1 /* Definitions for -*- C++ -*- parsing and type checking.
2 Copyright (C) 1987-2022 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_EXPLICIT_VOID_LIST,
129 CPTI_VTBL_TYPE,
130 CPTI_VTBL_PTR_TYPE,
131 CPTI_GLOBAL,
132 CPTI_ABORT_FNDECL,
133 CPTI_AGGR_TAG,
134 CPTI_CONV_OP_MARKER,
135
136 CPTI_CTOR_IDENTIFIER,
137 CPTI_COMPLETE_CTOR_IDENTIFIER,
138 CPTI_BASE_CTOR_IDENTIFIER,
139 CPTI_DTOR_IDENTIFIER,
140 CPTI_COMPLETE_DTOR_IDENTIFIER,
141 CPTI_BASE_DTOR_IDENTIFIER,
142 CPTI_DELETING_DTOR_IDENTIFIER,
143 CPTI_CONV_OP_IDENTIFIER,
144 CPTI_DELTA_IDENTIFIER,
145 CPTI_IN_CHARGE_IDENTIFIER,
146 CPTI_VTT_PARM_IDENTIFIER,
147 CPTI_AS_BASE_IDENTIFIER,
148 CPTI_THIS_IDENTIFIER,
149 CPTI_PFN_IDENTIFIER,
150 CPTI_VPTR_IDENTIFIER,
151 CPTI_GLOBAL_IDENTIFIER,
152 CPTI_ANON_IDENTIFIER,
153 CPTI_AUTO_IDENTIFIER,
154 CPTI_DECLTYPE_AUTO_IDENTIFIER,
155 CPTI_INIT_LIST_IDENTIFIER,
156 CPTI_FOR_RANGE__IDENTIFIER,
157 CPTI_FOR_BEGIN__IDENTIFIER,
158 CPTI_FOR_END__IDENTIFIER,
159 CPTI_FOR_RANGE_IDENTIFIER,
160 CPTI_FOR_BEGIN_IDENTIFIER,
161 CPTI_FOR_END_IDENTIFIER,
162 CPTI_ABI_TAG_IDENTIFIER,
163 CPTI_ALIGNED_IDENTIFIER,
164 CPTI_BEGIN_IDENTIFIER,
165 CPTI_END_IDENTIFIER,
166 CPTI_GET_IDENTIFIER,
167 CPTI_GNU_IDENTIFIER,
168 CPTI_TUPLE_ELEMENT_IDENTIFIER,
169 CPTI_TUPLE_SIZE_IDENTIFIER,
170 CPTI_TYPE_IDENTIFIER,
171 CPTI_VALUE_IDENTIFIER,
172 CPTI_FUN_IDENTIFIER,
173 CPTI_CLOSURE_IDENTIFIER,
174 CPTI_HEAP_UNINIT_IDENTIFIER,
175 CPTI_HEAP_IDENTIFIER,
176 CPTI_HEAP_DELETED_IDENTIFIER,
177 CPTI_HEAP_VEC_UNINIT_IDENTIFIER,
178 CPTI_HEAP_VEC_IDENTIFIER,
179 CPTI_OMP_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_NULLPTR,
190 CPTI_NULLPTR_TYPE,
191
192 CPTI_ANY_TARG,
193
194 CPTI_MODULE_HWM,
195 /* Nodes after here change during compilation, or should not be in
196 the module's global tree table. Such nodes must be locatable
197 via name lookup or type-construction, as those are the only
198 cross-TU matching capabilities remaining. */
199
200 /* We must find these via the global namespace. */
201 CPTI_STD,
202 CPTI_ABI,
203
204 /* These are created at init time, but the library/headers provide
205 definitions. */
206 CPTI_ALIGN_TYPE,
207 CPTI_TERMINATE_FN,
208 CPTI_CALL_UNEXPECTED_FN,
209
210 /* These are lazily inited. */
211 CPTI_CONST_TYPE_INFO_TYPE,
212 CPTI_GET_EXCEPTION_PTR_FN,
213 CPTI_BEGIN_CATCH_FN,
214 CPTI_END_CATCH_FN,
215 CPTI_ALLOCATE_EXCEPTION_FN,
216 CPTI_FREE_EXCEPTION_FN,
217 CPTI_THROW_FN,
218 CPTI_RETHROW_FN,
219 CPTI_ATEXIT_FN_PTR_TYPE,
220 CPTI_ATEXIT,
221 CPTI_DSO_HANDLE,
222 CPTI_DCAST,
223
224 CPTI_SOURCE_LOCATION_IMPL,
225
226 CPTI_FALLBACK_DFLOAT32_TYPE,
227 CPTI_FALLBACK_DFLOAT64_TYPE,
228 CPTI_FALLBACK_DFLOAT128_TYPE,
229
230 CPTI_MAX
231 };
232
233 extern GTY(()) tree cp_global_trees[CPTI_MAX];
234
235 #define wchar_decl_node cp_global_trees[CPTI_WCHAR_DECL]
236 #define vtable_entry_type cp_global_trees[CPTI_VTABLE_ENTRY_TYPE]
237 /* The type used to represent an offset by which to adjust the `this'
238 pointer in pointer-to-member types. */
239 #define delta_type_node cp_global_trees[CPTI_DELTA_TYPE]
240 /* The type used to represent an index into the vtable. */
241 #define vtable_index_type cp_global_trees[CPTI_VTABLE_INDEX_TYPE]
242
243 #define class_type_node cp_global_trees[CPTI_CLASS_TYPE]
244 #define unknown_type_node cp_global_trees[CPTI_UNKNOWN_TYPE]
245 #define init_list_type_node cp_global_trees[CPTI_INIT_LIST_TYPE]
246 #define explicit_void_list_node cp_global_trees[CPTI_EXPLICIT_VOID_LIST]
247 #define vtbl_type_node cp_global_trees[CPTI_VTBL_TYPE]
248 #define vtbl_ptr_type_node cp_global_trees[CPTI_VTBL_PTR_TYPE]
249 #define std_node cp_global_trees[CPTI_STD]
250 #define abi_node cp_global_trees[CPTI_ABI]
251 #define global_namespace cp_global_trees[CPTI_GLOBAL]
252 #define const_type_info_type_node cp_global_trees[CPTI_CONST_TYPE_INFO_TYPE]
253 #define conv_op_marker cp_global_trees[CPTI_CONV_OP_MARKER]
254 #define abort_fndecl cp_global_trees[CPTI_ABORT_FNDECL]
255 #define current_aggr cp_global_trees[CPTI_AGGR_TAG]
256 #define nullptr_node cp_global_trees[CPTI_NULLPTR]
257 #define nullptr_type_node cp_global_trees[CPTI_NULLPTR_TYPE]
258 /* std::align_val_t */
259 #define align_type_node cp_global_trees[CPTI_ALIGN_TYPE]
260
261 /* We cache these tree nodes so as to call get_identifier less frequently.
262 For identifiers for functions, including special member functions such
263 as ctors and assignment operators, the nodes can be used (among other
264 things) to iterate over their overloads defined by/for a type. For
265 example:
266
267 tree ovlid = assign_op_identifier;
268 tree overloads = get_class_binding (type, ovlid);
269 for (ovl_iterator it (overloads); it; ++it) { ... }
270
271 iterates over the set of implicitly and explicitly defined overloads
272 of the assignment operator for type (including the copy and move
273 assignment operators, whether deleted or not). */
274
275 /* The name of a constructor that takes an in-charge parameter to
276 decide whether or not to construct virtual base classes. */
277 #define ctor_identifier cp_global_trees[CPTI_CTOR_IDENTIFIER]
278 /* The name of a constructor that constructs virtual base classes. */
279 #define complete_ctor_identifier cp_global_trees[CPTI_COMPLETE_CTOR_IDENTIFIER]
280 /* The name of a constructor that does not construct virtual base classes. */
281 #define base_ctor_identifier cp_global_trees[CPTI_BASE_CTOR_IDENTIFIER]
282 /* The name of a destructor that takes an in-charge parameter to
283 decide whether or not to destroy virtual base classes and whether
284 or not to delete the object. */
285 #define dtor_identifier cp_global_trees[CPTI_DTOR_IDENTIFIER]
286 /* The name of a destructor that destroys virtual base classes. */
287 #define complete_dtor_identifier cp_global_trees[CPTI_COMPLETE_DTOR_IDENTIFIER]
288 /* The name of a destructor that does not destroy virtual base
289 classes. */
290 #define base_dtor_identifier cp_global_trees[CPTI_BASE_DTOR_IDENTIFIER]
291 /* The name of a destructor that destroys virtual base classes, and
292 then deletes the entire object. */
293 #define deleting_dtor_identifier cp_global_trees[CPTI_DELETING_DTOR_IDENTIFIER]
294
295 /* The name used for conversion operators -- but note that actual
296 conversion functions use special identifiers outside the identifier
297 table. */
298 #define conv_op_identifier cp_global_trees[CPTI_CONV_OP_IDENTIFIER]
299
300 #define delta_identifier cp_global_trees[CPTI_DELTA_IDENTIFIER]
301 #define in_charge_identifier cp_global_trees[CPTI_IN_CHARGE_IDENTIFIER]
302 /* The name of the parameter that contains a pointer to the VTT to use
303 for this subobject constructor or destructor. */
304 #define vtt_parm_identifier cp_global_trees[CPTI_VTT_PARM_IDENTIFIER]
305 #define as_base_identifier cp_global_trees[CPTI_AS_BASE_IDENTIFIER]
306 #define this_identifier cp_global_trees[CPTI_THIS_IDENTIFIER]
307 #define pfn_identifier cp_global_trees[CPTI_PFN_IDENTIFIER]
308 #define vptr_identifier cp_global_trees[CPTI_VPTR_IDENTIFIER]
309 /* The name of the ::, std & anon namespaces. */
310 #define global_identifier cp_global_trees[CPTI_GLOBAL_IDENTIFIER]
311 #define anon_identifier cp_global_trees[CPTI_ANON_IDENTIFIER]
312 /* auto and declspec(auto) identifiers. */
313 #define auto_identifier cp_global_trees[CPTI_AUTO_IDENTIFIER]
314 #define decltype_auto_identifier cp_global_trees[CPTI_DECLTYPE_AUTO_IDENTIFIER]
315 #define init_list_identifier cp_global_trees[CPTI_INIT_LIST_IDENTIFIER]
316 #define for_range__identifier cp_global_trees[CPTI_FOR_RANGE__IDENTIFIER]
317 #define for_begin__identifier cp_global_trees[CPTI_FOR_BEGIN__IDENTIFIER]
318 #define for_end__identifier cp_global_trees[CPTI_FOR_END__IDENTIFIER]
319 #define for_range_identifier cp_global_trees[CPTI_FOR_RANGE_IDENTIFIER]
320 #define for_begin_identifier cp_global_trees[CPTI_FOR_BEGIN_IDENTIFIER]
321 #define for_end_identifier cp_global_trees[CPTI_FOR_END_IDENTIFIER]
322 #define abi_tag_identifier cp_global_trees[CPTI_ABI_TAG_IDENTIFIER]
323 #define aligned_identifier cp_global_trees[CPTI_ALIGNED_IDENTIFIER]
324 #define begin_identifier cp_global_trees[CPTI_BEGIN_IDENTIFIER]
325 #define end_identifier cp_global_trees[CPTI_END_IDENTIFIER]
326 #define get__identifier cp_global_trees[CPTI_GET_IDENTIFIER]
327 #define gnu_identifier cp_global_trees[CPTI_GNU_IDENTIFIER]
328 #define tuple_element_identifier cp_global_trees[CPTI_TUPLE_ELEMENT_IDENTIFIER]
329 #define tuple_size_identifier cp_global_trees[CPTI_TUPLE_SIZE_IDENTIFIER]
330 #define type_identifier cp_global_trees[CPTI_TYPE_IDENTIFIER]
331 #define value_identifier cp_global_trees[CPTI_VALUE_IDENTIFIER]
332 #define fun_identifier cp_global_trees[CPTI_FUN_IDENTIFIER]
333 #define closure_identifier cp_global_trees[CPTI_CLOSURE_IDENTIFIER]
334 #define heap_uninit_identifier cp_global_trees[CPTI_HEAP_UNINIT_IDENTIFIER]
335 #define heap_identifier cp_global_trees[CPTI_HEAP_IDENTIFIER]
336 #define heap_deleted_identifier cp_global_trees[CPTI_HEAP_DELETED_IDENTIFIER]
337 #define heap_vec_uninit_identifier cp_global_trees[CPTI_HEAP_VEC_UNINIT_IDENTIFIER]
338 #define heap_vec_identifier cp_global_trees[CPTI_HEAP_VEC_IDENTIFIER]
339 #define omp_identifier cp_global_trees[CPTI_OMP_IDENTIFIER]
340 #define lang_name_c cp_global_trees[CPTI_LANG_NAME_C]
341 #define lang_name_cplusplus cp_global_trees[CPTI_LANG_NAME_CPLUSPLUS]
342
343 /* Exception specifiers used for throw(), noexcept(true),
344 noexcept(false) and deferred noexcept. We rely on these being
345 uncloned. */
346 #define empty_except_spec cp_global_trees[CPTI_EMPTY_EXCEPT_SPEC]
347 #define noexcept_true_spec cp_global_trees[CPTI_NOEXCEPT_TRUE_SPEC]
348 #define noexcept_false_spec cp_global_trees[CPTI_NOEXCEPT_FALSE_SPEC]
349 #define noexcept_deferred_spec cp_global_trees[CPTI_NOEXCEPT_DEFERRED_SPEC]
350
351 /* Exception handling function declarations. */
352 #define terminate_fn cp_global_trees[CPTI_TERMINATE_FN]
353 #define call_unexpected_fn cp_global_trees[CPTI_CALL_UNEXPECTED_FN]
354 #define get_exception_ptr_fn cp_global_trees[CPTI_GET_EXCEPTION_PTR_FN]
355 #define begin_catch_fn cp_global_trees[CPTI_BEGIN_CATCH_FN]
356 #define end_catch_fn cp_global_trees[CPTI_END_CATCH_FN]
357 #define allocate_exception_fn cp_global_trees[CPTI_ALLOCATE_EXCEPTION_FN]
358 #define free_exception_fn cp_global_trees[CPTI_FREE_EXCEPTION_FN]
359 #define throw_fn cp_global_trees[CPTI_THROW_FN]
360 #define rethrow_fn cp_global_trees[CPTI_RETHROW_FN]
361
362 /* The type of the function-pointer argument to "__cxa_atexit" (or
363 "std::atexit", if "__cxa_atexit" is not being used). */
364 #define atexit_fn_ptr_type_node cp_global_trees[CPTI_ATEXIT_FN_PTR_TYPE]
365
366 /* A pointer to `std::atexit'. */
367 #define atexit_node cp_global_trees[CPTI_ATEXIT]
368
369 /* A pointer to `__dso_handle'. */
370 #define dso_handle_node cp_global_trees[CPTI_DSO_HANDLE]
371
372 /* The declaration of the dynamic_cast runtime. */
373 #define dynamic_cast_node cp_global_trees[CPTI_DCAST]
374
375 /* The type of a destructor. */
376 #define cleanup_type cp_global_trees[CPTI_CLEANUP_TYPE]
377
378 /* The type of the vtt parameter passed to subobject constructors and
379 destructors. */
380 #define vtt_parm_type cp_global_trees[CPTI_VTT_PARM_TYPE]
381
382 /* A node which matches any template argument. */
383 #define any_targ_node cp_global_trees[CPTI_ANY_TARG]
384
385 /* std::source_location::__impl class. */
386 #define source_location_impl cp_global_trees[CPTI_SOURCE_LOCATION_IMPL]
387
388 /* Node to indicate default access. This must be distinct from the
389 access nodes in tree.h. */
390
391 #define access_default_node null_node
392
393 /* Variant of dfloat{32,64,128}_type_node only used for fundamental
394 rtti purposes if DFP is disabled. */
395 #define fallback_dfloat32_type cp_global_trees[CPTI_FALLBACK_DFLOAT32_TYPE]
396 #define fallback_dfloat64_type cp_global_trees[CPTI_FALLBACK_DFLOAT64_TYPE]
397 #define fallback_dfloat128_type cp_global_trees[CPTI_FALLBACK_DFLOAT128_TYPE]
398
399
400 #include "name-lookup.h"
401
402 /* Usage of TREE_LANG_FLAG_?:
403 0: IDENTIFIER_KIND_BIT_0 (in IDENTIFIER_NODE)
404 NEW_EXPR_USE_GLOBAL (in NEW_EXPR).
405 COND_EXPR_IS_VEC_DELETE (in COND_EXPR).
406 DELETE_EXPR_USE_GLOBAL (in DELETE_EXPR).
407 CLEANUP_P (in TRY_BLOCK)
408 AGGR_INIT_VIA_CTOR_P (in AGGR_INIT_EXPR)
409 PTRMEM_OK_P (in ADDR_EXPR, OFFSET_REF, SCOPE_REF)
410 PAREN_STRING_LITERAL_P (in STRING_CST)
411 CP_DECL_THREAD_LOCAL_P (in VAR_DECL)
412 KOENIG_LOOKUP_P (in CALL_EXPR)
413 STATEMENT_LIST_NO_SCOPE (in STATEMENT_LIST).
414 EXPR_STMT_STMT_EXPR_RESULT (in EXPR_STMT)
415 STMT_EXPR_NO_SCOPE (in STMT_EXPR)
416 BIND_EXPR_TRY_BLOCK (in BIND_EXPR)
417 TYPENAME_IS_ENUM_P (in TYPENAME_TYPE)
418 OMP_FOR_GIMPLIFYING_P (in OMP_FOR, OMP_SIMD, OMP_DISTRIBUTE,
419 and OMP_TASKLOOP)
420 BASELINK_QUALIFIED_P (in BASELINK)
421 TARGET_EXPR_IMPLICIT_P (in TARGET_EXPR)
422 TEMPLATE_PARM_PARAMETER_PACK (in TEMPLATE_PARM_INDEX)
423 ATTR_IS_DEPENDENT (in the TREE_LIST for an attribute)
424 ABI_TAG_IMPLICIT (in the TREE_LIST for the argument of abi_tag)
425 LAMBDA_CAPTURE_EXPLICIT_P (in a TREE_LIST in LAMBDA_EXPR_CAPTURE_LIST)
426 PARENTHESIZED_LIST_P (in the TREE_LIST for a parameter-declaration-list)
427 CONSTRUCTOR_IS_DIRECT_INIT (in CONSTRUCTOR)
428 LAMBDA_EXPR_CAPTURES_THIS_P (in LAMBDA_EXPR)
429 DECLTYPE_FOR_LAMBDA_CAPTURE (in DECLTYPE_TYPE)
430 VEC_INIT_EXPR_IS_CONSTEXPR (in VEC_INIT_EXPR)
431 DECL_OVERRIDE_P (in FUNCTION_DECL)
432 IMPLICIT_CONV_EXPR_DIRECT_INIT (in IMPLICIT_CONV_EXPR)
433 TRANSACTION_EXPR_IS_STMT (in TRANSACTION_EXPR)
434 CONVERT_EXPR_VBASE_PATH (in CONVERT_EXPR)
435 PACK_EXPANSION_LOCAL_P (in *_PACK_EXPANSION)
436 TINFO_HAS_ACCESS_ERRORS (in TEMPLATE_INFO)
437 SIZEOF_EXPR_TYPE_P (in SIZEOF_EXPR)
438 COMPOUND_REQ_NOEXCEPT_P (in COMPOUND_REQ)
439 WILDCARD_PACK_P (in WILDCARD_DECL)
440 BLOCK_OUTER_CURLY_BRACE_P (in BLOCK)
441 FOLD_EXPR_MODOP_P (*_FOLD_EXPR)
442 IF_STMT_CONSTEXPR_P (IF_STMT)
443 DECL_NAMESPACE_INLINE_P (in NAMESPACE_DECL)
444 SWITCH_STMT_ALL_CASES_P (in SWITCH_STMT)
445 REINTERPRET_CAST_P (in NOP_EXPR)
446 ALIGNOF_EXPR_STD_P (in ALIGNOF_EXPR)
447 OVL_DEDUP_P (in OVERLOAD)
448 ATOMIC_CONSTR_MAP_INSTANTIATED_P (in ATOMIC_CONSTR)
449 1: IDENTIFIER_KIND_BIT_1 (in IDENTIFIER_NODE)
450 TI_PENDING_TEMPLATE_FLAG.
451 TEMPLATE_PARMS_FOR_INLINE.
452 DELETE_EXPR_USE_VEC (in DELETE_EXPR).
453 (TREE_CALLS_NEW) (in _EXPR or _REF) (commented-out).
