1 /* Definitions for C++ parsing and type checking.
2 Copyright (C) 1987-2020 Free Software Foundation, Inc.
3 Contributed by Michael Tiemann (tiemann@cygnus.com)
4
5 This file is part of GCC.
6
7 GCC is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3, or (at your option)
10 any later version.
11
12 GCC is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING3. If not see
19 <http://www.gnu.org/licenses/>. */
20
21 #ifndef GCC_CP_TREE_H
22 #define GCC_CP_TREE_H
23
24 #include "tm.h"
25 #include "hard-reg-set.h"
26 #include "function.h"
27
28 /* In order for the format checking to accept the C++ front end
29 diagnostic framework extensions, you must include this file before
30 diagnostic-core.h, not after. We override the definition of GCC_DIAG_STYLE
31 in c-common.h. */
32 #undef GCC_DIAG_STYLE
33 #define GCC_DIAG_STYLE __gcc_cxxdiag__
34 #if defined(GCC_DIAGNOSTIC_CORE_H) || defined (GCC_C_COMMON_H)
35 #error \
36 In order for the format checking to accept the C++ front end diagnostic \
37 framework extensions, you must include this file before diagnostic-core.h and \
38 c-common.h, not after.
39 #endif
40 #include "c-family/c-common.h"
41 #include "diagnostic.h"
42
43 /* A tree node, together with a location, so that we can track locations
44 (and ranges) during parsing.
45
46 The location is redundant for node kinds that have locations,
47 but not all node kinds do (e.g. constants, and references to
48 params, locals, etc), so we stash a copy here. */
49
50 extern location_t cp_expr_location (const_tree);
51
52 class cp_expr
53 {
54 public:
cp_expr()55 cp_expr () :
56 m_value (NULL), m_loc (UNKNOWN_LOCATION) {}
57
cp_expr(tree value)58 cp_expr (tree value) :
59 m_value (value), m_loc (cp_expr_location (m_value)) {}
60
cp_expr(tree value,location_t loc)61 cp_expr (tree value, location_t loc):
62 m_value (value), m_loc (loc)
63 {
64 protected_set_expr_location (value, loc);
65 }
66
67 /* Implicit conversions to tree. */
tree()68 operator tree () const { return m_value; }
69 tree & operator* () { return m_value; }
70 tree operator* () const { return m_value; }
71 tree & operator-> () { return m_value; }
72 tree operator-> () const { return m_value; }
73
get_value()74 tree get_value () const { return m_value; }
get_location()75 location_t get_location () const { return m_loc; }
get_start()76 location_t get_start () const
77 {
78 source_range src_range = get_range_from_loc (line_table, m_loc);
79 return src_range.m_start;
80 }
get_finish()81 location_t get_finish () const
82 {
83 source_range src_range = get_range_from_loc (line_table, m_loc);
84 return src_range.m_finish;
85 }
86
set_location(location_t loc)87 void set_location (location_t loc)
88 {
89 protected_set_expr_location (m_value, loc);
90 m_loc = loc;
91 }
92
set_range(location_t start,location_t finish)93 void set_range (location_t start, location_t finish)
94 {
95 set_location (make_location (m_loc, start, finish));
96 }
97
maybe_add_location_wrapper()98 cp_expr& maybe_add_location_wrapper ()
99 {
100 m_value = maybe_wrap_with_location (m_value, m_loc);
101 return *this;
102 }
103
104 private:
105 tree m_value;
106 location_t m_loc;
107 };
108
109 inline bool
110 operator == (const cp_expr &lhs, tree rhs)
111 {
112 return lhs.get_value () == rhs;
113 }
114
115
116 enum cp_tree_index
117 {
118 CPTI_WCHAR_DECL,
119 CPTI_VTABLE_ENTRY_TYPE,
120 CPTI_DELTA_TYPE,
121 CPTI_VTABLE_INDEX_TYPE,
122 CPTI_CLEANUP_TYPE,
123 CPTI_VTT_PARM_TYPE,
124
125 CPTI_CLASS_TYPE,
126 CPTI_UNKNOWN_TYPE,
127 CPTI_INIT_LIST_TYPE,
128 CPTI_VTBL_TYPE,
129 CPTI_VTBL_PTR_TYPE,
130 CPTI_STD,
131 CPTI_ABI,
132 CPTI_GLOBAL,
133 CPTI_GLOBAL_TYPE,
134 CPTI_CONST_TYPE_INFO_TYPE,
135 CPTI_TYPE_INFO_PTR_TYPE,
136 CPTI_ABORT_FNDECL,
137 CPTI_AGGR_TAG,
138 CPTI_CONV_OP_MARKER,
139
140 CPTI_CTOR_IDENTIFIER,
141 CPTI_COMPLETE_CTOR_IDENTIFIER,
142 CPTI_BASE_CTOR_IDENTIFIER,
143 CPTI_DTOR_IDENTIFIER,
144 CPTI_COMPLETE_DTOR_IDENTIFIER,
145 CPTI_BASE_DTOR_IDENTIFIER,
146 CPTI_DELETING_DTOR_IDENTIFIER,
147 CPTI_CONV_OP_IDENTIFIER,
148 CPTI_DELTA_IDENTIFIER,
149 CPTI_IN_CHARGE_IDENTIFIER,
150 CPTI_VTT_PARM_IDENTIFIER,
151 CPTI_THIS_IDENTIFIER,
152 CPTI_PFN_IDENTIFIER,
153 CPTI_VPTR_IDENTIFIER,
154 CPTI_GLOBAL_IDENTIFIER,
155 CPTI_ANON_IDENTIFIER,
156 CPTI_AUTO_IDENTIFIER,
157 CPTI_DECLTYPE_AUTO_IDENTIFIER,
158 CPTI_INIT_LIST_IDENTIFIER,
159 CPTI_FOR_RANGE__IDENTIFIER,
160 CPTI_FOR_BEGIN__IDENTIFIER,
161 CPTI_FOR_END__IDENTIFIER,
162 CPTI_FOR_RANGE_IDENTIFIER,
163 CPTI_FOR_BEGIN_IDENTIFIER,
164 CPTI_FOR_END_IDENTIFIER,
165 CPTI_ABI_TAG_IDENTIFIER,
166 CPTI_ALIGNED_IDENTIFIER,
167 CPTI_BEGIN_IDENTIFIER,
168 CPTI_END_IDENTIFIER,
169 CPTI_GET_IDENTIFIER,
170 CPTI_GNU_IDENTIFIER,
171 CPTI_TUPLE_ELEMENT_IDENTIFIER,
172 CPTI_TUPLE_SIZE_IDENTIFIER,
173 CPTI_TYPE_IDENTIFIER,
174 CPTI_VALUE_IDENTIFIER,
175 CPTI_FUN_IDENTIFIER,
176 CPTI_CLOSURE_IDENTIFIER,
177 CPTI_HEAP_UNINIT_IDENTIFIER,
178 CPTI_HEAP_IDENTIFIER,
179 CPTI_HEAP_DELETED_IDENTIFIER,
180
181 CPTI_LANG_NAME_C,
182 CPTI_LANG_NAME_CPLUSPLUS,
183
184 CPTI_EMPTY_EXCEPT_SPEC,
185 CPTI_NOEXCEPT_TRUE_SPEC,
186 CPTI_NOEXCEPT_FALSE_SPEC,
187 CPTI_NOEXCEPT_DEFERRED_SPEC,
188
189 CPTI_TERMINATE_FN,
190 CPTI_CALL_UNEXPECTED_FN,
191 CPTI_GET_EXCEPTION_PTR_FN,
192 CPTI_BEGIN_CATCH_FN,
193 CPTI_END_CATCH_FN,
194 CPTI_ALLOCATE_EXCEPTION_FN,
195 CPTI_FREE_EXCEPTION_FN,
196 CPTI_THROW_FN,
197 CPTI_RETHROW_FN,
198 CPTI_ATEXIT_FN_PTR_TYPE,
199 CPTI_ATEXIT,
200 CPTI_DSO_HANDLE,
201 CPTI_DCAST,
202
203 CPTI_NULLPTR,
204 CPTI_NULLPTR_TYPE,
205
206 CPTI_ALIGN_TYPE,
207
208 CPTI_ANY_TARG,
209
210 CPTI_SOURCE_LOCATION_IMPL,
211
212 CPTI_FALLBACK_DFLOAT32_TYPE,
213 CPTI_FALLBACK_DFLOAT64_TYPE,
214 CPTI_FALLBACK_DFLOAT128_TYPE,
215
216 CPTI_MAX
217 };
218
219 extern GTY(()) tree cp_global_trees[CPTI_MAX];
220
221 #define wchar_decl_node cp_global_trees[CPTI_WCHAR_DECL]
222 #define vtable_entry_type cp_global_trees[CPTI_VTABLE_ENTRY_TYPE]
223 /* The type used to represent an offset by which to adjust the `this'
224 pointer in pointer-to-member types. */
225 #define delta_type_node cp_global_trees[CPTI_DELTA_TYPE]
226 /* The type used to represent an index into the vtable. */
227 #define vtable_index_type cp_global_trees[CPTI_VTABLE_INDEX_TYPE]
228
229 #define class_type_node cp_global_trees[CPTI_CLASS_TYPE]
230 #define unknown_type_node cp_global_trees[CPTI_UNKNOWN_TYPE]
231 #define init_list_type_node cp_global_trees[CPTI_INIT_LIST_TYPE]
232 #define vtbl_type_node cp_global_trees[CPTI_VTBL_TYPE]
233 #define vtbl_ptr_type_node cp_global_trees[CPTI_VTBL_PTR_TYPE]
234 #define std_node cp_global_trees[CPTI_STD]
235 #define abi_node cp_global_trees[CPTI_ABI]
236 #define global_namespace cp_global_trees[CPTI_GLOBAL]
237 #define global_type_node cp_global_trees[CPTI_GLOBAL_TYPE]
238 #define const_type_info_type_node cp_global_trees[CPTI_CONST_TYPE_INFO_TYPE]
239 #define type_info_ptr_type cp_global_trees[CPTI_TYPE_INFO_PTR_TYPE]
240 #define conv_op_marker cp_global_trees[CPTI_CONV_OP_MARKER]
241 #define abort_fndecl cp_global_trees[CPTI_ABORT_FNDECL]
242 #define current_aggr cp_global_trees[CPTI_AGGR_TAG]
243 #define nullptr_node cp_global_trees[CPTI_NULLPTR]
244 #define nullptr_type_node cp_global_trees[CPTI_NULLPTR_TYPE]
245 /* std::align_val_t */
246 #define align_type_node cp_global_trees[CPTI_ALIGN_TYPE]
247
248 /* We cache these tree nodes so as to call get_identifier less frequently.
249 For identifiers for functions, including special member functions such
250 as ctors and assignment operators, the nodes can be used (among other
251 things) to iterate over their overloads defined by/for a type. For
252 example:
253
254 tree ovlid = assign_op_identifier;
255 tree overloads = get_class_binding (type, ovlid);
256 for (ovl_iterator it (overloads); it; ++it) { ... }
257
258 iterates over the set of implicitly and explicitly defined overloads
259 of the assignment operator for type (including the copy and move
260 assignment operators, whether deleted or not). */
261
262 /* The name of a constructor that takes an in-charge parameter to
263 decide whether or not to construct virtual base classes. */
264 #define ctor_identifier cp_global_trees[CPTI_CTOR_IDENTIFIER]
265 /* The name of a constructor that constructs virtual base classes. */
266 #define complete_ctor_identifier cp_global_trees[CPTI_COMPLETE_CTOR_IDENTIFIER]
267 /* The name of a constructor that does not construct virtual base classes. */
268 #define base_ctor_identifier cp_global_trees[CPTI_BASE_CTOR_IDENTIFIER]
269 /* The name of a destructor that takes an in-charge parameter to
270 decide whether or not to destroy virtual base classes and whether
271 or not to delete the object. */
272 #define dtor_identifier cp_global_trees[CPTI_DTOR_IDENTIFIER]
273 /* The name of a destructor that destroys virtual base classes. */
274 #define complete_dtor_identifier cp_global_trees[CPTI_COMPLETE_DTOR_IDENTIFIER]
275 /* The name of a destructor that does not destroy virtual base
276 classes. */
277 #define base_dtor_identifier cp_global_trees[CPTI_BASE_DTOR_IDENTIFIER]
278 /* The name of a destructor that destroys virtual base classes, and
279 then deletes the entire object. */
280 #define deleting_dtor_identifier cp_global_trees[CPTI_DELETING_DTOR_IDENTIFIER]
281
282 /* The name used for conversion operators -- but note that actual
283 conversion functions use special identifiers outside the identifier
284 table. */
285 #define conv_op_identifier cp_global_trees[CPTI_CONV_OP_IDENTIFIER]
286
287 #define delta_identifier cp_global_trees[CPTI_DELTA_IDENTIFIER]
288 #define in_charge_identifier cp_global_trees[CPTI_IN_CHARGE_IDENTIFIER]
289 /* The name of the parameter that contains a pointer to the VTT to use
290 for this subobject constructor or destructor. */
291 #define vtt_parm_identifier cp_global_trees[CPTI_VTT_PARM_IDENTIFIER]
292 #define this_identifier cp_global_trees[CPTI_THIS_IDENTIFIER]
293 #define pfn_identifier cp_global_trees[CPTI_PFN_IDENTIFIER]
294 #define vptr_identifier cp_global_trees[CPTI_VPTR_IDENTIFIER]
295 /* The name of the ::, std & anon namespaces. */
296 #define global_identifier cp_global_trees[CPTI_GLOBAL_IDENTIFIER]
297 #define anon_identifier cp_global_trees[CPTI_ANON_IDENTIFIER]
298 /* auto and declspec(auto) identifiers. */
299 #define auto_identifier cp_global_trees[CPTI_AUTO_IDENTIFIER]
300 #define decltype_auto_identifier cp_global_trees[CPTI_DECLTYPE_AUTO_IDENTIFIER]
301 #define init_list_identifier cp_global_trees[CPTI_INIT_LIST_IDENTIFIER]
302 #define for_range__identifier cp_global_trees[CPTI_FOR_RANGE__IDENTIFIER]
303 #define for_begin__identifier cp_global_trees[CPTI_FOR_BEGIN__IDENTIFIER]
304 #define for_end__identifier cp_global_trees[CPTI_FOR_END__IDENTIFIER]
305 #define for_range_identifier cp_global_trees[CPTI_FOR_RANGE_IDENTIFIER]
306 #define for_begin_identifier cp_global_trees[CPTI_FOR_BEGIN_IDENTIFIER]
307 #define for_end_identifier cp_global_trees[CPTI_FOR_END_IDENTIFIER]
308 #define abi_tag_identifier cp_global_trees[CPTI_ABI_TAG_IDENTIFIER]
309 #define aligned_identifier cp_global_trees[CPTI_ALIGNED_IDENTIFIER]
310 #define begin_identifier cp_global_trees[CPTI_BEGIN_IDENTIFIER]
311 #define end_identifier cp_global_trees[CPTI_END_IDENTIFIER]
312 #define get__identifier cp_global_trees[CPTI_GET_IDENTIFIER]
313 #define gnu_identifier cp_global_trees[CPTI_GNU_IDENTIFIER]
314 #define tuple_element_identifier cp_global_trees[CPTI_TUPLE_ELEMENT_IDENTIFIER]
315 #define tuple_size_identifier cp_global_trees[CPTI_TUPLE_SIZE_IDENTIFIER]
316 #define type_identifier cp_global_trees[CPTI_TYPE_IDENTIFIER]
317 #define value_identifier cp_global_trees[CPTI_VALUE_IDENTIFIER]
318 #define fun_identifier cp_global_trees[CPTI_FUN_IDENTIFIER]
319 #define closure_identifier cp_global_trees[CPTI_CLOSURE_IDENTIFIER]
320 #define heap_uninit_identifier cp_global_trees[CPTI_HEAP_UNINIT_IDENTIFIER]
321 #define heap_identifier cp_global_trees[CPTI_HEAP_IDENTIFIER]
322 #define heap_deleted_identifier cp_global_trees[CPTI_HEAP_DELETED_IDENTIFIER]
323 #define lang_name_c cp_global_trees[CPTI_LANG_NAME_C]
324 #define lang_name_cplusplus cp_global_trees[CPTI_LANG_NAME_CPLUSPLUS]
325
326 /* Exception specifiers used for throw(), noexcept(true),
327 noexcept(false) and deferred noexcept. We rely on these being
328 uncloned. */
329 #define empty_except_spec cp_global_trees[CPTI_EMPTY_EXCEPT_SPEC]
330 #define noexcept_true_spec cp_global_trees[CPTI_NOEXCEPT_TRUE_SPEC]
331 #define noexcept_false_spec cp_global_trees[CPTI_NOEXCEPT_FALSE_SPEC]
332 #define noexcept_deferred_spec cp_global_trees[CPTI_NOEXCEPT_DEFERRED_SPEC]
333
334 /* Exception handling function declarations. */
335 #define terminate_fn cp_global_trees[CPTI_TERMINATE_FN]
336 #define call_unexpected_fn cp_global_trees[CPTI_CALL_UNEXPECTED_FN]
337 #define get_exception_ptr_fn cp_global_trees[CPTI_GET_EXCEPTION_PTR_FN]
338 #define begin_catch_fn cp_global_trees[CPTI_BEGIN_CATCH_FN]
339 #define end_catch_fn cp_global_trees[CPTI_END_CATCH_FN]
340 #define allocate_exception_fn cp_global_trees[CPTI_ALLOCATE_EXCEPTION_FN]
341 #define free_exception_fn cp_global_trees[CPTI_FREE_EXCEPTION_FN]
342 #define throw_fn cp_global_trees[CPTI_THROW_FN]
343 #define rethrow_fn cp_global_trees[CPTI_RETHROW_FN]
344
345 /* The type of the function-pointer argument to "__cxa_atexit" (or
346 "std::atexit", if "__cxa_atexit" is not being used). */
347 #define atexit_fn_ptr_type_node cp_global_trees[CPTI_ATEXIT_FN_PTR_TYPE]
348
349 /* A pointer to `std::atexit'. */
350 #define atexit_node cp_global_trees[CPTI_ATEXIT]
351
352 /* A pointer to `__dso_handle'. */
353 #define dso_handle_node cp_global_trees[CPTI_DSO_HANDLE]
354
355 /* The declaration of the dynamic_cast runtime. */
356 #define dynamic_cast_node cp_global_trees[CPTI_DCAST]
357
358 /* The type of a destructor. */
359 #define cleanup_type cp_global_trees[CPTI_CLEANUP_TYPE]
360
361 /* The type of the vtt parameter passed to subobject constructors and
362 destructors. */
363 #define vtt_parm_type cp_global_trees[CPTI_VTT_PARM_TYPE]
364
365 /* A node which matches any template argument. */
366 #define any_targ_node cp_global_trees[CPTI_ANY_TARG]
367
368 /* std::source_location::__impl class. */
369 #define source_location_impl cp_global_trees[CPTI_SOURCE_LOCATION_IMPL]
370
371 /* Node to indicate default access. This must be distinct from the
372 access nodes in tree.h. */
373
374 #define access_default_node null_node
375
376 /* Variant of dfloat{32,64,128}_type_node only used for fundamental
377 rtti purposes if DFP is disabled. */
378 #define fallback_dfloat32_type cp_global_trees[CPTI_FALLBACK_DFLOAT32_TYPE]
379 #define fallback_dfloat64_type cp_global_trees[CPTI_FALLBACK_DFLOAT64_TYPE]
380 #define fallback_dfloat128_type cp_global_trees[CPTI_FALLBACK_DFLOAT128_TYPE]
381
382
383 #include "name-lookup.h"
384
385 /* Usage of TREE_LANG_FLAG_?:
386 0: IDENTIFIER_KIND_BIT_0 (in IDENTIFIER_NODE)
387 NEW_EXPR_USE_GLOBAL (in NEW_EXPR).
388 COND_EXPR_IS_VEC_DELETE (in COND_EXPR).
389 DELETE_EXPR_USE_GLOBAL (in DELETE_EXPR).
390 COMPOUND_EXPR_OVERLOADED (in COMPOUND_EXPR).
391 CLEANUP_P (in TRY_BLOCK)
392 AGGR_INIT_VIA_CTOR_P (in AGGR_INIT_EXPR)
393 PTRMEM_OK_P (in ADDR_EXPR, OFFSET_REF, SCOPE_REF)
394 PAREN_STRING_LITERAL (in STRING_CST)
395 CP_DECL_THREAD_LOCAL_P (in VAR_DECL)
396 KOENIG_LOOKUP_P (in CALL_EXPR)
397 STATEMENT_LIST_NO_SCOPE (in STATEMENT_LIST).
398 EXPR_STMT_STMT_EXPR_RESULT (in EXPR_STMT)
399 STMT_EXPR_NO_SCOPE (in STMT_EXPR)
400 BIND_EXPR_TRY_BLOCK (in BIND_EXPR)
401 TYPENAME_IS_ENUM_P (in TYPENAME_TYPE)
402 OMP_FOR_GIMPLIFYING_P (in OMP_FOR, OMP_SIMD, OMP_DISTRIBUTE,
403 and OMP_TASKLOOP)
404 BASELINK_QUALIFIED_P (in BASELINK)
405 TARGET_EXPR_IMPLICIT_P (in TARGET_EXPR)
406 TEMPLATE_PARM_PARAMETER_PACK (in TEMPLATE_PARM_INDEX)
407 ATTR_IS_DEPENDENT (in the TREE_LIST for an attribute)
408 ABI_TAG_IMPLICIT (in the TREE_LIST for the argument of abi_tag)
409 LAMBDA_CAPTURE_EXPLICIT_P (in a TREE_LIST in LAMBDA_EXPR_CAPTURE_LIST)
410 CONSTRUCTOR_IS_DIRECT_INIT (in CONSTRUCTOR)
411 LAMBDA_EXPR_CAPTURES_THIS_P (in LAMBDA_EXPR)
412 DECLTYPE_FOR_LAMBDA_CAPTURE (in DECLTYPE_TYPE)
413 VEC_INIT_EXPR_IS_CONSTEXPR (in VEC_INIT_EXPR)
414 DECL_OVERRIDE_P (in FUNCTION_DECL)
415 IMPLICIT_CONV_EXPR_DIRECT_INIT (in IMPLICIT_CONV_EXPR)
416 TRANSACTION_EXPR_IS_STMT (in TRANSACTION_EXPR)
417 CONVERT_EXPR_VBASE_PATH (in CONVERT_EXPR)
418 PACK_EXPANSION_LOCAL_P (in *_PACK_EXPANSION)
419 TINFO_HAS_ACCESS_ERRORS (in TEMPLATE_INFO)
420 SIZEOF_EXPR_TYPE_P (in SIZEOF_EXPR)
421 COMPOUND_REQ_NOEXCEPT_P (in COMPOUND_REQ)
422 WILDCARD_PACK_P (in WILDCARD_DECL)
423 BLOCK_OUTER_CURLY_BRACE_P (in BLOCK)
424 FOLD_EXPR_MODOP_P (*_FOLD_EXPR)
425 IF_STMT_CONSTEXPR_P (IF_STMT)
426 TEMPLATE_TYPE_PARM_FOR_CLASS (TEMPLATE_TYPE_PARM)
427 DECL_NAMESPACE_INLINE_P (in NAMESPACE_DECL)
428 SWITCH_STMT_ALL_CASES_P (in SWITCH_STMT)
429 REINTERPRET_CAST_P (in NOP_EXPR)
430 ALIGNOF_EXPR_STD_P (in ALIGNOF_EXPR)
431 OVL_DEDUP_P (in OVERLOAD)
432 1: IDENTIFIER_KIND_BIT_1 (in IDENTIFIER_NODE)
433 TI_PENDING_TEMPLATE_FLAG.
434 TEMPLATE_PARMS_FOR_INLINE.
435 DELETE_EXPR_USE_VEC (in DELETE_EXPR).
436 (TREE_CALLS_NEW) (in _EXPR or _REF) (commented-out).
437 ICS_ELLIPSIS_FLAG (in _CONV)
438 DECL_INITIALIZED_P (in VAR_DECL)
439 TYPENAME_IS_CLASS_P (in TYPENAME_TYPE)
440 STMT_IS_FULL_EXPR_P (in _STMT)
441 TARGET_EXPR_LIST_INIT_P (in TARGET_EXPR)
442 LAMBDA_EXPR_MUTABLE_P (in LAMBDA_EXPR)
443 DECL_FINAL_P (in FUNCTION_DECL)
444 QUALIFIED_NAME_IS_TEMPLATE (in SCOPE_REF)
445 CONSTRUCTOR_IS_DEPENDENT (in CONSTRUCTOR)
446 TINFO_USED_TEMPLATE_ID (in TEMPLATE_INFO)
447 PACK_EXPANSION_SIZEOF_P (in *_PACK_EXPANSION)
448 OVL_USING_P (in OVERLOAD)
449 IMPLICIT_CONV_EXPR_NONTYPE_ARG (in IMPLICIT_CONV_EXPR)
450 2: IDENTIFIER_KIND_BIT_2 (in IDENTIFIER_NODE)
451 ICS_THIS_FLAG (in _CONV)
452 DECL_INITIALIZED_BY_CONSTANT_EXPRESSION_P (in VAR_DECL)
453 STATEMENT_LIST_TRY_BLOCK (in STATEMENT_LIST)
454 TYPENAME_IS_RESOLVING_P (in TYPE_NAME_TYPE)
455 TARGET_EXPR_DIRECT_INIT_P (in TARGET_EXPR)
456 FNDECL_USED_AUTO (in FUNCTION_DECL)
457 DECLTYPE_FOR_LAMBDA_PROXY (in DECLTYPE_TYPE)
458 REF_PARENTHESIZED_P (in COMPONENT_REF, INDIRECT_REF, SCOPE_REF, VIEW_CONVERT_EXPR)
459 AGGR_INIT_ZERO_FIRST (in AGGR_INIT_EXPR)
460 CONSTRUCTOR_MUTABLE_POISON (in CONSTRUCTOR)
461 OVL_HIDDEN_P (in OVERLOAD)
462 SWITCH_STMT_NO_BREAK_P (in SWITCH_STMT)
463 LAMBDA_EXPR_CAPTURE_OPTIMIZED (in LAMBDA_EXPR)
464 IMPLICIT_CONV_EXPR_BRACED_INIT (in IMPLICIT_CONV_EXPR)
465 TINFO_VAR_DECLARED_CONSTINIT (in TEMPLATE_INFO)
466 CALL_FROM_NEW_OR_DELETE_P (in CALL_EXPR)
467 PACK_EXPANSION_AUTO_P (in *_PACK_EXPANSION)
468 3: (TREE_REFERENCE_EXPR) (in NON_LVALUE_EXPR) (commented-out).
469 ICS_BAD_FLAG (in _CONV)
470 FN_TRY_BLOCK_P (in TRY_BLOCK)
471 BIND_EXPR_BODY_BLOCK (in BIND_EXPR)
472 CALL_EXPR_ORDERED_ARGS (in CALL_EXPR, AGGR_INIT_EXPR)
473 DECLTYPE_FOR_REF_CAPTURE (in DECLTYPE_TYPE)
474 CONSTRUCTOR_C99_COMPOUND_LITERAL (in CONSTRUCTOR)
475 OVL_NESTED_P (in OVERLOAD)
476 LAMBDA_EXPR_INSTANTIATED (in LAMBDA_EXPR)
477 Reserved for DECL_MODULE_EXPORT (in DECL_)
478 4: IDENTIFIER_MARKED (IDENTIFIER_NODEs)
479 TREE_HAS_CONSTRUCTOR (in INDIRECT_REF, SAVE_EXPR, CONSTRUCTOR,
480 CALL_EXPR, or FIELD_DECL).
481 DECL_TINFO_P (in VAR_DECL)
482 FUNCTION_REF_QUALIFIED (in FUNCTION_TYPE, METHOD_TYPE)
483 OVL_LOOKUP_P (in OVERLOAD)
484 LOOKUP_FOUND_P (in RECORD_TYPE, UNION_TYPE, NAMESPACE_DECL)
485 5: IDENTIFIER_VIRTUAL_P (in IDENTIFIER_NODE)
486 FUNCTION_RVALUE_QUALIFIED (in FUNCTION_TYPE, METHOD_TYPE)
487 CALL_EXPR_REVERSE_ARGS (in CALL_EXPR, AGGR_INIT_EXPR)
488 CONSTRUCTOR_PLACEHOLDER_BOUNDARY (in CONSTRUCTOR)
489 6: TYPE_MARKED_P (in _TYPE)
490 DECL_NON_TRIVIALLY_INITIALIZED_P (in VAR_DECL)
491 RANGE_FOR_IVDEP (in RANGE_FOR_STMT)
492 CALL_EXPR_OPERATOR_SYNTAX (in CALL_EXPR, AGGR_INIT_EXPR)
493 CONSTRUCTOR_IS_DESIGNATED_INIT (in CONSTRUCTOR)
494
495 Usage of TYPE_LANG_FLAG_?:
496 0: TYPE_DEPENDENT_P
497 1: TYPE_HAS_USER_CONSTRUCTOR.
498 2: TYPE_HAS_LATE_RETURN_TYPE (in FUNCTION_TYPE, METHOD_TYPE)
499 TYPE_PTRMEMFUNC_FLAG (in RECORD_TYPE)
500 4: TYPE_HAS_NONTRIVIAL_DESTRUCTOR
501 5: CLASS_TYPE_P (in RECORD_TYPE and UNION_TYPE)
502 ENUM_FIXED_UNDERLYING_TYPE_P (in ENUMERAL_TYPE)
503 AUTO_IS_DECLTYPE (in TEMPLATE_TYPE_PARM)
504 6: TYPE_DEPENDENT_P_VALID
505
506 Usage of DECL_LANG_FLAG_?:
507 0: DECL_TEMPLATE_PARM_P (in PARM_DECL, CONST_DECL, TYPE_DECL, or TEMPLATE_DECL)
508 DECL_LOCAL_FUNCTION_P (in FUNCTION_DECL)
509 DECL_MUTABLE_P (in FIELD_DECL)
510 DECL_DEPENDENT_P (in USING_DECL)
511 LABEL_DECL_BREAK (in LABEL_DECL)
512 1: C_TYPEDEF_EXPLICITLY_SIGNED (in TYPE_DECL).
513 DECL_TEMPLATE_INSTANTIATED (in a VAR_DECL or a FUNCTION_DECL)
514 DECL_MEMBER_TEMPLATE_P (in TEMPLATE_DECL)
515 USING_DECL_TYPENAME_P (in USING_DECL)
516 DECL_VLA_CAPTURE_P (in FIELD_DECL)
517 DECL_ARRAY_PARAMETER_P (in PARM_DECL)
518 LABEL_DECL_CONTINUE (in LABEL_DECL)
519 2: DECL_THIS_EXTERN (in VAR_DECL or FUNCTION_DECL).
520 DECL_IMPLICIT_TYPEDEF_P (in a TYPE_DECL)
521 DECL_CONSTRAINT_VAR_P (in a PARM_DECL)
522 TEMPLATE_DECL_COMPLEX_ALIAS_P (in TEMPLATE_DECL)
523 DECL_INSTANTIATING_NSDMI_P (in a FIELD_DECL)
524 LABEL_DECL_CDTOR (in LABEL_DECL)
525 3: DECL_IN_AGGR_P.
526 4: DECL_C_BIT_FIELD (in a FIELD_DECL)
527 DECL_ANON_UNION_VAR_P (in a VAR_DECL)
528 DECL_SELF_REFERENCE_P (in a TYPE_DECL)
529 DECL_INVALID_OVERRIDER_P (in a FUNCTION_DECL)
530 5: DECL_INTERFACE_KNOWN.
531 6: DECL_THIS_STATIC (in VAR_DECL or FUNCTION_DECL).
532 DECL_FIELD_IS_BASE (in FIELD_DECL)
533 TYPE_DECL_ALIAS_P (in TYPE_DECL)
534 7: DECL_THUNK_P (in a member FUNCTION_DECL)
535 DECL_NORMAL_CAPTURE_P (in FIELD_DECL)
536 8: DECL_DECLARED_CONSTEXPR_P (in VAR_DECL, FUNCTION_DECL)
537
538 Usage of language-independent fields in a language-dependent manner:
539
540 TYPE_ALIAS_SET
541 This field is used by TYPENAME_TYPEs, TEMPLATE_TYPE_PARMs, and so
542 forth as a substitute for the mark bits provided in `lang_type'.
543 At present, only the six low-order bits are used.
544
545 TYPE_LANG_SLOT_1
546 For a FUNCTION_TYPE or METHOD_TYPE, this is TYPE_RAISES_EXCEPTIONS.
547 For a POINTER_TYPE (to a METHOD_TYPE), this is TYPE_PTRMEMFUNC_TYPE.
548 For an ENUMERAL_TYPE, BOUND_TEMPLATE_TEMPLATE_PARM_TYPE,
549 RECORD_TYPE or UNION_TYPE this is TYPE_TEMPLATE_INFO,
550
551 BINFO_VIRTUALS
552 For a binfo, this is a TREE_LIST. There is an entry for each
553 virtual function declared either in BINFO or its direct and
554 indirect primary bases.
555
556 The BV_DELTA of each node gives the amount by which to adjust the
557 `this' pointer when calling the function. If the method is an
558 overridden version of a base class method, then it is assumed
559 that, prior to adjustment, the this pointer points to an object
560 of the base class.
561
562 The BV_VCALL_INDEX of each node, if non-NULL, gives the vtable
563 index of the vcall offset for this entry.
564
565 The BV_FN is the declaration for the virtual function itself.
566
567 If BV_LOST_PRIMARY is set, it means that this entry is for a lost
568 primary virtual base and can be left null in the vtable.
569
570 BINFO_VTABLE
571 This is an expression with POINTER_TYPE that gives the value
572 to which the vptr should be initialized. Use get_vtbl_decl_for_binfo
573 to extract the VAR_DECL for the complete vtable.
574
575 DECL_VINDEX
576 This field is NULL for a non-virtual function. For a virtual
577 function, it is eventually set to an INTEGER_CST indicating the
578 index in the vtable at which this function can be found. When
579 a virtual function is declared, but before it is known what
580 function is overridden, this field is the error_mark_node.
581
582 Temporarily, it may be set to a TREE_LIST whose TREE_VALUE is
583 the virtual function this one overrides, and whose TREE_CHAIN is
584 the old DECL_VINDEX. */
585
586 /* Language-specific tree checkers. */
587
588 #define VAR_OR_FUNCTION_DECL_CHECK(NODE) \
589 TREE_CHECK2(NODE,VAR_DECL,FUNCTION_DECL)
590
591 #define TYPE_FUNCTION_OR_TEMPLATE_DECL_CHECK(NODE) \
592 TREE_CHECK3(NODE,TYPE_DECL,TEMPLATE_DECL,FUNCTION_DECL)
593
594 #define TYPE_FUNCTION_OR_TEMPLATE_DECL_P(NODE) \
595 (TREE_CODE (NODE) == TYPE_DECL || TREE_CODE (NODE) == TEMPLATE_DECL \
596 || TREE_CODE (NODE) == FUNCTION_DECL)
597
598 #define VAR_FUNCTION_OR_PARM_DECL_CHECK(NODE) \
599 TREE_CHECK3(NODE,VAR_DECL,FUNCTION_DECL,PARM_DECL)
600
601 #define VAR_TEMPL_TYPE_OR_FUNCTION_DECL_CHECK(NODE) \
602 TREE_CHECK4(NODE,VAR_DECL,FUNCTION_DECL,TYPE_DECL,TEMPLATE_DECL)
603
604 #define VAR_TEMPL_TYPE_FIELD_OR_FUNCTION_DECL_CHECK(NODE) \
605 TREE_CHECK5(NODE,VAR_DECL,FIELD_DECL,FUNCTION_DECL,TYPE_DECL,TEMPLATE_DECL)
606
607 #define BOUND_TEMPLATE_TEMPLATE_PARM_TYPE_CHECK(NODE) \
608 TREE_CHECK(NODE,BOUND_TEMPLATE_TEMPLATE_PARM)
609
610 #if defined ENABLE_TREE_CHECKING && (GCC_VERSION >= 2007)
611
612 /* Returns t iff the node can have a TEMPLATE_INFO field. */
613
614 inline tree
template_info_decl_check(const_tree t,const char * f,int l,const char * fn)615 template_info_decl_check (const_tree t, const char* f, int l, const char* fn)
616 {
617 switch (TREE_CODE (t))
618 {
619 case VAR_DECL:
620 case FUNCTION_DECL:
621 case FIELD_DECL:
622 case TYPE_DECL:
623 case CONCEPT_DECL:
624 case TEMPLATE_DECL:
625 return const_cast<tree>(t);
626 default:
627 break;
628 }
629 tree_check_failed (t, f, l, fn,
630 VAR_DECL, FUNCTION_DECL, FIELD_DECL, TYPE_DECL,
631 CONCEPT_DECL, TEMPLATE_DECL, 0);
632 gcc_unreachable ();
633 }
634
635 #define TEMPLATE_INFO_DECL_CHECK(NODE) \
636 template_info_decl_check ((NODE), __FILE__, __LINE__, __FUNCTION__)
637
638 #define THUNK_FUNCTION_CHECK(NODE) __extension__ \
639 ({ __typeof (NODE) const __t = (NODE); \
640 if (TREE_CODE (__t) != FUNCTION_DECL || !__t->decl_common.lang_specific \
641 || !__t->decl_common.lang_specific->u.fn.thunk_p) \
642 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, 0); \
643 __t; })
644
645 #else /* ENABLE_TREE_CHECKING */
646
647 #define TEMPLATE_INFO_DECL_CHECK(NODE) (NODE)
648 #define THUNK_FUNCTION_CHECK(NODE) (NODE)
649
650 #endif /* ENABLE_TREE_CHECKING */
651
652 /* Language-dependent contents of an identifier. */
653
654 struct GTY(()) lang_identifier {
655 struct c_common_identifier c_common;
656 cxx_binding *bindings;
657 };
658
659 /* Return a typed pointer version of T if it designates a
660 C++ front-end identifier. */
661 inline lang_identifier*
identifier_p(tree t)662 identifier_p (tree t)
663 {
664 if (TREE_CODE (t) == IDENTIFIER_NODE)
665 return (lang_identifier*) t;
666 return NULL;
667 }
668
669 #define LANG_IDENTIFIER_CAST(NODE) \
670 ((struct lang_identifier*)IDENTIFIER_NODE_CHECK (NODE))
671
672 struct GTY(()) template_parm_index {
673 struct tree_common common;
674 int index;
675 int level;
676 int orig_level;
677 tree decl;
678 };
679
680 struct GTY(()) ptrmem_cst {
681 struct tree_common common;
682 tree member;
683 };
684 typedef struct ptrmem_cst * ptrmem_cst_t;
685
686 #define CLEANUP_P(NODE) TREE_LANG_FLAG_0 (TRY_BLOCK_CHECK (NODE))
687
688 #define BIND_EXPR_TRY_BLOCK(NODE) \
689 TREE_LANG_FLAG_0 (BIND_EXPR_CHECK (NODE))
690
691 /* Used to mark the block around the member initializers and cleanups. */
692 #define BIND_EXPR_BODY_BLOCK(NODE) \
693 TREE_LANG_FLAG_3 (BIND_EXPR_CHECK (NODE))
694 #define FUNCTION_NEEDS_BODY_BLOCK(NODE) \
695 (DECL_CONSTRUCTOR_P (NODE) || DECL_DESTRUCTOR_P (NODE) \
696 || LAMBDA_FUNCTION_P (NODE))
697
698 #define STATEMENT_LIST_NO_SCOPE(NODE) \
699 TREE_LANG_FLAG_0 (STATEMENT_LIST_CHECK (NODE))
700 #define STATEMENT_LIST_TRY_BLOCK(NODE) \
701 TREE_LANG_FLAG_2 (STATEMENT_LIST_CHECK (NODE))
702
703 /* Mark the outer curly brace BLOCK. */
704 #define BLOCK_OUTER_CURLY_BRACE_P(NODE) TREE_LANG_FLAG_0 (BLOCK_CHECK (NODE))
705
706 /* Nonzero if this statement should be considered a full-expression,
707 i.e., if temporaries created during this statement should have
708 their destructors run at the end of this statement. */
709 #define STMT_IS_FULL_EXPR_P(NODE) TREE_LANG_FLAG_1 ((NODE))
710
711 /* Marks the result of a statement expression. */
712 #define EXPR_STMT_STMT_EXPR_RESULT(NODE) \
713 TREE_LANG_FLAG_0 (EXPR_STMT_CHECK (NODE))
714
715 /* Nonzero if this statement-expression does not have an associated scope. */
716 #define STMT_EXPR_NO_SCOPE(NODE) \
717 TREE_LANG_FLAG_0 (STMT_EXPR_CHECK (NODE))
718
719 #define COND_EXPR_IS_VEC_DELETE(NODE) \
720 TREE_LANG_FLAG_0 (COND_EXPR_CHECK (NODE))
721
722 /* Nonzero if this NOP_EXPR is a reinterpret_cast. Such conversions
723 are not constexprs. Other NOP_EXPRs are. */
724 #define REINTERPRET_CAST_P(NODE) \
725 TREE_LANG_FLAG_0 (NOP_EXPR_CHECK (NODE))
726
727 /* Returns nonzero iff TYPE1 and TYPE2 are the same type, in the usual
728 sense of `same'. */
729 #define same_type_p(TYPE1, TYPE2) \
730 comptypes ((TYPE1), (TYPE2), COMPARE_STRICT)
731
732 /* Returns nonzero iff NODE is a declaration for the global function
733 `main'. */
734 #define DECL_MAIN_P(NODE) \
735 (DECL_EXTERN_C_FUNCTION_P (NODE) \
736 && DECL_NAME (NODE) != NULL_TREE \
737 && MAIN_NAME_P (DECL_NAME (NODE)) \
738 && flag_hosted)
739
740 /* Lookup walker marking. */
741 #define LOOKUP_SEEN_P(NODE) TREE_VISITED(NODE)
742 #define LOOKUP_FOUND_P(NODE) \
743 TREE_LANG_FLAG_4 (TREE_CHECK3(NODE,RECORD_TYPE,UNION_TYPE,NAMESPACE_DECL))
744
745 /* These two accessors should only be used by OVL manipulators.
746 Other users should use iterators and convenience functions. */
747 #define OVL_FUNCTION(NODE) \
748 (((struct tree_overload*)OVERLOAD_CHECK (NODE))->function)
749 #define OVL_CHAIN(NODE) \
750 (((struct tree_overload*)OVERLOAD_CHECK (NODE))->common.chain)
751
752 /* If set, this or a subsequent overload contains decls that need deduping. */
753 #define OVL_DEDUP_P(NODE) TREE_LANG_FLAG_0 (OVERLOAD_CHECK (NODE))
754 /* If set, this was imported in a using declaration. */
755 #define OVL_USING_P(NODE) TREE_LANG_FLAG_1 (OVERLOAD_CHECK (NODE))
756 /* If set, this overload is a hidden decl. */
757 #define OVL_HIDDEN_P(NODE) TREE_LANG_FLAG_2 (OVERLOAD_CHECK (NODE))
758 /* If set, this overload contains a nested overload. */
759 #define OVL_NESTED_P(NODE) TREE_LANG_FLAG_3 (OVERLOAD_CHECK (NODE))
760 /* If set, this overload was constructed during lookup. */
761 #define OVL_LOOKUP_P(NODE) TREE_LANG_FLAG_4 (OVERLOAD_CHECK (NODE))
762
763 /* The first decl of an overload. */
764 #define OVL_FIRST(NODE) ovl_first (NODE)
765 /* The name of the overload set. */
766 #define OVL_NAME(NODE) DECL_NAME (OVL_FIRST (NODE))
767
768 /* Whether this is a set of overloaded functions. TEMPLATE_DECLS are
769 always wrapped in an OVERLOAD, so we don't need to check them
770 here. */
771 #define OVL_P(NODE) \
772 (TREE_CODE (NODE) == FUNCTION_DECL || TREE_CODE (NODE) == OVERLOAD)
773 /* Whether this is a single member overload. */
774 #define OVL_SINGLE_P(NODE) \
775 (TREE_CODE (NODE) != OVERLOAD || !OVL_CHAIN (NODE))
776
777 /* OVL_HIDDEN_P nodes come before other nodes. */
778
779 struct GTY(()) tree_overload {
780 struct tree_common common;
781 tree function;
782 };
783
784 /* Iterator for a 1 dimensional overload. Permits iterating over the
785 outer level of a 2-d overload when explicitly enabled. */
786
787 class ovl_iterator
788 {
789 tree ovl;
790 const bool allow_inner; /* Only used when checking. */
791
792 public:
793 explicit ovl_iterator (tree o, bool allow = false)
ovl(o)794 : ovl (o), allow_inner (allow)
795 {
796 }
797
798 private:
799 /* Do not duplicate. */
800 ovl_iterator &operator= (const ovl_iterator &);
801 ovl_iterator (const ovl_iterator &);
802
803 public:
804 operator bool () const
805 {
806 return ovl;
807 }
808 ovl_iterator &operator++ ()
809 {
810 ovl = TREE_CODE (ovl) != OVERLOAD ? NULL_TREE : OVL_CHAIN (ovl);
811 return *this;
812 }
813 tree operator* () const
814 {
815 tree fn = TREE_CODE (ovl) != OVERLOAD ? ovl : OVL_FUNCTION (ovl);
816
817 /* Check this is not an unexpected 2-dimensional overload. */
818 gcc_checking_assert (allow_inner || TREE_CODE (fn) != OVERLOAD);
819
820 return fn;
821 }
822
823 public:
824 /* Whether this overload was introduced by a using decl. */
using_p()825 bool using_p () const
826 {
827 return (TREE_CODE (ovl) == USING_DECL
828 || (TREE_CODE (ovl) == OVERLOAD && OVL_USING_P (ovl)));
829 }
hidden_p()830 bool hidden_p () const
831 {
832 return TREE_CODE (ovl) == OVERLOAD && OVL_HIDDEN_P (ovl);
833 }
834
835 public:
remove_node(tree head)836 tree remove_node (tree head)
837 {
838 return remove_node (head, ovl);
839 }
reveal_node(tree head)840 tree reveal_node (tree head)
841 {
842 return reveal_node (head, ovl);
843 }
844
845 protected:
846 /* If we have a nested overload, point at the inner overload and
847 return the next link on the outer one. */
maybe_push()848 tree maybe_push ()
849 {
850 tree r = NULL_TREE;
851
852 if (ovl && TREE_CODE (ovl) == OVERLOAD && OVL_NESTED_P (ovl))
853 {
854 r = OVL_CHAIN (ovl);
855 ovl = OVL_FUNCTION (ovl);
856 }
857 return r;
858 }
859 /* Restore an outer nested overload. */
pop(tree outer)860 void pop (tree outer)
861 {
862 gcc_checking_assert (!ovl);
863 ovl = outer;
864 }
865
866 private:
867 /* We make these static functions to avoid the address of the
868 iterator escaping the local context. */
869 static tree remove_node (tree head, tree node);
870 static tree reveal_node (tree ovl, tree node);
871 };
872
873 /* Iterator over a (potentially) 2 dimensional overload, which is
874 produced by name lookup. */
875
876 class lkp_iterator : public ovl_iterator
877 {
878 typedef ovl_iterator parent;
879
880 tree outer;
881
882 public:
lkp_iterator(tree o)883 explicit lkp_iterator (tree o)
884 : parent (o, true), outer (maybe_push ())
885 {
886 }
887
888 public:
889 lkp_iterator &operator++ ()
890 {
891 bool repush = !outer;
892
893 if (!parent::operator++ () && !repush)
894 {
895 pop (outer);
896 repush = true;
897 }
898
899 if (repush)
900 outer = maybe_push ();
901
902 return *this;
903 }
904 };
905
906 /* hash traits for declarations. Hashes potential overload sets via
907 DECL_NAME. */
908
909 struct named_decl_hash : ggc_remove <tree>
910 {
911 typedef tree value_type; /* A DECL or OVERLOAD */
912 typedef tree compare_type; /* An identifier. */
913
914 inline static hashval_t hash (const value_type decl);
915 inline static bool equal (const value_type existing, compare_type candidate);
916
917 static const bool empty_zero_p = true;
mark_emptynamed_decl_hash918 static inline void mark_empty (value_type &p) {p = NULL_TREE;}
is_emptynamed_decl_hash919 static inline bool is_empty (value_type p) {return !p;}
920
921 /* Nothing is deletable. Everything is insertable. */
is_deletednamed_decl_hash922 static bool is_deleted (value_type) { return false; }
mark_deletednamed_decl_hash923 static void mark_deleted (value_type) { gcc_unreachable (); }
924 };
925
926 /* Simplified unique_ptr clone to release a tree vec on exit. */
927
928 class releasing_vec
929 {
930 public:
931 typedef vec<tree, va_gc> vec_t;
932
releasing_vec(vec_t * v)933 releasing_vec (vec_t *v): v(v) { }
releasing_vec()934 releasing_vec (): v(make_tree_vector ()) { }
935
936 /* Copy ops are deliberately declared but not defined,
937 copies must always be elided. */
938 releasing_vec (const releasing_vec &);
939 releasing_vec &operator= (const releasing_vec &);
940
941 vec_t &operator* () const { return *v; }
942 vec_t *operator-> () const { return v; }
get()943 vec_t *get() const { return v; }
944 operator vec_t *() const { return v; }
945 vec_t ** operator& () { return &v; }
946
947 /* Breaks pointer/value consistency for convenience. */
948 tree& operator[] (unsigned i) const { return (*v)[i]; }
949
~releasing_vec()950 ~releasing_vec() { release_tree_vector (v); }
951 private:
952 vec_t *v;
953 };
954 /* Forwarding functions for vec_safe_* that might reallocate. */
vec_safe_push(releasing_vec & r,const tree & t CXX_MEM_STAT_INFO)955 inline tree* vec_safe_push (releasing_vec& r, const tree &t CXX_MEM_STAT_INFO)
956 { return vec_safe_push (*&r, t PASS_MEM_STAT); }
957 inline bool vec_safe_reserve (releasing_vec& r, unsigned n, bool e = false CXX_MEM_STAT_INFO)
958 { return vec_safe_reserve (*&r, n, e PASS_MEM_STAT); }
vec_safe_length(releasing_vec & r)959 inline unsigned vec_safe_length (releasing_vec &r)
960 { return r->length(); }
vec_safe_splice(releasing_vec & r,vec<tree,va_gc> * p CXX_MEM_STAT_INFO)961 inline void vec_safe_splice (releasing_vec &r, vec<tree, va_gc> *p CXX_MEM_STAT_INFO)
962 { vec_safe_splice (*&r, p PASS_MEM_STAT); }
963 void release_tree_vector (releasing_vec &); // cause link error
964
965 struct GTY(()) tree_template_decl {
966 struct tree_decl_common common;
967 tree arguments;
968 tree result;
969 };
970
971 /* Returns true iff NODE is a BASELINK. */
972 #define BASELINK_P(NODE) \
973 (TREE_CODE (NODE) == BASELINK)
974 /* The BINFO indicating the base in which lookup found the
975 BASELINK_FUNCTIONS. */
976 #define BASELINK_BINFO(NODE) \
977 (((struct tree_baselink*) BASELINK_CHECK (NODE))->binfo)
978 /* The functions referred to by the BASELINK; either a FUNCTION_DECL,
979 a TEMPLATE_DECL, an OVERLOAD, or a TEMPLATE_ID_EXPR. */
980 #define BASELINK_FUNCTIONS(NODE) \
981 (((struct tree_baselink*) BASELINK_CHECK (NODE))->functions)
982 /* If T is a BASELINK, grab the functions, otherwise just T, which is
983 expected to already be a (list of) functions. */
984 #define MAYBE_BASELINK_FUNCTIONS(T) \
985 (BASELINK_P (T) ? BASELINK_FUNCTIONS (T) : T)
986 /* The BINFO in which the search for the functions indicated by this baselink
987 began. This base is used to determine the accessibility of functions
988 selected by overload resolution. */
989 #define BASELINK_ACCESS_BINFO(NODE) \
990 (((struct tree_baselink*) BASELINK_CHECK (NODE))->access_binfo)
991 /* For a type-conversion operator, the BASELINK_OPTYPE indicates the type
992 to which the conversion should occur. This value is important if
993 the BASELINK_FUNCTIONS include a template conversion operator --
994 the BASELINK_OPTYPE can be used to determine what type the user
995 requested. */
996 #define BASELINK_OPTYPE(NODE) \
997 (TREE_CHAIN (BASELINK_CHECK (NODE)))
998 /* Nonzero if this baselink was from a qualified lookup. */
999 #define BASELINK_QUALIFIED_P(NODE) \
1000 TREE_LANG_FLAG_0 (BASELINK_CHECK (NODE))
1001
1002 struct GTY(()) tree_baselink {
1003 struct tree_common common;
1004 tree binfo;
1005 tree functions;
1006 tree access_binfo;
1007 };
1008
1009 /* The different kinds of ids that we encounter. */
1010
1011 enum cp_id_kind
1012 {
1013 /* Not an id at all. */
1014 CP_ID_KIND_NONE,
1015 /* An unqualified-id that is not a template-id. */
1016 CP_ID_KIND_UNQUALIFIED,
1017 /* An unqualified-id that is a dependent name. */
1018 CP_ID_KIND_UNQUALIFIED_DEPENDENT,
1019 /* An unqualified template-id. */
1020 CP_ID_KIND_TEMPLATE_ID,
1021 /* A qualified-id. */
1022 CP_ID_KIND_QUALIFIED
1023 };
1024
1025
1026 /* The various kinds of C++0x warnings we encounter. */
1027
1028 enum cpp0x_warn_str
1029 {
1030 /* extended initializer lists */
1031 CPP0X_INITIALIZER_LISTS,
1032 /* explicit conversion operators */
1033 CPP0X_EXPLICIT_CONVERSION,
1034 /* variadic templates */
1035 CPP0X_VARIADIC_TEMPLATES,
1036 /* lambda expressions */
1037 CPP0X_LAMBDA_EXPR,
1038 /* C++0x auto */
1039 CPP0X_AUTO,
1040 /* scoped enums */
1041 CPP0X_SCOPED_ENUMS,
1042 /* defaulted and deleted functions */
1043 CPP0X_DEFAULTED_DELETED,
1044 /* inline namespaces */
1045 CPP0X_INLINE_NAMESPACES,
1046 /* override controls, override/final */
1047 CPP0X_OVERRIDE_CONTROLS,
1048 /* non-static data member initializers */
1049 CPP0X_NSDMI,
1050 /* user defined literals */
1051 CPP0X_USER_DEFINED_LITERALS,
1052 /* delegating constructors */
1053 CPP0X_DELEGATING_CTORS,
1054 /* inheriting constructors */
1055 CPP0X_INHERITING_CTORS,
1056 /* C++11 attributes */
1057 CPP0X_ATTRIBUTES,
1058 /* ref-qualified member functions */
1059 CPP0X_REF_QUALIFIER
1060 };
1061
1062 /* The various kinds of operation used by composite_pointer_type. */
1063
1064 enum composite_pointer_operation
1065 {
1066 /* comparison */
1067 CPO_COMPARISON,
1068 /* conversion */
1069 CPO_CONVERSION,
1070 /* conditional expression */
1071 CPO_CONDITIONAL_EXPR
1072 };
1073
1074 /* Possible cases of expression list used by build_x_compound_expr_from_list. */
1075 enum expr_list_kind {
1076 ELK_INIT, /* initializer */
1077 ELK_MEM_INIT, /* member initializer */
1078 ELK_FUNC_CAST /* functional cast */
1079 };
1080
1081 /* Possible cases of implicit bad rhs conversions. */
1082 enum impl_conv_rhs {
1083 ICR_DEFAULT_ARGUMENT, /* default argument */
1084 ICR_CONVERTING, /* converting */
1085 ICR_INIT, /* initialization */
1086 ICR_ARGPASS, /* argument passing */
1087 ICR_RETURN, /* return */
1088 ICR_ASSIGN /* assignment */
1089 };
1090
1091 /* Possible cases of implicit or explicit bad conversions to void. */
1092 enum impl_conv_void {
1093 ICV_CAST, /* (explicit) conversion to void */
1094 ICV_SECOND_OF_COND, /* second operand of conditional expression */
1095 ICV_THIRD_OF_COND, /* third operand of conditional expression */
1096 ICV_RIGHT_OF_COMMA, /* right operand of comma operator */
1097 ICV_LEFT_OF_COMMA, /* left operand of comma operator */
1098 ICV_STATEMENT, /* statement */
1099 ICV_THIRD_IN_FOR /* for increment expression */
1100 };
1101
1102 /* Possible invalid uses of an abstract class that might not have a
1103 specific associated declaration. */
1104 enum GTY(()) abstract_class_use {
1105 ACU_UNKNOWN, /* unknown or decl provided */
1106 ACU_CAST, /* cast to abstract class */
1107 ACU_NEW, /* new-expression of abstract class */
1108 ACU_THROW, /* throw-expression of abstract class */
1109 ACU_CATCH, /* catch-parameter of abstract class */
1110 ACU_ARRAY, /* array of abstract class */
1111 ACU_RETURN, /* return type of abstract class */
1112 ACU_PARM /* parameter type of abstract class */
1113 };
1114
1115 /* Macros for access to language-specific slots in an identifier. */
1116
1117 /* The IDENTIFIER_BINDING is the innermost cxx_binding for the
1118 identifier. Its PREVIOUS is the next outermost binding. Each
1119 VALUE field is a DECL for the associated declaration. Thus,
1120 name lookup consists simply of pulling off the node at the front
1121 of the list (modulo oddities for looking up the names of types,
1122 and such.) You can use SCOPE field to determine the scope
1123 that bound the name. */
1124 #define IDENTIFIER_BINDING(NODE) \
1125 (LANG_IDENTIFIER_CAST (NODE)->bindings)
1126
1127 /* TREE_TYPE only indicates on local and class scope the current
1128 type. For namespace scope, the presence of a type in any namespace
1129 is indicated with global_type_node, and the real type behind must
1130 be found through lookup. */
1131 #define IDENTIFIER_TYPE_VALUE(NODE) identifier_type_value (NODE)
1132 #define REAL_IDENTIFIER_TYPE_VALUE(NODE) TREE_TYPE (NODE)
1133 #define SET_IDENTIFIER_TYPE_VALUE(NODE,TYPE) (TREE_TYPE (NODE) = (TYPE))
1134 #define IDENTIFIER_HAS_TYPE_VALUE(NODE) (IDENTIFIER_TYPE_VALUE (NODE) ? 1 : 0)
1135
1136 /* Kinds of identifiers. Values are carefully chosen. */
1137 enum cp_identifier_kind {
1138 cik_normal = 0, /* Not a special identifier. */
1139 cik_keyword = 1, /* A keyword. */
1140 cik_ctor = 2, /* Constructor (in-chg, complete or base). */
1141 cik_dtor = 3, /* Destructor (in-chg, deleting, complete or
1142 base). */
1143 cik_simple_op = 4, /* Non-assignment operator name. */
1144 cik_assign_op = 5, /* An assignment operator name. */
1145 cik_conv_op = 6, /* Conversion operator name. */
1146 cik_reserved_for_udlit = 7, /* Not yet in use */
1147 cik_max
1148 };
1149
1150 /* Kind bits. */
1151 #define IDENTIFIER_KIND_BIT_0(NODE) \
1152 TREE_LANG_FLAG_0 (IDENTIFIER_NODE_CHECK (NODE))
1153 #define IDENTIFIER_KIND_BIT_1(NODE) \
1154 TREE_LANG_FLAG_1 (IDENTIFIER_NODE_CHECK (NODE))
1155 #define IDENTIFIER_KIND_BIT_2(NODE) \
1156 TREE_LANG_FLAG_2 (IDENTIFIER_NODE_CHECK (NODE))
1157
1158 /* Used by various search routines. */
1159 #define IDENTIFIER_MARKED(NODE) \
1160 TREE_LANG_FLAG_4 (IDENTIFIER_NODE_CHECK (NODE))
1161
1162 /* Nonzero if this identifier is used as a virtual function name somewhere
1163 (optimizes searches). */
1164 #define IDENTIFIER_VIRTUAL_P(NODE) \
1165 TREE_LANG_FLAG_5 (IDENTIFIER_NODE_CHECK (NODE))
1166
1167 /* True if this identifier is a reserved word. C_RID_CODE (node) is
1168 then the RID_* value of the keyword. Value 1. */
1169 #define IDENTIFIER_KEYWORD_P(NODE) \
1170 ((!IDENTIFIER_KIND_BIT_2 (NODE)) \
1171 & (!IDENTIFIER_KIND_BIT_1 (NODE)) \
1172 & IDENTIFIER_KIND_BIT_0 (NODE))
1173
1174 /* True if this identifier is the name of a constructor or
1175 destructor. Value 2 or 3. */
1176 #define IDENTIFIER_CDTOR_P(NODE) \
1177 ((!IDENTIFIER_KIND_BIT_2 (NODE)) \
1178 & IDENTIFIER_KIND_BIT_1 (NODE))
1179
1180 /* True if this identifier is the name of a constructor. Value 2. */
1181 #define IDENTIFIER_CTOR_P(NODE) \
1182 (IDENTIFIER_CDTOR_P(NODE) \
1183 & (!IDENTIFIER_KIND_BIT_0 (NODE)))
1184
1185 /* True if this identifier is the name of a destructor. Value 3. */
1186 #define IDENTIFIER_DTOR_P(NODE) \
1187 (IDENTIFIER_CDTOR_P(NODE) \
1188 & IDENTIFIER_KIND_BIT_0 (NODE))
1189
1190 /* True if this identifier is for any operator name (including
1191 conversions). Value 4, 5, 6 or 7. */
1192 #define IDENTIFIER_ANY_OP_P(NODE) \
1193 (IDENTIFIER_KIND_BIT_2 (NODE))
1194
1195 /* True if this identifier is for an overloaded operator. Values 4, 5. */
1196 #define IDENTIFIER_OVL_OP_P(NODE) \
1197 (IDENTIFIER_ANY_OP_P (NODE) \
1198 & (!IDENTIFIER_KIND_BIT_1 (NODE)))
1199
1200 /* True if this identifier is for any assignment. Values 5. */
1201 #define IDENTIFIER_ASSIGN_OP_P(NODE) \
1202 (IDENTIFIER_OVL_OP_P (NODE) \
1203 & IDENTIFIER_KIND_BIT_0 (NODE))
1204
1205 /* True if this identifier is the name of a type-conversion
1206 operator. Value 7. */
1207 #define IDENTIFIER_CONV_OP_P(NODE) \
1208 (IDENTIFIER_ANY_OP_P (NODE) \
1209 & IDENTIFIER_KIND_BIT_1 (NODE) \
1210 & (!IDENTIFIER_KIND_BIT_0 (NODE)))
1211
1212 /* True if this identifier is a new or delete operator. */
1213 #define IDENTIFIER_NEWDEL_OP_P(NODE) \
1214 (IDENTIFIER_OVL_OP_P (NODE) \
1215 && IDENTIFIER_OVL_OP_FLAGS (NODE) & OVL_OP_FLAG_ALLOC)
1216
1217 /* True if this identifier is a new operator. */
1218 #define IDENTIFIER_NEW_OP_P(NODE) \
1219 (IDENTIFIER_OVL_OP_P (NODE) \
1220 && (IDENTIFIER_OVL_OP_FLAGS (NODE) \
1221 & (OVL_OP_FLAG_ALLOC | OVL_OP_FLAG_DELETE)) == OVL_OP_FLAG_ALLOC)
1222
1223 /* Access a C++-specific index for identifier NODE.
