Id : E) return B;
7277   function Is_Initial_Condition_Procedure      (Id : E) return B;
7278   function Is_Inlined                          (Id : E) return B;
7279   function Is_Inlined_Always                   (Id : E) return B;
7280   function Is_Instantiated                     (Id : E) return B;
7281   function Is_Interface                        (Id : E) return B;
7282   function Is_Internal                         (Id : E) return B;
7283   function Is_Interrupt_Handler                (Id : E) return B;
7284   function Is_Intrinsic_Subprogram             (Id : E) return B;
7285   function Is_Invariant_Procedure              (Id : E) return B;
7286   function Is_Itype                            (Id : E) return B;
7287   function Is_Known_Non_Null                   (Id : E) return B;
7288   function Is_Known_Null                       (Id : E) return B;
7289   function Is_Known_Valid                      (Id : E) return B;
7290   function Is_Limited_Composite                (Id : E) return B;
7291   function Is_Limited_Interface                (Id : E) return B;
7292   function Is_Local_Anonymous_Access           (Id : E) return B;
7293   function Is_Machine_Code_Subprogram          (Id : E) return B;
7294   function Is_Non_Static_Subtype               (Id : E) return B;
7295   function Is_Null_Init_Proc                   (Id : E) return B;
7296   function Is_Obsolescent                      (Id : E) return B;
7297   function Is_Only_Out_Parameter               (Id : E) return B;
7298   function Is_Package_Body_Entity              (Id : E) return B;
7299   function Is_Packed                           (Id : E) return B;
7300   function Is_Packed_Array_Impl_Type           (Id : E) return B;
7301   function Is_Potentially_Use_Visible          (Id : E) return B;
7302   function Is_Param_Block_Component_Type       (Id : E) return B;
7303   function Is_Partial_Invariant_Procedure      (Id : E) return B;
7304   function Is_Predicate_Function               (Id : E) return B;
7305   function Is_Predicate_Function_M             (Id : E) return B;
7306   function Is_Preelaborated                    (Id : E) return B;
7307   function Is_Primitive                        (Id : E) return B;
7308   function Is_Primitive_Wrapper                (Id : E) return B;
7309   function Is_Private_Composite                (Id : E) return B;
7310   function Is_Private_Descendant               (Id : E) return B;
7311   function Is_Private_Primitive                (Id : E) return B;
7312   function Is_Public                           (Id : E) return B;
7313   function Is_Pure                             (Id : E) return B;
7314   function Is_Pure_Unit_Access_Type            (Id : E) return B;
7315   function Is_RACW_Stub_Type                   (Id : E) return B;
7316   function Is_Raised                           (Id : E) return B;
7317   function Is_Remote_Call_Interface            (Id : E) return B;
7318   function Is_Remote_Types                     (Id : E) return B;
7319   function Is_Renaming_Of_Object               (Id : E) return B;
7320   function Is_Return_Object                    (Id : E) return B;
7321   function Is_Safe_To_Reevaluate               (Id : E) return B;
7322   function Is_Shared_Passive                   (Id : E) return B;
7323   function Is_Static_Type                      (Id : E) return B;
7324   function Is_Statically_Allocated             (Id : E) return B;
7325   function Is_Tag                              (Id : E) return B;
7326   function Is_Tagged_Type                      (Id : E) return B;
7327   function Is_Thunk                            (Id : E) return B;
7328   function Is_Trivial_Subprogram               (Id : E) return B;
7329   function Is_True_Constant                    (Id : E) return B;
7330   function Is_Unchecked_Union                  (Id : E) return B;
7331   function Is_Underlying_Full_View             (Id : E) return B;
7332   function Is_Underlying_Record_View           (Id : E) return B;
7333   function Is_Unimplemented                    (Id : E) return B;
7334   function Is_Unsigned_Type                    (Id : E) return B;
7335   function Is_Uplevel_Referenced_Entity        (Id : E) return B;
7336   function Is_Valued_Procedure                 (Id : E) return B;
7337   function Is_Visible_Formal                   (Id : E) return B;
7338   function Is_Visible_Lib_Unit                 (Id : E) return B;
7339   function Is_Volatile                         (Id : E) return B;
7340   function Is_Volatile_Full_Access             (Id : E) return B;
7341   function Itype_Printed                       (Id : E) return B;
7342   function Kill_Elaboration_Checks             (Id : E) return B;
7343   function Kill_Range_Checks                   (Id : E) return B;
7344   function Known_To_Have_Preelab_Init          (Id : E) return B;
7345   function Last_Aggregate_Assignment           (Id : E) return N;
7346   function Last_Assignment                     (Id : E) return N;
7347   function Last_Entity                         (Id : E) return E;
7348   function Limited_View                        (Id : E) return E;
7349   function Linker_Section_Pragma               (Id : E) return N;
7350   function Lit_Indexes                         (Id : E) return E;
7351   function Lit_Strings                         (Id : E) return E;
7352   function Low_Bound_Tested                    (Id : E) return B;
7353   function Machine_Radix_10                    (Id : E) return B;
7354   function Master_Id                           (Id : E) return E;
7355   function Materialize_Entity                  (Id : E) return B;
7356   function May_Inherit_Delayed_Rep_Aspects     (Id : E) return B;
7357   function Mechanism                           (Id : E) return M;
7358   function Modulus                             (Id : E) return U;
7359   function Must_Be_On_Byte_Boundary            (Id : E) return B;
7360   function Must_Have_Preelab_Init              (Id : E) return B;
7361   function Needs_Debug_Info                    (Id : E) return B;
7362   function Needs_No_Actuals                    (Id : E) return B;
7363   function Nested_Scenarios                    (Id : E) return L;
7364   function Never_Set_In_Source                 (Id : E) return B;
7365   function Next_Inlined_Subprogram             (Id : E) return E;
7366   function No_Dynamic_Predicate_On_Actual      (Id : E) return B;
7367   function No_Pool_Assigned                    (Id : E) return B;
7368   function No_Predicate_On_Actual              (Id : E) return B;
7369   function No_Reordering                       (Id : E) return B;
7370   function No_Return                           (Id : E) return B;
7371   function No_Strict_Aliasing                  (Id : E) return B;
7372   function No_Tagged_Streams_Pragma            (Id : E) return N;
7373   function Non_Binary_Modulus                  (Id : E) return B;
7374   function Non_Limited_View                    (Id : E) return E;
7375   function Nonzero_Is_True                     (Id : E) return B;
7376   function Normalized_First_Bit                (Id : E) return U;
7377   function Normalized_Position                 (Id : E) return U;
7378   function Normalized_Position_Max             (Id : E) return U;
7379   function OK_To_Rename                        (Id : E) return B;
7380   function Optimize_Alignment_Space            (Id : E) return B;
7381   function Optimize_Alignment_Time             (Id : E) return B;
7382   function Original_Access_Type                (Id : E) return E;
7383   function Original_Array_Type                 (Id : E) return E;
7384   function Original_Protected_Subprogram       (Id : E) return N;
7385   function Original_Record_Component           (Id : E) return E;
7386   function Overlays_Constant                   (Id : E) return B;
7387   function Overridden_Operation                (Id : E) return E;
7388   function Package_Instantiation               (Id : E) return N;
7389   function Packed_Array_Impl_Type              (Id : E) return E;
7390   function Parent_Subtype                      (Id : E) return E;
7391   function Part_Of_Constituents                (Id : E) return L;
7392   function Part_Of_References                  (Id : E) return L;
7393   function Partial_View_Has_Unknown_Discr      (Id : E) return B;
7394   function Pending_Access_Types                (Id : E) return L;
7395   function Postconditions_Proc                 (Id : E) return E;
7396   function Predicates_Ignored                  (Id : E) return B;
7397   function Prival                              (Id : E) return E;
7398   function Prival_Link                         (Id : E) return E;
7399   function Private_Dependents                  (Id : E) return L;
7400   function Private_View                        (Id : E) return N;
7401   function Protected_Body_Subprogram           (Id : E) return E;
7402   function Protected_Formal                    (Id : E) return E;
7403   function Protected_Subprogram                (Id : E) return N;
7404   function Protection_Object                   (Id : E) return E;
7405   function Reachable                           (Id : E) return B;
7406   function Receiving_Entry                     (Id : E) return E;
7407   function Referenced                          (Id : E) return B;
7408   function Referenced_As_LHS                   (Id : E) return B;
7409   function Referenced_As_Out_Parameter         (Id : E) return B;
7410   function Refinement_Constituents             (Id : E) return L;
7411   function Register_Exception_Call             (Id : E) return N;
7412   function Related_Array_Object                (Id : E) return E;
7413   function Related_Expression                  (Id : E) return N;
7414   function Related_Instance                    (Id : E) return E;
7415   function Related_Type                        (Id : E) return E;
7416   function Relative_Deadline_Variable          (Id : E) return E;
7417   function Renamed_Entity                      (Id : E) return N;
7418   function Renamed_In_Spec                     (Id : E) return B;
7419   function Renamed_Object                      (Id : E) return N;
7420   function Renaming_Map                        (Id : E) return U;
7421   function Requires_Overriding                 (Id : E) return B;
7422   function Return_Applies_To                   (Id : E) return N;
7423   function Return_Present                      (Id : E) return B;
7424   function Returns_By_Ref                      (Id : E) return B;
7425   function Reverse_Bit_Order                   (Id : E) return B;
7426   function Reverse_Storage_Order               (Id : E) return B;
7427   function Rewritten_For_C                     (Id : E) return B;
7428   function RM_Size                             (Id : E) return U;
7429   function Scalar_Range                        (Id : E) return N;
7430   function Scale_Value                         (Id : E) return U;
7431   function Scope_Depth_Value                   (Id : E) return U;
7432   function Sec_Stack_Needed_For_Return         (Id : E) return B;
7433   function Shadow_Entities                     (Id : E) return S;
7434   function Shared_Var_Procs_Instance           (Id : E) return E;
7435   function Size_Check_Code                     (Id : E) return N;
7436   function Size_Depends_On_Discriminant        (Id : E) return B;
7437   function Size_Known_At_Compile_Time          (Id : E) return B;
7438   function Small_Value                         (Id : E) return R;
7439   function SPARK_Aux_Pragma                    (Id : E) return N;
7440   function SPARK_Aux_Pragma_Inherited          (Id : E) return B;
7441   function SPARK_Pragma                        (Id : E) return N;
7442   function SPARK_Pragma_Inherited              (Id : E) return B;
7443   function Spec_Entity                         (Id : E) return E;
7444   function SSO_Set_High_By_Default             (Id : E) return B;
7445   function SSO_Set_Low_By_Default              (Id : E) return B;
7446   function Static_Discrete_Predicate           (Id : E) return S;
7447   function Static_Elaboration_Desired          (Id : E) return B;
7448   function Static_Initialization               (Id : E) return N;
7449   function Static_Real_Or_String_Predicate     (Id : E) return N;
7450   function Status_Flag_Or_Transient_Decl       (Id : E) return E;
7451   function Storage_Size_Variable               (Id : E) return E;
7452   function Stored_Constraint                   (Id : E) return L;
7453   function Stores_Attribute_Old_Prefix         (Id : E) return B;
7454   function Strict_Alignment                    (Id : E) return B;
7455   function String_Literal_Length               (Id : E) return U;
7456   function String_Literal_Low_Bound            (Id : E) return N;
7457   function Subprograms_For_Type                (Id : E) return L;
7458   function Subps_Index                         (Id : E) return U;
7459   function Suppress_Elaboration_Warnings       (Id : E) return B;
7460   function Suppress_Initialization             (Id : E) return B;
7461   function Suppress_Style_Checks               (Id : E) return B;
7462   function Suppress_Value_Tracking_On_Call     (Id : E) return B;
7463   function Task_Body_Procedure                 (Id : E) return N;
7464   function Thunk_Entity                        (Id : E) return E;
7465   function Treat_As_Volatile                   (Id : E) return B;
7466   function Underlying_Full_View                (Id : E) return E;
7467   function Underlying_Record_View              (Id : E) return E;
7468   function Universal_Aliasing                  (Id : E) return B;
7469   function Unset_Reference                     (Id : E) return N;
7470   function Used_As_Generic_Actual              (Id : E) return B;
7471   function Uses_Lock_Free                      (Id : E) return B;
7472   function Uses_Sec_Stack                      (Id : E) return B;
7473   function Validated_Object                    (Id : E) return N;
7474   function Warnings_Off                        (Id : E) return B;
7475   function Warnings_Off_Used                   (Id : E) return B;
7476   function Warnings_Off_Used_Unmodified        (Id : E) return B;
7477   function Warnings_Off_Used_Unreferenced      (Id : E) return B;
7478   function Was_Hidden                          (Id : E) return B;
7479   function Wrapped_Entity                      (Id : E) return E;
7480
7481   -------------------------------
7482   -- Classification Attributes --
7483   -------------------------------
7484
7485   --  These functions provide a convenient functional notation for testing
7486   --  whether an Ekind value belongs to a specified kind, for example the
7487   --  function Is_Elementary_Type tests if its argument is in Elementary_Kind.
7488   --  In some cases, the test is of an entity attribute (e.g. in the case of
7489   --  Is_Generic_Type where the Ekind does not provide the needed
7490   --  information).
7491
7492   function Is_Access_Type                      (Id : E) return B;
7493   function Is_Access_Protected_Subprogram_Type (Id : E) return B;
7494   function Is_Access_Subprogram_Type           (Id : E) return B;
7495   function Is_Aggregate_Type                   (Id : E) return B;
7496   function Is_Anonymous_Access_Type            (Id : E) return B;
7497   function Is_Array_Type                       (Id : E) return B;
7498   function Is_Assignable                       (Id : E) return B;
7499   function Is_Class_Wide_Type                  (Id : E) return B;
7500   function Is_Composite_Type                   (Id : E) return B;
7501   function Is_Concurrent_Body                  (Id : E) return B;
7502   function Is_Concurrent_Record_Type           (Id : E) return B;
7503   function Is_Concurrent_Type                  (Id : E) return B;
7504   function Is_Decimal_Fixed_Point_Type         (Id : E) return B;
7505   function Is_Digits_Type                      (Id : E) return B;
7506   function Is_Discrete_Or_Fixed_Point_Type     (Id : E) return B;
7507   function Is_Discrete_Type                    (Id : E) return B;
7508   function Is_Elementary_Type                  (Id : E) return B;
7509   function Is_Entry                            (Id : E) return B;
7510   function Is_Enumeration_Type                 (Id : E) return B;
7511   function Is_Fixed_Point_Type                 (Id : E) return B;
7512   function Is_Floating_Point_Type              (Id : E) return B;
7513   function Is_Formal                           (Id : E) return B;
7514   function Is_Formal_Object                    (Id : E) return B;
7515   function Is_Formal_Subprogram                (Id : E) return B;
7516   function Is_Generic_Actual_Subprogram        (Id : E) return B;
7517   function Is_Generic_Actual_Type              (Id : E) return B;
7518   function Is_Generic_Subprogram               (Id : E) return B;
7519   function Is_Generic_Type                     (Id : E) return B;
7520   function Is_Generic_Unit                     (Id : E) return B;
7521   function Is_Ghost_Entity                     (Id : E) return B;
7522   function Is_Incomplete_Or_Private_Type       (Id : E) return B;
7523   function Is_Incomplete_Type                  (Id : E) return B;
7524   function Is_Integer_Type                     (Id : E) return B;
7525   function Is_Limited_Record                   (Id : E) return B;
7526   function Is_Modular_Integer_Type             (Id : E) return B;
7527   function Is_Named_Number                     (Id : E) return B;
7528   function Is_Numeric_Type                     (Id : E) return B;
7529   function Is_Object                           (Id : E) return B;
7530   function Is_Ordinary_Fixed_Point_Type        (Id : E) return B;
7531   function Is_Overloadable                     (Id : E) return B;
7532   function Is_Private_Type                     (Id : E) return B;
7533   function Is_Protected_Type                   (Id : E) return B;
7534   function Is_Real_Type                        (Id : E) return B;
7535   function Is_Record_Type                      (Id : E) return B;
7536   function Is_Scalar_Type                      (Id : E) return B;
7537   function Is_Signed_Integer_Type              (Id : E) return B;
7538   function Is_Subprogram                       (Id : E) return B;
7539   function Is_Subprogram_Or_Entry              (Id : E) return B;
7540   function Is_Subprogram_Or_Generic_Subprogram (Id : E) return B;
7541   function Is_Task_Type                        (Id : E) return B;
7542   function Is_Type                             (Id : E) return B;
7543
7544   -------------------------------------
7545   -- Synthesized Attribute Functions --
7546   -------------------------------------
7547
7548   --  The functions in this section synthesize attributes from the tree,
7549   --  so they do not correspond to defined fields in the entity itself.