454 ICS_ELLIPSIS_FLAG (in _CONV)
455 DECL_INITIALIZED_P (in VAR_DECL)
456 TYPENAME_IS_CLASS_P (in TYPENAME_TYPE)
457 STMT_IS_FULL_EXPR_P (in _STMT)
458 TARGET_EXPR_LIST_INIT_P (in TARGET_EXPR)
459 LAMBDA_EXPR_MUTABLE_P (in LAMBDA_EXPR)
460 DECL_FINAL_P (in FUNCTION_DECL)
461 QUALIFIED_NAME_IS_TEMPLATE (in SCOPE_REF)
462 CONSTRUCTOR_IS_DEPENDENT (in CONSTRUCTOR)
463 TINFO_USED_TEMPLATE_ID (in TEMPLATE_INFO)
464 PACK_EXPANSION_SIZEOF_P (in *_PACK_EXPANSION)
465 OVL_USING_P (in OVERLOAD)
466 IMPLICIT_CONV_EXPR_NONTYPE_ARG (in IMPLICIT_CONV_EXPR)
467 BASELINK_FUNCTIONS_MAYBE_INCOMPLETE_P (in BASELINK)
468 BIND_EXPR_VEC_DTOR (in BIND_EXPR)
469 ATOMIC_CONSTR_EXPR_FROM_CONCEPT_P (in ATOMIC_CONSTR)
470 2: IDENTIFIER_KIND_BIT_2 (in IDENTIFIER_NODE)
471 ICS_THIS_FLAG (in _CONV)
472 DECL_INITIALIZED_BY_CONSTANT_EXPRESSION_P (in VAR_DECL)
473 STATEMENT_LIST_TRY_BLOCK (in STATEMENT_LIST)
474 TYPENAME_IS_RESOLVING_P (in TYPENAME_TYPE)
475 TARGET_EXPR_DIRECT_INIT_P (in TARGET_EXPR)
476 FNDECL_USED_AUTO (in FUNCTION_DECL)
477 DECLTYPE_FOR_LAMBDA_PROXY (in DECLTYPE_TYPE)
478 REF_PARENTHESIZED_P (in COMPONENT_REF, INDIRECT_REF, SCOPE_REF,
479 VIEW_CONVERT_EXPR, PAREN_EXPR)
480 AGGR_INIT_ZERO_FIRST (in AGGR_INIT_EXPR)
481 CONSTRUCTOR_MUTABLE_POISON (in CONSTRUCTOR)
482 OVL_HIDDEN_P (in OVERLOAD)
483 IF_STMT_CONSTEVAL_P (in IF_STMT)
484 SWITCH_STMT_NO_BREAK_P (in SWITCH_STMT)
485 LAMBDA_EXPR_CAPTURE_OPTIMIZED (in LAMBDA_EXPR)
486 IMPLICIT_CONV_EXPR_BRACED_INIT (in IMPLICIT_CONV_EXPR)
487 PACK_EXPANSION_AUTO_P (in *_PACK_EXPANSION)
488 3: IMPLICIT_RVALUE_P (in NON_LVALUE_EXPR or STATIC_CAST_EXPR)
489 ICS_BAD_FLAG (in _CONV)
490 FN_TRY_BLOCK_P (in TRY_BLOCK)
491 BIND_EXPR_BODY_BLOCK (in BIND_EXPR)
492 CALL_EXPR_ORDERED_ARGS (in CALL_EXPR, AGGR_INIT_EXPR)
493 DECLTYPE_FOR_REF_CAPTURE (in DECLTYPE_TYPE)
494 CONSTRUCTOR_C99_COMPOUND_LITERAL (in CONSTRUCTOR)
495 OVL_NESTED_P (in OVERLOAD)
496 DECL_MODULE_EXPORT_P (in _DECL)
497 PACK_EXPANSION_FORCE_EXTRA_ARGS_P (in *_PACK_EXPANSION)
498 4: IDENTIFIER_MARKED (IDENTIFIER_NODEs)
499 TREE_HAS_CONSTRUCTOR (in INDIRECT_REF, SAVE_EXPR, CONSTRUCTOR,
500 CALL_EXPR, or FIELD_DECL).
501 DECL_TINFO_P (in VAR_DECL, TYPE_DECL)
502 FUNCTION_REF_QUALIFIED (in FUNCTION_TYPE, METHOD_TYPE)
503 OVL_LOOKUP_P (in OVERLOAD)
504 LOOKUP_FOUND_P (in RECORD_TYPE, UNION_TYPE, ENUMERAL_TYPE, NAMESPACE_DECL)
505 FNDECL_MANIFESTLY_CONST_EVALUATED (in FUNCTION_DECL)
506 5: IDENTIFIER_VIRTUAL_P (in IDENTIFIER_NODE)
507 FUNCTION_RVALUE_QUALIFIED (in FUNCTION_TYPE, METHOD_TYPE)
508 CALL_EXPR_REVERSE_ARGS (in CALL_EXPR, AGGR_INIT_EXPR)
509 CONSTRUCTOR_PLACEHOLDER_BOUNDARY (in CONSTRUCTOR)
510 OVL_EXPORT_P (in OVERLOAD)
511 6: TYPE_MARKED_P (in _TYPE)
512 DECL_NONTRIVIALLY_INITIALIZED_P (in VAR_DECL)
513 RANGE_FOR_IVDEP (in RANGE_FOR_STMT)
514 CALL_EXPR_OPERATOR_SYNTAX (in CALL_EXPR, AGGR_INIT_EXPR)
515 CONSTRUCTOR_IS_DESIGNATED_INIT (in CONSTRUCTOR)
516
517 Usage of TYPE_LANG_FLAG_?:
518 0: TYPE_DEPENDENT_P
519 1: TYPE_HAS_USER_CONSTRUCTOR.
520 2: TYPE_HAS_LATE_RETURN_TYPE (in FUNCTION_TYPE, METHOD_TYPE)
521 TYPE_PTRMEMFUNC_FLAG (in RECORD_TYPE)
522 4: TYPE_HAS_NONTRIVIAL_DESTRUCTOR
523 5: CLASS_TYPE_P (in RECORD_TYPE and UNION_TYPE)
524 ENUM_FIXED_UNDERLYING_TYPE_P (in ENUMERAL_TYPE)
525 AUTO_IS_DECLTYPE (in TEMPLATE_TYPE_PARM)
526 6: TYPE_DEPENDENT_P_VALID
527
528 Usage of DECL_LANG_FLAG_?:
529 0: DECL_TEMPLATE_PARM_P (in PARM_DECL, CONST_DECL, TYPE_DECL, or TEMPLATE_DECL)
530 DECL_LOCAL_DECL_P (in FUNCTION_DECL, VAR_DECL)
531 DECL_MUTABLE_P (in FIELD_DECL)
532 DECL_DEPENDENT_P (in USING_DECL)
533 LABEL_DECL_BREAK (in LABEL_DECL)
534 1: C_TYPEDEF_EXPLICITLY_SIGNED (in TYPE_DECL).
535 DECL_TEMPLATE_INSTANTIATED (in a VAR_DECL or a FUNCTION_DECL)
536 DECL_MEMBER_TEMPLATE_P (in TEMPLATE_DECL)
537 USING_DECL_TYPENAME_P (in USING_DECL)
538 DECL_VLA_CAPTURE_P (in FIELD_DECL)
539 DECL_ARRAY_PARAMETER_P (in PARM_DECL)
540 LABEL_DECL_CONTINUE (in LABEL_DECL)
541 2: DECL_THIS_EXTERN (in VAR_DECL, FUNCTION_DECL or PARM_DECL)
542 DECL_IMPLICIT_TYPEDEF_P (in a TYPE_DECL)
543 DECL_CONSTRAINT_VAR_P (in a PARM_DECL)
544 TEMPLATE_DECL_COMPLEX_ALIAS_P (in TEMPLATE_DECL)
545 DECL_INSTANTIATING_NSDMI_P (in a FIELD_DECL)
546 LABEL_DECL_CDTOR (in LABEL_DECL)
547 USING_DECL_UNRELATED_P (in USING_DECL)
548 3: DECL_IN_AGGR_P.
549 4: DECL_C_BIT_FIELD (in a FIELD_DECL)
550 DECL_ANON_UNION_VAR_P (in a VAR_DECL)
551 DECL_SELF_REFERENCE_P (in a TYPE_DECL)
552 DECL_INVALID_OVERRIDER_P (in a FUNCTION_DECL)
553 DECL_UNINSTANIATED_TEMPLATE_FRIEND_P (in TEMPLATE_DECL)
554 5: DECL_INTERFACE_KNOWN.
555 6: DECL_THIS_STATIC (in VAR_DECL, FUNCTION_DECL or PARM_DECL)
556 DECL_FIELD_IS_BASE (in FIELD_DECL)
557 TYPE_DECL_ALIAS_P (in TYPE_DECL)
558 7: DECL_THUNK_P (in a member FUNCTION_DECL)
559 DECL_NORMAL_CAPTURE_P (in FIELD_DECL)
560 DECL_DECLARED_CONSTINIT_P (in VAR_DECL)
561 8: DECL_DECLARED_CONSTEXPR_P (in VAR_DECL, FUNCTION_DECL)
562
563 Usage of language-independent fields in a language-dependent manner:
564
565 TYPE_ALIAS_SET
566 This field is used by TYPENAME_TYPEs, TEMPLATE_TYPE_PARMs, and so
567 forth as a substitute for the mark bits provided in `lang_type'.
568 At present, only the six low-order bits are used.
569
570 TYPE_LANG_SLOT_1
571 For a FUNCTION_TYPE or METHOD_TYPE, this is TYPE_RAISES_EXCEPTIONS.
572 For a POINTER_TYPE (to a METHOD_TYPE), this is TYPE_PTRMEMFUNC_TYPE.
573 For an ENUMERAL_TYPE, BOUND_TEMPLATE_TEMPLATE_PARM_TYPE,
574 RECORD_TYPE or UNION_TYPE this is TYPE_TEMPLATE_INFO,
575
576 BINFO_VIRTUALS
577 For a binfo, this is a TREE_LIST. There is an entry for each
578 virtual function declared either in BINFO or its direct and
579 indirect primary bases.
580
581 The BV_DELTA of each node gives the amount by which to adjust the
582 `this' pointer when calling the function. If the method is an
583 overridden version of a base class method, then it is assumed
584 that, prior to adjustment, the this pointer points to an object
585 of the base class.
586
587 The BV_VCALL_INDEX of each node, if non-NULL, gives the vtable
588 index of the vcall offset for this entry.
589
590 The BV_FN is the declaration for the virtual function itself.
591
592 If BV_LOST_PRIMARY is set, it means that this entry is for a lost
593 primary virtual base and can be left null in the vtable.
594
595 BINFO_VTABLE
596 This is an expression with POINTER_TYPE that gives the value
597 to which the vptr should be initialized. Use get_vtbl_decl_for_binfo
598 to extract the VAR_DECL for the complete vtable.
599
600 DECL_VINDEX
601 This field is NULL for a non-virtual function. For a virtual
602 function, it is eventually set to an INTEGER_CST indicating the
603 index in the vtable at which this function can be found. When
604 a virtual function is declared, but before it is known what
605 function is overridden, this field is the error_mark_node.
606
607 Temporarily, it may be set to a TREE_LIST whose TREE_VALUE is
608 the virtual function this one overrides, and whose TREE_CHAIN is
609 the old DECL_VINDEX. */
610
611 /* Language-specific tree checkers. */
612
613 #define VAR_OR_FUNCTION_DECL_CHECK(NODE) \
614 TREE_CHECK2(NODE,VAR_DECL,FUNCTION_DECL)
615
616 #define TYPE_FUNCTION_OR_TEMPLATE_DECL_CHECK(NODE) \
617 TREE_CHECK3(NODE,TYPE_DECL,TEMPLATE_DECL,FUNCTION_DECL)
618
619 #define TYPE_FUNCTION_OR_TEMPLATE_DECL_P(NODE) \
620 (TREE_CODE (NODE) == TYPE_DECL || TREE_CODE (NODE) == TEMPLATE_DECL \
621 || TREE_CODE (NODE) == FUNCTION_DECL)
622
623 #define VAR_FUNCTION_OR_PARM_DECL_CHECK(NODE) \
624 TREE_CHECK3(NODE,VAR_DECL,FUNCTION_DECL,PARM_DECL)
625
626 #define VAR_TEMPL_TYPE_OR_FUNCTION_DECL_CHECK(NODE) \
627 TREE_CHECK4(NODE,VAR_DECL,FUNCTION_DECL,TYPE_DECL,TEMPLATE_DECL)
628
629 #define VAR_TEMPL_TYPE_FIELD_OR_FUNCTION_DECL_CHECK(NODE) \
630 TREE_CHECK5(NODE,VAR_DECL,FIELD_DECL,FUNCTION_DECL,TYPE_DECL,TEMPLATE_DECL)
631
632 #define BOUND_TEMPLATE_TEMPLATE_PARM_TYPE_CHECK(NODE) \
633 TREE_CHECK(NODE,BOUND_TEMPLATE_TEMPLATE_PARM)
634
635 #if defined ENABLE_TREE_CHECKING && (GCC_VERSION >= 2007)
636
637 /* Returns t iff the node can have a TEMPLATE_INFO field. */
638
639 inline tree
template_info_decl_check(const_tree t,const char * f,int l,const char * fn)640 template_info_decl_check (const_tree t, const char* f, int l, const char* fn)
641 {
642 switch (TREE_CODE (t))
643 {
644 case VAR_DECL:
645 case FUNCTION_DECL:
646 case FIELD_DECL:
647 case TYPE_DECL:
648 case CONCEPT_DECL:
649 case TEMPLATE_DECL:
650 return const_cast<tree>(t);
651 default:
652 break;
653 }
654 tree_check_failed (t, f, l, fn,
655 VAR_DECL, FUNCTION_DECL, FIELD_DECL, TYPE_DECL,
656 CONCEPT_DECL, TEMPLATE_DECL, 0);
657 gcc_unreachable ();
658 }
659
660 #define TEMPLATE_INFO_DECL_CHECK(NODE) \
661 template_info_decl_check ((NODE), __FILE__, __LINE__, __FUNCTION__)
662
663 #define THUNK_FUNCTION_CHECK(NODE) __extension__ \
664 ({ __typeof (NODE) const __t = (NODE); \
665 if (TREE_CODE (__t) != FUNCTION_DECL || !__t->decl_common.lang_specific \
666 || !__t->decl_common.lang_specific->u.fn.thunk_p) \
667 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, 0); \
668 __t; })
669
670 #else /* ENABLE_TREE_CHECKING */
671
672 #define TEMPLATE_INFO_DECL_CHECK(NODE) (NODE)
673 #define THUNK_FUNCTION_CHECK(NODE) (NODE)
674
675 #endif /* ENABLE_TREE_CHECKING */
676
677 /* Language-dependent contents of an identifier. */
678
679 struct GTY(()) lang_identifier {
680 struct c_common_identifier c_common;
681 cxx_binding *bindings;
682 };
683
684 /* Return a typed pointer version of T if it designates a
685 C++ front-end identifier. */
686 inline lang_identifier*
identifier_p(tree t)687 identifier_p (tree t)
688 {
689 if (TREE_CODE (t) == IDENTIFIER_NODE)
690 return (lang_identifier*) t;
691 return NULL;
692 }
693
694 #define LANG_IDENTIFIER_CAST(NODE) \
695 ((struct lang_identifier*)IDENTIFIER_NODE_CHECK (NODE))
696
697 struct GTY(()) template_parm_index {
698 struct tree_common common;
699 int index;
700 int level;
701 int orig_level;
702 tree decl;
703 };
704
705 struct GTY(()) ptrmem_cst {
706 struct tree_common common;
707 tree member;
708 location_t locus;
709 };
710 typedef struct ptrmem_cst * ptrmem_cst_t;
711
712 #define CLEANUP_P(NODE) TREE_LANG_FLAG_0 (TRY_BLOCK_CHECK (NODE))
713
714 #define BIND_EXPR_TRY_BLOCK(NODE) \
715 TREE_LANG_FLAG_0 (BIND_EXPR_CHECK (NODE))
716
717 /* This BIND_EXPR is from build_vec_delete_1. */
718 #define BIND_EXPR_VEC_DTOR(NODE) \
719 TREE_LANG_FLAG_1 (BIND_EXPR_CHECK (NODE))
720
721 /* Used to mark the block around the member initializers and cleanups. */
722 #define BIND_EXPR_BODY_BLOCK(NODE) \
723 TREE_LANG_FLAG_3 (BIND_EXPR_CHECK (NODE))
724 #define FUNCTION_NEEDS_BODY_BLOCK(NODE) \
725 (DECL_CONSTRUCTOR_P (NODE) || DECL_DESTRUCTOR_P (NODE) \
726 || LAMBDA_FUNCTION_P (NODE))
727
728 #define STATEMENT_LIST_NO_SCOPE(NODE) \
729 TREE_LANG_FLAG_0 (STATEMENT_LIST_CHECK (NODE))
730 #define STATEMENT_LIST_TRY_BLOCK(NODE) \
731 TREE_LANG_FLAG_2 (STATEMENT_LIST_CHECK (NODE))
732
733 /* Mark the outer curly brace BLOCK. */
734 #define BLOCK_OUTER_CURLY_BRACE_P(NODE) TREE_LANG_FLAG_0 (BLOCK_CHECK (NODE))
735
736 /* Nonzero if this statement should be considered a full-expression,
737 i.e., if temporaries created during this statement should have
738 their destructors run at the end of this statement. */
739 #define STMT_IS_FULL_EXPR_P(NODE) TREE_LANG_FLAG_1 ((NODE))
740
741 /* Marks the result of a statement expression. */
742 #define EXPR_STMT_STMT_EXPR_RESULT(NODE) \
743 TREE_LANG_FLAG_0 (EXPR_STMT_CHECK (NODE))
744
745 /* Nonzero if this statement-expression does not have an associated scope. */
746 #define STMT_EXPR_NO_SCOPE(NODE) \
747 TREE_LANG_FLAG_0 (STMT_EXPR_CHECK (NODE))
748
749 #define COND_EXPR_IS_VEC_DELETE(NODE) \
750 TREE_LANG_FLAG_0 (COND_EXPR_CHECK (NODE))
751
752 /* Nonzero if this NOP_EXPR is a reinterpret_cast. Such conversions
753 are not constexprs. Other NOP_EXPRs are. */
754 #define REINTERPRET_CAST_P(NODE) \
755 TREE_LANG_FLAG_0 (NOP_EXPR_CHECK (NODE))
756
757 /* Returns nonzero iff TYPE1 and TYPE2 are the same type, in the usual
758 sense of `same'. */
759 #define same_type_p(TYPE1, TYPE2) \
760 comptypes ((TYPE1), (TYPE2), COMPARE_STRICT)
761
762 /* Returns nonzero iff NODE is a declaration for the global function
763 `main'. */
764 #define DECL_MAIN_P(NODE) \
765 (DECL_EXTERN_C_FUNCTION_P (NODE) \
766 && DECL_NAME (NODE) != NULL_TREE \
767 && MAIN_NAME_P (DECL_NAME (NODE)) \
768 && flag_hosted)
769
770 /* Lookup walker marking. */
771 #define LOOKUP_SEEN_P(NODE) TREE_VISITED (NODE)
772 #define LOOKUP_FOUND_P(NODE) \
773 TREE_LANG_FLAG_4 (TREE_CHECK4 (NODE,RECORD_TYPE,UNION_TYPE,ENUMERAL_TYPE,\
774 NAMESPACE_DECL))
775
776 /* These two accessors should only be used by OVL manipulators.