1224 Used to optimize operator mappings etc. */
1225 #define IDENTIFIER_CP_INDEX(NODE) \
1226 (IDENTIFIER_NODE_CHECK(NODE)->base.u.bits.address_space)
1227
1228 /* In a RECORD_TYPE or UNION_TYPE, nonzero if any component is read-only. */
1229 #define C_TYPE_FIELDS_READONLY(TYPE) \
1230 (LANG_TYPE_CLASS_CHECK (TYPE)->fields_readonly)
1231
1232 /* The tokens stored in the unparsed operand. */
1233
1234 #define DEFPARSE_TOKENS(NODE) \
1235 (((struct tree_deferred_parse *)DEFERRED_PARSE_CHECK (NODE))->tokens)
1236 #define DEFPARSE_INSTANTIATIONS(NODE) \
1237 (((struct tree_deferred_parse *)DEFERRED_PARSE_CHECK (NODE))->instantiations)
1238
1239 struct GTY (()) tree_deferred_parse {
1240 struct tree_base base;
1241 struct cp_token_cache *tokens;
1242 vec<tree, va_gc> *instantiations;
1243 };
1244
1245
1246 #define DEFERRED_NOEXCEPT_PATTERN(NODE) \
1247 (((struct tree_deferred_noexcept *)DEFERRED_NOEXCEPT_CHECK (NODE))->pattern)
1248 #define DEFERRED_NOEXCEPT_ARGS(NODE) \
1249 (((struct tree_deferred_noexcept *)DEFERRED_NOEXCEPT_CHECK (NODE))->args)
1250 #define DEFERRED_NOEXCEPT_SPEC_P(NODE) \
1251 ((NODE) && (TREE_PURPOSE (NODE)) \
1252 && (TREE_CODE (TREE_PURPOSE (NODE)) == DEFERRED_NOEXCEPT))
1253 #define UNEVALUATED_NOEXCEPT_SPEC_P(NODE) \
1254 (DEFERRED_NOEXCEPT_SPEC_P (NODE) \
1255 && DEFERRED_NOEXCEPT_PATTERN (TREE_PURPOSE (NODE)) == NULL_TREE)
1256 #define UNPARSED_NOEXCEPT_SPEC_P(NODE) \
1257 ((NODE) && (TREE_PURPOSE (NODE)) \
1258 && (TREE_CODE (TREE_PURPOSE (NODE)) == DEFERRED_PARSE))
1259
1260 struct GTY (()) tree_deferred_noexcept {
1261 struct tree_base base;
1262 tree pattern;
1263 tree args;
1264 };
1265
1266
1267 /* The condition associated with the static assertion. This must be
1268 an integral constant expression. */
1269 #define STATIC_ASSERT_CONDITION(NODE) \
1270 (((struct tree_static_assert *)STATIC_ASSERT_CHECK (NODE))->condition)
1271
1272 /* The message associated with the static assertion. This must be a
1273 string constant, which will be emitted as an error message when the
1274 static assert condition is false. */
1275 #define STATIC_ASSERT_MESSAGE(NODE) \
1276 (((struct tree_static_assert *)STATIC_ASSERT_CHECK (NODE))->message)
1277
1278 /* Source location information for a static assertion. */
1279 #define STATIC_ASSERT_SOURCE_LOCATION(NODE) \
1280 (((struct tree_static_assert *)STATIC_ASSERT_CHECK (NODE))->location)
1281
1282 struct GTY (()) tree_static_assert {
1283 struct tree_common common;
1284 tree condition;
1285 tree message;
1286 location_t location;
1287 };
1288
1289 struct GTY (()) tree_argument_pack_select {
1290 struct tree_common common;
1291 tree argument_pack;
1292 int index;
1293 };
1294
1295 /* The different kinds of traits that we encounter. */
1296
1297 enum cp_trait_kind
1298 {
1299 CPTK_BASES,
1300 CPTK_DIRECT_BASES,
1301 CPTK_HAS_NOTHROW_ASSIGN,
1302 CPTK_HAS_NOTHROW_CONSTRUCTOR,
1303 CPTK_HAS_NOTHROW_COPY,
1304 CPTK_HAS_TRIVIAL_ASSIGN,
1305 CPTK_HAS_TRIVIAL_CONSTRUCTOR,
1306 CPTK_HAS_TRIVIAL_COPY,
1307 CPTK_HAS_TRIVIAL_DESTRUCTOR,
1308 CPTK_HAS_UNIQUE_OBJ_REPRESENTATIONS,
1309 CPTK_HAS_VIRTUAL_DESTRUCTOR,
1310 CPTK_IS_ABSTRACT,
1311 CPTK_IS_AGGREGATE,
1312 CPTK_IS_BASE_OF,
1313 CPTK_IS_CLASS,
1314 CPTK_IS_EMPTY,
1315 CPTK_IS_ENUM,
1316 CPTK_IS_FINAL,
1317 CPTK_IS_LITERAL_TYPE,
1318 CPTK_IS_POD,
1319 CPTK_IS_POLYMORPHIC,
1320 CPTK_IS_SAME_AS,
1321 CPTK_IS_STD_LAYOUT,
1322 CPTK_IS_TRIVIAL,
1323 CPTK_IS_TRIVIALLY_ASSIGNABLE,
1324 CPTK_IS_TRIVIALLY_CONSTRUCTIBLE,
1325 CPTK_IS_TRIVIALLY_COPYABLE,
1326 CPTK_IS_UNION,
1327 CPTK_UNDERLYING_TYPE,
1328 CPTK_IS_ASSIGNABLE,
1329 CPTK_IS_CONSTRUCTIBLE
1330 };
1331
1332 /* The types that we are processing. */
1333 #define TRAIT_EXPR_TYPE1(NODE) \
1334 (((struct tree_trait_expr *)TRAIT_EXPR_CHECK (NODE))->type1)
1335
1336 #define TRAIT_EXPR_TYPE2(NODE) \
1337 (((struct tree_trait_expr *)TRAIT_EXPR_CHECK (NODE))->type2)
1338
1339 /* The specific trait that we are processing. */
1340 #define TRAIT_EXPR_KIND(NODE) \
1341 (((struct tree_trait_expr *)TRAIT_EXPR_CHECK (NODE))->kind)
1342
1343 #define TRAIT_EXPR_LOCATION(NODE) \
1344 (((struct tree_trait_expr *)TRAIT_EXPR_CHECK (NODE))->locus)
1345
1346 struct GTY (()) tree_trait_expr {
1347 struct tree_common common;
1348 tree type1;
1349 tree type2;
1350 location_t locus;
1351 enum cp_trait_kind kind;
1352 };
1353
1354 /* Identifiers used for lambda types are almost anonymous. Use this
1355 spare flag to distinguish them (they also have the anonymous flag). */
1356 #define IDENTIFIER_LAMBDA_P(NODE) \
1357 (IDENTIFIER_NODE_CHECK(NODE)->base.protected_flag)
1358
1359 /* Based off of TYPE_UNNAMED_P. */
1360 #define LAMBDA_TYPE_P(NODE) \
1361 (TREE_CODE (NODE) == RECORD_TYPE \
1362 && TYPE_LINKAGE_IDENTIFIER (NODE) \
1363 && IDENTIFIER_LAMBDA_P (TYPE_LINKAGE_IDENTIFIER (NODE)))
1364
1365 /* Test if FUNCTION_DECL is a lambda function. */
1366 #define LAMBDA_FUNCTION_P(FNDECL) \
1367 (DECL_DECLARES_FUNCTION_P (FNDECL) \
1368 && DECL_OVERLOADED_OPERATOR_P (FNDECL) \
1369 && DECL_OVERLOADED_OPERATOR_IS (FNDECL, CALL_EXPR) \
1370 && LAMBDA_TYPE_P (CP_DECL_CONTEXT (FNDECL)))
1371
1372 enum cp_lambda_default_capture_mode_type {
1373 CPLD_NONE,
1374 CPLD_COPY,
1375 CPLD_REFERENCE
1376 };
1377
1378 /* The method of default capture, if any. */
1379 #define LAMBDA_EXPR_DEFAULT_CAPTURE_MODE(NODE) \
1380 (((struct tree_lambda_expr *)LAMBDA_EXPR_CHECK (NODE))->default_capture_mode)
1381
1382 /* The capture-list, including `this'. Each capture is stored as a FIELD_DECL
1383 * so that the name, type, and field are all together, whether or not it has
1384 * been added to the lambda's class type.
1385 TREE_LIST:
1386 TREE_PURPOSE: The FIELD_DECL for this capture.
1387 TREE_VALUE: The initializer. This is part of a GNU extension. */
1388 #define LAMBDA_EXPR_CAPTURE_LIST(NODE) \
1389 (((struct tree_lambda_expr *)LAMBDA_EXPR_CHECK (NODE))->capture_list)
1390
1391 /* During parsing of the lambda-introducer, the node in the capture-list
1392 that holds the 'this' capture. During parsing of the body, the
1393 capture proxy for that node. */
1394 #define LAMBDA_EXPR_THIS_CAPTURE(NODE) \
1395 (((struct tree_lambda_expr *)LAMBDA_EXPR_CHECK (NODE))->this_capture)
1396
1397 /* Predicate tracking whether `this' is in the effective capture set. */
1398 #define LAMBDA_EXPR_CAPTURES_THIS_P(NODE) \
1399 LAMBDA_EXPR_THIS_CAPTURE(NODE)
1400
1401 /* Predicate tracking whether the lambda was declared 'mutable'. */
1402 #define LAMBDA_EXPR_MUTABLE_P(NODE) \
1403 TREE_LANG_FLAG_1 (LAMBDA_EXPR_CHECK (NODE))
1404
1405 /* True iff uses of a const variable capture were optimized away. */
1406 #define LAMBDA_EXPR_CAPTURE_OPTIMIZED(NODE) \
1407 TREE_LANG_FLAG_2 (LAMBDA_EXPR_CHECK (NODE))
1408
1409 /* True iff this LAMBDA_EXPR was generated in tsubst_lambda_expr. */
1410 #define LAMBDA_EXPR_INSTANTIATED(NODE) \
1411 TREE_LANG_FLAG_3 (LAMBDA_EXPR_CHECK (NODE))
1412
1413 /* True if this TREE_LIST in LAMBDA_EXPR_CAPTURE_LIST is for an explicit
1414 capture. */
1415 #define LAMBDA_CAPTURE_EXPLICIT_P(NODE) \
1416 TREE_LANG_FLAG_0 (TREE_LIST_CHECK (NODE))
1417
1418 /* The source location of the lambda. */
1419 #define LAMBDA_EXPR_LOCATION(NODE) \
1420 (((struct tree_lambda_expr *)LAMBDA_EXPR_CHECK (NODE))->locus)
1421
1422 /* The mangling scope for the lambda: FUNCTION_DECL, PARM_DECL, VAR_DECL,
1423 FIELD_DECL or NULL_TREE. If this is NULL_TREE, we have no linkage. */
1424 #define LAMBDA_EXPR_EXTRA_SCOPE(NODE) \
1425 (((struct tree_lambda_expr *)LAMBDA_EXPR_CHECK (NODE))->extra_scope)
1426
1427 /* If EXTRA_SCOPE, this is the number of the lambda within that scope. */
1428 #define LAMBDA_EXPR_DISCRIMINATOR(NODE) \
1429 (((struct tree_lambda_expr *)LAMBDA_EXPR_CHECK (NODE))->discriminator)
1430
1431 /* During parsing of the lambda, a vector of capture proxies which need
1432 to be pushed once we're done processing a nested lambda. */
1433 #define LAMBDA_EXPR_PENDING_PROXIES(NODE) \
1434 (((struct tree_lambda_expr *)LAMBDA_EXPR_CHECK (NODE))->pending_proxies)
1435
1436 /* The closure type of the lambda, which is also the type of the
1437 LAMBDA_EXPR. */
1438 #define LAMBDA_EXPR_CLOSURE(NODE) \
1439 (TREE_TYPE (LAMBDA_EXPR_CHECK (NODE)))
1440
1441 struct GTY (()) tree_lambda_expr
1442 {
1443 struct tree_typed typed;
1444 tree capture_list;
1445 tree this_capture;
1446 tree extra_scope;
1447 vec<tree, va_gc> *pending_proxies;
1448 location_t locus;
1449 enum cp_lambda_default_capture_mode_type default_capture_mode;
1450 int discriminator;
1451 };
1452
1453 /* A (typedef,context,usage location) triplet.
1454 It represents a typedef used through a
1455 context at a given source location.
1456 e.g.
1457 struct foo {
1458 typedef int myint;
1459 };
1460
1461 struct bar {
1462 foo::myint v; // #1<-- this location.
1463 };
1464
1465 In bar, the triplet will be (myint, foo, #1).
1466 */
1467 struct GTY(()) qualified_typedef_usage_s {
1468 tree typedef_decl;
1469 tree context;
1470 location_t locus;
1471 };
1472 typedef struct qualified_typedef_usage_s qualified_typedef_usage_t;
1473
1474 /* Non-zero if this template specialization has access violations that
1475 should be rechecked when the function is instantiated outside argument
1476 deduction. */
1477 #define TINFO_HAS_ACCESS_ERRORS(NODE) \
1478 (TREE_LANG_FLAG_0 (TEMPLATE_INFO_CHECK (NODE)))
1479 #define FNDECL_HAS_ACCESS_ERRORS(NODE) \
1480 (TINFO_HAS_ACCESS_ERRORS (DECL_TEMPLATE_INFO (NODE)))
1481
1482 /* Non-zero if this variable template specialization was specified using a
1483 template-id, so it's a partial or full specialization and not a definition
1484 of the member template of a particular class specialization. */
1485 #define TINFO_USED_TEMPLATE_ID(NODE) \
1486 (TREE_LANG_FLAG_1 (TEMPLATE_INFO_CHECK (NODE)))
1487
1488 /* Non-zero if this variable template specialization was declared with the
1489 `constinit' specifier. */
1490 #define TINFO_VAR_DECLARED_CONSTINIT(NODE) \
1491 (TREE_LANG_FLAG_2 (TEMPLATE_INFO_CHECK (NODE)))
1492
1493 struct GTY(()) tree_template_info {
1494 struct tree_base base;
1495 tree tmpl;
1496 tree args;
1497 vec<qualified_typedef_usage_t, va_gc> *typedefs_needing_access_checking;
1498 };
1499
1500 // Constraint information for a C++ declaration. Constraint information is
1501 // comprised of:
1502 //
1503 // - a constraint expression introduced by the template header
1504 // - a constraint expression introduced by a function declarator
1505 // - the associated constraints, which are the conjunction of those,
1506 // and used for declaration matching
1507 //
1508 // The template and declarator requirements are kept to support pretty
1509 // printing constrained declarations.
1510 struct GTY(()) tree_constraint_info {
1511 struct tree_base base;
1512 tree template_reqs;
1513 tree declarator_reqs;
1514 tree associated_constr;
1515 };
1516
1517 // Require that pointer P is non-null before returning.
1518 template<typename T>
1519 inline T*
check_nonnull(T * p)1520 check_nonnull (T* p)
1521 {
1522 gcc_assert (p);
1523 return p;
1524 }
1525
1526 /* Returns true iff T is non-null and represents constraint info. */
1527 inline tree_constraint_info *
check_constraint_info(tree t)1528 check_constraint_info (tree t)
1529 {
1530 if (t && TREE_CODE (t) == CONSTRAINT_INFO)
1531 return (tree_constraint_info *)t;
1532 return NULL;
1533 }
1534
1535 /* Access the expression describing the template constraints. This may be
1536 null if no constraints were introduced in the template parameter list,
1537 a requirements clause after the template parameter list, or constraints
1538 through a constrained-type-specifier. */
1539 #define CI_TEMPLATE_REQS(NODE) \
1540 check_constraint_info (check_nonnull (NODE))->template_reqs
1541
1542 /* Access the expression describing the trailing constraints. This is non-null
1543 for any implicit instantiation of a constrained declaration. For a
1544 templated declaration it is non-null only when a trailing requires-clause
1545 was specified. */
1546 #define CI_DECLARATOR_REQS(NODE) \
1547 check_constraint_info (check_nonnull (NODE))->declarator_reqs
1548
1549 /* The computed associated constraint expression for a declaration. */
1550 #define CI_ASSOCIATED_CONSTRAINTS(NODE) \
1551 check_constraint_info (check_nonnull (NODE))->associated_constr
1552
1553 /* Access the constraint-expression introduced by the requires-clause
1554 associate the template parameter list NODE. */
1555 #define TEMPLATE_PARMS_CONSTRAINTS(NODE) \
1556 TREE_TYPE (TREE_LIST_CHECK (NODE))
1557
1558 /* Access the logical constraints on the template parameter declaration
1559 indicated by NODE. */
1560 #define TEMPLATE_PARM_CONSTRAINTS(NODE) \
1561 TREE_TYPE (TREE_LIST_CHECK (NODE))
1562
1563 /* Non-zero if the noexcept is present in a compound requirement. */
1564 #define COMPOUND_REQ_NOEXCEPT_P(NODE) \
1565 TREE_LANG_FLAG_0 (TREE_CHECK (NODE, COMPOUND_REQ))
1566
1567 /* The constraints on an 'auto' placeholder type, used in an argument deduction
1568 constraint. */
1569 #define PLACEHOLDER_TYPE_CONSTRAINTS(NODE) \
1570 DECL_SIZE_UNIT (TYPE_NAME (NODE))
1571
1572 /* True if NODE is a constraint. */
1573 #define CONSTR_P(NODE) \
1574 (TREE_CODE (NODE) == ATOMIC_CONSTR \
1575 || TREE_CODE (NODE) == CONJ_CONSTR \
1576 || TREE_CODE (NODE) == DISJ_CONSTR)
1577
1578 /* Valid for any normalized constraint. */
1579 #define CONSTR_CHECK(NODE) \
1580 TREE_CHECK3 (NODE, ATOMIC_CONSTR, CONJ_CONSTR, DISJ_CONSTR)
1581
1582 /* The CONSTR_INFO stores normalization data for a constraint. It refers to
1583 the original expression and the expression or declaration
1584 from which the constraint was normalized.
1585
1586 This is TREE_LIST whose TREE_PURPOSE is the original expression and whose
1587 TREE_VALUE is a list of contexts. */
1588 #define CONSTR_INFO(NODE) \
1589 TREE_TYPE (CONSTR_CHECK (NODE))
1590
1591 /* The expression evaluated by the constraint. */
1592 #define CONSTR_EXPR(NODE) \
1593 TREE_PURPOSE (CONSTR_INFO (NODE))
1594
1595 /* The expression or declaration from which this constraint was normalized.
1596 This is a TREE_LIST whose TREE_VALUE is either a template-id expression
1597 denoting a concept check or the declaration introducing the constraint.
1598 These are chained to other context objects. */
1599 #define CONSTR_CONTEXT(NODE) \
1600 TREE_VALUE (CONSTR_INFO (NODE))
1601
1602 /* The parameter mapping for an atomic constraint. */
1603 #define ATOMIC_CONSTR_MAP(NODE) \
1604 TREE_OPERAND (TREE_CHECK (NODE, ATOMIC_CONSTR), 0)
1605
1606 /* The expression of an atomic constraint. */
1607 #define ATOMIC_CONSTR_EXPR(NODE) \
1608 CONSTR_EXPR (ATOMIC_CONSTR_CHECK (NODE))
1609
1610 /* The concept of a concept check. */
1611 #define CHECK_CONSTR_CONCEPT(NODE) \
1612 TREE_OPERAND (TREE_CHECK (NODE, CHECK_CONSTR), 0)
1613
1614 /* The template arguments of a concept check. */
1615 #define CHECK_CONSTR_ARGS(NODE) \
1616 TREE_OPERAND (TREE_CHECK (NODE, CHECK_CONSTR), 1)
1617
1618 /* Whether a PARM_DECL represents a local parameter in a
1619 requires-expression. */
1620 #define CONSTRAINT_VAR_P(NODE) \
1621 DECL_LANG_FLAG_2 (TREE_CHECK (NODE, PARM_DECL))
1622
1623 /* The concept constraining this constrained template-parameter. */
1624 #define CONSTRAINED_PARM_CONCEPT(NODE) \
1625 DECL_SIZE_UNIT (TYPE_DECL_CHECK (NODE))
1626 /* Any extra template arguments specified for a constrained
1627 template-parameter. */
1628 #define CONSTRAINED_PARM_EXTRA_ARGS(NODE) \
1629 DECL_SIZE (TYPE_DECL_CHECK (NODE))
1630 /* The first template parameter of CONSTRAINED_PARM_CONCEPT to be used as a
1631 prototype for the constrained parameter in finish_shorthand_constraint,
1632 attached for convenience. */
1633 #define CONSTRAINED_PARM_PROTOTYPE(NODE) \
1634 DECL_INITIAL (TYPE_DECL_CHECK (NODE))
1635
1636 enum cp_tree_node_structure_enum {
1637 TS_CP_GENERIC,
1638 TS_CP_IDENTIFIER,
1639 TS_CP_TPI,
1640 TS_CP_PTRMEM,
1641 TS_CP_OVERLOAD,
1642 TS_CP_BASELINK,
1643 TS_CP_TEMPLATE_DECL,
1644 TS_CP_DEFERRED_PARSE,
1645 TS_CP_DEFERRED_NOEXCEPT,
1646 TS_CP_STATIC_ASSERT,
1647 TS_CP_ARGUMENT_PACK_SELECT,
1648 TS_CP_TRAIT_EXPR,
1649 TS_CP_LAMBDA_EXPR,
1650 TS_CP_TEMPLATE_INFO,
1651 TS_CP_CONSTRAINT_INFO,
1652 TS_CP_USERDEF_LITERAL
1653 };
1654
1655 /* The resulting tree type. */
1656 union GTY((desc ("cp_tree_node_structure (&%h)"),
1657 chain_next ("(union lang_tree_node *) c_tree_chain_next (&%h.generic)"))) lang_tree_node {
1658 union tree_node GTY ((tag ("TS_CP_GENERIC"),
1659 desc ("tree_node_structure (&%h)"))) generic;
1660 struct template_parm_index GTY ((tag ("TS_CP_TPI"))) tpi;
1661 struct ptrmem_cst GTY ((tag ("TS_CP_PTRMEM"))) ptrmem;
1662 struct tree_overload GTY ((tag ("TS_CP_OVERLOAD"))) overload;
1663 struct tree_baselink GTY ((tag ("TS_CP_BASELINK"))) baselink;
1664 struct tree_template_decl GTY ((tag ("TS_CP_TEMPLATE_DECL"))) template_decl;
1665 struct tree_deferred_parse GTY ((tag ("TS_CP_DEFERRED_PARSE"))) deferred_parse;
1666 struct tree_deferred_noexcept GTY ((tag ("TS_CP_DEFERRED_NOEXCEPT"))) deferred_noexcept;
1667 struct lang_identifier GTY ((tag ("TS_CP_IDENTIFIER"))) identifier;
1668 struct tree_static_assert GTY ((tag ("TS_CP_STATIC_ASSERT")))
1669 static_assertion;
1670 struct tree_argument_pack_select GTY ((tag ("TS_CP_ARGUMENT_PACK_SELECT")))
1671 argument_pack_select;
1672 struct tree_trait_expr GTY ((tag ("TS_CP_TRAIT_EXPR")))
1673 trait_expression;
1674 struct tree_lambda_expr GTY ((tag ("TS_CP_LAMBDA_EXPR")))
1675 lambda_expression;
1676 struct tree_template_info GTY ((tag ("TS_CP_TEMPLATE_INFO")))
1677 template_info;
1678 struct tree_constraint_info GTY ((tag ("TS_CP_CONSTRAINT_INFO")))
1679 constraint_info;
1680 struct tree_userdef_literal GTY ((tag ("TS_CP_USERDEF_LITERAL")))
1681 userdef_literal;
1682 };
1683
1684
1685 /* Global state. */
1686
1687 struct GTY(()) saved_scope {
1688 vec<cxx_saved_binding, va_gc> *old_bindings;
1689 tree old_namespace;
1690 vec<tree, va_gc> *decl_ns_list;
1691 tree class_name;
1692 tree class_type;
1693 tree access_specifier;
1694 tree function_decl;
1695 vec<tree, va_gc> *lang_base;
1696 tree lang_name;
1697 tree template_parms;
1698 cp_binding_level *x_previous_class_level;
1699 tree x_saved_tree;
1700
1701 /* Only used for uses of this in trailing return type. */
1702 tree x_current_class_ptr;
1703 tree x_current_class_ref;
1704
1705 int x_processing_template_decl;
1706 int x_processing_specialization;
1707 int x_processing_constraint;
1708 int suppress_location_wrappers;
1709 BOOL_BITFIELD x_processing_explicit_instantiation : 1;
1710 BOOL_BITFIELD need_pop_function_context : 1;
1711
1712 /* Nonzero if we are parsing the discarded statement of a constexpr
1713 if-statement. */
1714 BOOL_BITFIELD discarded_stmt : 1;
1715
1716 int unevaluated_operand;
1717 int inhibit_evaluation_warnings;
1718 int noexcept_operand;
1719 /* If non-zero, implicit "omp declare target" attribute is added into the
1720 attribute lists. */
1721 int omp_declare_target_attribute;
1722 int ref_temp_count;
1723
1724 struct stmt_tree_s x_stmt_tree;
1725
1726 cp_binding_level *class_bindings;
1727 cp_binding_level *bindings;
1728
1729 hash_map<tree, tree> *GTY((skip)) x_local_specializations;
1730
1731 struct saved_scope *prev;
1732 };
1733
1734 extern GTY(()) struct saved_scope *scope_chain;
1735
1736 /* The current open namespace. */
1737
1738 #define current_namespace scope_chain->old_namespace
1739
1740 /* The stack for namespaces of current declarations. */
1741
1742 #define decl_namespace_list scope_chain->decl_ns_list
1743
1744 /* IDENTIFIER_NODE: name of current class */
1745
1746 #define current_class_name scope_chain->class_name
1747
1748 /* _TYPE: the type of the current class */
1749
1750 #define current_class_type scope_chain->class_type
1751
1752 /* When parsing a class definition, the access specifier most recently
1753 given by the user, or, if no access specifier was given, the
1754 default value appropriate for the kind of class (i.e., struct,
1755 class, or union). */
1756
1757 #define current_access_specifier scope_chain->access_specifier
1758
1759 /* Pointer to the top of the language name stack. */
1760
1761 #define current_lang_base scope_chain->lang_base
1762 #define current_lang_name scope_chain->lang_name
1763
1764 /* When parsing a template declaration, a TREE_LIST represents the
1765 active template parameters. Each node in the list represents one
1766 level of template parameters. The innermost level is first in the
1767 list. The depth of each level is stored as an INTEGER_CST in the
1768 TREE_PURPOSE of each node. The parameters for that level are
1769 stored in the TREE_VALUE. */
1770
1771 #define current_template_parms scope_chain->template_parms
1772
1773 #define processing_template_decl scope_chain->x_processing_template_decl
1774 #define processing_specialization scope_chain->x_processing_specialization
1775 #define processing_explicit_instantiation scope_chain->x_processing_explicit_instantiation
1776
1777 #define in_discarded_stmt scope_chain->discarded_stmt
1778
1779 #define current_ref_temp_count scope_chain->ref_temp_count
1780
1781 /* RAII sentinel to handle clearing processing_template_decl and restoring
1782 it when done. */
1783
1784 class processing_template_decl_sentinel
1785 {
1786 public:
1787 int saved;
1788 processing_template_decl_sentinel (bool reset = true)
saved(processing_template_decl)1789 : saved (processing_template_decl)
1790 {
1791 if (reset)
1792 processing_template_decl = 0;
1793 }
~processing_template_decl_sentinel()1794 ~processing_template_decl_sentinel()
1795 {
1796 processing_template_decl = saved;
1797 }
1798 };
1799
1800 /* RAII sentinel to disable certain warnings during template substitution
1801 and elsewhere. */
1802
1803 class warning_sentinel
1804 {
1805 public:
1806 int &flag;
1807 int val;
1808 warning_sentinel(int& flag, bool suppress=true)
flag(flag)1809 : flag(flag), val(flag) { if (suppress) flag = 0; }
~warning_sentinel()1810 ~warning_sentinel() { flag = val; }
1811 };
1812
1813 /* RAII sentinel to temporarily override input_location. This will not set
1814 input_location to UNKNOWN_LOCATION or BUILTINS_LOCATION. */
1815
1816 class iloc_sentinel
1817 {
1818 location_t saved_loc;
1819 public:
iloc_sentinel(location_t loc)1820 iloc_sentinel (location_t loc): saved_loc (input_location)
1821 {
1822 if (loc >= RESERVED_LOCATION_COUNT)
1823 input_location = loc;
1824 }
~iloc_sentinel()1825 ~iloc_sentinel ()
1826 {
1827 input_location = saved_loc;
1828 }
1829 };
1830
1831 /* RAII sentinel that saves the value of a variable, optionally
1832 overrides it right away, and restores its value when the sentinel
1833 id destructed. */
1834
1835 template <typename T>
1836 class temp_override
1837 {
1838 T& overridden_variable;
1839 T saved_value;
1840 public:
temp_override(T & var)1841 temp_override(T& var) : overridden_variable (var), saved_value (var) {}
temp_override(T & var,T overrider)1842 temp_override(T& var, T overrider)
1843 : overridden_variable (var), saved_value (var)
1844 {
1845 overridden_variable = overrider;
1846 }
~temp_override()1847 ~temp_override() { overridden_variable = saved_value; }
1848 };
1849
1850 /* The cached class binding level, from the most recently exited
1851 class, or NULL if none. */
1852
1853 #define previous_class_level scope_chain->x_previous_class_level
1854
1855 /* A map from local variable declarations in the body of the template
1856 presently being instantiated to the corresponding instantiated
1857 local variables. */
1858
1859 #define local_specializations scope_chain->x_local_specializations
1860
1861 /* Nonzero if we are parsing the operand of a noexcept operator. */
1862
1863 #define cp_noexcept_operand scope_chain->noexcept_operand
1864
1865 /* A list of private types mentioned, for deferred access checking. */
1866
1867 struct GTY((for_user)) cxx_int_tree_map {
1868 unsigned int uid;
1869 tree to;
1870 };
1871
1872 struct cxx_int_tree_map_hasher : ggc_ptr_hash<cxx_int_tree_map>
1873 {
1874 static hashval_t hash (cxx_int_tree_map *);
1875 static bool equal (cxx_int_tree_map *, cxx_int_tree_map *);
1876 };
1877
1878 struct named_label_entry; /* Defined in decl.c. */
1879
1880 struct named_label_hash : ggc_remove <named_label_entry *>
1881 {
1882 typedef named_label_entry *value_type;
1883 typedef tree compare_type; /* An identifier. */
1884
1885 inline static hashval_t hash (value_type);
1886 inline static bool equal (const value_type, compare_type);
1887
1888 static const bool empty_zero_p = true;
mark_emptynamed_label_hash1889 inline static void mark_empty (value_type &p) {p = NULL;}
is_emptynamed_label_hash1890 inline static bool is_empty (value_type p) {return !p;}
1891
1892 /* Nothing is deletable. Everything is insertable. */
is_deletednamed_label_hash1893 inline static bool is_deleted (value_type) { return false; }
mark_deletednamed_label_hash1894 inline static void mark_deleted (value_type) { gcc_unreachable (); }
1895 };
1896
1897 /* Global state pertinent to the current function. */
1898
1899 struct GTY(()) language_function {
1900 struct c_language_function base;
1901
1902 tree x_cdtor_label;
1903 tree x_current_class_ptr;
1904 tree x_current_class_ref;
1905 tree x_eh_spec_block;
1906 tree x_in_charge_parm;
1907 tree x_vtt_parm;
1908 tree x_return_value;
1909
1910 BOOL_BITFIELD returns_value : 1;
1911 BOOL_BITFIELD returns_null : 1;
1912 BOOL_BITFIELD returns_abnormally : 1;
1913 BOOL_BITFIELD infinite_loop: 1;
1914 BOOL_BITFIELD x_in_function_try_handler : 1;
1915 BOOL_BITFIELD x_in_base_initializer : 1;
1916
1917 /* True if this function can throw an exception. */
1918 BOOL_BITFIELD can_throw : 1;
1919
1920 BOOL_BITFIELD invalid_constexpr : 1;
1921 BOOL_BITFIELD throwing_cleanup : 1;
1922
1923 hash_table<named_label_hash> *x_named_labels;
1924
1925 cp_binding_level *bindings;
1926
1927 /* Tracking possibly infinite loops. This is a vec<tree> only because
1928 vec<bool> doesn't work with gtype. */
1929 vec<tree, va_gc> *infinite_loops;
1930 hash_table<cxx_int_tree_map_hasher> *extern_decl_map;
1931 };
1932
1933 /* The current C++-specific per-function global variables. */
1934
1935 #define cp_function_chain (cfun->language)
1936
1937 /* In a constructor destructor, the point at which all derived class
1938 destroying/construction has been done. I.e., just before a
1939 constructor returns, or before any base class destroying will be done
1940 in a destructor. */
1941
1942 #define cdtor_label cp_function_chain->x_cdtor_label
1943
1944 /* When we're processing a member function, current_class_ptr is the
1945 PARM_DECL for the `this' pointer. The current_class_ref is an
1946 expression for `*this'. */
1947
1948 #define current_class_ptr \
1949 (*(cfun && cp_function_chain \
1950 ? &cp_function_chain->x_current_class_ptr \
1951 : &scope_chain->x_current_class_ptr))
1952 #define current_class_ref \
1953 (*(cfun && cp_function_chain \
1954 ? &cp_function_chain->x_current_class_ref \
1955 : &scope_chain->x_current_class_ref))
1956
1957 /* The EH_SPEC_BLOCK for the exception-specifiers for the current
1958 function, if any. */
1959
1960 #define current_eh_spec_block cp_function_chain->x_eh_spec_block
1961
1962 /* The `__in_chrg' parameter for the current function. Only used for
1963 constructors and destructors. */
1964
1965 #define current_in_charge_parm cp_function_chain->x_in_charge_parm
1966
1967 /* The `__vtt_parm' parameter for the current function. Only used for
1968 constructors and destructors. */
1969
1970 #define current_vtt_parm cp_function_chain->x_vtt_parm
1971
1972 /* A boolean flag to control whether we need to clean up the return value if a
1973 local destructor throws. Only used in functions that return by value a
1974 class with a destructor. Which 'tors don't, so we can use the same
1975 field as current_vtt_parm. */
1976
1977 #define current_retval_sentinel current_vtt_parm
1978
1979 /* Set to 0 at beginning of a function definition, set to 1 if
1980 a return statement that specifies a return value is seen. */
1981
1982 #define current_function_returns_value cp_function_chain->returns_value
1983
1984 /* Set to 0 at beginning of a function definition, set to 1 if
1985 a return statement with no argument is seen. */
1986
1987 #define current_function_returns_null cp_function_chain->returns_null
1988
1989 /* Set to 0 at beginning of a function definition, set to 1 if
1990 a call to a noreturn function is seen. */
1991
1992 #define current_function_returns_abnormally \
1993 cp_function_chain->returns_abnormally
1994
1995 /* Set to 0 at beginning of a function definition, set to 1 if we see an
1996 obvious infinite loop. This can have false positives and false
1997 negatives, so it should only be used as a heuristic. */
1998
1999 #define current_function_infinite_loop cp_function_chain->infinite_loop
2000
2001 /* Nonzero if we are processing a base initializer. Zero elsewhere. */
2002 #define in_base_initializer cp_function_chain->x_in_base_initializer
2003
2004 #define in_function_try_handler cp_function_chain->x_in_function_try_handler
2005
2006 /* Expression always returned from function, or error_mark_node
2007 otherwise, for use by the automatic named return value optimization. */
2008
2009 #define current_function_return_value \
2010 (cp_function_chain->x_return_value)
2011
2012 /* In parser.c. */
2013 extern tree cp_literal_operator_id (const char *);
2014
2015 #define NON_ERROR(NODE) ((NODE) == error_mark_node ? NULL_TREE : (NODE))
2016
2017 /* TRUE if a tree code represents a statement. */
2018 extern bool statement_code_p[MAX_TREE_CODES];
2019
2020 #define STATEMENT_CODE_P(CODE) statement_code_p[(int) (CODE)]
2021
2022 enum languages { lang_c, lang_cplusplus };
2023
2024 /* Macros to make error reporting functions' lives easier. */
2025 #define TYPE_LINKAGE_IDENTIFIER(NODE) \
2026 (TYPE_IDENTIFIER (TYPE_MAIN_VARIANT (NODE)))
2027 #define TYPE_NAME_STRING(NODE) (IDENTIFIER_POINTER (TYPE_IDENTIFIER (NODE)))
2028 #define TYPE_NAME_LENGTH(NODE) (IDENTIFIER_LENGTH (TYPE_IDENTIFIER (NODE)))
2029
2030 /* Any kind of anonymous type. */
2031 #define TYPE_ANON_P(NODE) \
2032 (TYPE_LINKAGE_IDENTIFIER (NODE) \
2033 && IDENTIFIER_ANON_P (TYPE_LINKAGE_IDENTIFIER (NODE)))
2034
2035 /* Nonzero if NODE, a TYPE, has no name for linkage purposes. */
2036 #define TYPE_UNNAMED_P(NODE) \
2037 (TYPE_ANON_P (NODE) \
2038 && !IDENTIFIER_LAMBDA_P (TYPE_LINKAGE_IDENTIFIER (NODE)))
2039
2040 /* The _DECL for this _TYPE. */
2041 #define TYPE_MAIN_DECL(NODE) (TYPE_STUB_DECL (TYPE_MAIN_VARIANT (NODE)))
2042
2043 /* Nonzero if T is a type that could resolve to any kind of concrete type
2044 at instantiation time. */
2045 #define WILDCARD_TYPE_P(T) \
2046 (TREE_CODE (T) == TEMPLATE_TYPE_PARM \
2047 || TREE_CODE (T) == TYPENAME_TYPE \
2048 || TREE_CODE (T) == TYPEOF_TYPE \
2049 || TREE_CODE (T) == BOUND_TEMPLATE_TEMPLATE_PARM \
2050 || TREE_CODE (T) == DECLTYPE_TYPE)
2051
2052 /* Nonzero if T is a class (or struct or union) type. Also nonzero
2053 for template type parameters, typename types, and instantiated
2054 template template parameters. Keep these checks in ascending code
2055 order. */
2056 #define MAYBE_CLASS_TYPE_P(T) (WILDCARD_TYPE_P (T) || CLASS_TYPE_P (T))
2057
2058 /* Set CLASS_TYPE_P for T to VAL. T must be a class, struct, or
2059 union type. */
2060 #define SET_CLASS_TYPE_P(T, VAL) \
2061 (TYPE_LANG_FLAG_5 (RECORD_OR_UNION_CHECK (T)) = (VAL))
2062
2063 /* Nonzero if T is a class type. Zero for template type parameters,
2064 typename types, and so forth. */
2065 #define CLASS_TYPE_P(T) \
2066 (RECORD_OR_UNION_CODE_P (TREE_CODE (T)) && TYPE_LANG_FLAG_5 (T))
2067
2068 /* Nonzero if T is a class type but not an union. */
2069 #define NON_UNION_CLASS_TYPE_P(T) \
2070 (TREE_CODE (T) == RECORD_TYPE && TYPE_LANG_FLAG_5 (T))
2071
2072 /* Keep these checks in ascending code order. */
2073 #define RECORD_OR_UNION_CODE_P(T) \
2074 ((T) == RECORD_TYPE || (T) == UNION_TYPE)
2075 #define OVERLOAD_TYPE_P(T) \
2076 (CLASS_TYPE_P (T) || TREE_CODE (T) == ENUMERAL_TYPE)
2077
2078 /* True if this type is dependent. This predicate is only valid if
2079 TYPE_DEPENDENT_P_VALID is true. */
2080 #define TYPE_DEPENDENT_P(NODE) TYPE_LANG_FLAG_0 (NODE)
2081
2082 /* True if dependent_type_p has been called for this type, with the
2083 result that TYPE_DEPENDENT_P is valid. */
2084 #define TYPE_DEPENDENT_P_VALID(NODE) TYPE_LANG_FLAG_6(NODE)
2085
2086 /* Nonzero if this type is const-qualified. */
2087 #define CP_TYPE_CONST_P(NODE) \
2088 ((cp_type_quals (NODE) & TYPE_QUAL_CONST) != 0)
2089
2090 /* Nonzero if this type is volatile-qualified. */
2091 #define CP_TYPE_VOLATILE_P(NODE) \
2092 ((cp_type_quals (NODE) & TYPE_QUAL_VOLATILE) != 0)
2093
2094 /* Nonzero if this type is restrict-qualified. */
2095 #define CP_TYPE_RESTRICT_P(NODE) \
2096 ((cp_type_quals (NODE) & TYPE_QUAL_RESTRICT) != 0)
2097
2098 /* Nonzero if this type is const-qualified, but not
2099 volatile-qualified. Other qualifiers are ignored. This macro is
2100 used to test whether or not it is OK to bind an rvalue to a
2101 reference. */
2102 #define CP_TYPE_CONST_NON_VOLATILE_P(NODE) \
2103 ((cp_type_quals (NODE) & (TYPE_QUAL_CONST | TYPE_QUAL_VOLATILE)) \
2104 == TYPE_QUAL_CONST)
2105
2106 #define FUNCTION_ARG_CHAIN(NODE) \
2107 TREE_CHAIN (TYPE_ARG_TYPES (TREE_TYPE (NODE)))
2108
2109 /* Given a FUNCTION_DECL, returns the first TREE_LIST out of TYPE_ARG_TYPES
2110 which refers to a user-written parameter. */
2111 #define FUNCTION_FIRST_USER_PARMTYPE(NODE) \
2112 skip_artificial_parms_for ((NODE), TYPE_ARG_TYPES (TREE_TYPE (NODE)))
2113
2114 /* Similarly, but for DECL_ARGUMENTS. */
2115 #define FUNCTION_FIRST_USER_PARM(NODE) \
2116 skip_artificial_parms_for ((NODE), DECL_ARGUMENTS (NODE))
2117
2118 /* Nonzero iff TYPE is derived from PARENT. Ignores accessibility and
2119 ambiguity issues. */
2120 #define DERIVED_FROM_P(PARENT, TYPE) \
2121 (lookup_base ((TYPE), (PARENT), ba_any, NULL, tf_none) != NULL_TREE)
2122
2123 /* Gives the visibility specification for a class type. */
2124 #define CLASSTYPE_VISIBILITY(TYPE) \
2125 DECL_VISIBILITY (TYPE_MAIN_DECL (TYPE))
2126 #define CLASSTYPE_VISIBILITY_SPECIFIED(TYPE) \
2127 DECL_VISIBILITY_SPECIFIED (TYPE_MAIN_DECL (TYPE))
2128
2129 struct GTY (()) tree_pair_s {
2130 tree purpose;
2131 tree value;
2132 };
2133 typedef tree_pair_s *tree_pair_p;
2134
2135 /* This structure provides additional information above and beyond
2136 what is provide in the ordinary tree_type. In the past, we used it
2137 for the types of class types, template parameters types, typename
2138 types, and so forth. However, there can be many (tens to hundreds
2139 of thousands) of template parameter types in a compilation, and
2140 there's no need for this additional information in that case.
2141 Therefore, we now use this data structure only for class types.
2142
2143 In the past, it was thought that there would be relatively few
2144 class types. However, in the presence of heavy use of templates,
2145 many (i.e., thousands) of classes can easily be generated.