7550
7551   function Address_Clause                      (Id : E) return N;
7552   function Aft_Value                           (Id : E) return U;
7553   function Alignment_Clause                    (Id : E) return N;
7554   function Base_Type                           (Id : E) return E;
7555   function Declaration_Node                    (Id : E) return N;
7556   function Designated_Type                     (Id : E) return E;
7557   function First_Component                     (Id : E) return E;
7558   function First_Component_Or_Discriminant     (Id : E) return E;
7559   function First_Formal                        (Id : E) return E;
7560   function First_Formal_With_Extras            (Id : E) return E;
7561   function Has_Attach_Handler                  (Id : E) return B;
7562   function Has_Entries                         (Id : E) return B;
7563   function Has_Foreign_Convention              (Id : E) return B;
7564   function Has_Non_Limited_View                (Id : E) return B;
7565   function Has_Non_Null_Abstract_State         (Id : E) return B;
7566   function Has_Non_Null_Visible_Refinement     (Id : E) return B;
7567   function Has_Null_Abstract_State             (Id : E) return B;
7568   function Has_Null_Visible_Refinement         (Id : E) return B;
7569   function Implementation_Base_Type            (Id : E) return E;
7570   function Is_Base_Type                        (Id : E) return B;
7571   function Is_Boolean_Type                     (Id : E) return B;
7572   function Is_Constant_Object                  (Id : E) return B;
7573   function Is_Controlled                       (Id : E) return B;
7574   function Is_Discriminal                      (Id : E) return B;
7575   function Is_Dynamic_Scope                    (Id : E) return B;
7576   function Is_External_State                   (Id : E) return B;
7577   function Is_Finalizer                        (Id : E) return B;
7578   function Is_Null_State                       (Id : E) return B;
7579   function Is_Package_Or_Generic_Package       (Id : E) return B;
7580   function Is_Packed_Array                     (Id : E) return B;
7581   function Is_Prival                           (Id : E) return B;
7582   function Is_Protected_Component              (Id : E) return B;
7583   function Is_Protected_Interface              (Id : E) return B;
7584   function Is_Protected_Record_Type            (Id : E) return B;
7585   function Is_Standard_Character_Type          (Id : E) return B;
7586   function Is_Standard_String_Type             (Id : E) return B;
7587   function Is_String_Type                      (Id : E) return B;
7588   function Is_Synchronized_Interface           (Id : E) return B;
7589   function Is_Synchronized_State               (Id : E) return B;
7590   function Is_Task_Interface                   (Id : E) return B;
7591   function Is_Task_Record_Type                 (Id : E) return B;
7592   function Is_Wrapper_Package                  (Id : E) return B;
7593   function Last_Formal                         (Id : E) return E;
7594   function Machine_Emax_Value                  (Id : E) return U;
7595   function Machine_Emin_Value                  (Id : E) return U;
7596   function Machine_Mantissa_Value              (Id : E) return U;
7597   function Machine_Radix_Value                 (Id : E) return U;
7598   function Model_Emin_Value                    (Id : E) return U;
7599   function Model_Epsilon_Value                 (Id : E) return R;
7600   function Model_Mantissa_Value                (Id : E) return U;
7601   function Model_Small_Value                   (Id : E) return R;
7602   function Next_Component                      (Id : E) return E;
7603   function Next_Component_Or_Discriminant      (Id : E) return E;
7604   function Next_Discriminant                   (Id : E) return E;
7605   function Next_Formal                         (Id : E) return E;
7606   function Next_Formal_With_Extras             (Id : E) return E;
7607   function Next_Literal                        (Id : E) return E;
7608   function Next_Stored_Discriminant            (Id : E) return E;
7609   function Number_Dimensions                   (Id : E) return Pos;
7610   function Number_Entries                      (Id : E) return Nat;
7611   function Number_Formals                      (Id : E) return Pos;
7612   function Parameter_Mode                      (Id : E) return Formal_Kind;
7613   function Partial_Refinement_Constituents     (Id : E) return L;
7614   function Primitive_Operations                (Id : E) return L;
7615   function Root_Type                           (Id : E) return E;
7616   function Safe_Emax_Value                     (Id : E) return U;
7617   function Safe_First_Value                    (Id : E) return R;
7618   function Safe_Last_Value                     (Id : E) return R;
7619   function Scope_Depth_Set                     (Id : E) return B;
7620   function Size_Clause                         (Id : E) return N;
7621   function Stream_Size_Clause                  (Id : E) return N;
7622   function Type_High_Bound                     (Id : E) return N;
7623   function Type_Low_Bound                      (Id : E) return N;
7624   function Underlying_Type                     (Id : E) return E;
7625
7626   ----------------------------------------------
7627   -- Type Representation Attribute Predicates --
7628   ----------------------------------------------
7629
7630   --  These predicates test the setting of the indicated attribute. If the
7631   --  value has been set, then Known is True, and Unknown is False. If no
7632   --  value is set, then Known is False and Unknown is True. The Known_Static
7633   --  predicate is true only if the value is set (Known) and is set to a
7634   --  compile time known value. Note that in the case of Alignment and
7635   --  Normalized_First_Bit, dynamic values are not possible, so we do not
7636   --  need a separate Known_Static calls in these cases. The not set (unknown)
7637   --  values are as follows:
7638
7639   --    Alignment               Uint_0 or No_Uint
7640   --    Component_Size          Uint_0 or No_Uint
7641   --    Component_Bit_Offset    No_Uint
7642   --    Digits_Value            Uint_0 or No_Uint
7643   --    Esize                   Uint_0 or No_Uint
7644   --    Normalized_First_Bit    No_Uint
7645   --    Normalized_Position     No_Uint
7646   --    Normalized_Position_Max No_Uint
7647   --    RM_Size                 Uint_0 or No_Uint
7648
7649   --  It would be cleaner to use No_Uint in all these cases, but historically
7650   --  we chose to use Uint_0 at first, and the change over will take time ???
7651   --  This is particularly true for the RM_Size field, where a value of zero
7652   --  is legitimate. We deal with this by a considering that the value is
7653   --  always known static for discrete types (and no other types can have
7654   --  an RM_Size value of zero).
7655
7656   --  In two cases, Known_Static_Esize and Known_Static_RM_Size, there is one
7657   --  more consideration, which is that we always return False for generic
7658   --  types. Within a template, the size can look known, because of the fake
7659   --  size values we put in template types, but they are not really known and
7660   --  anyone testing if they are known within the template should get False as
7661   --  a result to prevent incorrect assumptions.
7662
7663   function Known_Alignment                       (E : Entity_Id) return B;
7664   function Known_Component_Bit_Offset            (E : Entity_Id) return B;
7665   function Known_Component_Size                  (E : Entity_Id) return B;
7666   function Known_Esize                           (E : Entity_Id) return B;
7667   function Known_Normalized_First_Bit            (E : Entity_Id) return B;
7668   function Known_Normalized_Position             (E : Entity_Id) return B;
7669   function Known_Normalized_Position_Max         (E : Entity_Id) return B;
7670   function Known_RM_Size                         (E : Entity_Id) return B;
7671
7672   function Known_Static_Component_Bit_Offset     (E : Entity_Id) return B;
7673   function Known_Static_Component_Size           (E : Entity_Id) return B;
7674   function Known_Static_Esize                    (E : Entity_Id) return B;
7675   function Known_Static_Normalized_First_Bit     (E : Entity_Id) return B;
7676   function Known_Static_Normalized_Position      (E : Entity_Id) return B;
7677   function Known_Static_Normalized_Position_Max  (E : Entity_Id) return B;
7678   function Known_Static_RM_Size                  (E : Entity_Id) return B;
7679
7680   function Unknown_Alignment                     (E : Entity_Id) return B;
7681   function Unknown_Component_Bit_Offset          (E : Entity_Id) return B;
7682   function Unknown_Component_Size                (E : Entity_Id) return B;
7683   function Unknown_Esize                         (E : Entity_Id) return B;
7684   function Unknown_Normalized_First_Bit          (E : Entity_Id) return B;
7685   function Unknown_Normalized_Position           (E : Entity_Id) return B;
7686   function Unknown_Normalized_Position_Max       (E : Entity_Id) return B;
7687   function Unknown_RM_Size                       (E : Entity_Id) return B;
7688
7689   ------------------------------
7690   -- Attribute Set Procedures --
7691   ------------------------------
7692
7693   procedure Set_Abstract_States                 (Id : E; V : L);
7694   procedure Set_Accept_Address                  (Id : E; V : L);
7695   procedure Set_Access_Disp_Table               (Id : E; V : L);
7696   procedure Set_Access_Disp_Table_Elab_Flag     (Id : E; V : E);
7697   procedure Set_Activation_Record_Component     (Id : E; V : E);
7698   procedure Set_Actual_Subtype                  (Id : E; V : E);
7699   procedure Set_Address_Taken                   (Id : E; V : B := True);
7700   procedure Set_Alias                           (Id : E; V : E);
7701   procedure Set_Alignment                       (Id : E; V : U);
7702   procedure Set_Anonymous_Designated_Type       (Id : E; V : E);
7703   procedure Set_Anonymous_Masters               (Id : E; V : L);
7704   procedure Set_Anonymous_Object                (Id : E; V : E);
7705   procedure Set_Associated_Entity               (Id : E; V : E);
7706   procedure Set_Associated_Formal_Package       (Id : E; V : E);
7707   procedure Set_Associated_Node_For_Itype       (Id : E; V : N);
7708   procedure Set_Associated_Storage_Pool         (Id : E; V : E);
7709   procedure Set_Barrier_Function                (Id : E; V : N);
7710   procedure Set_BIP_Initialization_Call         (Id : E; V : N);
7711   procedure Set_Block_Node                      (Id : E; V : N);
7712   procedure Set_Body_Entity                     (Id : E; V : E);
7713   procedure Set_Body_Needed_For_Inlining        (Id : E; V : B := True);
7714   procedure Set_Body_Needed_For_SAL             (Id : E; V : B := True);
7715   procedure Set_Body_References                 (Id : E; V : L);
7716   procedure Set_C_Pass_By_Copy                  (Id : E; V : B := True);
7717   procedure Set_Can_Never_Be_Null               (Id : E; V : B := True);
7718   procedure Set_Can_Use_Internal_Rep            (Id : E; V : B := True);
7719   procedure Set_Checks_May_Be_Suppressed        (Id : E; V : B := True);
7720   procedure Set_Class_Wide_Clone                (Id : E; V : E);
7721   procedure Set_Class_Wide_Type                 (Id : E; V : E);
7722   procedure Set_Cloned_Subtype                  (Id : E; V : E);
7723   procedure Set_Component_Alignment             (Id : E; V : C);
7724   procedure Set_Component_Bit_Offset            (Id : E; V : U);
7725   procedure Set_Component_Clause                (Id : E; V : N);
7726   procedure Set_Component_Size                  (Id : E; V : U);
7727   procedure Set_Component_Type                  (Id : E; V : E);
7728   procedure Set_Contains_Ignored_Ghost_Code     (Id : E; V : B := True);
7729   procedure Set_Contract                        (Id : E; V : N);
7730   procedure Set_Contract_Wrapper                (Id : E; V : E);
7731   procedure Set_Corresponding_Concurrent_Type   (Id : E; V : E);
7732   procedure Set_Corresponding_Discriminant      (Id : E; V : E);
7733   procedure Set_Corresponding_Equality          (Id : E; V : E);
7734   procedure Set_Corresponding_Function          (Id : E; V : E);
7735   procedure Set_Corresponding_Procedure         (Id : E; V : E);
7736   procedure Set_Corresponding_Protected_Entry   (Id : E; V : E);
7737   procedure Set_Corresponding_Record_Component  (Id : E; V : E);
7738   procedure Set_Corresponding_Record_Type       (Id : E; V : E);
7739   procedure Set_Corresponding_Remote_Type       (Id : E; V : E);
7740   procedure Set_CR_Discriminant                 (Id : E; V : E);
7741   procedure Set_Current_Use_Clause              (Id : E; V : E);
7742   procedure Set_Current_Value                   (Id : E; V : N);
7743   procedure Set_Debug_Info_Off                  (Id : E; V : B := True);
7744   procedure Set_Debug_Renaming_Link             (Id : E; V : E);
7745   procedure Set_Default_Aspect_Component_Value  (Id : E; V : N);
7746   procedure Set_Default_Aspect_Value            (Id : E; V : N);
7747   procedure Set_Default_Expr_Function           (Id : E; V : E);
7748   procedure Set_Default_Expressions_Processed   (Id : E; V : B := True);
7749   procedure Set_Default_Value                   (Id : E; V : N);
7750   procedure Set_Delay_Cleanups                  (Id : E; V : B := True);
7751   procedure Set_Delay_Subprogram_Descriptors    (Id : E; V : B := True);
7752   procedure Set_Delta_Value                     (Id : E; V : R);
7753   procedure Set_Dependent_Instances             (Id : E; V : L);
7754   procedure Set_Depends_On_Private              (Id : E; V : B := True);
7755   procedure Set_Derived_Type_Link               (Id : E; V : E);
7756   procedure Set_Digits_Value                    (Id : E; V : U);
7757   procedure Set_Predicates_Ignored              (Id : E; V : B);
7758   procedure Set_Direct_Primitive_Operations     (Id : E; V : L);
7759   procedure Set_Directly_Designated_Type        (Id : E; V : E);
7760   procedure Set_Disable_Controlled              (Id : E; V : B := True);
7761   procedure Set_Discard_Names                   (Id : E; V : B := True);
7762   procedure Set_Discriminal                     (Id : E; V : E);
7763   procedure Set_Discriminal_Link                (Id : E; V : E);
7764   procedure Set_Discriminant_Checking_Func      (Id : E; V : E);
7765   procedure Set_Discriminant_Constraint         (Id : E; V : L);
7766   procedure Set_Discriminant_Default_Value      (Id : E; V : N);
7767   procedure Set_Discriminant_Number             (Id : E; V : U);
7768   procedure Set_Dispatch_Table_Wrappers         (Id : E; V : L);
7769   procedure Set_DT_Entry_Count                  (Id : E; V : U);
7770   procedure Set_DT_Offset_To_Top_Func           (Id : E; V : E);
7771   procedure Set_DT_Position                     (Id : E; V : U);
7772   procedure Set_DTC_Entity                      (Id : E; V : E);
7773   procedure Set_Elaborate_Body_Desirable        (Id : E; V : B := True);
7774   procedure Set_Elaboration_Entity              (Id : E; V : E);
7775   procedure Set_Elaboration_Entity_Required     (Id : E; V : B := True);
7776   procedure Set_Encapsulating_State             (Id : E; V : E);
7777   procedure Set_Enclosing_Scope                 (Id : E; V : E);
7778   procedure Set_Entry_Accepted                  (Id : E; V : B := True);
7779   procedure Set_Entry_Bodies_Array              (Id : E; V : E);
7780   procedure Set_Entry_Cancel_Parameter          (Id : E; V : E);
7781   procedure Set_Entry_Component                 (Id : E; V : E);
7782   procedure Set_Entry_Formal                    (Id : E; V : E);
7783   procedure Set_Entry_Index_Constant            (Id : E; V : E);
7784   procedure Set_Entry_Max_Queue_Lengths_Array   (Id : E; V : E);
7785   procedure Set_Entry_Parameters_Type           (Id : E; V : E);
7786   procedure Set_Enum_Pos_To_Rep                 (Id : E; V : E);
7787   procedure Set_Enumeration_Pos                 (Id : E; V : U);
7788   procedure Set_Enumeration_Rep                 (Id : E; V : U);
7789   procedure Set_Enumeration_Rep_Expr            (Id : E; V : N);
7790   procedure Set_Equivalent_Type                 (Id : E; V : E);
7791   procedure Set_Esize                           (Id : E; V : U);
7792   procedure Set_Extra_Accessibility             (Id : E; V : E);
7793   procedure Set_Extra_Accessibility_Of_Result   (Id : E; V : E);
7794   procedure Set_Extra_Constrained               (Id : E; V : E);
7795   procedure Set_Extra_Formal                    (Id : E; V : E);
7796   procedure Set_Extra_Formals                   (Id : E; V : E);
7797   procedure Set_Finalization_Master             (Id : E; V : E);
7798   procedure Set_Finalize_Storage_Only           (Id : E; V : B := True);
7799   procedure Set_Finalizer                       (Id : E; V : E);
7800   procedure Set_First_Entity                    (Id : E; V : E);
7801   procedure Set_First_Exit_Statement            (Id : E; V : N);
7802   procedure Set_First_Index                     (Id : E; V : N);
7803   procedure Set_First_Literal                   (Id : E; V : E);
7804   procedure Set_First_Private_Entity            (Id : E; V : E);
7805   procedure Set_First_Rep_Item                  (Id : E; V : N);
7806   procedure Set_Float_Rep                       (Id : E; V : F);
7807   procedure Set_Freeze_Node                     (Id : E; V : N);