777 Other users should use iterators and convenience functions. */
778 #define OVL_FUNCTION(NODE) \
779 (((struct tree_overload*)OVERLOAD_CHECK (NODE))->function)
780 #define OVL_CHAIN(NODE) \
781 (((struct tree_overload*)OVERLOAD_CHECK (NODE))->common.chain)
782
783 /* If set, this or a subsequent overload contains decls that need deduping. */
784 #define OVL_DEDUP_P(NODE) TREE_LANG_FLAG_0 (OVERLOAD_CHECK (NODE))
785 /* If set, this was imported in a using declaration. */
786 #define OVL_USING_P(NODE) TREE_LANG_FLAG_1 (OVERLOAD_CHECK (NODE))
787 /* If set, this overload is a hidden decl. */
788 #define OVL_HIDDEN_P(NODE) TREE_LANG_FLAG_2 (OVERLOAD_CHECK (NODE))
789 /* If set, this overload contains a nested overload. */
790 #define OVL_NESTED_P(NODE) TREE_LANG_FLAG_3 (OVERLOAD_CHECK (NODE))
791 /* If set, this overload was constructed during lookup. */
792 #define OVL_LOOKUP_P(NODE) TREE_LANG_FLAG_4 (OVERLOAD_CHECK (NODE))
793 /* If set, this OVL_USING_P overload is exported. */
794 #define OVL_EXPORT_P(NODE) TREE_LANG_FLAG_5 (OVERLOAD_CHECK (NODE))
795
796 /* The first decl of an overload. */
797 #define OVL_FIRST(NODE) ovl_first (NODE)
798 /* The name of the overload set. */
799 #define OVL_NAME(NODE) DECL_NAME (OVL_FIRST (NODE))
800
801 /* Whether this is a set of overloaded functions. TEMPLATE_DECLS are
802 always wrapped in an OVERLOAD, so we don't need to check them
803 here. */
804 #define OVL_P(NODE) \
805 (TREE_CODE (NODE) == FUNCTION_DECL || TREE_CODE (NODE) == OVERLOAD)
806 /* Whether this is a single member overload. */
807 #define OVL_SINGLE_P(NODE) \
808 (TREE_CODE (NODE) != OVERLOAD || !OVL_CHAIN (NODE))
809
810 /* OVL_HIDDEN_P nodes come before other nodes. */
811
812 struct GTY(()) tree_overload {
813 struct tree_common common;
814 tree function;
815 };
816
817 /* Iterator for a 1 dimensional overload. Permits iterating over the
818 outer level of a 2-d overload when explicitly enabled. */
819
820 class ovl_iterator {
821 tree ovl;
822 const bool allow_inner; /* Only used when checking. */
823
824 public:
825 explicit ovl_iterator (tree o, bool allow = false)
ovl(o)826 : ovl (o), allow_inner (allow)
827 {
828 }
829
830 public:
831 operator bool () const
832 {
833 return ovl;
834 }
835 ovl_iterator &operator++ ()
836 {
837 ovl = TREE_CODE (ovl) != OVERLOAD ? NULL_TREE : OVL_CHAIN (ovl);
838 return *this;
839 }
840 tree operator* () const
841 {
842 tree fn = TREE_CODE (ovl) != OVERLOAD ? ovl : OVL_FUNCTION (ovl);
843
844 /* Check this is not an unexpected 2-dimensional overload. */
845 gcc_checking_assert (allow_inner || TREE_CODE (fn) != OVERLOAD);
846
847 return fn;
848 }
849 bool operator== (const ovl_iterator &o) const
850 {
851 return ovl == o.ovl;
852 }
get_using()853 tree get_using () const
854 {
855 gcc_checking_assert (using_p ());
856 return ovl;
857 }
858
859 public:
860 /* Whether this overload was introduced by a using decl. */
using_p()861 bool using_p () const
862 {
863 return (TREE_CODE (ovl) == USING_DECL
864 || (TREE_CODE (ovl) == OVERLOAD && OVL_USING_P (ovl)));
865 }
866 /* Whether this using is being exported. */
exporting_p()867 bool exporting_p () const
868 {
869 return OVL_EXPORT_P (get_using ());
870 }
871
hidden_p()872 bool hidden_p () const
873 {
874 return TREE_CODE (ovl) == OVERLOAD && OVL_HIDDEN_P (ovl);
875 }
876
877 public:
remove_node(tree head)878 tree remove_node (tree head)
879 {
880 return remove_node (head, ovl);
881 }
reveal_node(tree head)882 tree reveal_node (tree head)
883 {
884 return reveal_node (head, ovl);
885 }
886
887 protected:
888 /* If we have a nested overload, point at the inner overload and
889 return the next link on the outer one. */
maybe_push()890 tree maybe_push ()
891 {
892 tree r = NULL_TREE;
893
894 if (ovl && TREE_CODE (ovl) == OVERLOAD && OVL_NESTED_P (ovl))
895 {
896 r = OVL_CHAIN (ovl);
897 ovl = OVL_FUNCTION (ovl);
898 }
899 return r;
900 }
901 /* Restore an outer nested overload. */
pop(tree outer)902 void pop (tree outer)
903 {
904 gcc_checking_assert (!ovl);
905 ovl = outer;
906 }
907
908 private:
909 /* We make these static functions to avoid the address of the
910 iterator escaping the local context. */
911 static tree remove_node (tree head, tree node);
912 static tree reveal_node (tree ovl, tree node);
913 };
914
915 /* Treat a tree as a range of ovl_iterator, e.g.
916 for (tree f : ovl_range (fns)) { ... } */
917
918 class ovl_range
919 {
920 tree t;
921 bool allow;
922 public:
t(t)923 explicit ovl_range (tree t, bool allow = false): t(t), allow(allow) { }
begin()924 ovl_iterator begin() { return ovl_iterator (t, allow); }
end()925 ovl_iterator end() { return ovl_iterator (NULL_TREE, allow); }
926 };
927
928 /* Iterator over a (potentially) 2 dimensional overload, which is
929 produced by name lookup. */
930
931 class lkp_iterator : public ovl_iterator {
932 typedef ovl_iterator parent;
933
934 tree outer;
935
936 public:
lkp_iterator(tree o)937 explicit lkp_iterator (tree o)
938 : parent (o, true), outer (maybe_push ())
939 {
940 }
941
942 public:
943 lkp_iterator &operator++ ()
944 {
945 bool repush = !outer;
946
947 if (!parent::operator++ () && !repush)
948 {
949 pop (outer);
950 repush = true;
951 }
952
953 if (repush)
954 outer = maybe_push ();
955
956 return *this;
957 }
958 };
959
960 /* Treat a tree as a range of lkp_iterator, e.g.
961 for (tree f : lkp_range (fns)) { ... } */
962
963 class lkp_range
964 {
965 tree t;
966 public:
lkp_range(tree t)967 lkp_range (tree t): t(t) { }
begin()968 lkp_iterator begin() { return lkp_iterator (t); }
end()969 lkp_iterator end() { return lkp_iterator (NULL_TREE); }
970 };
971
972 /* hash traits for declarations. Hashes potential overload sets via
973 DECL_NAME. */
974
975 struct named_decl_hash : ggc_remove <tree> {
976 typedef tree value_type; /* A DECL or OVERLOAD */
977 typedef tree compare_type; /* An identifier. */
978
979 inline static hashval_t hash (const value_type decl);
980 inline static bool equal (const value_type existing, compare_type candidate);
981
982 static const bool empty_zero_p = true;
mark_emptynamed_decl_hash983 static inline void mark_empty (value_type &p) {p = NULL_TREE;}
is_emptynamed_decl_hash984 static inline bool is_empty (value_type p) {return !p;}
985
986 /* Nothing is deletable. Everything is insertable. */
is_deletednamed_decl_hash987 static bool is_deleted (value_type) { return false; }
mark_deletednamed_decl_hash988 static void mark_deleted (value_type) { gcc_unreachable (); }
989 };
990
991 /* Simplified unique_ptr clone to release a tree vec on exit. */
992
993 class releasing_vec
994 {
995 public:
996 typedef vec<tree, va_gc> vec_t;
997
releasing_vec(vec_t * v)998 releasing_vec (vec_t *v): v(v) { }
releasing_vec()999 releasing_vec (): v(make_tree_vector ()) { }
1000
1001 /* Copy ops are deliberately declared but not defined,
1002 copies must always be elided. */
1003 releasing_vec (const releasing_vec &);
1004 releasing_vec &operator= (const releasing_vec &);
1005
1006 vec_t &operator* () const { return *v; }
1007 vec_t *operator-> () const { return v; }
get()1008 vec_t *get() const { return v; }
1009 operator vec_t *() const { return v; }
1010 vec_t ** operator& () { return &v; }
1011
1012 /* Breaks pointer/value consistency for convenience. This takes ptrdiff_t
1013 rather than unsigned to avoid ambiguity with the built-in operator[]
1014 (bootstrap/91828). */
1015 tree& operator[] (ptrdiff_t i) const { return (*v)[i]; }
1016
begin()1017 tree *begin() { return ::begin (v); }
end()1018 tree *end() { return ::end (v); }
1019
release()1020 void release () { release_tree_vector (v); v = NULL; }
1021
~releasing_vec()1022 ~releasing_vec () { release_tree_vector (v); }
1023 private:
1024 vec_t *v;
1025 };
1026 /* Forwarding functions for vec_safe_* that might reallocate. */
vec_safe_push(releasing_vec & r,const tree & t CXX_MEM_STAT_INFO)1027 inline tree* vec_safe_push (releasing_vec& r, const tree &t CXX_MEM_STAT_INFO)
1028 { return vec_safe_push (*&r, t PASS_MEM_STAT); }
1029 inline bool vec_safe_reserve (releasing_vec& r, unsigned n, bool e = false CXX_MEM_STAT_INFO)
1030 { return vec_safe_reserve (*&r, n, e PASS_MEM_STAT); }
vec_safe_length(releasing_vec & r)1031 inline unsigned vec_safe_length (releasing_vec &r)
1032 { return r->length(); }
vec_safe_splice(releasing_vec & r,vec<tree,va_gc> * p CXX_MEM_STAT_INFO)1033 inline void vec_safe_splice (releasing_vec &r, vec<tree, va_gc> *p CXX_MEM_STAT_INFO)
1034 { vec_safe_splice (*&r, p PASS_MEM_STAT); }
1035 void release_tree_vector (releasing_vec &); // cause link error
1036
1037 struct GTY(()) tree_template_decl {
1038 struct tree_decl_common common;
1039 tree arguments;
1040 tree result;
1041 };
1042
1043 /* Returns true iff NODE is a BASELINK. */
1044 #define BASELINK_P(NODE) \
1045 (TREE_CODE (NODE) == BASELINK)
1046 /* The BINFO indicating the base in which lookup found the
1047 BASELINK_FUNCTIONS. */
1048 #define BASELINK_BINFO(NODE) \
1049 (((struct tree_baselink*) BASELINK_CHECK (NODE))->binfo)
1050 /* The functions referred to by the BASELINK; either a FUNCTION_DECL,
1051 a TEMPLATE_DECL, an OVERLOAD, or a TEMPLATE_ID_EXPR. */
1052 #define BASELINK_FUNCTIONS(NODE) \
1053 (((struct tree_baselink*) BASELINK_CHECK (NODE))->functions)
1054 /* If T is a BASELINK, grab the functions, otherwise just T, which is
1055 expected to already be a (list of) functions. */
1056 #define MAYBE_BASELINK_FUNCTIONS(T) \
1057 (BASELINK_P (T) ? BASELINK_FUNCTIONS (T) : T)
1058 /* The BINFO in which the search for the functions indicated by this baselink
1059 began. This base is used to determine the accessibility of functions
1060 selected by overload resolution. */
1061 #define BASELINK_ACCESS_BINFO(NODE) \
1062 (((struct tree_baselink*) BASELINK_CHECK (NODE))->access_binfo)
1063 /* For a type-conversion operator, the BASELINK_OPTYPE indicates the type
1064 to which the conversion should occur. This value is important if
1065 the BASELINK_FUNCTIONS include a template conversion operator --
1066 the BASELINK_OPTYPE can be used to determine what type the user
1067 requested. */
1068 #define BASELINK_OPTYPE(NODE) \
1069 (TREE_CHAIN (BASELINK_CHECK (NODE)))
1070 /* Nonzero if this baselink was from a qualified lookup. */
1071 #define BASELINK_QUALIFIED_P(NODE) \
1072 TREE_LANG_FLAG_0 (BASELINK_CHECK (NODE))
1073 /* Nonzero if the overload set for this baselink might be incomplete due
1074 to the lookup being performed from an incomplete-class context. */
1075 #define BASELINK_FUNCTIONS_MAYBE_INCOMPLETE_P(NODE) \
1076 TREE_LANG_FLAG_1 (BASELINK_CHECK (NODE))
1077
1078 struct GTY(()) tree_baselink {
1079 struct tree_common common;
1080 tree binfo;
1081 tree functions;
1082 tree access_binfo;
1083 };
1084
1085 /* The different kinds of ids that we encounter. */
1086
1087 enum cp_id_kind
1088 {
1089 /* Not an id at all. */
1090 CP_ID_KIND_NONE,
1091 /* An unqualified-id that is not a template-id. */
1092 CP_ID_KIND_UNQUALIFIED,
1093 /* An unqualified-id that is a dependent name. */
1094 CP_ID_KIND_UNQUALIFIED_DEPENDENT,
1095 /* An unqualified template-id. */
1096 CP_ID_KIND_TEMPLATE_ID,
1097 /* A qualified-id. */
1098 CP_ID_KIND_QUALIFIED
1099 };
1100
1101
1102 /* The various kinds of C++0x warnings we encounter. */
1103
1104 enum cpp0x_warn_str
1105 {
1106 /* extended initializer lists */
1107 CPP0X_INITIALIZER_LISTS,
1108 /* explicit conversion operators */
1109 CPP0X_EXPLICIT_CONVERSION,
1110 /* variadic templates */
1111 CPP0X_VARIADIC_TEMPLATES,
1112 /* lambda expressions */
1113 CPP0X_LAMBDA_EXPR,
1114 /* C++0x auto */
1115 CPP0X_AUTO,
1116 /* scoped enums */
1117 CPP0X_SCOPED_ENUMS,
1118 /* defaulted and deleted functions */
1119 CPP0X_DEFAULTED_DELETED,
1120 /* inline namespaces */
1121 CPP0X_INLINE_NAMESPACES,
1122 /* override controls, override/final */
1123 CPP0X_OVERRIDE_CONTROLS,
1124 /* non-static data member initializers */
1125 CPP0X_NSDMI,
1126 /* user defined literals */
1127 CPP0X_USER_DEFINED_LITERALS,
1128 /* delegating constructors */
1129 CPP0X_DELEGATING_CTORS,
1130 /* inheriting constructors */
1131 CPP0X_INHERITING_CTORS,
1132 /* C++11 attributes */
1133 CPP0X_ATTRIBUTES,
1134 /* ref-qualified member functions */
1135 CPP0X_REF_QUALIFIER
1136 };
1137
1138 /* The various kinds of operation used by composite_pointer_type. */
1139
1140 enum composite_pointer_operation
1141 {
1142 /* comparison */
1143 CPO_COMPARISON,
1144 /* conversion */
1145 CPO_CONVERSION,
1146 /* conditional expression */
1147 CPO_CONDITIONAL_EXPR
1148 };
1149
1150 /* Possible cases of expression list used by build_x_compound_expr_from_list. */
1151 enum expr_list_kind {
1152 ELK_INIT, /* initializer */
1153 ELK_MEM_INIT, /* member initializer */
1154 ELK_FUNC_CAST /* functional cast */
1155 };
1156
1157 /* Possible cases of implicit bad rhs conversions. */
1158 enum impl_conv_rhs {
1159 ICR_DEFAULT_ARGUMENT, /* default argument */
1160 ICR_CONVERTING, /* converting */
1161 ICR_INIT, /* initialization */
1162 ICR_ARGPASS, /* argument passing */
1163 ICR_RETURN, /* return */
1164 ICR_ASSIGN /* assignment */
1165 };
1166
1167 /* Possible cases of implicit or explicit bad conversions to void. */
1168 enum impl_conv_void {
1169 ICV_CAST, /* (explicit) conversion to void */
1170 ICV_SECOND_OF_COND, /* second operand of conditional expression */
1171 ICV_THIRD_OF_COND, /* third operand of conditional expression */
1172 ICV_RIGHT_OF_COMMA, /* right operand of comma operator */
1173 ICV_LEFT_OF_COMMA, /* left operand of comma operator */
1174 ICV_STATEMENT, /* statement */
1175 ICV_THIRD_IN_FOR /* for increment expression */
1176 };
1177
1178 /* Possible invalid uses of an abstract class that might not have a
1179 specific associated declaration. */
1180 enum GTY(()) abstract_class_use {
1181 ACU_UNKNOWN, /* unknown or decl provided */
1182 ACU_CAST, /* cast to abstract class */
1183 ACU_NEW, /* new-expression of abstract class */
1184 ACU_THROW, /* throw-expression of abstract class */
1185 ACU_CATCH, /* catch-parameter of abstract class */
1186 ACU_ARRAY, /* array of abstract class */
1187 ACU_RETURN, /* return type of abstract class */
1188 ACU_PARM /* parameter type of abstract class */
1189 };
1190
1191 /* Macros for access to language-specific slots in an identifier. */
1192
1193 /* Identifiers map directly to block or class-scope bindings.