2146 Therefore, we should endeavor to keep the size of this structure to
2147 a minimum. */
2148 struct GTY(()) lang_type {
2149 unsigned char align;
2150
2151 unsigned has_type_conversion : 1;
2152 unsigned has_copy_ctor : 1;
2153 unsigned has_default_ctor : 1;
2154 unsigned const_needs_init : 1;
2155 unsigned ref_needs_init : 1;
2156 unsigned has_const_copy_assign : 1;
2157 unsigned use_template : 2;
2158
2159 unsigned has_mutable : 1;
2160 unsigned com_interface : 1;
2161 unsigned non_pod_class : 1;
2162 unsigned nearly_empty_p : 1;
2163 unsigned user_align : 1;
2164 unsigned has_copy_assign : 1;
2165 unsigned has_new : 1;
2166 unsigned has_array_new : 1;
2167
2168 unsigned gets_delete : 2;
2169 unsigned interface_only : 1;
2170 unsigned interface_unknown : 1;
2171 unsigned contains_empty_class_p : 1;
2172 unsigned anon_aggr : 1;
2173 unsigned non_zero_init : 1;
2174 unsigned empty_p : 1;
2175 /* 32 bits allocated. */
2176
2177 unsigned vec_new_uses_cookie : 1;
2178 unsigned declared_class : 1;
2179 unsigned diamond_shaped : 1;
2180 unsigned repeated_base : 1;
2181 unsigned being_defined : 1;
2182 unsigned debug_requested : 1;
2183 unsigned fields_readonly : 1;
2184 unsigned ptrmemfunc_flag : 1;
2185
2186 unsigned lazy_default_ctor : 1;
2187 unsigned lazy_copy_ctor : 1;
2188 unsigned lazy_copy_assign : 1;
2189 unsigned lazy_destructor : 1;
2190 unsigned has_const_copy_ctor : 1;
2191 unsigned has_complex_copy_ctor : 1;
2192 unsigned has_complex_copy_assign : 1;
2193 unsigned non_aggregate : 1;
2194
2195 unsigned has_complex_dflt : 1;
2196 unsigned has_list_ctor : 1;
2197 unsigned non_std_layout : 1;
2198 unsigned is_literal : 1;
2199 unsigned lazy_move_ctor : 1;
2200 unsigned lazy_move_assign : 1;
2201 unsigned has_complex_move_ctor : 1;
2202 unsigned has_complex_move_assign : 1;
2203
2204 unsigned has_constexpr_ctor : 1;
2205 unsigned unique_obj_representations : 1;
2206 unsigned unique_obj_representations_set : 1;
2207
2208 /* When adding a flag here, consider whether or not it ought to
2209 apply to a template instance if it applies to the template. If
2210 so, make sure to copy it in instantiate_class_template! */
2211
2212 /* There are some bits left to fill out a 32-bit word. Keep track
2213 of this by updating the size of this bitfield whenever you add or
2214 remove a flag. */
2215 unsigned dummy : 5;
2216
2217 tree primary_base;
2218 vec<tree_pair_s, va_gc> *vcall_indices;
2219 tree vtables;
2220 tree typeinfo_var;
2221 vec<tree, va_gc> *vbases;
2222 binding_table nested_udts;
2223 tree as_base;
2224 vec<tree, va_gc> *pure_virtuals;
2225 tree friend_classes;
2226 vec<tree, va_gc> * GTY((reorder ("resort_type_member_vec"))) members;
2227 tree key_method;
2228 tree decl_list;
2229 tree befriending_classes;
2230 /* In a RECORD_TYPE, information specific to Objective-C++, such
2231 as a list of adopted protocols or a pointer to a corresponding
2232 @interface. See objc/objc-act.h for details. */
2233 tree objc_info;
2234 /* FIXME reuse another field? */
2235 tree lambda_expr;
2236 };
2237
2238 /* We used to have a variant type for lang_type. Keep the name of the
2239 checking accessor for the sole survivor. */
2240 #define LANG_TYPE_CLASS_CHECK(NODE) (TYPE_LANG_SPECIFIC (NODE))
2241
2242 /* Nonzero for _CLASSTYPE means that operator delete is defined. */
2243 #define TYPE_GETS_DELETE(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->gets_delete)
2244 #define TYPE_GETS_REG_DELETE(NODE) (TYPE_GETS_DELETE (NODE) & 1)
2245
2246 /* Nonzero if `new NODE[x]' should cause the allocation of extra
2247 storage to indicate how many array elements are in use. */
2248 #define TYPE_VEC_NEW_USES_COOKIE(NODE) \
2249 (CLASS_TYPE_P (NODE) \
2250 && LANG_TYPE_CLASS_CHECK (NODE)->vec_new_uses_cookie)
2251
2252 /* Nonzero means that this _CLASSTYPE node defines ways of converting
2253 itself to other types. */
2254 #define TYPE_HAS_CONVERSION(NODE) \
2255 (LANG_TYPE_CLASS_CHECK (NODE)->has_type_conversion)
2256
2257 /* Nonzero means that NODE (a class type) has a default constructor --
2258 but that it has not yet been declared. */
2259 #define CLASSTYPE_LAZY_DEFAULT_CTOR(NODE) \
2260 (LANG_TYPE_CLASS_CHECK (NODE)->lazy_default_ctor)
2261
2262 /* Nonzero means that NODE (a class type) has a copy constructor --
2263 but that it has not yet been declared. */
2264 #define CLASSTYPE_LAZY_COPY_CTOR(NODE) \
2265 (LANG_TYPE_CLASS_CHECK (NODE)->lazy_copy_ctor)
2266
2267 /* Nonzero means that NODE (a class type) has a move constructor --
2268 but that it has not yet been declared. */
2269 #define CLASSTYPE_LAZY_MOVE_CTOR(NODE) \
2270 (LANG_TYPE_CLASS_CHECK (NODE)->lazy_move_ctor)
2271
2272 /* Nonzero means that NODE (a class type) has an assignment operator
2273 -- but that it has not yet been declared. */
2274 #define CLASSTYPE_LAZY_COPY_ASSIGN(NODE) \
2275 (LANG_TYPE_CLASS_CHECK (NODE)->lazy_copy_assign)
2276
2277 /* Nonzero means that NODE (a class type) has an assignment operator
2278 -- but that it has not yet been declared. */
2279 #define CLASSTYPE_LAZY_MOVE_ASSIGN(NODE) \
2280 (LANG_TYPE_CLASS_CHECK (NODE)->lazy_move_assign)
2281
2282 /* Nonzero means that NODE (a class type) has a destructor -- but that
2283 it has not yet been declared. */
2284 #define CLASSTYPE_LAZY_DESTRUCTOR(NODE) \
2285 (LANG_TYPE_CLASS_CHECK (NODE)->lazy_destructor)
2286
2287 /* Nonzero means that NODE (a class type) is final */
2288 #define CLASSTYPE_FINAL(NODE) \
2289 TYPE_FINAL_P (NODE)
2290
2291
2292 /* Nonzero means that this _CLASSTYPE node overloads operator=(X&). */
2293 #define TYPE_HAS_COPY_ASSIGN(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->has_copy_assign)
2294
2295 /* True iff the class type NODE has an "operator =" whose parameter
2296 has a parameter of type "const X&". */
2297 #define TYPE_HAS_CONST_COPY_ASSIGN(NODE) \
2298 (LANG_TYPE_CLASS_CHECK (NODE)->has_const_copy_assign)
2299
2300 /* Nonzero means that this _CLASSTYPE node has an X(X&) constructor. */
2301 #define TYPE_HAS_COPY_CTOR(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->has_copy_ctor)
2302 #define TYPE_HAS_CONST_COPY_CTOR(NODE) \
2303 (LANG_TYPE_CLASS_CHECK (NODE)->has_const_copy_ctor)
2304
2305 /* Nonzero if this class has an X(initializer_list<T>) constructor. */
2306 #define TYPE_HAS_LIST_CTOR(NODE) \
2307 (LANG_TYPE_CLASS_CHECK (NODE)->has_list_ctor)
2308
2309 /* Nonzero if this class has a constexpr constructor other than a copy/move
2310 constructor. Note that a class can have constexpr constructors for
2311 static initialization even if it isn't a literal class. */
2312 #define TYPE_HAS_CONSTEXPR_CTOR(NODE) \
2313 (LANG_TYPE_CLASS_CHECK (NODE)->has_constexpr_ctor)
2314
2315 /* Nonzero if this class defines an overloaded operator new. (An
2316 operator new [] doesn't count.) */
2317 #define TYPE_HAS_NEW_OPERATOR(NODE) \
2318 (LANG_TYPE_CLASS_CHECK (NODE)->has_new)
2319
2320 /* Nonzero if this class defines an overloaded operator new[]. */
2321 #define TYPE_HAS_ARRAY_NEW_OPERATOR(NODE) \
2322 (LANG_TYPE_CLASS_CHECK (NODE)->has_array_new)
2323
2324 /* Nonzero means that this type is being defined. I.e., the left brace
2325 starting the definition of this type has been seen. */
2326 #define TYPE_BEING_DEFINED(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->being_defined)
2327
2328 /* Nonzero means that this type is either complete or being defined, so we
2329 can do lookup in it. */
2330 #define COMPLETE_OR_OPEN_TYPE_P(NODE) \
2331 (COMPLETE_TYPE_P (NODE) || (CLASS_TYPE_P (NODE) && TYPE_BEING_DEFINED (NODE)))
2332
2333 /* Mark bits for repeated base checks. */
2334 #define TYPE_MARKED_P(NODE) TREE_LANG_FLAG_6 (TYPE_CHECK (NODE))
2335
2336 /* Nonzero if the class NODE has multiple paths to the same (virtual)
2337 base object. */
2338 #define CLASSTYPE_DIAMOND_SHAPED_P(NODE) \
2339 (LANG_TYPE_CLASS_CHECK(NODE)->diamond_shaped)
2340
2341 /* Nonzero if the class NODE has multiple instances of the same base
2342 type. */
2343 #define CLASSTYPE_REPEATED_BASE_P(NODE) \
2344 (LANG_TYPE_CLASS_CHECK(NODE)->repeated_base)
2345
2346 /* The member function with which the vtable will be emitted:
2347 the first noninline non-pure-virtual member function. NULL_TREE
2348 if there is no key function or if this is a class template */
2349 #define CLASSTYPE_KEY_METHOD(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->key_method)
2350
2351 /* Vector of members. During definition, it is unordered and only
2352 member functions are present. After completion it is sorted and
2353 contains both member functions and non-functions. STAT_HACK is
2354 involved to preserve oneslot per name invariant. */
2355 #define CLASSTYPE_MEMBER_VEC(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->members)
2356
2357 /* For class templates, this is a TREE_LIST of all member data,
2358 functions, types, and friends in the order of declaration.
2359 The TREE_PURPOSE of each TREE_LIST is NULL_TREE for a friend,
2360 and the RECORD_TYPE for the class template otherwise. */
2361 #define CLASSTYPE_DECL_LIST(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->decl_list)
2362
2363 /* A FUNCTION_DECL or OVERLOAD for the constructors for NODE. These
2364 are the constructors that take an in-charge parameter. */
2365 #define CLASSTYPE_CONSTRUCTORS(NODE) \
2366 (get_class_binding_direct (NODE, ctor_identifier))
2367
2368 /* A FUNCTION_DECL for the destructor for NODE. This is the
2369 destructors that take an in-charge parameter. If
2370 CLASSTYPE_LAZY_DESTRUCTOR is true, then this entry will be NULL
2371 until the destructor is created with lazily_declare_fn. */
2372 #define CLASSTYPE_DESTRUCTOR(NODE) \
2373 (get_class_binding_direct (NODE, dtor_identifier))
2374
2375 /* A dictionary of the nested user-defined-types (class-types, or enums)
2376 found within this class. This table includes nested member class
2377 templates. */
2378 #define CLASSTYPE_NESTED_UTDS(NODE) \
2379 (LANG_TYPE_CLASS_CHECK (NODE)->nested_udts)
2380
2381 /* Nonzero if NODE has a primary base class, i.e., a base class with
2382 which it shares the virtual function table pointer. */
2383 #define CLASSTYPE_HAS_PRIMARY_BASE_P(NODE) \
2384 (CLASSTYPE_PRIMARY_BINFO (NODE) != NULL_TREE)
2385
2386 /* If non-NULL, this is the binfo for the primary base class, i.e.,
2387 the base class which contains the virtual function table pointer
2388 for this class. */
2389 #define CLASSTYPE_PRIMARY_BINFO(NODE) \
2390 (LANG_TYPE_CLASS_CHECK (NODE)->primary_base)
2391
2392 /* A vector of BINFOs for the direct and indirect virtual base classes
2393 that this type uses in a post-order depth-first left-to-right
2394 order. (In other words, these bases appear in the order that they
2395 should be initialized.) */
2396 #define CLASSTYPE_VBASECLASSES(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->vbases)
2397
2398 /* The type corresponding to NODE when NODE is used as a base class,
2399 i.e., NODE without virtual base classes or tail padding. */
2400 #define CLASSTYPE_AS_BASE(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->as_base)
2401
2402 /* True iff NODE is the CLASSTYPE_AS_BASE version of some type. */
2403 #define IS_FAKE_BASE_TYPE(NODE) \
2404 (TREE_CODE (NODE) == RECORD_TYPE \
2405 && TYPE_CONTEXT (NODE) && CLASS_TYPE_P (TYPE_CONTEXT (NODE)) \
2406 && CLASSTYPE_AS_BASE (TYPE_CONTEXT (NODE)) == (NODE))
2407
2408 /* These are the size and alignment of the type without its virtual
2409 base classes, for when we use this type as a base itself. */
2410 #define CLASSTYPE_SIZE(NODE) TYPE_SIZE (CLASSTYPE_AS_BASE (NODE))
2411 #define CLASSTYPE_SIZE_UNIT(NODE) TYPE_SIZE_UNIT (CLASSTYPE_AS_BASE (NODE))
2412 #define CLASSTYPE_ALIGN(NODE) TYPE_ALIGN (CLASSTYPE_AS_BASE (NODE))
2413 #define CLASSTYPE_USER_ALIGN(NODE) TYPE_USER_ALIGN (CLASSTYPE_AS_BASE (NODE))
2414
2415 /* The alignment of NODE, without its virtual bases, in bytes. */
2416 #define CLASSTYPE_ALIGN_UNIT(NODE) \
2417 (CLASSTYPE_ALIGN (NODE) / BITS_PER_UNIT)
2418
2419 /* A vec<tree> of virtual functions which cannot be inherited by
2420 derived classes. When deriving from this type, the derived
2421 class must provide its own definition for each of these functions. */
2422 #define CLASSTYPE_PURE_VIRTUALS(NODE) \
2423 (LANG_TYPE_CLASS_CHECK (NODE)->pure_virtuals)
2424
2425 /* Nonzero means that this type is an abstract class type. */
2426 #define ABSTRACT_CLASS_TYPE_P(NODE) \
2427 (CLASS_TYPE_P (NODE) && CLASSTYPE_PURE_VIRTUALS(NODE))
2428
2429 /* Nonzero means that this type has an X() constructor. */
2430 #define TYPE_HAS_DEFAULT_CONSTRUCTOR(NODE) \
2431 (LANG_TYPE_CLASS_CHECK (NODE)->has_default_ctor)
2432
2433 /* Nonzero means that this type contains a mutable member. */
2434 #define CLASSTYPE_HAS_MUTABLE(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->has_mutable)
2435 #define TYPE_HAS_MUTABLE_P(NODE) (cp_has_mutable_p (NODE))
2436
2437 /* Nonzero means that this class type is not POD for the purpose of layout
2438 (as defined in the ABI). This is different from the language's POD. */
2439 #define CLASSTYPE_NON_LAYOUT_POD_P(NODE) \
2440 (LANG_TYPE_CLASS_CHECK (NODE)->non_pod_class)
2441
2442 /* Nonzero means that this class type is a non-standard-layout class. */
2443 #define CLASSTYPE_NON_STD_LAYOUT(NODE) \
2444 (LANG_TYPE_CLASS_CHECK (NODE)->non_std_layout)
2445
2446 /* Nonzero means that this class type does have unique object
2447 representations. */
2448 #define CLASSTYPE_UNIQUE_OBJ_REPRESENTATIONS(NODE) \
2449 (LANG_TYPE_CLASS_CHECK (NODE)->unique_obj_representations)
2450
2451 /* Nonzero means that this class type has
2452 CLASSTYPE_UNIQUE_OBJ_REPRESENTATIONS computed. */
2453 #define CLASSTYPE_UNIQUE_OBJ_REPRESENTATIONS_SET(NODE) \
2454 (LANG_TYPE_CLASS_CHECK (NODE)->unique_obj_representations_set)
2455
2456 /* Nonzero means that this class contains pod types whose default
2457 initialization is not a zero initialization (namely, pointers to
2458 data members). */
2459 #define CLASSTYPE_NON_ZERO_INIT_P(NODE) \
2460 (LANG_TYPE_CLASS_CHECK (NODE)->non_zero_init)
2461
2462 /* Nonzero if this class is "empty" in the sense of the C++ ABI. */
2463 #define CLASSTYPE_EMPTY_P(NODE) \
2464 (LANG_TYPE_CLASS_CHECK (NODE)->empty_p)
2465
2466 /* Nonzero if this class is "nearly empty", i.e., contains only a
2467 virtual function table pointer. */
2468 #define CLASSTYPE_NEARLY_EMPTY_P(NODE) \
2469 (LANG_TYPE_CLASS_CHECK (NODE)->nearly_empty_p)
2470
2471 /* Nonzero if this class contains an empty subobject. */
2472 #define CLASSTYPE_CONTAINS_EMPTY_CLASS_P(NODE) \
2473 (LANG_TYPE_CLASS_CHECK (NODE)->contains_empty_class_p)
2474
2475 /* A list of class types of which this type is a friend. The
2476 TREE_VALUE is normally a TYPE, but will be a TEMPLATE_DECL in the
2477 case of a template friend. */
2478 #define CLASSTYPE_FRIEND_CLASSES(NODE) \
2479 (LANG_TYPE_CLASS_CHECK (NODE)->friend_classes)
2480
2481 /* A list of the classes which grant friendship to this class. */
2482 #define CLASSTYPE_BEFRIENDING_CLASSES(NODE) \
2483 (LANG_TYPE_CLASS_CHECK (NODE)->befriending_classes)
2484
2485 /* The associated LAMBDA_EXPR that made this class. */
2486 #define CLASSTYPE_LAMBDA_EXPR(NODE) \
2487 (LANG_TYPE_CLASS_CHECK (NODE)->lambda_expr)
2488 /* The extra mangling scope for this closure type. */
2489 #define LAMBDA_TYPE_EXTRA_SCOPE(NODE) \
2490 (LAMBDA_EXPR_EXTRA_SCOPE (CLASSTYPE_LAMBDA_EXPR (NODE)))
2491
2492 /* Say whether this node was declared as a "class" or a "struct". */
2493 #define CLASSTYPE_DECLARED_CLASS(NODE) \
2494 (LANG_TYPE_CLASS_CHECK (NODE)->declared_class)
2495
2496 /* Nonzero if this class has const members
2497 which have no specified initialization. */
2498 #define CLASSTYPE_READONLY_FIELDS_NEED_INIT(NODE) \
2499 (TYPE_LANG_SPECIFIC (NODE) \
2500 ? LANG_TYPE_CLASS_CHECK (NODE)->const_needs_init : 0)
2501 #define SET_CLASSTYPE_READONLY_FIELDS_NEED_INIT(NODE, VALUE) \
2502 (LANG_TYPE_CLASS_CHECK (NODE)->const_needs_init = (VALUE))
2503
2504 /* Nonzero if this class has ref members
2505 which have no specified initialization. */
2506 #define CLASSTYPE_REF_FIELDS_NEED_INIT(NODE) \
2507 (TYPE_LANG_SPECIFIC (NODE) \
2508 ? LANG_TYPE_CLASS_CHECK (NODE)->ref_needs_init : 0)
2509 #define SET_CLASSTYPE_REF_FIELDS_NEED_INIT(NODE, VALUE) \
2510 (LANG_TYPE_CLASS_CHECK (NODE)->ref_needs_init = (VALUE))
2511
2512 /* Nonzero if this class is included from a header file which employs
2513 `#pragma interface', and it is not included in its implementation file. */
2514 #define CLASSTYPE_INTERFACE_ONLY(NODE) \
2515 (LANG_TYPE_CLASS_CHECK (NODE)->interface_only)
2516
2517 /* True if we have already determined whether or not vtables, VTTs,
2518 typeinfo, and other similar per-class data should be emitted in
2519 this translation unit. This flag does not indicate whether or not
2520 these items should be emitted; it only indicates that we know one
2521 way or the other. */
2522 #define CLASSTYPE_INTERFACE_KNOWN(NODE) \
2523 (LANG_TYPE_CLASS_CHECK (NODE)->interface_unknown == 0)
2524 /* The opposite of CLASSTYPE_INTERFACE_KNOWN. */
2525 #define CLASSTYPE_INTERFACE_UNKNOWN(NODE) \
2526 (LANG_TYPE_CLASS_CHECK (NODE)->interface_unknown)
2527
2528 #define SET_CLASSTYPE_INTERFACE_UNKNOWN_X(NODE,X) \
2529 (LANG_TYPE_CLASS_CHECK (NODE)->interface_unknown = !!(X))
2530 #define SET_CLASSTYPE_INTERFACE_UNKNOWN(NODE) \
2531 (LANG_TYPE_CLASS_CHECK (NODE)->interface_unknown = 1)
2532 #define SET_CLASSTYPE_INTERFACE_KNOWN(NODE) \
2533 (LANG_TYPE_CLASS_CHECK (NODE)->interface_unknown = 0)
2534
2535 /* Nonzero if a _DECL node requires us to output debug info for this class. */
2536 #define CLASSTYPE_DEBUG_REQUESTED(NODE) \
2537 (LANG_TYPE_CLASS_CHECK (NODE)->debug_requested)
2538
2539 /* Additional macros for inheritance information. */
2540
2541 /* Nonzero means that this class is on a path leading to a new vtable. */
2542 #define BINFO_VTABLE_PATH_MARKED(NODE) BINFO_FLAG_1 (NODE)
2543
2544 /* Nonzero means B (a BINFO) has its own vtable. Any copies will not
2545 have this flag set. */
2546 #define BINFO_NEW_VTABLE_MARKED(B) (BINFO_FLAG_2 (B))
2547
2548 /* Compare a BINFO_TYPE with another type for equality. For a binfo,
2549 this is functionally equivalent to using same_type_p, but
2550 measurably faster. At least one of the arguments must be a
2551 BINFO_TYPE. The other can be a BINFO_TYPE or a regular type. If
2552 BINFO_TYPE(T) ever stops being the main variant of the class the
2553 binfo is for, this macro must change. */
2554 #define SAME_BINFO_TYPE_P(A, B) ((A) == (B))
2555
2556 /* Any subobject that needs a new vtable must have a vptr and must not
2557 be a non-virtual primary base (since it would then use the vtable from a
2558 derived class and never become non-primary.) */
2559 #define SET_BINFO_NEW_VTABLE_MARKED(B) \
2560 (BINFO_NEW_VTABLE_MARKED (B) = 1, \
2561 gcc_assert (!BINFO_PRIMARY_P (B) || BINFO_VIRTUAL_P (B)), \
2562 gcc_assert (TYPE_VFIELD (BINFO_TYPE (B))))
2563
2564 /* Nonzero if this binfo is for a dependent base - one that should not
2565 be searched. */
2566 #define BINFO_DEPENDENT_BASE_P(NODE) BINFO_FLAG_3 (NODE)
2567
2568 /* Nonzero if this binfo has lost its primary base binfo (because that
2569 is a nearly-empty virtual base that has been taken by some other
2570 base in the complete hierarchy. */
2571 #define BINFO_LOST_PRIMARY_P(NODE) BINFO_FLAG_4 (NODE)
2572
2573 /* Nonzero if this BINFO is a primary base class. */
2574 #define BINFO_PRIMARY_P(NODE) BINFO_FLAG_5(NODE)
2575
2576 /* A vec<tree_pair_s> of the vcall indices associated with the class
2577 NODE. The PURPOSE of each element is a FUNCTION_DECL for a virtual
2578 function. The VALUE is the index into the virtual table where the
2579 vcall offset for that function is stored, when NODE is a virtual
2580 base. */
2581 #define CLASSTYPE_VCALL_INDICES(NODE) \
2582 (LANG_TYPE_CLASS_CHECK (NODE)->vcall_indices)
2583
2584 /* The various vtables for the class NODE. The primary vtable will be
2585 first, followed by the construction vtables and VTT, if any. */
2586 #define CLASSTYPE_VTABLES(NODE) \
2587 (LANG_TYPE_CLASS_CHECK (NODE)->vtables)
2588
2589 /* The std::type_info variable representing this class, or NULL if no
2590 such variable has been created. This field is only set for the
2591 TYPE_MAIN_VARIANT of the class. */
2592 #define CLASSTYPE_TYPEINFO_VAR(NODE) \
2593 (LANG_TYPE_CLASS_CHECK (NODE)->typeinfo_var)
2594
2595 /* Accessor macros for the BINFO_VIRTUALS list. */
2596
2597 /* The number of bytes by which to adjust the `this' pointer when
2598 calling this virtual function. Subtract this value from the this
2599 pointer. Always non-NULL, might be constant zero though. */
2600 #define BV_DELTA(NODE) (TREE_PURPOSE (NODE))
2601
2602 /* If non-NULL, the vtable index at which to find the vcall offset
2603 when calling this virtual function. Add the value at that vtable
2604 index to the this pointer. */
2605 #define BV_VCALL_INDEX(NODE) (TREE_TYPE (NODE))
2606
2607 /* The function to call. */
2608 #define BV_FN(NODE) (TREE_VALUE (NODE))
2609
2610 /* Whether or not this entry is for a lost primary virtual base. */
2611 #define BV_LOST_PRIMARY(NODE) (TREE_LANG_FLAG_0 (NODE))
2612
2613 /* For FUNCTION_TYPE or METHOD_TYPE, a list of the exceptions that
2614 this type can raise. Each TREE_VALUE is a _TYPE. The TREE_VALUE
2615 will be NULL_TREE to indicate a throw specification of `()', or
2616 no exceptions allowed. For a noexcept specification, TREE_VALUE
2617 is NULL_TREE and TREE_PURPOSE is the constant-expression. For
2618 a deferred noexcept-specification, TREE_PURPOSE is a DEFERRED_NOEXCEPT
2619 (for templates) or an OVERLOAD list of functions (for implicitly
2620 declared functions). */
2621 #define TYPE_RAISES_EXCEPTIONS(NODE) \
2622 TYPE_LANG_SLOT_1 (FUNC_OR_METHOD_CHECK (NODE))
2623
2624 /* For FUNCTION_TYPE or METHOD_TYPE, return 1 iff it is declared `throw()'
2625 or noexcept(true). */
2626 #define TYPE_NOTHROW_P(NODE) nothrow_spec_p (TYPE_RAISES_EXCEPTIONS (NODE))
2627
2628 /* For FUNCTION_TYPE or METHOD_TYPE, true if NODE is noexcept. This is the
2629 case for things declared noexcept(true) and, with -fnothrow-opt, for
2630 throw() functions. */
2631 #define TYPE_NOEXCEPT_P(NODE) type_noexcept_p (NODE)
2632
2633 /* The binding level associated with the namespace. */
2634 #define NAMESPACE_LEVEL(NODE) \
2635 (LANG_DECL_NS_CHECK (NODE)->level)
2636
2637 /* Discriminator values for lang_decl. */
2638
2639 enum lang_decl_selector
2640 {
2641 lds_min,
2642 lds_fn,
2643 lds_ns,
2644 lds_parm,
2645 lds_decomp
2646 };
2647
2648 /* Flags shared by all forms of DECL_LANG_SPECIFIC.
2649
2650 Some of the flags live here only to make lang_decl_min/fn smaller. Do
2651 not make this struct larger than 32 bits; instead, make sel smaller. */
2652
2653 struct GTY(()) lang_decl_base {
2654 /* Larger than necessary for faster access. */
2655 ENUM_BITFIELD(lang_decl_selector) selector : 16;
2656 ENUM_BITFIELD(languages) language : 1;
2657 unsigned use_template : 2;
2658 unsigned not_really_extern : 1; /* var or fn */
2659 unsigned initialized_in_class : 1; /* var or fn */
2660 unsigned threadprivate_or_deleted_p : 1; /* var or fn */
2661 unsigned anticipated_p : 1; /* fn, type or template */
2662 /* anticipated_p reused as DECL_OMP_PRIVATIZED_MEMBER in var */
2663 unsigned friend_or_tls : 1; /* var, fn, type or template */
2664 unsigned unknown_bound_p : 1; /* var */
2665 unsigned odr_used : 1; /* var or fn */
2666 unsigned spare : 1;
2667 unsigned concept_p : 1; /* applies to vars and functions */
2668 unsigned var_declared_inline_p : 1; /* var */
2669 unsigned dependent_init_p : 1; /* var */
2670 /* 2 spare bits */
2671 };
2672
2673 /* True for DECL codes which have template info and access. */
2674 #define LANG_DECL_HAS_MIN(NODE) \
2675 (VAR_OR_FUNCTION_DECL_P (NODE) \
2676 || TREE_CODE (NODE) == FIELD_DECL \
2677 || TREE_CODE (NODE) == CONST_DECL \
2678 || TREE_CODE (NODE) == TYPE_DECL \
2679 || TREE_CODE (NODE) == TEMPLATE_DECL \
2680 || TREE_CODE (NODE) == USING_DECL \
2681 || TREE_CODE (NODE) == CONCEPT_DECL)
2682
2683 /* DECL_LANG_SPECIFIC for the above codes. */
2684
2685 struct GTY(()) lang_decl_min {
2686 struct lang_decl_base base;
2687
2688 /* In a FUNCTION_DECL for which DECL_THUNK_P holds, this is
2689 THUNK_ALIAS.
2690 In a FUNCTION_DECL for which DECL_THUNK_P does not hold,
2691 VAR_DECL, TYPE_DECL, or TEMPLATE_DECL, this is
2692 DECL_TEMPLATE_INFO. */
2693 tree template_info;
2694
2695 /* In a DECL_THUNK_P FUNCTION_DECL, this is THUNK_VIRTUAL_OFFSET.
2696 In a lambda-capture proxy VAR_DECL, this is DECL_CAPTURED_VARIABLE.
2697 In a function-scope TREE_STATIC VAR_DECL or IMPLICIT_TYPEDEF_P TYPE_DECL,
2698 this is DECL_DISCRIMINATOR.
2699 Otherwise, in a class-scope DECL, this is DECL_ACCESS. */
2700 tree access;
2701 };
2702
2703 /* Additional DECL_LANG_SPECIFIC information for functions. */
2704
2705 struct GTY(()) lang_decl_fn {
2706 struct lang_decl_min min;
2707
2708 /* In a overloaded operator, this is the compressed operator code. */
2709 unsigned ovl_op_code : 6;
2710 unsigned global_ctor_p : 1;
2711 unsigned global_dtor_p : 1;
2712
2713 unsigned static_function : 1;
2714 unsigned pure_virtual : 1;
2715 unsigned defaulted_p : 1;
2716 unsigned has_in_charge_parm_p : 1;
2717 unsigned has_vtt_parm_p : 1;
2718 unsigned pending_inline_p : 1;
2719 unsigned nonconverting : 1;
2720 unsigned thunk_p : 1;
2721
2722 unsigned this_thunk_p : 1;
2723 unsigned hidden_friend_p : 1;
2724 unsigned omp_declare_reduction_p : 1;
2725 unsigned has_dependent_explicit_spec_p : 1;
2726 unsigned immediate_fn_p : 1;
2727 unsigned maybe_deleted : 1;
2728 unsigned coroutine_p : 1;
2729
2730 unsigned spare : 9;
2731
2732 /* 32-bits padding on 64-bit host. */
2733
2734 /* For a non-thunk function decl, this is a tree list of
2735 friendly classes. For a thunk function decl, it is the
2736 thunked to function decl. */
2737 tree befriending_classes;
2738
2739 /* For a non-virtual FUNCTION_DECL, this is
2740 DECL_FRIEND_CONTEXT. For a virtual FUNCTION_DECL for which
2741 DECL_THIS_THUNK_P does not hold, this is DECL_THUNKS. Both
2742 this pointer and result pointer adjusting thunks are
2743 chained here. This pointer thunks to return pointer thunks
2744 will be chained on the return pointer thunk. */
2745 tree context;
2746
2747 union lang_decl_u5
2748 {
2749 /* In a non-thunk FUNCTION_DECL or TEMPLATE_DECL, this is
2750 DECL_CLONED_FUNCTION. */
2751 tree GTY ((tag ("0"))) cloned_function;
2752
2753 /* In a FUNCTION_DECL for which THUNK_P holds this is the
2754 THUNK_FIXED_OFFSET. */
2755 HOST_WIDE_INT GTY ((tag ("1"))) fixed_offset;
2756 } GTY ((desc ("%1.thunk_p"))) u5;
2757
2758 union lang_decl_u3
2759 {
2760 struct cp_token_cache * GTY ((tag ("1"))) pending_inline_info;
2761 tree GTY ((tag ("0"))) saved_auto_return_type;
2762 } GTY ((desc ("%1.pending_inline_p"))) u;
2763
2764 };
2765
2766 /* DECL_LANG_SPECIFIC for namespaces. */
2767
2768 struct GTY(()) lang_decl_ns {
2769 struct lang_decl_base base;
2770 cp_binding_level *level;
2771
2772 /* Inline children. These need to be va_gc, because of PCH. */
2773 vec<tree, va_gc> *inlinees;
2774
2775 /* Hash table of bound decls. It'd be nice to have this inline, but
2776 as the hash_map has a dtor, we can't then put this struct into a
2777 union (until moving to c++11). */
2778 hash_table<named_decl_hash> *bindings;
2779 };
2780
2781 /* DECL_LANG_SPECIFIC for parameters. */
2782
2783 struct GTY(()) lang_decl_parm {
2784 struct lang_decl_base base;
2785 int level;
2786 int index;
2787 };
2788
2789 /* Additional DECL_LANG_SPECIFIC information for structured bindings. */
2790
2791 struct GTY(()) lang_decl_decomp {
2792 struct lang_decl_min min;
2793 /* The artificial underlying "e" variable of the structured binding
2794 variable. */
2795 tree base;
2796 };
2797
2798 /* DECL_LANG_SPECIFIC for all types. It would be nice to just make this a
2799 union rather than a struct containing a union as its only field, but
2800 tree.h declares it as a struct. */
2801
2802 struct GTY(()) lang_decl {
2803 union GTY((desc ("%h.base.selector"))) lang_decl_u {
2804 /* Nothing of only the base type exists. */
2805 struct lang_decl_base GTY ((default)) base;
2806 struct lang_decl_min GTY((tag ("lds_min"))) min;
2807 struct lang_decl_fn GTY ((tag ("lds_fn"))) fn;
2808 struct lang_decl_ns GTY((tag ("lds_ns"))) ns;
2809 struct lang_decl_parm GTY((tag ("lds_parm"))) parm;
2810 struct lang_decl_decomp GTY((tag ("lds_decomp"))) decomp;
2811 } u;
2812 };
2813
2814 /* Looks through a template (if present) to find what it declares. */
2815 #define STRIP_TEMPLATE(NODE) \
2816 (TREE_CODE (NODE) == TEMPLATE_DECL ? DECL_TEMPLATE_RESULT (NODE) : NODE)
2817
2818 #if defined ENABLE_TREE_CHECKING && (GCC_VERSION >= 2007)
2819
2820 #define LANG_DECL_MIN_CHECK(NODE) __extension__ \
2821 ({ struct lang_decl *lt = DECL_LANG_SPECIFIC (NODE); \
2822 if (!LANG_DECL_HAS_MIN (NODE)) \
2823 lang_check_failed (__FILE__, __LINE__, __FUNCTION__); \
2824 <->u.min; })
2825
2826 /* We want to be able to check DECL_CONSTRUCTOR_P and such on a function
2827 template, not just on a FUNCTION_DECL. So when looking for things in
2828 lang_decl_fn, look down through a TEMPLATE_DECL into its result. */
2829 #define LANG_DECL_FN_CHECK(NODE) __extension__ \
2830 ({ struct lang_decl *lt = DECL_LANG_SPECIFIC (STRIP_TEMPLATE (NODE)); \
2831 if (!DECL_DECLARES_FUNCTION_P (NODE) \
2832 || lt->u.base.selector != lds_fn) \
2833 lang_check_failed (__FILE__, __LINE__, __FUNCTION__); \
2834 <->u.fn; })
2835
2836 #define LANG_DECL_NS_CHECK(NODE) __extension__ \
2837 ({ struct lang_decl *lt = DECL_LANG_SPECIFIC (NODE); \
2838 if (TREE_CODE (NODE) != NAMESPACE_DECL \
2839 || lt->u.base.selector != lds_ns) \
2840 lang_check_failed (__FILE__, __LINE__, __FUNCTION__); \
2841 <->u.ns; })
2842
2843 #define LANG_DECL_PARM_CHECK(NODE) __extension__ \
2844 ({ struct lang_decl *lt = DECL_LANG_SPECIFIC (NODE); \
2845 if (TREE_CODE (NODE) != PARM_DECL \
2846 || lt->u.base.selector != lds_parm) \
2847 lang_check_failed (__FILE__, __LINE__, __FUNCTION__); \
2848 <->u.parm; })
2849
2850 #define LANG_DECL_DECOMP_CHECK(NODE) __extension__ \
2851 ({ struct lang_decl *lt = DECL_LANG_SPECIFIC (NODE); \
2852 if (!VAR_P (NODE) \
2853 || lt->u.base.selector != lds_decomp) \
2854 lang_check_failed (__FILE__, __LINE__, __FUNCTION__); \
2855 <->u.decomp; })
2856
2857 #else
2858
2859 #define LANG_DECL_MIN_CHECK(NODE) \
2860 (&DECL_LANG_SPECIFIC (NODE)->u.min)
2861
2862 #define LANG_DECL_FN_CHECK(NODE) \
2863 (&DECL_LANG_SPECIFIC (STRIP_TEMPLATE (NODE))->u.fn)
2864
2865 #define LANG_DECL_NS_CHECK(NODE) \
2866 (&DECL_LANG_SPECIFIC (NODE)->u.ns)
2867
2868 #define LANG_DECL_PARM_CHECK(NODE) \
2869 (&DECL_LANG_SPECIFIC (NODE)->u.parm)
2870
2871 #define LANG_DECL_DECOMP_CHECK(NODE) \
2872 (&DECL_LANG_SPECIFIC (NODE)->u.decomp)
2873
2874 #endif /* ENABLE_TREE_CHECKING */
2875
2876 /* For a FUNCTION_DECL or a VAR_DECL, the language linkage for the
2877 declaration. Some entities (like a member function in a local
2878 class, or a local variable) do not have linkage at all, and this
2879 macro should not be used in those cases.
2880
2881 Implementation note: A FUNCTION_DECL without DECL_LANG_SPECIFIC was
2882 created by language-independent code, and has C linkage. Most
2883 VAR_DECLs have C++ linkage, and do not have DECL_LANG_SPECIFIC, but
2884 we do create DECL_LANG_SPECIFIC for variables with non-C++ linkage. */
2885 #define DECL_LANGUAGE(NODE) \
2886 (DECL_LANG_SPECIFIC (NODE) \
2887 ? DECL_LANG_SPECIFIC (NODE)->u.base.language \
2888 : (TREE_CODE (NODE) == FUNCTION_DECL \
2889 ? lang_c : lang_cplusplus))
2890
2891 /* Set the language linkage for NODE to LANGUAGE. */
2892 #define SET_DECL_LANGUAGE(NODE, LANGUAGE) \
2893 (DECL_LANG_SPECIFIC (NODE)->u.base.language = (LANGUAGE))
2894
2895 /* For FUNCTION_DECLs and TEMPLATE_DECLs: nonzero means that this function
2896 is a constructor. */
2897 #define DECL_CONSTRUCTOR_P(NODE) \
2898 DECL_CXX_CONSTRUCTOR_P (STRIP_TEMPLATE (NODE))
2899
2900 /* Nonzero if NODE (a FUNCTION_DECL) is a constructor for a complete
2901 object. */
2902 #define DECL_COMPLETE_CONSTRUCTOR_P(NODE) \
2903 (DECL_NAME (NODE) == complete_ctor_identifier)
2904
2905 /* Nonzero if NODE (a FUNCTION_DECL) is a constructor for a base
2906 object. */
2907 #define DECL_BASE_CONSTRUCTOR_P(NODE) \
2908 (DECL_NAME (NODE) == base_ctor_identifier)
2909
2910 /* Nonzero if NODE (a FUNCTION_DECL) is a constructor, but not either the
2911 specialized in-charge constructor or the specialized not-in-charge
2912 constructor. */
2913 #define DECL_MAYBE_IN_CHARGE_CONSTRUCTOR_P(NODE) \
2914 (DECL_NAME (NODE) == ctor_identifier)
2915
2916 /* Nonzero if NODE (a FUNCTION_DECL) is a copy constructor. */
2917 #define DECL_COPY_CONSTRUCTOR_P(NODE) \
2918 (DECL_CONSTRUCTOR_P (NODE) && copy_fn_p (NODE) > 0)
2919
2920 /* Nonzero if NODE (a FUNCTION_DECL) is a move constructor. */
2921 #define DECL_MOVE_CONSTRUCTOR_P(NODE) \
2922 (DECL_CONSTRUCTOR_P (NODE) && move_fn_p (NODE))
2923
2924 /* Nonzero if NODE (a FUNCTION_DECL or TEMPLATE_DECL)
2925 is a destructor. */
2926 #define DECL_DESTRUCTOR_P(NODE) \
2927 DECL_CXX_DESTRUCTOR_P (STRIP_TEMPLATE (NODE))
2928
2929 /* Nonzero if NODE (a FUNCTION_DECL) is a destructor, but not the
2930 specialized in-charge constructor, in-charge deleting constructor,
2931 or the base destructor. */
2932 #define DECL_MAYBE_IN_CHARGE_DESTRUCTOR_P(NODE) \
2933 (DECL_NAME (NODE) == dtor_identifier)
2934
2935 /* Nonzero if NODE (a FUNCTION_DECL) is a destructor for a complete
2936 object. */
2937 #define DECL_COMPLETE_DESTRUCTOR_P(NODE) \
2938 (DECL_NAME (NODE) == complete_dtor_identifier)
2939
2940 /* Nonzero if NODE (a FUNCTION_DECL) is a destructor for a base
2941 object. */
2942 #define DECL_BASE_DESTRUCTOR_P(NODE) \
2943 (DECL_NAME (NODE) == base_dtor_identifier)
2944
2945 /* Nonzero if NODE (a FUNCTION_DECL) is a destructor for a complete
2946 object that deletes the object after it has been destroyed. */
2947 #define DECL_DELETING_DESTRUCTOR_P(NODE) \
2948 (DECL_NAME (NODE) == deleting_dtor_identifier)
2949
2950 /* Nonzero if either DECL_MAYBE_IN_CHARGE_CONSTRUCTOR_P or
2951 DECL_MAYBE_IN_CHARGE_DESTRUCTOR_P is true of NODE. */
2952 #define DECL_MAYBE_IN_CHARGE_CDTOR_P(NODE) \
2953 (DECL_MAYBE_IN_CHARGE_CONSTRUCTOR_P (NODE) \
2954 || DECL_MAYBE_IN_CHARGE_DESTRUCTOR_P (NODE))
2955
2956 /* Nonzero if NODE (a _DECL) is a cloned constructor or
2957 destructor. */
2958 #define DECL_CLONED_FUNCTION_P(NODE) \
2959 (DECL_NAME (NODE) \
2960 && IDENTIFIER_CDTOR_P (DECL_NAME (NODE)) \
2961 && !DECL_MAYBE_IN_CHARGE_CDTOR_P (NODE))
2962
2963 /* If DECL_CLONED_FUNCTION_P holds, this is the function that was
2964 cloned. */
2965 #define DECL_CLONED_FUNCTION(NODE) \
2966 (DECL_LANG_SPECIFIC (FUNCTION_DECL_CHECK (NODE))->u.fn.u5.cloned_function)
2967
2968 /* Perform an action for each clone of FN, if FN is a function with
2969 clones. This macro should be used like:
2970
2971 FOR_EACH_CLONE (clone, fn)
2972 { ... }
2973
2974 */
2975 #define FOR_EACH_CLONE(CLONE, FN) \
2976 if (!(TREE_CODE (FN) == FUNCTION_DECL \
2977 && DECL_MAYBE_IN_CHARGE_CDTOR_P (FN))) \
2978 ; \
2979 else \
2980 for (CLONE = DECL_CHAIN (FN); \
2981 CLONE && DECL_CLONED_FUNCTION_P (CLONE); \
2982 CLONE = DECL_CHAIN (CLONE))
2983
2984 /* Nonzero if NODE has DECL_DISCRIMINATOR and not DECL_ACCESS. */
2985 #define DECL_DISCRIMINATOR_P(NODE) \
2986 (((TREE_CODE (NODE) == VAR_DECL && TREE_STATIC (NODE)) \
2987 || DECL_IMPLICIT_TYPEDEF_P (NODE)) \
2988 && DECL_FUNCTION_SCOPE_P (NODE))
2989
2990 /* Discriminator for name mangling. */
2991 #define DECL_DISCRIMINATOR(NODE) (LANG_DECL_MIN_CHECK (NODE)->access)
2992
2993 /* The index of a user-declared parameter in its function, starting at 1.
2994 All artificial parameters will have index 0. */
2995 #define DECL_PARM_INDEX(NODE) \
2996 (LANG_DECL_PARM_CHECK (NODE)->index)
2997
2998 /* The level of a user-declared parameter in its function, starting at 1.
2999 A parameter of the function will have level 1; a parameter of the first
3000 nested function declarator (i.e. t in void f (void (*p)(T t))) will have
3001 level 2. */
3002 #define DECL_PARM_LEVEL(NODE) \
3003 (LANG_DECL_PARM_CHECK (NODE)->level)
3004
3005 /* Nonzero if the VTT parm has been added to NODE. */
3006 #define DECL_HAS_VTT_PARM_P(NODE) \
3007 (LANG_DECL_FN_CHECK (NODE)->has_vtt_parm_p)
3008
3009 /* Nonzero if NODE is a FUNCTION_DECL for which a VTT parameter is
3010 required. */
3011 #define DECL_NEEDS_VTT_PARM_P(NODE) \
3012 (CLASSTYPE_VBASECLASSES (DECL_CONTEXT (NODE)) \
3013 && (DECL_BASE_CONSTRUCTOR_P (NODE) \
3014 || DECL_BASE_DESTRUCTOR_P (NODE)))
3015
3016 /* Nonzero if NODE is a user-defined conversion operator. */
3017 #define DECL_CONV_FN_P(NODE) IDENTIFIER_CONV_OP_P (DECL_NAME (NODE))
3018
3019 /* The type to which conversion operator FN converts to. */
3020 #define DECL_CONV_FN_TYPE(FN) \
3021 TREE_TYPE ((gcc_checking_assert (DECL_CONV_FN_P (FN)), DECL_NAME (FN)))
3022
3023 /* Nonzero if NODE, a static data member, was declared in its class as an
3024 array of unknown bound. */
3025 #define VAR_HAD_UNKNOWN_BOUND(NODE) \
3026 (DECL_LANG_SPECIFIC (VAR_DECL_CHECK (NODE)) \
3027 ? DECL_LANG_SPECIFIC (NODE)->u.base.unknown_bound_p \
3028 : false)
3029 #define SET_VAR_HAD_UNKNOWN_BOUND(NODE) \
3030 (DECL_LANG_SPECIFIC (VAR_DECL_CHECK (NODE))->u.base.unknown_bound_p = true)
3031
3032 /* True iff decl NODE is for an overloaded operator. */
3033 #define DECL_OVERLOADED_OPERATOR_P(NODE) \
3034 IDENTIFIER_ANY_OP_P (DECL_NAME (NODE))
3035
3036 /* Nonzero if NODE is an assignment operator (including += and such). */
3037 #define DECL_ASSIGNMENT_OPERATOR_P(NODE) \
3038 IDENTIFIER_ASSIGN_OP_P (DECL_NAME (NODE))
3039
3040 /* NODE is a function_decl for an overloaded operator. Return its
3041 compressed (raw) operator code. Note that this is not a TREE_CODE. */
3042 #define DECL_OVERLOADED_OPERATOR_CODE_RAW(NODE) \
3043 (LANG_DECL_FN_CHECK (NODE)->ovl_op_code)
3044
3045 /* DECL is an overloaded operator. Test whether it is for TREE_CODE
3046 (a literal constant). */
3047 #define DECL_OVERLOADED_OPERATOR_IS(DECL, CODE) \
3048 (DECL_OVERLOADED_OPERATOR_CODE_RAW (DECL) == OVL_OP_##CODE)
3049
3050 /* For FUNCTION_DECLs: nonzero means that this function is a
3051 constructor or a destructor with an extra in-charge parameter to
3052 control whether or not virtual bases are constructed. */
3053 #define DECL_HAS_IN_CHARGE_PARM_P(NODE) \
3054 (LANG_DECL_FN_CHECK (NODE)->has_in_charge_parm_p)
3055
3056 /* Nonzero if DECL is a declaration of __builtin_constant_p. */
3057 #define DECL_IS_BUILTIN_CONSTANT_P(NODE) \
3058 (TREE_CODE (NODE) == FUNCTION_DECL \
3059 && DECL_BUILT_IN_CLASS (NODE) == BUILT_IN_NORMAL \
3060 && DECL_FUNCTION_CODE (NODE) == BUILT_IN_CONSTANT_P)
3061
3062 /* Nonzero for _DECL means that this decl appears in (or will appear
3063 in) as a member in a RECORD_TYPE or UNION_TYPE node. It is also for
3064 detecting circularity in case members are multiply defined. In the
3065 case of a VAR_DECL, it means that no definition has been seen, even
3066 if an initializer has been. */
3067 #define DECL_IN_AGGR_P(NODE) (DECL_LANG_FLAG_3 (NODE))
3068
3069 /* Nonzero for a VAR_DECL means that the variable's initialization (if
3070 any) has been processed. (In general, DECL_INITIALIZED_P is
3071 !DECL_EXTERNAL, but static data members may be initialized even if
3072 not defined.) */
3073 #define DECL_INITIALIZED_P(NODE) \
3074 (TREE_LANG_FLAG_1 (VAR_DECL_CHECK (NODE)))
3075
3076 /* Nonzero for a VAR_DECL iff an explicit initializer was provided
3077 or a non-trivial constructor is called. */
3078 #define DECL_NONTRIVIALLY_INITIALIZED_P(NODE) \
3079 (TREE_LANG_FLAG_6 (VAR_DECL_CHECK (NODE)))
3080
3081 /* Nonzero for a VAR_DECL that was initialized with a
3082 constant-expression. */
3083 #define DECL_INITIALIZED_BY_CONSTANT_EXPRESSION_P(NODE) \
3084 (TREE_LANG_FLAG_2 (VAR_DECL_CHECK (NODE)))
3085
3086 /* Nonzero if the DECL was initialized in the class definition itself,
3087 rather than outside the class. This is used for both static member
3088 VAR_DECLS, and FUNCTION_DECLS that are defined in the class. */
3089 #define DECL_INITIALIZED_IN_CLASS_P(DECL) \
3090 (DECL_LANG_SPECIFIC (VAR_OR_FUNCTION_DECL_CHECK (DECL)) \
3091 ->u.base.initialized_in_class)
3092
3093 /* Nonzero if the DECL is used in the sense of 3.2 [basic.def.odr].