7808   procedure Set_From_Limited_With               (Id : E; V : B := True);
7809   procedure Set_Full_View                       (Id : E; V : E);
7810   procedure Set_Generic_Homonym                 (Id : E; V : E);
7811   procedure Set_Generic_Renamings               (Id : E; V : L);
7812   procedure Set_Handler_Records                 (Id : E; V : S);
7813   procedure Set_Has_Aliased_Components          (Id : E; V : B := True);
7814   procedure Set_Has_Alignment_Clause            (Id : E; V : B := True);
7815   procedure Set_Has_All_Calls_Remote            (Id : E; V : B := True);
7816   procedure Set_Has_Atomic_Components           (Id : E; V : B := True);
7817   procedure Set_Has_Biased_Representation       (Id : E; V : B := True);
7818   procedure Set_Has_Completion                  (Id : E; V : B := True);
7819   procedure Set_Has_Completion_In_Body          (Id : E; V : B := True);
7820   procedure Set_Has_Complex_Representation      (Id : E; V : B := True);
7821   procedure Set_Has_Component_Size_Clause       (Id : E; V : B := True);
7822   procedure Set_Has_Constrained_Partial_View    (Id : E; V : B := True);
7823   procedure Set_Has_Contiguous_Rep              (Id : E; V : B := True);
7824   procedure Set_Has_Controlled_Component        (Id : E; V : B := True);
7825   procedure Set_Has_Controlling_Result          (Id : E; V : B := True);
7826   procedure Set_Has_Convention_Pragma           (Id : E; V : B := True);
7827   procedure Set_Has_Default_Aspect              (Id : E; V : B := True);
7828   procedure Set_Has_Delayed_Aspects             (Id : E; V : B := True);
7829   procedure Set_Has_Delayed_Freeze              (Id : E; V : B := True);
7830   procedure Set_Has_Delayed_Rep_Aspects         (Id : E; V : B := True);
7831   procedure Set_Has_Discriminants               (Id : E; V : B := True);
7832   procedure Set_Has_Dispatch_Table              (Id : E; V : B := True);
7833   procedure Set_Has_Dynamic_Predicate_Aspect    (Id : E; V : B := True);
7834   procedure Set_Has_Enumeration_Rep_Clause      (Id : E; V : B := True);
7835   procedure Set_Has_Exit                        (Id : E; V : B := True);
7836   procedure Set_Has_Expanded_Contract           (Id : E; V : B := True);
7837   procedure Set_Has_Forward_Instantiation       (Id : E; V : B := True);
7838   procedure Set_Has_Fully_Qualified_Name        (Id : E; V : B := True);
7839   procedure Set_Has_Gigi_Rep_Item               (Id : E; V : B := True);
7840   procedure Set_Has_Homonym                     (Id : E; V : B := True);
7841   procedure Set_Has_Implicit_Dereference        (Id : E; V : B := True);
7842   procedure Set_Has_Independent_Components      (Id : E; V : B := True);
7843   procedure Set_Has_Inheritable_Invariants      (Id : E; V : B := True);
7844   procedure Set_Has_Inherited_DIC               (Id : E; V : B := True);
7845   procedure Set_Has_Inherited_Invariants        (Id : E; V : B := True);
7846   procedure Set_Has_Initial_Value               (Id : E; V : B := True);
7847   procedure Set_Has_Loop_Entry_Attributes       (Id : E; V : B := True);
7848   procedure Set_Has_Machine_Radix_Clause        (Id : E; V : B := True);
7849   procedure Set_Has_Master_Entity               (Id : E; V : B := True);
7850   procedure Set_Has_Missing_Return              (Id : E; V : B := True);
7851   procedure Set_Has_Nested_Block_With_Handler   (Id : E; V : B := True);
7852   procedure Set_Has_Nested_Subprogram           (Id : E; V : B := True);
7853   procedure Set_Has_Non_Standard_Rep            (Id : E; V : B := True);
7854   procedure Set_Has_Object_Size_Clause          (Id : E; V : B := True);
7855   procedure Set_Has_Out_Or_In_Out_Parameter     (Id : E; V : B := True);
7856   procedure Set_Has_Own_DIC                     (Id : E; V : B := True);
7857   procedure Set_Has_Own_Invariants              (Id : E; V : B := True);
7858   procedure Set_Has_Partial_Visible_Refinement  (Id : E; V : B := True);
7859   procedure Set_Has_Per_Object_Constraint       (Id : E; V : B := True);
7860   procedure Set_Has_Pragma_Controlled           (Id : E; V : B := True);
7861   procedure Set_Has_Pragma_Elaborate_Body       (Id : E; V : B := True);
7862   procedure Set_Has_Pragma_Inline               (Id : E; V : B := True);
7863   procedure Set_Has_Pragma_Inline_Always        (Id : E; V : B := True);
7864   procedure Set_Has_Pragma_No_Inline            (Id : E; V : B := True);
7865   procedure Set_Has_Pragma_Ordered              (Id : E; V : B := True);
7866   procedure Set_Has_Pragma_Pack                 (Id : E; V : B := True);
7867   procedure Set_Has_Pragma_Preelab_Init         (Id : E; V : B := True);
7868   procedure Set_Has_Pragma_Pure                 (Id : E; V : B := True);
7869   procedure Set_Has_Pragma_Pure_Function        (Id : E; V : B := True);
7870   procedure Set_Has_Pragma_Thread_Local_Storage (Id : E; V : B := True);
7871   procedure Set_Has_Pragma_Unmodified           (Id : E; V : B := True);
7872   procedure Set_Has_Pragma_Unreferenced         (Id : E; V : B := True);
7873   procedure Set_Has_Pragma_Unreferenced_Objects (Id : E; V : B := True);
7874   procedure Set_Has_Pragma_Unused               (Id : E; V : B := True);
7875   procedure Set_Has_Predicates                  (Id : E; V : B := True);
7876   procedure Set_Has_Primitive_Operations        (Id : E; V : B := True);
7877   procedure Set_Has_Private_Ancestor            (Id : E; V : B := True);
7878   procedure Set_Has_Private_Declaration         (Id : E; V : B := True);
7879   procedure Set_Has_Private_Extension           (Id : E; V : B := True);
7880   procedure Set_Has_Protected                   (Id : E; V : B := True);
7881   procedure Set_Has_Qualified_Name              (Id : E; V : B := True);
7882   procedure Set_Has_RACW                        (Id : E; V : B := True);
7883   procedure Set_Has_Record_Rep_Clause           (Id : E; V : B := True);
7884   procedure Set_Has_Recursive_Call              (Id : E; V : B := True);
7885   procedure Set_Has_Shift_Operator              (Id : E; V : B := True);
7886   procedure Set_Has_Size_Clause                 (Id : E; V : B := True);
7887   procedure Set_Has_Small_Clause                (Id : E; V : B := True);
7888   procedure Set_Has_Specified_Layout            (Id : E; V : B := True);
7889   procedure Set_Has_Specified_Stream_Input      (Id : E; V : B := True);
7890   procedure Set_Has_Specified_Stream_Output     (Id : E; V : B := True);
7891   procedure Set_Has_Specified_Stream_Read       (Id : E; V : B := True);
7892   procedure Set_Has_Specified_Stream_Write      (Id : E; V : B := True);
7893   procedure Set_Has_Static_Discriminants        (Id : E; V : B := True);
7894   procedure Set_Has_Static_Predicate            (Id : E; V : B := True);
7895   procedure Set_Has_Static_Predicate_Aspect     (Id : E; V : B := True);
7896   procedure Set_Has_Storage_Size_Clause         (Id : E; V : B := True);
7897   procedure Set_Has_Stream_Size_Clause          (Id : E; V : B := True);
7898   procedure Set_Has_Task                        (Id : E; V : B := True);
7899   procedure Set_Has_Timing_Event                (Id : E; V : B := True);
7900   procedure Set_Has_Thunks                      (Id : E; V : B := True);
7901   procedure Set_Has_Unchecked_Union             (Id : E; V : B := True);
7902   procedure Set_Has_Unknown_Discriminants       (Id : E; V : B := True);
7903   procedure Set_Has_Visible_Refinement          (Id : E; V : B := True);
7904   procedure Set_Has_Volatile_Components         (Id : E; V : B := True);
7905   procedure Set_Has_Xref_Entry                  (Id : E; V : B := True);
7906   procedure Set_Hiding_Loop_Variable            (Id : E; V : E);
7907   procedure Set_Homonym                         (Id : E; V : E);
7908   procedure Set_Ignore_SPARK_Mode_Pragmas       (Id : E; V : B := True);
7909   procedure Set_Import_Pragma                   (Id : E; V : E);
7910   procedure Set_Incomplete_Actuals              (Id : E; V : L);
7911   procedure Set_In_Package_Body                 (Id : E; V : B := True);
7912   procedure Set_In_Private_Part                 (Id : E; V : B := True);
7913   procedure Set_In_Use                          (Id : E; V : B := True);
7914   procedure Set_Initialization_Statements       (Id : E; V : N);
7915   procedure Set_Inner_Instances                 (Id : E; V : L);
7916   procedure Set_Interface_Alias                 (Id : E; V : E);
7917   procedure Set_Interface_Name                  (Id : E; V : N);
7918   procedure Set_Interfaces                      (Id : E; V : L);
7919   procedure Set_Is_Abstract_Subprogram          (Id : E; V : B := True);
7920   procedure Set_Is_Abstract_Type                (Id : E; V : B := True);
7921   procedure Set_Is_Access_Constant              (Id : E; V : B := True);
7922   procedure Set_Is_Actual_Subtype               (Id : E; V : B := True);
7923   procedure Set_Is_Ada_2005_Only                (Id : E; V : B := True);
7924   procedure Set_Is_Ada_2012_Only                (Id : E; V : B := True);
7925   procedure Set_Is_Aliased                      (Id : E; V : B := True);
7926   procedure Set_Is_Asynchronous                 (Id : E; V : B := True);
7927   procedure Set_Is_Atomic                       (Id : E; V : B := True);
7928   procedure Set_Is_Bit_Packed_Array             (Id : E; V : B := True);
7929   procedure Set_Is_Called                       (Id : E; V : B := True);
7930   procedure Set_Is_Character_Type               (Id : E; V : B := True);
7931   procedure Set_Is_Checked_Ghost_Entity         (Id : E; V : B := True);
7932   procedure Set_Is_Child_Unit                   (Id : E; V : B := True);
7933   procedure Set_Is_Class_Wide_Clone             (Id : E; V : B := True);
7934   procedure Set_Is_Class_Wide_Equivalent_Type   (Id : E; V : B := True);
7935   procedure Set_Is_Compilation_Unit             (Id : E; V : B := True);
7936   procedure Set_Is_Completely_Hidden            (Id : E; V : B := True);
7937   procedure Set_Is_Concurrent_Record_Type       (Id : E; V : B := True);
7938   procedure Set_Is_Constr_Subt_For_U_Nominal    (Id : E; V : B := True);
7939   procedure Set_Is_Constr_Subt_For_UN_Aliased   (Id : E; V : B := True);
7940   procedure Set_Is_Constrained                  (Id : E; V : B := True);
7941   procedure Set_Is_Constructor                  (Id : E; V : B := True);
7942   procedure Set_Is_Controlled_Active            (Id : E; V : B := True);
7943   procedure Set_Is_Controlling_Formal           (Id : E; V : B := True);
7944   procedure Set_Is_CPP_Class                    (Id : E; V : B := True);
7945   procedure Set_Is_Descendant_Of_Address        (Id : E; V : B := True);
7946   procedure Set_Is_DIC_Procedure                (Id : E; V : B := True);
7947   procedure Set_Is_Discrim_SO_Function          (Id : E; V : B := True);
7948   procedure Set_Is_Discriminant_Check_Function  (Id : E; V : B := True);
7949   procedure Set_Is_Dispatch_Table_Entity        (Id : E; V : B := True);
7950   procedure Set_Is_Dispatching_Operation        (Id : E; V : B := True);
7951   procedure Set_Is_Elaboration_Checks_OK_Id     (Id : E; V : B := True);
7952   procedure Set_Is_Eliminated                   (Id : E; V : B := True);
7953   procedure Set_Is_Entry_Formal                 (Id : E; V : B := True);
7954   procedure Set_Is_Entry_Wrapper                (Id : E; V : B := True);
7955   procedure Set_Is_Exception_Handler            (Id : E; V : B := True);
7956   procedure Set_Is_Exported                     (Id : E; V : B := True);
7957   procedure Set_Is_Finalized_Transient          (Id : E; V : B := True);
7958   procedure Set_Is_First_Subtype                (Id : E; V : B := True);
7959   procedure Set_Is_For_Access_Subtype           (Id : E; V : B := True);
7960   procedure Set_Is_Formal_Subprogram            (Id : E; V : B := True);
7961   procedure Set_Is_Frozen                       (Id : E; V : B := True);
7962   procedure Set_Is_Generic_Actual_Subprogram    (Id : E; V : B := True);
7963   procedure Set_Is_Generic_Actual_Type          (Id : E; V : B := True);
7964   procedure Set_Is_Generic_Instance             (Id : E; V : B := True);
7965   procedure Set_Is_Generic_Type                 (Id : E; V : B := True);
7966   procedure Set_Is_Hidden                       (Id : E; V : B := True);
7967   procedure Set_Is_Hidden_Non_Overridden_Subpgm (Id : E; V : B := True);
7968   procedure Set_Is_Hidden_Open_Scope            (Id : E; V : B := True);
7969   procedure Set_Is_Ignored_Ghost_Entity         (Id : E; V : B := True);
7970   procedure Set_Is_Ignored_Transient            (Id : E; V : B := True);
7971   procedure Set_Is_Immediately_Visible          (Id : E; V : B := True);
7972   procedure Set_Is_Implementation_Defined       (Id : E; V : B := True);
7973   procedure Set_Is_Imported                     (Id : E; V : B := True);
7974   procedure Set_Is_Independent                  (Id : E; V : B := True);
7975   procedure Set_Is_Initial_Condition_Procedure  (Id : E; V : B := True);
7976   procedure Set_Is_Inlined                      (Id : E; V : B := True);
7977   procedure Set_Is_Inlined_Always               (Id : E; V : B := True);
7978   procedure Set_Is_Instantiated                 (Id : E; V : B := True);
7979   procedure Set_Is_Interface                    (Id : E; V : B := True);
7980   procedure Set_Is_Internal                     (Id : E; V : B := True);
7981   procedure Set_Is_Interrupt_Handler            (Id : E; V : B := True);
7982   procedure Set_Is_Intrinsic_Subprogram         (Id : E; V : B := True);
7983   procedure Set_Is_Invariant_Procedure          (Id : E; V : B := True);
7984   procedure Set_Is_Itype                        (Id : E; V : B := True);
7985   procedure Set_Is_Known_Non_Null               (Id : E; V : B := True);
7986   procedure Set_Is_Known_Null                   (Id : E; V : B := True);
7987   procedure Set_Is_Known_Valid                  (Id : E; V : B := True);
7988   procedure Set_Is_Limited_Composite            (Id : E; V : B := True);
7989   procedure Set_Is_Limited_Interface            (Id : E; V : B := True);
7990   procedure Set_Is_Limited_Record               (Id : E; V : B := True);
7991   procedure Set_Is_Local_Anonymous_Access       (Id : E; V : B := True);
7992   procedure Set_Is_Machine_Code_Subprogram      (Id : E; V : B := True);
7993   procedure Set_Is_Non_Static_Subtype           (Id : E; V : B := True);
7994   procedure Set_Is_Null_Init_Proc               (Id : E; V : B := True);
7995   procedure Set_Is_Obsolescent                  (Id : E; V : B := True);
7996   procedure Set_Is_Only_Out_Parameter           (Id : E; V : B := True);
7997   procedure Set_Is_Package_Body_Entity          (Id : E; V : B := True);
7998   procedure Set_Is_Packed                       (Id : E; V : B := True);
7999   procedure Set_Is_Packed_Array_Impl_Type       (Id : E; V : B := True);
8000   procedure Set_Is_Param_Block_Component_Type   (Id : E; V : B := True);
8001   procedure Set_Is_Partial_Invariant_Procedure  (Id : E; V : B := True);
8002   procedure Set_Is_Potentially_Use_Visible      (Id : E; V : B := True);
8003   procedure Set_Is_Predicate_Function           (Id : E; V : B := True);
8004   procedure Set_Is_Predicate_Function_M         (Id : E; V : B := True);
8005   procedure Set_Is_Preelaborated                (Id : E; V : B := True);
8006   procedure Set_Is_Primitive                    (Id : E; V : B := True);
8007   procedure Set_Is_Primitive_Wrapper            (Id : E; V : B := True);
8008   procedure Set_Is_Private_Composite            (Id : E; V : B := True);
8009   procedure Set_Is_Private_Descendant           (Id : E; V : B := True);
8010   procedure Set_Is_Private_Primitive            (Id : E; V : B := True);
8011   procedure Set_Is_Public                       (Id : E; V : B := True);
8012   procedure Set_Is_Pure                         (Id : E; V : B := True);
8013   procedure Set_Is_Pure_Unit_Access_Type        (Id : E; V : B := True);
8014   procedure Set_Is_RACW_Stub_Type               (Id : E; V : B := True);
8015   procedure Set_Is_Raised                       (Id : E; V : B := True);
8016   procedure Set_Is_Remote_Call_Interface        (Id : E; V : B := True);
8017   procedure Set_Is_Remote_Types                 (Id : E; V : B := True);
8018   procedure Set_Is_Renaming_Of_Object           (Id : E; V : B := True);
8019   procedure Set_Is_Return_Object                (Id : E; V : B := True);
8020   procedure Set_Is_Safe_To_Reevaluate           (Id : E; V : B := True);
8021   procedure Set_Is_Shared_Passive               (Id : E; V : B := True);
8022   procedure Set_Is_Static_Type                  (Id : E; V : B := True);
8023   procedure Set_Is_Statically_Allocated         (Id : E; V : B := True);
8024   procedure Set_Is_Tag                          (Id : E; V : B := True);
8025   procedure Set_Is_Tagged_Type                  (Id : E; V : B := True);
8026   procedure Set_Is_Thunk                        (Id : E; V : B := True);
8027   procedure Set_Is_Trivial_Subprogram           (Id : E; V : B := True);
8028   procedure Set_Is_True_Constant                (Id : E; V : B := True);
8029   procedure Set_Is_Unchecked_Union              (Id : E; V : B := True);
8030   procedure Set_Is_Underlying_Full_View         (Id : E; V : B := True);
8031   procedure Set_Is_Underlying_Record_View       (Id : E; V : B := True);
8032   procedure Set_Is_Unimplemented                (Id : E; V : B := True);
8033   procedure Set_Is_Unsigned_Type                (Id : E; V : B := True);
8034   procedure Set_Is_Uplevel_Referenced_Entity    (Id : E; V : B := True);