1194 Namespace-scope bindings are held in hash tables on the respective
1195 namespaces. The identifier bindings are the innermost active
1196 binding, from whence you can get the decl and/or implicit-typedef
1197 of an elaborated type. When not bound to a local entity the
1198 values are NULL. */
1199 #define IDENTIFIER_BINDING(NODE) \
1200 (LANG_IDENTIFIER_CAST (NODE)->bindings)
1201 #define REAL_IDENTIFIER_TYPE_VALUE(NODE) TREE_TYPE (NODE)
1202 #define SET_IDENTIFIER_TYPE_VALUE(NODE,TYPE) (TREE_TYPE (NODE) = (TYPE))
1203
1204 /* Kinds of identifiers. Values are carefully chosen. */
1205 enum cp_identifier_kind {
1206 cik_normal = 0, /* Not a special identifier. */
1207 cik_keyword = 1, /* A keyword. */
1208 cik_ctor = 2, /* Constructor (in-chg, complete or base). */
1209 cik_dtor = 3, /* Destructor (in-chg, deleting, complete or
1210 base). */
1211 cik_simple_op = 4, /* Non-assignment operator name. */
1212 cik_assign_op = 5, /* An assignment operator name. */
1213 cik_conv_op = 6, /* Conversion operator name. */
1214 cik_reserved_for_udlit = 7, /* Not yet in use */
1215 cik_max
1216 };
1217
1218 /* Kind bits. */
1219 #define IDENTIFIER_KIND_BIT_0(NODE) \
1220 TREE_LANG_FLAG_0 (IDENTIFIER_NODE_CHECK (NODE))
1221 #define IDENTIFIER_KIND_BIT_1(NODE) \
1222 TREE_LANG_FLAG_1 (IDENTIFIER_NODE_CHECK (NODE))
1223 #define IDENTIFIER_KIND_BIT_2(NODE) \
1224 TREE_LANG_FLAG_2 (IDENTIFIER_NODE_CHECK (NODE))
1225
1226 /* Used by various search routines. */
1227 #define IDENTIFIER_MARKED(NODE) \
1228 TREE_LANG_FLAG_4 (IDENTIFIER_NODE_CHECK (NODE))
1229
1230 /* Nonzero if this identifier is used as a virtual function name somewhere
1231 (optimizes searches). */
1232 #define IDENTIFIER_VIRTUAL_P(NODE) \
1233 TREE_LANG_FLAG_5 (IDENTIFIER_NODE_CHECK (NODE))
1234
1235 /* True if this identifier is a reserved word. C_RID_CODE (node) is
1236 then the RID_* value of the keyword. Value 1. */
1237 #define IDENTIFIER_KEYWORD_P(NODE) \
1238 ((!IDENTIFIER_KIND_BIT_2 (NODE)) \
1239 & (!IDENTIFIER_KIND_BIT_1 (NODE)) \
1240 & IDENTIFIER_KIND_BIT_0 (NODE))
1241
1242 /* True if this identifier is the name of a constructor or
1243 destructor. Value 2 or 3. */
1244 #define IDENTIFIER_CDTOR_P(NODE) \
1245 ((!IDENTIFIER_KIND_BIT_2 (NODE)) \
1246 & IDENTIFIER_KIND_BIT_1 (NODE))
1247
1248 /* True if this identifier is the name of a constructor. Value 2. */
1249 #define IDENTIFIER_CTOR_P(NODE) \
1250 (IDENTIFIER_CDTOR_P(NODE) \
1251 & (!IDENTIFIER_KIND_BIT_0 (NODE)))
1252
1253 /* True if this identifier is the name of a destructor. Value 3. */
1254 #define IDENTIFIER_DTOR_P(NODE) \
1255 (IDENTIFIER_CDTOR_P(NODE) \
1256 & IDENTIFIER_KIND_BIT_0 (NODE))
1257
1258 /* True if this identifier is for any operator name (including
1259 conversions). Value 4, 5, 6 or 7. */
1260 #define IDENTIFIER_ANY_OP_P(NODE) \
1261 (IDENTIFIER_KIND_BIT_2 (NODE))
1262
1263 /* True if this identifier is for an overloaded operator. Values 4, 5. */
1264 #define IDENTIFIER_OVL_OP_P(NODE) \
1265 (IDENTIFIER_ANY_OP_P (NODE) \
1266 & (!IDENTIFIER_KIND_BIT_1 (NODE)))
1267
1268 /* True if this identifier is for any assignment. Values 5. */
1269 #define IDENTIFIER_ASSIGN_OP_P(NODE) \
1270 (IDENTIFIER_OVL_OP_P (NODE) \
1271 & IDENTIFIER_KIND_BIT_0 (NODE))
1272
1273 /* True if this identifier is the name of a type-conversion
1274 operator. Value 7. */
1275 #define IDENTIFIER_CONV_OP_P(NODE) \
1276 (IDENTIFIER_ANY_OP_P (NODE) \
1277 & IDENTIFIER_KIND_BIT_1 (NODE) \
1278 & (!IDENTIFIER_KIND_BIT_0 (NODE)))
1279
1280 /* True if this identifier is a new or delete operator. */
1281 #define IDENTIFIER_NEWDEL_OP_P(NODE) \
1282 (IDENTIFIER_OVL_OP_P (NODE) \
1283 && IDENTIFIER_OVL_OP_FLAGS (NODE) & OVL_OP_FLAG_ALLOC)
1284
1285 /* True if this identifier is a new operator. */
1286 #define IDENTIFIER_NEW_OP_P(NODE) \
1287 (IDENTIFIER_OVL_OP_P (NODE) \
1288 && (IDENTIFIER_OVL_OP_FLAGS (NODE) \
1289 & (OVL_OP_FLAG_ALLOC | OVL_OP_FLAG_DELETE)) == OVL_OP_FLAG_ALLOC)
1290
1291 /* Access a C++-specific index for identifier NODE.
1292 Used to optimize operator mappings etc. */
1293 #define IDENTIFIER_CP_INDEX(NODE) \
1294 (IDENTIFIER_NODE_CHECK(NODE)->base.u.bits.address_space)
1295
1296 /* In a RECORD_TYPE or UNION_TYPE, nonzero if any component is read-only. */
1297 #define C_TYPE_FIELDS_READONLY(TYPE) \
1298 (LANG_TYPE_CLASS_CHECK (TYPE)->fields_readonly)
1299
1300 /* The tokens stored in the unparsed operand. */
1301
1302 #define DEFPARSE_TOKENS(NODE) \
1303 (((struct tree_deferred_parse *)DEFERRED_PARSE_CHECK (NODE))->tokens)
1304 #define DEFPARSE_INSTANTIATIONS(NODE) \
1305 (((struct tree_deferred_parse *)DEFERRED_PARSE_CHECK (NODE))->instantiations)
1306
1307 struct GTY (()) tree_deferred_parse {
1308 struct tree_base base;
1309 struct cp_token_cache *tokens;
1310 vec<tree, va_gc> *instantiations;
1311 };
1312
1313
1314 #define DEFERRED_NOEXCEPT_PATTERN(NODE) \
1315 (((struct tree_deferred_noexcept *)DEFERRED_NOEXCEPT_CHECK (NODE))->pattern)
1316 #define DEFERRED_NOEXCEPT_ARGS(NODE) \
1317 (((struct tree_deferred_noexcept *)DEFERRED_NOEXCEPT_CHECK (NODE))->args)
1318 #define DEFERRED_NOEXCEPT_SPEC_P(NODE) \
1319 ((NODE) && (TREE_PURPOSE (NODE)) \
1320 && (TREE_CODE (TREE_PURPOSE (NODE)) == DEFERRED_NOEXCEPT))
1321 #define UNEVALUATED_NOEXCEPT_SPEC_P(NODE) \
1322 (DEFERRED_NOEXCEPT_SPEC_P (NODE) \
1323 && DEFERRED_NOEXCEPT_PATTERN (TREE_PURPOSE (NODE)) == NULL_TREE)
1324 #define UNPARSED_NOEXCEPT_SPEC_P(NODE) \
1325 ((NODE) && (TREE_PURPOSE (NODE)) \
1326 && (TREE_CODE (TREE_PURPOSE (NODE)) == DEFERRED_PARSE))
1327
1328 struct GTY (()) tree_deferred_noexcept {
1329 struct tree_base base;
1330 tree pattern;
1331 tree args;
1332 };
1333
1334
1335 /* The condition associated with the static assertion. This must be
1336 an integral constant expression. */
1337 #define STATIC_ASSERT_CONDITION(NODE) \
1338 (((struct tree_static_assert *)STATIC_ASSERT_CHECK (NODE))->condition)
1339
1340 /* The message associated with the static assertion. This must be a
1341 string constant, which will be emitted as an error message when the
1342 static assert condition is false. */
1343 #define STATIC_ASSERT_MESSAGE(NODE) \
1344 (((struct tree_static_assert *)STATIC_ASSERT_CHECK (NODE))->message)
1345
1346 /* Source location information for a static assertion. */
1347 #define STATIC_ASSERT_SOURCE_LOCATION(NODE) \
1348 (((struct tree_static_assert *)STATIC_ASSERT_CHECK (NODE))->location)
1349
1350 struct GTY (()) tree_static_assert {
1351 struct tree_common common;
1352 tree condition;
1353 tree message;
1354 location_t location;
1355 };
1356
1357 struct GTY (()) tree_argument_pack_select {
1358 struct tree_common common;
1359 tree argument_pack;
1360 int index;
1361 };
1362
1363 /* The different kinds of traits that we encounter. */
1364
1365 enum cp_trait_kind
1366 {
1367 CPTK_BASES,
1368 CPTK_DIRECT_BASES,
1369 CPTK_HAS_NOTHROW_ASSIGN,
1370 CPTK_HAS_NOTHROW_CONSTRUCTOR,
1371 CPTK_HAS_NOTHROW_COPY,
1372 CPTK_HAS_TRIVIAL_ASSIGN,
1373 CPTK_HAS_TRIVIAL_CONSTRUCTOR,
1374 CPTK_HAS_TRIVIAL_COPY,
1375 CPTK_HAS_TRIVIAL_DESTRUCTOR,
1376 CPTK_HAS_UNIQUE_OBJ_REPRESENTATIONS,
1377 CPTK_HAS_VIRTUAL_DESTRUCTOR,
1378 CPTK_IS_ABSTRACT,
1379 CPTK_IS_AGGREGATE,
1380 CPTK_IS_BASE_OF,
1381 CPTK_IS_CLASS,
1382 CPTK_IS_EMPTY,
1383 CPTK_IS_ENUM,
1384 CPTK_IS_FINAL,
1385 CPTK_IS_LAYOUT_COMPATIBLE,
1386 CPTK_IS_LITERAL_TYPE,
1387 CPTK_IS_POINTER_INTERCONVERTIBLE_BASE_OF,
1388 CPTK_IS_POD,
1389 CPTK_IS_POLYMORPHIC,
1390 CPTK_IS_SAME_AS,
1391 CPTK_IS_STD_LAYOUT,
1392 CPTK_IS_TRIVIAL,
1393 CPTK_IS_TRIVIALLY_ASSIGNABLE,
1394 CPTK_IS_TRIVIALLY_CONSTRUCTIBLE,
1395 CPTK_IS_TRIVIALLY_COPYABLE,
1396 CPTK_IS_UNION,
1397 CPTK_UNDERLYING_TYPE,
1398 CPTK_IS_ASSIGNABLE,
1399 CPTK_IS_CONSTRUCTIBLE,
1400 CPTK_IS_NOTHROW_ASSIGNABLE,
1401 CPTK_IS_NOTHROW_CONSTRUCTIBLE
1402 };
1403
1404 /* The types that we are processing. */
1405 #define TRAIT_EXPR_TYPE1(NODE) \
1406 (((struct tree_trait_expr *)TRAIT_EXPR_CHECK (NODE))->type1)
1407
1408 #define TRAIT_EXPR_TYPE2(NODE) \
1409 (((struct tree_trait_expr *)TRAIT_EXPR_CHECK (NODE))->type2)
1410
1411 /* The specific trait that we are processing. */
1412 #define TRAIT_EXPR_KIND(NODE) \
1413 (((struct tree_trait_expr *)TRAIT_EXPR_CHECK (NODE))->kind)
1414
1415 #define TRAIT_EXPR_LOCATION(NODE) \
1416 (((struct tree_trait_expr *)TRAIT_EXPR_CHECK (NODE))->locus)
1417
1418 struct GTY (()) tree_trait_expr {
1419 struct tree_common common;
1420 tree type1;
1421 tree type2;
1422 location_t locus;
1423 enum cp_trait_kind kind;
1424 };
1425
1426 /* Identifiers used for lambda types are almost anonymous. Use this
1427 spare flag to distinguish them (they also have the anonymous flag). */
1428 #define IDENTIFIER_LAMBDA_P(NODE) \
1429 (IDENTIFIER_NODE_CHECK(NODE)->base.protected_flag)
1430
1431 /* Based off of TYPE_UNNAMED_P. */
1432 #define LAMBDA_TYPE_P(NODE) \
1433 (TREE_CODE (NODE) == RECORD_TYPE \
1434 && TYPE_LINKAGE_IDENTIFIER (NODE) \
1435 && IDENTIFIER_LAMBDA_P (TYPE_LINKAGE_IDENTIFIER (NODE)))
1436
1437 /* Test if FUNCTION_DECL is a lambda function. */
1438 #define LAMBDA_FUNCTION_P(FNDECL) \
1439 (DECL_DECLARES_FUNCTION_P (FNDECL) \
1440 && DECL_OVERLOADED_OPERATOR_P (FNDECL) \
1441 && DECL_OVERLOADED_OPERATOR_IS (FNDECL, CALL_EXPR) \
1442 && LAMBDA_TYPE_P (CP_DECL_CONTEXT (FNDECL)))
1443
1444 enum cp_lambda_default_capture_mode_type {
1445 CPLD_NONE,
1446 CPLD_COPY,
1447 CPLD_REFERENCE
1448 };
1449
1450 /* The method of default capture, if any. */
1451 #define LAMBDA_EXPR_DEFAULT_CAPTURE_MODE(NODE) \
1452 (((struct tree_lambda_expr *)LAMBDA_EXPR_CHECK (NODE))->default_capture_mode)
1453
1454 /* The capture-list, including `this'. Each capture is stored as a FIELD_DECL
1455 * so that the name, type, and field are all together, whether or not it has
1456 * been added to the lambda's class type.