3094 Only available for decls with DECL_LANG_SPECIFIC. */
3095 #define DECL_ODR_USED(DECL) \
3096 (DECL_LANG_SPECIFIC (VAR_OR_FUNCTION_DECL_CHECK (DECL)) \
3097 ->u.base.odr_used)
3098
3099 /* Nonzero for DECL means that this decl is just a friend declaration,
3100 and should not be added to the list of members for this class. */
3101 #define DECL_FRIEND_P(NODE) \
3102 (DECL_LANG_SPECIFIC (TYPE_FUNCTION_OR_TEMPLATE_DECL_CHECK (NODE)) \
3103 ->u.base.friend_or_tls)
3104
3105 /* Nonzero if the thread-local variable was declared with __thread as
3106 opposed to thread_local. */
3107 #define DECL_GNU_TLS_P(NODE) \
3108 (DECL_LANG_SPECIFIC (VAR_DECL_CHECK (NODE)) \
3109 && DECL_LANG_SPECIFIC (NODE)->u.base.friend_or_tls)
3110 #define SET_DECL_GNU_TLS_P(NODE) \
3111 (retrofit_lang_decl (VAR_DECL_CHECK (NODE)), \
3112 DECL_LANG_SPECIFIC (NODE)->u.base.friend_or_tls = true)
3113
3114 /* A TREE_LIST of the types which have befriended this FUNCTION_DECL. */
3115 #define DECL_BEFRIENDING_CLASSES(NODE) \
3116 (LANG_DECL_FN_CHECK (NODE)->befriending_classes)
3117
3118 /* Nonzero for FUNCTION_DECL means that this decl is a static
3119 member function. */
3120 #define DECL_STATIC_FUNCTION_P(NODE) \
3121 (LANG_DECL_FN_CHECK (NODE)->static_function)
3122
3123 /* Nonzero for FUNCTION_DECL means that this decl is a non-static
3124 member function. */
3125 #define DECL_NONSTATIC_MEMBER_FUNCTION_P(NODE) \
3126 (TREE_CODE (TREE_TYPE (NODE)) == METHOD_TYPE)
3127
3128 /* Nonzero for FUNCTION_DECL means that this decl is a member function
3129 (static or non-static). */
3130 #define DECL_FUNCTION_MEMBER_P(NODE) \
3131 (DECL_NONSTATIC_MEMBER_FUNCTION_P (NODE) || DECL_STATIC_FUNCTION_P (NODE))
3132
3133 /* Nonzero for FUNCTION_DECL means that this member function
3134 has `this' as const X *const. */
3135 #define DECL_CONST_MEMFUNC_P(NODE) \
3136 (DECL_NONSTATIC_MEMBER_FUNCTION_P (NODE) \
3137 && CP_TYPE_CONST_P (TREE_TYPE (TREE_VALUE \
3138 (TYPE_ARG_TYPES (TREE_TYPE (NODE))))))
3139
3140 /* Nonzero for FUNCTION_DECL means that this member function
3141 has `this' as volatile X *const. */
3142 #define DECL_VOLATILE_MEMFUNC_P(NODE) \
3143 (DECL_NONSTATIC_MEMBER_FUNCTION_P (NODE) \
3144 && CP_TYPE_VOLATILE_P (TREE_TYPE (TREE_VALUE \
3145 (TYPE_ARG_TYPES (TREE_TYPE (NODE))))))
3146
3147 /* Nonzero for a DECL means that this member is a non-static member. */
3148 #define DECL_NONSTATIC_MEMBER_P(NODE) \
3149 (DECL_NONSTATIC_MEMBER_FUNCTION_P (NODE) \
3150 || TREE_CODE (NODE) == FIELD_DECL)
3151
3152 /* Nonzero for a FIELD_DECL means that this member object type
3153 is mutable. */
3154 #define DECL_MUTABLE_P(NODE) (DECL_LANG_FLAG_0 (FIELD_DECL_CHECK (NODE)))
3155
3156 /* Nonzero for _DECL means that this constructor or conversion function is
3157 non-converting. */
3158 #define DECL_NONCONVERTING_P(NODE) \
3159 (LANG_DECL_FN_CHECK (NODE)->nonconverting)
3160
3161 /* Nonzero for FUNCTION_DECL means that this member function is a pure
3162 virtual function. */
3163 #define DECL_PURE_VIRTUAL_P(NODE) \
3164 (LANG_DECL_FN_CHECK (NODE)->pure_virtual)
3165
3166 /* Nonzero for FUNCTION_DECL means that this member function (either
3167 a constructor or a conversion function) has an explicit specifier
3168 with a value-dependent expression. */
3169 #define DECL_HAS_DEPENDENT_EXPLICIT_SPEC_P(NODE) \
3170 (LANG_DECL_FN_CHECK (NODE)->has_dependent_explicit_spec_p)
3171
3172 /* Nonzero for a defaulted FUNCTION_DECL for which we haven't decided yet if
3173 it's deleted; we will decide in synthesize_method. */
3174 #define DECL_MAYBE_DELETED(NODE) \
3175 (LANG_DECL_FN_CHECK (NODE)->maybe_deleted)
3176
3177 /* True (in a FUNCTION_DECL) if NODE is a virtual function that is an
3178 invalid overrider for a function from a base class. Once we have
3179 complained about an invalid overrider we avoid complaining about it
3180 again. */
3181 #define DECL_INVALID_OVERRIDER_P(NODE) \
3182 (DECL_LANG_FLAG_4 (NODE))
3183
3184 /* True (in a FUNCTION_DECL) if NODE is a function declared with
3185 an override virt-specifier */
3186 #define DECL_OVERRIDE_P(NODE) (TREE_LANG_FLAG_0 (NODE))
3187
3188 /* The thunks associated with NODE, a FUNCTION_DECL. */
3189 #define DECL_THUNKS(NODE) \
3190 (DECL_VIRTUAL_P (NODE) ? LANG_DECL_FN_CHECK (NODE)->context : NULL_TREE)
3191
3192 /* Set DECL_THUNKS. */
3193 #define SET_DECL_THUNKS(NODE,THUNKS) \
3194 (LANG_DECL_FN_CHECK (NODE)->context = (THUNKS))
3195
3196 /* If NODE, a FUNCTION_DECL, is a C++11 inheriting constructor, then this
3197 is the constructor it inherits from. */
3198 #define DECL_INHERITED_CTOR(NODE) \
3199 (DECL_DECLARES_FUNCTION_P (NODE) && DECL_CONSTRUCTOR_P (NODE) \
3200 ? LANG_DECL_FN_CHECK (NODE)->context : NULL_TREE)
3201
3202 /* And this is the base that constructor comes from. */
3203 #define DECL_INHERITED_CTOR_BASE(NODE) \
3204 (DECL_INHERITED_CTOR (NODE) \
3205 ? DECL_CONTEXT (flag_new_inheriting_ctors \
3206 ? strip_inheriting_ctors (NODE) \
3207 : DECL_INHERITED_CTOR (NODE)) \
3208 : NULL_TREE)
3209
3210 /* Set the inherited base. */
3211 #define SET_DECL_INHERITED_CTOR(NODE,INH) \
3212 (LANG_DECL_FN_CHECK (NODE)->context = (INH))
3213
3214 /* Nonzero if NODE is a thunk, rather than an ordinary function. */
3215 #define DECL_THUNK_P(NODE) \
3216 (TREE_CODE (NODE) == FUNCTION_DECL \
3217 && DECL_LANG_SPECIFIC (NODE) \
3218 && LANG_DECL_FN_CHECK (NODE)->thunk_p)
3219
3220 /* Set DECL_THUNK_P for node. */
3221 #define SET_DECL_THUNK_P(NODE, THIS_ADJUSTING) \
3222 (LANG_DECL_FN_CHECK (NODE)->thunk_p = 1, \
3223 LANG_DECL_FN_CHECK (NODE)->this_thunk_p = (THIS_ADJUSTING))
3224
3225 /* Nonzero if NODE is a this pointer adjusting thunk. */
3226 #define DECL_THIS_THUNK_P(NODE) \
3227 (DECL_THUNK_P (NODE) && LANG_DECL_FN_CHECK (NODE)->this_thunk_p)
3228
3229 /* Nonzero if NODE is a result pointer adjusting thunk. */
3230 #define DECL_RESULT_THUNK_P(NODE) \
3231 (DECL_THUNK_P (NODE) && !LANG_DECL_FN_CHECK (NODE)->this_thunk_p)
3232
3233 /* Nonzero if NODE is a FUNCTION_DECL, but not a thunk. */
3234 #define DECL_NON_THUNK_FUNCTION_P(NODE) \
3235 (TREE_CODE (NODE) == FUNCTION_DECL && !DECL_THUNK_P (NODE))
3236
3237 /* Nonzero if NODE is `extern "C"'. */
3238 #define DECL_EXTERN_C_P(NODE) \
3239 (DECL_LANGUAGE (NODE) == lang_c)
3240
3241 /* Nonzero if NODE is an `extern "C"' function. */
3242 #define DECL_EXTERN_C_FUNCTION_P(NODE) \
3243 (DECL_NON_THUNK_FUNCTION_P (NODE) && DECL_EXTERN_C_P (NODE))
3244
3245 /* True if DECL is declared 'constexpr'. */
3246 #define DECL_DECLARED_CONSTEXPR_P(DECL) \
3247 DECL_LANG_FLAG_8 (VAR_OR_FUNCTION_DECL_CHECK (STRIP_TEMPLATE (DECL)))
3248
3249 /* True if FNDECL is an immediate function. */
3250 #define DECL_IMMEDIATE_FUNCTION_P(NODE) \
3251 (DECL_LANG_SPECIFIC (FUNCTION_DECL_CHECK (STRIP_TEMPLATE (NODE))) \
3252 ? LANG_DECL_FN_CHECK (NODE)->immediate_fn_p \
3253 : false)
3254 #define SET_DECL_IMMEDIATE_FUNCTION_P(NODE) \
3255 (retrofit_lang_decl (FUNCTION_DECL_CHECK (NODE)), \
3256 LANG_DECL_FN_CHECK (NODE)->immediate_fn_p = true)
3257
3258 // True if NODE was declared as 'concept'. The flag implies that the
3259 // declaration is constexpr, that the declaration cannot be specialized or
3260 // refined, and that the result type must be convertible to bool.
3261 #define DECL_DECLARED_CONCEPT_P(NODE) \
3262 (DECL_LANG_SPECIFIC (NODE)->u.base.concept_p)
3263
3264 /* Nonzero if this DECL is the __PRETTY_FUNCTION__ variable in a
3265 template function. */
3266 #define DECL_PRETTY_FUNCTION_P(NODE) \
3267 (DECL_NAME (NODE) \
3268 && id_equal (DECL_NAME (NODE), "__PRETTY_FUNCTION__"))
3269
3270 /* For a DECL, true if it is __func__ or similar. */
3271 #define DECL_FNAME_P(NODE) \
3272 (VAR_P (NODE) && DECL_NAME (NODE) && DECL_ARTIFICIAL (NODE) \
3273 && DECL_HAS_VALUE_EXPR_P (NODE) \
3274 && (id_equal (DECL_NAME (NODE), "__PRETTY_FUNCTION__") \
3275 || id_equal (DECL_NAME (NODE), "__FUNCTION__") \
3276 || id_equal (DECL_NAME (NODE), "__func__")))
3277
3278 /* Nonzero if the variable was declared to be thread-local.
3279 We need a special C++ version of this test because the middle-end
3280 DECL_THREAD_LOCAL_P uses the symtab, so we can't use it for
3281 templates. */
3282 #define CP_DECL_THREAD_LOCAL_P(NODE) \
3283 (TREE_LANG_FLAG_0 (VAR_DECL_CHECK (NODE)))
3284
3285 /* The _TYPE context in which this _DECL appears. This field holds the
3286 class where a virtual function instance is actually defined. */
3287 #define DECL_CLASS_CONTEXT(NODE) \
3288 (DECL_CLASS_SCOPE_P (NODE) ? DECL_CONTEXT (NODE) : NULL_TREE)
3289
3290 /* For a non-member friend function, the class (if any) in which this
3291 friend was defined. For example, given:
3292
3293 struct S { friend void f () { ... } };
3294
3295 the DECL_FRIEND_CONTEXT for `f' will be `S'. */
3296 #define DECL_FRIEND_CONTEXT(NODE) \
3297 ((DECL_DECLARES_FUNCTION_P (NODE) \
3298 && DECL_FRIEND_P (NODE) && !DECL_FUNCTION_MEMBER_P (NODE)) \
3299 ? LANG_DECL_FN_CHECK (NODE)->context \
3300 : NULL_TREE)
3301
3302 /* Set the DECL_FRIEND_CONTEXT for NODE to CONTEXT. */
3303 #define SET_DECL_FRIEND_CONTEXT(NODE, CONTEXT) \
3304 (LANG_DECL_FN_CHECK (NODE)->context = (CONTEXT))
3305
3306 #define CP_DECL_CONTEXT(NODE) \
3307 (!DECL_FILE_SCOPE_P (NODE) ? DECL_CONTEXT (NODE) : global_namespace)
3308 #define CP_TYPE_CONTEXT(NODE) \
3309 (!TYPE_FILE_SCOPE_P (NODE) ? TYPE_CONTEXT (NODE) : global_namespace)
3310 #define FROB_CONTEXT(NODE) \
3311 ((NODE) == global_namespace ? DECL_CONTEXT (NODE) : (NODE))
3312
3313 /* 1 iff NODE has namespace scope, including the global namespace. */
3314 #define DECL_NAMESPACE_SCOPE_P(NODE) \
3315 (!DECL_TEMPLATE_PARM_P (NODE) \
3316 && TREE_CODE (CP_DECL_CONTEXT (NODE)) == NAMESPACE_DECL)
3317
3318 #define TYPE_NAMESPACE_SCOPE_P(NODE) \
3319 (TREE_CODE (CP_TYPE_CONTEXT (NODE)) == NAMESPACE_DECL)
3320
3321 #define NAMESPACE_SCOPE_P(NODE) \
3322 ((DECL_P (NODE) && DECL_NAMESPACE_SCOPE_P (NODE)) \
3323 || (TYPE_P (NODE) && TYPE_NAMESPACE_SCOPE_P (NODE)))
3324
3325 /* 1 iff NODE is a class member. */
3326 #define DECL_CLASS_SCOPE_P(NODE) \
3327 (DECL_CONTEXT (NODE) && TYPE_P (DECL_CONTEXT (NODE)))
3328
3329 #define TYPE_CLASS_SCOPE_P(NODE) \
3330 (TYPE_CONTEXT (NODE) && TYPE_P (TYPE_CONTEXT (NODE)))
3331
3332 /* 1 iff NODE is function-local. */
3333 #define DECL_FUNCTION_SCOPE_P(NODE) \
3334 (DECL_CONTEXT (NODE) \
3335 && TREE_CODE (DECL_CONTEXT (NODE)) == FUNCTION_DECL)
3336
3337 #define TYPE_FUNCTION_SCOPE_P(NODE) \
3338 (TYPE_CONTEXT (NODE) && TREE_CODE (TYPE_CONTEXT (NODE)) == FUNCTION_DECL)
3339
3340 /* 1 iff VAR_DECL node NODE is a type-info decl. This flag is set for
3341 both the primary typeinfo object and the associated NTBS name. */
3342 #define DECL_TINFO_P(NODE) TREE_LANG_FLAG_4 (VAR_DECL_CHECK (NODE))
3343
3344 /* 1 iff VAR_DECL node NODE is virtual table or VTT. We forward to
3345 DECL_VIRTUAL_P from the common code, as that has the semantics we
3346 need. But we want a more descriptive name. */
3347 #define DECL_VTABLE_OR_VTT_P(NODE) DECL_VIRTUAL_P (VAR_DECL_CHECK (NODE))
3348
3349 /* 1 iff FUNCTION_TYPE or METHOD_TYPE has a ref-qualifier (either & or &&). */
3350 #define FUNCTION_REF_QUALIFIED(NODE) \
3351 TREE_LANG_FLAG_4 (FUNC_OR_METHOD_CHECK (NODE))
3352
3353 /* 1 iff FUNCTION_TYPE or METHOD_TYPE has &&-ref-qualifier. */
3354 #define FUNCTION_RVALUE_QUALIFIED(NODE) \
3355 TREE_LANG_FLAG_5 (FUNC_OR_METHOD_CHECK (NODE))
3356
3357 /* 1 iff NODE is function-local, but for types. */
3358 #define LOCAL_CLASS_P(NODE) \
3359 (decl_function_context (TYPE_MAIN_DECL (NODE)) != NULL_TREE)
3360
3361 /* The nesting depth of namespace, class or function. Makes is_ancestor much
3362 simpler. Only 8 bits available. */
3363 #define SCOPE_DEPTH(NODE) \
3364 (NAMESPACE_DECL_CHECK (NODE)->base.u.bits.address_space)
3365
3366 /* Whether the namepace is an inline namespace. */
3367 #define DECL_NAMESPACE_INLINE_P(NODE) \
3368 TREE_LANG_FLAG_0 (NAMESPACE_DECL_CHECK (NODE))
3369
3370 /* In a NAMESPACE_DECL, a vector of inline namespaces. */
3371 #define DECL_NAMESPACE_INLINEES(NODE) \
3372 (LANG_DECL_NS_CHECK (NODE)->inlinees)
3373
3374 /* Pointer to hash_map from IDENTIFIERS to DECLS */
3375 #define DECL_NAMESPACE_BINDINGS(NODE) \
3376 (LANG_DECL_NS_CHECK (NODE)->bindings)
3377
3378 /* In a NAMESPACE_DECL, points to the original namespace if this is
3379 a namespace alias. */
3380 #define DECL_NAMESPACE_ALIAS(NODE) \
3381 DECL_ABSTRACT_ORIGIN (NAMESPACE_DECL_CHECK (NODE))
3382 #define ORIGINAL_NAMESPACE(NODE) \
3383 (DECL_NAMESPACE_ALIAS (NODE) ? DECL_NAMESPACE_ALIAS (NODE) : (NODE))
3384
3385 /* Nonzero if NODE is the std namespace. */
3386 #define DECL_NAMESPACE_STD_P(NODE) \
3387 ((NODE) == std_node)
3388
3389 /* In a TREE_LIST in an attribute list, indicates that the attribute
3390 must be applied at instantiation time. */
3391 #define ATTR_IS_DEPENDENT(NODE) TREE_LANG_FLAG_0 (TREE_LIST_CHECK (NODE))
3392
3393 /* In a TREE_LIST in the argument of attribute abi_tag, indicates that the tag
3394 was inherited from a template parameter, not explicitly indicated. */
3395 #define ABI_TAG_IMPLICIT(NODE) TREE_LANG_FLAG_0 (TREE_LIST_CHECK (NODE))
3396
3397 /* Non zero if this is a using decl for a dependent scope. */
3398 #define DECL_DEPENDENT_P(NODE) DECL_LANG_FLAG_0 (USING_DECL_CHECK (NODE))
3399
3400 /* The scope named in a using decl. */
3401 #define USING_DECL_SCOPE(NODE) DECL_RESULT_FLD (USING_DECL_CHECK (NODE))
3402
3403 /* The decls named by a using decl. */
3404 #define USING_DECL_DECLS(NODE) DECL_INITIAL (USING_DECL_CHECK (NODE))
3405
3406 /* Non zero if the using decl refers to a dependent type. */
3407 #define USING_DECL_TYPENAME_P(NODE) DECL_LANG_FLAG_1 (USING_DECL_CHECK (NODE))
3408
3409 /* In a FUNCTION_DECL, this is nonzero if this function was defined in
3410 the class definition. We have saved away the text of the function,
3411 but have not yet processed it. */
3412 #define DECL_PENDING_INLINE_P(NODE) \
3413 (LANG_DECL_FN_CHECK (NODE)->pending_inline_p)
3414
3415 /* If DECL_PENDING_INLINE_P holds, this is the saved text of the
3416 function. */
3417 #define DECL_PENDING_INLINE_INFO(NODE) \
3418 (LANG_DECL_FN_CHECK (NODE)->u.pending_inline_info)
3419
3420 /* Nonzero for TYPE_DECL means that it was written 'using name = type'. */
3421 #define TYPE_DECL_ALIAS_P(NODE) \
3422 DECL_LANG_FLAG_6 (TYPE_DECL_CHECK (NODE))
3423
3424 /* Nonzero for TEMPLATE_DECL means that it is a 'complex' alias template. */
3425 #define TEMPLATE_DECL_COMPLEX_ALIAS_P(NODE) \
3426 DECL_LANG_FLAG_2 (TEMPLATE_DECL_CHECK (NODE))
3427
3428 /* Nonzero for a type which is an alias for another type; i.e, a type
3429 which declaration was written 'using name-of-type =
3430 another-type'. */
3431 #define TYPE_ALIAS_P(NODE) \
3432 (TYPE_P (NODE) \
3433 && TYPE_NAME (NODE) \
3434 && TREE_CODE (TYPE_NAME (NODE)) == TYPE_DECL \
3435 && TYPE_DECL_ALIAS_P (TYPE_NAME (NODE)))
3436
3437 /* If non-NULL for a VAR_DECL, FUNCTION_DECL, TYPE_DECL, TEMPLATE_DECL,
3438 or CONCEPT_DECL, the entity is either a template specialization (if
3439 DECL_USE_TEMPLATE is nonzero) or the abstract instance of the
3440 template itself.
3441
3442 In either case, DECL_TEMPLATE_INFO is a TEMPLATE_INFO, whose
3443 TI_TEMPLATE is the TEMPLATE_DECL of which this entity is a
3444 specialization or abstract instance. The TI_ARGS is the
3445 template arguments used to specialize the template.
3446
3447 Consider:
3448
3449 template <typename T> struct S { friend void f(T) {} };
3450
3451 In this case, S<int>::f is, from the point of view of the compiler,
3452 an instantiation of a template -- but, from the point of view of
3453 the language, each instantiation of S results in a wholly unrelated
3454 global function f. In this case, DECL_TEMPLATE_INFO for S<int>::f
3455 will be non-NULL, but DECL_USE_TEMPLATE will be zero. */
3456 #define DECL_TEMPLATE_INFO(NODE) \
3457 (DECL_LANG_SPECIFIC (TEMPLATE_INFO_DECL_CHECK (NODE)) \
3458 ->u.min.template_info)
3459
3460 /* For a lambda capture proxy, its captured variable. */
3461 #define DECL_CAPTURED_VARIABLE(NODE) \
3462 (LANG_DECL_MIN_CHECK (NODE)->access)
3463
3464 /* For a VAR_DECL, indicates that the variable is actually a
3465 non-static data member of anonymous union that has been promoted to
3466 variable status. */
3467 #define DECL_ANON_UNION_VAR_P(NODE) \
3468 (DECL_LANG_FLAG_4 (VAR_DECL_CHECK (NODE)))
3469
3470 /* Template information for a RECORD_TYPE or UNION_TYPE. */
3471 #define CLASSTYPE_TEMPLATE_INFO(NODE) \
3472 (TYPE_LANG_SLOT_1 (RECORD_OR_UNION_CHECK (NODE)))
3473
3474 /* Template information for a template template parameter. */
3475 #define TEMPLATE_TEMPLATE_PARM_TEMPLATE_INFO(NODE) \
3476 (TYPE_LANG_SLOT_1 (BOUND_TEMPLATE_TEMPLATE_PARM_TYPE_CHECK (NODE)))
3477
3478 /* Template information for an ENUMERAL_, RECORD_, UNION_TYPE, or
3479 BOUND_TEMPLATE_TEMPLATE_PARM type. This ignores any alias
3480 templateness of NODE. It'd be nice if this could unconditionally
3481 access the slot, rather than return NULL if given a
3482 non-templatable type. */
3483 #define TYPE_TEMPLATE_INFO(NODE) \
3484 (TREE_CODE (NODE) == ENUMERAL_TYPE \
3485 || TREE_CODE (NODE) == BOUND_TEMPLATE_TEMPLATE_PARM \
3486 || RECORD_OR_UNION_TYPE_P (NODE) \
3487 ? TYPE_LANG_SLOT_1 (NODE) : NULL_TREE)
3488
3489 /* Template information (if any) for an alias type. */
3490 #define TYPE_ALIAS_TEMPLATE_INFO(NODE) \
3491 (DECL_LANG_SPECIFIC (TYPE_NAME (NODE)) \
3492 ? DECL_TEMPLATE_INFO (TYPE_NAME (NODE)) \
3493 : NULL_TREE)
3494
3495 /* If NODE is a type alias, this accessor returns the template info
3496 for the alias template (if any). Otherwise behave as
3497 TYPE_TEMPLATE_INFO. */
3498 #define TYPE_TEMPLATE_INFO_MAYBE_ALIAS(NODE) \
3499 (typedef_variant_p (NODE) \
3500 ? TYPE_ALIAS_TEMPLATE_INFO (NODE) \
3501 : TYPE_TEMPLATE_INFO (NODE))
3502
3503 /* Set the template information for an ENUMERAL_, RECORD_, or
3504 UNION_TYPE to VAL. */
3505 #define SET_TYPE_TEMPLATE_INFO(NODE, VAL) \
3506 (TREE_CODE (NODE) == ENUMERAL_TYPE \
3507 || (CLASS_TYPE_P (NODE) && !TYPE_ALIAS_P (NODE)) \
3508 ? (TYPE_LANG_SLOT_1 (NODE) = (VAL)) \
3509 : (DECL_TEMPLATE_INFO (TYPE_NAME (NODE)) = (VAL)))
3510
3511 #define TI_TEMPLATE(NODE) \
3512 ((struct tree_template_info*)TEMPLATE_INFO_CHECK (NODE))->tmpl
3513 #define TI_ARGS(NODE) \
3514 ((struct tree_template_info*)TEMPLATE_INFO_CHECK (NODE))->args
3515 #define TI_PENDING_TEMPLATE_FLAG(NODE) \
3516 TREE_LANG_FLAG_1 (TEMPLATE_INFO_CHECK (NODE))
3517 /* For a given TREE_VEC containing a template argument list,
3518 this property contains the number of arguments that are not
3519 defaulted. */
3520 #define NON_DEFAULT_TEMPLATE_ARGS_COUNT(NODE) \
3521 TREE_CHAIN (TREE_VEC_CHECK (NODE))
3522
3523 /* Below are the setter and getter of the NON_DEFAULT_TEMPLATE_ARGS_COUNT
3524 property. */
3525 #define SET_NON_DEFAULT_TEMPLATE_ARGS_COUNT(NODE, INT_VALUE) \
3526 NON_DEFAULT_TEMPLATE_ARGS_COUNT(NODE) = build_int_cst (NULL_TREE, INT_VALUE)
3527 #if CHECKING_P
3528 #define GET_NON_DEFAULT_TEMPLATE_ARGS_COUNT(NODE) \
3529 int_cst_value (NON_DEFAULT_TEMPLATE_ARGS_COUNT (NODE))
3530 #else
3531 #define GET_NON_DEFAULT_TEMPLATE_ARGS_COUNT(NODE) \
3532 NON_DEFAULT_TEMPLATE_ARGS_COUNT (NODE) \
3533 ? int_cst_value (NON_DEFAULT_TEMPLATE_ARGS_COUNT (NODE)) \
3534 : TREE_VEC_LENGTH (INNERMOST_TEMPLATE_ARGS (NODE))
3535 #endif
3536 /* The list of typedefs - used in the template - that need
3537 access checking at template instantiation time.
3538
3539 FIXME this should be associated with the TEMPLATE_DECL, not the
3540 TEMPLATE_INFO. */
3541 #define TI_TYPEDEFS_NEEDING_ACCESS_CHECKING(NODE) \
3542 ((struct tree_template_info*)TEMPLATE_INFO_CHECK \
3543 (NODE))->typedefs_needing_access_checking
3544
3545 /* We use TREE_VECs to hold template arguments. If there is only one
3546 level of template arguments, then the TREE_VEC contains the
3547 arguments directly. If there is more than one level of template
3548 arguments, then each entry in the TREE_VEC is itself a TREE_VEC,
3549 containing the template arguments for a single level. The first
3550 entry in the outer TREE_VEC is the outermost level of template
3551 parameters; the last is the innermost.
3552
3553 It is incorrect to ever form a template argument vector containing
3554 only one level of arguments, but which is a TREE_VEC containing as
3555 its only entry the TREE_VEC for that level.
3556
3557 For each TREE_VEC containing the template arguments for a single
3558 level, it's possible to get or set the number of non defaulted
3559 template arguments by using the accessor macros
3560 GET_NON_DEFAULT_TEMPLATE_ARGS_COUNT or
3561 SET_NON_DEFAULT_TEMPLATE_ARGS_COUNT. */
3562
3563 /* Nonzero if the template arguments is actually a vector of vectors,
3564 rather than just a vector. */
3565 #define TMPL_ARGS_HAVE_MULTIPLE_LEVELS(NODE) \
3566 (NODE && TREE_VEC_LENGTH (NODE) && TREE_VEC_ELT (NODE, 0) \
3567 && TREE_CODE (TREE_VEC_ELT (NODE, 0)) == TREE_VEC)
3568
3569 /* The depth of a template argument vector. When called directly by
3570 the parser, we use a TREE_LIST rather than a TREE_VEC to represent
3571 template arguments. In fact, we may even see NULL_TREE if there
3572 are no template arguments. In both of those cases, there is only
3573 one level of template arguments. */
3574 #define TMPL_ARGS_DEPTH(NODE) \
3575 (TMPL_ARGS_HAVE_MULTIPLE_LEVELS (NODE) ? TREE_VEC_LENGTH (NODE) : 1)
3576
3577 /* The LEVELth level of the template ARGS. The outermost level of
3578 args is level 1, not level 0. */
3579 #define TMPL_ARGS_LEVEL(ARGS, LEVEL) \
3580 (TMPL_ARGS_HAVE_MULTIPLE_LEVELS (ARGS) \
3581 ? TREE_VEC_ELT (ARGS, (LEVEL) - 1) : (ARGS))
3582
3583 /* Set the LEVELth level of the template ARGS to VAL. This macro does
3584 not work with single-level argument vectors. */
3585 #define SET_TMPL_ARGS_LEVEL(ARGS, LEVEL, VAL) \
3586 (TREE_VEC_ELT (ARGS, (LEVEL) - 1) = (VAL))
3587
3588 /* Accesses the IDXth parameter in the LEVELth level of the ARGS. */
3589 #define TMPL_ARG(ARGS, LEVEL, IDX) \
3590 (TREE_VEC_ELT (TMPL_ARGS_LEVEL (ARGS, LEVEL), IDX))
3591
3592 /* Given a single level of template arguments in NODE, return the
3593 number of arguments. */
3594 #define NUM_TMPL_ARGS(NODE) \
3595 (TREE_VEC_LENGTH (NODE))
3596
3597 /* Returns the innermost level of template arguments in ARGS. */
3598 #define INNERMOST_TEMPLATE_ARGS(NODE) \
3599 (get_innermost_template_args ((NODE), 1))
3600
3601 /* The number of levels of template parameters given by NODE. */
3602 #define TMPL_PARMS_DEPTH(NODE) \
3603 ((HOST_WIDE_INT) TREE_INT_CST_LOW (TREE_PURPOSE (NODE)))
3604
3605 /* The TEMPLATE_DECL instantiated or specialized by NODE. This
3606 TEMPLATE_DECL will be the immediate parent, not the most general
3607 template. For example, in:
3608
3609 template <class T> struct S { template <class U> void f(U); }
3610
3611 the FUNCTION_DECL for S<int>::f<double> will have, as its
3612 DECL_TI_TEMPLATE, `template <class U> S<int>::f<U>'.
3613
3614 As a special case, for a member friend template of a template
3615 class, this value will not be a TEMPLATE_DECL, but rather an
3616 IDENTIFIER_NODE or OVERLOAD indicating the name of the template and
3617 any explicit template arguments provided. For example, in:
3618
3619 template <class T> struct S { friend void f<int>(int, double); }
3620
3621 the DECL_TI_TEMPLATE will be an IDENTIFIER_NODE for `f' and the
3622 DECL_TI_ARGS will be {int}.
3623
3624 For a FIELD_DECL with a non-static data member initializer, this value
3625 is the FIELD_DECL it was instantiated from. */
3626 #define DECL_TI_TEMPLATE(NODE) TI_TEMPLATE (DECL_TEMPLATE_INFO (NODE))
3627
3628 /* The template arguments used to obtain this decl from the most
3629 general form of DECL_TI_TEMPLATE. For the example given for
3630 DECL_TI_TEMPLATE, the DECL_TI_ARGS will be {int, double}. These
3631 are always the full set of arguments required to instantiate this
3632 declaration from the most general template specialized here. */
3633 #define DECL_TI_ARGS(NODE) TI_ARGS (DECL_TEMPLATE_INFO (NODE))
3634
3635 /* The TEMPLATE_DECL associated with NODE, a class type. Even if NODE
3636 will be generated from a partial specialization, the TEMPLATE_DECL
3637 referred to here will be the original template. For example,
3638 given:
3639
3640 template <typename T> struct S {};
3641 template <typename T> struct S<T*> {};
3642
3643 the CLASSTPYE_TI_TEMPLATE for S<int*> will be S, not the S<T*>.
3644
3645 For a member class template, CLASSTYPE_TI_TEMPLATE always refers to the
3646 partial instantiation rather than the primary template. CLASSTYPE_TI_ARGS
3647 are for the primary template if the partial instantiation isn't
3648 specialized, or for the explicit specialization if it is, e.g.
3649
3650 template <class T> class C { template <class U> class D; }
3651 template <> template <class U> class C<int>::D; */
3652 #define CLASSTYPE_TI_TEMPLATE(NODE) TI_TEMPLATE (CLASSTYPE_TEMPLATE_INFO (NODE))
3653 #define CLASSTYPE_TI_ARGS(NODE) TI_ARGS (CLASSTYPE_TEMPLATE_INFO (NODE))
3654
3655 /* For a template instantiation TYPE, returns the TYPE corresponding
3656 to the primary template. Otherwise returns TYPE itself. */
3657 #define CLASSTYPE_PRIMARY_TEMPLATE_TYPE(TYPE) \
3658 ((CLASSTYPE_USE_TEMPLATE ((TYPE)) \
3659 && !CLASSTYPE_TEMPLATE_SPECIALIZATION ((TYPE))) \
3660 ? TREE_TYPE (DECL_TEMPLATE_RESULT (DECL_PRIMARY_TEMPLATE \
3661 (CLASSTYPE_TI_TEMPLATE ((TYPE))))) \
3662 : (TYPE))
3663
3664 /* Like CLASS_TI_TEMPLATE, but also works for ENUMERAL_TYPEs. */
3665 #define TYPE_TI_TEMPLATE(NODE) \
3666 (TI_TEMPLATE (TYPE_TEMPLATE_INFO (NODE)))
3667
3668 /* Like DECL_TI_ARGS, but for an ENUMERAL_, RECORD_, or UNION_TYPE. */
3669 #define TYPE_TI_ARGS(NODE) \
3670 (TI_ARGS (TYPE_TEMPLATE_INFO (NODE)))
3671
3672 #define INNERMOST_TEMPLATE_PARMS(NODE) TREE_VALUE (NODE)
3673
3674 /* Nonzero if NODE (a TEMPLATE_DECL) is a member template, in the
3675 sense of [temp.mem]. */
3676 #define DECL_MEMBER_TEMPLATE_P(NODE) \
3677 (DECL_LANG_FLAG_1 (TEMPLATE_DECL_CHECK (NODE)))
3678
3679 /* Nonzero if the NODE corresponds to the template parameters for a
3680 member template, whose inline definition is being processed after
3681 the class definition is complete. */
3682 #define TEMPLATE_PARMS_FOR_INLINE(NODE) TREE_LANG_FLAG_1 (NODE)
3683
3684 /* Determine if a declaration (PARM_DECL or FIELD_DECL) is a pack. */
3685 #define DECL_PACK_P(NODE) \
3686 (DECL_P (NODE) && PACK_EXPANSION_P (TREE_TYPE (NODE)))
3687
3688 /* Determines if NODE is an expansion of one or more parameter packs,
3689 e.g., a TYPE_PACK_EXPANSION or EXPR_PACK_EXPANSION. */
3690 #define PACK_EXPANSION_P(NODE) \
3691 (TREE_CODE (NODE) == TYPE_PACK_EXPANSION \
3692 || TREE_CODE (NODE) == EXPR_PACK_EXPANSION)
3693
3694 /* Extracts the type or expression pattern from a TYPE_PACK_EXPANSION or
3695 EXPR_PACK_EXPANSION. */
3696 #define PACK_EXPANSION_PATTERN(NODE) \
3697 (TREE_CODE (NODE) == TYPE_PACK_EXPANSION ? TREE_TYPE (NODE) \
3698 : TREE_OPERAND (NODE, 0))
3699
3700 /* Sets the type or expression pattern for a TYPE_PACK_EXPANSION or
3701 EXPR_PACK_EXPANSION. */
3702 #define SET_PACK_EXPANSION_PATTERN(NODE,VALUE) \
3703 if (TREE_CODE (NODE) == TYPE_PACK_EXPANSION) \
3704 TREE_TYPE (NODE) = VALUE; \
3705 else \
3706 TREE_OPERAND (NODE, 0) = VALUE
3707
3708 /* The list of parameter packs used in the PACK_EXPANSION_* node. The
3709 TREE_VALUE of each TREE_LIST contains the parameter packs. */
3710 #define PACK_EXPANSION_PARAMETER_PACKS(NODE) \
3711 *(TREE_CODE (NODE) == EXPR_PACK_EXPANSION \
3712 ? &TREE_OPERAND (NODE, 1) \
3713 : &TYPE_MIN_VALUE_RAW (TYPE_PACK_EXPANSION_CHECK (NODE)))
3714
3715 /* Any additional template args to be applied when substituting into
3716 the pattern, set by tsubst_pack_expansion for partial instantiations.
3717 If this is a TREE_LIST, the TREE_VALUE of the first element is the
3718 usual template argument TREE_VEC, and the TREE_PURPOSE of later elements
3719 are enclosing functions that provided function parameter packs we'll need
3720 to map appropriately. */
3721 #define PACK_EXPANSION_EXTRA_ARGS(NODE) \
3722 *(TREE_CODE (NODE) == TYPE_PACK_EXPANSION \
3723 ? &TYPE_MAX_VALUE_RAW (NODE) \
3724 : &TREE_OPERAND ((NODE), 2))
3725
3726 /* True iff this pack expansion is within a function context. */
3727 #define PACK_EXPANSION_LOCAL_P(NODE) TREE_LANG_FLAG_0 (NODE)
3728
3729 /* True iff this pack expansion is for sizeof.... */
3730 #define PACK_EXPANSION_SIZEOF_P(NODE) TREE_LANG_FLAG_1 (NODE)
3731
3732 /* True iff this pack expansion is for auto... in lambda init-capture. */
3733 #define PACK_EXPANSION_AUTO_P(NODE) TREE_LANG_FLAG_2 (NODE)
3734
3735 /* True iff the wildcard can match a template parameter pack. */
3736 #define WILDCARD_PACK_P(NODE) TREE_LANG_FLAG_0 (NODE)
3737
3738 /* Determine if this is an argument pack. */
3739 #define ARGUMENT_PACK_P(NODE) \
3740 (TREE_CODE (NODE) == TYPE_ARGUMENT_PACK \
3741 || TREE_CODE (NODE) == NONTYPE_ARGUMENT_PACK)
3742
3743 /* The arguments stored in an argument pack. Arguments are stored in a
3744 TREE_VEC, which may have length zero. */
3745 #define ARGUMENT_PACK_ARGS(NODE) \
3746 (TREE_CODE (NODE) == TYPE_ARGUMENT_PACK? TREE_TYPE (NODE) \
3747 : TREE_OPERAND (NODE, 0))
3748
3749 /* Set the arguments stored in an argument pack. VALUE must be a
3750 TREE_VEC. */
3751 #define SET_ARGUMENT_PACK_ARGS(NODE,VALUE) \
3752 if (TREE_CODE (NODE) == TYPE_ARGUMENT_PACK) \
3753 TREE_TYPE (NODE) = VALUE; \
3754 else \
3755 TREE_OPERAND (NODE, 0) = VALUE
3756
3757 /* Whether the argument pack is "incomplete", meaning that more
3758 arguments can still be deduced. Incomplete argument packs are only
3759 used when the user has provided an explicit template argument list
3760 for a variadic function template. Some of the explicit template
3761 arguments will be placed into the beginning of the argument pack,
3762 but additional arguments might still be deduced. */
3763 #define ARGUMENT_PACK_INCOMPLETE_P(NODE) \
3764 TREE_ADDRESSABLE (ARGUMENT_PACK_ARGS (NODE))
3765
3766 /* When ARGUMENT_PACK_INCOMPLETE_P, stores the explicit template
3767 arguments used to fill this pack. */
3768 #define ARGUMENT_PACK_EXPLICIT_ARGS(NODE) \
3769 TREE_TYPE (ARGUMENT_PACK_ARGS (NODE))
3770
3771 /* In an ARGUMENT_PACK_SELECT, the argument pack from which an
3772 argument will be selected. */
3773 #define ARGUMENT_PACK_SELECT_FROM_PACK(NODE) \
3774 (((struct tree_argument_pack_select *)ARGUMENT_PACK_SELECT_CHECK (NODE))->argument_pack)
3775
3776 /* In an ARGUMENT_PACK_SELECT, the index of the argument we want to
3777 select. */
3778 #define ARGUMENT_PACK_SELECT_INDEX(NODE) \
3779 (((struct tree_argument_pack_select *)ARGUMENT_PACK_SELECT_CHECK (NODE))->index)
3780
3781 #define FOLD_EXPR_CHECK(NODE) \
3782 TREE_CHECK4 (NODE, UNARY_LEFT_FOLD_EXPR, UNARY_RIGHT_FOLD_EXPR, \
3783 BINARY_LEFT_FOLD_EXPR, BINARY_RIGHT_FOLD_EXPR)
3784
3785 #define BINARY_FOLD_EXPR_CHECK(NODE) \
3786 TREE_CHECK2 (NODE, BINARY_LEFT_FOLD_EXPR, BINARY_RIGHT_FOLD_EXPR)
3787
3788 /* True if NODE is UNARY_FOLD_EXPR or a BINARY_FOLD_EXPR */
3789 #define FOLD_EXPR_P(NODE) \
3790 (TREE_CODE (NODE) == UNARY_LEFT_FOLD_EXPR \
3791 || TREE_CODE (NODE) == UNARY_RIGHT_FOLD_EXPR \
3792 || TREE_CODE (NODE) == BINARY_LEFT_FOLD_EXPR \
3793 || TREE_CODE (NODE) == BINARY_RIGHT_FOLD_EXPR)
3794
3795 /* True when NODE is a fold over a compound assignment operator. */
3796 #define FOLD_EXPR_MODIFY_P(NODE) \
3797 TREE_LANG_FLAG_0 (FOLD_EXPR_CHECK (NODE))
3798
3799 /* An INTEGER_CST containing the tree code of the folded operator. */
3800 #define FOLD_EXPR_OP(NODE) \
3801 TREE_OPERAND (FOLD_EXPR_CHECK (NODE), 0)
3802
3803 /* The expression containing an unexpanded parameter pack. */
3804 #define FOLD_EXPR_PACK(NODE) \
3805 TREE_OPERAND (FOLD_EXPR_CHECK (NODE), 1)
3806
3807 /* In a binary fold expression, the argument with no unexpanded
3808 parameter packs. */
3809 #define FOLD_EXPR_INIT(NODE) \
3810 TREE_OPERAND (BINARY_FOLD_EXPR_CHECK (NODE), 2)
3811
3812 /* In a FUNCTION_DECL, the saved auto-return pattern. */
3813 #define DECL_SAVED_AUTO_RETURN_TYPE(NODE) \
3814 (LANG_DECL_FN_CHECK (FUNCTION_DECL_CHECK (NODE)) \
3815 ->u.saved_auto_return_type)
3816
3817 /* True if NODE is an implicit INDIRECT_REF from convert_from_reference. */
3818 #define REFERENCE_REF_P(NODE) \
3819 (INDIRECT_REF_P (NODE) \
3820 && TREE_TYPE (TREE_OPERAND (NODE, 0)) \
3821 && TYPE_REF_P (TREE_TYPE (TREE_OPERAND ((NODE), 0))))
3822
3823 #define NEW_EXPR_USE_GLOBAL(NODE) \
3824 TREE_LANG_FLAG_0 (NEW_EXPR_CHECK (NODE))
3825 #define DELETE_EXPR_USE_GLOBAL(NODE) \
3826 TREE_LANG_FLAG_0 (DELETE_EXPR_CHECK (NODE))
3827 #define DELETE_EXPR_USE_VEC(NODE) \
3828 TREE_LANG_FLAG_1 (DELETE_EXPR_CHECK (NODE))
3829
3830 #define CALL_OR_AGGR_INIT_CHECK(NODE) \
3831 TREE_CHECK2 ((NODE), CALL_EXPR, AGGR_INIT_EXPR)
3832
3833 /* Indicates that this is a non-dependent COMPOUND_EXPR which will
3834 resolve to a function call. */
3835 #define COMPOUND_EXPR_OVERLOADED(NODE) \
3836 TREE_LANG_FLAG_0 (COMPOUND_EXPR_CHECK (NODE))
3837
3838 /* In a CALL_EXPR appearing in a template, true if Koenig lookup
3839 should be performed at instantiation time. */
3840 #define KOENIG_LOOKUP_P(NODE) TREE_LANG_FLAG_0 (CALL_EXPR_CHECK (NODE))
3841
3842 /* In a CALL_EXPR, true for allocator calls from new or delete
3843 expressions. */
3844 #define CALL_FROM_NEW_OR_DELETE_P(NODE) \
3845 TREE_LANG_FLAG_2 (CALL_EXPR_CHECK (NODE))
3846
3847 /* True if the arguments to NODE should be evaluated in left-to-right
3848 order regardless of PUSH_ARGS_REVERSED. */
3849 #define CALL_EXPR_ORDERED_ARGS(NODE) \
3850 TREE_LANG_FLAG_3 (CALL_OR_AGGR_INIT_CHECK (NODE))
3851
3852 /* True if the arguments to NODE should be evaluated in right-to-left
3853 order regardless of PUSH_ARGS_REVERSED. */
3854 #define CALL_EXPR_REVERSE_ARGS(NODE) \
3855 TREE_LANG_FLAG_5 (CALL_OR_AGGR_INIT_CHECK (NODE))
3856
3857 /* True if CALL_EXPR was written as an operator expression, not a function
3858 call. */
3859 #define CALL_EXPR_OPERATOR_SYNTAX(NODE) \
3860 TREE_LANG_FLAG_6 (CALL_OR_AGGR_INIT_CHECK (NODE))
3861
3862 /* Indicates whether a string literal has been parenthesized. Such
3863 usages are disallowed in certain circumstances. */
3864
3865 #define PAREN_STRING_LITERAL_P(NODE) \
3866 TREE_LANG_FLAG_0 (STRING_CST_CHECK (NODE))
3867
3868 /* Indicates whether a COMPONENT_REF or a SCOPE_REF has been parenthesized, or
3869 an INDIRECT_REF comes from parenthesizing a _DECL. Currently only set some
3870 of the time in C++14 mode. */
3871
3872 #define REF_PARENTHESIZED_P(NODE) \
3873 TREE_LANG_FLAG_2 (TREE_CHECK4 ((NODE), COMPONENT_REF, INDIRECT_REF, SCOPE_REF, VIEW_CONVERT_EXPR))
3874
3875 /* Nonzero if this AGGR_INIT_EXPR provides for initialization via a
3876 constructor call, rather than an ordinary function call. */
3877 #define AGGR_INIT_VIA_CTOR_P(NODE) \
3878 TREE_LANG_FLAG_0 (AGGR_INIT_EXPR_CHECK (NODE))
3879
3880 /* Nonzero if expanding this AGGR_INIT_EXPR should first zero-initialize
3881 the object. */
3882 #define AGGR_INIT_ZERO_FIRST(NODE) \
3883 TREE_LANG_FLAG_2 (AGGR_INIT_EXPR_CHECK (NODE))
3884
3885 /* Nonzero means that the call is the jump from a thunk to the
3886 thunked-to function. */
3887 #define AGGR_INIT_FROM_THUNK_P(NODE) \
3888 (AGGR_INIT_EXPR_CHECK (NODE)->base.protected_flag)
3889
3890 /* AGGR_INIT_EXPR accessors. These are equivalent to the CALL_EXPR
3891 accessors, except for AGGR_INIT_EXPR_SLOT (which takes the place of
3892 CALL_EXPR_STATIC_CHAIN). */
3893
3894 #define AGGR_INIT_EXPR_FN(NODE) TREE_OPERAND (AGGR_INIT_EXPR_CHECK (NODE), 1)
3895 #define AGGR_INIT_EXPR_SLOT(NODE) \
3896 TREE_OPERAND (AGGR_INIT_EXPR_CHECK (NODE), 2)
3897 #define AGGR_INIT_EXPR_ARG(NODE, I) \
3898 TREE_OPERAND (AGGR_INIT_EXPR_CHECK (NODE), (I) + 3)
3899 #define aggr_init_expr_nargs(NODE) (VL_EXP_OPERAND_LENGTH(NODE) - 3)
3900
3901 /* AGGR_INIT_EXPR_ARGP returns a pointer to the argument vector for NODE.
3902 We can't use &AGGR_INIT_EXPR_ARG (NODE, 0) because that will complain if
3903 the argument count is zero when checking is enabled. Instead, do
3904 the pointer arithmetic to advance past the 3 fixed operands in a
3905 AGGR_INIT_EXPR. That produces a valid pointer to just past the end of
3906 the operand array, even if it's not valid to dereference it. */
3907 #define AGGR_INIT_EXPR_ARGP(NODE) \
3908 (&(TREE_OPERAND (AGGR_INIT_EXPR_CHECK (NODE), 0)) + 3)
3909
3910 /* Abstract iterators for AGGR_INIT_EXPRs. */
3911
3912 /* Structure containing iterator state. */
3913 struct aggr_init_expr_arg_iterator {
3914 tree t; /* the aggr_init_expr */
3915 int n; /* argument count */
3916 int i; /* next argument index */
3917 };
3918
3919 /* Initialize the abstract argument list iterator object ITER with the
3920 arguments from AGGR_INIT_EXPR node EXP. */
3921 inline void
init_aggr_init_expr_arg_iterator(tree exp,aggr_init_expr_arg_iterator * iter)3922 init_aggr_init_expr_arg_iterator (tree exp,
3923 aggr_init_expr_arg_iterator *iter)
3924 {
3925 iter->t = exp;
3926 iter->n = aggr_init_expr_nargs (exp);
3927 iter->i = 0;
3928 }
3929
3930 /* Return the next argument from abstract argument list iterator object ITER,
3931 and advance its state. Return NULL_TREE if there are no more arguments. */
3932 inline tree
next_aggr_init_expr_arg(aggr_init_expr_arg_iterator * iter)3933 next_aggr_init_expr_arg (aggr_init_expr_arg_iterator *iter)
3934 {
3935 tree result;
3936 if (iter->i >= iter->n)
3937 return NULL_TREE;
3938 result = AGGR_INIT_EXPR_ARG (iter->t, iter->i);
3939 iter->i++;
3940 return result;
3941 }
3942
3943 /* Initialize the abstract argument list iterator object ITER, then advance
3944 past and return the first argument. Useful in for expressions, e.g.
3945 for (arg = first_aggr_init_expr_arg (exp, &iter); arg;
3946 arg = next_aggr_init_expr_arg (&iter)) */
3947 inline tree
first_aggr_init_expr_arg(tree exp,aggr_init_expr_arg_iterator * iter)3948 first_aggr_init_expr_arg (tree exp, aggr_init_expr_arg_iterator *iter)
3949 {
3950 init_aggr_init_expr_arg_iterator (exp, iter);
3951 return next_aggr_init_expr_arg (iter);
3952 }
3953
3954 /* Test whether there are more arguments in abstract argument list iterator
3955 ITER, without changing its state. */
3956 inline bool
more_aggr_init_expr_args_p(const aggr_init_expr_arg_iterator * iter)3957 more_aggr_init_expr_args_p (const aggr_init_expr_arg_iterator *iter)
3958 {
3959 return (iter->i < iter->n);
3960 }
3961
3962 /* Iterate through each argument ARG of AGGR_INIT_EXPR CALL, using variable
3963 ITER (of type aggr_init_expr_arg_iterator) to hold the iteration state. */
3964 #define FOR_EACH_AGGR_INIT_EXPR_ARG(arg, iter, call) \
3965 for ((arg) = first_aggr_init_expr_arg ((call), &(iter)); (arg); \
3966 (arg) = next_aggr_init_expr_arg (&(iter)))
3967
3968 /* VEC_INIT_EXPR accessors. */
3969 #define VEC_INIT_EXPR_SLOT(NODE) TREE_OPERAND (VEC_INIT_EXPR_CHECK (NODE), 0)
3970 #define VEC_INIT_EXPR_INIT(NODE) TREE_OPERAND (VEC_INIT_EXPR_CHECK (NODE), 1)
3971
3972 /* Indicates that a VEC_INIT_EXPR is a potential constant expression.
3973 Only set when the current function is constexpr. */
3974 #define VEC_INIT_EXPR_IS_CONSTEXPR(NODE) \
3975 TREE_LANG_FLAG_0 (VEC_INIT_EXPR_CHECK (NODE))
3976
3977 /* Indicates that a VEC_INIT_EXPR is expressing value-initialization. */
3978 #define VEC_INIT_EXPR_VALUE_INIT(NODE) \
3979 TREE_LANG_FLAG_1 (VEC_INIT_EXPR_CHECK (NODE))
3980
3981 /* The condition under which this MUST_NOT_THROW_EXPR actually blocks
3982 exceptions. NULL_TREE means 'true'. */
3983 #define MUST_NOT_THROW_COND(NODE) \
3984 TREE_OPERAND (MUST_NOT_THROW_EXPR_CHECK (NODE), 1)
3985
3986 /* The TYPE_MAIN_DECL for a class template type is a TYPE_DECL, not a
3987 TEMPLATE_DECL. This macro determines whether or not a given class
3988 type is really a template type, as opposed to an instantiation or
3989 specialization of one. */
3990 #define CLASSTYPE_IS_TEMPLATE(NODE) \
3991 (CLASSTYPE_TEMPLATE_INFO (NODE) \
3992 && !CLASSTYPE_USE_TEMPLATE (NODE) \
3993 && PRIMARY_TEMPLATE_P (CLASSTYPE_TI_TEMPLATE (NODE)))
3994
3995 /* The name used by the user to name the typename type. Typically,
3996 this is an IDENTIFIER_NODE, and the same as the DECL_NAME on the
3997 corresponding TYPE_DECL. However, this may also be a
3998 TEMPLATE_ID_EXPR if we had something like `typename X::Y<T>'. */
3999 #define TYPENAME_TYPE_FULLNAME(NODE) \
4000 (TYPE_VALUES_RAW (TYPENAME_TYPE_CHECK (NODE)))
4001
4002 /* True if a TYPENAME_TYPE was declared as an "enum". */
4003 #define TYPENAME_IS_ENUM_P(NODE) \
4004 (TREE_LANG_FLAG_0 (TYPENAME_TYPE_CHECK (NODE)))
4005
4006 /* True if a TYPENAME_TYPE was declared as a "class", "struct", or
4007 "union". */
4008 #define TYPENAME_IS_CLASS_P(NODE) \
4009 (TREE_LANG_FLAG_1 (TYPENAME_TYPE_CHECK (NODE)))
4010
4011 /* True if a TYPENAME_TYPE is in the process of being resolved. */
4012 #define TYPENAME_IS_RESOLVING_P(NODE) \
4013 (TREE_LANG_FLAG_2 (TYPENAME_TYPE_CHECK (NODE)))
4014
4015 /* [class.virtual]
4016
4017 A class that declares or inherits a virtual function is called a
4018 polymorphic class. */
4019 #define TYPE_POLYMORPHIC_P(NODE) (TREE_LANG_FLAG_2 (NODE))
4020
4021 /* Nonzero if this class has a virtual function table pointer. */
4022 #define TYPE_CONTAINS_VPTR_P(NODE) \
4023 (TYPE_POLYMORPHIC_P (NODE) || CLASSTYPE_VBASECLASSES (NODE))
4024
4025 /* Nonzero if NODE is a FUNCTION_DECL (for a function with global
4026 scope) declared in a local scope. */
4027 #define DECL_LOCAL_FUNCTION_P(NODE) \
4028 DECL_LANG_FLAG_0 (FUNCTION_DECL_CHECK (NODE))
4029
4030 /* Nonzero if NODE is the target for genericization of 'break' stmts. */
4031 #define LABEL_DECL_BREAK(NODE) \
4032 DECL_LANG_FLAG_0 (LABEL_DECL_CHECK (NODE))
4033
4034 /* Nonzero if NODE is the target for genericization of 'continue' stmts. */
4035 #define LABEL_DECL_CONTINUE(NODE) \
4036 DECL_LANG_FLAG_1 (LABEL_DECL_CHECK (NODE))
4037
4038 /* Nonzero if NODE is the target for genericization of 'return' stmts
4039 in constructors/destructors of targetm.cxx.cdtor_returns_this targets. */
4040 #define LABEL_DECL_CDTOR(NODE) \
4041 DECL_LANG_FLAG_2 (LABEL_DECL_CHECK (NODE))
4042
4043 /* True if NODE was declared with auto in its return type, but it has
4044 started compilation and so the return type might have been changed by
4045 return type deduction; its declared return type should be found in
4046 DECL_SAVED_AUTO_RETURN_TYPE (NODE). */
4047 #define FNDECL_USED_AUTO(NODE) \
4048 TREE_LANG_FLAG_2 (FUNCTION_DECL_CHECK (NODE))
4049
4050 /* Nonzero if NODE is a DECL which we know about but which has not
4051 been explicitly declared, such as a built-in function or a friend
4052 declared inside a class. In the latter case DECL_HIDDEN_FRIEND_P
4053 will be set. */
4054 #define DECL_ANTICIPATED(NODE) \
4055 (DECL_LANG_SPECIFIC (TYPE_FUNCTION_OR_TEMPLATE_DECL_CHECK (NODE)) \
4056 ->u.base.anticipated_p)
4057
4058 /* Is DECL NODE a hidden name? */
4059 #define DECL_HIDDEN_P(NODE) \
4060 (DECL_LANG_SPECIFIC (NODE) && TYPE_FUNCTION_OR_TEMPLATE_DECL_P (NODE) \
4061 && DECL_ANTICIPATED (NODE))
4062
4063 /* True if this is a hidden class type. */
4064 #define TYPE_HIDDEN_P(NODE) \
4065 (DECL_LANG_SPECIFIC (TYPE_NAME (NODE)) \
4066 && DECL_ANTICIPATED (TYPE_NAME (NODE)))
4067
4068 /* True for artificial decls added for OpenMP privatized non-static
4069 data members. */
4070 #define DECL_OMP_PRIVATIZED_MEMBER(NODE) \
4071 (DECL_LANG_SPECIFIC (VAR_DECL_CHECK (NODE))->u.base.anticipated_p)
4072
4073 /* Nonzero if NODE is a FUNCTION_DECL which was declared as a friend
4074 within a class but has not been declared in the surrounding scope.