8035   procedure Set_Is_Valued_Procedure             (Id : E; V : B := True);
8036   procedure Set_Is_Visible_Formal               (Id : E; V : B := True);
8037   procedure Set_Is_Visible_Lib_Unit             (Id : E; V : B := True);
8038   procedure Set_Is_Volatile                     (Id : E; V : B := True);
8039   procedure Set_Is_Volatile_Full_Access         (Id : E; V : B := True);
8040   procedure Set_Itype_Printed                   (Id : E; V : B := True);
8041   procedure Set_Kill_Elaboration_Checks         (Id : E; V : B := True);
8042   procedure Set_Kill_Range_Checks               (Id : E; V : B := True);
8043   procedure Set_Known_To_Have_Preelab_Init      (Id : E; V : B := True);
8044   procedure Set_Last_Aggregate_Assignment       (Id : E; V : N);
8045   procedure Set_Last_Assignment                 (Id : E; V : N);
8046   procedure Set_Last_Entity                     (Id : E; V : E);
8047   procedure Set_Limited_View                    (Id : E; V : E);
8048   procedure Set_Linker_Section_Pragma           (Id : E; V : N);
8049   procedure Set_Lit_Indexes                     (Id : E; V : E);
8050   procedure Set_Lit_Strings                     (Id : E; V : E);
8051   procedure Set_Low_Bound_Tested                (Id : E; V : B := True);
8052   procedure Set_Machine_Radix_10                (Id : E; V : B := True);
8053   procedure Set_Master_Id                       (Id : E; V : E);
8054   procedure Set_Materialize_Entity              (Id : E; V : B := True);
8055   procedure Set_May_Inherit_Delayed_Rep_Aspects (Id : E; V : B := True);
8056   procedure Set_Mechanism                       (Id : E; V : M);
8057   procedure Set_Modulus                         (Id : E; V : U);
8058   procedure Set_Must_Be_On_Byte_Boundary        (Id : E; V : B := True);
8059   procedure Set_Must_Have_Preelab_Init          (Id : E; V : B := True);
8060   procedure Set_Needs_Debug_Info                (Id : E; V : B := True);
8061   procedure Set_Needs_No_Actuals                (Id : E; V : B := True);
8062   procedure Set_Nested_Scenarios                (Id : E; V : L);
8063   procedure Set_Never_Set_In_Source             (Id : E; V : B := True);
8064   procedure Set_Next_Inlined_Subprogram         (Id : E; V : E);
8065   procedure Set_No_Dynamic_Predicate_On_Actual  (Id : E; V : B := True);
8066   procedure Set_No_Pool_Assigned                (Id : E; V : B := True);
8067   procedure Set_No_Predicate_On_Actual          (Id : E; V : B := True);
8068   procedure Set_No_Reordering                   (Id : E; V : B := True);
8069   procedure Set_No_Return                       (Id : E; V : B := True);
8070   procedure Set_No_Strict_Aliasing              (Id : E; V : B := True);
8071   procedure Set_No_Tagged_Streams_Pragma        (Id : E; V : N);
8072   procedure Set_Non_Binary_Modulus              (Id : E; V : B := True);
8073   procedure Set_Non_Limited_View                (Id : E; V : E);
8074   procedure Set_Nonzero_Is_True                 (Id : E; V : B := True);
8075   procedure Set_Normalized_First_Bit            (Id : E; V : U);
8076   procedure Set_Normalized_Position             (Id : E; V : U);
8077   procedure Set_Normalized_Position_Max         (Id : E; V : U);
8078   procedure Set_OK_To_Rename                    (Id : E; V : B := True);
8079   procedure Set_Optimize_Alignment_Space        (Id : E; V : B := True);
8080   procedure Set_Optimize_Alignment_Time         (Id : E; V : B := True);
8081   procedure Set_Original_Access_Type            (Id : E; V : E);
8082   procedure Set_Original_Array_Type             (Id : E; V : E);
8083   procedure Set_Original_Protected_Subprogram   (Id : E; V : N);
8084   procedure Set_Original_Record_Component       (Id : E; V : E);
8085   procedure Set_Overlays_Constant               (Id : E; V : B := True);
8086   procedure Set_Overridden_Operation            (Id : E; V : E);
8087   procedure Set_Package_Instantiation           (Id : E; V : N);
8088   procedure Set_Packed_Array_Impl_Type          (Id : E; V : E);
8089   procedure Set_Parent_Subtype                  (Id : E; V : E);
8090   procedure Set_Part_Of_Constituents            (Id : E; V : L);
8091   procedure Set_Part_Of_References              (Id : E; V : L);
8092   procedure Set_Partial_View_Has_Unknown_Discr  (Id : E; V : B := True);
8093   procedure Set_Pending_Access_Types            (Id : E; V : L);
8094   procedure Set_Postconditions_Proc             (Id : E; V : E);
8095   procedure Set_Prival                          (Id : E; V : E);
8096   procedure Set_Prival_Link                     (Id : E; V : E);
8097   procedure Set_Private_Dependents              (Id : E; V : L);
8098   procedure Set_Private_View                    (Id : E; V : N);
8099   procedure Set_Protected_Body_Subprogram       (Id : E; V : E);
8100   procedure Set_Protected_Formal                (Id : E; V : E);
8101   procedure Set_Protected_Subprogram            (Id : E; V : N);
8102   procedure Set_Protection_Object               (Id : E; V : E);
8103   procedure Set_Reachable                       (Id : E; V : B := True);
8104   procedure Set_Receiving_Entry                 (Id : E; V : E);
8105   procedure Set_Referenced                      (Id : E; V : B := True);
8106   procedure Set_Referenced_As_LHS               (Id : E; V : B := True);
8107   procedure Set_Referenced_As_Out_Parameter     (Id : E; V : B := True);
8108   procedure Set_Refinement_Constituents         (Id : E; V : L);
8109   procedure Set_Register_Exception_Call         (Id : E; V : N);
8110   procedure Set_Related_Array_Object            (Id : E; V : E);
8111   procedure Set_Related_Expression              (Id : E; V : N);
8112   procedure Set_Related_Instance                (Id : E; V : E);
8113   procedure Set_Related_Type                    (Id : E; V : E);
8114   procedure Set_Relative_Deadline_Variable      (Id : E; V : E);
8115   procedure Set_Renamed_Entity                  (Id : E; V : N);
8116   procedure Set_Renamed_In_Spec                 (Id : E; V : B := True);
8117   procedure Set_Renamed_Object                  (Id : E; V : N);
8118   procedure Set_Renaming_Map                    (Id : E; V : U);
8119   procedure Set_Requires_Overriding             (Id : E; V : B := True);
8120   procedure Set_Return_Applies_To               (Id : E; V : N);
8121   procedure Set_Return_Present                  (Id : E; V : B := True);
8122   procedure Set_Returns_By_Ref                  (Id : E; V : B := True);
8123   procedure Set_Reverse_Bit_Order               (Id : E; V : B := True);
8124   procedure Set_Reverse_Storage_Order           (Id : E; V : B := True);
8125   procedure Set_Rewritten_For_C                 (Id : E; V : B := True);
8126   procedure Set_RM_Size                         (Id : E; V : U);
8127   procedure Set_Scalar_Range                    (Id : E; V : N);
8128   procedure Set_Scale_Value                     (Id : E; V : U);
8129   procedure Set_Scope_Depth_Value               (Id : E; V : U);
8130   procedure Set_Sec_Stack_Needed_For_Return     (Id : E; V : B := True);
8131   procedure Set_Shadow_Entities                 (Id : E; V : S);
8132   procedure Set_Shared_Var_Procs_Instance       (Id : E; V : E);
8133   procedure Set_Size_Check_Code                 (Id : E; V : N);
8134   procedure Set_Size_Depends_On_Discriminant    (Id : E; V : B := True);
8135   procedure Set_Size_Known_At_Compile_Time      (Id : E; V : B := True);
8136   procedure Set_Small_Value                     (Id : E; V : R);
8137   procedure Set_SPARK_Aux_Pragma                (Id : E; V : N);
8138   procedure Set_SPARK_Aux_Pragma_Inherited      (Id : E; V : B := True);
8139   procedure Set_SPARK_Pragma                    (Id : E; V : N);
8140   procedure Set_SPARK_Pragma_Inherited          (Id : E; V : B := True);
8141   procedure Set_Spec_Entity                     (Id : E; V : E);
8142   procedure Set_SSO_Set_High_By_Default         (Id : E; V : B := True);
8143   procedure Set_SSO_Set_Low_By_Default          (Id : E; V : B := True);
8144   procedure Set_Static_Discrete_Predicate       (Id : E; V : S);
8145   procedure Set_Static_Elaboration_Desired      (Id : E; V : B);
8146   procedure Set_Static_Initialization           (Id : E; V : N);
8147   procedure Set_Static_Real_Or_String_Predicate (Id : E; V : N);
8148   procedure Set_Status_Flag_Or_Transient_Decl   (Id : E; V : E);
8149   procedure Set_Storage_Size_Variable           (Id : E; V : E);
8150   procedure Set_Stored_Constraint               (Id : E; V : L);
8151   procedure Set_Stores_Attribute_Old_Prefix     (Id : E; V : B := True);
8152   procedure Set_Strict_Alignment                (Id : E; V : B := True);
8153   procedure Set_String_Literal_Length           (Id : E; V : U);
8154   procedure Set_String_Literal_Low_Bound        (Id : E; V : N);
8155   procedure Set_Subprograms_For_Type            (Id : E; V : L);
8156   procedure Set_Subps_Index                     (Id : E; V : U);
8157   procedure Set_Suppress_Elaboration_Warnings   (Id : E; V : B := True);
8158   procedure Set_Suppress_Initialization         (Id : E; V : B := True);
8159   procedure Set_Suppress_Style_Checks           (Id : E; V : B := True);
8160   procedure Set_Suppress_Value_Tracking_On_Call (Id : E; V : B := True);
8161   procedure Set_Task_Body_Procedure             (Id : E; V : N);
8162   procedure Set_Thunk_Entity                    (Id : E; V : E);
8163   procedure Set_Treat_As_Volatile               (Id : E; V : B := True);
8164   procedure Set_Underlying_Full_View            (Id : E; V : E);
8165   procedure Set_Underlying_Record_View          (Id : E; V : E);
8166   procedure Set_Universal_Aliasing              (Id : E; V : B := True);
8167   procedure Set_Unset_Reference                 (Id : E; V : N);
8168   procedure Set_Used_As_Generic_Actual          (Id : E; V : B := True);
8169   procedure Set_Uses_Lock_Free                  (Id : E; V : B := True);
8170   procedure Set_Uses_Sec_Stack                  (Id : E; V : B := True);
8171   procedure Set_Validated_Object                (Id : E; V : N);
8172   procedure Set_Warnings_Off                    (Id : E; V : B := True);
8173   procedure Set_Warnings_Off_Used               (Id : E; V : B := True);
8174   procedure Set_Warnings_Off_Used_Unmodified    (Id : E; V : B := True);
8175   procedure Set_Warnings_Off_Used_Unreferenced  (Id : E; V : B := True);
8176   procedure Set_Was_Hidden                      (Id : E; V : B := True);
8177   procedure Set_Wrapped_Entity                  (Id : E; V : E);
8178
8179   ---------------------------------------------------
8180   -- Access to Subprograms in Subprograms_For_Type --
8181   ---------------------------------------------------
8182
8183   function DIC_Procedure                        (Id : E) return E;
8184   function Invariant_Procedure                  (Id : E) return E;
8185   function Partial_Invariant_Procedure          (Id : E) return E;
8186   function Predicate_Function                   (Id : E) return E;
8187   function Predicate_Function_M                 (Id : E) return E;
8188
8189   procedure Set_DIC_Procedure                   (Id : E; V : E);
8190   procedure Set_Invariant_Procedure             (Id : E; V : E);
8191   procedure Set_Partial_Invariant_Procedure     (Id : E; V : E);
8192   procedure Set_Predicate_Function              (Id : E; V : E);
8193   procedure Set_Predicate_Function_M            (Id : E; V : E);
8194
8195   -----------------------------------
8196   -- Field Initialization Routines --
8197   -----------------------------------
8198
8199   --  These routines are overloadings of some of the above Set procedures
8200   --  where the argument is normally a Uint. The overloadings take an Int
8201   --  parameter instead, and appropriately convert it. There are also
8202   --  versions that implicitly initialize to the appropriate "not set"
8203   --  value. The not set (unknown) values are as follows:
8204
8205   --    Alignment                 Uint_0
8206   --    Component_Size            Uint_0
8207   --    Component_Bit_Offset      No_Uint
8208   --    Digits_Value              Uint_0
8209   --    Esize                     Uint_0
8210   --    Normalized_First_Bit      No_Uint
8211   --    Normalized_Position       No_Uint
8212   --    Normalized_Position_Max   No_Uint
8213   --    RM_Size                   Uint_0
8214
8215   --  It would be cleaner to use No_Uint in all these cases, but historically
8216   --  we chose to use Uint_0 at first, and the change over will take time ???
8217   --  This is particularly true for the RM_Size field, where a value of zero
8218   --  is legitimate and causes some special tests around the code.
8219
8220   --  Contrary to the corresponding Set procedures above, these routines
8221   --  do NOT check the entity kind of their argument, instead they set the
8222   --  underlying Uint fields directly (this allows them to be used for
8223   --  entities whose Ekind has not been set yet).
8224
8225   procedure Init_Alignment                (Id : E; V : Int);
8226   procedure Init_Component_Size           (Id : E; V : Int);
8227   procedure Init_Component_Bit_Offset     (Id : E; V : Int);
8228   procedure Init_Digits_Value             (Id : E; V : Int);
8229   procedure Init_Esize                    (Id : E; V : Int);
8230   procedure Init_Normalized_First_Bit     (Id : E; V : Int);
8231   procedure Init_Normalized_Position      (Id : E; V : Int);
8232   procedure Init_Normalized_Position_Max  (Id : E; V : Int);
8233   procedure Init_RM_Size                  (Id : E; V : Int);
8234
8235   procedure Init_Alignment                (Id : E);
8236   procedure Init_Component_Size           (Id : E);
8237   procedure Init_Component_Bit_Offset     (Id : E);
8238   procedure Init_Digits_Value             (Id : E);
8239   procedure Init_Esize                    (Id : E);
8240   procedure Init_Normalized_First_Bit     (Id : E);
8241   procedure Init_Normalized_Position      (Id : E);
8242   procedure Init_Normalized_Position_Max  (Id : E);
8243   procedure Init_RM_Size                  (Id : E);
8244
8245   procedure Init_Size_Align (Id : E);
8246   --  This procedure initializes both size fields and the alignment
8247   --  field to all be Unknown.
8248
8249   procedure Init_Object_Size_Align (Id : E);
8250   --  Same as Init_Size_Align except RM_Size field (which is only for types)
8251   --  is unaffected.
8252
8253   procedure Init_Size (Id : E; V : Int);
8254   --  Initialize both the Esize and RM_Size fields of E to V
8255
8256   procedure Init_Component_Location (Id : E);
8257   --  Initializes all fields describing the location of a component
8258   --  (Normalized_Position, Component_Bit_Offset, Normalized_First_Bit,
8259   --  Normalized_Position_Max, Esize) to all be Unknown.
8260
8261   ---------------
8262   -- Iterators --
8263   ---------------
8264
8265   --  The call to Next_xxx (obj) is equivalent to obj := Next_xxx (obj)
8266   --  We define the set of Proc_Next_xxx routines simply for the purposes
8267   --  of inlining them without necessarily inlining the function.
8268
8269   procedure Proc_Next_Component                 (N : in out Node_Id);
8270   procedure Proc_Next_Component_Or_Discriminant (N : in out Node_Id);
8271   procedure Proc_Next_Discriminant              (N : in out Node_Id);
8272   procedure Proc_Next_Formal                    (N : in out Node_Id);
8273   procedure Proc_Next_Formal_With_Extras        (N : in out Node_Id);
8274   procedure Proc_Next_Index                     (N : in out Node_Id);
8275   procedure Proc_Next_Inlined_Subprogram        (N : in out Node_Id);
8276   procedure Proc_Next_Literal                   (N : in out Node_Id);
8277   procedure Proc_Next_Stored_Discriminant       (N : in out Node_Id);
8278
8279   pragma Inline (Proc_Next_Component);
8280   pragma Inline (Proc_Next_Component_Or_Discriminant);
8281   pragma Inline (Proc_Next_Discriminant);
8282   pragma Inline (Proc_Next_Formal);
8283   pragma Inline (Proc_Next_Formal_With_Extras);
8284   pragma Inline (Proc_Next_Index);
8285   pragma Inline (Proc_Next_Inlined_Subprogram);
8286   pragma Inline (Proc_Next_Literal);
8287   pragma Inline (Proc_Next_Stored_Discriminant);
8288
8289   procedure Next_Component                 (N : in out Node_Id)
8290     renames Proc_Next_Component;
8291
8292   procedure Next_Component_Or_Discriminant (N : in out Node_Id)
8293     renames Proc_Next_Component_Or_Discriminant;
8294
8295   procedure Next_Discriminant              (N : in out Node_Id)
8296     renames Proc_Next_Discriminant;
8297
8298   procedure Next_Formal                    (N : in out Node_Id)
8299     renames Proc_Next_Formal;
8300
8301   procedure Next_Formal_With_Extras        (N : in out Node_Id)
8302     renames Proc_Next_Formal_With_Extras;
8303
8304   procedure Next_Index                     (N : in out Node_Id)
8305     renames Proc_Next_Index;
8306
8307   procedure Next_Inlined_Subprogram        (N : in out Node_Id)
8308     renames Proc_Next_Inlined_Subprogram;
8309
8310   procedure Next_Literal                   (N : in out Node_Id)
8311     renames Proc_Next_Literal;
8312
8313   procedure Next_Stored_Discriminant       (N : in out Node_Id)
8314     renames Proc_Next_Stored_Discriminant;
8315
8316   ---------------------------
8317   -- Testing Warning Flags --
8318   ---------------------------
8319
8320   --  These routines are to be used rather than testing flags Warnings_Off,
8321   --  Has_Pragma_Unmodified, Has_Pragma_Unreferenced. They deal with setting
8322   --  the flags Warnings_Off_Used[_Unmodified|Unreferenced] for later access.