1457 TREE_LIST:
1458 TREE_PURPOSE: The FIELD_DECL for this capture.
1459 TREE_VALUE: The initializer. This is part of a GNU extension. */
1460 #define LAMBDA_EXPR_CAPTURE_LIST(NODE) \
1461 (((struct tree_lambda_expr *)LAMBDA_EXPR_CHECK (NODE))->capture_list)
1462
1463 /* During parsing of the lambda-introducer, the node in the capture-list
1464 that holds the 'this' capture. During parsing of the body, the
1465 capture proxy for that node. */
1466 #define LAMBDA_EXPR_THIS_CAPTURE(NODE) \
1467 (((struct tree_lambda_expr *)LAMBDA_EXPR_CHECK (NODE))->this_capture)
1468
1469 /* Predicate tracking whether `this' is in the effective capture set. */
1470 #define LAMBDA_EXPR_CAPTURES_THIS_P(NODE) \
1471 LAMBDA_EXPR_THIS_CAPTURE(NODE)
1472
1473 /* Predicate tracking whether the lambda was declared 'mutable'. */
1474 #define LAMBDA_EXPR_MUTABLE_P(NODE) \
1475 TREE_LANG_FLAG_1 (LAMBDA_EXPR_CHECK (NODE))
1476
1477 /* True iff uses of a const variable capture were optimized away. */
1478 #define LAMBDA_EXPR_CAPTURE_OPTIMIZED(NODE) \
1479 TREE_LANG_FLAG_2 (LAMBDA_EXPR_CHECK (NODE))
1480
1481 /* True if this TREE_LIST in LAMBDA_EXPR_CAPTURE_LIST is for an explicit
1482 capture. */
1483 #define LAMBDA_CAPTURE_EXPLICIT_P(NODE) \
1484 TREE_LANG_FLAG_0 (TREE_LIST_CHECK (NODE))
1485
1486 /* The source location of the lambda. */
1487 #define LAMBDA_EXPR_LOCATION(NODE) \
1488 (((struct tree_lambda_expr *)LAMBDA_EXPR_CHECK (NODE))->locus)
1489
1490 /* The mangling scope for the lambda: FUNCTION_DECL, PARM_DECL, VAR_DECL,
1491 FIELD_DECL or NULL_TREE. If this is NULL_TREE, we have no linkage. */
1492 #define LAMBDA_EXPR_EXTRA_SCOPE(NODE) \
1493 (((struct tree_lambda_expr *)LAMBDA_EXPR_CHECK (NODE))->extra_scope)
1494
1495 /* If EXTRA_SCOPE, this is the number of the lambda within that scope. */
1496 #define LAMBDA_EXPR_DISCRIMINATOR(NODE) \
1497 (((struct tree_lambda_expr *)LAMBDA_EXPR_CHECK (NODE))->discriminator)
1498
1499 /* During parsing of the lambda, a vector of capture proxies which need
1500 to be pushed once we're done processing a nested lambda. */
1501 #define LAMBDA_EXPR_PENDING_PROXIES(NODE) \
1502 (((struct tree_lambda_expr *)LAMBDA_EXPR_CHECK (NODE))->pending_proxies)
1503
1504 /* If NODE was regenerated via tsubst_lambda_expr, this is a TEMPLATE_INFO
1505 whose TI_TEMPLATE is the immediate LAMBDA_EXPR from which NODE was
1506 regenerated, and TI_ARGS is the full set of template arguments used
1507 to regenerate NODE from the most general lambda. */
1508 #define LAMBDA_EXPR_REGEN_INFO(NODE) \
1509 (((struct tree_lambda_expr *)LAMBDA_EXPR_CHECK (NODE))->regen_info)
1510
1511 /* The closure type of the lambda, which is also the type of the
1512 LAMBDA_EXPR. */
1513 #define LAMBDA_EXPR_CLOSURE(NODE) \
1514 (TREE_TYPE (LAMBDA_EXPR_CHECK (NODE)))
1515
1516 struct GTY (()) tree_lambda_expr
1517 {
1518 struct tree_typed typed;
1519 tree capture_list;
1520 tree this_capture;
1521 tree extra_scope;
1522 tree regen_info;
1523 vec<tree, va_gc> *pending_proxies;
1524 location_t locus;
1525 enum cp_lambda_default_capture_mode_type default_capture_mode : 8;
1526 short int discriminator;
1527 };
1528
1529 /* Non-zero if this template specialization has access violations that
1530 should be rechecked when the function is instantiated outside argument
1531 deduction. */
1532 #define TINFO_HAS_ACCESS_ERRORS(NODE) \
1533 (TREE_LANG_FLAG_0 (TEMPLATE_INFO_CHECK (NODE)))
1534 #define FNDECL_HAS_ACCESS_ERRORS(NODE) \
1535 (TINFO_HAS_ACCESS_ERRORS (DECL_TEMPLATE_INFO (NODE)))
1536
1537 /* Non-zero if this variable template specialization was specified using a
1538 template-id, so it's a partial or full specialization and not a definition
1539 of the member template of a particular class specialization. */
1540 #define TINFO_USED_TEMPLATE_ID(NODE) \
1541 (TREE_LANG_FLAG_1 (TEMPLATE_INFO_CHECK (NODE)))
1542
1543 /* The representation of a deferred access check. */
1544
1545 struct GTY(()) deferred_access_check {
1546 /* The base class in which the declaration is referenced. */
1547 tree binfo;
1548 /* The declaration whose access must be checked. */
1549 tree decl;
1550 /* The declaration that should be used in the error message. */
1551 tree diag_decl;
1552 /* The location of this access. */
1553 location_t loc;
1554 };
1555
1556 struct GTY(()) tree_template_info {
1557 struct tree_base base;
1558 tree tmpl;
1559 tree args;
1560 vec<deferred_access_check, va_gc> *deferred_access_checks;
1561 };
1562
1563 // Constraint information for a C++ declaration. Constraint information is
1564 // comprised of:
1565 //
1566 // - a constraint expression introduced by the template header
1567 // - a constraint expression introduced by a function declarator
1568 // - the associated constraints, which are the conjunction of those,
1569 // and used for declaration matching
1570 //
1571 // The template and declarator requirements are kept to support pretty
1572 // printing constrained declarations.
1573 struct GTY(()) tree_constraint_info {
1574 struct tree_base base;
1575 tree template_reqs;
1576 tree declarator_reqs;
1577 tree associated_constr;
1578 };
1579
1580 // Require that pointer P is non-null before returning.
1581 template<typename T>
1582 inline T*
check_nonnull(T * p)1583 check_nonnull (T* p)
1584 {
1585 gcc_assert (p);
1586 return p;
1587 }
1588
1589 /* Returns true iff T is non-null and represents constraint info. */
1590 inline tree_constraint_info *
check_constraint_info(tree t)1591 check_constraint_info (tree t)
1592 {
1593 if (t && TREE_CODE (t) == CONSTRAINT_INFO)
1594 return (tree_constraint_info *)t;
1595 return NULL;
1596 }
1597
1598 /* Access the expression describing the template constraints. This may be
1599 null if no constraints were introduced in the template parameter list,
1600 a requirements clause after the template parameter list, or constraints
1601 through a constrained-type-specifier. */
1602 #define CI_TEMPLATE_REQS(NODE) \
1603 check_constraint_info (check_nonnull (NODE))->template_reqs
1604
1605 /* Access the expression describing the trailing constraints. This is non-null
1606 for any implicit instantiation of a constrained declaration. For a
1607 templated declaration it is non-null only when a trailing requires-clause
1608 was specified. */
1609 #define CI_DECLARATOR_REQS(NODE) \
1610 check_constraint_info (check_nonnull (NODE))->declarator_reqs
1611
1612 /* The computed associated constraint expression for a declaration. */
1613 #define CI_ASSOCIATED_CONSTRAINTS(NODE) \
1614 check_constraint_info (check_nonnull (NODE))->associated_constr
1615
1616 /* Access the constraint-expression introduced by the requires-clause
1617 associate the template parameter list NODE. */
1618 #define TEMPLATE_PARMS_CONSTRAINTS(NODE) \
1619 TREE_TYPE (TREE_LIST_CHECK (NODE))
1620
1621 /* Access the logical constraints on the template parameter declaration
1622 indicated by NODE. */
1623 #define TEMPLATE_PARM_CONSTRAINTS(NODE) \
1624 TREE_TYPE (TREE_LIST_CHECK (NODE))
1625
1626 /* Non-zero if the noexcept is present in a compound requirement. */
1627 #define COMPOUND_REQ_NOEXCEPT_P(NODE) \
1628 TREE_LANG_FLAG_0 (TREE_CHECK (NODE, COMPOUND_REQ))
1629
1630 /* A TREE_LIST whose TREE_VALUE is the constraints on the 'auto' placeholder
1631 type NODE, used in an argument deduction constraint. The TREE_PURPOSE
1632 holds the set of template parameters that were in-scope when this 'auto'
1633 was formed. */
1634 #define PLACEHOLDER_TYPE_CONSTRAINTS_INFO(NODE) \
1635 DECL_SIZE_UNIT (TYPE_NAME (NODE))
1636
1637 /* The constraints on the 'auto' placeholder type NODE. */
1638 #define PLACEHOLDER_TYPE_CONSTRAINTS(NODE) \
1639 (PLACEHOLDER_TYPE_CONSTRAINTS_INFO (NODE) \
1640 ? TREE_VALUE (PLACEHOLDER_TYPE_CONSTRAINTS_INFO (NODE)) \
1641 : NULL_TREE)
1642
1643 /* True if NODE is a constraint. */
1644 #define CONSTR_P(NODE) \
1645 (TREE_CODE (NODE) == ATOMIC_CONSTR \
1646 || TREE_CODE (NODE) == CONJ_CONSTR \
1647 || TREE_CODE (NODE) == DISJ_CONSTR)
1648
1649 /* Valid for any normalized constraint. */
1650 #define CONSTR_CHECK(NODE) \
1651 TREE_CHECK3 (NODE, ATOMIC_CONSTR, CONJ_CONSTR, DISJ_CONSTR)
1652
1653 /* The CONSTR_INFO stores normalization data for a constraint. It refers to
1654 the original expression and the expression or declaration
1655 from which the constraint was normalized.
1656
1657 This is TREE_LIST whose TREE_PURPOSE is the original expression and whose
1658 TREE_VALUE is a list of contexts. */
1659 #define CONSTR_INFO(NODE) \
1660 TREE_TYPE (CONSTR_CHECK (NODE))
1661
1662 /* The expression evaluated by the constraint. */
1663 #define CONSTR_EXPR(NODE) \
1664 TREE_PURPOSE (CONSTR_INFO (NODE))
1665
1666 /* The expression or declaration from which this constraint was normalized.
1667 This is a TREE_LIST whose TREE_VALUE is either a template-id expression
1668 denoting a concept check or the declaration introducing the constraint.
1669 These are chained to other context objects. */
1670 #define CONSTR_CONTEXT(NODE) \
1671 TREE_VALUE (CONSTR_INFO (NODE))
1672
1673 /* The parameter mapping for an atomic constraint. */
1674 #define ATOMIC_CONSTR_MAP(NODE) \
1675 TREE_OPERAND (TREE_CHECK (NODE, ATOMIC_CONSTR), 0)
1676
1677 /* Whether the parameter mapping of this atomic constraint
1678 is already instantiated with concrete template arguments.
1679 Used only in satisfy_atom and in the satisfaction cache. */
1680 #define ATOMIC_CONSTR_MAP_INSTANTIATED_P(NODE) \
1681 TREE_LANG_FLAG_0 (ATOMIC_CONSTR_CHECK (NODE))
1682
1683 /* Whether the expression for this atomic constraint belongs to a
1684 concept definition. */
1685 #define ATOMIC_CONSTR_EXPR_FROM_CONCEPT_P(NODE) \
1686 TREE_LANG_FLAG_1 (ATOMIC_CONSTR_CHECK (NODE))
1687
1688 /* The expression of an atomic constraint. */
1689 #define ATOMIC_CONSTR_EXPR(NODE) \
1690 CONSTR_EXPR (ATOMIC_CONSTR_CHECK (NODE))
1691
1692 /* The concept of a concept check. */
1693 #define CHECK_CONSTR_CONCEPT(NODE) \
1694 TREE_OPERAND (TREE_CHECK (NODE, CHECK_CONSTR), 0)
1695
1696 /* The template arguments of a concept check. */
1697 #define CHECK_CONSTR_ARGS(NODE) \
1698 TREE_OPERAND (TREE_CHECK (NODE, CHECK_CONSTR), 1)
1699
1700 /* Whether a PARM_DECL represents a local parameter in a
1701 requires-expression. */
1702 #define CONSTRAINT_VAR_P(NODE) \
1703 DECL_LANG_FLAG_2 (TREE_CHECK (NODE, PARM_DECL))
1704
1705 /* The concept constraining this constrained template-parameter. */
1706 #define CONSTRAINED_PARM_CONCEPT(NODE) \
1707 DECL_SIZE_UNIT (TYPE_DECL_CHECK (NODE))
1708 /* Any extra template arguments specified for a constrained
1709 template-parameter. */
1710 #define CONSTRAINED_PARM_EXTRA_ARGS(NODE) \
1711 DECL_SIZE (TYPE_DECL_CHECK (NODE))
1712 /* The first template parameter of CONSTRAINED_PARM_CONCEPT to be used as a
1713 prototype for the constrained parameter in finish_shorthand_constraint,
1714 attached for convenience. */
1715 #define CONSTRAINED_PARM_PROTOTYPE(NODE) \
1716 DECL_INITIAL (TYPE_DECL_CHECK (NODE))
1717
1718 /* Module flags on FUNCTION,VAR,TYPE,CONCEPT or NAMESPACE
1719 A TEMPLATE_DECL holds them on the DECL_TEMPLATE_RESULT object --
1720 it's just not practical to keep them consistent. */
1721 #define DECL_MODULE_CHECK(NODE) \
1722 TREE_NOT_CHECK (NODE, TEMPLATE_DECL)
1723
1724 /* In the purview of a module (including header unit). */
1725 #define DECL_MODULE_PURVIEW_P(N) \
1726 (DECL_LANG_SPECIFIC (DECL_MODULE_CHECK (N))->u.base.module_purview_p)
1727
1728 /* True if the live version of the decl was imported. */
1729 #define DECL_MODULE_IMPORT_P(NODE) \
1730 (DECL_LANG_SPECIFIC (DECL_MODULE_CHECK (NODE))->u.base.module_import_p)
1731
1732 /* True if this decl is in the entity hash & array. This means that
1733 some variant was imported, even if DECL_MODULE_IMPORT_P is false. */
1734 #define DECL_MODULE_ENTITY_P(NODE) \
1735 (DECL_LANG_SPECIFIC (DECL_MODULE_CHECK (NODE))->u.base.module_entity_p)
1736
1737 /* DECL that has attached decls for ODR-relatedness. */
1738 #define DECL_MODULE_ATTACHMENTS_P(NODE) \
1739 (DECL_LANG_SPECIFIC (TREE_CHECK2(NODE,FUNCTION_DECL,VAR_DECL))\
1740 ->u.base.module_attached_p)
1741
1742 /* Whether this is an exported DECL. Held on any decl that can appear
1743 at namespace scope (function, var, type, template, const or
1744 namespace). templates copy from their template_result, consts have
1745 it for unscoped enums. */
1746 #define DECL_MODULE_EXPORT_P(NODE) TREE_LANG_FLAG_3 (NODE)
1747
1748
1749 /* The list of local parameters introduced by this requires-expression,
1750 in the form of a chain of PARM_DECLs. */
1751 #define REQUIRES_EXPR_PARMS(NODE) \
1752 TREE_OPERAND (TREE_CHECK (NODE, REQUIRES_EXPR), 0)
1753
1754 /* A TREE_LIST of the requirements for this requires-expression.
1755 The requirements are stored in lexical order within the TREE_VALUE
1756 of each TREE_LIST node. The TREE_PURPOSE of each node is unused. */
1757 #define REQUIRES_EXPR_REQS(NODE) \
1758 TREE_OPERAND (TREE_CHECK (NODE, REQUIRES_EXPR), 1)
1759
1760 /* Like PACK_EXPANSION_EXTRA_ARGS, for requires-expressions. */
1761 #define REQUIRES_EXPR_EXTRA_ARGS(NODE) \
1762 TREE_OPERAND (TREE_CHECK (NODE, REQUIRES_EXPR), 2)
1763
1764 enum cp_tree_node_structure_enum {
1765 TS_CP_GENERIC,
1766 TS_CP_IDENTIFIER,
1767 TS_CP_TPI,
1768 TS_CP_PTRMEM,
1769 TS_CP_OVERLOAD,
1770 TS_CP_BINDING_VECTOR,
1771 TS_CP_BASELINK,
1772 TS_CP_TEMPLATE_DECL,
1773 TS_CP_DEFERRED_PARSE,
1774 TS_CP_DEFERRED_NOEXCEPT,
1775 TS_CP_STATIC_ASSERT,
1776 TS_CP_ARGUMENT_PACK_SELECT,
1777 TS_CP_TRAIT_EXPR,
1778 TS_CP_LAMBDA_EXPR,
1779 TS_CP_TEMPLATE_INFO,
1780 TS_CP_CONSTRAINT_INFO,
1781 TS_CP_USERDEF_LITERAL
1782 };
1783
1784 /* The resulting tree type. */
1785 union GTY((desc ("cp_tree_node_structure (&%h)"),
1786 chain_next ("(union lang_tree_node *) c_tree_chain_next (&%h.generic)"))) lang_tree_node {
1787 union tree_node GTY ((tag ("TS_CP_GENERIC"),
1788 desc ("tree_node_structure (&%h)"))) generic;
1789 struct template_parm_index GTY ((tag ("TS_CP_TPI"))) tpi;
1790 struct ptrmem_cst GTY ((tag ("TS_CP_PTRMEM"))) ptrmem;
1791 struct tree_overload GTY ((tag ("TS_CP_OVERLOAD"))) overload;
1792 struct tree_binding_vec GTY ((tag ("TS_CP_BINDING_VECTOR"))) binding_vec;
1793 struct tree_baselink GTY ((tag ("TS_CP_BASELINK"))) baselink;
1794 struct tree_template_decl GTY ((tag ("TS_CP_TEMPLATE_DECL"))) template_decl;
1795 struct tree_deferred_parse GTY ((tag ("TS_CP_DEFERRED_PARSE"))) deferred_parse;
1796 struct tree_deferred_noexcept GTY ((tag ("TS_CP_DEFERRED_NOEXCEPT"))) deferred_noexcept;
1797 struct lang_identifier GTY ((tag ("TS_CP_IDENTIFIER"))) identifier;
1798 struct tree_static_assert GTY ((tag ("TS_CP_STATIC_ASSERT")))
1799 static_assertion;
1800 struct tree_argument_pack_select GTY ((tag ("TS_CP_ARGUMENT_PACK_SELECT")))
1801 argument_pack_select;
1802 struct tree_trait_expr GTY ((tag ("TS_CP_TRAIT_EXPR")))
1803 trait_expression;
1804 struct tree_lambda_expr GTY ((tag ("TS_CP_LAMBDA_EXPR")))
1805 lambda_expression;
1806 struct tree_template_info GTY ((tag ("TS_CP_TEMPLATE_INFO")))
1807 template_info;
1808 struct tree_constraint_info GTY ((tag ("TS_CP_CONSTRAINT_INFO")))
1809 constraint_info;
1810 struct tree_userdef_literal GTY ((tag ("TS_CP_USERDEF_LITERAL")))
1811 userdef_literal;
1812 };
1813
1814
1815 struct GTY(()) omp_declare_target_attr {
1816 bool attr_syntax;
1817 };
1818
1819 /* Global state. */
1820
1821 struct GTY(()) saved_scope {
1822 vec<cxx_saved_binding, va_gc> *old_bindings;
1823 tree old_namespace;
1824 vec<tree, va_gc> *decl_ns_list;
1825 tree class_name;
1826 tree class_type;
1827 tree access_specifier;
1828 tree function_decl;
1829 vec<tree, va_gc> *lang_base;
1830 tree lang_name;
1831 tree template_parms;
1832 cp_binding_level *x_previous_class_level;
1833 tree x_saved_tree;
1834
1835 /* Only used for uses of this in trailing return type. */
1836 tree x_current_class_ptr;
1837 tree x_current_class_ref;
1838
1839 int x_processing_template_decl;
1840 int x_processing_specialization;
1841 int x_processing_constraint;
1842 int suppress_location_wrappers;
1843 BOOL_BITFIELD x_processing_explicit_instantiation : 1;
1844 BOOL_BITFIELD need_pop_function_context : 1;
1845
1846 /* Nonzero if we are parsing the discarded statement of a constexpr
1847 if-statement. */
1848 BOOL_BITFIELD discarded_stmt : 1;
1849 /* Nonzero if we are parsing or instantiating the compound-statement
1850 of consteval if statement. Also set while processing an immediate
1851 invocation. */
1852 BOOL_BITFIELD consteval_if_p : 1;
1853
1854 int unevaluated_operand;
1855 int inhibit_evaluation_warnings;
1856 int noexcept_operand;
1857 int ref_temp_count;
1858
1859 struct stmt_tree_s x_stmt_tree;
1860
1861 cp_binding_level *class_bindings;
1862 cp_binding_level *bindings;
1863
1864 hash_map<tree, tree> *GTY((skip)) x_local_specializations;
1865 vec<omp_declare_target_attr, va_gc> *omp_declare_target_attribute;
1866
1867 struct saved_scope *prev;
1868 };
1869
1870 extern GTY(()) struct saved_scope *scope_chain;
1871
1872 /* The current open namespace. */
1873
1874 #define current_namespace scope_chain->old_namespace
1875
1876 /* The stack for namespaces of current declarations. */
1877
1878 #define decl_namespace_list scope_chain->decl_ns_list
1879
1880 /* IDENTIFIER_NODE: name of current class */
1881
1882 #define current_class_name scope_chain->class_name
1883
1884 /* _TYPE: the type of the current class */
1885
1886 #define current_class_type scope_chain->class_type
1887
1888 /* When parsing a class definition, the access specifier most recently
1889 given by the user, or, if no access specifier was given, the
1890 default value appropriate for the kind of class (i.e., struct,
1891 class, or union). */
1892
1893 #define current_access_specifier scope_chain->access_specifier
1894
1895 /* Pointer to the top of the language name stack. */
1896
1897 #define current_lang_base scope_chain->lang_base
1898 #define current_lang_name scope_chain->lang_name
1899
1900 /* When parsing a template declaration, a TREE_LIST represents the
1901 active template parameters. Each node in the list represents one
1902 level of template parameters. The innermost level is first in the
1903 list. The depth of each level is stored as an INTEGER_CST in the
1904 TREE_PURPOSE of each node. The parameters for that level are
1905 stored in the TREE_VALUE. */
1906
1907 #define current_template_parms scope_chain->template_parms
1908 #define current_template_depth \
1909 (current_template_parms ? TMPL_PARMS_DEPTH (current_template_parms) : 0)
1910
1911 #define processing_template_decl scope_chain->x_processing_template_decl
1912 #define processing_specialization scope_chain->x_processing_specialization
1913 #define processing_explicit_instantiation scope_chain->x_processing_explicit_instantiation
1914
1915 #define in_discarded_stmt scope_chain->discarded_stmt
1916 #define in_consteval_if_p scope_chain->consteval_if_p
1917
1918 #define current_ref_temp_count scope_chain->ref_temp_count
1919
1920 /* RAII sentinel to handle clearing processing_template_decl and restoring
1921 it when done. */
1922
1923 class processing_template_decl_sentinel
1924 {
1925 public:
1926 int saved;
1927 processing_template_decl_sentinel (bool reset = true)
saved(processing_template_decl)1928 : saved (processing_template_decl)
1929 {
1930 if (reset)
1931 processing_template_decl = 0;
1932 }
~processing_template_decl_sentinel()1933 ~processing_template_decl_sentinel()
1934 {
1935 processing_template_decl = saved;
1936 }
1937 };
1938
1939 /* RAII sentinel to disable certain warnings during template substitution
1940 and elsewhere. */
1941
1942 class warning_sentinel
1943 {
1944 public:
1945 int &flag;
1946 int val;
1947 warning_sentinel(int& flag, bool suppress=true)
flag(flag)1948 : flag(flag), val(flag) { if (suppress) flag = 0; }
~warning_sentinel()1949 ~warning_sentinel() { flag = val; }
1950 };
1951
1952 /* RAII sentinel to temporarily override input_location. This will not set
1953 input_location to UNKNOWN_LOCATION or BUILTINS_LOCATION. */
1954
1955 class iloc_sentinel
1956 {
1957 location_t saved_loc;
1958 public:
iloc_sentinel(location_t loc)1959 iloc_sentinel (location_t loc): saved_loc (input_location)
1960 {
1961 if (loc >= RESERVED_LOCATION_COUNT)
1962 input_location = loc;
1963 }
~iloc_sentinel()1964 ~iloc_sentinel ()
1965 {
1966 input_location = saved_loc;
1967 }
1968 };
1969
1970 /* RAII sentinel that saves the value of a variable, optionally
1971 overrides it right away, and restores its value when the sentinel
1972 id destructed. */
1973
1974 template <typename T>
1975 class temp_override
1976 {
1977 T& overridden_variable;
1978 T saved_value;
1979 public:
temp_override(T & var)1980 temp_override(T& var) : overridden_variable (var), saved_value (var) {}
temp_override(T & var,T overrider)1981 temp_override(T& var, T overrider)
1982 : overridden_variable (var), saved_value (var)
1983 {
1984 overridden_variable = overrider;
1985 }
~temp_override()1986 ~temp_override() { overridden_variable = saved_value; }
1987 };
1988
1989 /* Wrapping a template parameter in type_identity_t hides it from template
1990 argument deduction. */
1991 #if __cpp_lib_type_identity
1992 using std::type_identity_t;
1993 #else
1994 template <typename T>
1995 struct type_identity { typedef T type; };
1996 template <typename T>
1997 using type_identity_t = typename type_identity<T>::type;
1998 #endif
1999
2000 /* Object generator function for temp_override, so you don't need to write the
2001 type of the object as a template argument.