4075 The function is invisible except via argument dependent lookup. */
4076 #define DECL_HIDDEN_FRIEND_P(NODE) \
4077 (LANG_DECL_FN_CHECK (DECL_COMMON_CHECK (NODE))->hidden_friend_p)
4078
4079 /* Nonzero if NODE is an artificial FUNCTION_DECL for
4080 #pragma omp declare reduction. */
4081 #define DECL_OMP_DECLARE_REDUCTION_P(NODE) \
4082 (LANG_DECL_FN_CHECK (DECL_COMMON_CHECK (NODE))->omp_declare_reduction_p)
4083
4084 /* Nonzero if DECL has been declared threadprivate by
4085 #pragma omp threadprivate. */
4086 #define CP_DECL_THREADPRIVATE_P(DECL) \
4087 (DECL_LANG_SPECIFIC (VAR_DECL_CHECK (DECL))->u.base.threadprivate_or_deleted_p)
4088
4089 /* Nonzero if NODE is a VAR_DECL which has been declared inline. */
4090 #define DECL_VAR_DECLARED_INLINE_P(NODE) \
4091 (DECL_LANG_SPECIFIC (VAR_DECL_CHECK (NODE)) \
4092 ? DECL_LANG_SPECIFIC (NODE)->u.base.var_declared_inline_p \
4093 : false)
4094 #define SET_DECL_VAR_DECLARED_INLINE_P(NODE) \
4095 (DECL_LANG_SPECIFIC (VAR_DECL_CHECK (NODE))->u.base.var_declared_inline_p \
4096 = true)
4097
4098 /* True if NODE is a constant variable with a value-dependent initializer. */
4099 #define DECL_DEPENDENT_INIT_P(NODE) \
4100 (DECL_LANG_SPECIFIC (VAR_DECL_CHECK (NODE)) \
4101 && DECL_LANG_SPECIFIC (NODE)->u.base.dependent_init_p)
4102 #define SET_DECL_DEPENDENT_INIT_P(NODE, X) \
4103 (DECL_LANG_SPECIFIC (VAR_DECL_CHECK (NODE))->u.base.dependent_init_p = (X))
4104
4105 /* Nonzero if NODE is an artificial VAR_DECL for a C++17 structured binding
4106 declaration or one of VAR_DECLs for the user identifiers in it. */
4107 #define DECL_DECOMPOSITION_P(NODE) \
4108 (VAR_P (NODE) && DECL_LANG_SPECIFIC (NODE) \
4109 ? DECL_LANG_SPECIFIC (NODE)->u.base.selector == lds_decomp \
4110 : false)
4111
4112 /* The underlying artificial VAR_DECL for structured binding. */
4113 #define DECL_DECOMP_BASE(NODE) \
4114 (LANG_DECL_DECOMP_CHECK (NODE)->base)
4115
4116 /* Nonzero if NODE is an inline VAR_DECL. In C++17, static data members
4117 declared with constexpr specifier are implicitly inline variables. */
4118 #define DECL_INLINE_VAR_P(NODE) \
4119 (DECL_VAR_DECLARED_INLINE_P (NODE) \
4120 || (cxx_dialect >= cxx17 \
4121 && DECL_DECLARED_CONSTEXPR_P (NODE) \
4122 && DECL_CLASS_SCOPE_P (NODE)))
4123
4124 /* Nonzero if DECL was declared with '= delete'. */
4125 #define DECL_DELETED_FN(DECL) \
4126 (LANG_DECL_FN_CHECK (DECL)->min.base.threadprivate_or_deleted_p)
4127
4128 /* Nonzero if DECL was declared with '= default' (maybe implicitly). */
4129 #define DECL_DEFAULTED_FN(DECL) \
4130 (LANG_DECL_FN_CHECK (DECL)->defaulted_p)
4131
4132 /* Nonzero if DECL is explicitly defaulted in the class body. */
4133 #define DECL_DEFAULTED_IN_CLASS_P(DECL) \
4134 (DECL_DEFAULTED_FN (DECL) && DECL_INITIALIZED_IN_CLASS_P (DECL))
4135 /* Nonzero if DECL was defaulted outside the class body. */
4136 #define DECL_DEFAULTED_OUTSIDE_CLASS_P(DECL) \
4137 (DECL_DEFAULTED_FN (DECL) \
4138 && !(DECL_ARTIFICIAL (DECL) || DECL_INITIALIZED_IN_CLASS_P (DECL)))
4139
4140 /* Record whether a typedef for type `int' was actually `signed int'. */
4141 #define C_TYPEDEF_EXPLICITLY_SIGNED(EXP) DECL_LANG_FLAG_1 (EXP)
4142
4143 /* Returns nonzero if DECL has external linkage, as specified by the
4144 language standard. (This predicate may hold even when the
4145 corresponding entity is not actually given external linkage in the
4146 object file; see decl_linkage for details.) */
4147 #define DECL_EXTERNAL_LINKAGE_P(DECL) \
4148 (decl_linkage (DECL) == lk_external)
4149
4150 /* Keep these codes in ascending code order. */
4151
4152 #define INTEGRAL_CODE_P(CODE) \
4153 ((CODE) == ENUMERAL_TYPE \
4154 || (CODE) == BOOLEAN_TYPE \
4155 || (CODE) == INTEGER_TYPE)
4156
4157 /* [basic.fundamental]
4158
4159 Types bool, char, wchar_t, and the signed and unsigned integer types
4160 are collectively called integral types.
4161
4162 Note that INTEGRAL_TYPE_P, as defined in tree.h, allows enumeration
4163 types as well, which is incorrect in C++. Keep these checks in
4164 ascending code order. */
4165 #define CP_INTEGRAL_TYPE_P(TYPE) \
4166 (TREE_CODE (TYPE) == BOOLEAN_TYPE \
4167 || TREE_CODE (TYPE) == INTEGER_TYPE)
4168
4169 /* Returns true if TYPE is an integral or enumeration name. Keep
4170 these checks in ascending code order. */
4171 #define INTEGRAL_OR_ENUMERATION_TYPE_P(TYPE) \
4172 (TREE_CODE (TYPE) == ENUMERAL_TYPE || CP_INTEGRAL_TYPE_P (TYPE))
4173
4174 /* Returns true if TYPE is an integral or unscoped enumeration type. */
4175 #define INTEGRAL_OR_UNSCOPED_ENUMERATION_TYPE_P(TYPE) \
4176 (UNSCOPED_ENUM_P (TYPE) || CP_INTEGRAL_TYPE_P (TYPE))
4177
4178 /* True if the class type TYPE is a literal type. */
4179 #define CLASSTYPE_LITERAL_P(TYPE) \
4180 (LANG_TYPE_CLASS_CHECK (TYPE)->is_literal)
4181
4182 /* [basic.fundamental]
4183
4184 Integral and floating types are collectively called arithmetic
4185 types.
4186
4187 As a GNU extension, we also accept complex types.
4188
4189 Keep these checks in ascending code order. */
4190 #define ARITHMETIC_TYPE_P(TYPE) \
4191 (CP_INTEGRAL_TYPE_P (TYPE) \
4192 || TREE_CODE (TYPE) == REAL_TYPE \
4193 || TREE_CODE (TYPE) == COMPLEX_TYPE)
4194
4195 /* True iff TYPE is cv decltype(nullptr). */
4196 #define NULLPTR_TYPE_P(TYPE) (TREE_CODE (TYPE) == NULLPTR_TYPE)
4197
4198 /* [basic.types]
4199
4200 Arithmetic types, enumeration types, pointer types,
4201 pointer-to-member types, and std::nullptr_t are collectively called
4202 scalar types.
4203
4204 Keep these checks in ascending code order. */
4205 #define SCALAR_TYPE_P(TYPE) \
4206 (TYPE_PTRDATAMEM_P (TYPE) \
4207 || TREE_CODE (TYPE) == ENUMERAL_TYPE \
4208 || ARITHMETIC_TYPE_P (TYPE) \
4209 || TYPE_PTR_P (TYPE) \
4210 || TYPE_PTRMEMFUNC_P (TYPE) \
4211 || NULLPTR_TYPE_P (TYPE))
4212
4213 /* Determines whether this type is a C++0x scoped enumeration
4214 type. Scoped enumerations types are introduced via "enum class" or
4215 "enum struct", e.g.,
4216
4217 enum class Color {
4218 Red, Green, Blue
4219 };
4220
4221 Scoped enumeration types are different from normal (unscoped)
4222 enumeration types in several ways:
4223
4224 - The enumerators of a scoped enumeration type are only available
4225 within the scope of the enumeration type and not in the
4226 enclosing scope. For example, the Red color can be referred to
4227 with "Color::Red" but not "Red".
4228
4229 - Scoped enumerators and enumerations do not implicitly convert
4230 to integers or 'bool'.
4231
4232 - The underlying type of the enum is well-defined. */
4233 #define SCOPED_ENUM_P(TYPE) \
4234 (TREE_CODE (TYPE) == ENUMERAL_TYPE && ENUM_IS_SCOPED (TYPE))
4235
4236 /* Determine whether this is an unscoped enumeration type. */
4237 #define UNSCOPED_ENUM_P(TYPE) \
4238 (TREE_CODE (TYPE) == ENUMERAL_TYPE && !ENUM_IS_SCOPED (TYPE))
4239
4240 /* Set the flag indicating whether an ENUMERAL_TYPE is a C++0x scoped
4241 enumeration type (1) or a normal (unscoped) enumeration type
4242 (0). */
4243 #define SET_SCOPED_ENUM_P(TYPE, VAL) \
4244 (ENUM_IS_SCOPED (TYPE) = (VAL))
4245
4246 #define SET_OPAQUE_ENUM_P(TYPE, VAL) \
4247 (ENUM_IS_OPAQUE (TYPE) = (VAL))
4248
4249 #define OPAQUE_ENUM_P(TYPE) \
4250 (TREE_CODE (TYPE) == ENUMERAL_TYPE && ENUM_IS_OPAQUE (TYPE))
4251
4252 /* Determines whether an ENUMERAL_TYPE has an explicit
4253 underlying type. */
4254 #define ENUM_FIXED_UNDERLYING_TYPE_P(NODE) (TYPE_LANG_FLAG_5 (NODE))
4255
4256 /* Returns the underlying type of the given enumeration type. The
4257 underlying type is determined in different ways, depending on the
4258 properties of the enum:
4259
4260 - In C++0x, the underlying type can be explicitly specified, e.g.,
4261
4262 enum E1 : char { ... } // underlying type is char
4263
4264 - In a C++0x scoped enumeration, the underlying type is int
4265 unless otherwises specified:
4266
4267 enum class E2 { ... } // underlying type is int
4268
4269 - Otherwise, the underlying type is determined based on the
4270 values of the enumerators. In this case, the
4271 ENUM_UNDERLYING_TYPE will not be set until after the definition
4272 of the enumeration is completed by finish_enum. */
4273 #define ENUM_UNDERLYING_TYPE(TYPE) \
4274 TREE_TYPE (ENUMERAL_TYPE_CHECK (TYPE))
4275
4276 /* [dcl.init.aggr]
4277
4278 An aggregate is an array or a class with no user-provided
4279 constructors, no brace-or-equal-initializers for non-static data
4280 members, no private or protected non-static data members, no
4281 base classes, and no virtual functions.
4282
4283 As an extension, we also treat vectors as aggregates. Keep these
4284 checks in ascending code order. */
4285 #define CP_AGGREGATE_TYPE_P(TYPE) \
4286 (gnu_vector_type_p (TYPE) \
4287 || TREE_CODE (TYPE) == ARRAY_TYPE \
4288 || (CLASS_TYPE_P (TYPE) && COMPLETE_TYPE_P (TYPE) && !CLASSTYPE_NON_AGGREGATE (TYPE)))
4289
4290 /* Nonzero for a class type means that the class type has a
4291 user-declared constructor. */
4292 #define TYPE_HAS_USER_CONSTRUCTOR(NODE) (TYPE_LANG_FLAG_1 (NODE))
4293
4294 /* Nonzero means that the FUNCTION_TYPE or METHOD_TYPE has a
4295 late-specified return type. */
4296 #define TYPE_HAS_LATE_RETURN_TYPE(NODE) \
4297 (TYPE_LANG_FLAG_2 (FUNC_OR_METHOD_CHECK (NODE)))
4298
4299 /* When appearing in an INDIRECT_REF, it means that the tree structure
4300 underneath is actually a call to a constructor. This is needed
4301 when the constructor must initialize local storage (which can
4302 be automatically destroyed), rather than allowing it to allocate
4303 space from the heap.
4304
4305 When appearing in a SAVE_EXPR, it means that underneath
4306 is a call to a constructor.
4307
4308 When appearing in a CONSTRUCTOR, the expression is a
4309 compound literal.
4310
4311 When appearing in a FIELD_DECL, it means that this field
4312 has been duly initialized in its constructor. */
4313 #define TREE_HAS_CONSTRUCTOR(NODE) (TREE_LANG_FLAG_4 (NODE))
4314
4315 /* True if NODE is a brace-enclosed initializer. */
4316 #define BRACE_ENCLOSED_INITIALIZER_P(NODE) \
4317 (TREE_CODE (NODE) == CONSTRUCTOR && TREE_TYPE (NODE) == init_list_type_node)
4318
4319 /* True if NODE is a compound-literal, i.e., a brace-enclosed
4320 initializer cast to a particular type. */
4321 #define COMPOUND_LITERAL_P(NODE) \
4322 (TREE_CODE (NODE) == CONSTRUCTOR && TREE_HAS_CONSTRUCTOR (NODE))
4323
4324 #define EMPTY_CONSTRUCTOR_P(NODE) (TREE_CODE (NODE) == CONSTRUCTOR \
4325 && vec_safe_is_empty(CONSTRUCTOR_ELTS(NODE))\
4326 && !TREE_HAS_CONSTRUCTOR (NODE))
4327
4328 /* True if NODE is a init-list used as a direct-initializer, i.e.
4329 B b{1,2}, not B b({1,2}) or B b = {1,2}. */
4330 #define CONSTRUCTOR_IS_DIRECT_INIT(NODE) (TREE_LANG_FLAG_0 (CONSTRUCTOR_CHECK (NODE)))
4331
4332 /* True if this CONSTRUCTOR is instantiation-dependent and needs to be
4333 substituted. */
4334 #define CONSTRUCTOR_IS_DEPENDENT(NODE) \
4335 (TREE_LANG_FLAG_1 (CONSTRUCTOR_CHECK (NODE)))
4336
4337 /* True if this CONSTRUCTOR should not be used as a variable initializer
4338 because it was loaded from a constexpr variable with mutable fields. */
4339 #define CONSTRUCTOR_MUTABLE_POISON(NODE) \
4340 (TREE_LANG_FLAG_2 (CONSTRUCTOR_CHECK (NODE)))
4341
4342 /* True if this typed CONSTRUCTOR represents C99 compound-literal syntax rather
4343 than C++11 functional cast syntax. */
4344 #define CONSTRUCTOR_C99_COMPOUND_LITERAL(NODE) \
4345 (TREE_LANG_FLAG_3 (CONSTRUCTOR_CHECK (NODE)))
4346
4347 /* True if this CONSTRUCTOR contains PLACEHOLDER_EXPRs referencing the
4348 CONSTRUCTOR's type not nested inside another CONSTRUCTOR marked with
4349 CONSTRUCTOR_PLACEHOLDER_BOUNDARY. */
4350 #define CONSTRUCTOR_PLACEHOLDER_BOUNDARY(NODE) \
4351 (TREE_LANG_FLAG_5 (CONSTRUCTOR_CHECK (NODE)))
4352
4353 #define DIRECT_LIST_INIT_P(NODE) \
4354 (BRACE_ENCLOSED_INITIALIZER_P (NODE) && CONSTRUCTOR_IS_DIRECT_INIT (NODE))
4355
4356 /* True if this is a designated initializer (when we allow initializer-clauses
4357 mixed with designated-initializer-clauses set whenever there is at least
4358 one designated-initializer-clause), or a C99 designator. */
4359 #define CONSTRUCTOR_IS_DESIGNATED_INIT(NODE) \
4360 (TREE_LANG_FLAG_6 (CONSTRUCTOR_CHECK (NODE)))
4361
4362 /* True if this CONSTRUCTOR comes from a parenthesized list of values, e.g.
4363 A(1, 2, 3). */
4364 #define CONSTRUCTOR_IS_PAREN_INIT(NODE) \
4365 (CONSTRUCTOR_CHECK(NODE)->base.private_flag)
4366
4367 /* True if NODE represents a conversion for direct-initialization in a
4368 template. Set by perform_implicit_conversion_flags. */
4369 #define IMPLICIT_CONV_EXPR_DIRECT_INIT(NODE) \
4370 (TREE_LANG_FLAG_0 (IMPLICIT_CONV_EXPR_CHECK (NODE)))
4371
4372 /* True if NODE represents a dependent conversion of a non-type template
4373 argument. Set by maybe_convert_nontype_argument. */
4374 #define IMPLICIT_CONV_EXPR_NONTYPE_ARG(NODE) \
4375 (TREE_LANG_FLAG_1 (IMPLICIT_CONV_EXPR_CHECK (NODE)))
4376
4377 /* True if NODE represents a conversion for braced-init-list in a
4378 template. Set by perform_implicit_conversion_flags. */
4379 #define IMPLICIT_CONV_EXPR_BRACED_INIT(NODE) \
4380 (TREE_LANG_FLAG_2 (IMPLICIT_CONV_EXPR_CHECK (NODE)))
4381
4382 /* Nonzero means that an object of this type cannot be initialized using
4383 an initializer list. */
4384 #define CLASSTYPE_NON_AGGREGATE(NODE) \
4385 (LANG_TYPE_CLASS_CHECK (NODE)->non_aggregate)
4386 #define TYPE_NON_AGGREGATE_CLASS(NODE) \
4387 (CLASS_TYPE_P (NODE) && CLASSTYPE_NON_AGGREGATE (NODE))
4388
4389 /* Nonzero if there is a non-trivial X::op=(cv X&) for this class. */
4390 #define TYPE_HAS_COMPLEX_COPY_ASSIGN(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->has_complex_copy_assign)
4391
4392 /* Nonzero if there is a non-trivial X::X(cv X&) for this class. */
4393 #define TYPE_HAS_COMPLEX_COPY_CTOR(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->has_complex_copy_ctor)
4394
4395 /* Nonzero if there is a non-trivial X::op=(X&&) for this class. */
4396 #define TYPE_HAS_COMPLEX_MOVE_ASSIGN(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->has_complex_move_assign)
4397
4398 /* Nonzero if there is a non-trivial X::X(X&&) for this class. */
4399 #define TYPE_HAS_COMPLEX_MOVE_CTOR(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->has_complex_move_ctor)
4400
4401 /* Nonzero if there is no trivial default constructor for this class. */
4402 #define TYPE_HAS_COMPLEX_DFLT(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->has_complex_dflt)
4403
4404 /* Nonzero if TYPE has a trivial destructor. From [class.dtor]:
4405
4406 A destructor is trivial if it is an implicitly declared
4407 destructor and if:
4408
4409 - all of the direct base classes of its class have trivial
4410 destructors,
4411
4412 - for all of the non-static data members of its class that are
4413 of class type (or array thereof), each such class has a
4414 trivial destructor. */
4415 #define TYPE_HAS_TRIVIAL_DESTRUCTOR(NODE) \
4416 (!TYPE_HAS_NONTRIVIAL_DESTRUCTOR (NODE))
4417
4418 /* Nonzero for _TYPE node means that this type does not have a trivial
4419 destructor. Therefore, destroying an object of this type will
4420 involve a call to a destructor. This can apply to objects of
4421 ARRAY_TYPE if the type of the elements needs a destructor. */
4422 #define TYPE_HAS_NONTRIVIAL_DESTRUCTOR(NODE) \
4423 (TYPE_LANG_FLAG_4 (NODE))
4424
4425 /* Nonzero for class type means that the default constructor is trivial. */
4426 #define TYPE_HAS_TRIVIAL_DFLT(NODE) \
4427 (TYPE_HAS_DEFAULT_CONSTRUCTOR (NODE) && ! TYPE_HAS_COMPLEX_DFLT (NODE))
4428
4429 /* Nonzero for class type means that copy initialization of this type can use
4430 a bitwise copy. */
4431 #define TYPE_HAS_TRIVIAL_COPY_CTOR(NODE) \
4432 (TYPE_HAS_COPY_CTOR (NODE) && ! TYPE_HAS_COMPLEX_COPY_CTOR (NODE))
4433
4434 /* Nonzero for class type means that assignment of this type can use
4435 a bitwise copy. */
4436 #define TYPE_HAS_TRIVIAL_COPY_ASSIGN(NODE) \
4437 (TYPE_HAS_COPY_ASSIGN (NODE) && ! TYPE_HAS_COMPLEX_COPY_ASSIGN (NODE))
4438
4439 /* Returns true if NODE is a pointer-to-data-member. */
4440 #define TYPE_PTRDATAMEM_P(NODE) \
4441 (TREE_CODE (NODE) == OFFSET_TYPE)
4442
4443 /* Returns true if NODE is a pointer. */
4444 #define TYPE_PTR_P(NODE) \
4445 (TREE_CODE (NODE) == POINTER_TYPE)
4446
4447 /* Returns true if NODE is a reference. */
4448 #define TYPE_REF_P(NODE) \
4449 (TREE_CODE (NODE) == REFERENCE_TYPE)
4450
4451 /* Returns true if NODE is a pointer or a reference. */
4452 #define INDIRECT_TYPE_P(NODE) \
4453 (TYPE_PTR_P (NODE) || TYPE_REF_P (NODE))
4454
4455 /* Returns true if NODE is an object type:
4456
4457 [basic.types]
4458
4459 An object type is a (possibly cv-qualified) type that is not a
4460 function type, not a reference type, and not a void type.
4461
4462 Keep these checks in ascending order, for speed. */
4463 #define TYPE_OBJ_P(NODE) \
4464 (!TYPE_REF_P (NODE) \
4465 && !VOID_TYPE_P (NODE) \
4466 && !FUNC_OR_METHOD_TYPE_P (NODE))
4467
4468 /* Returns true if NODE is a pointer to an object. Keep these checks
4469 in ascending tree code order. */
4470 #define TYPE_PTROB_P(NODE) \
4471 (TYPE_PTR_P (NODE) && TYPE_OBJ_P (TREE_TYPE (NODE)))
4472
4473 /* Returns true if NODE is a reference to an object. Keep these checks
4474 in ascending tree code order. */
4475 #define TYPE_REF_OBJ_P(NODE) \
4476 (TYPE_REF_P (NODE) && TYPE_OBJ_P (TREE_TYPE (NODE)))
4477
4478 /* Returns true if NODE is a pointer to an object, or a pointer to
4479 void. Keep these checks in ascending tree code order. */
4480 #define TYPE_PTROBV_P(NODE) \
4481 (TYPE_PTR_P (NODE) \
4482 && !FUNC_OR_METHOD_TYPE_P (TREE_TYPE (NODE)))
4483
4484 /* Returns true if NODE is a pointer to function type. */
4485 #define TYPE_PTRFN_P(NODE) \
4486 (TYPE_PTR_P (NODE) \
4487 && TREE_CODE (TREE_TYPE (NODE)) == FUNCTION_TYPE)
4488
4489 /* Returns true if NODE is a reference to function type. */
4490 #define TYPE_REFFN_P(NODE) \
4491 (TYPE_REF_P (NODE) \
4492 && TREE_CODE (TREE_TYPE (NODE)) == FUNCTION_TYPE)
4493
4494 /* Returns true if NODE is a pointer to member function type. */
4495 #define TYPE_PTRMEMFUNC_P(NODE) \
4496 (TREE_CODE (NODE) == RECORD_TYPE \
4497 && TYPE_PTRMEMFUNC_FLAG (NODE))
4498
4499 #define TYPE_PTRMEMFUNC_FLAG(NODE) \
4500 (TYPE_LANG_FLAG_2 (RECORD_TYPE_CHECK (NODE)))
4501
4502 /* Returns true if NODE is a pointer-to-member. */
4503 #define TYPE_PTRMEM_P(NODE) \
4504 (TYPE_PTRDATAMEM_P (NODE) || TYPE_PTRMEMFUNC_P (NODE))
4505
4506 /* Returns true if NODE is a pointer or a pointer-to-member. */
4507 #define TYPE_PTR_OR_PTRMEM_P(NODE) \
4508 (TYPE_PTR_P (NODE) || TYPE_PTRMEM_P (NODE))
4509
4510 /* Indicates when overload resolution may resolve to a pointer to
4511 member function. [expr.unary.op]/3 */
4512 #define PTRMEM_OK_P(NODE) \
4513 TREE_LANG_FLAG_0 (TREE_CHECK3 ((NODE), ADDR_EXPR, OFFSET_REF, SCOPE_REF))
4514
4515 /* Get the POINTER_TYPE to the METHOD_TYPE associated with this
4516 pointer to member function. TYPE_PTRMEMFUNC_P _must_ be true,
4517 before using this macro. */
4518 #define TYPE_PTRMEMFUNC_FN_TYPE(NODE) \
4519 (cp_build_qualified_type (TREE_TYPE (TYPE_FIELDS (NODE)),\
4520 cp_type_quals (NODE)))
4521
4522 /* As above, but can be used in places that want an lvalue at the expense
4523 of not necessarily having the correct cv-qualifiers. */
4524 #define TYPE_PTRMEMFUNC_FN_TYPE_RAW(NODE) \
4525 (TREE_TYPE (TYPE_FIELDS (NODE)))
4526
4527 /* Returns `A' for a type like `int (A::*)(double)' */
4528 #define TYPE_PTRMEMFUNC_OBJECT_TYPE(NODE) \
4529 TYPE_METHOD_BASETYPE (TREE_TYPE (TYPE_PTRMEMFUNC_FN_TYPE (NODE)))
4530
4531 /* The canonical internal RECORD_TYPE from the POINTER_TYPE to
4532 METHOD_TYPE. */
4533 #define TYPE_PTRMEMFUNC_TYPE(NODE) \
4534 TYPE_LANG_SLOT_1 (NODE)
4535
4536 /* For a pointer-to-member type of the form `T X::*', this is `X'.
4537 For a type like `void (X::*)() const', this type is `X', not `const
4538 X'. To get at the `const X' you have to look at the
4539 TYPE_PTRMEM_POINTED_TO_TYPE; there, the first parameter will have
4540 type `const X*'. */
4541 #define TYPE_PTRMEM_CLASS_TYPE(NODE) \
4542 (TYPE_PTRDATAMEM_P (NODE) \
4543 ? TYPE_OFFSET_BASETYPE (NODE) \
4544 : TYPE_PTRMEMFUNC_OBJECT_TYPE (NODE))
4545
4546 /* For a pointer-to-member type of the form `T X::*', this is `T'. */
4547 #define TYPE_PTRMEM_POINTED_TO_TYPE(NODE) \
4548 (TYPE_PTRDATAMEM_P (NODE) \
4549 ? TREE_TYPE (NODE) \
4550 : TREE_TYPE (TYPE_PTRMEMFUNC_FN_TYPE (NODE)))
4551
4552 /* For a pointer-to-member constant `X::Y' this is the RECORD_TYPE for
4553 `X'. */
4554 #define PTRMEM_CST_CLASS(NODE) \
4555 TYPE_PTRMEM_CLASS_TYPE (TREE_TYPE (PTRMEM_CST_CHECK (NODE)))
4556
4557 /* For a pointer-to-member constant `X::Y' this is the _DECL for
4558 `Y'. */
4559 #define PTRMEM_CST_MEMBER(NODE) \
4560 (((ptrmem_cst_t)PTRMEM_CST_CHECK (NODE))->member)
4561
4562 /* The expression in question for a TYPEOF_TYPE. */
4563 #define TYPEOF_TYPE_EXPR(NODE) (TYPE_VALUES_RAW (TYPEOF_TYPE_CHECK (NODE)))
4564
4565 /* The type in question for an UNDERLYING_TYPE. */
4566 #define UNDERLYING_TYPE_TYPE(NODE) \
4567 (TYPE_VALUES_RAW (UNDERLYING_TYPE_CHECK (NODE)))
4568
4569 /* The type in question for BASES. */
4570 #define BASES_TYPE(NODE) \
4571 (TYPE_VALUES_RAW (BASES_CHECK (NODE)))
4572
4573 #define BASES_DIRECT(NODE) \
4574 TREE_LANG_FLAG_0 (BASES_CHECK (NODE))
4575
4576 /* The expression in question for a DECLTYPE_TYPE. */
4577 #define DECLTYPE_TYPE_EXPR(NODE) (TYPE_VALUES_RAW (DECLTYPE_TYPE_CHECK (NODE)))
4578
4579 /* Whether the DECLTYPE_TYPE_EXPR of NODE was originally parsed as an
4580 id-expression or a member-access expression. When false, it was
4581 parsed as a full expression. */
4582 #define DECLTYPE_TYPE_ID_EXPR_OR_MEMBER_ACCESS_P(NODE) \
4583 (DECLTYPE_TYPE_CHECK (NODE))->type_common.string_flag
4584
4585 /* These flags indicate that we want different semantics from normal
4586 decltype: lambda capture just drops references,
4587 lambda proxies look through implicit dereference. */
4588 #define DECLTYPE_FOR_LAMBDA_CAPTURE(NODE) \
4589 TREE_LANG_FLAG_0 (DECLTYPE_TYPE_CHECK (NODE))
4590 #define DECLTYPE_FOR_LAMBDA_PROXY(NODE) \
4591 TREE_LANG_FLAG_2 (DECLTYPE_TYPE_CHECK (NODE))
4592 #define DECLTYPE_FOR_REF_CAPTURE(NODE) \
4593 TREE_LANG_FLAG_3 (DECLTYPE_TYPE_CHECK (NODE))
4594
4595 /* Nonzero for VAR_DECL and FUNCTION_DECL node means that `extern' was
4596 specified in its declaration. This can also be set for an
4597 erroneously declared PARM_DECL. */
4598 #define DECL_THIS_EXTERN(NODE) \
4599 DECL_LANG_FLAG_2 (VAR_FUNCTION_OR_PARM_DECL_CHECK (NODE))
4600
4601 /* Nonzero for VAR_DECL and FUNCTION_DECL node means that `static' was
4602 specified in its declaration. This can also be set for an
4603 erroneously declared PARM_DECL. */
4604 #define DECL_THIS_STATIC(NODE) \
4605 DECL_LANG_FLAG_6 (VAR_FUNCTION_OR_PARM_DECL_CHECK (NODE))
4606
4607 /* Nonzero for FIELD_DECL node means that this field is a lambda capture
4608 field for an array of runtime bound. */
4609 #define DECL_VLA_CAPTURE_P(NODE) \
4610 DECL_LANG_FLAG_1 (FIELD_DECL_CHECK (NODE))
4611
4612 /* Nonzero for PARM_DECL node means that this is an array function
4613 parameter, i.e, a[] rather than *a. */
4614 #define DECL_ARRAY_PARAMETER_P(NODE) \
4615 DECL_LANG_FLAG_1 (PARM_DECL_CHECK (NODE))
4616
4617 /* Nonzero for a FIELD_DECL who's NSMDI is currently being
4618 instantiated. */
4619 #define DECL_INSTANTIATING_NSDMI_P(NODE) \
4620 DECL_LANG_FLAG_2 (FIELD_DECL_CHECK (NODE))
4621
4622 /* Nonzero for FIELD_DECL node means that this field is a base class
4623 of the parent object, as opposed to a member field. */
4624 #define DECL_FIELD_IS_BASE(NODE) \
4625 DECL_LANG_FLAG_6 (FIELD_DECL_CHECK (NODE))
4626
4627 /* Nonzero for FIELD_DECL node means that this field is a simple (no
4628 explicit initializer) lambda capture field, making it invisible to
4629 name lookup in unevaluated contexts. */
4630 #define DECL_NORMAL_CAPTURE_P(NODE) \
4631 DECL_LANG_FLAG_7 (FIELD_DECL_CHECK (NODE))
4632
4633 /* Nonzero if TYPE is an anonymous union or struct type. We have to use a
4634 flag for this because "A union for which objects or pointers are
4635 declared is not an anonymous union" [class.union]. */
4636 #define ANON_AGGR_TYPE_P(NODE) \
4637 (CLASS_TYPE_P (NODE) && LANG_TYPE_CLASS_CHECK (NODE)->anon_aggr)
4638 #define SET_ANON_AGGR_TYPE_P(NODE) \
4639 (LANG_TYPE_CLASS_CHECK (NODE)->anon_aggr = 1)
4640
4641 /* Nonzero if TYPE is an anonymous union type. */
4642 #define ANON_UNION_TYPE_P(NODE) \
4643 (TREE_CODE (NODE) == UNION_TYPE && ANON_AGGR_TYPE_P (NODE))
4644
4645 /* Define fields and accessors for nodes representing declared names. */
4646
4647 /* True if TYPE is an unnamed structured type with a typedef for
4648 linkage purposes. In that case TYPE_NAME and TYPE_STUB_DECL of the
4649 MAIN-VARIANT are different. */
4650 #define TYPE_WAS_UNNAMED(NODE) \
4651 (TYPE_NAME (TYPE_MAIN_VARIANT (NODE)) \
4652 != TYPE_STUB_DECL (TYPE_MAIN_VARIANT (NODE)))
4653
4654 /* C++: all of these are overloaded! These apply only to TYPE_DECLs. */
4655
4656 /* The format of each node in the DECL_FRIENDLIST is as follows:
4657
4658 The TREE_PURPOSE will be the name of a function, i.e., an
4659 IDENTIFIER_NODE. The TREE_VALUE will be itself a TREE_LIST, whose
4660 TREE_VALUEs are friends with the given name. */
4661 #define DECL_FRIENDLIST(NODE) (DECL_INITIAL (NODE))
4662 #define FRIEND_NAME(LIST) (TREE_PURPOSE (LIST))
4663 #define FRIEND_DECLS(LIST) (TREE_VALUE (LIST))
4664
4665 /* The DECL_ACCESS, if non-NULL, is a TREE_LIST. The TREE_PURPOSE of
4666 each node is a type; the TREE_VALUE is the access granted for this
4667 DECL in that type. The DECL_ACCESS is set by access declarations.
4668 For example, if a member that would normally be public in a
4669 derived class is made protected, then the derived class and the
4670 protected_access_node will appear in the DECL_ACCESS for the node. */
4671 #define DECL_ACCESS(NODE) (LANG_DECL_MIN_CHECK (NODE)->access)
4672
4673 /* Nonzero if the FUNCTION_DECL is a global constructor. */
4674 #define DECL_GLOBAL_CTOR_P(NODE) \
4675 (LANG_DECL_FN_CHECK (NODE)->global_ctor_p)
4676
4677 /* Nonzero if the FUNCTION_DECL is a global destructor. */
4678 #define DECL_GLOBAL_DTOR_P(NODE) \
4679 (LANG_DECL_FN_CHECK (NODE)->global_dtor_p)
4680
4681 /* Accessor macros for C++ template decl nodes. */
4682
4683 /* The DECL_TEMPLATE_PARMS are a list. The TREE_PURPOSE of each node
4684 is a INT_CST whose TREE_INT_CST_LOW indicates the level of the
4685 template parameters, with 1 being the outermost set of template
4686 parameters. The TREE_VALUE is a vector, whose elements are the
4687 template parameters at each level. Each element in the vector is a
4688 TREE_LIST, whose TREE_VALUE is a PARM_DECL (if the parameter is a
4689 non-type parameter), or a TYPE_DECL (if the parameter is a type
4690 parameter). The TREE_PURPOSE is the default value, if any. The
4691 TEMPLATE_PARM_INDEX for the parameter is available as the
4692 DECL_INITIAL (for a PARM_DECL) or as the TREE_TYPE (for a
4693 TYPE_DECL).
4694
4695 FIXME: CONST_CAST_TREE is a hack that hopefully will go away after
4696 tree is converted to C++ class hiearchy. */
4697 #define DECL_TEMPLATE_PARMS(NODE) \
4698 ((struct tree_template_decl *)CONST_CAST_TREE (TEMPLATE_DECL_CHECK (NODE)))->arguments
4699 #define DECL_INNERMOST_TEMPLATE_PARMS(NODE) \
4700 INNERMOST_TEMPLATE_PARMS (DECL_TEMPLATE_PARMS (NODE))
4701 #define DECL_NTPARMS(NODE) \
4702 TREE_VEC_LENGTH (DECL_INNERMOST_TEMPLATE_PARMS (NODE))
4703 /* For function, method, class-data templates.
4704
4705 FIXME: CONST_CAST_TREE is a hack that hopefully will go away after
4706 tree is converted to C++ class hiearchy. */
4707 #define DECL_TEMPLATE_RESULT(NODE) \
4708 ((struct tree_template_decl *)CONST_CAST_TREE(TEMPLATE_DECL_CHECK (NODE)))->result
4709 /* For a function template at namespace scope, DECL_TEMPLATE_INSTANTIATIONS
4710 lists all instantiations and specializations of the function so that
4711 tsubst_friend_function can reassign them to another template if we find
4712 that the namespace-scope template is really a partial instantiation of a
4713 friend template.
4714
4715 For a class template the DECL_TEMPLATE_INSTANTIATIONS lists holds
4716 all instantiations and specializations of the class type, including
4717 partial instantiations and partial specializations, so that if we
4718 explicitly specialize a partial instantiation we can walk the list
4719 in maybe_process_partial_specialization and reassign them or complain
4720 as appropriate.
4721
4722 In both cases, the TREE_PURPOSE of each node contains the arguments
4723 used; the TREE_VALUE contains the generated variable. The template
4724 arguments are always complete. For example, given:
4725
4726 template <class T> struct S1 {
4727 template <class U> struct S2 {};
4728 template <class U> struct S2<U*> {};
4729 };
4730
4731 the record for the partial specialization will contain, as its
4732 argument list, { {T}, {U*} }, and will be on the
4733 DECL_TEMPLATE_INSTANTIATIONS list for `template <class T> template
4734 <class U> struct S1<T>::S2'.
4735
4736 This list is not used for other templates. */
4737 #define DECL_TEMPLATE_INSTANTIATIONS(NODE) \
4738 DECL_SIZE_UNIT (TEMPLATE_DECL_CHECK (NODE))
4739
4740 /* For a class template, this list contains the partial
4741 specializations of this template. (Full specializations are not
4742 recorded on this list.) The TREE_PURPOSE holds the arguments used
4743 in the partial specialization (e.g., for `template <class T> struct
4744 S<T*, int>' this will be `T*, int'.) The arguments will also include
4745 any outer template arguments. The TREE_VALUE holds the TEMPLATE_DECL
4746 for the partial specialization. The TREE_TYPE is the _TYPE node for
4747 the partial specialization.
4748
4749 This list is not used for other templates. */
4750 #define DECL_TEMPLATE_SPECIALIZATIONS(NODE) \
4751 DECL_SIZE (TEMPLATE_DECL_CHECK (NODE))
4752
4753 /* Nonzero for a DECL which is actually a template parameter. Keep
4754 these checks in ascending tree code order. */
4755 #define DECL_TEMPLATE_PARM_P(NODE) \
4756 (DECL_LANG_FLAG_0 (NODE) \
4757 && (TREE_CODE (NODE) == CONST_DECL \
4758 || TREE_CODE (NODE) == PARM_DECL \
4759 || TREE_CODE (NODE) == TYPE_DECL \
4760 || TREE_CODE (NODE) == TEMPLATE_DECL))
4761
4762 /* Nonzero for a raw template parameter node. */
4763 #define TEMPLATE_PARM_P(NODE) \
4764 (TREE_CODE (NODE) == TEMPLATE_TYPE_PARM \
4765 || TREE_CODE (NODE) == TEMPLATE_TEMPLATE_PARM \
4766 || TREE_CODE (NODE) == TEMPLATE_PARM_INDEX)
4767
4768 /* Mark NODE as a template parameter. */
4769 #define SET_DECL_TEMPLATE_PARM_P(NODE) \
4770 (DECL_LANG_FLAG_0 (NODE) = 1)
4771
4772 /* Nonzero if NODE is a template template parameter. */
4773 #define DECL_TEMPLATE_TEMPLATE_PARM_P(NODE) \
4774 (TREE_CODE (NODE) == TEMPLATE_DECL && DECL_TEMPLATE_PARM_P (NODE))
4775
4776 /* Nonzero for a DECL that represents a function template. */
4777 #define DECL_FUNCTION_TEMPLATE_P(NODE) \
4778 (TREE_CODE (NODE) == TEMPLATE_DECL \
4779 && DECL_TEMPLATE_RESULT (NODE) != NULL_TREE \
4780 && TREE_CODE (DECL_TEMPLATE_RESULT (NODE)) == FUNCTION_DECL)
4781
4782 /* Nonzero for a DECL that represents a class template or alias
4783 template. */
4784 #define DECL_TYPE_TEMPLATE_P(NODE) \
4785 (TREE_CODE (NODE) == TEMPLATE_DECL \
4786 && DECL_TEMPLATE_RESULT (NODE) != NULL_TREE \
4787 && TREE_CODE (DECL_TEMPLATE_RESULT (NODE)) == TYPE_DECL)
4788
4789 /* Nonzero for a DECL that represents a class template. */
4790 #define DECL_CLASS_TEMPLATE_P(NODE) \
4791 (DECL_TYPE_TEMPLATE_P (NODE) \
4792 && DECL_IMPLICIT_TYPEDEF_P (DECL_TEMPLATE_RESULT (NODE)))
4793
4794 /* Nonzero for a TEMPLATE_DECL that represents an alias template. */
4795 #define DECL_ALIAS_TEMPLATE_P(NODE) \
4796 (DECL_TYPE_TEMPLATE_P (NODE) \
4797 && !DECL_ARTIFICIAL (DECL_TEMPLATE_RESULT (NODE)))
4798
4799 /* Nonzero for a NODE which declares a type. */
4800 #define DECL_DECLARES_TYPE_P(NODE) \
4801 (TREE_CODE (NODE) == TYPE_DECL || DECL_TYPE_TEMPLATE_P (NODE))
4802
4803 /* Nonzero if NODE declares a function. */
4804 #define DECL_DECLARES_FUNCTION_P(NODE) \
4805 (TREE_CODE (NODE) == FUNCTION_DECL || DECL_FUNCTION_TEMPLATE_P (NODE))
4806
4807 /* Nonzero if NODE is the typedef implicitly generated for a type when
4808 the type is declared. In C++, `struct S {};' is roughly
4809 equivalent to `struct S {}; typedef struct S S;' in C.
4810 DECL_IMPLICIT_TYPEDEF_P will hold for the typedef indicated in this
4811 example. In C++, there is a second implicit typedef for each
4812 class, called the injected-class-name, in the scope of `S' itself, so that
4813 you can say `S::S'. DECL_SELF_REFERENCE_P will hold for that typedef. */
4814 #define DECL_IMPLICIT_TYPEDEF_P(NODE) \
4815 (TREE_CODE (NODE) == TYPE_DECL && DECL_LANG_FLAG_2 (NODE))
4816 #define SET_DECL_IMPLICIT_TYPEDEF_P(NODE) \
4817 (DECL_LANG_FLAG_2 (NODE) = 1)
4818 #define DECL_SELF_REFERENCE_P(NODE) \
4819 (TREE_CODE (NODE) == TYPE_DECL && DECL_LANG_FLAG_4 (NODE))
4820 #define SET_DECL_SELF_REFERENCE_P(NODE) \
4821 (DECL_LANG_FLAG_4 (NODE) = 1)
4822
4823 /* A `primary' template is one that has its own template header and is not
4824 a partial specialization. A member function of a class template is a
4825 template, but not primary. A member template is primary. Friend
4826 templates are primary, too. */
4827
4828 /* Returns the primary template corresponding to these parameters. */
4829 #define DECL_PRIMARY_TEMPLATE(NODE) \
4830 (TREE_TYPE (DECL_INNERMOST_TEMPLATE_PARMS (NODE)))
4831
4832 /* Returns nonzero if NODE is a primary template. */
4833 #define PRIMARY_TEMPLATE_P(NODE) (DECL_PRIMARY_TEMPLATE (NODE) == (NODE))
4834
4835 /* Nonzero iff NODE is a specialization of a template. The value
4836 indicates the type of specializations:
4837
4838 1=implicit instantiation
4839
4840 2=partial or explicit specialization, e.g.:
4841
4842 template <> int min<int> (int, int),
4843
4844 3=explicit instantiation, e.g.:
4845
4846 template int min<int> (int, int);
4847
4848 Note that NODE will be marked as a specialization even if the
4849 template it is instantiating is not a primary template. For
4850 example, given:
4851
4852 template <typename T> struct O {
4853 void f();
4854 struct I {};
4855 };
4856
4857 both O<int>::f and O<int>::I will be marked as instantiations.
4858
4859 If DECL_USE_TEMPLATE is nonzero, then DECL_TEMPLATE_INFO will also
4860 be non-NULL. */
4861 #define DECL_USE_TEMPLATE(NODE) (DECL_LANG_SPECIFIC (NODE)->u.base.use_template)
4862
4863 /* Like DECL_USE_TEMPLATE, but for class types. */
4864 #define CLASSTYPE_USE_TEMPLATE(NODE) \
4865 (LANG_TYPE_CLASS_CHECK (NODE)->use_template)
4866
4867 /* True if NODE is a specialization of a primary template. */
4868 #define CLASSTYPE_SPECIALIZATION_OF_PRIMARY_TEMPLATE_P(NODE) \
4869 (CLASS_TYPE_P (NODE) \
4870 && CLASSTYPE_USE_TEMPLATE (NODE) \
4871 && PRIMARY_TEMPLATE_P (CLASSTYPE_TI_TEMPLATE (NODE)))
4872
4873 #define DECL_TEMPLATE_INSTANTIATION(NODE) (DECL_USE_TEMPLATE (NODE) & 1)
4874 #define CLASSTYPE_TEMPLATE_INSTANTIATION(NODE) \
4875 (CLASSTYPE_USE_TEMPLATE (NODE) & 1)
4876
4877 #define DECL_TEMPLATE_SPECIALIZATION(NODE) (DECL_USE_TEMPLATE (NODE) == 2)
4878 #define SET_DECL_TEMPLATE_SPECIALIZATION(NODE) (DECL_USE_TEMPLATE (NODE) = 2)
4879
4880 /* Returns true for an explicit or partial specialization of a class
4881 template. */
4882 #define CLASSTYPE_TEMPLATE_SPECIALIZATION(NODE) \
4883 (CLASSTYPE_USE_TEMPLATE (NODE) == 2)
4884 #define SET_CLASSTYPE_TEMPLATE_SPECIALIZATION(NODE) \
4885 (CLASSTYPE_USE_TEMPLATE (NODE) = 2)
4886
4887 #define DECL_IMPLICIT_INSTANTIATION(NODE) (DECL_USE_TEMPLATE (NODE) == 1)
4888 #define SET_DECL_IMPLICIT_INSTANTIATION(NODE) (DECL_USE_TEMPLATE (NODE) = 1)
4889 #define CLASSTYPE_IMPLICIT_INSTANTIATION(NODE) \
4890 (CLASSTYPE_USE_TEMPLATE (NODE) == 1)
4891 #define SET_CLASSTYPE_IMPLICIT_INSTANTIATION(NODE) \
4892 (CLASSTYPE_USE_TEMPLATE (NODE) = 1)
4893
4894 #define DECL_EXPLICIT_INSTANTIATION(NODE) (DECL_USE_TEMPLATE (NODE) == 3)
4895 #define SET_DECL_EXPLICIT_INSTANTIATION(NODE) (DECL_USE_TEMPLATE (NODE) = 3)
4896 #define CLASSTYPE_EXPLICIT_INSTANTIATION(NODE) \
4897 (CLASSTYPE_USE_TEMPLATE (NODE) == 3)
4898 #define SET_CLASSTYPE_EXPLICIT_INSTANTIATION(NODE) \
4899 (CLASSTYPE_USE_TEMPLATE (NODE) = 3)
4900
4901 /* Nonzero if DECL is a friend function which is an instantiation
4902 from the point of view of the compiler, but not from the point of
4903 view of the language. For example given:
4904 template <class T> struct S { friend void f(T) {}; };
4905 the declaration of `void f(int)' generated when S<int> is
4906 instantiated will not be a DECL_TEMPLATE_INSTANTIATION, but will be
4907 a DECL_FRIEND_PSEUDO_TEMPLATE_INSTANTIATION. */
4908 #define DECL_FRIEND_PSEUDO_TEMPLATE_INSTANTIATION(DECL) \
4909 (DECL_LANG_SPECIFIC (DECL) && DECL_TEMPLATE_INFO (DECL) \
4910 && !DECL_USE_TEMPLATE (DECL))
4911
4912 /* Nonzero if DECL is a function generated from a function 'temploid',
4913 i.e. template, member of class template, or dependent friend. */
4914 #define DECL_TEMPLOID_INSTANTIATION(DECL) \
4915 (DECL_TEMPLATE_INSTANTIATION (DECL) \
4916 || DECL_FRIEND_PSEUDO_TEMPLATE_INSTANTIATION (DECL))
4917
4918 /* Nonzero if DECL is either defined implicitly by the compiler or
4919 generated from a temploid. */
4920 #define DECL_GENERATED_P(DECL) \
4921 (DECL_TEMPLOID_INSTANTIATION (DECL) || DECL_DEFAULTED_FN (DECL))
4922
4923 /* Nonzero iff we are currently processing a declaration for an
4924 entity with its own template parameter list, and which is not a
4925 full specialization. */
4926 #define PROCESSING_REAL_TEMPLATE_DECL_P() \
4927 (!processing_template_parmlist \
4928 && processing_template_decl > template_class_depth (current_scope ()))
4929
4930 /* Nonzero if this VAR_DECL or FUNCTION_DECL has already been
4931 instantiated, i.e. its definition has been generated from the
4932 pattern given in the template. */
4933 #define DECL_TEMPLATE_INSTANTIATED(NODE) \
4934 DECL_LANG_FLAG_1 (VAR_OR_FUNCTION_DECL_CHECK (NODE))
4935
4936 /* We know what we're doing with this decl now. */
4937 #define DECL_INTERFACE_KNOWN(NODE) DECL_LANG_FLAG_5 (NODE)
4938
4939 /* DECL_EXTERNAL must be set on a decl until the decl is actually emitted,
4940 so that assemble_external will work properly. So we have this flag to
4941 tell us whether the decl is really not external.
4942
4943 This flag does not indicate whether or not the decl is defined in the
4944 current translation unit; it indicates whether or not we should emit the
4945 decl at the end of compilation if it is defined and needed. */
4946 #define DECL_NOT_REALLY_EXTERN(NODE) \
4947 (DECL_LANG_SPECIFIC (NODE)->u.base.not_really_extern)
4948
4949 #define DECL_REALLY_EXTERN(NODE) \
4950 (DECL_EXTERNAL (NODE) \
4951 && (!DECL_LANG_SPECIFIC (NODE) || !DECL_NOT_REALLY_EXTERN (NODE)))
4952
4953 /* A thunk is a stub function.
4954
4955 A thunk is an alternate entry point for an ordinary FUNCTION_DECL.
4956 The address of the ordinary FUNCTION_DECL is given by the
4957 DECL_INITIAL, which is always an ADDR_EXPR whose operand is a
4958 FUNCTION_DECL. The job of the thunk is to either adjust the this
4959 pointer before transferring control to the FUNCTION_DECL, or call
4960 FUNCTION_DECL and then adjust the result value. Note, the result
4961 pointer adjusting thunk must perform a call to the thunked
4962 function, (or be implemented via passing some invisible parameter
4963 to the thunked function, which is modified to perform the
4964 adjustment just before returning).
4965
4966 A thunk may perform either, or both, of the following operations:
4967
4968 o Adjust the this or result pointer by a constant offset.
4969 o Adjust the this or result pointer by looking up a vcall or vbase offset
4970 in the vtable.
4971
4972 A this pointer adjusting thunk converts from a base to a derived
4973 class, and hence adds the offsets. A result pointer adjusting thunk
4974 converts from a derived class to a base, and hence subtracts the
4975 offsets. If both operations are performed, then the constant
4976 adjustment is performed first for this pointer adjustment and last
4977 for the result pointer adjustment.
4978
4979 The constant adjustment is given by THUNK_FIXED_OFFSET. If the
4980 vcall or vbase offset is required, THUNK_VIRTUAL_OFFSET is
4981 used. For this pointer adjusting thunks, it is the vcall offset
4982 into the vtable. For result pointer adjusting thunks it is the
4983 binfo of the virtual base to convert to. Use that binfo's vbase
4984 offset.