8323
8324   function Has_Warnings_Off (E : Entity_Id) return Boolean;
8325   --  If Warnings_Off is set on E, then returns True and also sets the flag
8326   --  Warnings_Off_Used on E. If Warnings_Off is not set on E, returns False
8327   --  and has no side effect.
8328
8329   function Has_Unmodified (E : Entity_Id) return Boolean;
8330   --  If flag Has_Pragma_Unmodified is set on E, returns True with no side
8331   --  effects. Otherwise if Warnings_Off is set on E, returns True and also
8332   --  sets the flag Warnings_Off_Used_Unmodified on E. If neither of the flags
8333   --  Warnings_Off nor Has_Pragma_Unmodified is set, returns False with no
8334   --  side effects.
8335
8336   function Has_Unreferenced (E : Entity_Id) return Boolean;
8337   --  If flag Has_Pragma_Unreferenced is set on E, returns True with no side
8338   --  effects. Otherwise if Warnings_Off is set on E, returns True and also
8339   --  sets the flag Warnings_Off_Used_Unreferenced on E. If neither of the
8340   --  flags Warnings_Off nor Has_Pragma_Unreferenced is set, returns False
8341   --  with no side effects.
8342
8343   ----------------------------------------------
8344   -- Subprograms for Accessing Rep Item Chain --
8345   ----------------------------------------------
8346
8347   --  The First_Rep_Item field of every entity points to a linked list (linked
8348   --  through Next_Rep_Item) of representation pragmas, attribute definition
8349   --  clauses, representation clauses, and aspect specifications that apply to
8350   --  the item. Note that in the case of types, it is assumed that any such
8351   --  rep items for a base type also apply to all subtypes. This is achieved
8352   --  by having the chain for subtypes link onto the chain for the base type,
8353   --  so that new entries for the subtype are added at the start of the chain.
8354   --
8355   --  Note: aspect specification nodes are linked only when evaluation of the
8356   --  expression is deferred to the freeze point. For further details see
8357   --  Sem_Ch13.Analyze_Aspect_Specifications.
8358
8359   function Get_Attribute_Definition_Clause
8360     (E  : Entity_Id;
8361      Id : Attribute_Id) return Node_Id;
8362   --  Searches the Rep_Item chain for a given entity E, for an instance of an
8363   --  attribute definition clause with the given attribute Id. If found, the
8364   --  value returned is the N_Attribute_Definition_Clause node, otherwise
8365   --  Empty is returned.
8366
8367   function Get_Pragma (E : Entity_Id; Id : Pragma_Id) return Node_Id;
8368   --  Searches the Rep_Item chain of entity E, for an instance of a pragma
8369   --  with the given pragma Id. If found, the value returned is the N_Pragma
8370   --  node, otherwise Empty is returned. The following contract pragmas that
8371   --  appear in N_Contract nodes are also handled by this routine:
8372   --    Abstract_State
8373   --    Async_Readers
8374   --    Async_Writers
8375   --    Attach_Handler
8376   --    Constant_After_Elaboration
8377   --    Contract_Cases
8378   --    Depends
8379   --    Effective_Reads
8380   --    Effective_Writes
8381   --    Global
8382   --    Initial_Condition
8383   --    Initializes
8384   --    Interrupt_Handler
8385   --    Part_Of
8386   --    Precondition
8387   --    Postcondition
8388   --    Refined_Depends
8389   --    Refined_Global
8390   --    Refined_Post
8391   --    Refined_State
8392   --    Test_Case
8393   --    Volatile_Function
8394
8395   function Get_Class_Wide_Pragma
8396     (E  : Entity_Id;
8397      Id : Pragma_Id) return Node_Id;
8398   --  Examine Rep_Item chain to locate a classwide pre- or postcondition of a
8399   --  primitive operation. Returns Empty if not present.
8400
8401   function Get_Record_Representation_Clause (E : Entity_Id) return Node_Id;
8402   --  Searches the Rep_Item chain for a given entity E, for a record
8403   --  representation clause, and if found, returns it. Returns Empty
8404   --  if no such clause is found.
8405
8406   function Present_In_Rep_Item (E : Entity_Id; N : Node_Id) return Boolean;
8407   --  Return True if N is present in the Rep_Item chain for a given entity E
8408
8409   procedure Record_Rep_Item (E : Entity_Id; N : Node_Id);
8410   --  N is the node for a representation pragma, representation clause, an
8411   --  attribute definition clause, or an aspect specification that applies to
8412   --  entity E. This procedure links the node N onto the Rep_Item chain for
8413   --  entity E. Note that it is an error to call this procedure with E being
8414   --  overloadable, and N being a pragma that applies to multiple overloadable
8415   --  entities (Convention, Interface, Inline, Inline_Always, Import, Export,
8416   --  External). This is not allowed even in the case where the entity is not
8417   --  overloaded, since we can't rely on it being present in the overloaded
8418   --  case, it is not useful to have it present in the non-overloaded case.
8419
8420   -------------------------------
8421   -- Miscellaneous Subprograms --
8422   -------------------------------
8423
8424   procedure Append_Entity (Id : Entity_Id; V : Entity_Id);
8425   --  Add an entity to the list of entities declared in the scope V
8426
8427   function Get_Full_View (T : Entity_Id) return Entity_Id;
8428   --  If T is an incomplete type and the full declaration has been seen, or
8429   --  is the name of a class_wide type whose root is incomplete, return the
8430   --  corresponding full declaration, else return T itself.
8431
8432   function Is_Entity_Name (N : Node_Id) return Boolean;
8433   --  Test if the node N is the name of an entity (i.e. is an identifier,
8434   --  expanded name, or an attribute reference that returns an entity).
8435
8436   function Next_Index (Id : Node_Id) return Node_Id;
8437   --  Given an index from a previous call to First_Index or Next_Index,
8438   --  returns a node representing the occurrence of the next index subtype,
8439   --  or Empty if there are no more index subtypes.
8440
8441   function Scope_Depth (Id : Entity_Id) return Uint;
8442   --  Returns the scope depth value of the Id, unless the Id is a record
8443   --  type, in which case it returns the scope depth of the record scope.
8444
8445   function Subtype_Kind (K : Entity_Kind) return Entity_Kind;
8446   --  Given an entity_kind K this function returns the entity_kind
8447   --  corresponding to subtype kind of the type represented by K. For
8448   --  example if K is E_Signed_Integer_Type then E_Signed_Integer_Subtype
8449   --  is returned. If K is already a subtype kind it itself is returned. An
8450   --  internal error is generated if no such correspondence exists for K.
8451
8452   ----------------------------------
8453   -- Debugging Output Subprograms --
8454   ----------------------------------
8455
8456   procedure Write_Entity_Flags (Id : Entity_Id; Prefix : String);
8457   --  Writes a series of entries giving a line for each flag that is
8458   --  set to True. Each line is prefixed by the given string.
8459
8460   procedure Write_Entity_Info (Id : Entity_Id; Prefix : String);
8461   --  A debugging procedure to write out information about an entity
8462
8463   procedure Write_Field6_Name  (Id : Entity_Id);
8464   procedure Write_Field7_Name  (Id : Entity_Id);
8465   procedure Write_Field8_Name  (Id : Entity_Id);
8466   procedure Write_Field9_Name  (Id : Entity_Id);
8467   procedure Write_Field10_Name (Id : Entity_Id);
8468   procedure Write_Field11_Name (Id : Entity_Id);
8469   procedure Write_Field12_Name (Id : Entity_Id);
8470   procedure Write_Field13_Name (Id : Entity_Id);
8471   procedure Write_Field14_Name (Id : Entity_Id);
8472   procedure Write_Field15_Name (Id : Entity_Id);
8473   procedure Write_Field16_Name (Id : Entity_Id);
8474   procedure Write_Field17_Name (Id : Entity_Id);
8475   procedure Write_Field18_Name (Id : Entity_Id);
8476   procedure Write_Field19_Name (Id : Entity_Id);
8477   procedure Write_Field20_Name (Id : Entity_Id);
8478   procedure Write_Field21_Name (Id : Entity_Id);
8479   procedure Write_Field22_Name (Id : Entity_Id);
8480   procedure Write_Field23_Name (Id : Entity_Id);
8481   procedure Write_Field24_Name (Id : Entity_Id);
8482   procedure Write_Field25_Name (Id : Entity_Id);
8483   procedure Write_Field26_Name (Id : Entity_Id);
8484   procedure Write_Field27_Name (Id : Entity_Id);
8485   procedure Write_Field28_Name (Id : Entity_Id);
8486   procedure Write_Field29_Name (Id : Entity_Id);
8487   procedure Write_Field30_Name (Id : Entity_Id);
8488   procedure Write_Field31_Name (Id : Entity_Id);
8489   procedure Write_Field32_Name (Id : Entity_Id);
8490   procedure Write_Field33_Name (Id : Entity_Id);
8491   procedure Write_Field34_Name (Id : Entity_Id);
8492   procedure Write_Field35_Name (Id : Entity_Id);
8493   procedure Write_Field36_Name (Id : Entity_Id);
8494   procedure Write_Field37_Name (Id : Entity_Id);
8495   procedure Write_Field38_Name (Id : Entity_Id);
8496   procedure Write_Field39_Name (Id : Entity_Id);
8497   procedure Write_Field40_Name (Id : Entity_Id);
8498   procedure Write_Field41_Name (Id : Entity_Id);
8499   --  These routines are used in Treepr to output a nice symbolic name for
8500   --  the given field, depending on the Ekind. No blanks or end of lines are
8501   --  output, just the characters of the field name.
8502
8503   --------------------
8504   -- Inline Pragmas --
8505   --------------------
8506
8507   --  Note that these inline pragmas are referenced by the XEINFO utility
8508   --  program in preparing the corresponding C header, and only those
8509   --  subprograms meeting the requirements documented in the section on
8510   --  XEINFO may be referenced in this section.
8511
8512   pragma Inline (Abstract_States);
8513   pragma Inline (Accept_Address);
8514   pragma Inline (Access_Disp_Table);
8515   pragma Inline (Access_Disp_Table_Elab_Flag);
8516   pragma Inline (Activation_Record_Component);
8517   pragma Inline (Actual_Subtype);
8518   pragma Inline (Address_Taken);
8519   pragma Inline (Alias);
8520   pragma Inline (Alignment);
8521   pragma Inline (Anonymous_Designated_Type);
8522   pragma Inline (Anonymous_Masters);
8523   pragma Inline (Anonymous_Object);
8524   pragma Inline (Associated_Entity);
8525   pragma Inline (Associated_Formal_Package);
8526   pragma Inline (Associated_Node_For_Itype);
8527   pragma Inline (Associated_Storage_Pool);
8528   pragma Inline (Barrier_Function);
8529   pragma Inline (BIP_Initialization_Call);
8530   pragma Inline (Block_Node);
8531   pragma Inline (Body_Entity);
8532   pragma Inline (Body_Needed_For_Inlining);
8533   pragma Inline (Body_Needed_For_SAL);
8534   pragma Inline (Body_References);
8535   pragma Inline (C_Pass_By_Copy);
8536   pragma Inline (Can_Never_Be_Null);
8537   pragma Inline (Can_Use_Internal_Rep);
8538   pragma Inline (Checks_May_Be_Suppressed);
8539   pragma Inline (Class_Wide_Clone);
8540   pragma Inline (Class_Wide_Type);
8541   pragma Inline (Cloned_Subtype);
8542   pragma Inline (Component_Bit_Offset);
8543   pragma Inline (Component_Clause);
8544   pragma Inline (Component_Size);
8545   pragma Inline (Component_Type);
8546   pragma Inline (Contains_Ignored_Ghost_Code);
8547   pragma Inline (Contract);
8548   pragma Inline (Contract_Wrapper);
8549   pragma Inline (Corresponding_Concurrent_Type);
8550   pragma Inline (Corresponding_Discriminant);
8551   pragma Inline (Corresponding_Equality);
8552   pragma Inline (Corresponding_Protected_Entry);
8553   pragma Inline (Corresponding_Record_Component);
8554   pragma Inline (Corresponding_Record_Type);
8555   pragma Inline (Corresponding_Remote_Type);
8556   pragma Inline (CR_Discriminant);
8557   pragma Inline (Current_Use_Clause);
8558   pragma Inline (Current_Value);
8559   pragma Inline (Debug_Info_Off);
8560   pragma Inline (Debug_Renaming_Link);
8561   pragma Inline (Default_Aspect_Component_Value);
8562   pragma Inline (Default_Aspect_Value);
8563   pragma Inline (Default_Expr_Function);
8564   pragma Inline (Default_Expressions_Processed);
8565   pragma Inline (Default_Value);
8566   pragma Inline (Delay_Cleanups);
8567   pragma Inline (Delay_Subprogram_Descriptors);
8568   pragma Inline (Delta_Value);
8569   pragma Inline (Dependent_Instances);
8570   pragma Inline (Depends_On_Private);
8571   pragma Inline (Derived_Type_Link);
8572   pragma Inline (Digits_Value);
8573   pragma Inline (Direct_Primitive_Operations);
8574   pragma Inline (Directly_Designated_Type);
8575   pragma Inline (Disable_Controlled);
8576   pragma Inline (Discard_Names);
8577   pragma Inline (Discriminal);
8578   pragma Inline (Discriminal_Link);
8579   pragma Inline (Discriminant_Checking_Func);
8580   pragma Inline (Discriminant_Constraint);
8581   pragma Inline (Discriminant_Default_Value);
8582   pragma Inline (Discriminant_Number);
8583   pragma Inline (Dispatch_Table_Wrappers);
8584   pragma Inline (DT_Entry_Count);
8585   pragma Inline (DT_Offset_To_Top_Func);
8586   pragma Inline (DT_Position);
8587   pragma Inline (DTC_Entity);
8588   pragma Inline (Elaborate_Body_Desirable);
8589   pragma Inline (Elaboration_Entity);
8590   pragma Inline (Elaboration_Entity_Required);
8591   pragma Inline (Encapsulating_State);
8592   pragma Inline (Enclosing_Scope);
8593   pragma Inline (Entry_Accepted);
8594   pragma Inline (Entry_Bodies_Array);
8595   pragma Inline (Entry_Cancel_Parameter);
8596   pragma Inline (Entry_Component);
8597   pragma Inline (Entry_Formal);
8598   pragma Inline (Entry_Index_Constant);
8599   pragma Inline (Entry_Index_Type);
8600   pragma Inline (Entry_Parameters_Type);
8601   pragma Inline (Enum_Pos_To_Rep);
8602   pragma Inline (Enumeration_Pos);
8603   pragma Inline (Enumeration_Rep);
8604   pragma Inline (Enumeration_Rep_Expr);
8605   pragma Inline (Equivalent_Type);
8606   pragma Inline (Esize);
8607   pragma Inline (Extra_Accessibility);
8608   pragma Inline (Extra_Accessibility_Of_Result);
8609   pragma Inline (Extra_Constrained);
8610   pragma Inline (Extra_Formal);
8611   pragma Inline (Extra_Formals);
8612   pragma Inline (Finalization_Master);
8613   pragma Inline (Finalizer);
8614   pragma Inline (First_Entity);