2002
2003 Use as auto x = make_temp_override (flag); */
2004
2005 template <typename T>
2006 inline temp_override<T>
make_temp_override(T & var)2007 make_temp_override (T& var)
2008 {
2009 return { var };
2010 }
2011
2012 /* Likewise, but use as auto x = make_temp_override (flag, value); */
2013
2014 template <typename T>
2015 inline temp_override<T>
make_temp_override(T & var,type_identity_t<T> overrider)2016 make_temp_override (T& var, type_identity_t<T> overrider)
2017 {
2018 return { var, overrider };
2019 }
2020
2021 /* The cached class binding level, from the most recently exited
2022 class, or NULL if none. */
2023
2024 #define previous_class_level scope_chain->x_previous_class_level
2025
2026 /* A map from local variable declarations in the body of the template
2027 presently being instantiated to the corresponding instantiated
2028 local variables. */
2029
2030 #define local_specializations scope_chain->x_local_specializations
2031
2032 /* Nonzero if we are parsing the operand of a noexcept operator. */
2033
2034 #define cp_noexcept_operand scope_chain->noexcept_operand
2035
2036 struct named_label_entry; /* Defined in decl.cc. */
2037
2038 struct named_label_hash : ggc_remove <named_label_entry *>
2039 {
2040 typedef named_label_entry *value_type;
2041 typedef tree compare_type; /* An identifier. */
2042
2043 inline static hashval_t hash (value_type);
2044 inline static bool equal (const value_type, compare_type);
2045
2046 static const bool empty_zero_p = true;
mark_emptynamed_label_hash2047 inline static void mark_empty (value_type &p) {p = NULL;}
is_emptynamed_label_hash2048 inline static bool is_empty (value_type p) {return !p;}
2049
2050 /* Nothing is deletable. Everything is insertable. */
is_deletednamed_label_hash2051 inline static bool is_deleted (value_type) { return false; }
mark_deletednamed_label_hash2052 inline static void mark_deleted (value_type) { gcc_unreachable (); }
2053 };
2054
2055 /* Global state pertinent to the current function. */
2056
2057 struct GTY(()) language_function {
2058 struct c_language_function base;
2059
2060 tree x_cdtor_label;
2061 tree x_current_class_ptr;
2062 tree x_current_class_ref;
2063 tree x_eh_spec_block;
2064 tree x_in_charge_parm;
2065 tree x_vtt_parm;
2066 tree x_return_value;
2067
2068 BOOL_BITFIELD returns_value : 1;
2069 BOOL_BITFIELD returns_null : 1;
2070 BOOL_BITFIELD returns_abnormally : 1;
2071 BOOL_BITFIELD infinite_loop: 1;
2072 BOOL_BITFIELD x_in_function_try_handler : 1;
2073 BOOL_BITFIELD x_in_base_initializer : 1;
2074
2075 /* True if this function can throw an exception. */
2076 BOOL_BITFIELD can_throw : 1;
2077
2078 BOOL_BITFIELD invalid_constexpr : 1;
2079 BOOL_BITFIELD throwing_cleanup : 1;
2080
2081 hash_table<named_label_hash> *x_named_labels;
2082
2083 cp_binding_level *bindings;
2084
2085 /* Tracking possibly infinite loops. This is a vec<tree> only because
2086 vec<bool> doesn't work with gtype. */
2087 vec<tree, va_gc> *infinite_loops;
2088 };
2089
2090 /* The current C++-specific per-function global variables. */
2091
2092 #define cp_function_chain (cfun->language)
2093
2094 /* In a constructor destructor, the point at which all derived class
2095 destroying/construction has been done. I.e., just before a
2096 constructor returns, or before any base class destroying will be done
2097 in a destructor. */
2098
2099 #define cdtor_label cp_function_chain->x_cdtor_label
2100
2101 /* When we're processing a member function, current_class_ptr is the
2102 PARM_DECL for the `this' pointer. The current_class_ref is an
2103 expression for `*this'. */
2104
2105 #define current_class_ptr \
2106 (*(cfun && cp_function_chain \
2107 ? &cp_function_chain->x_current_class_ptr \
2108 : &scope_chain->x_current_class_ptr))
2109 #define current_class_ref \
2110 (*(cfun && cp_function_chain \
2111 ? &cp_function_chain->x_current_class_ref \
2112 : &scope_chain->x_current_class_ref))
2113
2114 /* The EH_SPEC_BLOCK for the exception-specifiers for the current
2115 function, if any. */
2116
2117 #define current_eh_spec_block cp_function_chain->x_eh_spec_block
2118
2119 /* The `__in_chrg' parameter for the current function. Only used for
2120 constructors and destructors. */
2121
2122 #define current_in_charge_parm cp_function_chain->x_in_charge_parm
2123
2124 /* The `__vtt_parm' parameter for the current function. Only used for
2125 constructors and destructors. */
2126
2127 #define current_vtt_parm cp_function_chain->x_vtt_parm
2128
2129 /* A boolean flag to control whether we need to clean up the return value if a
2130 local destructor throws. Only used in functions that return by value a
2131 class with a destructor. Which 'tors don't, so we can use the same
2132 field as current_vtt_parm. */
2133
2134 #define current_retval_sentinel current_vtt_parm
2135
2136 /* Set to 0 at beginning of a function definition, set to 1 if
2137 a return statement that specifies a return value is seen. */
2138
2139 #define current_function_returns_value cp_function_chain->returns_value
2140
2141 /* Set to 0 at beginning of a function definition, set to 1 if
2142 a return statement with no argument is seen. */
2143
2144 #define current_function_returns_null cp_function_chain->returns_null
2145
2146 /* Set to 0 at beginning of a function definition, set to 1 if
2147 a call to a noreturn function is seen. */
2148
2149 #define current_function_returns_abnormally \
2150 cp_function_chain->returns_abnormally
2151
2152 /* Set to 0 at beginning of a function definition, set to 1 if we see an
2153 obvious infinite loop. This can have false positives and false
2154 negatives, so it should only be used as a heuristic. */
2155
2156 #define current_function_infinite_loop cp_function_chain->infinite_loop
2157
2158 /* Nonzero if we are processing a base initializer. Zero elsewhere. */
2159 #define in_base_initializer cp_function_chain->x_in_base_initializer
2160
2161 #define in_function_try_handler cp_function_chain->x_in_function_try_handler
2162
2163 /* Expression always returned from function, or error_mark_node
2164 otherwise, for use by the automatic named return value optimization. */
2165
2166 #define current_function_return_value \
2167 (cp_function_chain->x_return_value)
2168
2169 /* In parser.cc. */
2170 extern tree cp_literal_operator_id (const char *);
2171
2172 #define NON_ERROR(NODE) ((NODE) == error_mark_node ? NULL_TREE : (NODE))
2173
2174 /* TRUE if a tree code represents a statement. */
2175 extern bool statement_code_p[MAX_TREE_CODES];
2176
2177 #define STATEMENT_CODE_P(CODE) statement_code_p[(int) (CODE)]
2178
2179 enum languages { lang_c, lang_cplusplus };
2180
2181 /* Macros to make error reporting functions' lives easier. */
2182 #define TYPE_LINKAGE_IDENTIFIER(NODE) \
2183 (TYPE_IDENTIFIER (TYPE_MAIN_VARIANT (NODE)))
2184 #define TYPE_NAME_STRING(NODE) (IDENTIFIER_POINTER (TYPE_IDENTIFIER (NODE)))
2185 #define TYPE_NAME_LENGTH(NODE) (IDENTIFIER_LENGTH (TYPE_IDENTIFIER (NODE)))
2186
2187 /* Any kind of anonymous type. */
2188 #define TYPE_ANON_P(NODE) \
2189 (TYPE_LINKAGE_IDENTIFIER (NODE) \
2190 && IDENTIFIER_ANON_P (TYPE_LINKAGE_IDENTIFIER (NODE)))
2191
2192 /* Nonzero if NODE, a TYPE, has no name for linkage purposes. */
2193 #define TYPE_UNNAMED_P(NODE) \
2194 (TYPE_ANON_P (NODE) \
2195 && !IDENTIFIER_LAMBDA_P (TYPE_LINKAGE_IDENTIFIER (NODE)))
2196
2197 /* The _DECL for this _TYPE. */
2198 #define TYPE_MAIN_DECL(NODE) (TYPE_STUB_DECL (TYPE_MAIN_VARIANT (NODE)))
2199
2200 /* Nonzero if T is a type that could resolve to any kind of concrete type
2201 at instantiation time. */
2202 #define WILDCARD_TYPE_P(T) \
2203 (TREE_CODE (T) == TEMPLATE_TYPE_PARM \
2204 || TREE_CODE (T) == TYPENAME_TYPE \
2205 || TREE_CODE (T) == TYPEOF_TYPE \
2206 || TREE_CODE (T) == BOUND_TEMPLATE_TEMPLATE_PARM \
2207 || TREE_CODE (T) == DECLTYPE_TYPE \
2208 || TREE_CODE (T) == DEPENDENT_OPERATOR_TYPE)
2209
2210 /* Nonzero if T is a class (or struct or union) type. Also nonzero
2211 for template type parameters, typename types, and instantiated
2212 template template parameters. Keep these checks in ascending code
2213 order. */
2214 #define MAYBE_CLASS_TYPE_P(T) (WILDCARD_TYPE_P (T) || CLASS_TYPE_P (T))
2215
2216 /* Set CLASS_TYPE_P for T to VAL. T must be a class, struct, or
2217 union type. */
2218 #define SET_CLASS_TYPE_P(T, VAL) \
2219 (TYPE_LANG_FLAG_5 (RECORD_OR_UNION_CHECK (T)) = (VAL))
2220
2221 /* Nonzero if T is a class type. Zero for template type parameters,
2222 typename types, and so forth. */
2223 #define CLASS_TYPE_P(T) \
2224 (RECORD_OR_UNION_CODE_P (TREE_CODE (T)) && TYPE_LANG_FLAG_5 (T))
2225
2226 /* Nonzero if T is a class type but not a union. */
2227 #define NON_UNION_CLASS_TYPE_P(T) \
2228 (TREE_CODE (T) == RECORD_TYPE && TYPE_LANG_FLAG_5 (T))
2229
2230 /* Keep these checks in ascending code order. */
2231 #define RECORD_OR_UNION_CODE_P(T) \
2232 ((T) == RECORD_TYPE || (T) == UNION_TYPE)
2233 #define OVERLOAD_TYPE_P(T) \
2234 (CLASS_TYPE_P (T) || TREE_CODE (T) == ENUMERAL_TYPE)
2235
2236 /* True if this type is dependent. This predicate is only valid if
2237 TYPE_DEPENDENT_P_VALID is true. */
2238 #define TYPE_DEPENDENT_P(NODE) TYPE_LANG_FLAG_0 (NODE)
2239
2240 /* True if dependent_type_p has been called for this type, with the
2241 result that TYPE_DEPENDENT_P is valid. */
2242 #define TYPE_DEPENDENT_P_VALID(NODE) TYPE_LANG_FLAG_6(NODE)
2243
2244 /* Nonzero if this type is const-qualified. */
2245 #define CP_TYPE_CONST_P(NODE) \
2246 ((cp_type_quals (NODE) & TYPE_QUAL_CONST) != 0)
2247
2248 /* Nonzero if this type is volatile-qualified. */
2249 #define CP_TYPE_VOLATILE_P(NODE) \
2250 ((cp_type_quals (NODE) & TYPE_QUAL_VOLATILE) != 0)
2251
2252 /* Nonzero if this type is restrict-qualified. */
2253 #define CP_TYPE_RESTRICT_P(NODE) \
2254 ((cp_type_quals (NODE) & TYPE_QUAL_RESTRICT) != 0)
2255
2256 /* Nonzero if this type is const-qualified, but not
2257 volatile-qualified. Other qualifiers are ignored. This macro is
2258 used to test whether or not it is OK to bind an rvalue to a
2259 reference. */
2260 #define CP_TYPE_CONST_NON_VOLATILE_P(NODE) \
2261 ((cp_type_quals (NODE) & (TYPE_QUAL_CONST | TYPE_QUAL_VOLATILE)) \
2262 == TYPE_QUAL_CONST)
2263
2264 #define FUNCTION_ARG_CHAIN(NODE) \
2265 TREE_CHAIN (TYPE_ARG_TYPES (TREE_TYPE (NODE)))
2266
2267 /* Given a FUNCTION_DECL, returns the first TREE_LIST out of TYPE_ARG_TYPES
2268 which refers to a user-written parameter. */
2269 #define FUNCTION_FIRST_USER_PARMTYPE(NODE) \
2270 skip_artificial_parms_for ((NODE), TYPE_ARG_TYPES (TREE_TYPE (NODE)))
2271
2272 /* Similarly, but for DECL_ARGUMENTS. */
2273 #define FUNCTION_FIRST_USER_PARM(NODE) \
2274 skip_artificial_parms_for ((NODE), DECL_ARGUMENTS (NODE))
2275
2276 /* Nonzero iff TYPE is derived from PARENT. Ignores accessibility and
2277 ambiguity issues. */
2278 #define DERIVED_FROM_P(PARENT, TYPE) \
2279 (lookup_base ((TYPE), (PARENT), ba_any, NULL, tf_none) != NULL_TREE)
2280
2281 /* Gives the visibility specification for a class type. */
2282 #define CLASSTYPE_VISIBILITY(TYPE) \
2283 DECL_VISIBILITY (TYPE_MAIN_DECL (TYPE))
2284 #define CLASSTYPE_VISIBILITY_SPECIFIED(TYPE) \
2285 DECL_VISIBILITY_SPECIFIED (TYPE_MAIN_DECL (TYPE))
2286
2287 struct GTY (()) tree_pair_s {
2288 tree purpose;
2289 tree value;
2290 };
2291 typedef tree_pair_s *tree_pair_p;
2292
2293 /* This structure provides additional information above and beyond
2294 what is provide in the ordinary tree_type. In the past, we used it
2295 for the types of class types, template parameters types, typename
2296 types, and so forth. However, there can be many (tens to hundreds
2297 of thousands) of template parameter types in a compilation, and
2298 there's no need for this additional information in that case.