4985
4986 It is possible to have equivalent covariant thunks. These are
4987 distinct virtual covariant thunks whose vbase offsets happen to
4988 have the same value. THUNK_ALIAS is used to pick one as the
4989 canonical thunk, which will get all the this pointer adjusting
4990 thunks attached to it. */
4991
4992 /* An integer indicating how many bytes should be subtracted from the
4993 this or result pointer when this function is called. */
4994 #define THUNK_FIXED_OFFSET(DECL) \
4995 (DECL_LANG_SPECIFIC (THUNK_FUNCTION_CHECK (DECL))->u.fn.u5.fixed_offset)
4996
4997 /* A tree indicating how to perform the virtual adjustment. For a this
4998 adjusting thunk it is the number of bytes to be added to the vtable
4999 to find the vcall offset. For a result adjusting thunk, it is the
5000 binfo of the relevant virtual base. If NULL, then there is no
5001 virtual adjust. (The vptr is always located at offset zero from
5002 the this or result pointer.) (If the covariant type is within the
5003 class hierarchy being laid out, the vbase index is not yet known
5004 at the point we need to create the thunks, hence the need to use
5005 binfos.) */
5006
5007 #define THUNK_VIRTUAL_OFFSET(DECL) \
5008 (LANG_DECL_MIN_CHECK (FUNCTION_DECL_CHECK (DECL))->access)
5009
5010 /* A thunk which is equivalent to another thunk. */
5011 #define THUNK_ALIAS(DECL) \
5012 (DECL_LANG_SPECIFIC (FUNCTION_DECL_CHECK (DECL))->u.min.template_info)
5013
5014 /* For thunk NODE, this is the FUNCTION_DECL thunked to. It is
5015 possible for the target to be a thunk too. */
5016 #define THUNK_TARGET(NODE) \
5017 (LANG_DECL_FN_CHECK (NODE)->befriending_classes)
5018
5019 /* True for a SCOPE_REF iff the "template" keyword was used to
5020 indicate that the qualified name denotes a template. */
5021 #define QUALIFIED_NAME_IS_TEMPLATE(NODE) \
5022 (TREE_LANG_FLAG_1 (SCOPE_REF_CHECK (NODE)))
5023
5024 /* [coroutines]
5025 */
5026
5027 /* True if NODE is a co-routine FUNCTION_DECL. */
5028 #define DECL_COROUTINE_P(NODE) \
5029 (LANG_DECL_FN_CHECK (DECL_COMMON_CHECK (NODE))->coroutine_p)
5030
5031 /* For a FUNCTION_DECL of a coroutine, this holds the ACTOR helper function
5032 decl. */
5033 #define DECL_ACTOR_FN(NODE) \
5034 (coro_get_actor_function ((NODE)))
5035
5036 /* For a FUNCTION_DECL of a coroutine, this holds the DESTROY helper function
5037 decl. */
5038 #define DECL_DESTROY_FN(NODE) \
5039 (coro_get_destroy_function ((NODE)))
5040
5041 /* For a FUNCTION_DECL of a coroutine helper (ACTOR or DESTROY), this points
5042 back to the original (ramp) function. */
5043 #define DECL_RAMP_FN(NODE) \
5044 (coro_get_ramp_function (NODE))
5045
5046 /* True for an OMP_ATOMIC that has dependent parameters. These are stored
5047 as an expr in operand 1, and integer_zero_node or clauses in operand 0. */
5048 #define OMP_ATOMIC_DEPENDENT_P(NODE) \
5049 (TREE_CODE (TREE_OPERAND (OMP_ATOMIC_CHECK (NODE), 0)) == INTEGER_CST \
5050 || TREE_CODE (TREE_OPERAND (OMP_ATOMIC_CHECK (NODE), 0)) == OMP_CLAUSE)
5051
5052 /* Used while gimplifying continue statements bound to OMP_FOR nodes. */
5053 #define OMP_FOR_GIMPLIFYING_P(NODE) \
5054 (TREE_LANG_FLAG_0 (OMP_LOOPING_CHECK (NODE)))
5055
5056 /* A language-specific token attached to the OpenMP data clauses to
5057 hold code (or code fragments) related to ctors, dtors, and op=.
5058 See semantics.c for details. */
5059 #define CP_OMP_CLAUSE_INFO(NODE) \
5060 TREE_TYPE (OMP_CLAUSE_RANGE_CHECK (NODE, OMP_CLAUSE_PRIVATE, \
5061 OMP_CLAUSE__CONDTEMP_))
5062
5063 /* Nonzero if this transaction expression's body contains statements. */
5064 #define TRANSACTION_EXPR_IS_STMT(NODE) \
5065 TREE_LANG_FLAG_0 (TRANSACTION_EXPR_CHECK (NODE))
5066
5067 /* These macros provide convenient access to the various _STMT nodes
5068 created when parsing template declarations. */
5069 #define TRY_STMTS(NODE) TREE_OPERAND (TRY_BLOCK_CHECK (NODE), 0)
5070 #define TRY_HANDLERS(NODE) TREE_OPERAND (TRY_BLOCK_CHECK (NODE), 1)
5071
5072 #define EH_SPEC_STMTS(NODE) TREE_OPERAND (EH_SPEC_BLOCK_CHECK (NODE), 0)
5073 #define EH_SPEC_RAISES(NODE) TREE_OPERAND (EH_SPEC_BLOCK_CHECK (NODE), 1)
5074
5075 #define USING_STMT_NAMESPACE(NODE) TREE_OPERAND (USING_STMT_CHECK (NODE), 0)
5076
5077 /* Nonzero if this try block is a function try block. */
5078 #define FN_TRY_BLOCK_P(NODE) TREE_LANG_FLAG_3 (TRY_BLOCK_CHECK (NODE))
5079 #define HANDLER_PARMS(NODE) TREE_OPERAND (HANDLER_CHECK (NODE), 0)
5080 #define HANDLER_BODY(NODE) TREE_OPERAND (HANDLER_CHECK (NODE), 1)
5081 #define HANDLER_TYPE(NODE) TREE_TYPE (HANDLER_CHECK (NODE))
5082
5083 /* CLEANUP_STMT accessors. The statement(s) covered, the cleanup to run
5084 and the VAR_DECL for which this cleanup exists. */
5085 #define CLEANUP_BODY(NODE) TREE_OPERAND (CLEANUP_STMT_CHECK (NODE), 0)
5086 #define CLEANUP_EXPR(NODE) TREE_OPERAND (CLEANUP_STMT_CHECK (NODE), 1)
5087 #define CLEANUP_DECL(NODE) TREE_OPERAND (CLEANUP_STMT_CHECK (NODE), 2)
5088
5089 /* IF_STMT accessors. These give access to the condition of the if
5090 statement, the then block of the if statement, and the else block
5091 of the if statement if it exists. */
5092 #define IF_COND(NODE) TREE_OPERAND (IF_STMT_CHECK (NODE), 0)
5093 #define THEN_CLAUSE(NODE) TREE_OPERAND (IF_STMT_CHECK (NODE), 1)
5094 #define ELSE_CLAUSE(NODE) TREE_OPERAND (IF_STMT_CHECK (NODE), 2)
5095 #define IF_SCOPE(NODE) TREE_OPERAND (IF_STMT_CHECK (NODE), 3)
5096 #define IF_STMT_CONSTEXPR_P(NODE) TREE_LANG_FLAG_0 (IF_STMT_CHECK (NODE))
5097
5098 /* Like PACK_EXPANSION_EXTRA_ARGS, for constexpr if. IF_SCOPE is used while
5099 building an IF_STMT; IF_STMT_EXTRA_ARGS is used after it is complete. */
5100 #define IF_STMT_EXTRA_ARGS(NODE) IF_SCOPE (NODE)
5101
5102 /* WHILE_STMT accessors. These give access to the condition of the
5103 while statement and the body of the while statement, respectively. */
5104 #define WHILE_COND(NODE) TREE_OPERAND (WHILE_STMT_CHECK (NODE), 0)
5105 #define WHILE_BODY(NODE) TREE_OPERAND (WHILE_STMT_CHECK (NODE), 1)
5106
5107 /* DO_STMT accessors. These give access to the condition of the do
5108 statement and the body of the do statement, respectively. */
5109 #define DO_COND(NODE) TREE_OPERAND (DO_STMT_CHECK (NODE), 0)
5110 #define DO_BODY(NODE) TREE_OPERAND (DO_STMT_CHECK (NODE), 1)
5111
5112 /* FOR_STMT accessors. These give access to the init statement,
5113 condition, update expression, and body of the for statement,
5114 respectively. */
5115 #define FOR_INIT_STMT(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 0)
5116 #define FOR_COND(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 1)
5117 #define FOR_EXPR(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 2)
5118 #define FOR_BODY(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 3)
5119 #define FOR_SCOPE(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 4)
5120
5121 /* RANGE_FOR_STMT accessors. These give access to the declarator,
5122 expression, body, and scope of the statement, respectively. */
5123 #define RANGE_FOR_DECL(NODE) TREE_OPERAND (RANGE_FOR_STMT_CHECK (NODE), 0)
5124 #define RANGE_FOR_EXPR(NODE) TREE_OPERAND (RANGE_FOR_STMT_CHECK (NODE), 1)
5125 #define RANGE_FOR_BODY(NODE) TREE_OPERAND (RANGE_FOR_STMT_CHECK (NODE), 2)
5126 #define RANGE_FOR_SCOPE(NODE) TREE_OPERAND (RANGE_FOR_STMT_CHECK (NODE), 3)
5127 #define RANGE_FOR_UNROLL(NODE) TREE_OPERAND (RANGE_FOR_STMT_CHECK (NODE), 4)
5128 #define RANGE_FOR_INIT_STMT(NODE) TREE_OPERAND (RANGE_FOR_STMT_CHECK (NODE), 5)
5129 #define RANGE_FOR_IVDEP(NODE) TREE_LANG_FLAG_6 (RANGE_FOR_STMT_CHECK (NODE))
5130
5131 #define SWITCH_STMT_COND(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 0)
5132 #define SWITCH_STMT_BODY(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 1)
5133 #define SWITCH_STMT_TYPE(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 2)
5134 #define SWITCH_STMT_SCOPE(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 3)
5135 /* True if there are case labels for all possible values of switch cond, either
5136 because there is a default: case label or because the case label ranges cover
5137 all values. */
5138 #define SWITCH_STMT_ALL_CASES_P(NODE) \
5139 TREE_LANG_FLAG_0 (SWITCH_STMT_CHECK (NODE))
5140 /* True if the body of a switch stmt contains no BREAK_STMTs. */
5141 #define SWITCH_STMT_NO_BREAK_P(NODE) \
5142 TREE_LANG_FLAG_2 (SWITCH_STMT_CHECK (NODE))
5143
5144 /* STMT_EXPR accessor. */
5145 #define STMT_EXPR_STMT(NODE) TREE_OPERAND (STMT_EXPR_CHECK (NODE), 0)
5146
5147 /* EXPR_STMT accessor. This gives the expression associated with an
5148 expression statement. */
5149 #define EXPR_STMT_EXPR(NODE) TREE_OPERAND (EXPR_STMT_CHECK (NODE), 0)
5150
5151 /* True if this TARGET_EXPR was created by build_cplus_new, and so we can
5152 discard it if it isn't useful. */
5153 #define TARGET_EXPR_IMPLICIT_P(NODE) \
5154 TREE_LANG_FLAG_0 (TARGET_EXPR_CHECK (NODE))
5155
5156 /* True if this TARGET_EXPR is the result of list-initialization of a
5157 temporary. */
5158 #define TARGET_EXPR_LIST_INIT_P(NODE) \
5159 TREE_LANG_FLAG_1 (TARGET_EXPR_CHECK (NODE))
5160
5161 /* True if this TARGET_EXPR expresses direct-initialization of an object
5162 to be named later. */
5163 #define TARGET_EXPR_DIRECT_INIT_P(NODE) \
5164 TREE_LANG_FLAG_2 (TARGET_EXPR_CHECK (NODE))
5165
5166 /* True if NODE is a TARGET_EXPR that just expresses a copy of its INITIAL; if
5167 the initializer has void type, it's doing something more complicated. */
5168 #define SIMPLE_TARGET_EXPR_P(NODE) \
5169 (TREE_CODE (NODE) == TARGET_EXPR \
5170 && TARGET_EXPR_INITIAL (NODE) \
5171 && !VOID_TYPE_P (TREE_TYPE (TARGET_EXPR_INITIAL (NODE))))
5172
5173 /* True if EXPR expresses direct-initialization of a TYPE. */
5174 #define DIRECT_INIT_EXPR_P(TYPE,EXPR) \
5175 (TREE_CODE (EXPR) == TARGET_EXPR && TREE_LANG_FLAG_2 (EXPR) \
5176 && same_type_ignoring_top_level_qualifiers_p (TYPE, TREE_TYPE (EXPR)))
5177
5178 /* True if this CONVERT_EXPR is for a conversion to virtual base in
5179 an NSDMI, and should be re-evaluated when used in a constructor. */
5180 #define CONVERT_EXPR_VBASE_PATH(NODE) \
5181 TREE_LANG_FLAG_0 (CONVERT_EXPR_CHECK (NODE))
5182
5183 /* True if SIZEOF_EXPR argument is type. */
5184 #define SIZEOF_EXPR_TYPE_P(NODE) \
5185 TREE_LANG_FLAG_0 (SIZEOF_EXPR_CHECK (NODE))
5186
5187 /* True if the ALIGNOF_EXPR was spelled "alignof". */
5188 #define ALIGNOF_EXPR_STD_P(NODE) \
5189 TREE_LANG_FLAG_0 (ALIGNOF_EXPR_CHECK (NODE))
5190
5191 /* OMP_DEPOBJ accessors. These give access to the depobj expression of the
5192 #pragma omp depobj directive and the clauses, respectively. If
5193 OMP_DEPOBJ_CLAUSES is INTEGER_CST, it is instead the update clause kind
5194 or OMP_CLAUSE_DEPEND_LAST for destroy clause. */
5195 #define OMP_DEPOBJ_DEPOBJ(NODE) TREE_OPERAND (OMP_DEPOBJ_CHECK (NODE), 0)
5196 #define OMP_DEPOBJ_CLAUSES(NODE) TREE_OPERAND (OMP_DEPOBJ_CHECK (NODE), 1)
5197
5198 /* An enumeration of the kind of tags that C++ accepts. */
5199 enum tag_types {
5200 none_type = 0, /* Not a tag type. */
5201 record_type, /* "struct" types. */
5202 class_type, /* "class" types. */
5203 union_type, /* "union" types. */
5204 enum_type, /* "enum" types. */
5205 typename_type, /* "typename" types. */
5206 scope_type /* namespace or tagged type name followed by :: */
5207 };
5208
5209 /* The various kinds of lvalues we distinguish. */
5210 enum cp_lvalue_kind_flags {
5211 clk_none = 0, /* Things that are not an lvalue. */
5212 clk_ordinary = 1, /* An ordinary lvalue. */
5213 clk_rvalueref = 2,/* An xvalue (rvalue formed using an rvalue reference) */
5214 clk_class = 4, /* A prvalue of class or array type. */
5215 clk_bitfield = 8, /* An lvalue for a bit-field. */
5216 clk_packed = 16 /* An lvalue for a packed field. */
5217 };
5218
5219 /* This type is used for parameters and variables which hold
5220 combinations of the flags in enum cp_lvalue_kind_flags. */
5221 typedef int cp_lvalue_kind;
5222
5223 /* Various kinds of template specialization, instantiation, etc. */
5224 enum tmpl_spec_kind {
5225 tsk_none, /* Not a template at all. */
5226 tsk_invalid_member_spec, /* An explicit member template
5227 specialization, but the enclosing
5228 classes have not all been explicitly
5229 specialized. */
5230 tsk_invalid_expl_inst, /* An explicit instantiation containing
5231 template parameter lists. */
5232 tsk_excessive_parms, /* A template declaration with too many
5233 template parameter lists. */
5234 tsk_insufficient_parms, /* A template declaration with too few
5235 parameter lists. */
5236 tsk_template, /* A template declaration. */
5237 tsk_expl_spec, /* An explicit specialization. */
5238 tsk_expl_inst /* An explicit instantiation. */
5239 };
5240
5241 /* The various kinds of access. BINFO_ACCESS depends on these being
5242 two bit quantities. The numerical values are important; they are
5243 used to initialize RTTI data structures, so changing them changes
5244 the ABI. */
5245 enum access_kind {
5246 ak_none = 0, /* Inaccessible. */
5247 ak_public = 1, /* Accessible, as a `public' thing. */
5248 ak_protected = 2, /* Accessible, as a `protected' thing. */
5249 ak_private = 3 /* Accessible, as a `private' thing. */
5250 };
5251
5252 /* The various kinds of special functions. If you add to this list,
5253 you should update special_function_p as well. */
5254 enum special_function_kind {
5255 sfk_none = 0, /* Not a special function. This enumeral
5256 must have value zero; see
5257 special_function_p. */
5258 /* The following are ordered, for use by member synthesis fns. */
5259 sfk_destructor, /* A destructor. */
5260 sfk_constructor, /* A constructor. */
5261 sfk_inheriting_constructor, /* An inheriting constructor */
5262 sfk_copy_constructor, /* A copy constructor. */
5263 sfk_move_constructor, /* A move constructor. */
5264 sfk_copy_assignment, /* A copy assignment operator. */
5265 sfk_move_assignment, /* A move assignment operator. */
5266 /* The following are unordered. */
5267 sfk_complete_destructor, /* A destructor for complete objects. */
5268 sfk_base_destructor, /* A destructor for base subobjects. */
5269 sfk_deleting_destructor, /* A destructor for complete objects that
5270 deletes the object after it has been
5271 destroyed. */
5272 sfk_conversion, /* A conversion operator. */
5273 sfk_deduction_guide, /* A class template deduction guide. */
5274 sfk_comparison, /* A comparison operator (e.g. ==, <, <=>). */
5275 sfk_virtual_destructor /* Used by member synthesis fns. */
5276 };
5277
5278 /* The various kinds of linkage. From [basic.link],
5279
5280 A name is said to have linkage when it might denote the same
5281 object, reference, function, type, template, namespace or value
5282 as a name introduced in another scope:
5283
5284 -- When a name has external linkage, the entity it denotes can
5285 be referred to from scopes of other translation units or from
5286 other scopes of the same translation unit.
5287
5288 -- When a name has internal linkage, the entity it denotes can
5289 be referred to by names from other scopes in the same
5290 translation unit.
5291
5292 -- When a name has no linkage, the entity it denotes cannot be
5293 referred to by names from other scopes. */
5294
5295 enum linkage_kind {
5296 lk_none, /* No linkage. */
5297 lk_internal, /* Internal linkage. */
5298 lk_external /* External linkage. */
5299 };
5300
5301 enum duration_kind {
5302 dk_static,
5303 dk_thread,
5304 dk_auto,
5305 dk_dynamic
5306 };
5307
5308 /* Bitmask flags to control type substitution. */
5309 enum tsubst_flags {
5310 tf_none = 0, /* nothing special */
5311 tf_error = 1 << 0, /* give error messages */
5312 tf_warning = 1 << 1, /* give warnings too */
5313 tf_ignore_bad_quals = 1 << 2, /* ignore bad cvr qualifiers */
5314 tf_keep_type_decl = 1 << 3, /* retain typedef type decls
5315 (make_typename_type use) */
5316 tf_ptrmem_ok = 1 << 4, /* pointers to member ok (internal
5317 instantiate_type use) */
5318 tf_user = 1 << 5, /* found template must be a user template
5319 (lookup_template_class use) */
5320 tf_conv = 1 << 6, /* We are determining what kind of
5321 conversion might be permissible,
5322 not actually performing the
5323 conversion. */
5324 tf_decltype = 1 << 7, /* We are the operand of decltype.
5325 Used to implement the special rules
5326 for calls in decltype (5.2.2/11). */
5327 tf_partial = 1 << 8, /* Doing initial explicit argument
5328 substitution in fn_type_unification. */
5329 tf_fndecl_type = 1 << 9, /* Substituting the type of a function
5330 declaration. */
5331 tf_no_cleanup = 1 << 10, /* Do not build a cleanup
5332 (build_target_expr and friends) */
5333 tf_norm = 1 << 11, /* Build diagnostic information during
5334 constraint normalization. */
5335 /* Convenient substitution flags combinations. */
5336 tf_warning_or_error = tf_warning | tf_error
5337 };
5338
5339 /* This type is used for parameters and variables which hold
5340 combinations of the flags in enum tsubst_flags. */
5341 typedef int tsubst_flags_t;
5342
5343 /* The kind of checking we can do looking in a class hierarchy. */
5344 enum base_access_flags {
5345 ba_any = 0, /* Do not check access, allow an ambiguous base,
5346 prefer a non-virtual base */
5347 ba_unique = 1 << 0, /* Must be a unique base. */
5348 ba_check_bit = 1 << 1, /* Check access. */
5349 ba_check = ba_unique | ba_check_bit,
5350 ba_ignore_scope = 1 << 2 /* Ignore access allowed by local scope. */
5351 };
5352
5353 /* This type is used for parameters and variables which hold
5354 combinations of the flags in enum base_access_flags. */
5355 typedef int base_access;
5356
5357 /* The various kinds of access check during parsing. */
5358 enum deferring_kind {
5359 dk_no_deferred = 0, /* Check access immediately */
5360 dk_deferred = 1, /* Deferred check */
5361 dk_no_check = 2 /* No access check */
5362 };
5363
5364 /* The kind of base we can find, looking in a class hierarchy.
5365 Values <0 indicate we failed. */
5366 enum base_kind {
5367 bk_inaccessible = -3, /* The base is inaccessible */
5368 bk_ambig = -2, /* The base is ambiguous */
5369 bk_not_base = -1, /* It is not a base */
5370 bk_same_type = 0, /* It is the same type */
5371 bk_proper_base = 1, /* It is a proper base */
5372 bk_via_virtual = 2 /* It is a proper base, but via a virtual
5373 path. This might not be the canonical
5374 binfo. */
5375 };
5376
5377 /* Node for "pointer to (virtual) function".
5378 This may be distinct from ptr_type_node so gdb can distinguish them. */
5379 #define vfunc_ptr_type_node vtable_entry_type
5380
5381
5382 /* For building calls to `delete'. */
5383 extern GTY(()) tree integer_two_node;
5384
5385 /* The number of function bodies which we are currently processing.
5386 (Zero if we are at namespace scope, one inside the body of a
5387 function, two inside the body of a function in a local class, etc.) */
5388 extern int function_depth;
5389
5390 /* Nonzero if we are inside eq_specializations, which affects comparison of
5391 PARM_DECLs in cp_tree_equal. */
5392 extern int comparing_specializations;
5393
5394 /* In parser.c. */
5395
5396 /* Nonzero if we are parsing an unevaluated operand: an operand to
5397 sizeof, typeof, or alignof. This is a count since operands to
5398 sizeof can be nested. */
5399
5400 extern int cp_unevaluated_operand;
5401
5402 /* RAII class used to inhibit the evaluation of operands during parsing
5403 and template instantiation. Evaluation warnings are also inhibited. */
5404
5405 class cp_unevaluated
5406 {
5407 public:
5408 cp_unevaluated ();
5409 ~cp_unevaluated ();
5410 };
5411
5412 /* The reverse: an RAII class used for nested contexts that are evaluated even
5413 if the enclosing context is not. */
5414
5415 class cp_evaluated
5416 {
5417 public:
5418 int uneval;
5419 int inhibit;
cp_evaluated()5420 cp_evaluated ()
5421 : uneval(cp_unevaluated_operand), inhibit(c_inhibit_evaluation_warnings)
5422 { cp_unevaluated_operand = c_inhibit_evaluation_warnings = 0; }
~cp_evaluated()5423 ~cp_evaluated ()
5424 { cp_unevaluated_operand = uneval;
5425 c_inhibit_evaluation_warnings = inhibit; }
5426 };
5427
5428 /* in pt.c */
5429
5430 /* These values are used for the `STRICT' parameter to type_unification and
5431 fn_type_unification. Their meanings are described with the
5432 documentation for fn_type_unification. */
5433
5434 enum unification_kind_t {
5435 DEDUCE_CALL,
5436 DEDUCE_CONV,
5437 DEDUCE_EXACT
5438 };
5439
5440 // An RAII class used to create a new pointer map for local
5441 // specializations. When the stack goes out of scope, the
5442 // previous pointer map is restored.
5443 enum lss_policy { lss_blank, lss_copy, lss_nop };
5444 class local_specialization_stack
5445 {
5446 public:
5447 local_specialization_stack (lss_policy = lss_blank);
5448 ~local_specialization_stack ();
5449
5450 hash_map<tree, tree> *saved;
5451 };
5452
5453 /* in class.c */
5454
5455 extern int current_class_depth;
5456
5457 /* in decl.c */
5458
5459 /* An array of static vars & fns. */
5460 extern GTY(()) vec<tree, va_gc> *static_decls;
5461
5462 /* An array of vtable-needing types that have no key function, or have
5463 an emitted key function. */
5464 extern GTY(()) vec<tree, va_gc> *keyed_classes;
5465
5466 /* Here's where we control how name mangling takes place. */
5467
5468 /* Cannot use '$' up front, because this confuses gdb
5469 (names beginning with '$' are gdb-local identifiers).
5470
5471 Note that all forms in which the '$' is significant are long enough
5472 for direct indexing (meaning that if we know there is a '$'
5473 at a particular location, we can index into the string at
5474 any other location that provides distinguishing characters). */
5475
5476 /* Define NO_DOT_IN_LABEL in your favorite tm file if your assembler
5477 doesn't allow '.' in symbol names. */
5478 #ifndef NO_DOT_IN_LABEL
5479
5480 #define JOINER '.'
5481 #define JOIN_STR "."
5482
5483 #define AUTO_TEMP_NAME "_.tmp_"
5484 #define VFIELD_BASE ".vf"
5485 #define VFIELD_NAME "_vptr."
5486 #define VFIELD_NAME_FORMAT "_vptr.%s"
5487
5488 #else /* NO_DOT_IN_LABEL */
5489
5490 #ifndef NO_DOLLAR_IN_LABEL
5491
5492 #define JOINER '$'
5493 #define JOIN_STR "$"
5494
5495 #define AUTO_TEMP_NAME "_$tmp_"
5496 #define VFIELD_BASE "$vf"
5497 #define VFIELD_NAME "_vptr$"
5498 #define VFIELD_NAME_FORMAT "_vptr$%s"
5499
5500 #else /* NO_DOLLAR_IN_LABEL */
5501
5502 #define JOIN_STR "_"
5503
5504 #define VTABLE_NAME "__vt_"
5505 #define VTABLE_NAME_P(ID_NODE) \
5506 (!strncmp (IDENTIFIER_POINTER (ID_NODE), VTABLE_NAME, \
5507 sizeof (VTABLE_NAME) - 1))
5508 #define VFIELD_BASE "__vfb"
5509 #define VFIELD_NAME "__vptr_"
5510 #define VFIELD_NAME_P(ID_NODE) \
5511 (!strncmp (IDENTIFIER_POINTER (ID_NODE), VFIELD_NAME, \
5512 sizeof (VFIELD_NAME) - 1))
5513 #define VFIELD_NAME_FORMAT "__vptr_%s"
5514
5515 #endif /* NO_DOLLAR_IN_LABEL */
5516 #endif /* NO_DOT_IN_LABEL */
5517
5518 #define UDLIT_OP_ANSI_PREFIX "operator\"\""
5519 #define UDLIT_OP_ANSI_FORMAT UDLIT_OP_ANSI_PREFIX "%s"
5520 #define UDLIT_OP_MANGLED_PREFIX "li"
5521 #define UDLIT_OP_MANGLED_FORMAT UDLIT_OP_MANGLED_PREFIX "%s"
5522 #define UDLIT_OPER_P(ID_NODE) \
5523 (!strncmp (IDENTIFIER_POINTER (ID_NODE), \
5524 UDLIT_OP_ANSI_PREFIX, \
5525 sizeof (UDLIT_OP_ANSI_PREFIX) - 1))
5526 #define UDLIT_OP_SUFFIX(ID_NODE) \
5527 (IDENTIFIER_POINTER (ID_NODE) + sizeof (UDLIT_OP_ANSI_PREFIX) - 1)
5528
5529 #if !defined(NO_DOLLAR_IN_LABEL) || !defined(NO_DOT_IN_LABEL)
5530
5531 #define VTABLE_NAME_P(ID_NODE) (IDENTIFIER_POINTER (ID_NODE)[1] == 'v' \
5532 && IDENTIFIER_POINTER (ID_NODE)[2] == 't' \
5533 && IDENTIFIER_POINTER (ID_NODE)[3] == JOINER)
5534
5535 #define VFIELD_NAME_P(ID_NODE) \
5536 (!strncmp (IDENTIFIER_POINTER (ID_NODE), VFIELD_NAME, sizeof(VFIELD_NAME)-1))
5537
5538 #endif /* !defined(NO_DOLLAR_IN_LABEL) || !defined(NO_DOT_IN_LABEL) */
5539
5540
5541 /* Nonzero if we're done parsing and into end-of-file activities.
5542 Two if we're done with front-end processing. */
5543
5544 extern int at_eof;
5545
5546 /* True if note_mangling_alias should enqueue mangling aliases for
5547 later generation, rather than emitting them right away. */
5548
5549 extern bool defer_mangling_aliases;
5550
5551 /* True if noexcept is part of the type (i.e. in C++17). */
5552
5553 extern bool flag_noexcept_type;
5554
5555 /* A list of namespace-scope objects which have constructors or
5556 destructors which reside in the global scope. The decl is stored
5557 in the TREE_VALUE slot and the initializer is stored in the
5558 TREE_PURPOSE slot. */
5559 extern GTY(()) tree static_aggregates;
5560 /* Likewise, for thread local storage. */
5561 extern GTY(()) tree tls_aggregates;
5562
5563 enum overload_flags { NO_SPECIAL = 0, DTOR_FLAG, TYPENAME_FLAG };
5564
5565 /* These are uses as bits in flags passed to various functions to
5566 control their behavior. Despite the LOOKUP_ prefix, many of these
5567 do not control name lookup. ??? Functions using these flags should
5568 probably be modified to accept explicit boolean flags for the
5569 behaviors relevant to them. */
5570 /* Check for access violations. */
5571 #define LOOKUP_PROTECT (1 << 0)
5572 #define LOOKUP_NORMAL (LOOKUP_PROTECT)
5573 /* Even if the function found by lookup is a virtual function, it
5574 should be called directly. */
5575 #define LOOKUP_NONVIRTUAL (1 << 1)
5576 /* Non-converting (i.e., "explicit") constructors are not tried. This flag
5577 indicates that we are not performing direct-initialization. */
5578 #define LOOKUP_ONLYCONVERTING (1 << 2)
5579 #define LOOKUP_IMPLICIT (LOOKUP_NORMAL | LOOKUP_ONLYCONVERTING)
5580 /* If a temporary is created, it should be created so that it lives
5581 as long as the current variable bindings; otherwise it only lives
5582 until the end of the complete-expression. It also forces
5583 direct-initialization in cases where other parts of the compiler
5584 have already generated a temporary, such as reference
5585 initialization and the catch parameter. */
5586 #define DIRECT_BIND (1 << 3)
5587 /* We're performing a user-defined conversion, so more user-defined
5588 conversions are not permitted (only built-in conversions). */
5589 #define LOOKUP_NO_CONVERSION (1 << 4)
5590 /* The user has explicitly called a destructor. (Therefore, we do
5591 not need to check that the object is non-NULL before calling the
5592 destructor.) */
5593 #define LOOKUP_DESTRUCTOR (1 << 5)
5594 /* Do not permit references to bind to temporaries. */
5595 #define LOOKUP_NO_TEMP_BIND (1 << 6)
5596 /* Do not accept objects, and possibly namespaces. */
5597 #define LOOKUP_PREFER_TYPES (1 << 7)
5598 /* Do not accept objects, and possibly types. */
5599 #define LOOKUP_PREFER_NAMESPACES (1 << 8)
5600 /* Accept types or namespaces. */
5601 #define LOOKUP_PREFER_BOTH (LOOKUP_PREFER_TYPES | LOOKUP_PREFER_NAMESPACES)
5602 /* Return friend declarations and un-declared builtin functions.
5603 (Normally, these entities are registered in the symbol table, but
5604 not found by lookup.) */
5605 #define LOOKUP_HIDDEN (LOOKUP_PREFER_NAMESPACES << 1)
5606 /* We're trying to treat an lvalue as an rvalue. */
5607 #define LOOKUP_PREFER_RVALUE (LOOKUP_HIDDEN << 1)
5608 /* We're inside an init-list, so narrowing conversions are ill-formed. */
5609 #define LOOKUP_NO_NARROWING (LOOKUP_PREFER_RVALUE << 1)
5610 /* We're looking up a constructor for list-initialization. */
5611 #define LOOKUP_LIST_INIT_CTOR (LOOKUP_NO_NARROWING << 1)
5612 /* This is the first parameter of a copy constructor. */
5613 #define LOOKUP_COPY_PARM (LOOKUP_LIST_INIT_CTOR << 1)
5614 /* We only want to consider list constructors. */
5615 #define LOOKUP_LIST_ONLY (LOOKUP_COPY_PARM << 1)
5616 /* Return after determining which function to call and checking access.
5617 Used by sythesized_method_walk to determine which functions will
5618 be called to initialize subobjects, in order to determine exception
5619 specification and possible implicit delete.
5620 This is kind of a hack, but exiting early avoids problems with trying
5621 to perform argument conversions when the class isn't complete yet. */
5622 #define LOOKUP_SPECULATIVE (LOOKUP_LIST_ONLY << 1)
5623 /* Used by calls from defaulted functions to limit the overload set to avoid
5624 cycles trying to declare them (core issue 1092). */
5625 #define LOOKUP_DEFAULTED (LOOKUP_SPECULATIVE << 1)
5626 /* Used in calls to store_init_value to suppress its usual call to
5627 digest_init. */
5628 #define LOOKUP_ALREADY_DIGESTED (LOOKUP_DEFAULTED << 1)
5629 /* An instantiation with explicit template arguments. */
5630 #define LOOKUP_EXPLICIT_TMPL_ARGS (LOOKUP_ALREADY_DIGESTED << 1)
5631 /* Like LOOKUP_NO_TEMP_BIND, but also prevent binding to xvalues. */
5632 #define LOOKUP_NO_RVAL_BIND (LOOKUP_EXPLICIT_TMPL_ARGS << 1)
5633 /* Used by case_conversion to disregard non-integral conversions. */
5634 #define LOOKUP_NO_NON_INTEGRAL (LOOKUP_NO_RVAL_BIND << 1)
5635 /* Used for delegating constructors in order to diagnose self-delegation. */
5636 #define LOOKUP_DELEGATING_CONS (LOOKUP_NO_NON_INTEGRAL << 1)
5637 /* Allow initialization of a flexible array members. */
5638 #define LOOKUP_ALLOW_FLEXARRAY_INIT (LOOKUP_DELEGATING_CONS << 1)
5639 /* Require constant initialization of a non-constant variable. */
5640 #define LOOKUP_CONSTINIT (LOOKUP_ALLOW_FLEXARRAY_INIT << 1)
5641 /* We're looking for either a rewritten comparison operator candidate or the
5642 operator to use on the former's result. We distinguish between the two by
5643 knowing that comparisons other than == and <=> must be the latter, as must
5644 a <=> expression trying to rewrite to <=> without reversing. */
5645 #define LOOKUP_REWRITTEN (LOOKUP_CONSTINIT << 1)
5646 /* Reverse the order of the two arguments for comparison rewriting. First we
5647 swap the arguments in add_operator_candidates, then we swap the conversions
5648 in add_candidate (so that they correspond to the original order of the
5649 args), then we swap the conversions back in build_new_op_1 (so they
5650 correspond to the order of the args in the candidate). */
5651 #define LOOKUP_REVERSED (LOOKUP_REWRITTEN << 1)
5652 /* We're initializing an aggregate from a parenthesized list of values. */
5653 #define LOOKUP_AGGREGATE_PAREN_INIT (LOOKUP_REVERSED << 1)
5654
5655 #define LOOKUP_NAMESPACES_ONLY(F) \
5656 (((F) & LOOKUP_PREFER_NAMESPACES) && !((F) & LOOKUP_PREFER_TYPES))
5657 #define LOOKUP_TYPES_ONLY(F) \
5658 (!((F) & LOOKUP_PREFER_NAMESPACES) && ((F) & LOOKUP_PREFER_TYPES))
5659 #define LOOKUP_QUALIFIERS_ONLY(F) ((F) & LOOKUP_PREFER_BOTH)
5660
5661
5662 /* These flags are used by the conversion code.
5663 CONV_IMPLICIT : Perform implicit conversions (standard and user-defined).
5664 CONV_STATIC : Perform the explicit conversions for static_cast.
5665 CONV_CONST : Perform the explicit conversions for const_cast.
5666 CONV_REINTERPRET: Perform the explicit conversions for reinterpret_cast.
5667 CONV_PRIVATE : Perform upcasts to private bases.
5668 CONV_FORCE_TEMP : Require a new temporary when converting to the same
5669 aggregate type. */
5670
5671 #define CONV_IMPLICIT 1
5672 #define CONV_STATIC 2
5673 #define CONV_CONST 4
5674 #define CONV_REINTERPRET 8
5675 #define CONV_PRIVATE 16
5676 #define CONV_FORCE_TEMP 32
5677 #define CONV_FOLD 64
5678 #define CONV_OLD_CONVERT (CONV_IMPLICIT | CONV_STATIC | CONV_CONST \
5679 | CONV_REINTERPRET)
5680 #define CONV_C_CAST (CONV_IMPLICIT | CONV_STATIC | CONV_CONST \
5681 | CONV_REINTERPRET | CONV_PRIVATE | CONV_FORCE_TEMP)
5682 #define CONV_BACKEND_CONVERT (CONV_OLD_CONVERT | CONV_FOLD)
5683
5684 /* Used by build_expr_type_conversion to indicate which types are
5685 acceptable as arguments to the expression under consideration. */
5686
5687 #define WANT_INT 1 /* integer types, including bool */
5688 #define WANT_FLOAT 2 /* floating point types */
5689 #define WANT_ENUM 4 /* enumerated types */
5690 #define WANT_POINTER 8 /* pointer types */
5691 #define WANT_NULL 16 /* null pointer constant */
5692 #define WANT_VECTOR_OR_COMPLEX 32 /* vector or complex types */
5693 #define WANT_ARITH (WANT_INT | WANT_FLOAT | WANT_VECTOR_OR_COMPLEX)
5694
5695 /* Used with comptypes, and related functions, to guide type
5696 comparison. */
5697
5698 #define COMPARE_STRICT 0 /* Just check if the types are the
5699 same. */
5700 #define COMPARE_BASE 1 /* Check to see if the second type is
5701 derived from the first. */
5702 #define COMPARE_DERIVED 2 /* Like COMPARE_BASE, but in
5703 reverse. */
5704 #define COMPARE_REDECLARATION 4 /* The comparison is being done when
5705 another declaration of an existing
5706 entity is seen. */
5707 #define COMPARE_STRUCTURAL 8 /* The comparison is intended to be
5708 structural. The actual comparison
5709 will be identical to
5710 COMPARE_STRICT. */
5711
5712 /* Used with start function. */
5713 #define SF_DEFAULT 0 /* No flags. */
5714 #define SF_PRE_PARSED 1 /* The function declaration has
5715 already been parsed. */
5716 #define SF_INCLASS_INLINE 2 /* The function is an inline, defined
5717 in the class body. */
5718
5719 /* Used with start_decl's initialized parameter. */
5720 #define SD_UNINITIALIZED 0
5721 #define SD_INITIALIZED 1
5722 #define SD_DEFAULTED 2
5723 #define SD_DELETED 3
5724
5725 /* Returns nonzero iff TYPE1 and TYPE2 are the same type, or if TYPE2
5726 is derived from TYPE1, or if TYPE2 is a pointer (reference) to a
5727 class derived from the type pointed to (referred to) by TYPE1. */
5728 #define same_or_base_type_p(TYPE1, TYPE2) \
5729 comptypes ((TYPE1), (TYPE2), COMPARE_BASE)
5730
5731 /* These macros are used to access a TEMPLATE_PARM_INDEX. */
5732 #define TEMPLATE_PARM_INDEX_CAST(NODE) \
5733 ((template_parm_index*)TEMPLATE_PARM_INDEX_CHECK (NODE))
5734 #define TEMPLATE_PARM_IDX(NODE) (TEMPLATE_PARM_INDEX_CAST (NODE)->index)
5735 #define TEMPLATE_PARM_LEVEL(NODE) (TEMPLATE_PARM_INDEX_CAST (NODE)->level)
5736 #define TEMPLATE_PARM_DESCENDANTS(NODE) (TREE_CHAIN (NODE))
5737 #define TEMPLATE_PARM_ORIG_LEVEL(NODE) (TEMPLATE_PARM_INDEX_CAST (NODE)->orig_level)
5738 #define TEMPLATE_PARM_DECL(NODE) (TEMPLATE_PARM_INDEX_CAST (NODE)->decl)
5739 #define TEMPLATE_PARM_PARAMETER_PACK(NODE) \
5740 (TREE_LANG_FLAG_0 (TEMPLATE_PARM_INDEX_CHECK (NODE)))
5741
5742 /* These macros are for accessing the fields of TEMPLATE_TYPE_PARM,
5743 TEMPLATE_TEMPLATE_PARM and BOUND_TEMPLATE_TEMPLATE_PARM nodes. */
5744 #define TEMPLATE_TYPE_PARM_INDEX(NODE) \
5745 (TYPE_VALUES_RAW (TREE_CHECK3 ((NODE), TEMPLATE_TYPE_PARM, \
5746 TEMPLATE_TEMPLATE_PARM, \
5747 BOUND_TEMPLATE_TEMPLATE_PARM)))
5748 #define TEMPLATE_TYPE_IDX(NODE) \
5749 (TEMPLATE_PARM_IDX (TEMPLATE_TYPE_PARM_INDEX (NODE)))
5750 #define TEMPLATE_TYPE_LEVEL(NODE) \
5751 (TEMPLATE_PARM_LEVEL (TEMPLATE_TYPE_PARM_INDEX (NODE)))
5752 #define TEMPLATE_TYPE_ORIG_LEVEL(NODE) \
5753 (TEMPLATE_PARM_ORIG_LEVEL (TEMPLATE_TYPE_PARM_INDEX (NODE)))
5754 #define TEMPLATE_TYPE_DECL(NODE) \
5755 (TEMPLATE_PARM_DECL (TEMPLATE_TYPE_PARM_INDEX (NODE)))
5756 #define TEMPLATE_TYPE_PARAMETER_PACK(NODE) \
5757 (TEMPLATE_PARM_PARAMETER_PACK (TEMPLATE_TYPE_PARM_INDEX (NODE)))
5758
5759 /* For a C++17 class deduction placeholder, the template it represents. */
5760 #define CLASS_PLACEHOLDER_TEMPLATE(NODE) \
5761 (DECL_INITIAL (TYPE_NAME (TEMPLATE_TYPE_PARM_CHECK (NODE))))
5762
5763 /* Contexts in which auto deduction occurs. These flags are
5764 used to control diagnostics in do_auto_deduction. */
5765
5766 enum auto_deduction_context
5767 {
5768 adc_unspecified, /* Not given */
5769 adc_variable_type, /* Variable initializer deduction */
5770 adc_return_type, /* Return type deduction */
5771 adc_unify, /* Template argument deduction */
5772 adc_requirement, /* Argument deduction constraint */
5773 adc_decomp_type /* Decomposition declaration initializer deduction */
5774 };
5775
5776 /* True if this type-parameter belongs to a class template, used by C++17
5777 class template argument deduction. */
5778 #define TEMPLATE_TYPE_PARM_FOR_CLASS(NODE) \
5779 (TREE_LANG_FLAG_0 (TEMPLATE_TYPE_PARM_CHECK (NODE)))
5780
5781 /* True iff this TEMPLATE_TYPE_PARM represents decltype(auto). */
5782 #define AUTO_IS_DECLTYPE(NODE) \
5783 (TYPE_LANG_FLAG_5 (TEMPLATE_TYPE_PARM_CHECK (NODE)))
5784
5785 /* These constants can used as bit flags in the process of tree formatting.
5786
5787 TFF_PLAIN_IDENTIFIER: unqualified part of a name.
5788 TFF_SCOPE: include the class and namespace scope of the name.
5789 TFF_CHASE_TYPEDEF: print the original type-id instead of the typedef-name.
5790 TFF_DECL_SPECIFIERS: print decl-specifiers.
5791 TFF_CLASS_KEY_OR_ENUM: precede a class-type name (resp. enum name) with
5792 a class-key (resp. `enum').
5793 TFF_RETURN_TYPE: include function return type.
5794 TFF_FUNCTION_DEFAULT_ARGUMENTS: include function default parameter values.
5795 TFF_EXCEPTION_SPECIFICATION: show function exception specification.
5796 TFF_TEMPLATE_HEADER: show the template<...> header in a
5797 template-declaration.
5798 TFF_TEMPLATE_NAME: show only template-name.
5799 TFF_EXPR_IN_PARENS: parenthesize expressions.
5800 TFF_NO_FUNCTION_ARGUMENTS: don't show function arguments.
5801 TFF_UNQUALIFIED_NAME: do not print the qualifying scope of the
5802 top-level entity.
5803 TFF_NO_OMIT_DEFAULT_TEMPLATE_ARGUMENTS: do not omit template arguments
5804 identical to their defaults.
5805 TFF_NO_TEMPLATE_BINDINGS: do not print information about the template
5806 arguments for a function template specialization.
5807 TFF_POINTER: we are printing a pointer type. */
5808
5809 #define TFF_PLAIN_IDENTIFIER (0)
5810 #define TFF_SCOPE (1)
5811 #define TFF_CHASE_TYPEDEF (1 << 1)
5812 #define TFF_DECL_SPECIFIERS (1 << 2)
5813 #define TFF_CLASS_KEY_OR_ENUM (1 << 3)
5814 #define TFF_RETURN_TYPE (1 << 4)
5815 #define TFF_FUNCTION_DEFAULT_ARGUMENTS (1 << 5)
5816 #define TFF_EXCEPTION_SPECIFICATION (1 << 6)
5817 #define TFF_TEMPLATE_HEADER (1 << 7)
5818 #define TFF_TEMPLATE_NAME (1 << 8)
5819 #define TFF_EXPR_IN_PARENS (1 << 9)
5820 #define TFF_NO_FUNCTION_ARGUMENTS (1 << 10)
5821 #define TFF_UNQUALIFIED_NAME (1 << 11)
5822 #define TFF_NO_OMIT_DEFAULT_TEMPLATE_ARGUMENTS (1 << 12)
5823 #define TFF_NO_TEMPLATE_BINDINGS (1 << 13)
5824 #define TFF_POINTER (1 << 14)
5825
5826 /* These constants can be used as bit flags to control strip_typedefs.
5827
5828 STF_USER_VISIBLE: use heuristics to try to avoid stripping user-facing
5829 aliases of internal details. This is intended for diagnostics,
5830 where it should (for example) give more useful "aka" types.
5831
5832 STF_STRIP_DEPENDENT: allow the stripping of aliases with dependent
5833 template parameters, relying on code elsewhere to report any
5834 appropriate diagnostics. */
5835 const unsigned int STF_USER_VISIBLE = 1U;
5836 const unsigned int STF_STRIP_DEPENDENT = 1U << 1;
5837
5838 /* Returns the TEMPLATE_DECL associated to a TEMPLATE_TEMPLATE_PARM
5839 node. */
5840 #define TEMPLATE_TEMPLATE_PARM_TEMPLATE_DECL(NODE) \
5841 ((TREE_CODE (NODE) == BOUND_TEMPLATE_TEMPLATE_PARM) \
5842 ? TYPE_TI_TEMPLATE (NODE) \
5843 : TYPE_NAME (NODE))
5844
5845 /* in lex.c */
5846
5847 extern void init_reswords (void);
5848
5849 /* Various flags for the overloaded operator information. */
5850 enum ovl_op_flags
5851 {
5852 OVL_OP_FLAG_NONE = 0, /* Don't care. */
5853 OVL_OP_FLAG_UNARY = 1, /* Is unary. */
5854 OVL_OP_FLAG_BINARY = 2, /* Is binary. */
5855 OVL_OP_FLAG_AMBIARY = 3, /* May be unary or binary. */
5856 OVL_OP_FLAG_ALLOC = 4, /* operator new or delete. */
5857 OVL_OP_FLAG_DELETE = 1, /* operator delete. */
5858 OVL_OP_FLAG_VEC = 2 /* vector new or delete. */
5859 };
5860
5861 /* Compressed operator codes. Order is determined by operators.def
5862 and does not match that of tree_codes. */
5863 enum ovl_op_code
5864 {
5865 OVL_OP_ERROR_MARK,
5866 OVL_OP_NOP_EXPR,
5867 #define DEF_OPERATOR(NAME, CODE, MANGLING, FLAGS) OVL_OP_##CODE,
5868 #define DEF_ASSN_OPERATOR(NAME, CODE, MANGLING) /* NOTHING */
5869 #include "operators.def"
5870 OVL_OP_MAX
5871 };
5872
5873 struct GTY(()) ovl_op_info_t {
5874 /* The IDENTIFIER_NODE for the operator. */
5875 tree identifier;
5876 /* The name of the operator. */
5877 const char *name;
5878 /* The mangled name of the operator. */
5879 const char *mangled_name;
5880 /* The (regular) tree code. */
5881 enum tree_code tree_code : 16;
5882 /* The (compressed) operator code. */
5883 enum ovl_op_code ovl_op_code : 8;
5884 /* The ovl_op_flags of the operator */
5885 unsigned flags : 8;
5886 };
5887
5888 /* Overloaded operator info indexed by ass_op_p & ovl_op_code. */
5889 extern GTY(()) ovl_op_info_t ovl_op_info[2][OVL_OP_MAX];
5890 /* Mapping from tree_codes to ovl_op_codes. */
5891 extern GTY(()) unsigned char ovl_op_mapping[MAX_TREE_CODES];
5892 /* Mapping for ambi-ary operators from the binary to the unary. */
5893 extern GTY(()) unsigned char ovl_op_alternate[OVL_OP_MAX];
5894
5895 /* Given an ass_op_p boolean and a tree code, return a pointer to its
5896 overloaded operator info. Tree codes for non-overloaded operators
5897 map to the error-operator. */
5898 #define OVL_OP_INFO(IS_ASS_P, TREE_CODE) \
5899 (&ovl_op_info[(IS_ASS_P) != 0][ovl_op_mapping[(TREE_CODE)]])
5900 /* Overloaded operator info for an identifier for which
5901 IDENTIFIER_OVL_OP_P is true. */
5902 #define IDENTIFIER_OVL_OP_INFO(NODE) \
5903 (&ovl_op_info[IDENTIFIER_KIND_BIT_0 (NODE)][IDENTIFIER_CP_INDEX (NODE)])
5904 #define IDENTIFIER_OVL_OP_FLAGS(NODE) \
5905 (IDENTIFIER_OVL_OP_INFO (NODE)->flags)
5906
ovl_op_identifier(bool isass,tree_code code)5907 inline tree ovl_op_identifier (bool isass, tree_code code)
5908 { return OVL_OP_INFO(isass, code)->identifier; }
ovl_op_identifier(tree_code code)5909 inline tree ovl_op_identifier (tree_code code) { return ovl_op_identifier (false, code); }
5910 #define assign_op_identifier (ovl_op_info[true][OVL_OP_NOP_EXPR].identifier)
5911 #define call_op_identifier (ovl_op_info[false][OVL_OP_CALL_EXPR].identifier)
5912
5913 /* A type-qualifier, or bitmask therefore, using the TYPE_QUAL
5914 constants. */
5915
5916 typedef int cp_cv_quals;
5917
5918 /* Non-static member functions have an optional virt-specifier-seq.
5919 There is a VIRT_SPEC value for each virt-specifier.
5920 They can be combined by bitwise-or to form the complete set of
5921 virt-specifiers for a member function. */
5922 enum virt_specifier
5923 {
5924 VIRT_SPEC_UNSPECIFIED = 0x0,
5925 VIRT_SPEC_FINAL = 0x1,
5926 VIRT_SPEC_OVERRIDE = 0x2
5927 };
5928
5929 /* A type-qualifier, or bitmask therefore, using the VIRT_SPEC
5930 constants. */
5931
5932 typedef int cp_virt_specifiers;
5933
5934 /* Wherever there is a function-cv-qual, there could also be a ref-qualifier:
5935
5936 [dcl.fct]
5937 The return type, the parameter-type-list, the ref-qualifier, and
5938 the cv-qualifier-seq, but not the default arguments or the exception
5939 specification, are part of the function type.
5940
5941 REF_QUAL_NONE Ordinary member function with no ref-qualifier
5942 REF_QUAL_LVALUE Member function with the &-ref-qualifier
5943 REF_QUAL_RVALUE Member function with the &&-ref-qualifier */
5944
5945 enum cp_ref_qualifier {
5946 REF_QUAL_NONE = 0,
5947 REF_QUAL_LVALUE = 1,
5948 REF_QUAL_RVALUE = 2
5949 };
5950
5951 /* A storage class. */
5952
5953 enum cp_storage_class {
5954 /* sc_none must be zero so that zeroing a cp_decl_specifier_seq
5955 sets the storage_class field to sc_none. */
5956 sc_none = 0,
5957 sc_auto,
5958 sc_register,
5959 sc_static,
5960 sc_extern,
5961 sc_mutable
5962 };
5963
5964 /* An individual decl-specifier. This is used to index the array of
5965 locations for the declspecs in struct cp_decl_specifier_seq
5966 below. */
5967
5968 enum cp_decl_spec {
5969 ds_first,
5970 ds_signed = ds_first,
5971 ds_unsigned,
5972 ds_short,
5973 ds_long,
5974 ds_const,
5975 ds_volatile,
5976 ds_restrict,
5977 ds_inline,
5978 ds_virtual,
5979 ds_explicit,
5980 ds_friend,
5981 ds_typedef,
5982 ds_alias,
5983 ds_constexpr,
5984 ds_complex,
5985 ds_constinit,
5986 ds_consteval,
5987 ds_thread,
5988 ds_type_spec,
5989 ds_redefined_builtin_type_spec,
5990 ds_attribute,
5991 ds_std_attribute,
5992 ds_storage_class,
5993 ds_long_long,
5994 ds_concept,
5995 ds_last /* This enumerator must always be the last one. */
5996 };
5997
5998 /* A decl-specifier-seq. */
5999
6000 struct cp_decl_specifier_seq {
6001 /* An array of locations for the declaration sepecifiers, indexed by
6002 enum cp_decl_spec_word. */
6003 location_t locations[ds_last];
6004 /* The primary type, if any, given by the decl-specifier-seq.