8615   pragma Inline (First_Exit_Statement);
8616   pragma Inline (First_Index);
8617   pragma Inline (First_Literal);
8618   pragma Inline (First_Private_Entity);
8619   pragma Inline (First_Rep_Item);
8620   pragma Inline (Freeze_Node);
8621   pragma Inline (From_Limited_With);
8622   pragma Inline (Full_View);
8623   pragma Inline (Generic_Homonym);
8624   pragma Inline (Generic_Renamings);
8625   pragma Inline (Handler_Records);
8626   pragma Inline (Has_Aliased_Components);
8627   pragma Inline (Has_Alignment_Clause);
8628   pragma Inline (Has_All_Calls_Remote);
8629   pragma Inline (Has_Atomic_Components);
8630   pragma Inline (Has_Biased_Representation);
8631   pragma Inline (Has_Completion);
8632   pragma Inline (Has_Completion_In_Body);
8633   pragma Inline (Has_Complex_Representation);
8634   pragma Inline (Has_Component_Size_Clause);
8635   pragma Inline (Has_Constrained_Partial_View);
8636   pragma Inline (Has_Contiguous_Rep);
8637   pragma Inline (Has_Controlled_Component);
8638   pragma Inline (Has_Controlling_Result);
8639   pragma Inline (Has_Convention_Pragma);
8640   pragma Inline (Has_Default_Aspect);
8641   pragma Inline (Has_Delayed_Aspects);
8642   pragma Inline (Has_Delayed_Freeze);
8643   pragma Inline (Has_Delayed_Rep_Aspects);
8644   pragma Inline (Has_Discriminants);
8645   pragma Inline (Has_Dispatch_Table);
8646   pragma Inline (Has_Dynamic_Predicate_Aspect);
8647   pragma Inline (Has_Enumeration_Rep_Clause);
8648   pragma Inline (Has_Exit);
8649   pragma Inline (Has_Expanded_Contract);
8650   pragma Inline (Has_Forward_Instantiation);
8651   pragma Inline (Has_Fully_Qualified_Name);
8652   pragma Inline (Has_Gigi_Rep_Item);
8653   pragma Inline (Has_Homonym);
8654   pragma Inline (Has_Implicit_Dereference);
8655   pragma Inline (Has_Independent_Components);
8656   pragma Inline (Has_Inheritable_Invariants);
8657   pragma Inline (Has_Inherited_DIC);
8658   pragma Inline (Has_Inherited_Invariants);
8659   pragma Inline (Has_Initial_Value);
8660   pragma Inline (Has_Loop_Entry_Attributes);
8661   pragma Inline (Has_Machine_Radix_Clause);
8662   pragma Inline (Has_Master_Entity);
8663   pragma Inline (Has_Missing_Return);
8664   pragma Inline (Has_Nested_Block_With_Handler);
8665   pragma Inline (Has_Nested_Subprogram);
8666   pragma Inline (Has_Non_Standard_Rep);
8667   pragma Inline (Has_Object_Size_Clause);
8668   pragma Inline (Has_Out_Or_In_Out_Parameter);
8669   pragma Inline (Has_Own_DIC);
8670   pragma Inline (Has_Own_Invariants);
8671   pragma Inline (Has_Partial_Visible_Refinement);
8672   pragma Inline (Has_Per_Object_Constraint);
8673   pragma Inline (Has_Pragma_Controlled);
8674   pragma Inline (Has_Pragma_Elaborate_Body);
8675   pragma Inline (Has_Pragma_Inline);
8676   pragma Inline (Has_Pragma_Inline_Always);
8677   pragma Inline (Has_Pragma_No_Inline);
8678   pragma Inline (Has_Pragma_Ordered);
8679   pragma Inline (Has_Pragma_Pack);
8680   pragma Inline (Has_Pragma_Preelab_Init);
8681   pragma Inline (Has_Pragma_Pure);
8682   pragma Inline (Has_Pragma_Pure_Function);
8683   pragma Inline (Has_Pragma_Thread_Local_Storage);
8684   pragma Inline (Has_Pragma_Unmodified);
8685   pragma Inline (Has_Pragma_Unreferenced);
8686   pragma Inline (Has_Pragma_Unreferenced_Objects);
8687   pragma Inline (Has_Pragma_Unused);
8688   pragma Inline (Has_Predicates);
8689   pragma Inline (Has_Primitive_Operations);
8690   pragma Inline (Has_Private_Ancestor);
8691   pragma Inline (Has_Private_Declaration);
8692   pragma Inline (Has_Private_Extension);
8693   pragma Inline (Has_Protected);
8694   pragma Inline (Has_Qualified_Name);
8695   pragma Inline (Has_RACW);
8696   pragma Inline (Has_Record_Rep_Clause);
8697   pragma Inline (Has_Recursive_Call);
8698   pragma Inline (Has_Shift_Operator);
8699   pragma Inline (Has_Size_Clause);
8700   pragma Inline (Has_Small_Clause);
8701   pragma Inline (Has_Specified_Layout);
8702   pragma Inline (Has_Specified_Stream_Input);
8703   pragma Inline (Has_Specified_Stream_Output);
8704   pragma Inline (Has_Specified_Stream_Read);
8705   pragma Inline (Has_Specified_Stream_Write);
8706   pragma Inline (Has_Static_Discriminants);
8707   pragma Inline (Has_Static_Predicate);
8708   pragma Inline (Has_Static_Predicate_Aspect);
8709   pragma Inline (Has_Storage_Size_Clause);
8710   pragma Inline (Has_Stream_Size_Clause);
8711   pragma Inline (Has_Task);
8712   pragma Inline (Has_Timing_Event);
8713   pragma Inline (Has_Thunks);
8714   pragma Inline (Has_Unchecked_Union);
8715   pragma Inline (Has_Unknown_Discriminants);
8716   pragma Inline (Has_Visible_Refinement);
8717   pragma Inline (Has_Volatile_Components);
8718   pragma Inline (Has_Xref_Entry);
8719   pragma Inline (Hiding_Loop_Variable);
8720   pragma Inline (Homonym);
8721   pragma Inline (Ignore_SPARK_Mode_Pragmas);
8722   pragma Inline (Import_Pragma);
8723   pragma Inline (Incomplete_Actuals);
8724   pragma Inline (In_Package_Body);
8725   pragma Inline (In_Private_Part);
8726   pragma Inline (In_Use);
8727   pragma Inline (Inner_Instances);
8728   pragma Inline (Interface_Alias);
8729   pragma Inline (Interface_Name);
8730   pragma Inline (Interfaces);
8731   pragma Inline (Is_Abstract_Subprogram);
8732   pragma Inline (Is_Abstract_Type);
8733   pragma Inline (Is_Access_Constant);
8734   pragma Inline (Is_Actual_Subtype);
8735   pragma Inline (Is_Access_Protected_Subprogram_Type);
8736   pragma Inline (Is_Access_Subprogram_Type);
8737   pragma Inline (Is_Access_Type);
8738   pragma Inline (Is_Ada_2005_Only);
8739   pragma Inline (Is_Ada_2012_Only);
8740   pragma Inline (Is_Aggregate_Type);
8741   pragma Inline (Is_Aliased);
8742   pragma Inline (Is_Array_Type);
8743   pragma Inline (Is_Assignable);
8744   pragma Inline (Is_Asynchronous);
8745   pragma Inline (Is_Atomic);
8746   pragma Inline (Is_Atomic_Or_VFA);
8747   pragma Inline (Is_Bit_Packed_Array);
8748   pragma Inline (Is_Called);
8749   pragma Inline (Is_Character_Type);
8750   pragma Inline (Is_Checked_Ghost_Entity);
8751   pragma Inline (Is_Child_Unit);
8752   pragma Inline (Is_Class_Wide_Clone);
8753   pragma Inline (Is_Class_Wide_Equivalent_Type);
8754   pragma Inline (Is_Class_Wide_Type);
8755   pragma Inline (Is_Compilation_Unit);
8756   pragma Inline (Is_Completely_Hidden);
8757   pragma Inline (Is_Composite_Type);
8758   pragma Inline (Is_Concurrent_Body);
8759   pragma Inline (Is_Concurrent_Record_Type);
8760   pragma Inline (Is_Concurrent_Type);
8761   pragma Inline (Is_Constr_Subt_For_U_Nominal);
8762   pragma Inline (Is_Constr_Subt_For_UN_Aliased);
8763   pragma Inline (Is_Constrained);
8764   pragma Inline (Is_Constructor);
8765   pragma Inline (Is_Controlled_Active);
8766   pragma Inline (Is_Controlling_Formal);
8767   pragma Inline (Is_CPP_Class);
8768   pragma Inline (Is_Decimal_Fixed_Point_Type);
8769   pragma Inline (Is_Descendant_Of_Address);
8770   pragma Inline (Is_DIC_Procedure);
8771   pragma Inline (Is_Digits_Type);
8772   pragma Inline (Is_Discrete_Or_Fixed_Point_Type);
8773   pragma Inline (Is_Discrete_Type);
8774   pragma Inline (Is_Discrim_SO_Function);
8775   pragma Inline (Is_Discriminant_Check_Function);
8776   pragma Inline (Is_Dispatch_Table_Entity);
8777   pragma Inline (Is_Dispatching_Operation);
8778   pragma Inline (Is_Elaboration_Checks_OK_Id);
8779   pragma Inline (Is_Elementary_Type);
8780   pragma Inline (Is_Eliminated);
8781   pragma Inline (Is_Entry);
8782   pragma Inline (Is_Entry_Formal);
8783   pragma Inline (Is_Entry_Wrapper);
8784   pragma Inline (Is_Enumeration_Type);
8785   pragma Inline (Is_Exception_Handler);
8786   pragma Inline (Is_Exported);
8787   pragma Inline (Is_Finalized_Transient);
8788   pragma Inline (Is_First_Subtype);
8789   pragma Inline (Is_Fixed_Point_Type);
8790   pragma Inline (Is_Floating_Point_Type);
8791   pragma Inline (Is_For_Access_Subtype);
8792   pragma Inline (Is_Formal);
8793   pragma Inline (Is_Formal_Object);
8794   pragma Inline (Is_Formal_Subprogram);
8795   pragma Inline (Is_Frozen);
8796   pragma Inline (Is_Generic_Actual_Subprogram);
8797   pragma Inline (Is_Generic_Actual_Type);
8798   pragma Inline (Is_Generic_Instance);
8799   pragma Inline (Is_Generic_Subprogram);
8800   pragma Inline (Is_Generic_Type);
8801   pragma Inline (Is_Generic_Unit);
8802   pragma Inline (Is_Ghost_Entity);
8803   pragma Inline (Is_Hidden);
8804   pragma Inline (Is_Hidden_Non_Overridden_Subpgm);
8805   pragma Inline (Is_Hidden_Open_Scope);
8806   pragma Inline (Is_Ignored_Ghost_Entity);
8807   pragma Inline (Is_Ignored_Transient);
8808   pragma Inline (Is_Immediately_Visible);
8809   pragma Inline (Is_Implementation_Defined);
8810   pragma Inline (Is_Imported);
8811   pragma Inline (Is_Incomplete_Or_Private_Type);
8812   pragma Inline (Is_Incomplete_Type);
8813   pragma Inline (Is_Independent);
8814   pragma Inline (Is_Initial_Condition_Procedure);
8815   pragma Inline (Is_Inlined);
8816   pragma Inline (Is_Inlined_Always);
8817   pragma Inline (Is_Instantiated);
8818   pragma Inline (Is_Integer_Type);
8819   pragma Inline (Is_Interface);
8820   pragma Inline (Is_Internal);
8821   pragma Inline (Is_Interrupt_Handler);
8822   pragma Inline (Is_Intrinsic_Subprogram);
8823   pragma Inline (Is_Invariant_Procedure);
8824   pragma Inline (Is_Itype);
8825   pragma Inline (Is_Known_Non_Null);
8826   pragma Inline (Is_Known_Null);
8827   pragma Inline (Is_Known_Valid);
8828   pragma Inline (Is_Limited_Composite);
8829   pragma Inline (Is_Limited_Interface);
8830   pragma Inline (Is_Limited_Record);
8831   pragma Inline (Is_Local_Anonymous_Access);
8832   pragma Inline (Is_Machine_Code_Subprogram);
8833   pragma Inline (Is_Modular_Integer_Type);
8834   pragma Inline (Is_Named_Number);
8835   pragma Inline (Is_Non_Static_Subtype);
8836   pragma Inline (Is_Null_Init_Proc);
8837   pragma Inline (Is_Numeric_Type);
8838   pragma Inline (Is_Object);
8839   pragma Inline (Is_Obsolescent);
8840   pragma Inline (Is_Only_Out_Parameter);
8841   pragma Inline (Is_Ordinary_Fixed_Point_Type);
8842   pragma Inline (Is_Overloadable);
8843   pragma Inline (Is_Package_Body_Entity);
8844   pragma Inline (Is_Packed);
8845   pragma Inline (Is_Packed_Array_Impl_Type);
8846   pragma Inline (Is_Param_Block_Component_Type);
8847   pragma Inline (Is_Partial_Invariant_Procedure);
8848   pragma Inline (Is_Potentially_Use_Visible);
8849   pragma Inline (Is_Predicate_Function);
8850   pragma Inline (Is_Predicate_Function_M);
8851   pragma Inline (Is_Preelaborated);
8852   pragma Inline (Is_Primitive);
8853   pragma Inline (Is_Primitive_Wrapper);
8854   pragma Inline (Is_Private_Composite);
8855   pragma Inline (Is_Private_Descendant);
8856   pragma Inline (Is_Private_Primitive);
8857   pragma Inline (Is_Private_Type);
8858   pragma Inline (Is_Protected_Type);
8859   pragma Inline (Is_Public);
8860   pragma Inline (Is_Pure);
8861   pragma Inline (Is_Pure_Unit_Access_Type);
8862   pragma Inline (Is_RACW_Stub_Type);
8863   pragma Inline (Is_Raised);
8864   pragma Inline (Is_Real_Type);
8865   pragma Inline (Is_Record_Type);
8866   pragma Inline (Is_Remote_Call_Interface);
8867   pragma Inline (Is_Remote_Types);
8868   pragma Inline (Is_Renaming_Of_Object);
8869   pragma Inline (Is_Return_Object);
8870   pragma Inline (Is_Safe_To_Reevaluate);
8871   pragma Inline (Is_Scalar_Type);
8872   pragma Inline (Is_Shared_Passive);
8873   pragma Inline (Is_Signed_Integer_Type);
8874   pragma Inline (Is_Static_Type);
8875   pragma Inline (Is_Statically_Allocated);
8876   pragma Inline (Is_Subprogram);
8877   pragma Inline (Is_Tag);
8878   pragma Inline (Is_Tagged_Type);
8879   pragma Inline (Is_Task_Type);
8880   pragma Inline (Is_Thunk);
8881   pragma Inline (Is_Trivial_Subprogram);
8882   pragma Inline (Is_True_Constant);
8883   pragma Inline (Is_Type);
8884   pragma Inline (Is_Unchecked_Union);
8885   pragma Inline (Is_Underlying_Full_View);
8886   pragma Inline (Is_Underlying_Record_View);
8887   pragma Inline (Is_Unimplemented);
8888   pragma Inline (Is_Unsigned_Type);
8889   pragma Inline (Is_Uplevel_Referenced_Entity);
8890   pragma Inline (Is_Valued_Procedure);
8891   pragma Inline (Is_Visible_Formal);
8892   pragma Inline (Is_Visible_Lib_Unit);
8893   pragma Inline (Is_Volatile_Full_Access);
8894   pragma Inline (Itype_Printed);
8895   pragma Inline (Kill_Elaboration_Checks);
8896   pragma Inline (Kill_Range_Checks);
8897   pragma Inline (Known_To_Have_Preelab_Init);
8898   pragma Inline (Last_Aggregate_Assignment);
8899   pragma Inline (Last_Assignment);
8900   pragma Inline (Last_Entity);
8901   pragma Inline (Limited_View);
8902   pragma Inline (Linker_Section_Pragma);
8903   pragma Inline (Lit_Indexes);
8904   pragma Inline (Lit_Strings);
8905   pragma Inline (Low_Bound_Tested);
8906   pragma Inline (Machine_Radix_10);
8907   pragma Inline (Master_Id);
8908   pragma Inline (Materialize_Entity);
8909   pragma Inline (May_Inherit_Delayed_Rep_Aspects);
8910   pragma Inline (Mechanism);
8911   pragma Inline (Modulus);
8912   pragma Inline (Must_Be_On_Byte_Boundary);
8913   pragma Inline (Must_Have_Preelab_Init);
8914   pragma Inline (Needs_Debug_Info);
8915   pragma Inline (Needs_No_Actuals);
8916   pragma Inline (Nested_Scenarios);
8917   pragma Inline (Never_Set_In_Source);
8918   pragma Inline (Next_Index);
8919   pragma Inline (Next_Inlined_Subprogram);
8920   pragma Inline (Next_Literal);
8921   pragma Inline (No_Dynamic_Predicate_On_Actual);
8922   pragma Inline (No_Pool_Assigned);
8923   pragma Inline (No_Predicate_On_Actual);
8924   pragma Inline (No_Reordering);
8925   pragma Inline (No_Return);
8926   pragma Inline (No_Strict_Aliasing);
8927   pragma Inline (No_Tagged_Streams_Pragma);
8928   pragma Inline (Non_Binary_Modulus);
8929   pragma Inline (Non_Limited_View);
8930   pragma Inline (Nonzero_Is_True);
8931   pragma Inline (Normalized_First_Bit);
8932   pragma Inline (Normalized_Position);
8933   pragma Inline (Normalized_Position_Max);
8934   pragma Inline (OK_To_Rename);
8935   pragma Inline (Optimize_Alignment_Space);
8936   pragma Inline (Optimize_Alignment_Time);
8937   pragma Inline (Original_Access_Type);
8938   pragma Inline (Original_Array_Type);
8939   pragma Inline (Original_Protected_Subprogram);