2299 Therefore, we now use this data structure only for class types.
2300
2301 In the past, it was thought that there would be relatively few
2302 class types. However, in the presence of heavy use of templates,
2303 many (i.e., thousands) of classes can easily be generated.
2304 Therefore, we should endeavor to keep the size of this structure to
2305 a minimum. */
2306 struct GTY(()) lang_type {
2307 unsigned char align;
2308
2309 unsigned has_type_conversion : 1;
2310 unsigned has_copy_ctor : 1;
2311 unsigned has_default_ctor : 1;
2312 unsigned const_needs_init : 1;
2313 unsigned ref_needs_init : 1;
2314 unsigned has_const_copy_assign : 1;
2315 unsigned use_template : 2;
2316
2317 unsigned has_mutable : 1;
2318 unsigned com_interface : 1;
2319 unsigned non_pod_class : 1;
2320 unsigned nearly_empty_p : 1;
2321 unsigned user_align : 1;
2322 unsigned has_copy_assign : 1;
2323 unsigned has_new : 1;
2324 unsigned has_array_new : 1;
2325
2326 unsigned gets_delete : 2;
2327 unsigned interface_only : 1;
2328 unsigned interface_unknown : 1;
2329 unsigned contains_empty_class_p : 1;
2330 unsigned anon_aggr : 1;
2331 unsigned non_zero_init : 1;
2332 unsigned empty_p : 1;
2333 /* 32 bits allocated. */
2334
2335 unsigned vec_new_uses_cookie : 1;
2336 unsigned declared_class : 1;
2337 unsigned diamond_shaped : 1;
2338 unsigned repeated_base : 1;
2339 unsigned being_defined : 1;
2340 unsigned debug_requested : 1;
2341 unsigned fields_readonly : 1;
2342 unsigned ptrmemfunc_flag : 1;
2343
2344 unsigned lazy_default_ctor : 1;
2345 unsigned lazy_copy_ctor : 1;
2346 unsigned lazy_copy_assign : 1;
2347 unsigned lazy_destructor : 1;
2348 unsigned has_const_copy_ctor : 1;
2349 unsigned has_complex_copy_ctor : 1;
2350 unsigned has_complex_copy_assign : 1;
2351 unsigned non_aggregate : 1;
2352
2353 unsigned has_complex_dflt : 1;
2354 unsigned has_list_ctor : 1;
2355 unsigned non_std_layout : 1;
2356 unsigned is_literal : 1;
2357 unsigned lazy_move_ctor : 1;
2358 unsigned lazy_move_assign : 1;
2359 unsigned has_complex_move_ctor : 1;
2360 unsigned has_complex_move_assign : 1;
2361
2362 unsigned has_constexpr_ctor : 1;
2363 unsigned unique_obj_representations : 1;
2364 unsigned unique_obj_representations_set : 1;
2365 bool erroneous : 1;
2366 bool non_pod_aggregate : 1;
2367
2368 /* When adding a flag here, consider whether or not it ought to
2369 apply to a template instance if it applies to the template. If
2370 so, make sure to copy it in instantiate_class_template! */
2371
2372 /* There are some bits left to fill out a 32-bit word. Keep track
2373 of this by updating the size of this bitfield whenever you add or
2374 remove a flag. */
2375 unsigned dummy : 3;
2376
2377 tree primary_base;
2378 vec<tree_pair_s, va_gc> *vcall_indices;
2379 tree vtables;
2380 tree typeinfo_var;
2381 vec<tree, va_gc> *vbases;
2382 tree as_base;
2383 vec<tree, va_gc> *pure_virtuals;
2384 tree friend_classes;
2385 vec<tree, va_gc> * GTY((reorder ("resort_type_member_vec"))) members;
2386 tree key_method;
2387 tree decl_list;
2388 tree befriending_classes;
2389 /* In a RECORD_TYPE, information specific to Objective-C++, such
2390 as a list of adopted protocols or a pointer to a corresponding
2391 @interface. See objc/objc-act.h for details. */
2392 tree objc_info;
2393 /* FIXME reuse another field? */
2394 tree lambda_expr;
2395 };
2396
2397 /* We used to have a variant type for lang_type. Keep the name of the
2398 checking accessor for the sole survivor. */
2399 #define LANG_TYPE_CLASS_CHECK(NODE) (TYPE_LANG_SPECIFIC (NODE))
2400
2401 /* Nonzero for _CLASSTYPE means that operator delete is defined. */
2402 #define TYPE_GETS_DELETE(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->gets_delete)
2403 #define TYPE_GETS_REG_DELETE(NODE) (TYPE_GETS_DELETE (NODE) & 1)
2404 #define TYPE_GETS_VEC_DELETE(NODE) (TYPE_GETS_DELETE (NODE) & 2)
2405
2406 /* Nonzero if `new NODE[x]' should cause the allocation of extra
2407 storage to indicate how many array elements are in use. */
2408 #define TYPE_VEC_NEW_USES_COOKIE(NODE) \
2409 (CLASS_TYPE_P (NODE) \
2410 && LANG_TYPE_CLASS_CHECK (NODE)->vec_new_uses_cookie)
2411
2412 /* Nonzero means that this _CLASSTYPE node defines ways of converting
2413 itself to other types. */
2414 #define TYPE_HAS_CONVERSION(NODE) \
2415 (LANG_TYPE_CLASS_CHECK (NODE)->has_type_conversion)
2416
2417 /* Nonzero means that NODE (a class type) has a default constructor --
2418 but that it has not yet been declared. */
2419 #define CLASSTYPE_LAZY_DEFAULT_CTOR(NODE) \
2420 (LANG_TYPE_CLASS_CHECK (NODE)->lazy_default_ctor)
2421
2422 /* Nonzero means that NODE (a class type) has a copy constructor --
2423 but that it has not yet been declared. */
2424 #define CLASSTYPE_LAZY_COPY_CTOR(NODE) \
2425 (LANG_TYPE_CLASS_CHECK (NODE)->lazy_copy_ctor)
2426
2427 /* Nonzero means that NODE (a class type) has a move constructor --
2428 but that it has not yet been declared. */
2429 #define CLASSTYPE_LAZY_MOVE_CTOR(NODE) \
2430 (LANG_TYPE_CLASS_CHECK (NODE)->lazy_move_ctor)
2431
2432 /* Nonzero means that NODE (a class type) has an assignment operator
2433 -- but that it has not yet been declared. */
2434 #define CLASSTYPE_LAZY_COPY_ASSIGN(NODE) \
2435 (LANG_TYPE_CLASS_CHECK (NODE)->lazy_copy_assign)
2436
2437 /* Nonzero means that NODE (a class type) has an assignment operator
2438 -- but that it has not yet been declared. */
2439 #define CLASSTYPE_LAZY_MOVE_ASSIGN(NODE) \
2440 (LANG_TYPE_CLASS_CHECK (NODE)->lazy_move_assign)
2441
2442 /* Nonzero means that NODE (a class type) has a destructor -- but that
2443 it has not yet been declared. */
2444 #define CLASSTYPE_LAZY_DESTRUCTOR(NODE) \
2445 (LANG_TYPE_CLASS_CHECK (NODE)->lazy_destructor)
2446
2447 /* Nonzero means that NODE (a class type) is final */
2448 #define CLASSTYPE_FINAL(NODE) \
2449 TYPE_FINAL_P (NODE)
2450
2451
2452 /* Nonzero means that this _CLASSTYPE node overloads operator=(X&). */
2453 #define TYPE_HAS_COPY_ASSIGN(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->has_copy_assign)
2454
2455 /* True iff the class type NODE has an "operator =" whose parameter
2456 has a parameter of type "const X&". */
2457 #define TYPE_HAS_CONST_COPY_ASSIGN(NODE) \
2458 (LANG_TYPE_CLASS_CHECK (NODE)->has_const_copy_assign)
2459
2460 /* Nonzero means that this _CLASSTYPE node has an X(X&) constructor. */
2461 #define TYPE_HAS_COPY_CTOR(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->has_copy_ctor)
2462 #define TYPE_HAS_CONST_COPY_CTOR(NODE) \
2463 (LANG_TYPE_CLASS_CHECK (NODE)->has_const_copy_ctor)
2464
2465 /* Nonzero if this class has an X(initializer_list<T>) constructor. */
2466 #define TYPE_HAS_LIST_CTOR(NODE) \
2467 (LANG_TYPE_CLASS_CHECK (NODE)->has_list_ctor)
2468
2469 /* Nonzero if this class has a constexpr constructor other than a copy/move
2470 constructor. Note that a class can have constexpr constructors for
2471 static initialization even if it isn't a literal class. */
2472 #define TYPE_HAS_CONSTEXPR_CTOR(NODE) \
2473 (LANG_TYPE_CLASS_CHECK (NODE)->has_constexpr_ctor)
2474
2475 /* Nonzero if this class defines an overloaded operator new. (An
2476 operator new [] doesn't count.) */
2477 #define TYPE_HAS_NEW_OPERATOR(NODE) \
2478 (LANG_TYPE_CLASS_CHECK (NODE)->has_new)
2479
2480 /* Nonzero if this class defines an overloaded operator new[]. */
2481 #define TYPE_HAS_ARRAY_NEW_OPERATOR(NODE) \
2482 (LANG_TYPE_CLASS_CHECK (NODE)->has_array_new)
2483
2484 /* Nonzero means that this type is being defined. I.e., the left brace
2485 starting the definition of this type has been seen. */
2486 #define TYPE_BEING_DEFINED(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->being_defined)
2487
2488 /* Nonzero means that this type is either complete or being defined, so we
2489 can do lookup in it. */
2490 #define COMPLETE_OR_OPEN_TYPE_P(NODE) \
2491 (COMPLETE_TYPE_P (NODE) || (CLASS_TYPE_P (NODE) && TYPE_BEING_DEFINED (NODE)))
2492
2493 /* Mark bits for repeated base checks. */
2494 #define TYPE_MARKED_P(NODE) TREE_LANG_FLAG_6 (TYPE_CHECK (NODE))
2495
2496 /* Nonzero if the class NODE has multiple paths to the same (virtual)
2497 base object. */
2498 #define CLASSTYPE_DIAMOND_SHAPED_P(NODE) \
2499 (LANG_TYPE_CLASS_CHECK(NODE)->diamond_shaped)
2500
2501 /* Nonzero if the class NODE has multiple instances of the same base
2502 type. */
2503 #define CLASSTYPE_REPEATED_BASE_P(NODE) \
2504 (LANG_TYPE_CLASS_CHECK(NODE)->repeated_base)
2505
2506 /* The member function with which the vtable will be emitted:
2507 the first noninline non-pure-virtual member function. NULL_TREE
2508 if there is no key function or if this is a class template */
2509 #define CLASSTYPE_KEY_METHOD(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->key_method)
2510
2511 /* Vector of members. During definition, it is unordered and only
2512 member functions are present. After completion it is sorted and
2513 contains both member functions and non-functions. STAT_HACK is
2514 involved to preserve oneslot per name invariant. */
2515 #define CLASSTYPE_MEMBER_VEC(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->members)
2516
2517 /* For class templates, this is a TREE_LIST of all member data,
2518 functions, types, and friends in the order of declaration.
2519 The TREE_PURPOSE of each TREE_LIST is NULL_TREE for a friend,
2520 and the RECORD_TYPE for the class template otherwise. */
2521 #define CLASSTYPE_DECL_LIST(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->decl_list)
2522
2523 /* A FUNCTION_DECL or OVERLOAD for the constructors for NODE. These
2524 are the constructors that take an in-charge parameter. */
2525 #define CLASSTYPE_CONSTRUCTORS(NODE) \
2526 (get_class_binding_direct (NODE, ctor_identifier))
2527
2528 /* A FUNCTION_DECL for the destructor for NODE. This is the
2529 destructors that take an in-charge parameter. If
2530 CLASSTYPE_LAZY_DESTRUCTOR is true, then this entry will be NULL
2531 until the destructor is created with lazily_declare_fn. */
2532 #define CLASSTYPE_DESTRUCTOR(NODE) \
2533 (get_class_binding_direct (NODE, dtor_identifier))
2534
2535 /* Nonzero if NODE has a primary base class, i.e., a base class with
2536 which it shares the virtual function table pointer. */
2537 #define CLASSTYPE_HAS_PRIMARY_BASE_P(NODE) \
2538 (CLASSTYPE_PRIMARY_BINFO (NODE) != NULL_TREE)
2539
2540 /* If non-NULL, this is the binfo for the primary base class, i.e.,
2541 the base class which contains the virtual function table pointer
2542 for this class. */
2543 #define CLASSTYPE_PRIMARY_BINFO(NODE) \
2544 (LANG_TYPE_CLASS_CHECK (NODE)->primary_base)
2545
2546 /* A vector of BINFOs for the direct and indirect virtual base classes
2547 that this type uses in a post-order depth-first left-to-right
2548 order. (In other words, these bases appear in the order that they
2549 should be initialized.) */
2550 #define CLASSTYPE_VBASECLASSES(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->vbases)
2551
2552 /* The type corresponding to NODE when NODE is used as a base class,
2553 i.e., NODE without virtual base classes or tail padding. */
2554 #define CLASSTYPE_AS_BASE(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->as_base)
2555
2556 /* True iff NODE is the CLASSTYPE_AS_BASE version of some type. */
2557 #define IS_FAKE_BASE_TYPE(NODE) \
2558 (TREE_CODE (NODE) == RECORD_TYPE \
2559 && TYPE_CONTEXT (NODE) && CLASS_TYPE_P (TYPE_CONTEXT (NODE)) \
2560 && CLASSTYPE_AS_BASE (TYPE_CONTEXT (NODE)) == (NODE))
2561
2562 /* These are the size and alignment of the type without its virtual
2563 base classes, for when we use this type as a base itself. */
2564 #define CLASSTYPE_SIZE(NODE) TYPE_SIZE (CLASSTYPE_AS_BASE (NODE))
2565 #define CLASSTYPE_SIZE_UNIT(NODE) TYPE_SIZE_UNIT (CLASSTYPE_AS_BASE (NODE))
2566 #define CLASSTYPE_ALIGN(NODE) TYPE_ALIGN (CLASSTYPE_AS_BASE (NODE))
2567 #define CLASSTYPE_USER_ALIGN(NODE) TYPE_USER_ALIGN (CLASSTYPE_AS_BASE (NODE))
2568
2569 /* The alignment of NODE, without its virtual bases, in bytes. */
2570 #define CLASSTYPE_ALIGN_UNIT(NODE) \
2571 (CLASSTYPE_ALIGN (NODE) / BITS_PER_UNIT)
2572
2573 /* A vec<tree> of virtual functions which cannot be inherited by
2574 derived classes. When deriving from this type, the derived
2575 class must provide its own definition for each of these functions. */
2576 #define CLASSTYPE_PURE_VIRTUALS(NODE) \
2577 (LANG_TYPE_CLASS_CHECK (NODE)->pure_virtuals)
2578
2579 /* Nonzero means that this type is an abstract class type. */
2580 #define ABSTRACT_CLASS_TYPE_P(NODE) \
2581 (CLASS_TYPE_P (NODE) && CLASSTYPE_PURE_VIRTUALS(NODE))
2582
2583 /* Nonzero means that this type has an X() constructor. */
2584 #define TYPE_HAS_DEFAULT_CONSTRUCTOR(NODE) \
2585 (LANG_TYPE_CLASS_CHECK (NODE)->has_default_ctor)
2586
2587 /* Nonzero means that this type contains a mutable member. */
2588 #define CLASSTYPE_HAS_MUTABLE(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->has_mutable)
2589 #define TYPE_HAS_MUTABLE_P(NODE) (cp_has_mutable_p (NODE))
2590
2591 /* Nonzero means that this class type is not POD for the purpose of layout
2592 (as defined in the ABI). This is different from the language's POD. */
2593 #define CLASSTYPE_NON_LAYOUT_POD_P(NODE) \
2594 (LANG_TYPE_CLASS_CHECK (NODE)->non_pod_class)
2595
2596 /* Nonzero means that this class type is a non-standard-layout class. */
2597 #define CLASSTYPE_NON_STD_LAYOUT(NODE) \
2598 (LANG_TYPE_CLASS_CHECK (NODE)->non_std_layout)
2599
2600 /* Nonzero means that this class type does have unique object
2601 representations. */
2602 #define CLASSTYPE_UNIQUE_OBJ_REPRESENTATIONS(NODE) \
2603 (LANG_TYPE_CLASS_CHECK (NODE)->unique_obj_representations)
2604
2605 /* Nonzero means that this class type has
2606 CLASSTYPE_UNIQUE_OBJ_REPRESENTATIONS computed. */
2607 #define CLASSTYPE_UNIQUE_OBJ_REPRESENTATIONS_SET(NODE) \
2608 (LANG_TYPE_CLASS_CHECK (NODE)->unique_obj_representations_set)
2609
2610 /* Nonzero means that this class contains pod types whose default
2611 initialization is not a zero initialization (namely, pointers to
2612 data members). */
2613 #define CLASSTYPE_NON_ZERO_INIT_P(NODE) \
2614 (LANG_TYPE_CLASS_CHECK (NODE)->non_zero_init)
2615
2616 /* Nonzero if this class is "empty" in the sense of the C++ ABI. */
2617 #define CLASSTYPE_EMPTY_P(NODE) \
2618 (LANG_TYPE_CLASS_CHECK (NODE)->empty_p)
2619
2620 /* Nonzero if this class is "nearly empty", i.e., contains only a
2621 virtual function table pointer. */
2622 #define CLASSTYPE_NEARLY_EMPTY_P(NODE) \
2623 (LANG_TYPE_CLASS_CHECK (NODE)->nearly_empty_p)
2624
2625 /* Nonzero if this class contains an empty subobject. */
2626 #define CLASSTYPE_CONTAINS_EMPTY_CLASS_P(NODE) \
2627 (LANG_TYPE_CLASS_CHECK (NODE)->contains_empty_class_p)
2628
2629 /* A list of class types of which this type is a friend. The
2630 TREE_VALUE is normally a TYPE, but will be a TEMPLATE_DECL in the
2631 case of a template friend. */
2632 #define CLASSTYPE_FRIEND_CLASSES(NODE) \