6005 Modifiers, like "short", "const", and "unsigned" are not
6006 reflected here. This field will be a TYPE, unless a typedef-name
6007 was used, in which case it will be a TYPE_DECL. */
6008 tree type;
6009 /* The attributes, if any, provided with the specifier sequence. */
6010 tree attributes;
6011 /* The c++11 attributes that follows the type specifier. */
6012 tree std_attributes;
6013 /* If non-NULL, a built-in type that the user attempted to redefine
6014 to some other type. */
6015 tree redefined_builtin_type;
6016 /* The explicit-specifier, if any. */
6017 tree explicit_specifier;
6018 /* The storage class specified -- or sc_none if no storage class was
6019 explicitly specified. */
6020 cp_storage_class storage_class;
6021 /* For the __intN declspec, this stores the index into the int_n_* arrays. */
6022 int int_n_idx;
6023 /* True iff TYPE_SPEC defines a class or enum. */
6024 BOOL_BITFIELD type_definition_p : 1;
6025 /* True iff multiple types were (erroneously) specified for this
6026 decl-specifier-seq. */
6027 BOOL_BITFIELD multiple_types_p : 1;
6028 /* True iff multiple storage classes were (erroneously) specified
6029 for this decl-specifier-seq or a combination of a storage class
6030 with a typedef specifier. */
6031 BOOL_BITFIELD conflicting_specifiers_p : 1;
6032 /* True iff at least one decl-specifier was found. */
6033 BOOL_BITFIELD any_specifiers_p : 1;
6034 /* True iff at least one type-specifier was found. */
6035 BOOL_BITFIELD any_type_specifiers_p : 1;
6036 /* True iff "int" was explicitly provided. */
6037 BOOL_BITFIELD explicit_int_p : 1;
6038 /* True iff "__intN" was explicitly provided. */
6039 BOOL_BITFIELD explicit_intN_p : 1;
6040 /* True iff "char" was explicitly provided. */
6041 BOOL_BITFIELD explicit_char_p : 1;
6042 /* True iff ds_thread is set for __thread, not thread_local. */
6043 BOOL_BITFIELD gnu_thread_keyword_p : 1;
6044 /* True iff the type is a decltype. */
6045 BOOL_BITFIELD decltype_p : 1;
6046 /* True iff the alternate "__intN__" form of the __intN type has been
6047 used. */
6048 BOOL_BITFIELD int_n_alt: 1;
6049 };
6050
6051 /* The various kinds of declarators. */
6052
6053 enum cp_declarator_kind {
6054 cdk_id,
6055 cdk_function,
6056 cdk_array,
6057 cdk_pointer,
6058 cdk_reference,
6059 cdk_ptrmem,
6060 cdk_decomp,
6061 cdk_error
6062 };
6063
6064 /* A declarator. */
6065
6066 typedef struct cp_declarator cp_declarator;
6067
6068 typedef struct cp_parameter_declarator cp_parameter_declarator;
6069
6070 /* A parameter, before it has been semantically analyzed. */
6071 struct cp_parameter_declarator {
6072 /* The next parameter, or NULL_TREE if none. */
6073 cp_parameter_declarator *next;
6074 /* The decl-specifiers-seq for the parameter. */
6075 cp_decl_specifier_seq decl_specifiers;
6076 /* The declarator for the parameter. */
6077 cp_declarator *declarator;
6078 /* The default-argument expression, or NULL_TREE, if none. */
6079 tree default_argument;
6080 /* True iff this is a template parameter pack. */
6081 bool template_parameter_pack_p;
6082 /* Location within source. */
6083 location_t loc;
6084 };
6085
6086 /* A declarator. */
6087 struct cp_declarator {
6088 /* The kind of declarator. */
6089 ENUM_BITFIELD (cp_declarator_kind) kind : 4;
6090 /* Whether we parsed an ellipsis (`...') just before the declarator,
6091 to indicate this is a parameter pack. */
6092 BOOL_BITFIELD parameter_pack_p : 1;
6093 /* If this declarator is parenthesized, this the open-paren. It is
6094 UNKNOWN_LOCATION when not parenthesized. */
6095 location_t parenthesized;
6096
6097 location_t id_loc; /* Currently only set for cdk_id, cdk_decomp and
6098 cdk_function. */
6099 /* GNU Attributes that apply to this declarator. If the declarator
6100 is a pointer or a reference, these attribute apply to the type
6101 pointed to. */
6102 tree attributes;
6103 /* Standard C++11 attributes that apply to this declarator. If the
6104 declarator is a pointer or a reference, these attributes apply
6105 to the pointer, rather than to the type pointed to. */
6106 tree std_attributes;
6107 /* For all but cdk_id, cdk_decomp and cdk_error, the contained declarator.
6108 For cdk_id, cdk_decomp and cdk_error, guaranteed to be NULL. */
6109 cp_declarator *declarator;
6110 union {
6111 /* For identifiers. */
6112 struct {
6113 /* If non-NULL, the qualifying scope (a NAMESPACE_DECL or
6114 *_TYPE) for this identifier. */
6115 tree qualifying_scope;
6116 /* The unqualified name of the entity -- an IDENTIFIER_NODE,
6117 BIT_NOT_EXPR, or TEMPLATE_ID_EXPR. */
6118 tree unqualified_name;
6119 /* If this is the name of a function, what kind of special
6120 function (if any). */
6121 special_function_kind sfk;
6122 } id;
6123 /* For functions. */
6124 struct {
6125 /* The parameters to the function as a TREE_LIST of decl/default. */
6126 tree parameters;
6127 /* The cv-qualifiers for the function. */
6128 cp_cv_quals qualifiers;
6129 /* The virt-specifiers for the function. */
6130 cp_virt_specifiers virt_specifiers;
6131 /* The ref-qualifier for the function. */
6132 cp_ref_qualifier ref_qualifier;
6133 /* The transaction-safety qualifier for the function. */
6134 tree tx_qualifier;
6135 /* The exception-specification for the function. */
6136 tree exception_specification;
6137 /* The late-specified return type, if any. */
6138 tree late_return_type;
6139 /* The trailing requires-clause, if any. */
6140 tree requires_clause;
6141 } function;
6142 /* For arrays. */
6143 struct {
6144 /* The bounds to the array. */
6145 tree bounds;
6146 } array;
6147 /* For cdk_pointer and cdk_ptrmem. */
6148 struct {
6149 /* The cv-qualifiers for the pointer. */
6150 cp_cv_quals qualifiers;
6151 /* For cdk_ptrmem, the class type containing the member. */
6152 tree class_type;
6153 } pointer;
6154 /* For cdk_reference */
6155 struct {
6156 /* The cv-qualifiers for the reference. These qualifiers are
6157 only used to diagnose ill-formed code. */
6158 cp_cv_quals qualifiers;
6159 /* Whether this is an rvalue reference */
6160 bool rvalue_ref;
6161 } reference;
6162 } u;
6163 };
6164
6165 /* A level of template instantiation. */
6166 struct GTY((chain_next ("%h.next"))) tinst_level {
6167 /* The immediately deeper level in the chain. */
6168 struct tinst_level *next;
6169
6170 /* The original node. TLDCL can be a DECL (for a function or static
6171 data member), a TYPE (for a class), depending on what we were
6172 asked to instantiate, or a TREE_LIST with the template as PURPOSE
6173 and the template args as VALUE, if we are substituting for
6174 overload resolution. In all these cases, TARGS is NULL.
6175 However, to avoid creating TREE_LIST objects for substitutions if
6176 we can help, we store PURPOSE and VALUE in TLDCL and TARGS,
6177 respectively. So TLDCL stands for TREE_LIST or DECL (the
6178 template is a DECL too), whereas TARGS stands for the template
6179 arguments. */
6180 tree tldcl, targs;
6181
6182 private:
6183 /* Return TRUE iff the original node is a split list. */
split_list_ptinst_level6184 bool split_list_p () const { return targs; }
6185
6186 /* Return TRUE iff the original node is a TREE_LIST object. */
tree_list_ptinst_level6187 bool tree_list_p () const
6188 {
6189 return !split_list_p () && TREE_CODE (tldcl) == TREE_LIST;
6190 }
6191
6192 /* Return TRUE iff the original node is not a list, split or not. */
not_list_ptinst_level6193 bool not_list_p () const
6194 {
6195 return !split_list_p () && !tree_list_p ();
6196 }
6197
6198 /* Convert (in place) the original node from a split list to a
6199 TREE_LIST. */
6200 tree to_list ();
6201
6202 public:
6203 /* Release storage for OBJ and node, if it's a TREE_LIST. */
6204 static void free (tinst_level *obj);
6205
6206 /* Return TRUE iff the original node is a list, split or not. */
list_ptinst_level6207 bool list_p () const { return !not_list_p (); }
6208
6209 /* Return the original node; if it's a split list, make it a
6210 TREE_LIST first, so that it can be returned as a single tree
6211 object. */
get_nodetinst_level6212 tree get_node () {
6213 if (!split_list_p ()) return tldcl;
6214 else return to_list ();
6215 }
6216
6217 /* Return the original node if it's a DECL or a TREE_LIST, but do
6218 NOT convert a split list to a TREE_LIST: return NULL instead. */
maybe_get_nodetinst_level6219 tree maybe_get_node () const {
6220 if (!split_list_p ()) return tldcl;
6221 else return NULL_TREE;
6222 }
6223
6224 /* The location where the template is instantiated. */
6225 location_t locus;
6226
6227 /* errorcount + sorrycount when we pushed this level. */
6228 unsigned short errors;
6229
6230 /* Count references to this object. If refcount reaches
6231 refcount_infinity value, we don't increment or decrement the
6232 refcount anymore, as the refcount isn't accurate anymore.
6233 The object can be still garbage collected if unreferenced from
6234 anywhere, which might keep referenced objects referenced longer than
6235 otherwise necessary. Hitting the infinity is rare though. */
6236 unsigned short refcount;
6237
6238 /* Infinity value for the above refcount. */
6239 static const unsigned short refcount_infinity = (unsigned short) ~0;
6240 };
6241
6242 /* BUILT_IN_FRONTEND function codes. */
6243 enum cp_built_in_function {
6244 CP_BUILT_IN_IS_CONSTANT_EVALUATED,
6245 CP_BUILT_IN_INTEGER_PACK,
6246 CP_BUILT_IN_SOURCE_LOCATION,
6247 CP_BUILT_IN_LAST
6248 };
6249
6250 bool decl_spec_seq_has_spec_p (const cp_decl_specifier_seq *, cp_decl_spec);
6251
6252 /* Return the type of the `this' parameter of FNTYPE. */
6253
6254 inline tree
type_of_this_parm(const_tree fntype)6255 type_of_this_parm (const_tree fntype)
6256 {
6257 function_args_iterator iter;
6258 gcc_assert (TREE_CODE (fntype) == METHOD_TYPE);
6259 function_args_iter_init (&iter, fntype);
6260 return function_args_iter_cond (&iter);
6261 }
6262
6263 /* Return the class of the `this' parameter of FNTYPE. */
6264
6265 inline tree
class_of_this_parm(const_tree fntype)6266 class_of_this_parm (const_tree fntype)
6267 {
6268 return TREE_TYPE (type_of_this_parm (fntype));
6269 }
6270
6271 /* A parameter list indicating for a function with no parameters,
6272 e.g "int f(void)". */
6273 extern cp_parameter_declarator *no_parameters;
6274
6275 /* Various dump ids. */
6276 extern int class_dump_id;
6277 extern int raw_dump_id;
6278
6279 /* in call.c */
6280 extern bool check_dtor_name (tree, tree);
6281 int magic_varargs_p (tree);
6282
6283 extern tree build_conditional_expr (const op_location_t &,
6284 tree, tree, tree,
6285 tsubst_flags_t);
6286 extern tree build_addr_func (tree, tsubst_flags_t);
6287 extern void set_flags_from_callee (tree);
6288 extern tree build_call_a (tree, int, tree*);
6289 extern tree build_call_n (tree, int, ...);
6290 extern bool null_ptr_cst_p (tree);
6291 extern bool null_member_pointer_value_p (tree);
6292 extern bool sufficient_parms_p (const_tree);
6293 extern tree type_decays_to (tree);
6294 extern tree extract_call_expr (tree);
6295 extern tree build_trivial_dtor_call (tree);
6296 extern tree build_user_type_conversion (tree, tree, int,
6297 tsubst_flags_t);
6298 extern tree build_new_function_call (tree, vec<tree, va_gc> **,
6299 tsubst_flags_t);
6300 extern tree build_operator_new_call (tree, vec<tree, va_gc> **,
6301 tree *, tree *, tree, tree,
6302 tree *, tsubst_flags_t);
6303 extern tree build_new_method_call (tree, tree,
6304 vec<tree, va_gc> **, tree,
6305 int, tree *, tsubst_flags_t);
6306 extern tree build_special_member_call (tree, tree,
6307 vec<tree, va_gc> **,
6308 tree, int, tsubst_flags_t);
6309 extern tree build_new_op (const op_location_t &,
6310 enum tree_code,
6311 int, tree, tree, tree, tree *,
6312 tsubst_flags_t);
6313 extern tree build_op_call (tree, vec<tree, va_gc> **,
6314 tsubst_flags_t);
6315 extern bool aligned_allocation_fn_p (tree);
6316 extern tree destroying_delete_p (tree);
6317 extern bool usual_deallocation_fn_p (tree);
6318 extern tree build_op_delete_call (enum tree_code, tree, tree,
6319 bool, tree, tree,
6320 tsubst_flags_t);
6321 extern bool can_convert (tree, tree, tsubst_flags_t);
6322 extern bool can_convert_standard (tree, tree, tsubst_flags_t);
6323 extern bool can_convert_arg (tree, tree, tree, int,
6324 tsubst_flags_t);
6325 extern bool can_convert_arg_bad (tree, tree, tree, int,
6326 tsubst_flags_t);
6327 extern int conv_flags (int, int, tree, tree, int);
6328 extern struct conversion * good_conversion (tree, tree, tree, int, tsubst_flags_t);
6329 extern location_t get_fndecl_argument_location (tree, int);
6330 extern void complain_about_bad_argument (location_t arg_loc,
6331 tree from_type, tree to_type,
6332 tree fndecl, int parmnum);
6333 extern void maybe_inform_about_fndecl_for_bogus_argument_init (tree, int);
6334
6335
6336 /* A class for recording information about access failures (e.g. private
6337 fields), so that we can potentially supply a fix-it hint about
6338 an accessor (from a context in which the constness of the object
6339 is known). */
6340
6341 class access_failure_info
6342 {
6343 public:
access_failure_info()6344 access_failure_info () : m_was_inaccessible (false),
6345 m_basetype_path (NULL_TREE),
6346 m_decl (NULL_TREE), m_diag_decl (NULL_TREE) {}
6347
6348 void record_access_failure (tree basetype_path, tree decl, tree diag_decl);
6349
was_inaccessible_p()6350 bool was_inaccessible_p () const { return m_was_inaccessible; }
get_decl()6351 tree get_decl () const { return m_decl; }
get_diag_decl()6352 tree get_diag_decl () const { return m_diag_decl; }
6353 tree get_any_accessor (bool const_p) const;
6354 void maybe_suggest_accessor (bool const_p) const;
6355 static void add_fixit_hint (rich_location *richloc, tree accessor);
6356
6357 private:
6358 bool m_was_inaccessible;
6359 tree m_basetype_path;
6360 tree m_decl;
6361 tree m_diag_decl;
6362 };
6363
6364 extern void complain_about_access (tree, tree, bool);
6365 extern bool enforce_access (tree, tree, tree,
6366 tsubst_flags_t,
6367 access_failure_info *afi = NULL);
6368 extern void push_defarg_context (tree);
6369 extern void pop_defarg_context (void);
6370 extern tree convert_default_arg (tree, tree, tree, int,
6371 tsubst_flags_t);
6372 extern tree convert_arg_to_ellipsis (tree, tsubst_flags_t);
6373 extern tree build_x_va_arg (location_t, tree, tree);
6374 extern tree cxx_type_promotes_to (tree);
6375 extern tree type_passed_as (tree);
6376 extern tree convert_for_arg_passing (tree, tree, tsubst_flags_t);
6377 extern bool is_properly_derived_from (tree, tree);
6378 extern tree initialize_reference (tree, tree, int,
6379 tsubst_flags_t);
6380 extern tree extend_ref_init_temps (tree, tree,
6381 vec<tree, va_gc>**,
6382 tree * = NULL);
6383 extern tree make_temporary_var_for_ref_to_temp (tree, tree);
6384 extern bool type_has_extended_temps (tree);
6385 extern tree strip_top_quals (tree);
6386 extern bool reference_related_p (tree, tree);
6387 extern bool reference_compatible_p (tree, tree);
6388 extern int remaining_arguments (tree);
6389 extern tree perform_implicit_conversion (tree, tree, tsubst_flags_t);
6390 extern tree perform_implicit_conversion_flags (tree, tree, tsubst_flags_t, int);
6391 extern tree build_converted_constant_expr (tree, tree, tsubst_flags_t);
6392 extern tree build_converted_constant_bool_expr (tree, tsubst_flags_t);
6393 extern tree perform_direct_initialization_if_possible (tree, tree, bool,
6394 tsubst_flags_t);
6395 extern vec<tree,va_gc> *resolve_args (vec<tree,va_gc>*, tsubst_flags_t);
6396 extern tree in_charge_arg_for_name (tree);
6397 extern tree build_cxx_call (tree, int, tree *,
6398 tsubst_flags_t,
6399 tree = NULL_TREE);
6400 extern bool is_std_init_list (tree);
6401 extern bool is_list_ctor (tree);
6402 extern void validate_conversion_obstack (void);
6403 extern void mark_versions_used (tree);
6404 extern bool unsafe_return_slot_p (tree);
6405 extern bool cp_warn_deprecated_use (tree, tsubst_flags_t = tf_warning_or_error);
6406 extern void cp_warn_deprecated_use_scopes (tree);
6407 extern tree get_function_version_dispatcher (tree);
6408
6409 /* in class.c */
6410 extern tree build_vfield_ref (tree, tree);
6411 extern tree build_if_in_charge (tree true_stmt, tree false_stmt = void_node);
6412 extern tree build_base_path (enum tree_code, tree,
6413 tree, int, tsubst_flags_t);
6414 extern tree convert_to_base (tree, tree, bool, bool,
6415 tsubst_flags_t);
6416 extern tree convert_to_base_statically (tree, tree);
6417 extern tree build_vtbl_ref (tree, tree);
6418 extern tree build_vfn_ref (tree, tree);
6419 extern tree get_vtable_decl (tree, int);
6420 extern bool add_method (tree, tree, bool);
6421 extern tree declared_access (tree);
6422 extern tree currently_open_class (tree);
6423 extern tree currently_open_derived_class (tree);
6424 extern tree outermost_open_class (void);
6425 extern tree current_nonlambda_class_type (void);
6426 extern tree finish_struct (tree, tree);
6427 extern void finish_struct_1 (tree);
6428 extern int resolves_to_fixed_type_p (tree, int * = NULL);
6429 extern void init_class_processing (void);
6430 extern int is_empty_class (tree);
6431 extern bool is_really_empty_class (tree, bool);
6432 extern void pushclass (tree);
6433 extern void popclass (void);
6434 extern void push_nested_class (tree);
6435 extern void pop_nested_class (void);
6436 extern int current_lang_depth (void);
6437 extern void push_lang_context (tree);
6438 extern void pop_lang_context (void);
6439 extern tree instantiate_type (tree, tree, tsubst_flags_t);
6440 extern void build_self_reference (void);
6441 extern int same_signature_p (const_tree, const_tree);
6442 extern tree lookup_vfn_in_binfo (tree, tree);
6443 extern void maybe_add_class_template_decl_list (tree, tree, int);
6444 extern void unreverse_member_declarations (tree);
6445 extern void invalidate_class_lookup_cache (void);
6446 extern void maybe_note_name_used_in_class (tree, tree);
6447 extern void note_name_declared_in_class (tree, tree);
6448 extern tree get_vtbl_decl_for_binfo (tree);
6449 extern bool vptr_via_virtual_p (tree);
6450 extern void debug_class (tree);
6451 extern void debug_thunks (tree);
6452 extern void set_linkage_according_to_type (tree, tree);
6453 extern void determine_key_method (tree);
6454 extern void check_for_override (tree, tree);
6455 extern void push_class_stack (void);
6456 extern void pop_class_stack (void);
6457 extern bool default_ctor_p (const_tree);
6458 extern bool type_has_user_nondefault_constructor (tree);
6459 extern tree in_class_defaulted_default_constructor (tree);
6460 extern bool user_provided_p (tree);
6461 extern bool type_has_user_provided_constructor (tree);
6462 extern bool type_has_non_user_provided_default_constructor (tree);
6463 extern bool vbase_has_user_provided_move_assign (tree);
6464 extern tree default_init_uninitialized_part (tree);
6465 extern bool trivial_default_constructor_is_constexpr (tree);
6466 extern bool type_has_constexpr_default_constructor (tree);
6467 extern bool type_has_constexpr_destructor (tree);
6468 extern bool type_has_virtual_destructor (tree);
6469 extern bool classtype_has_move_assign_or_move_ctor_p (tree, bool user_declared);
6470 extern bool classtype_has_non_deleted_move_ctor (tree);
6471 extern bool classtype_has_non_deleted_copy_ctor (tree);
6472 extern tree classtype_has_depr_implicit_copy (tree);
6473 extern bool classtype_has_op (tree, tree_code);
6474 extern tree classtype_has_defaulted_op (tree, tree_code);
6475 extern bool type_build_ctor_call (tree);
6476 extern bool type_build_dtor_call (tree);
6477 extern void explain_non_literal_class (tree);
6478 extern void inherit_targ_abi_tags (tree);
6479 extern void defaulted_late_check (tree);
6480 extern bool defaultable_fn_check (tree);
6481 extern void check_abi_tags (tree);
6482 extern tree missing_abi_tags (tree);
6483 extern void fixup_type_variants (tree);
6484 extern void fixup_attribute_variants (tree);
6485 extern tree copy_fndecl_with_name (tree, tree);
6486 extern void clone_function_decl (tree, bool);
6487 extern void adjust_clone_args (tree);
6488 extern void deduce_noexcept_on_destructor (tree);
6489 extern bool uniquely_derived_from_p (tree, tree);
6490 extern bool publicly_uniquely_derived_p (tree, tree);
6491 extern tree common_enclosing_class (tree, tree);
6492
6493 /* in cvt.c */
6494 extern tree convert_to_reference (tree, tree, int, int, tree,
6495 tsubst_flags_t);
6496 extern tree convert_from_reference (tree);
6497 extern tree force_rvalue (tree, tsubst_flags_t);
6498 extern tree ocp_convert (tree, tree, int, int,
6499 tsubst_flags_t);
6500 extern tree cp_convert (tree, tree, tsubst_flags_t);
6501 extern tree cp_convert_and_check (tree, tree, tsubst_flags_t);
6502 extern tree cp_fold_convert (tree, tree);
6503 extern tree cp_get_callee (tree);
6504 extern tree cp_get_callee_fndecl (tree);
6505 extern tree cp_get_callee_fndecl_nofold (tree);
6506 extern tree cp_get_fndecl_from_callee (tree, bool fold = true);
6507 extern tree convert_to_void (tree, impl_conv_void,
6508 tsubst_flags_t);
6509 extern tree convert_force (tree, tree, int,
6510 tsubst_flags_t);
6511 extern tree build_expr_type_conversion (int, tree, bool);
6512 extern tree type_promotes_to (tree);
6513 extern bool can_convert_qual (tree, tree);
6514 extern tree perform_qualification_conversions (tree, tree);
6515 extern bool tx_safe_fn_type_p (tree);
6516 extern tree tx_unsafe_fn_variant (tree);
6517 extern bool fnptr_conv_p (tree, tree);
6518 extern tree strip_fnptr_conv (tree);
6519
6520 /* in name-lookup.c */
6521 extern void maybe_push_cleanup_level (tree);
6522 extern tree maybe_push_decl (tree);
6523 extern tree current_decl_namespace (void);
6524
6525 /* decl.c */
6526 extern tree poplevel (int, int, int);
6527 extern void cxx_init_decl_processing (void);
6528 enum cp_tree_node_structure_enum cp_tree_node_structure
6529 (union lang_tree_node *);
6530 extern void finish_scope (void);
6531 extern void push_switch (tree);
6532 extern void pop_switch (void);
6533 extern void note_break_stmt (void);
6534 extern bool note_iteration_stmt_body_start (void);
6535 extern void note_iteration_stmt_body_end (bool);
6536 extern void determine_local_discriminator (tree);
6537 extern int decls_match (tree, tree, bool = true);
6538 extern bool maybe_version_functions (tree, tree, bool);
6539 extern tree duplicate_decls (tree, tree, bool);
6540 extern tree declare_local_label (tree);
6541 extern tree define_label (location_t, tree);
6542 extern void check_goto (tree);
6543 extern bool check_omp_return (void);
6544 extern tree make_typename_type (tree, tree, enum tag_types, tsubst_flags_t);
6545 extern tree build_typename_type (tree, tree, tree, tag_types);
6546 extern tree make_unbound_class_template (tree, tree, tree, tsubst_flags_t);
6547 extern tree build_library_fn_ptr (const char *, tree, int);
6548 extern tree build_cp_library_fn_ptr (const char *, tree, int);
6549 extern tree push_library_fn (tree, tree, tree, int);
6550 extern tree push_void_library_fn (tree, tree, int);
6551 extern tree push_throw_library_fn (tree, tree);
6552 extern void warn_misplaced_attr_for_class_type (location_t location,
6553 tree class_type);
6554 extern tree check_tag_decl (cp_decl_specifier_seq *, bool);
6555 extern tree shadow_tag (cp_decl_specifier_seq *);
6556 extern tree groktypename (cp_decl_specifier_seq *, const cp_declarator *, bool);
6557 extern tree start_decl (const cp_declarator *, cp_decl_specifier_seq *, int, tree, tree, tree *);
6558 extern void start_decl_1 (tree, bool);
6559 extern bool check_array_initializer (tree, tree, tree);
6560 extern void omp_declare_variant_finalize (tree, tree);
6561 extern void cp_finish_decl (tree, tree, bool, tree, int);
6562 extern tree lookup_decomp_type (tree);
6563 extern void cp_maybe_mangle_decomp (tree, tree, unsigned int);
6564 extern void cp_finish_decomp (tree, tree, unsigned int);
6565 extern int cp_complete_array_type (tree *, tree, bool);
6566 extern int cp_complete_array_type_or_error (tree *, tree, bool, tsubst_flags_t);
6567 extern tree build_ptrmemfunc_type (tree);
6568 extern tree build_ptrmem_type (tree, tree);
6569 /* the grokdeclarator prototype is in decl.h */
6570 extern tree build_this_parm (tree, tree, cp_cv_quals);
6571 extern tree grokparms (tree, tree *);
6572 extern int copy_fn_p (const_tree);
6573 extern bool move_fn_p (const_tree);
6574 extern bool move_signature_fn_p (const_tree);
6575 extern tree get_scope_of_declarator (const cp_declarator *);
6576 extern void grok_special_member_properties (tree);
6577 extern bool grok_ctor_properties (const_tree, const_tree);
6578 extern bool grok_op_properties (tree, bool);
6579 extern tree xref_tag (enum tag_types, tree, tag_scope, bool);
6580 extern tree xref_tag_from_type (tree, tree, tag_scope);
6581 extern void xref_basetypes (tree, tree);
6582 extern tree start_enum (tree, tree, tree, tree, bool, bool *);
6583 extern void finish_enum_value_list (tree);
6584 extern void finish_enum (tree);
6585 extern void build_enumerator (tree, tree, tree, tree, location_t);
6586 extern tree lookup_enumerator (tree, tree);
6587 extern bool start_preparsed_function (tree, tree, int);
6588 extern bool start_function (cp_decl_specifier_seq *,
6589 const cp_declarator *, tree);
6590 extern tree begin_function_body (void);
6591 extern void finish_function_body (tree);
6592 extern tree outer_curly_brace_block (tree);
6593 extern tree finish_function (bool);
6594 extern tree grokmethod (cp_decl_specifier_seq *, const cp_declarator *, tree);
6595 extern void maybe_register_incomplete_var (tree);
6596 extern void maybe_commonize_var (tree);
6597 extern void complete_vars (tree);
6598 extern tree static_fn_type (tree);
6599 extern void revert_static_member_fn (tree);
6600 extern void fixup_anonymous_aggr (tree);
6601 extern tree compute_array_index_type (tree, tree, tsubst_flags_t);
6602 extern tree check_default_argument (tree, tree, tsubst_flags_t);
6603 extern int wrapup_namespace_globals ();
6604 extern tree create_implicit_typedef (tree, tree);
6605 extern int local_variable_p (const_tree);
6606 extern tree register_dtor_fn (tree);
6607 extern tmpl_spec_kind current_tmpl_spec_kind (int);
6608 extern tree cp_fname_init (const char *, tree *);
6609 extern tree cxx_builtin_function (tree decl);
6610 extern tree cxx_builtin_function_ext_scope (tree decl);
6611 extern tree cxx_simulate_builtin_function_decl (tree);
6612 extern tree check_elaborated_type_specifier (enum tag_types, tree, bool);
6613 extern void warn_extern_redeclared_static (tree, tree);
6614 extern tree cxx_comdat_group (tree);
6615 extern bool cp_missing_noreturn_ok_p (tree);
6616 extern bool is_direct_enum_init (tree, tree);
6617 extern void initialize_artificial_var (tree, vec<constructor_elt, va_gc> *);
6618 extern tree check_var_type (tree, tree, location_t);
6619 extern tree reshape_init (tree, tree, tsubst_flags_t);
6620 extern tree next_initializable_field (tree);
6621 extern tree fndecl_declared_return_type (tree);
6622 extern bool undeduced_auto_decl (tree);
6623 extern bool require_deduced_type (tree, tsubst_flags_t = tf_warning_or_error);
6624
6625 extern tree finish_case_label (location_t, tree, tree);
6626 extern tree cxx_maybe_build_cleanup (tree, tsubst_flags_t);
6627 extern bool check_array_designated_initializer (constructor_elt *,
6628 unsigned HOST_WIDE_INT);
6629 extern bool check_for_uninitialized_const_var (tree, bool, tsubst_flags_t);
6630 extern tree build_explicit_specifier (tree, tsubst_flags_t);
6631 extern void do_push_parm_decls (tree, tree, tree *);
6632
6633 /* in decl2.c */
6634 extern void record_mangling (tree, bool);
6635 extern void overwrite_mangling (tree, tree);
6636 extern void note_mangling_alias (tree, tree);
6637 extern void generate_mangling_aliases (void);
6638 extern tree build_memfn_type (tree, tree, cp_cv_quals, cp_ref_qualifier);
6639 extern tree build_pointer_ptrmemfn_type (tree);
6640 extern tree change_return_type (tree, tree);
6641 extern void maybe_retrofit_in_chrg (tree);
6642 extern void maybe_make_one_only (tree);
6643 extern bool vague_linkage_p (tree);
6644 extern void grokclassfn (tree, tree,
6645 enum overload_flags);
6646 extern tree grok_array_decl (location_t, tree, tree, bool);
6647 extern tree delete_sanity (location_t, tree, tree, bool,
6648 int, tsubst_flags_t);
6649 extern tree check_classfn (tree, tree, tree);
6650 extern void check_member_template (tree);
6651 extern tree grokfield (const cp_declarator *, cp_decl_specifier_seq *,
6652 tree, bool, tree, tree);
6653 extern tree grokbitfield (const cp_declarator *, cp_decl_specifier_seq *,
6654 tree, tree, tree);
6655 extern tree splice_template_attributes (tree *, tree);
6656 extern bool any_dependent_type_attributes_p (tree);
6657 extern tree cp_reconstruct_complex_type (tree, tree);
6658 extern bool attributes_naming_typedef_ok (tree);
6659 extern void cplus_decl_attributes (tree *, tree, int);
6660 extern void finish_anon_union (tree);
6661 extern void cxx_post_compilation_parsing_cleanups (void);
6662 extern tree coerce_new_type (tree, location_t);
6663 extern void coerce_delete_type (tree, location_t);
6664 extern void comdat_linkage (tree);
6665 extern void determine_visibility (tree);
6666 extern void constrain_class_visibility (tree);
6667 extern void reset_type_linkage (tree);
6668 extern void tentative_decl_linkage (tree);
6669 extern void import_export_decl (tree);
6670 extern tree build_cleanup (tree);
6671 extern tree build_offset_ref_call_from_tree (tree, vec<tree, va_gc> **,
6672 tsubst_flags_t);
6673 extern bool decl_defined_p (tree);
6674 extern bool decl_constant_var_p (tree);
6675 extern bool decl_maybe_constant_var_p (tree);
6676 extern void no_linkage_error (tree);
6677 extern void check_default_args (tree);
6678 extern bool mark_used (tree);
6679 extern bool mark_used (tree, tsubst_flags_t);
6680 extern void finish_static_data_member_decl (tree, tree, bool, tree, int);
6681 extern tree cp_build_parm_decl (tree, tree, tree);
6682 extern void copy_linkage (tree, tree);
6683 extern tree get_guard (tree);
6684 extern tree get_guard_cond (tree, bool);
6685 extern tree set_guard (tree);
6686 extern bool var_needs_tls_wrapper (tree);
6687 extern tree maybe_get_tls_wrapper_call (tree);
6688 extern void mark_needed (tree);
6689 extern bool decl_needed_p (tree);
6690 extern void note_vague_linkage_fn (tree);
6691 extern void note_variable_template_instantiation (tree);
6692 extern tree build_artificial_parm (tree, tree, tree);
6693 extern bool possibly_inlined_p (tree);
6694 extern int parm_index (tree);
6695 extern tree vtv_start_verification_constructor_init_function (void);
6696 extern tree vtv_finish_verification_constructor_init_function (tree);
6697 extern bool cp_omp_mappable_type (tree);
6698 extern bool cp_omp_emit_unmappable_type_notes (tree);
6699 extern void cp_check_const_attributes (tree);
6700
6701 /* in error.c */
6702 extern const char *type_as_string (tree, int);
6703 extern const char *type_as_string_translate (tree, int);
6704 extern const char *decl_as_string (tree, int);
6705 extern const char *decl_as_string_translate (tree, int);
6706 extern const char *decl_as_dwarf_string (tree, int);
6707 extern const char *expr_as_string (tree, int);
6708 extern const char *expr_to_string (tree);
6709 extern const char *lang_decl_name (tree, int, bool);
6710 extern const char *lang_decl_dwarf_name (tree, int, bool);
6711 extern const char *language_to_string (enum languages);
6712 extern const char *class_key_or_enum_as_string (tree);
6713 extern void maybe_warn_variadic_templates (void);
6714 extern void maybe_warn_cpp0x (cpp0x_warn_str str);
6715 extern bool pedwarn_cxx98 (location_t, int, const char *, ...) ATTRIBUTE_GCC_DIAG(3,4);
6716 extern location_t location_of (tree);
6717 extern void qualified_name_lookup_error (tree, tree, tree,
6718 location_t);
6719
6720 /* in except.c */
6721 extern void init_exception_processing (void);
6722 extern tree expand_start_catch_block (tree);
6723 extern void expand_end_catch_block (void);
6724 extern tree build_exc_ptr (void);
6725 extern tree build_throw (location_t, tree);
6726 extern int nothrow_libfn_p (const_tree);
6727 extern void check_handlers (tree);
6728 extern tree finish_noexcept_expr (tree, tsubst_flags_t);
6729 extern bool expr_noexcept_p (tree, tsubst_flags_t);
6730 extern void perform_deferred_noexcept_checks (void);
6731 extern bool nothrow_spec_p (const_tree);
6732 extern bool type_noexcept_p (const_tree);
6733 extern bool type_throw_all_p (const_tree);
6734 extern tree build_noexcept_spec (tree, tsubst_flags_t);
6735 extern void choose_personality_routine (enum languages);
6736 extern tree build_must_not_throw_expr (tree,tree);
6737 extern tree eh_type_info (tree);
6738 extern tree begin_eh_spec_block (void);
6739 extern void finish_eh_spec_block (tree, tree);
6740 extern tree build_eh_type_type (tree);
6741 extern tree cp_protect_cleanup_actions (void);
6742 extern void maybe_splice_retval_cleanup (tree);
6743 extern tree maybe_set_retval_sentinel (void);
6744
6745 extern tree template_parms_to_args (tree);
6746 extern tree template_parms_level_to_args (tree);
6747 extern tree generic_targs_for (tree);
6748
6749 /* in expr.c */
6750 extern tree cplus_expand_constant (tree);
6751 extern tree mark_use (tree expr, bool rvalue_p, bool read_p,
6752 location_t = UNKNOWN_LOCATION,
6753 bool reject_builtin = true);
6754 extern tree mark_rvalue_use (tree,
6755 location_t = UNKNOWN_LOCATION,
6756 bool reject_builtin = true);
6757 extern tree mark_lvalue_use (tree);
6758 extern tree mark_lvalue_use_nonread (tree);
6759 extern tree mark_type_use (tree);
6760 extern tree mark_discarded_use (tree);
6761 extern void mark_exp_read (tree);
6762
6763 /* friend.c */
6764 extern int is_friend (tree, tree);
6765 extern void make_friend_class (tree, tree, bool);
6766 extern void add_friend (tree, tree, bool);
6767 extern tree do_friend (tree, tree, tree, tree,
6768 enum overload_flags, bool);
6769
6770 extern void set_global_friend (tree);
6771 extern bool is_global_friend (tree);
6772
6773 /* in init.c */
6774 extern tree expand_member_init (tree);
6775 extern void emit_mem_initializers (tree);
6776 extern tree build_aggr_init (tree, tree, int,
6777 tsubst_flags_t);
6778 extern int is_class_type (tree, int);
6779 extern tree get_type_value (tree);
6780 extern tree build_zero_init (tree, tree, bool);
6781 extern tree build_value_init (tree, tsubst_flags_t);
6782 extern tree build_value_init_noctor (tree, tsubst_flags_t);
6783 extern tree get_nsdmi (tree, bool, tsubst_flags_t);
6784 extern tree build_offset_ref (tree, tree, bool,
6785 tsubst_flags_t);
6786 extern tree throw_bad_array_new_length (void);
6787 extern bool type_has_new_extended_alignment (tree);
6788 extern unsigned malloc_alignment (void);
6789 extern tree build_new_constexpr_heap_type (tree, tree, tree);
6790 extern tree build_new (location_t,
6791 vec<tree, va_gc> **, tree,
6792 tree, vec<tree, va_gc> **,
6793 int, tsubst_flags_t);
6794 extern tree get_temp_regvar (tree, tree);
6795 extern tree build_vec_init (tree, tree, tree, bool, int,
6796 tsubst_flags_t);
6797 extern tree build_delete (location_t, tree, tree,
6798 special_function_kind,
6799 int, int, tsubst_flags_t);
6800 extern void push_base_cleanups (void);
6801 extern tree build_vec_delete (location_t, tree, tree,
6802 special_function_kind, int,
6803 tsubst_flags_t);
6804 extern tree create_temporary_var (tree);
6805 extern void initialize_vtbl_ptrs (tree);
6806 extern tree scalar_constant_value (tree);
6807 extern tree decl_constant_value (tree, bool);
6808 extern tree decl_really_constant_value (tree, bool = true);
6809 extern int diagnose_uninitialized_cst_or_ref_member (tree, bool, bool);
6810 extern tree build_vtbl_address (tree);
6811 extern bool maybe_reject_flexarray_init (tree, tree);
6812
6813 /* in lex.c */
6814 extern void cxx_dup_lang_specific_decl (tree);
6815 extern void yyungetc (int, int);
6816
6817 extern tree unqualified_name_lookup_error (tree,
6818 location_t = UNKNOWN_LOCATION);
6819 extern tree unqualified_fn_lookup_error (cp_expr);
6820 extern tree make_conv_op_name (tree);
6821 extern tree build_lang_decl (enum tree_code, tree, tree);
6822 extern tree build_lang_decl_loc (location_t, enum tree_code, tree, tree);
6823 extern void retrofit_lang_decl (tree);
6824 extern void fit_decomposition_lang_decl (tree, tree);
6825 extern tree copy_decl (tree CXX_MEM_STAT_INFO);
6826 extern tree copy_type (tree CXX_MEM_STAT_INFO);
6827 extern tree cxx_make_type (enum tree_code CXX_MEM_STAT_INFO);
6828 extern tree make_class_type (enum tree_code CXX_MEM_STAT_INFO);
6829 extern const char *get_identifier_kind_name (tree);
6830 extern void set_identifier_kind (tree, cp_identifier_kind);
6831 extern bool cxx_init (void);
6832 extern void cxx_finish (void);
6833 extern bool in_main_input_context (void);
6834
6835 /* in method.c */
6836 extern void init_method (void);
6837 extern tree make_thunk (tree, bool, tree, tree);
6838 extern void finish_thunk (tree);
6839 extern void use_thunk (tree, bool);
6840 extern bool trivial_fn_p (tree);
6841 extern tree forward_parm (tree);
6842 extern bool is_trivially_xible (enum tree_code, tree, tree);
6843 extern bool is_xible (enum tree_code, tree, tree);
6844 extern tree get_defaulted_eh_spec (tree, tsubst_flags_t = tf_warning_or_error);
6845 extern void after_nsdmi_defaulted_late_checks (tree);
6846 extern bool maybe_explain_implicit_delete (tree);
6847 extern void explain_implicit_non_constexpr (tree);
6848 extern void deduce_inheriting_ctor (tree);
6849 extern bool decl_remember_implicit_trigger_p (tree);
6850 extern void synthesize_method (tree);
6851 extern tree lazily_declare_fn (special_function_kind,
6852 tree);
6853 extern tree skip_artificial_parms_for (const_tree, tree);
6854 extern int num_artificial_parms_for (const_tree);
6855 extern tree make_alias_for (tree, tree);
6856 extern tree get_copy_ctor (tree, tsubst_flags_t);
6857 extern tree get_copy_assign (tree);
6858 extern tree get_default_ctor (tree);
6859 extern tree get_dtor (tree, tsubst_flags_t);
6860 extern tree strip_inheriting_ctors (tree);
6861 extern tree inherited_ctor_binfo (tree);
6862 extern bool ctor_omit_inherited_parms (tree);
6863 extern tree locate_ctor (tree);
6864 extern tree implicitly_declare_fn (special_function_kind, tree,
6865 bool, tree, tree);
6866
6867 /* In optimize.c */
6868 extern bool maybe_clone_body (tree);
6869
6870 /* In parser.c */
6871 extern tree cp_convert_range_for (tree, tree, tree, tree, unsigned int, bool,
6872 unsigned short);
6873 extern void cp_convert_omp_range_for (tree &, vec<tree, va_gc> *, tree &,
6874 tree &, tree &, tree &, tree &, tree &);
6875 extern void cp_finish_omp_range_for (tree, tree);
6876 extern bool parsing_nsdmi (void);
6877 extern bool parsing_default_capturing_generic_lambda_in_template (void);
6878 extern void inject_this_parameter (tree, cp_cv_quals);
6879 extern location_t defparse_location (tree);
6880 extern void maybe_show_extern_c_location (void);
6881 extern bool literal_integer_zerop (const_tree);
6882
6883 /* in pt.c */
6884 extern void push_access_scope (tree);
6885 extern void pop_access_scope (tree);
6886 extern bool check_template_shadow (tree);
6887 extern bool check_auto_in_tmpl_args (tree, tree);
6888 extern tree get_innermost_template_args (tree, int);
6889 extern void maybe_begin_member_template_processing (tree);
6890 extern void maybe_end_member_template_processing (void);
6891 extern tree finish_member_template_decl (tree);
6892 extern void begin_template_parm_list (void);
6893 extern bool begin_specialization (void);
6894 extern void reset_specialization (void);
6895 extern void end_specialization (void);
6896 extern void begin_explicit_instantiation (void);
6897 extern void end_explicit_instantiation (void);
6898 extern void check_unqualified_spec_or_inst (tree, location_t);
6899 extern tree check_explicit_specialization (tree, tree, int, int,
6900 tree = NULL_TREE);
6901 extern int num_template_headers_for_class (tree);
6902 extern void check_template_variable (tree);
6903 extern tree make_auto (void);
6904 extern tree make_decltype_auto (void);
6905 extern tree make_constrained_auto (tree, tree);
6906 extern tree make_constrained_decltype_auto (tree, tree);
6907 extern tree make_template_placeholder (tree);
6908 extern bool template_placeholder_p (tree);
6909 extern bool ctad_template_p (tree);
6910 extern tree do_auto_deduction (tree, tree, tree,
6911 tsubst_flags_t
6912 = tf_warning_or_error,
6913 auto_deduction_context
6914 = adc_unspecified,
6915 tree = NULL_TREE,
6916 int = LOOKUP_NORMAL);
6917 extern tree type_uses_auto (tree);
6918 extern tree type_uses_auto_or_concept (tree);
6919 extern void append_type_to_template_for_access_check (tree, tree, tree,
6920 location_t);
6921 extern tree convert_generic_types_to_packs (tree, int, int);
6922 extern tree splice_late_return_type (tree, tree);
6923 extern bool is_auto (const_tree);
6924 extern tree process_template_parm (tree, location_t, tree,
6925 bool, bool);
6926 extern tree end_template_parm_list (tree);
6927 extern void end_template_parm_list (void);
6928 extern void end_template_decl (void);
6929 extern tree maybe_update_decl_type (tree, tree);
6930 extern bool check_default_tmpl_args (tree, tree, bool, bool, int);
6931 extern tree push_template_decl (tree);
6932 extern tree push_template_decl_real (tree, bool);
6933 extern tree add_inherited_template_parms (tree, tree);
6934 extern void template_parm_level_and_index (tree, int*, int*);
6935 extern bool redeclare_class_template (tree, tree, tree);
6936 extern tree lookup_template_class (tree, tree, tree, tree,
6937 int, tsubst_flags_t);
6938 extern tree lookup_template_function (tree, tree);
6939 extern tree lookup_template_variable (tree, tree);
6940 extern int uses_template_parms (tree);
6941 extern bool uses_template_parms_level (tree, int);
6942 extern bool in_template_function (void);
6943 extern bool need_generic_capture (void);
6944 extern tree instantiate_class_template (tree);
6945 extern tree instantiate_template (tree, tree, tsubst_flags_t);
6946 extern tree fn_type_unification (tree, tree, tree,
6947 const tree *, unsigned int,
6948 tree, unification_kind_t, int,
6949 struct conversion **,
6950 bool, bool);
6951 extern void mark_decl_instantiated (tree, int);
6952 extern int more_specialized_fn (tree, tree, int);
6953 extern void do_decl_instantiation (tree, tree);
6954 extern void do_type_instantiation (tree, tree, tsubst_flags_t);
6955 extern bool always_instantiate_p (tree);
6956 extern bool maybe_instantiate_noexcept (tree, tsubst_flags_t = tf_warning_or_error);
6957 extern tree instantiate_decl (tree, bool, bool);
6958 extern int comp_template_parms (const_tree, const_tree);
6959 extern bool template_heads_equivalent_p (const_tree, const_tree);
6960 extern bool builtin_pack_fn_p (tree);
6961 extern tree uses_parameter_packs (tree);
6962 extern bool template_parameter_pack_p (const_tree);
6963 extern bool function_parameter_pack_p (const_tree);
6964 extern bool function_parameter_expanded_from_pack_p (tree, tree);
6965 extern tree make_pack_expansion (tree, tsubst_flags_t = tf_warning_or_error);
6966 extern bool check_for_bare_parameter_packs (tree, location_t = UNKNOWN_LOCATION);
6967 extern tree build_template_info (tree, tree);
6968 extern tree get_template_info (const_tree);
6969 extern vec<qualified_typedef_usage_t, va_gc> *get_types_needing_access_check (tree);
6970 extern int template_class_depth (tree);
6971 extern int is_specialization_of (tree, tree);
6972 extern bool is_specialization_of_friend (tree, tree);
6973 extern tree get_pattern_parm (tree, tree);
6974 extern int comp_template_args (tree, tree, tree * = NULL,
6975 tree * = NULL, bool = false);
6976 extern int template_args_equal (tree, tree, bool = false);
6977 extern tree maybe_process_partial_specialization (tree);
6978 extern tree most_specialized_instantiation (tree);
6979 extern tree most_specialized_partial_spec (tree, tsubst_flags_t);
6980 extern void print_candidates (tree);
6981 extern void instantiate_pending_templates (int);
6982 extern tree tsubst_default_argument (tree, int, tree, tree,
6983 tsubst_flags_t);
6984 extern tree tsubst (tree, tree, tsubst_flags_t, tree);
6985 extern tree tsubst_copy_and_build (tree, tree, tsubst_flags_t,
6986 tree, bool, bool);
6987 extern tree tsubst_expr (tree, tree, tsubst_flags_t,
6988 tree, bool);
6989 extern tree tsubst_pack_expansion (tree, tree, tsubst_flags_t, tree);
6990 extern tree tsubst_argument_pack (tree, tree, tsubst_flags_t, tree);
6991 extern tree tsubst_template_args (tree, tree, tsubst_flags_t, tree);
6992 extern tree tsubst_template_arg (tree, tree, tsubst_flags_t, tree);
6993 extern tree tsubst_function_parms (tree, tree, tsubst_flags_t, tree);
6994 extern tree most_general_template (tree);
6995 extern tree get_mostly_instantiated_function_type (tree);
6996 extern bool problematic_instantiation_changed (void);
6997 extern void record_last_problematic_instantiation (void);
6998 extern struct tinst_level *current_instantiation(void);
6999 extern bool instantiating_current_function_p (void);
7000 extern tree maybe_get_template_decl_from_type_decl (tree);
7001 extern int processing_template_parmlist;
7002 extern bool dependent_type_p (tree);
7003 extern bool dependent_scope_p (tree);
7004 extern bool any_dependent_template_arguments_p (const_tree);
7005 extern bool any_erroneous_template_args_p (const_tree);
7006 extern bool dependent_template_p (tree);
7007 extern bool dependent_template_id_p (tree, tree);
7008 extern bool type_dependent_expression_p (tree);
7009 extern bool type_dependent_object_expression_p (tree);
7010 extern bool any_type_dependent_arguments_p (const vec<tree, va_gc> *);
7011 extern bool any_type_dependent_elements_p (const_tree);
7012 extern bool type_dependent_expression_p_push (tree);
7013 extern bool value_dependent_expression_p (tree);
7014 extern bool instantiation_dependent_expression_p (tree);
7015 extern bool instantiation_dependent_uneval_expression_p (tree);
7016 extern bool any_value_dependent_elements_p (const_tree);
7017 extern bool dependent_omp_for_p (tree, tree, tree, tree);
7018 extern tree resolve_typename_type (tree, bool);
7019 extern tree template_for_substitution (tree);
7020 extern tree build_non_dependent_expr (tree);
7021 extern void make_args_non_dependent (vec<tree, va_gc> *);
7022 extern bool reregister_specialization (tree, tree, tree);
7023 extern tree instantiate_non_dependent_expr (tree);
7024 extern tree instantiate_non_dependent_expr_sfinae (tree, tsubst_flags_t);
7025 extern tree instantiate_non_dependent_expr_internal (tree, tsubst_flags_t);
7026 extern tree instantiate_non_dependent_or_null (tree);
7027 extern bool variable_template_specialization_p (tree);
7028 extern bool alias_type_or_template_p (tree);
7029 enum { nt_opaque = false, nt_transparent = true };
7030 extern tree alias_template_specialization_p (const_tree, bool);
7031 extern tree dependent_alias_template_spec_p (const_tree, bool);
7032 extern bool template_parm_object_p (const_tree);
7033 extern tree tparm_object_argument (tree);
7034 extern bool explicit_class_specialization_p (tree);
7035 extern bool push_tinst_level (tree);
7036 extern bool push_tinst_level_loc (tree, location_t);
7037 extern void pop_tinst_level (void);
7038 extern struct tinst_level *outermost_tinst_level(void);
7039 extern void init_template_processing (void);
7040 extern void print_template_statistics (void);
7041 bool template_template_parameter_p (const_tree);
7042 bool template_type_parameter_p (const_tree);
7043 extern bool primary_template_specialization_p (const_tree);
7044 extern tree get_primary_template_innermost_parameters (const_tree);
7045 extern tree get_template_parms_at_level (tree, int);
7046 extern tree get_template_innermost_arguments (const_tree);
7047 extern tree get_template_argument_pack_elems (const_tree);
7048 extern tree get_function_template_decl (const_tree);
7049 extern tree resolve_nondeduced_context (tree, tsubst_flags_t);
7050 extern tree resolve_nondeduced_context_or_error (tree, tsubst_flags_t);
7051 extern hashval_t iterative_hash_template_arg (tree arg, hashval_t val);
7052 extern tree coerce_template_parms (tree, tree, tree);
7053 extern tree coerce_template_parms (tree, tree, tree, tsubst_flags_t);
7054 extern tree canonicalize_type_argument (tree, tsubst_flags_t);
7055 extern void register_local_specialization (tree, tree);
7056 extern tree retrieve_local_specialization (tree);
7057 extern tree extract_fnparm_pack (tree, tree *);
7058 extern tree template_parm_to_arg (tree);
7059 extern tree dguide_name (tree);
7060 extern bool dguide_name_p (tree);
7061 extern bool deduction_guide_p (const_tree);
7062 extern bool copy_guide_p (const_tree);
7063 extern bool template_guide_p (const_tree);
7064 extern void store_explicit_specifier (tree, tree);
7065 extern tree add_outermost_template_args (tree, tree);
7066
7067 /* in rtti.c */
7068 /* A vector of all tinfo decls that haven't been emitted yet. */
7069 extern GTY(()) vec<tree, va_gc> *unemitted_tinfo_decls;
7070
7071 extern void init_rtti_processing (void);
7072 extern tree build_typeid (tree, tsubst_flags_t);
7073 extern tree get_tinfo_decl (tree);
7074 extern tree get_typeid (tree, tsubst_flags_t);
7075 extern tree build_headof (tree);
7076 extern tree build_dynamic_cast (location_t, tree, tree,
7077 tsubst_flags_t);
7078 extern void emit_support_tinfos (void);
7079 extern bool emit_tinfo_decl (tree);
7080
7081 /* in search.c */