8940   pragma Inline (Original_Record_Component);
8941   pragma Inline (Overlays_Constant);
8942   pragma Inline (Overridden_Operation);
8943   pragma Inline (Package_Instantiation);
8944   pragma Inline (Packed_Array_Impl_Type);
8945   pragma Inline (Parameter_Mode);
8946   pragma Inline (Parent_Subtype);
8947   pragma Inline (Part_Of_Constituents);
8948   pragma Inline (Part_Of_References);
8949   pragma Inline (Partial_View_Has_Unknown_Discr);
8950   pragma Inline (Pending_Access_Types);
8951   pragma Inline (Postconditions_Proc);
8952   pragma Inline (Predicates_Ignored);
8953   pragma Inline (Prival);
8954   pragma Inline (Prival_Link);
8955   pragma Inline (Private_Dependents);
8956   pragma Inline (Private_View);
8957   pragma Inline (Protected_Body_Subprogram);
8958   pragma Inline (Protected_Formal);
8959   pragma Inline (Protected_Subprogram);
8960   pragma Inline (Protection_Object);
8961   pragma Inline (Reachable);
8962   pragma Inline (Receiving_Entry);
8963   pragma Inline (Referenced);
8964   pragma Inline (Referenced_As_LHS);
8965   pragma Inline (Referenced_As_Out_Parameter);
8966   pragma Inline (Refinement_Constituents);
8967   pragma Inline (Register_Exception_Call);
8968   pragma Inline (Related_Array_Object);
8969   pragma Inline (Related_Expression);
8970   pragma Inline (Related_Instance);
8971   pragma Inline (Related_Type);
8972   pragma Inline (Relative_Deadline_Variable);
8973   pragma Inline (Renamed_Entity);
8974   pragma Inline (Renamed_In_Spec);
8975   pragma Inline (Renamed_Object);
8976   pragma Inline (Renaming_Map);
8977   pragma Inline (Requires_Overriding);
8978   pragma Inline (Return_Applies_To);
8979   pragma Inline (Return_Present);
8980   pragma Inline (Returns_By_Ref);
8981   pragma Inline (Reverse_Bit_Order);
8982   pragma Inline (Reverse_Storage_Order);
8983   pragma Inline (Rewritten_For_C);
8984   pragma Inline (RM_Size);
8985   pragma Inline (Scalar_Range);
8986   pragma Inline (Scale_Value);
8987   pragma Inline (Scope_Depth_Value);
8988   pragma Inline (Sec_Stack_Needed_For_Return);
8989   pragma Inline (Shadow_Entities);
8990   pragma Inline (Shared_Var_Procs_Instance);
8991   pragma Inline (Size_Check_Code);
8992   pragma Inline (Size_Depends_On_Discriminant);
8993   pragma Inline (Size_Known_At_Compile_Time);
8994   pragma Inline (Small_Value);
8995   pragma Inline (SPARK_Aux_Pragma);
8996   pragma Inline (SPARK_Aux_Pragma_Inherited);
8997   pragma Inline (SPARK_Pragma);
8998   pragma Inline (SPARK_Pragma_Inherited);
8999   pragma Inline (Spec_Entity);
9000   pragma Inline (SSO_Set_High_By_Default);
9001   pragma Inline (SSO_Set_Low_By_Default);
9002   pragma Inline (Static_Discrete_Predicate);
9003   pragma Inline (Static_Elaboration_Desired);
9004   pragma Inline (Static_Initialization);
9005   pragma Inline (Static_Real_Or_String_Predicate);
9006   pragma Inline (Status_Flag_Or_Transient_Decl);
9007   pragma Inline (Storage_Size_Variable);
9008   pragma Inline (Stored_Constraint);
9009   pragma Inline (Stores_Attribute_Old_Prefix);
9010   pragma Inline (Strict_Alignment);
9011   pragma Inline (String_Literal_Length);
9012   pragma Inline (String_Literal_Low_Bound);
9013   pragma Inline (Subprograms_For_Type);
9014   pragma Inline (Subps_Index);
9015   pragma Inline (Suppress_Elaboration_Warnings);
9016   pragma Inline (Suppress_Initialization);
9017   pragma Inline (Suppress_Style_Checks);
9018   pragma Inline (Suppress_Value_Tracking_On_Call);
9019   pragma Inline (Task_Body_Procedure);
9020   pragma Inline (Thunk_Entity);
9021   pragma Inline (Treat_As_Volatile);
9022   pragma Inline (Underlying_Full_View);
9023   pragma Inline (Underlying_Record_View);
9024   pragma Inline (Universal_Aliasing);
9025   pragma Inline (Unset_Reference);
9026   pragma Inline (Used_As_Generic_Actual);
9027   pragma Inline (Uses_Lock_Free);
9028   pragma Inline (Uses_Sec_Stack);
9029   pragma Inline (Validated_Object);
9030   pragma Inline (Warnings_Off);
9031   pragma Inline (Warnings_Off_Used);
9032   pragma Inline (Warnings_Off_Used_Unmodified);
9033   pragma Inline (Warnings_Off_Used_Unreferenced);
9034   pragma Inline (Was_Hidden);
9035   pragma Inline (Wrapped_Entity);
9036
9037   pragma Inline (Init_Alignment);
9038   pragma Inline (Init_Component_Bit_Offset);
9039   pragma Inline (Init_Component_Size);
9040   pragma Inline (Init_Digits_Value);
9041   pragma Inline (Init_Esize);
9042   pragma Inline (Init_RM_Size);
9043
9044   pragma Inline (Set_Abstract_States);
9045   pragma Inline (Set_Accept_Address);
9046   pragma Inline (Set_Access_Disp_Table);
9047   pragma Inline (Set_Access_Disp_Table_Elab_Flag);
9048   pragma Inline (Set_Activation_Record_Component);
9049   pragma Inline (Set_Actual_Subtype);
9050   pragma Inline (Set_Address_Taken);
9051   pragma Inline (Set_Alias);
9052   pragma Inline (Set_Alignment);
9053   pragma Inline (Set_Anonymous_Designated_Type);
9054   pragma Inline (Set_Anonymous_Masters);
9055   pragma Inline (Set_Anonymous_Object);
9056   pragma Inline (Set_Associated_Entity);
9057   pragma Inline (Set_Associated_Formal_Package);
9058   pragma Inline (Set_Associated_Node_For_Itype);
9059   pragma Inline (Set_Associated_Storage_Pool);
9060   pragma Inline (Set_Barrier_Function);
9061   pragma Inline (Set_BIP_Initialization_Call);
9062   pragma Inline (Set_Block_Node);
9063   pragma Inline (Set_Body_Entity);
9064   pragma Inline (Set_Body_Needed_For_Inlining);
9065   pragma Inline (Set_Body_Needed_For_SAL);
9066   pragma Inline (Set_Body_References);
9067   pragma Inline (Set_C_Pass_By_Copy);
9068   pragma Inline (Set_Can_Never_Be_Null);
9069   pragma Inline (Set_Can_Use_Internal_Rep);
9070   pragma Inline (Set_Checks_May_Be_Suppressed);
9071   pragma Inline (Set_Class_Wide_Clone);
9072   pragma Inline (Set_Class_Wide_Type);
9073   pragma Inline (Set_Cloned_Subtype);
9074   pragma Inline (Set_Component_Bit_Offset);
9075   pragma Inline (Set_Component_Clause);
9076   pragma Inline (Set_Component_Size);
9077   pragma Inline (Set_Component_Type);
9078   pragma Inline (Set_Contains_Ignored_Ghost_Code);
9079   pragma Inline (Set_Contract);
9080   pragma Inline (Set_Contract_Wrapper);
9081   pragma Inline (Set_Corresponding_Concurrent_Type);
9082   pragma Inline (Set_Corresponding_Discriminant);
9083   pragma Inline (Set_Corresponding_Equality);
9084   pragma Inline (Set_Corresponding_Protected_Entry);
9085   pragma Inline (Set_Corresponding_Record_Component);
9086   pragma Inline (Set_Corresponding_Record_Type);
9087   pragma Inline (Set_Corresponding_Remote_Type);
9088   pragma Inline (Set_CR_Discriminant);
9089   pragma Inline (Set_Current_Use_Clause);
9090   pragma Inline (Set_Current_Value);
9091   pragma Inline (Set_Debug_Info_Off);
9092   pragma Inline (Set_Debug_Renaming_Link);
9093   pragma Inline (Set_Default_Aspect_Component_Value);
9094   pragma Inline (Set_Default_Aspect_Value);
9095   pragma Inline (Set_Default_Expr_Function);
9096   pragma Inline (Set_Default_Expressions_Processed);
9097   pragma Inline (Set_Default_Value);
9098   pragma Inline (Set_Delay_Cleanups);
9099   pragma Inline (Set_Delay_Subprogram_Descriptors);
9100   pragma Inline (Set_Delta_Value);
9101   pragma Inline (Set_Dependent_Instances);
9102   pragma Inline (Set_Depends_On_Private);
9103   pragma Inline (Set_Derived_Type_Link);
9104   pragma Inline (Set_Digits_Value);
9105   pragma Inline (Set_Direct_Primitive_Operations);
9106   pragma Inline (Set_Directly_Designated_Type);
9107   pragma Inline (Set_Disable_Controlled);
9108   pragma Inline (Set_Discard_Names);
9109   pragma Inline (Set_Discriminal);
9110   pragma Inline (Set_Discriminal_Link);
9111   pragma Inline (Set_Discriminant_Checking_Func);
9112   pragma Inline (Set_Discriminant_Constraint);
9113   pragma Inline (Set_Discriminant_Default_Value);
9114   pragma Inline (Set_Discriminant_Number);
9115   pragma Inline (Set_Dispatch_Table_Wrappers);
9116   pragma Inline (Set_DT_Entry_Count);
9117   pragma Inline (Set_DT_Offset_To_Top_Func);
9118   pragma Inline (Set_DT_Position);
9119   pragma Inline (Set_DTC_Entity);
9120   pragma Inline (Set_Elaborate_Body_Desirable);
9121   pragma Inline (Set_Elaboration_Entity);
9122   pragma Inline (Set_Elaboration_Entity_Required);
9123   pragma Inline (Set_Encapsulating_State);
9124   pragma Inline (Set_Enclosing_Scope);
9125   pragma Inline (Set_Entry_Accepted);
9126   pragma Inline (Set_Entry_Bodies_Array);
9127   pragma Inline (Set_Entry_Cancel_Parameter);
9128   pragma Inline (Set_Entry_Component);
9129   pragma Inline (Set_Entry_Formal);
9130   pragma Inline (Set_Entry_Max_Queue_Lengths_Array);
9131   pragma Inline (Set_Entry_Parameters_Type);
9132   pragma Inline (Set_Enum_Pos_To_Rep);
9133   pragma Inline (Set_Enumeration_Pos);
9134   pragma Inline (Set_Enumeration_Rep);
9135   pragma Inline (Set_Enumeration_Rep_Expr);
9136   pragma Inline (Set_Equivalent_Type);
9137   pragma Inline (Set_Esize);
9138   pragma Inline (Set_Extra_Accessibility);
9139   pragma Inline (Set_Extra_Accessibility_Of_Result);
9140   pragma Inline (Set_Extra_Constrained);
9141   pragma Inline (Set_Extra_Formal);
9142   pragma Inline (Set_Extra_Formals);
9143   pragma Inline (Set_Finalization_Master);
9144   pragma Inline (Set_Finalizer);
9145   pragma Inline (Set_First_Entity);
9146   pragma Inline (Set_First_Exit_Statement);
9147   pragma Inline (Set_First_Index);
9148   pragma Inline (Set_First_Literal);
9149   pragma Inline (Set_First_Private_Entity);
9150   pragma Inline (Set_First_Rep_Item);
9151   pragma Inline (Set_Freeze_Node);
9152   pragma Inline (Set_From_Limited_With);
9153   pragma Inline (Set_Full_View);
9154   pragma Inline (Set_Generic_Homonym);
9155   pragma Inline (Set_Generic_Renamings);
9156   pragma Inline (Set_Handler_Records);
9157   pragma Inline (Set_Has_Aliased_Components);
9158   pragma Inline (Set_Has_Alignment_Clause);
9159   pragma Inline (Set_Has_All_Calls_Remote);
9160   pragma Inline (Set_Has_Atomic_Components);
9161   pragma Inline (Set_Has_Biased_Representation);
9162   pragma Inline (Set_Has_Completion);
9163   pragma Inline (Set_Has_Completion_In_Body);
9164   pragma Inline (Set_Has_Complex_Representation);
9165   pragma Inline (Set_Has_Component_Size_Clause);
9166   pragma Inline (Set_Has_Constrained_Partial_View);
9167   pragma Inline (Set_Has_Contiguous_Rep);
9168   pragma Inline (Set_Has_Controlled_Component);
9169   pragma Inline (Set_Has_Controlling_Result);
9170   pragma Inline (Set_Has_Convention_Pragma);
9171   pragma Inline (Set_Has_Default_Aspect);
9172   pragma Inline (Set_Has_Delayed_Aspects);
9173   pragma Inline (Set_Has_Delayed_Freeze);
9174   pragma Inline (Set_Has_Delayed_Rep_Aspects);
9175   pragma Inline (Set_Has_Discriminants);
9176   pragma Inline (Set_Has_Dispatch_Table);
9177   pragma Inline (Set_Has_Dynamic_Predicate_Aspect);
9178   pragma Inline (Set_Has_Enumeration_Rep_Clause);
9179   pragma Inline (Set_Has_Exit);
9180   pragma Inline (Set_Has_Expanded_Contract);
9181   pragma Inline (Set_Has_Forward_Instantiation);
9182   pragma Inline (Set_Has_Fully_Qualified_Name);
9183   pragma Inline (Set_Has_Gigi_Rep_Item);
9184   pragma Inline (Set_Has_Homonym);
9185   pragma Inline (Set_Has_Implicit_Dereference);
9186   pragma Inline (Set_Has_Independent_Components);
9187   pragma Inline (Set_Has_Inheritable_Invariants);
9188   pragma Inline (Set_Has_Inherited_DIC);
9189   pragma Inline (Set_Has_Inherited_Invariants);
9190   pragma Inline (Set_Has_Initial_Value);
9191   pragma Inline (Set_Has_Loop_Entry_Attributes);
9192   pragma Inline (Set_Has_Machine_Radix_Clause);
9193   pragma Inline (Set_Has_Master_Entity);
9194   pragma Inline (Set_Has_Missing_Return);
9195   pragma Inline (Set_Has_Nested_Block_With_Handler);
9196   pragma Inline (Set_Has_Nested_Subprogram);
9197   pragma Inline (Set_Has_Non_Standard_Rep);
9198   pragma Inline (Set_Has_Object_Size_Clause);
9199   pragma Inline (Set_Has_Out_Or_In_Out_Parameter);
9200   pragma Inline (Set_Has_Own_DIC);
9201   pragma Inline (Set_Has_Own_Invariants);
9202   pragma Inline (Set_Has_Partial_Visible_Refinement);
9203   pragma Inline (Set_Has_Per_Object_Constraint);
9204   pragma Inline (Set_Has_Pragma_Controlled);
9205   pragma Inline (Set_Has_Pragma_Elaborate_Body);
9206   pragma Inline (Set_Has_Pragma_Inline);
9207   pragma Inline (Set_Has_Pragma_Inline_Always);
9208   pragma Inline (Set_Has_Pragma_No_Inline);
9209   pragma Inline (Set_Has_Pragma_Ordered);
9210   pragma Inline (Set_Has_Pragma_Pack);
9211   pragma Inline (Set_Has_Pragma_Preelab_Init);
9212   pragma Inline (Set_Has_Pragma_Pure);
9213   pragma Inline (Set_Has_Pragma_Pure_Function);
9214   pragma Inline (Set_Has_Pragma_Thread_Local_Storage);
9215   pragma Inline (Set_Has_Pragma_Unmodified);
9216   pragma Inline (Set_Has_Pragma_Unreferenced);
9217   pragma Inline (Set_Has_Pragma_Unreferenced_Objects);
9218   pragma Inline (Set_Has_Predicates);
9219   pragma Inline (Set_Has_Primitive_Operations);
9220   pragma Inline (Set_Has_Private_Ancestor);
9221   pragma Inline (Set_Has_Private_Declaration);
9222   pragma Inline (Set_Has_Private_Extension);
9223   pragma Inline (Set_Has_Protected);
9224   pragma Inline (Set_Has_Qualified_Name);
9225   pragma Inline (Set_Has_RACW);
9226   pragma Inline (Set_Has_Record_Rep_Clause);
9227   pragma Inline (Set_Has_Recursive_Call);
9228   pragma Inline (Set_Has_Shift_Operator);
9229   pragma Inline (Set_Has_Size_Clause);
9230   pragma Inline (Set_Has_Small_Clause);
9231   pragma Inline (Set_Has_Specified_Layout);
9232   pragma Inline (Set_Has_Specified_Stream_Input);
9233   pragma Inline (Set_Has_Specified_Stream_Output);
9234   pragma Inline (Set_Has_Specified_Stream_Read);
9235   pragma Inline (Set_Has_Specified_Stream_Write);
9236   pragma Inline (Set_Has_Static_Discriminants);
9237   pragma Inline (Set_Has_Static_Predicate);
9238   pragma Inline (Set_Has_Static_Predicate_Aspect);
9239   pragma Inline (Set_Has_Storage_Size_Clause);
9240   pragma Inline (Set_Has_Stream_Size_Clause);
9241   pragma Inline (Set_Has_Task);
9242   pragma Inline (Set_Has_Timing_Event);
9243   pragma Inline (Set_Has_Thunks);
9244   pragma Inline (Set_Has_Unchecked_Union);
9245   pragma Inline (Set_Has_Unknown_Discriminants);
9246   pragma Inline (Set_Has_Visible_Refinement);
9247   pragma Inline (Set_Has_Volatile_Components);
9248   pragma Inline (Set_Has_Xref_Entry);
9249   pragma Inline (Set_Hiding_Loop_Variable);
9250   pragma Inline (Set_Homonym);
9251   pragma Inline (Set_Ignore_SPARK_Mode_Pragmas);
9252   pragma Inline (Set_Import_Pragma);
9253   pragma Inline (Set_Incomplete_Actuals);
9254   pragma Inline (Set_In_Package_Body);
9255   pragma Inline (Set_In_Private_Part);
9256   pragma Inline (Set_In_Use);
9257   pragma Inline (Set_Inner_Instances);
9258   pragma Inline (Set_Interface_Alias);
9259   pragma Inline (Set_Interface_Name);
9260   pragma Inline (Set_Interfaces);
9261   pragma Inline (Set_Is_Abstract_Subprogram);
9262   pragma Inline (Set_Is_Abstract_Type);
9263   pragma Inline (Set_Is_Access_Constant);
9264   pragma Inline (Set_Is_Actual_Subtype);
9265   pragma Inline (Set_Is_Ada_2005_Only);
9266   pragma Inline (Set_Is_Ada_2012_Only);
9267   pragma Inline (Set_Is_Aliased);
9268   pragma Inline (Set_Is_Asynchronous);
9269   pragma Inline (Set_Is_Atomic);
9270   pragma Inline (Set_Is_Bit_Packed_Array);
9271   pragma Inline (Set_Is_Called);
9272   pragma Inline (Set_Is_Character_Type);
9273   pragma Inline (Set_Is_Checked_Ghost_Entity);
9274   pragma Inline (Set_Is_Child_Unit);
9275   pragma Inline (Set_Is_Class_Wide_Clone);
9276   pragma Inline (Set_Is_Class_Wide_Equivalent_Type);
9277   pragma Inline (Set_Is_Compilation_Unit);
9278   pragma Inline (Set_Is_Completely_Hidden);
9279   pragma Inline (Set_Is_Concurrent_Record_Type);
9280   pragma Inline (Set_Is_Constr_Subt_For_U_Nominal);
9281   pragma Inline (Set_Is_Constr_Subt_For_UN_Aliased);
9282   pragma Inline (Set_Is_Constrained);
9283   pragma Inline (Set_Is_Constructor);
9284   pragma Inline (Set_Is_Controlled_Active);
9285   pragma Inline (Set_Is_Controlling_Formal);
9286   pragma Inline (Set_Is_CPP_Class);
9287   pragma Inline (Set_Is_Descendant_Of_Address);
9288   pragma Inline (Set_Is_DIC_Procedure);
9289   pragma Inline (Set_Is_Discrim_SO_Function);
9290   pragma Inline (Set_Is_Discriminant_Check_Function);
9291   pragma Inline (Set_Is_Dispatch_Table_Entity);
9292   pragma Inline (Set_Is_Dispatching_Operation);
9293   pragma Inline (Set_Is_Elaboration_Checks_OK_Id);
9294   pragma Inline (Set_Is_Eliminated);
9295   pragma Inline (Set_Is_Entry_Formal);
9296   pragma Inline (Set_Is_Entry_Wrapper);
9297   pragma Inline (Set_Is_Exception_Handler);
9298   pragma Inline (Set_Is_Exported);
9299   pragma Inline (Set_Is_Finalized_Transient);
9300   pragma Inline (Set_Is_First_Subtype);
9301   pragma Inline (Set_Is_For_Access_Subtype);
9302   pragma Inline (Set_Is_Formal_Subprogram);
9303   pragma Inline (Set_Is_Frozen);
9304   pragma Inline (Set_Is_Generic_Actual_Subprogram);
9305   pragma Inline (Set_Is_Generic_Actual_Type);
9306   pragma Inline (Set_Is_Generic_Instance);
9307   pragma Inline (Set_Is_Generic_Type);
9308   pragma Inline (Set_Is_Hidden);
9309   pragma Inline (Set_Is_Hidden_Non_Overridden_Subpgm);
9310   pragma Inline (Set_Is_Hidden_Open_Scope);
9311   pragma Inline (Set_Is_Ignored_Ghost_Entity);
9312   pragma Inline (Set_Is_Ignored_Transient);
9313   pragma Inline (Set_Is_Immediately_Visible);
9314   pragma Inline (Set_Is_Implementation_Defined);
9315   pragma Inline (Set_Is_Imported);
9316   pragma Inline (Set_Is_Independent);
9317   pragma Inline (Set_Is_Initial_Condition_Procedure);
9318   pragma Inline (Set_Is_Inlined);
9319   pragma Inline (Set_Is_Inlined_Always);
9320   pragma Inline (Set_Is_Instantiated);
9321   pragma Inline (Set_Is_Interface);
9322   pragma Inline (Set_Is_Internal);
9323   pragma Inline (Set_Is_Interrupt_Handler);
9324   pragma Inline (Set_Is_Intrinsic_Subprogram);
9325   pragma Inline (Set_Is_Invariant_Procedure);
9326   pragma Inline (Set_Is_Itype);
9327   pragma Inline (Set_Is_Known_Non_Null);
9328   pragma Inline (Set_Is_Known_Null);
9329   pragma Inline (Set_Is_Known_Valid);
9330   pragma Inline (Set_Is_Limited_Composite);
9331   pragma Inline (Set_Is_Limited_Interface);
9332   pragma Inline (Set_Is_Limited_Record);
9333   pragma Inline (Set_Is_Local_Anonymous_Access);
9334   pragma Inline (Set_Is_Machine_Code_Subprogram);
9335   pragma Inline (Set_Is_Non_Static_Subtype);
9336   pragma Inline (Set_Is_Null_Init_Proc);
9337   pragma Inline (Set_Is_Obsolescent);
9338   pragma Inline (Set_Is_Only_Out_Parameter);
9339   pragma Inline (Set_Is_Package_Body_Entity);
9340   pragma Inline (Set_Is_Packed);
9341   pragma Inline (Set_Is_Packed_Array_Impl_Type);
9342   pragma Inline (Set_Is_Param_Block_Component_Type);
9343   pragma Inline (Set_Is_Partial_Invariant_Procedure);
9344   pragma Inline (Set_Is_Potentially_Use_Visible);
9345   pragma Inline (Set_Is_Predicate_Function);
9346   pragma Inline (Set_Is_Predicate_Function_M);
9347   pragma Inline (Set_Is_Preelaborated);
9348   pragma Inline (Set_Is_Primitive);
9349   pragma Inline (Set_Is_Primitive_Wrapper);
9350   pragma Inline (Set_Is_Private_Composite);
9351   pragma Inline (Set_Is_Private_Descendant);
9352   pragma Inline (Set_Is_Private_Primitive);
9353   pragma Inline (Set_Is_Public);
9354   pragma Inline (Set_Is_Pure);
9355   pragma Inline (Set_Is_Pure_Unit_Access_Type);
9356   pragma Inline (Set_Is_RACW_Stub_Type);
9357   pragma Inline (Set_Is_Raised);
9358   pragma Inline (Set_Is_Remote_Call_Interface);
9359   pragma Inline (Set_Is_Remote_Types);
9360   pragma Inline (Set_Is_Renaming_Of_Object);
9361   pragma Inline (Set_Is_Return_Object);
9362   pragma Inline (Set_Is_Safe_To_Reevaluate);
9363   pragma Inline (Set_Is_Shared_Passive);
9364   pragma Inline (Set_Is_Static_Type);
9365   pragma Inline (Set_Is_Statically_Allocated);
9366   pragma Inline (Set_Is_Tag);
9367   pragma Inline (Set_Is_Tagged_Type);
9368   pragma Inline (Set_Is_Thunk);
9369   pragma Inline (Set_Is_Trivial_Subprogram);
9370   pragma Inline (Set_Is_True_Constant);
9371   pragma Inline (Set_Is_Unchecked_Union);
9372   pragma Inline (Set_Is_Underlying_Full_View);
9373   pragma Inline (Set_Is_Underlying_Record_View);
9374   pragma Inline (Set_Is_Unimplemented);
9375   pragma Inline (Set_Is_Unsigned_Type);
9376   pragma Inline (Set_Is_Uplevel_Referenced_Entity);
9377   pragma Inline (Set_Is_Valued_Procedure);
9378   pragma Inline (Set_Is_Visible_Formal);
9379   pragma Inline (Set_Is_Visible_Lib_Unit);
9380   pragma Inline (Set_Is_Volatile);
9381   pragma Inline (Set_Is_Volatile_Full_Access);
9382   pragma Inline (Set_Itype_Printed);
9383   pragma Inline (Set_Kill_Elaboration_Checks);
9384   pragma Inline (Set_Kill_Range_Checks);
9385   pragma Inline (Set_Known_To_Have_Preelab_Init);
9386   pragma Inline (Set_Last_Aggregate_Assignment);
9387   pragma Inline (Set_Last_Assignment);
9388   pragma Inline (Set_Last_Entity);
9389   pragma Inline (Set_Limited_View);
9390   pragma Inline (Set_Linker_Section_Pragma);
9391   pragma Inline (Set_Lit_Indexes);
9392   pragma Inline (Set_Lit_Strings);
9393   pragma Inline (Set_Low_Bound_Tested);
9394   pragma Inline (Set_Machine_Radix_10);
9395   pragma Inline (Set_Master_Id);
9396   pragma Inline (Set_Materialize_Entity);
9397   pragma Inline (Set_May_Inherit_Delayed_Rep_Aspects);
9398   pragma Inline (Set_Mechanism);
9399   pragma Inline (Set_Modulus);
9400   pragma Inline (Set_Must_Be_On_Byte_Boundary);
9401   pragma Inline (Set_Must_Have_Preelab_Init);
9402   pragma Inline (Set_Needs_Debug_Info);
9403   pragma Inline (Set_Needs_No_Actuals);
9404   pragma Inline (Set_Nested_Scenarios);
9405   pragma Inline (Set_Never_Set_In_Source);
9406   pragma Inline (Set_Next_Inlined_Subprogram);
9407   pragma Inline (Set_No_Dynamic_Predicate_On_Actual);
9408   pragma Inline (Set_No_Pool_Assigned);
9409   pragma Inline (Set_No_Predicate_On_Actual);
9410   pragma Inline (Set_No_Reordering);
9411   pragma Inline (Set_No_Return);
9412   pragma Inline (Set_No_Strict_Aliasing);
9413   pragma Inline (Set_No_Tagged_Streams_Pragma);
9414   pragma Inline (Set_Non_Binary_Modulus);
9415   pragma Inline (Set_Non_Limited_View);
9416   pragma Inline (Set_Nonzero_Is_True);
9417   pragma Inline (Set_Normalized_First_Bit);
9418   pragma Inline (Set_Normalized_Position);
9419   pragma Inline (Set_Normalized_Position_Max);
9420   pragma Inline (Set_OK_To_Rename);
9421   pragma Inline (Set_Optimize_Alignment_Space);
9422   pragma Inline (Set_Optimize_Alignment_Time);
9423   pragma Inline (Set_Original_Access_Type);
9424   pragma Inline (Set_Original_Array_Type);
9425   pragma Inline (Set_Original_Protected_Subprogram);
9426   pragma Inline (Set_Original_Record_Component);
9427   pragma Inline (Set_Overlays_Constant);
9428   pragma Inline (Set_Overridden_Operation);
9429   pragma Inline (Set_Package_Instantiation);
9430   pragma Inline (Set_Packed_Array_Impl_Type);
9431   pragma Inline (Set_Parent_Subtype);
9432   pragma Inline (Set_Part_Of_Constituents);
9433   pragma Inline (Set_Part_Of_References);
9434   pragma Inline (Set_Partial_View_Has_Unknown_Discr);
9435   pragma Inline (Set_Pending_Access_Types);
9436   pragma Inline (Set_Postconditions_Proc);
9437   pragma Inline (Set_Predicates_Ignored);
9438   pragma Inline (Set_Prival);
9439   pragma Inline (Set_Prival_Link);
9440   pragma Inline (Set_Private_Dependents);
9441   pragma Inline (Set_Private_View);
9442   pragma Inline (Set_Protected_Body_Subprogram);
9443   pragma Inline (Set_Protected_Formal);
9444   pragma Inline (Set_Protected_Subprogram);
9445   pragma Inline (Set_Protection_Object);
9446   pragma Inline (Set_Reachable);
9447   pragma Inline (Set_Receiving_Entry);
9448   pragma Inline (Set_Referenced);
9449   pragma Inline (Set_Referenced_As_LHS);
9450   pragma Inline (Set_Referenced_As_Out_Parameter);
9451   pragma Inline (Set_Refinement_Constituents);
9452   pragma Inline (Set_Register_Exception_Call);
9453   pragma Inline (Set_Related_Array_Object);
9454   pragma Inline (Set_Related_Expression);
9455   pragma Inline (Set_Related_Instance);
9456   pragma Inline (Set_Related_Type);
9457   pragma Inline (Set_Relative_Deadline_Variable);
9458   pragma Inline (Set_Renamed_Entity);
9459   pragma Inline (Set_Renamed_In_Spec);
9460   pragma Inline (Set_Renamed_Object);
9461   pragma Inline (Set_Renaming_Map);
9462   pragma Inline (Set_Requires_Overriding);
9463   pragma Inline (Set_Return_Applies_To);
9464   pragma Inline (Set_Return_Present);
9465   pragma Inline (Set_Returns_By_Ref);
9466   pragma Inline (Set_Reverse_Bit_Order);
9467   pragma Inline (Set_Reverse_Storage_Order);
9468   pragma Inline (Set_Rewritten_For_C);
9469   pragma Inline (Set_RM_Size);
9470   pragma Inline (Set_Scalar_Range);
9471   pragma Inline (Set_Scale_Value);
9472   pragma Inline (Set_Scope_Depth_Value);
9473   pragma Inline (Set_Sec_Stack_Needed_For_Return);
9474   pragma Inline (Set_Shadow_Entities);
9475   pragma Inline (Set_Shared_Var_Procs_Instance);
9476   pragma Inline (Set_Size_Check_Code);
9477   pragma Inline (Set_Size_Depends_On_Discriminant);
9478   pragma Inline (Set_Size_Known_At_Compile_Time);
9479   pragma Inline (Set_Small_Value);
9480   pragma Inline (Set_SPARK_Aux_Pragma);
9481   pragma Inline (Set_SPARK_Aux_Pragma_Inherited);
9482   pragma Inline (Set_SPARK_Pragma);
9483   pragma Inline (Set_SPARK_Pragma_Inherited);
9484   pragma Inline (Set_Spec_Entity);
9485   pragma Inline (Set_SSO_Set_High_By_Default);
9486   pragma Inline (Set_SSO_Set_Low_By_Default);
9487   pragma Inline (Set_Static_Discrete_Predicate);
9488   pragma Inline (Set_Static_Elaboration_Desired);
9489   pragma Inline (Set_Static_Initialization);
9490   pragma Inline (Set_Static_Real_Or_String_Predicate);
9491   pragma Inline (Set_Status_Flag_Or_Transient_Decl);
9492   pragma Inline (Set_Storage_Size_Variable);
9493   pragma Inline (Set_Stored_Constraint);
9494   pragma Inline (Set_Stores_Attribute_Old_Prefix);
9495   pragma Inline (Set_Strict_Alignment);
9496   pragma Inline (Set_String_Literal_Length);
9497   pragma Inline (Set_String_Literal_Low_Bound);
9498   pragma Inline (Set_Subprograms_For_Type);
9499   pragma Inline (Set_Subps_Index);
9500   pragma Inline (Set_Suppress_Elaboration_Warnings);
9501   pragma Inline (Set_Suppress_Initialization);
9502   pragma Inline (Set_Suppress_Style_Checks);
9503   pragma Inline (Set_Suppress_Value_Tracking_On_Call);
9504   pragma Inline (Set_Task_Body_Procedure);
9505   pragma Inline (Set_Thunk_Entity);
9506   pragma Inline (Set_Treat_As_Volatile);
9507   pragma Inline (Set_Underlying_Full_View);
9508   pragma Inline (Set_Underlying_Record_View);
9509   pragma Inline (Set_Universal_Aliasing);
9510   pragma Inline (Set_Unset_Reference);
9511   pragma Inline (Set_Used_As_Generic_Actual);
9512   pragma Inline (Set_Uses_Lock_Free);
9513   pragma Inline (Set_Uses_Sec_Stack);
9514   pragma Inline (Set_Validated_Object);
9515   pragma Inline (Set_Warnings_Off);
9516   pragma Inline (Set_Warnings_Off_Used);
9517   pragma Inline (Set_Warnings_Off_Used_Unmodified);
9518   pragma Inline (Set_Warnings_Off_Used_Unreferenced);
9519   pragma Inline (Set_Was_Hidden);
9520   pragma Inline (Set_Wrapped_Entity);
9521
9522   --  END XEINFO INLINES
9523
9524   --  The following Inline pragmas are *not* read by xeinfo when building the
9525   --  C version of this interface automatically (so the C version will end up
9526   --  making out of line calls). The pragma scan in xeinfo will be terminated
9527   --  on encountering the END XEINFO INLINES line. We inline things here which
9528   --  are small, but not of the canonical attribute access/set format that can
9529   --  be handled by xeinfo.
9530
9531   pragma Inline (Base_Type);
9532   pragma Inline (Is_Base_Type);
9533   pragma Inline (Is_Boolean_Type);
9534   pragma Inline (Is_Controlled);
9535   pragma Inline (Is_Entity_Name);
9536   pragma Inline (Is_Package_Or_Generic_Package);
9537   pragma Inline (Is_Packed_Array);
9538   pragma Inline (Is_String_Type);
9539   pragma Inline (Is_Subprogram_Or_Generic_Subprogram);
9540   pragma Inline (Is_Volatile);
9541   pragma Inline (Is_Wrapper_Package);
9542   pragma Inline (Known_RM_Size);
9543   pragma Inline (Known_Static_Component_Bit_Offset);
9544   pragma Inline (Known_Static_RM_Size);
9545   pragma Inline (Scope_Depth);
9546   pragma Inline (Scope_Depth_Set);
9547   pragma Inline (Unknown_RM_Size);
9548
9549end Einfo;
9550