7082 extern bool accessible_base_p (tree, tree, bool);
7083 extern tree lookup_base (tree, tree, base_access,
7084 base_kind *, tsubst_flags_t);
7085 extern tree dcast_base_hint (tree, tree);
7086 extern int accessible_p (tree, tree, bool);
7087 extern int accessible_in_template_p (tree, tree);
7088 extern tree lookup_field (tree, tree, int, bool);
7089 extern tree lookup_fnfields (tree, tree, int);
7090 extern tree lookup_member (tree, tree, int, bool,
7091 tsubst_flags_t,
7092 access_failure_info *afi = NULL);
7093 extern tree lookup_member_fuzzy (tree, tree, bool);
7094 extern tree locate_field_accessor (tree, tree, bool);
7095 extern int look_for_overrides (tree, tree);
7096 extern void get_pure_virtuals (tree);
7097 extern void maybe_suppress_debug_info (tree);
7098 extern void note_debug_info_needed (tree);
7099 extern tree current_scope (void);
7100 extern int at_function_scope_p (void);
7101 extern bool at_class_scope_p (void);
7102 extern bool at_namespace_scope_p (void);
7103 extern tree context_for_name_lookup (tree);
7104 extern tree lookup_conversions (tree);
7105 extern tree binfo_from_vbase (tree);
7106 extern tree binfo_for_vbase (tree, tree);
7107 extern tree look_for_overrides_here (tree, tree);
7108 #define dfs_skip_bases ((tree)1)
7109 extern tree dfs_walk_all (tree, tree (*) (tree, void *),
7110 tree (*) (tree, void *), void *);
7111 extern tree dfs_walk_once (tree, tree (*) (tree, void *),
7112 tree (*) (tree, void *), void *);
7113 extern tree binfo_via_virtual (tree, tree);
7114 extern bool binfo_direct_p (tree);
7115 extern tree build_baselink (tree, tree, tree, tree);
7116 extern tree adjust_result_of_qualified_name_lookup
7117 (tree, tree, tree);
7118 extern tree copied_binfo (tree, tree);
7119 extern tree original_binfo (tree, tree);
7120 extern int shared_member_p (tree);
7121 extern bool any_dependent_bases_p (tree = current_nonlambda_class_type ());
7122 extern bool maybe_check_overriding_exception_spec (tree, tree);
7123
7124 /* The representation of a deferred access check. */
7125
7126 struct GTY(()) deferred_access_check {
7127 /* The base class in which the declaration is referenced. */
7128 tree binfo;
7129 /* The declaration whose access must be checked. */
7130 tree decl;
7131 /* The declaration that should be used in the error message. */
7132 tree diag_decl;
7133 /* The location of this access. */
7134 location_t loc;
7135 };
7136
7137 /* in semantics.c */
7138 extern void push_deferring_access_checks (deferring_kind);
7139 extern void resume_deferring_access_checks (void);
7140 extern void stop_deferring_access_checks (void);
7141 extern void pop_deferring_access_checks (void);
7142 extern vec<deferred_access_check, va_gc> *get_deferred_access_checks (void);
7143 extern void reopen_deferring_access_checks (vec<deferred_access_check, va_gc> *);
7144 extern void pop_to_parent_deferring_access_checks (void);
7145 extern bool perform_access_checks (vec<deferred_access_check, va_gc> *,
7146 tsubst_flags_t);
7147 extern bool perform_deferred_access_checks (tsubst_flags_t);
7148 extern bool perform_or_defer_access_check (tree, tree, tree,
7149 tsubst_flags_t,
7150 access_failure_info *afi = NULL);
7151
7152 /* RAII sentinel to ensures that deferred access checks are popped before
7153 a function returns. */
7154
7155 class deferring_access_check_sentinel
7156 {
7157 public:
7158 deferring_access_check_sentinel (enum deferring_kind kind = dk_deferred)
7159 {
7160 push_deferring_access_checks (kind);
7161 }
~deferring_access_check_sentinel()7162 ~deferring_access_check_sentinel ()
7163 {
7164 pop_deferring_access_checks ();
7165 }
7166 };
7167
7168 extern int stmts_are_full_exprs_p (void);
7169 extern void init_cp_semantics (void);
7170 extern tree do_poplevel (tree);
7171 extern void break_maybe_infinite_loop (void);
7172 extern void add_decl_expr (tree);
7173 extern tree maybe_cleanup_point_expr_void (tree);
7174 extern tree finish_expr_stmt (tree);
7175 extern tree begin_if_stmt (void);
7176 extern tree finish_if_stmt_cond (tree, tree);
7177 extern tree finish_then_clause (tree);
7178 extern void begin_else_clause (tree);
7179 extern void finish_else_clause (tree);
7180 extern void finish_if_stmt (tree);
7181 extern tree begin_while_stmt (void);
7182 extern void finish_while_stmt_cond (tree, tree, bool, unsigned short);
7183 extern void finish_while_stmt (tree);
7184 extern tree begin_do_stmt (void);
7185 extern void finish_do_body (tree);
7186 extern void finish_do_stmt (tree, tree, bool, unsigned short);
7187 extern tree finish_return_stmt (tree);
7188 extern tree begin_for_scope (tree *);
7189 extern tree begin_for_stmt (tree, tree);
7190 extern void finish_init_stmt (tree);
7191 extern void finish_for_cond (tree, tree, bool, unsigned short);
7192 extern void finish_for_expr (tree, tree);
7193 extern void finish_for_stmt (tree);
7194 extern tree begin_range_for_stmt (tree, tree);
7195 extern void finish_range_for_decl (tree, tree, tree);
7196 extern void finish_range_for_stmt (tree);
7197 extern tree finish_break_stmt (void);
7198 extern tree finish_continue_stmt (void);
7199 extern tree begin_switch_stmt (void);
7200 extern void finish_switch_cond (tree, tree);
7201 extern void finish_switch_stmt (tree);
7202 extern tree finish_goto_stmt (tree);
7203 extern tree begin_try_block (void);
7204 extern void finish_try_block (tree);
7205 extern void finish_handler_sequence (tree);
7206 extern tree begin_function_try_block (tree *);
7207 extern void finish_function_try_block (tree);
7208 extern void finish_function_handler_sequence (tree, tree);
7209 extern void finish_cleanup_try_block (tree);
7210 extern tree begin_handler (void);
7211 extern void finish_handler_parms (tree, tree);
7212 extern void finish_handler (tree);
7213 extern void finish_cleanup (tree, tree);
7214 extern bool is_this_parameter (tree);
7215
7216 enum {
7217 BCS_NORMAL = 0,
7218 BCS_NO_SCOPE = 1,
7219 BCS_TRY_BLOCK = 2,
7220 BCS_FN_BODY = 4,
7221 BCS_TRANSACTION = 8
7222 };
7223 extern tree begin_compound_stmt (unsigned int);
7224
7225 extern void finish_compound_stmt (tree);
7226 extern tree finish_asm_stmt (location_t, int, tree, tree,
7227 tree, tree, tree, bool);
7228 extern tree finish_label_stmt (tree);
7229 extern void finish_label_decl (tree);
7230 extern cp_expr finish_parenthesized_expr (cp_expr);
7231 extern tree force_paren_expr (tree, bool = false);
force_paren_expr_uneval(tree t)7232 inline tree force_paren_expr_uneval (tree t)
7233 { return force_paren_expr (t, true); }
7234 extern tree maybe_undo_parenthesized_ref (tree);
7235 extern tree maybe_strip_ref_conversion (tree);
7236 extern tree finish_non_static_data_member (tree, tree, tree);
7237 extern tree begin_stmt_expr (void);
7238 extern tree finish_stmt_expr_expr (tree, tree);
7239 extern tree finish_stmt_expr (tree, bool);
7240 extern tree stmt_expr_value_expr (tree);
7241 bool empty_expr_stmt_p (tree);
7242 extern cp_expr perform_koenig_lookup (cp_expr, vec<tree, va_gc> *,
7243 tsubst_flags_t);
7244 extern tree finish_call_expr (tree, vec<tree, va_gc> **, bool,
7245 bool, tsubst_flags_t);
7246 extern tree lookup_and_finish_template_variable (tree, tree, tsubst_flags_t = tf_warning_or_error);
7247 extern tree finish_template_variable (tree, tsubst_flags_t = tf_warning_or_error);
7248 extern cp_expr finish_increment_expr (cp_expr, enum tree_code);
7249 extern tree finish_this_expr (void);
7250 extern tree finish_pseudo_destructor_expr (tree, tree, tree, location_t);
7251 extern cp_expr finish_unary_op_expr (location_t, enum tree_code, cp_expr,
7252 tsubst_flags_t);
7253 /* Whether this call to finish_compound_literal represents a C++11 functional
7254 cast or a C99 compound literal. */
7255 enum fcl_t { fcl_functional, fcl_c99 };
7256 extern tree finish_compound_literal (tree, tree, tsubst_flags_t, fcl_t = fcl_functional);
7257 extern tree finish_fname (tree);
7258 extern void finish_translation_unit (void);
7259 extern tree finish_template_type_parm (tree, tree);
7260 extern tree finish_template_template_parm (tree, tree);
7261 extern tree begin_class_definition (tree);
7262 extern void finish_template_decl (tree);
7263 extern tree finish_template_type (tree, tree, int);
7264 extern tree finish_base_specifier (tree, tree, bool);
7265 extern void finish_member_declaration (tree);
7266 extern bool outer_automatic_var_p (tree);
7267 extern tree process_outer_var_ref (tree, tsubst_flags_t, bool force_use = false);
7268 extern cp_expr finish_id_expression (tree, tree, tree,
7269 cp_id_kind *,
7270 bool, bool, bool *,
7271 bool, bool, bool, bool,
7272 const char **,
7273 location_t);
7274 extern tree finish_typeof (tree);
7275 extern tree finish_underlying_type (tree);
7276 extern tree calculate_bases (tree, tsubst_flags_t);
7277 extern tree finish_bases (tree, bool);
7278 extern tree calculate_direct_bases (tree, tsubst_flags_t);
7279 extern tree finish_offsetof (tree, tree, location_t);
7280 extern void finish_decl_cleanup (tree, tree);
7281 extern void finish_eh_cleanup (tree);
7282 extern void emit_associated_thunks (tree);
7283 extern void finish_mem_initializers (tree);
7284 extern tree check_template_template_default_arg (tree);
7285 extern bool expand_or_defer_fn_1 (tree);
7286 extern void expand_or_defer_fn (tree);
7287 extern void add_typedef_to_current_template_for_access_check (tree, tree,
7288 location_t);
7289 extern void check_accessibility_of_qualified_id (tree, tree, tree);
7290 extern tree finish_qualified_id_expr (tree, tree, bool, bool,
7291 bool, bool, tsubst_flags_t);
7292 extern void simplify_aggr_init_expr (tree *);
7293 extern void finalize_nrv (tree *, tree, tree);
7294 extern tree omp_reduction_id (enum tree_code, tree, tree);
7295 extern tree cp_remove_omp_priv_cleanup_stmt (tree *, int *, void *);
7296 extern void cp_check_omp_declare_reduction (tree);
7297 extern void finish_omp_declare_simd_methods (tree);
7298 extern tree finish_omp_clauses (tree, enum c_omp_region_type);
7299 extern tree push_omp_privatization_clauses (bool);
7300 extern void pop_omp_privatization_clauses (tree);
7301 extern void save_omp_privatization_clauses (vec<tree> &);
7302 extern void restore_omp_privatization_clauses (vec<tree> &);
7303 extern void finish_omp_threadprivate (tree);
7304 extern tree begin_omp_structured_block (void);
7305 extern tree finish_omp_structured_block (tree);
7306 extern tree finish_oacc_data (tree, tree);
7307 extern tree finish_oacc_host_data (tree, tree);
7308 extern tree finish_omp_construct (enum tree_code, tree, tree);
7309 extern tree begin_omp_parallel (void);
7310 extern tree finish_omp_parallel (tree, tree);
7311 extern tree begin_omp_task (void);
7312 extern tree finish_omp_task (tree, tree);
7313 extern tree finish_omp_for (location_t, enum tree_code,
7314 tree, tree, tree, tree, tree,
7315 tree, tree, vec<tree> *, tree);
7316 extern tree finish_omp_for_block (tree, tree);
7317 extern void finish_omp_atomic (location_t, enum tree_code,
7318 enum tree_code, tree, tree,
7319 tree, tree, tree, tree,
7320 enum omp_memory_order);
7321 extern void finish_omp_barrier (void);
7322 extern void finish_omp_depobj (location_t, tree,
7323 enum omp_clause_depend_kind,
7324 tree);
7325 extern void finish_omp_flush (int);
7326 extern void finish_omp_taskwait (void);
7327 extern void finish_omp_taskyield (void);
7328 extern void finish_omp_cancel (tree);
7329 extern void finish_omp_cancellation_point (tree);
7330 extern tree omp_privatize_field (tree, bool);
7331 extern tree begin_transaction_stmt (location_t, tree *, int);
7332 extern void finish_transaction_stmt (tree, tree, int, tree);
7333 extern tree build_transaction_expr (location_t, tree, int, tree);
7334 extern bool cxx_omp_create_clause_info (tree, tree, bool, bool,
7335 bool, bool);
7336 extern tree baselink_for_fns (tree);
7337 extern void finish_static_assert (tree, tree, location_t,
7338 bool);
7339 extern tree finish_decltype_type (tree, bool, tsubst_flags_t);
7340 extern tree finish_trait_expr (location_t, enum cp_trait_kind, tree, tree);
7341 extern tree build_lambda_expr (void);
7342 extern tree build_lambda_object (tree);
7343 extern tree begin_lambda_type (tree);
7344 extern tree lambda_capture_field_type (tree, bool, bool);
7345 extern tree lambda_return_type (tree);
7346 extern tree lambda_proxy_type (tree);
7347 extern tree lambda_function (tree);
7348 extern void apply_deduced_return_type (tree, tree);
7349 extern tree add_capture (tree, tree, tree, bool, bool);
7350 extern tree add_default_capture (tree, tree, tree);
7351 extern void insert_capture_proxy (tree);
7352 extern void insert_pending_capture_proxies (void);
7353 extern bool is_capture_proxy (tree);
7354 extern bool is_normal_capture_proxy (tree);
7355 extern bool is_constant_capture_proxy (tree);
7356 extern void register_capture_members (tree);
7357 extern tree lambda_expr_this_capture (tree, int);
7358 extern void maybe_generic_this_capture (tree, tree);
7359 extern tree maybe_resolve_dummy (tree, bool);
7360 extern tree current_nonlambda_function (void);
7361 extern tree nonlambda_method_basetype (void);
7362 extern tree current_nonlambda_scope (void);
7363 extern tree current_lambda_expr (void);
7364 extern bool generic_lambda_fn_p (tree);
7365 extern tree do_dependent_capture (tree, bool = false);
7366 extern bool lambda_fn_in_template_p (tree);
7367 extern void maybe_add_lambda_conv_op (tree);
7368 extern bool is_lambda_ignored_entity (tree);
7369 extern bool lambda_static_thunk_p (tree);
7370 extern tree finish_builtin_launder (location_t, tree,
7371 tsubst_flags_t);
7372 extern tree cp_build_vec_convert (tree, location_t, tree,
7373 tsubst_flags_t);
7374 extern void start_lambda_scope (tree);
7375 extern void record_lambda_scope (tree);
7376 extern void record_null_lambda_scope (tree);
7377 extern void finish_lambda_scope (void);
7378 extern tree start_lambda_function (tree fn, tree lambda_expr);
7379 extern void finish_lambda_function (tree body);
7380
7381 /* in tree.c */
7382 extern int cp_tree_operand_length (const_tree);
7383 extern int cp_tree_code_length (enum tree_code);
7384 extern void cp_free_lang_data (tree t);
7385 extern tree force_target_expr (tree, tree, tsubst_flags_t);
7386 extern tree build_target_expr_with_type (tree, tree, tsubst_flags_t);
7387 extern void lang_check_failed (const char *, int,
7388 const char *) ATTRIBUTE_NORETURN
7389 ATTRIBUTE_COLD;
7390 extern tree stabilize_expr (tree, tree *);
7391 extern void stabilize_call (tree, tree *);
7392 extern bool stabilize_init (tree, tree *);
7393 extern tree add_stmt_to_compound (tree, tree);
7394 extern void init_tree (void);
7395 extern bool pod_type_p (const_tree);
7396 extern bool layout_pod_type_p (const_tree);
7397 extern bool std_layout_type_p (const_tree);
7398 extern bool trivial_type_p (const_tree);
7399 extern bool trivially_copyable_p (const_tree);
7400 extern bool type_has_unique_obj_representations (const_tree);
7401 extern bool scalarish_type_p (const_tree);
7402 extern bool structural_type_p (tree, bool = false);
7403 extern bool type_has_nontrivial_default_init (const_tree);
7404 extern bool type_has_nontrivial_copy_init (const_tree);
7405 extern void maybe_warn_parm_abi (tree, location_t);
7406 extern bool class_tmpl_impl_spec_p (const_tree);
7407 extern int zero_init_p (const_tree);
7408 extern bool zero_init_expr_p (tree);
7409 extern bool check_abi_tag_redeclaration (const_tree, const_tree,
7410 const_tree);
7411 extern bool check_abi_tag_args (tree, tree);
7412 extern tree strip_typedefs (tree, bool * = NULL,
7413 unsigned int = 0);
7414 extern tree strip_typedefs_expr (tree, bool * = NULL,
7415 unsigned int = 0);
7416 extern tree copy_binfo (tree, tree, tree,
7417 tree *, int);
7418 extern int member_p (const_tree);
7419 extern cp_lvalue_kind real_lvalue_p (const_tree);
7420 extern cp_lvalue_kind lvalue_kind (const_tree);
7421 extern bool glvalue_p (const_tree);
7422 extern bool obvalue_p (const_tree);
7423 extern bool xvalue_p (const_tree);
7424 extern bool bitfield_p (const_tree);
7425 extern tree cp_stabilize_reference (tree);
7426 extern bool builtin_valid_in_constant_expr_p (const_tree);
7427 extern tree build_min (enum tree_code, tree, ...);
7428 extern tree build_min_nt_loc (location_t, enum tree_code,
7429 ...);
7430 extern tree build_min_non_dep (enum tree_code, tree, ...);
7431 extern tree build_min_non_dep_op_overload (enum tree_code, tree, tree, ...);
7432 extern tree build_min_nt_call_vec (tree, vec<tree, va_gc> *);
7433 extern tree build_min_non_dep_call_vec (tree, tree, vec<tree, va_gc> *);
7434 extern vec<tree, va_gc>* vec_copy_and_insert (vec<tree, va_gc>*, tree, unsigned);
7435 extern tree build_cplus_new (tree, tree, tsubst_flags_t);
7436 extern tree build_local_temp (tree);
7437 extern bool is_local_temp (tree);
7438 extern tree build_aggr_init_expr (tree, tree);
7439 extern tree get_target_expr (tree);
7440 extern tree get_target_expr_sfinae (tree, tsubst_flags_t);
7441 extern tree build_cplus_array_type (tree, tree);
7442 extern tree build_array_of_n_type (tree, int);
7443 extern bool array_of_runtime_bound_p (tree);
7444 extern bool vla_type_p (tree);
7445 extern tree build_array_copy (tree);
7446 extern tree build_vec_init_expr (tree, tree, tsubst_flags_t);
7447 extern void diagnose_non_constexpr_vec_init (tree);
7448 extern tree hash_tree_cons (tree, tree, tree);
7449 extern tree hash_tree_chain (tree, tree);
7450 extern tree build_qualified_name (tree, tree, tree, bool);
7451 extern tree build_ref_qualified_type (tree, cp_ref_qualifier);
7452 inline tree ovl_first (tree) ATTRIBUTE_PURE;
7453 extern tree ovl_make (tree fn,
7454 tree next = NULL_TREE);
7455 extern tree ovl_insert (tree fn, tree maybe_ovl,
7456 bool using_p = false);
7457 extern tree ovl_skip_hidden (tree) ATTRIBUTE_PURE;
7458 extern void lookup_mark (tree lookup, bool val);
7459 extern tree lookup_add (tree fns, tree lookup);
7460 extern tree lookup_maybe_add (tree fns, tree lookup,
7461 bool deduping);
7462 extern int is_overloaded_fn (tree) ATTRIBUTE_PURE;
7463 extern bool really_overloaded_fn (tree) ATTRIBUTE_PURE;
7464 extern tree dependent_name (tree);
7465 extern tree maybe_get_fns (tree) ATTRIBUTE_PURE;
7466 extern tree get_fns (tree) ATTRIBUTE_PURE;
7467 extern tree get_first_fn (tree) ATTRIBUTE_PURE;
7468 extern tree ovl_scope (tree);
7469 extern const char *cxx_printable_name (tree, int);
7470 extern const char *cxx_printable_name_translate (tree, int);
7471 extern tree canonical_eh_spec (tree);
7472 extern tree build_cp_fntype_variant (tree, cp_ref_qualifier, tree, bool);
7473 extern tree build_exception_variant (tree, tree);
7474 extern tree bind_template_template_parm (tree, tree);
7475 extern tree array_type_nelts_total (tree);
7476 extern tree array_type_nelts_top (tree);
7477 extern bool array_of_unknown_bound_p (const_tree);
7478 extern tree break_out_target_exprs (tree, bool = false);
7479 extern tree build_ctor_subob_ref (tree, tree, tree);
7480 extern tree replace_placeholders (tree, tree, bool * = NULL);
7481 extern bool find_placeholders (tree);
7482 extern tree get_type_decl (tree);
7483 extern tree decl_namespace_context (tree);
7484 extern bool decl_anon_ns_mem_p (const_tree);
7485 extern tree lvalue_type (tree);
7486 extern tree error_type (tree);
7487 extern int varargs_function_p (const_tree);
7488 extern bool cp_tree_equal (tree, tree);
7489 extern tree no_linkage_check (tree, bool);
7490 extern void debug_binfo (tree);
7491 extern tree build_dummy_object (tree);
7492 extern tree maybe_dummy_object (tree, tree *);
7493 extern int is_dummy_object (const_tree);
7494 extern const struct attribute_spec cxx_attribute_table[];
7495 extern tree make_ptrmem_cst (tree, tree);
7496 extern tree cp_build_type_attribute_variant (tree, tree);
7497 extern tree cp_build_reference_type (tree, bool);
7498 extern tree move (tree);
7499 extern tree cp_build_qualified_type_real (tree, int, tsubst_flags_t);
7500 #define cp_build_qualified_type(TYPE, QUALS) \
7501 cp_build_qualified_type_real ((TYPE), (QUALS), tf_warning_or_error)
7502 extern bool cv_qualified_p (const_tree);
7503 extern tree cv_unqualified (tree);
7504 extern special_function_kind special_function_p (const_tree);
7505 extern special_function_kind special_memfn_p (const_tree);
7506 extern int count_trees (tree);
7507 extern int char_type_p (tree);
7508 extern void verify_stmt_tree (tree);
7509 extern linkage_kind decl_linkage (tree);
7510 extern duration_kind decl_storage_duration (tree);
7511 extern tree cp_walk_subtrees (tree*, int*, walk_tree_fn,
7512 void*, hash_set<tree> *);
7513 #define cp_walk_tree(tp,func,data,pset) \
7514 walk_tree_1 (tp, func, data, pset, cp_walk_subtrees)
7515 #define cp_walk_tree_without_duplicates(tp,func,data) \
7516 walk_tree_without_duplicates_1 (tp, func, data, cp_walk_subtrees)
7517 extern tree rvalue (tree);
7518 extern tree convert_bitfield_to_declared_type (tree);
7519 extern tree cp_save_expr (tree);
7520 extern bool cast_valid_in_integral_constant_expression_p (tree);
7521 extern bool cxx_type_hash_eq (const_tree, const_tree);
7522 extern tree cxx_copy_lang_qualifiers (const_tree, const_tree);
7523
7524 extern void cxx_print_statistics (void);
7525 extern bool maybe_warn_zero_as_null_pointer_constant (tree, location_t);
7526
7527 /* in ptree.c */
7528 extern void cxx_print_xnode (FILE *, tree, int);
7529 extern void cxx_print_decl (FILE *, tree, int);
7530 extern void cxx_print_type (FILE *, tree, int);
7531 extern void cxx_print_identifier (FILE *, tree, int);
7532 extern void cxx_print_error_function (diagnostic_context *,
7533 const char *,
7534 struct diagnostic_info *);
7535
7536 /* in typeck.c */
7537 /* Says how we should behave when comparing two arrays one of which
7538 has unknown bounds. */
7539 enum compare_bounds_t { bounds_none, bounds_either, bounds_first };
7540
7541 extern bool cxx_mark_addressable (tree, bool = false);
7542 extern int string_conv_p (const_tree, const_tree, int);
7543 extern tree cp_truthvalue_conversion (tree, tsubst_flags_t);
7544 extern tree contextual_conv_bool (tree, tsubst_flags_t);
7545 extern tree condition_conversion (tree);
7546 extern tree require_complete_type (tree);
7547 extern tree require_complete_type_sfinae (tree, tsubst_flags_t);
7548 extern tree complete_type (tree);
7549 extern tree complete_type_or_else (tree, tree);
7550 extern tree complete_type_or_maybe_complain (tree, tree, tsubst_flags_t);
7551 inline bool type_unknown_p (const_tree);
7552 enum { ce_derived, ce_type, ce_normal, ce_exact };
7553 extern bool comp_except_specs (const_tree, const_tree, int);
7554 extern bool comptypes (tree, tree, int);
7555 extern bool same_type_ignoring_top_level_qualifiers_p (tree, tree);
7556 extern bool similar_type_p (tree, tree);
7557 extern bool compparms (const_tree, const_tree);
7558 extern int comp_cv_qualification (const_tree, const_tree);
7559 extern int comp_cv_qualification (int, int);
7560 extern int comp_cv_qual_signature (tree, tree);
7561 extern tree cxx_sizeof_or_alignof_expr (location_t, tree,
7562 enum tree_code, bool);
7563 extern tree cxx_sizeof_or_alignof_type (location_t, tree,
7564 enum tree_code, bool, bool);
7565 extern tree cxx_alignas_expr (tree);
7566 extern tree cxx_sizeof_nowarn (tree);
7567 extern tree is_bitfield_expr_with_lowered_type (const_tree);
7568 extern tree unlowered_expr_type (const_tree);
7569 extern tree decay_conversion (tree,
7570 tsubst_flags_t,
7571 bool = true);
7572 extern tree build_class_member_access_expr (cp_expr, tree, tree, bool,
7573 tsubst_flags_t);
7574 extern tree finish_class_member_access_expr (cp_expr, tree, bool,
7575 tsubst_flags_t);
7576 extern tree lookup_destructor (tree, tree, tree, tsubst_flags_t);
7577 extern tree build_x_indirect_ref (location_t, tree,
7578 ref_operator,
7579 tsubst_flags_t);
7580 extern tree cp_build_indirect_ref (location_t, tree,
7581 ref_operator,
7582 tsubst_flags_t);
7583 extern tree cp_build_fold_indirect_ref (tree);
7584 extern tree build_array_ref (location_t, tree, tree);
7585 extern tree cp_build_array_ref (location_t, tree, tree,
7586 tsubst_flags_t);
7587 extern tree get_member_function_from_ptrfunc (tree *, tree, tsubst_flags_t);
7588 extern tree cp_build_function_call_nary (tree, tsubst_flags_t, ...)
7589 ATTRIBUTE_SENTINEL;
7590 extern tree cp_build_function_call_vec (tree, vec<tree, va_gc> **,
7591 tsubst_flags_t,
7592 tree = NULL_TREE);
7593 extern tree build_x_binary_op (const op_location_t &,
7594 enum tree_code, tree,
7595 enum tree_code, tree,
7596 enum tree_code, tree *,
7597 tsubst_flags_t);
build_x_binary_op(const op_location_t & loc,enum tree_code code,tree arg1,tree arg2,tsubst_flags_t complain)7598 inline tree build_x_binary_op (const op_location_t &loc,
7599 enum tree_code code, tree arg1, tree arg2,
7600 tsubst_flags_t complain)
7601 {
7602 return build_x_binary_op (loc, code, arg1, TREE_CODE (arg1), arg2,
7603 TREE_CODE (arg2), NULL, complain);
7604 }
7605 extern tree build_x_array_ref (location_t, tree, tree,
7606 tsubst_flags_t);
7607 extern tree build_x_unary_op (location_t,
7608 enum tree_code, cp_expr,
7609 tsubst_flags_t);
7610 extern tree cp_build_addressof (location_t, tree,
7611 tsubst_flags_t);
7612 extern tree cp_build_addr_expr (tree, tsubst_flags_t);
7613 extern tree cp_build_unary_op (enum tree_code, tree, bool,
7614 tsubst_flags_t);
7615 extern tree genericize_compound_lvalue (tree);
7616 extern tree unary_complex_lvalue (enum tree_code, tree);
7617 extern tree build_x_conditional_expr (location_t, tree, tree, tree,
7618 tsubst_flags_t);
7619 extern tree build_x_compound_expr_from_list (tree, expr_list_kind,
7620 tsubst_flags_t);
7621 extern tree build_x_compound_expr_from_vec (vec<tree, va_gc> *,
7622 const char *, tsubst_flags_t);
7623 extern tree build_x_compound_expr (location_t, tree, tree,
7624 tsubst_flags_t);
7625 extern tree build_compound_expr (location_t, tree, tree);
7626 extern tree cp_build_compound_expr (tree, tree, tsubst_flags_t);
7627 extern tree build_static_cast (location_t, tree, tree,
7628 tsubst_flags_t);
7629 extern tree build_reinterpret_cast (location_t, tree, tree,
7630 tsubst_flags_t);
7631 extern tree build_const_cast (location_t, tree, tree,
7632 tsubst_flags_t);
7633 extern tree build_c_cast (location_t, tree, tree);
7634 extern cp_expr build_c_cast (location_t loc, tree type,
7635 cp_expr expr);
7636 extern tree cp_build_c_cast (location_t, tree, tree,
7637 tsubst_flags_t);
7638 extern cp_expr build_x_modify_expr (location_t, tree,
7639 enum tree_code, tree,
7640 tsubst_flags_t);
7641 extern tree cp_build_modify_expr (location_t, tree,
7642 enum tree_code, tree,
7643 tsubst_flags_t);
7644 extern tree convert_for_initialization (tree, tree, tree, int,
7645 impl_conv_rhs, tree, int,
7646 tsubst_flags_t);
7647 extern int comp_ptr_ttypes (tree, tree);
7648 extern bool comp_ptr_ttypes_const (tree, tree, compare_bounds_t);
7649 extern bool error_type_p (const_tree);
7650 extern bool ptr_reasonably_similar (const_tree, const_tree);
7651 extern tree build_ptrmemfunc (tree, tree, int, bool,
7652 tsubst_flags_t);
7653 extern int cp_type_quals (const_tree);
7654 extern int type_memfn_quals (const_tree);
7655 extern cp_ref_qualifier type_memfn_rqual (const_tree);
7656 extern tree apply_memfn_quals (tree, cp_cv_quals,
7657 cp_ref_qualifier = REF_QUAL_NONE);
7658 extern bool cp_has_mutable_p (const_tree);
7659 extern bool at_least_as_qualified_p (const_tree, const_tree);
7660 extern void cp_apply_type_quals_to_decl (int, tree);
7661 extern tree build_ptrmemfunc1 (tree, tree, tree);
7662 extern void expand_ptrmemfunc_cst (tree, tree *, tree *);
7663 extern tree type_after_usual_arithmetic_conversions (tree, tree);
7664 extern tree common_pointer_type (tree, tree);
7665 extern tree composite_pointer_type (const op_location_t &,
7666 tree, tree, tree, tree,
7667 composite_pointer_operation,
7668 tsubst_flags_t);
7669 extern tree merge_types (tree, tree);
7670 extern tree strip_array_domain (tree);
7671 extern tree check_return_expr (tree, bool *);
7672 extern tree spaceship_type (tree, tsubst_flags_t = tf_warning_or_error);
7673 extern tree genericize_spaceship (tree, tree, tree);
7674 extern tree cp_build_binary_op (const op_location_t &,
7675 enum tree_code, tree, tree,
7676 tsubst_flags_t);
7677 extern tree build_x_vec_perm_expr (location_t,
7678 tree, tree, tree,
7679 tsubst_flags_t);
7680 #define cxx_sizeof(T) cxx_sizeof_or_alignof_type (input_location, T, SIZEOF_EXPR, false, true)
7681 extern tree build_simple_component_ref (tree, tree);
7682 extern tree build_ptrmemfunc_access_expr (tree, tree);
7683 extern tree build_address (tree);
7684 extern tree build_nop (tree, tree);
7685 extern tree non_reference (tree);
7686 extern tree lookup_anon_field (tree, tree);
7687 extern bool invalid_nonstatic_memfn_p (location_t, tree,
7688 tsubst_flags_t);
7689 extern tree convert_member_func_to_ptr (tree, tree, tsubst_flags_t);
7690 extern tree convert_ptrmem (tree, tree, bool, bool,
7691 tsubst_flags_t);
7692 extern int lvalue_or_else (tree, enum lvalue_use,
7693 tsubst_flags_t);
7694 extern void check_template_keyword (tree);
7695 extern bool check_raw_literal_operator (const_tree decl);
7696 extern bool check_literal_operator_args (const_tree, bool *, bool *);
7697 extern void maybe_warn_about_useless_cast (location_t, tree, tree,
7698 tsubst_flags_t);
7699 extern tree cp_perform_integral_promotions (tree, tsubst_flags_t);
7700
7701 extern tree finish_left_unary_fold_expr (tree, int);
7702 extern tree finish_right_unary_fold_expr (tree, int);
7703 extern tree finish_binary_fold_expr (tree, tree, int);
7704 extern bool treat_lvalue_as_rvalue_p (tree, bool);
7705 extern bool decl_in_std_namespace_p (tree);
7706
7707 /* in typeck2.c */
7708 extern void require_complete_eh_spec_types (tree, tree);
7709 extern void cxx_incomplete_type_diagnostic (location_t, const_tree,
7710 const_tree, diagnostic_t);
7711
7712 inline location_t
cp_expr_loc_or_loc(const_tree t,location_t or_loc)7713 cp_expr_loc_or_loc (const_tree t, location_t or_loc)
7714 {
7715 location_t loc = cp_expr_location (t);
7716 if (loc == UNKNOWN_LOCATION)
7717 loc = or_loc;
7718 return loc;
7719 }
7720
7721 inline location_t
cp_expr_loc_or_input_loc(const_tree t)7722 cp_expr_loc_or_input_loc (const_tree t)
7723 {
7724 return cp_expr_loc_or_loc (t, input_location);
7725 }
7726
7727 inline void
cxx_incomplete_type_diagnostic(const_tree value,const_tree type,diagnostic_t diag_kind)7728 cxx_incomplete_type_diagnostic (const_tree value, const_tree type,
7729 diagnostic_t diag_kind)
7730 {
7731 cxx_incomplete_type_diagnostic (cp_expr_loc_or_input_loc (value),
7732 value, type, diag_kind);
7733 }
7734
7735 extern void cxx_incomplete_type_error (location_t, const_tree,
7736 const_tree);
7737 inline void
cxx_incomplete_type_error(const_tree value,const_tree type)7738 cxx_incomplete_type_error (const_tree value, const_tree type)
7739 {
7740 cxx_incomplete_type_diagnostic (value, type, DK_ERROR);
7741 }
7742
7743 extern void cxx_incomplete_type_inform (const_tree);
7744 extern tree error_not_base_type (tree, tree);
7745 extern tree binfo_or_else (tree, tree);
7746 extern void cxx_readonly_error (location_t, tree,
7747 enum lvalue_use);
7748 extern void complete_type_check_abstract (tree);
7749 extern int abstract_virtuals_error (tree, tree);
7750 extern int abstract_virtuals_error (abstract_class_use, tree);
7751 extern int abstract_virtuals_error_sfinae (tree, tree, tsubst_flags_t);
7752 extern int abstract_virtuals_error_sfinae (abstract_class_use, tree, tsubst_flags_t);
7753
7754 extern tree store_init_value (tree, tree, vec<tree, va_gc>**, int);
7755 extern tree split_nonconstant_init (tree, tree);
7756 extern bool check_narrowing (tree, tree, tsubst_flags_t,
7757 bool = false);
7758 extern bool ordinary_char_type_p (tree);
7759 extern tree digest_init (tree, tree, tsubst_flags_t);
7760 extern tree digest_init_flags (tree, tree, int, tsubst_flags_t);
7761 extern tree digest_nsdmi_init (tree, tree, tsubst_flags_t);
7762 extern tree build_scoped_ref (tree, tree, tree *);
7763 extern tree build_x_arrow (location_t, tree,
7764 tsubst_flags_t);
7765 extern tree build_m_component_ref (tree, tree, tsubst_flags_t);
7766 extern tree build_functional_cast (location_t, tree, tree,
7767 tsubst_flags_t);
7768 extern tree add_exception_specifier (tree, tree, tsubst_flags_t);
7769 extern tree merge_exception_specifiers (tree, tree);
7770
7771 /* in mangle.c */
7772 extern void init_mangle (void);
7773 extern void mangle_decl (tree);
7774 extern const char *mangle_type_string (tree);
7775 extern tree mangle_typeinfo_for_type (tree);
7776 extern tree mangle_typeinfo_string_for_type (tree);
7777 extern tree mangle_vtbl_for_type (tree);
7778 extern tree mangle_vtt_for_type (tree);
7779 extern tree mangle_ctor_vtbl_for_type (tree, tree);
7780 extern tree mangle_thunk (tree, int, tree, tree, tree);
7781 extern tree mangle_guard_variable (tree);
7782 extern tree mangle_tls_init_fn (tree);
7783 extern tree mangle_tls_wrapper_fn (tree);
7784 extern bool decl_tls_wrapper_p (tree);
7785 extern tree mangle_ref_init_variable (tree);
7786 extern tree mangle_template_parm_object (tree);
7787 extern char * get_mangled_vtable_map_var_name (tree);
7788 extern bool mangle_return_type_p (tree);
7789 extern tree mangle_decomp (tree, vec<tree> &);
7790
7791 /* in dump.c */
7792 extern bool cp_dump_tree (void *, tree);
7793
7794 /* In cp/cp-objcp-common.c. */
7795
7796 extern alias_set_type cxx_get_alias_set (tree);
7797 extern bool cxx_warn_unused_global_decl (const_tree);
7798 extern size_t cp_tree_size (enum tree_code);
7799 extern bool cp_var_mod_type_p (tree, tree);
7800 extern void cxx_initialize_diagnostics (diagnostic_context *);
7801 extern int cxx_types_compatible_p (tree, tree);
7802 extern bool cxx_block_may_fallthru (const_tree);
7803
7804 /* in cp-gimplify.c */
7805 extern int cp_gimplify_expr (tree *, gimple_seq *,
7806 gimple_seq *);
7807 extern void cp_genericize (tree);
7808 extern bool cxx_omp_const_qual_no_mutable (tree);
7809 extern enum omp_clause_default_kind cxx_omp_predetermined_sharing_1 (tree);
7810 extern enum omp_clause_default_kind cxx_omp_predetermined_sharing (tree);
7811 extern tree cxx_omp_clause_default_ctor (tree, tree, tree);
7812 extern tree cxx_omp_clause_copy_ctor (tree, tree, tree);
7813 extern tree cxx_omp_clause_assign_op (tree, tree, tree);
7814 extern tree cxx_omp_clause_dtor (tree, tree);
7815 extern void cxx_omp_finish_clause (tree, gimple_seq *);
7816 extern bool cxx_omp_privatize_by_reference (const_tree);
7817 extern bool cxx_omp_disregard_value_expr (tree, bool);
7818 extern void cp_fold_function (tree);
7819 extern tree cp_fold_maybe_rvalue (tree, bool);
7820 extern tree cp_fold_rvalue (tree);
7821 extern tree cp_fully_fold (tree);
7822 extern tree cp_fully_fold_init (tree);
7823 extern void clear_fold_cache (void);
7824 extern tree lookup_hotness_attribute (tree);
7825 extern tree process_stmt_hotness_attribute (tree, location_t);
7826 extern bool simple_empty_class_p (tree, tree, tree_code);
7827 extern tree fold_builtin_source_location (location_t);
7828
7829 /* in name-lookup.c */
7830 extern tree strip_using_decl (tree);
7831
7832 /* Tell the binding oracle what kind of binding we are looking for. */
7833
7834 enum cp_oracle_request
7835 {
7836 CP_ORACLE_IDENTIFIER
7837 };
7838
7839 /* If this is non-NULL, then it is a "binding oracle" which can lazily
7840 create bindings when needed by the C compiler. The oracle is told
7841 the name and type of the binding to create. It can call pushdecl
7842 or the like to ensure the binding is visible; or do nothing,
7843 leaving the binding untouched. c-decl.c takes note of when the
7844 oracle has been called and will not call it again if it fails to
7845 create a given binding. */
7846
7847 typedef void cp_binding_oracle_function (enum cp_oracle_request, tree identifier);
7848
7849 extern cp_binding_oracle_function *cp_binding_oracle;
7850
7851 /* Set during diagnostics to record the failed constraint. This is a
7852 TREE_LIST whose VALUE is the constraint and whose PURPOSE are the
7853 instantiation arguments Defined in pt.c. */
7854
7855 extern tree current_failed_constraint;
7856
7857 /* An RAII class to manage the failed constraint. */
7858
7859 struct diagnosing_failed_constraint
7860 {
7861 diagnosing_failed_constraint (tree, tree, bool);
7862 ~diagnosing_failed_constraint ();
7863 static bool replay_errors_p ();
7864
7865 bool diagnosing_error;
7866 };
7867
7868 /* in constraint.cc */
7869
7870 extern cp_expr finish_constraint_or_expr (location_t, cp_expr, cp_expr);
7871 extern cp_expr finish_constraint_and_expr (location_t, cp_expr, cp_expr);
7872 extern cp_expr finish_constraint_primary_expr (cp_expr);
7873 extern tree finish_concept_definition (cp_expr, tree);
7874 extern tree combine_constraint_expressions (tree, tree);
7875 extern tree append_constraint (tree, tree);
7876 extern tree get_constraints (const_tree);
7877 extern void set_constraints (tree, tree);
7878 extern void remove_constraints (tree);
7879 extern tree current_template_constraints (void);
7880 extern tree associate_classtype_constraints (tree);
7881 extern tree build_constraints (tree, tree);
7882 extern tree maybe_substitute_reqs_for (tree, const_tree);
7883 extern tree get_template_head_requirements (tree);
7884 extern tree get_trailing_function_requirements (tree);
7885 extern tree get_shorthand_constraints (tree);
7886
7887 extern tree build_concept_id (tree);
7888 extern tree build_type_constraint (tree, tree, tsubst_flags_t);
7889 extern tree build_concept_check (tree, tree, tsubst_flags_t);
7890 extern tree build_concept_check (tree, tree, tree, tsubst_flags_t);
7891
7892 extern tree_pair finish_type_constraints (tree, tree, tsubst_flags_t);
7893 extern tree build_constrained_parameter (tree, tree, tree = NULL_TREE);
7894 extern void placeholder_extract_concept_and_args (tree, tree&, tree&);
7895 extern bool equivalent_placeholder_constraints (tree, tree);
7896 extern hashval_t hash_placeholder_constraint (tree);
7897 extern bool deduce_constrained_parameter (tree, tree&, tree&);
7898 extern tree resolve_constraint_check (tree);
7899 extern tree check_function_concept (tree);
7900 extern tree finish_template_introduction (tree, tree, location_t loc);
7901 extern bool valid_requirements_p (tree);
7902 extern tree finish_concept_name (tree);
7903 extern tree finish_shorthand_constraint (tree, tree);
7904 extern tree finish_requires_expr (location_t, tree, tree);
7905 extern tree finish_simple_requirement (location_t, tree);
7906 extern tree finish_type_requirement (location_t, tree);
7907 extern tree finish_compound_requirement (location_t, tree, tree, bool);
7908 extern tree finish_nested_requirement (location_t, tree);
7909 extern void check_constrained_friend (tree, tree);
7910 extern tree tsubst_requires_expr (tree, tree, tsubst_flags_t, tree);
7911 extern tree tsubst_constraint (tree, tree, tsubst_flags_t, tree);
7912 extern tree tsubst_constraint_info (tree, tree, tsubst_flags_t, tree);
7913 extern tree tsubst_parameter_mapping (tree, tree, tsubst_flags_t, tree);
7914 extern tree get_mapped_args (tree);
7915
7916 struct processing_constraint_expression_sentinel
7917 {
7918 processing_constraint_expression_sentinel ();
7919 ~processing_constraint_expression_sentinel ();
7920 };
7921
7922 extern bool processing_constraint_expression_p ();
7923
7924 extern tree unpack_concept_check (tree);
7925 extern tree evaluate_concept_check (tree, tsubst_flags_t);
7926 extern tree satisfy_constraint_expression (tree);
7927 extern bool constraints_satisfied_p (tree);
7928 extern bool constraints_satisfied_p (tree, tree);
7929 extern void clear_satisfaction_cache ();
7930 extern bool* lookup_subsumption_result (tree, tree);
7931 extern bool save_subsumption_result (tree, tree, bool);
7932 extern tree find_template_parameters (tree, tree);
7933 extern bool equivalent_constraints (tree, tree);
7934 extern bool equivalently_constrained (tree, tree);
7935 extern bool subsumes_constraints (tree, tree);
7936 extern bool strictly_subsumes (tree, tree, tree);
7937 extern bool weakly_subsumes (tree, tree, tree);
7938 extern int more_constrained (tree, tree);
7939 extern bool at_least_as_constrained (tree, tree);
7940 extern bool constraints_equivalent_p (tree, tree);
7941 extern bool atomic_constraints_identical_p (tree, tree);
7942 extern hashval_t iterative_hash_constraint (tree, hashval_t);
7943 extern hashval_t hash_atomic_constraint (tree);
7944 extern void diagnose_constraints (location_t, tree, tree);
7945
7946 /* in logic.cc */
7947 extern bool subsumes (tree, tree);
7948
7949 /* In class.c */
7950 extern void cp_finish_injected_record_type (tree);
7951
7952 /* in vtable-class-hierarchy.c */
7953 extern void vtv_compute_class_hierarchy_transitive_closure (void);
7954 extern void vtv_generate_init_routine (void);
7955 extern void vtv_save_class_info (tree);
7956 extern void vtv_recover_class_info (void);
7957 extern void vtv_build_vtable_verify_fndecl (void);
7958
7959 /* In constexpr.c */
7960 extern void fini_constexpr (void);
7961 extern bool literal_type_p (tree);
7962 extern tree register_constexpr_fundef (tree, tree);
7963 extern bool is_valid_constexpr_fn (tree, bool);
7964 extern bool check_constexpr_ctor_body (tree, tree, bool);
7965 extern tree constexpr_fn_retval (tree);
7966 extern tree ensure_literal_type_for_constexpr_object (tree);
7967 extern bool potential_constant_expression (tree);
7968 extern bool is_constant_expression (tree);
7969 extern bool is_nondependent_constant_expression (tree);
7970 extern bool is_nondependent_static_init_expression (tree);
7971 extern bool is_static_init_expression (tree);
7972 extern bool potential_rvalue_constant_expression (tree);
7973 extern bool require_potential_constant_expression (tree);
7974 extern bool require_constant_expression (tree);
7975 extern bool require_rvalue_constant_expression (tree);
7976 extern bool require_potential_rvalue_constant_expression (tree);
7977 extern tree cxx_constant_value (tree, tree = NULL_TREE);
7978 extern void cxx_constant_dtor (tree, tree);
7979 extern tree cxx_constant_init (tree, tree = NULL_TREE);
7980 extern tree maybe_constant_value (tree, tree = NULL_TREE, bool = false, bool = false);
7981 extern tree maybe_constant_init (tree, tree = NULL_TREE, bool = false);
7982 extern tree fold_non_dependent_expr (tree,
7983 tsubst_flags_t = tf_warning_or_error,
7984 bool = false, tree = NULL_TREE);
7985 extern tree maybe_fold_non_dependent_expr (tree,
7986 tsubst_flags_t = tf_warning_or_error);
7987 extern tree fold_non_dependent_init (tree,
7988 tsubst_flags_t = tf_warning_or_error,
7989 bool = false, tree = NULL_TREE);
7990 extern tree fold_simple (tree);
7991 extern bool reduced_constant_expression_p (tree);
7992 extern bool is_instantiation_of_constexpr (tree);
7993 extern bool var_in_constexpr_fn (tree);
7994 extern bool var_in_maybe_constexpr_fn (tree);
7995 extern void explain_invalid_constexpr_fn (tree);
7996 extern vec<tree> cx_error_context (void);
7997 extern tree fold_sizeof_expr (tree);
7998 extern void clear_cv_and_fold_caches (bool = true);
7999 extern tree unshare_constructor (tree CXX_MEM_STAT_INFO);
8000
8001 /* In cp-ubsan.c */
8002 extern void cp_ubsan_maybe_instrument_member_call (tree);
8003 extern void cp_ubsan_instrument_member_accesses (tree *);
8004 extern tree cp_ubsan_maybe_instrument_downcast (location_t, tree, tree, tree);
8005 extern tree cp_ubsan_maybe_instrument_cast_to_vbase (location_t, tree, tree);
8006 extern void cp_ubsan_maybe_initialize_vtbl_ptrs (tree);
8007
8008 /* In coroutines.cc */
8009 extern tree finish_co_return_stmt (location_t, tree);
8010 extern tree finish_co_await_expr (location_t, tree);
8011 extern tree finish_co_yield_expr (location_t, tree);
8012 extern tree coro_validate_builtin_call (tree,
8013 tsubst_flags_t = tf_warning_or_error);
8014 extern bool morph_fn_to_coro (tree, tree *, tree *);
8015 extern tree coro_get_actor_function (tree);
8016 extern tree coro_get_destroy_function (tree);
8017 extern tree coro_get_ramp_function (tree);
8018
8019 /* Inline bodies. */
8020
8021 inline tree
ovl_first(tree node)8022 ovl_first (tree node)
8023 {
8024 while (TREE_CODE (node) == OVERLOAD)
8025 node = OVL_FUNCTION (node);
8026 return node;
8027 }
8028
8029 inline bool
type_unknown_p(const_tree expr)8030 type_unknown_p (const_tree expr)
8031 {
8032 return TREE_TYPE (expr) == unknown_type_node;
8033 }
8034
8035 inline hashval_t
hash(const value_type decl)8036 named_decl_hash::hash (const value_type decl)
8037 {
8038 tree name = OVL_NAME (decl);
8039 return name ? IDENTIFIER_HASH_VALUE (name) : 0;
8040 }
8041
8042 inline bool
equal(const value_type existing,compare_type candidate)8043 named_decl_hash::equal (const value_type existing, compare_type candidate)
8044 {
8045 tree name = OVL_NAME (existing);
8046 return candidate == name;
8047 }
8048
8049 inline bool
null_node_p(const_tree expr)8050 null_node_p (const_tree expr)
8051 {
8052 STRIP_ANY_LOCATION_WRAPPER (expr);
8053 return expr == null_node;
8054 }
8055
8056 /* True iff T is a variable template declaration. */
8057 inline bool
variable_template_p(tree t)8058 variable_template_p (tree t)
8059 {
8060 if (TREE_CODE (t) != TEMPLATE_DECL)
8061 return false;
8062 if (!PRIMARY_TEMPLATE_P (t))
8063 return false;
8064 if (tree r = DECL_TEMPLATE_RESULT (t))
8065 return VAR_P (r);
8066 return false;
8067 }
8068
8069 /* True iff T is a standard concept definition. This will return
8070 true for both the template and underlying declaration. */
8071
8072 inline bool
standard_concept_p(tree t)8073 standard_concept_p (tree t)
8074 {
8075 if (TREE_CODE (t) == TEMPLATE_DECL)
8076 t = DECL_TEMPLATE_RESULT (t);
8077 return TREE_CODE (t) == CONCEPT_DECL;
8078 }
8079
8080 /* True iff T is a variable concept definition. This will return
8081 true for both the template and the underlying declaration. */
8082
8083 inline bool
variable_concept_p(tree t)8084 variable_concept_p (tree t)
8085 {
8086 if (TREE_CODE (t) == TEMPLATE_DECL)
8087 t = DECL_TEMPLATE_RESULT (t);
8088 return VAR_P (t) && DECL_DECLARED_CONCEPT_P (t);
8089 }
8090
8091 /* True iff T is a function concept definition or an overload set
8092 containing multiple function concepts. This will return true for
8093 both the template and the underlying declaration. */
8094
8095 inline bool
function_concept_p(tree t)8096 function_concept_p (tree t)
8097 {
8098 if (TREE_CODE (t) == OVERLOAD)
8099 t = OVL_FIRST (t);
8100 if (TREE_CODE (t) == TEMPLATE_DECL)
8101 t = DECL_TEMPLATE_RESULT (t);
8102 return TREE_CODE (t) == FUNCTION_DECL && DECL_DECLARED_CONCEPT_P (t);
8103 }
8104
8105 /* True iff T is a standard, variable, or function concept. */
8106
8107 inline bool
concept_definition_p(tree t)8108 concept_definition_p (tree t)
8109 {
8110 if (t == error_mark_node)
8111 return false;
8112
8113 /* Adjust for function concept overloads. */
8114 if (TREE_CODE (t) == OVERLOAD)
8115 t = OVL_FIRST (t);
8116
8117 /* See through templates. */
8118 if (TREE_CODE (t) == TEMPLATE_DECL)
8119 t = DECL_TEMPLATE_RESULT (t);
8120
8121 /* The obvious and easy case. */
8122 if (TREE_CODE (t) == CONCEPT_DECL)
8123 return true;
8124
8125 /* Definitely not a concept. */
8126 if (!VAR_OR_FUNCTION_DECL_P (t))
8127 return false;
8128 if (!DECL_LANG_SPECIFIC (t))
8129 return false;
8130
8131 return DECL_DECLARED_CONCEPT_P (t);
8132 }
8133
8134 /* Same as above, but for const trees. */
8135
8136 inline bool
concept_definition_p(const_tree t)8137 concept_definition_p (const_tree t)
8138 {
8139 return concept_definition_p (const_cast<tree> (t));
8140 }
8141
8142 /* True if t is an expression that checks a concept. */
8143
8144 inline bool
concept_check_p(const_tree t)8145 concept_check_p (const_tree t)
8146 {
8147 if (TREE_CODE (t) == CALL_EXPR)
8148 t = CALL_EXPR_FN (t);
8149 if (t && TREE_CODE (t) == TEMPLATE_ID_EXPR)
8150 return concept_definition_p (TREE_OPERAND (t, 0));
8151 return false;
8152 }
8153
8154 /* True if t is a "constrained auto" type-specifier. */
8155
8156 inline bool
is_constrained_auto(const_tree t)8157 is_constrained_auto (const_tree t)
8158 {
8159 return is_auto (t) && PLACEHOLDER_TYPE_CONSTRAINTS (t);
8160 }
8161
8162 /* True if CODE, a tree code, denotes a tree whose operand is not evaluated
8163 as per [expr.context], i.e., an operand to sizeof, typeof, decltype, or
8164 alignof. */
8165
8166 inline bool
unevaluated_p(tree_code code)8167 unevaluated_p (tree_code code)
8168 {
8169 return (code == DECLTYPE_TYPE
8170 || code == ALIGNOF_EXPR
8171 || code == SIZEOF_EXPR
8172 || code == NOEXCEPT_EXPR);
8173 }
8174
8175 /* RAII class to push/pop class scope T; if T is not a class, do nothing. */
8176
8177 struct push_nested_class_guard
8178 {
8179 bool push;
push_nested_class_guardpush_nested_class_guard8180 push_nested_class_guard (tree t)
8181 : push (t && CLASS_TYPE_P (t))
8182 {
8183 if (push)
8184 push_nested_class (t);
8185 }
~push_nested_class_guardpush_nested_class_guard8186 ~push_nested_class_guard ()
8187 {
8188 if (push)
8189 pop_nested_class ();
8190 }
8191 };
8192
8193 #if CHECKING_P
8194 namespace selftest {
8195 extern void run_cp_tests (void);
8196
8197 /* Declarations for specific families of tests within cp,
8198 by source file, in alphabetical order. */
8199 extern void cp_pt_c_tests ();
8200 extern void cp_tree_c_tests (void);
8201 } // namespace selftest
8202 #endif /* #if CHECKING_P */
8203
8204 /* -- end of C++ */
8205
8206 #endif /* ! GCC_CP_TREE_H */
8207