2633 (LANG_TYPE_CLASS_CHECK (NODE)->friend_classes)
2634
2635 /* A list of the classes which grant friendship to this class. */
2636 #define CLASSTYPE_BEFRIENDING_CLASSES(NODE) \
2637 (LANG_TYPE_CLASS_CHECK (NODE)->befriending_classes)
2638
2639 /* The associated LAMBDA_EXPR that made this class. */
2640 #define CLASSTYPE_LAMBDA_EXPR(NODE) \
2641 (LANG_TYPE_CLASS_CHECK (NODE)->lambda_expr)
2642 /* The extra mangling scope for this closure type. */
2643 #define LAMBDA_TYPE_EXTRA_SCOPE(NODE) \
2644 (LAMBDA_EXPR_EXTRA_SCOPE (CLASSTYPE_LAMBDA_EXPR (NODE)))
2645
2646 /* Say whether this node was declared as a "class" or a "struct". */
2647 #define CLASSTYPE_DECLARED_CLASS(NODE) \
2648 (LANG_TYPE_CLASS_CHECK (NODE)->declared_class)
2649
2650 /* Nonzero if this class has const members
2651 which have no specified initialization. */
2652 #define CLASSTYPE_READONLY_FIELDS_NEED_INIT(NODE) \
2653 (TYPE_LANG_SPECIFIC (NODE) \
2654 ? LANG_TYPE_CLASS_CHECK (NODE)->const_needs_init : 0)
2655 #define SET_CLASSTYPE_READONLY_FIELDS_NEED_INIT(NODE, VALUE) \
2656 (LANG_TYPE_CLASS_CHECK (NODE)->const_needs_init = (VALUE))
2657
2658 /* Nonzero if this class has ref members
2659 which have no specified initialization. */
2660 #define CLASSTYPE_REF_FIELDS_NEED_INIT(NODE) \
2661 (TYPE_LANG_SPECIFIC (NODE) \
2662 ? LANG_TYPE_CLASS_CHECK (NODE)->ref_needs_init : 0)
2663 #define SET_CLASSTYPE_REF_FIELDS_NEED_INIT(NODE, VALUE) \
2664 (LANG_TYPE_CLASS_CHECK (NODE)->ref_needs_init = (VALUE))
2665
2666 /* Nonzero if this class is included from a header file which employs
2667 `#pragma interface', and it is not included in its implementation file. */
2668 #define CLASSTYPE_INTERFACE_ONLY(NODE) \
2669 (LANG_TYPE_CLASS_CHECK (NODE)->interface_only)
2670
2671 /* True if we have already determined whether or not vtables, VTTs,
2672 typeinfo, and other similar per-class data should be emitted in
2673 this translation unit. This flag does not indicate whether or not
2674 these items should be emitted; it only indicates that we know one
2675 way or the other. */
2676 #define CLASSTYPE_INTERFACE_KNOWN(NODE) \
2677 (LANG_TYPE_CLASS_CHECK (NODE)->interface_unknown == 0)
2678 /* The opposite of CLASSTYPE_INTERFACE_KNOWN. */
2679 #define CLASSTYPE_INTERFACE_UNKNOWN(NODE) \
2680 (LANG_TYPE_CLASS_CHECK (NODE)->interface_unknown)
2681
2682 #define SET_CLASSTYPE_INTERFACE_UNKNOWN_X(NODE,X) \
2683 (LANG_TYPE_CLASS_CHECK (NODE)->interface_unknown = !!(X))
2684 #define SET_CLASSTYPE_INTERFACE_UNKNOWN(NODE) \
2685 (LANG_TYPE_CLASS_CHECK (NODE)->interface_unknown = 1)
2686 #define SET_CLASSTYPE_INTERFACE_KNOWN(NODE) \
2687 (LANG_TYPE_CLASS_CHECK (NODE)->interface_unknown = 0)
2688
2689 /* Nonzero if a _DECL node requires us to output debug info for this class. */
2690 #define CLASSTYPE_DEBUG_REQUESTED(NODE) \
2691 (LANG_TYPE_CLASS_CHECK (NODE)->debug_requested)
2692
2693 /* True if we saw errors while instantiating this class. */
2694 #define CLASSTYPE_ERRONEOUS(NODE) \
2695 (LANG_TYPE_CLASS_CHECK (NODE)->erroneous)
2696
2697 /* True if this class is non-layout-POD only because it was not an aggregate
2698 before C++14. If we run out of bits in lang_type, this could be replaced
2699 with a hash_set only filled in when abi_version_crosses (17). */
2700 #define CLASSTYPE_NON_POD_AGGREGATE(NODE) \
2701 (LANG_TYPE_CLASS_CHECK (NODE)->non_pod_aggregate)
2702
2703 /* Additional macros for inheritance information. */
2704
2705 /* Nonzero means that this class is on a path leading to a new vtable. */
2706 #define BINFO_VTABLE_PATH_MARKED(NODE) BINFO_FLAG_1 (NODE)
2707
2708 /* Nonzero means B (a BINFO) has its own vtable. Any copies will not
2709 have this flag set. */
2710 #define BINFO_NEW_VTABLE_MARKED(B) (BINFO_FLAG_2 (B))
2711
2712 /* Compare a BINFO_TYPE with another type for equality. For a binfo,
2713 this is functionally equivalent to using same_type_p, but
2714 measurably faster. At least one of the arguments must be a
2715 BINFO_TYPE. The other can be a BINFO_TYPE or a regular type. If
2716 BINFO_TYPE(T) ever stops being the main variant of the class the
2717 binfo is for, this macro must change. */
2718 #define SAME_BINFO_TYPE_P(A, B) ((A) == (B))
2719
2720 /* Any subobject that needs a new vtable must have a vptr and must not
2721 be a non-virtual primary base (since it would then use the vtable from a
2722 derived class and never become non-primary.) */
2723 #define SET_BINFO_NEW_VTABLE_MARKED(B) \
2724 (BINFO_NEW_VTABLE_MARKED (B) = 1, \
2725 gcc_assert (!BINFO_PRIMARY_P (B) || BINFO_VIRTUAL_P (B)), \
2726 gcc_assert (TYPE_VFIELD (BINFO_TYPE (B))))
2727
2728 /* Nonzero if this binfo is for a dependent base - one that should not
2729 be searched. */
2730 #define BINFO_DEPENDENT_BASE_P(NODE) BINFO_FLAG_3 (NODE)
2731
2732 /* Nonzero if this binfo has lost its primary base binfo (because that
2733 is a nearly-empty virtual base that has been taken by some other
2734 base in the complete hierarchy. */
2735 #define BINFO_LOST_PRIMARY_P(NODE) BINFO_FLAG_4 (NODE)
2736
2737 /* Nonzero if this BINFO is a primary base class. */
2738 #define BINFO_PRIMARY_P(NODE) BINFO_FLAG_5(NODE)
2739
2740 /* A vec<tree_pair_s> of the vcall indices associated with the class
2741 NODE. The PURPOSE of each element is a FUNCTION_DECL for a virtual
2742 function. The VALUE is the index into the virtual table where the
2743 vcall offset for that function is stored, when NODE is a virtual
2744 base. */
2745 #define CLASSTYPE_VCALL_INDICES(NODE) \
2746 (LANG_TYPE_CLASS_CHECK (NODE)->vcall_indices)
2747
2748 /* The various vtables for the class NODE. The primary vtable will be
2749 first, followed by the construction vtables and VTT, if any. */
2750 #define CLASSTYPE_VTABLES(NODE) \
2751 (LANG_TYPE_CLASS_CHECK (NODE)->vtables)
2752
2753 /* The std::type_info variable representing this class, or NULL if no
2754 such variable has been created. This field is only set for the
2755 TYPE_MAIN_VARIANT of the class. */
2756 #define CLASSTYPE_TYPEINFO_VAR(NODE) \
2757 (LANG_TYPE_CLASS_CHECK (NODE)->typeinfo_var)
2758
2759 /* Accessor macros for the BINFO_VIRTUALS list. */
2760
2761 /* The number of bytes by which to adjust the `this' pointer when
2762 calling this virtual function. Subtract this value from the this
2763 pointer. Always non-NULL, might be constant zero though. */
2764 #define BV_DELTA(NODE) (TREE_PURPOSE (NODE))
2765
2766 /* If non-NULL, the vtable index at which to find the vcall offset
2767 when calling this virtual function. Add the value at that vtable
2768 index to the this pointer. */
2769 #define BV_VCALL_INDEX(NODE) (TREE_TYPE (NODE))
2770
2771 /* The function to call. */
2772 #define BV_FN(NODE) (TREE_VALUE (NODE))
2773
2774 /* Whether or not this entry is for a lost primary virtual base. */
2775 #define BV_LOST_PRIMARY(NODE) (TREE_LANG_FLAG_0 (NODE))
2776
2777 /* For FUNCTION_TYPE or METHOD_TYPE, a list of the exceptions that
2778 this type can raise. Each TREE_VALUE is a _TYPE. The TREE_VALUE
2779 will be NULL_TREE to indicate a throw specification of `()', or
2780 no exceptions allowed. For a noexcept specification, TREE_VALUE
2781 is NULL_TREE and TREE_PURPOSE is the constant-expression. For
2782 a deferred noexcept-specification, TREE_PURPOSE is a DEFERRED_NOEXCEPT
2783 (for templates) or an OVERLOAD list of functions (for implicitly
2784 declared functions). */
2785 #define TYPE_RAISES_EXCEPTIONS(NODE) \
2786 TYPE_LANG_SLOT_1 (FUNC_OR_METHOD_CHECK (NODE))
2787
2788 /* For FUNCTION_TYPE or METHOD_TYPE, return 1 iff it is declared `throw()'
2789 or noexcept(true). */
2790 #define TYPE_NOTHROW_P(NODE) nothrow_spec_p (TYPE_RAISES_EXCEPTIONS (NODE))
2791
2792 /* For FUNCTION_TYPE or METHOD_TYPE, true if NODE is noexcept. This is the
2793 case for things declared noexcept(true) and, with -fnothrow-opt, for
2794 throw() functions. */
2795 #define TYPE_NOEXCEPT_P(NODE) type_noexcept_p (NODE)
2796
2797 /* The binding level associated with the namespace. */
2798 #define NAMESPACE_LEVEL(NODE) \
2799 (LANG_DECL_NS_CHECK (NODE)->level)
2800
2801 /* Discriminator values for lang_decl. */
2802
2803 enum lang_decl_selector
2804 {
2805 lds_min,
2806 lds_fn,
2807 lds_ns,
2808 lds_parm,
2809 lds_decomp
2810 };
2811
2812 /* Flags shared by all forms of DECL_LANG_SPECIFIC.
2813
2814 Some of the flags live here only to make lang_decl_min/fn smaller. Do
2815 not make this struct larger than 32 bits. */
2816
2817 struct GTY(()) lang_decl_base {
2818 ENUM_BITFIELD(lang_decl_selector) selector : 3;
2819 ENUM_BITFIELD(languages) language : 1;
2820 unsigned use_template : 2;
2821 unsigned not_really_extern : 1; /* var or fn */
2822 unsigned initialized_in_class : 1; /* var or fn */
2823
2824 unsigned threadprivate_or_deleted_p : 1; /* var or fn */
2825 /* anticipated_p is no longer used for anticipated_decls (fn, type
2826 or template). It is used as DECL_OMP_PRIVATIZED_MEMBER in
2827 var. */
2828 unsigned anticipated_p : 1;
2829 unsigned friend_or_tls : 1; /* var, fn, type or template */
2830 unsigned unknown_bound_p : 1; /* var */
2831 unsigned odr_used : 1; /* var or fn */
2832 unsigned concept_p : 1; /* applies to vars and functions */
2833 unsigned var_declared_inline_p : 1; /* var */
2834 unsigned dependent_init_p : 1; /* var */
2835
2836 /* The following apply to VAR, FUNCTION, TYPE, CONCEPT, & NAMESPACE
2837 decls. */
2838 // FIXME: Purview and Attachment are not the same thing, due to
2839 // linkage-declarations. The modules code presumes they are the
2840 // same. (For context, linkage-decl semantics was a very late
2841 // change). We need a module_attachment_p flag, and this will allow
2842 // some simplification of how we handle header unit entities.
2843 // Hurrah!
2844 unsigned module_purview_p : 1; /* in module purview (not GMF) */
2845 unsigned module_import_p : 1; /* from an import */
2846 unsigned module_entity_p : 1; /* is in the entitity ary &
2847 hash. */
2848 /* VAR_DECL or FUNCTION_DECL has attached decls. */
2849 unsigned module_attached_p : 1;
2850
2851 /* 12 spare bits. */
2852 };
2853
2854 /* True for DECL codes which have template info and access. */
2855 #define LANG_DECL_HAS_MIN(NODE) \
2856 (VAR_OR_FUNCTION_DECL_P (NODE) \
2857 || TREE_CODE (NODE) == FIELD_DECL \
2858 || TREE_CODE (NODE) == CONST_DECL \
2859 || TREE_CODE (NODE) == TYPE_DECL \
2860 || TREE_CODE (NODE) == TEMPLATE_DECL \
2861 || TREE_CODE (NODE) == USING_DECL \
2862 || TREE_CODE (NODE) == CONCEPT_DECL)
2863
2864 /* DECL_LANG_SPECIFIC for the above codes. */
2865
2866 struct GTY(()) lang_decl_min {
2867 struct lang_decl_base base; /* 32-bits. */
2868
2869 /* In a FUNCTION_DECL for which DECL_THUNK_P holds, this is
2870 THUNK_ALIAS.
2871 In a FUNCTION_DECL for which DECL_THUNK_P does not hold,
2872 VAR_DECL, TYPE_DECL, or TEMPLATE_DECL, this is
2873 DECL_TEMPLATE_INFO. */
2874 tree template_info;
2875
2876 /* In a DECL_THUNK_P FUNCTION_DECL, this is THUNK_VIRTUAL_OFFSET.
2877 In a lambda-capture proxy VAR_DECL, this is DECL_CAPTURED_VARIABLE.
2878 In a function-scope TREE_STATIC VAR_DECL or IMPLICIT_TYPEDEF_P TYPE_DECL,
2879 this is DECL_DISCRIMINATOR.
2880 In a DECL_LOCAL_DECL_P decl, this is the namespace decl it aliases.
2881 Otherwise, in a class-scope DECL, this is DECL_ACCESS. */
2882 tree access;
2883 };
2884
2885 /* Additional DECL_LANG_SPECIFIC information for functions. */
2886
2887 struct GTY(()) lang_decl_fn {
2888 struct lang_decl_min min;
2889
2890 /* In a overloaded operator, this is the compressed operator code. */
2891 unsigned ovl_op_code : 6;
2892 unsigned global_ctor_p : 1;
2893 unsigned global_dtor_p : 1;
2894
2895 unsigned static_function : 1;
2896 unsigned pure_virtual : 1;
2897 unsigned defaulted_p : 1;
2898 unsigned has_in_charge_parm_p : 1;
2899 unsigned has_vtt_parm_p : 1;
2900 unsigned pending_inline_p : 1;
2901 unsigned nonconverting : 1;
2902 unsigned thunk_p : 1;
2903
2904 unsigned this_thunk_p : 1;
2905 unsigned omp_declare_reduction_p : 1;
2906 unsigned has_dependent_explicit_spec_p : 1;
2907 unsigned immediate_fn_p : 1;
2908 unsigned maybe_deleted : 1;
2909 unsigned coroutine_p : 1;
2910 unsigned implicit_constexpr : 1;
2911
2912 unsigned spare : 9;
2913
2914 /* 32-bits padding on 64-bit host. */
2915
2916 /* For a non-thunk function decl, this is a tree list of
2917 friendly classes. For a thunk function decl, it is the
2918 thunked to function decl. */
2919 tree befriending_classes;
2920
2921 /* For a virtual FUNCTION_DECL for which
2922 DECL_THIS_THUNK_P does not hold, this is DECL_THUNKS. Both
2923 this pointer and result pointer adjusting thunks are
2924 chained here. This pointer thunks to return pointer thunks
2925 will be chained on the return pointer thunk.
2926 For a DECL_CONSTUCTOR_P FUNCTION_DECL, this is the base from
2927 whence we inherit. Otherwise, it is the class in which a
2928 (namespace-scope) friend is defined (if any). */
2929 tree context;
2930
2931 union lang_decl_u5
2932 {
2933 /* In a non-thunk FUNCTION_DECL, this is DECL_CLONED_FUNCTION. */
2934 tree GTY ((tag ("0"))) cloned_function;
2935
2936 /* In a FUNCTION_DECL for which THUNK_P holds this is the
2937 THUNK_FIXED_OFFSET. */
2938 HOST_WIDE_INT GTY ((tag ("1"))) fixed_offset;
2939 } GTY ((desc ("%1.thunk_p"))) u5;
2940
2941 union lang_decl_u3
2942 {
2943 struct cp_token_cache * GTY ((tag ("1"))) pending_inline_info;
2944 tree GTY ((tag ("0"))) saved_auto_return_type;
2945 } GTY ((desc ("%1.pending_inline_p"))) u;
2946
2947 };
2948
2949 /* DECL_LANG_SPECIFIC for namespaces. */
2950
2951 struct GTY(()) lang_decl_ns {
2952 struct lang_decl_base base; /* 32 bits. */
2953 cp_binding_level *level;
2954
2955 /* Inline children. Needs to be va_gc, because of PCH. */
2956 vec<tree, va_gc> *inlinees;
2957
2958 /* Hash table of bound decls. It'd be nice to have this inline, but
2959 as the hash_map has a dtor, we can't then put this struct into a
2960 union (until moving to c++11). */
2961 hash_table<named_decl_hash> *bindings;
2962 };
2963
2964 /* DECL_LANG_SPECIFIC for parameters. */
2965
2966 struct GTY(()) lang_decl_parm {
2967 struct lang_decl_base base; /* 32 bits. */
2968 int level;
2969 int index;
2970 };
2971
2972 /* Additional DECL_LANG_SPECIFIC information for structured bindings. */
2973
2974 struct GTY(()) lang_decl_decomp {
2975 struct lang_decl_min min;
2976 /* The artificial underlying "e" variable of the structured binding
2977 variable. */
2978 tree base;
2979 };
2980
2981 /* DECL_LANG_SPECIFIC for all types. It would be nice to just make this a
2982 union rather than a struct containing a union as its only field, but
2983 tree.h declares it as a struct. */
2984
2985 struct GTY(()) lang_decl {
2986 union GTY((desc ("%h.base.selector"))) lang_decl_u {
2987 /* Nothing of only the base type exists. */
2988 struct lang_decl_base GTY ((default)) base;
2989 struct lang_decl_min GTY((tag ("lds_min"))) min;
2990 struct lang_decl_fn GTY ((tag ("lds_fn"))) fn;
2991 struct lang_decl_ns GTY((tag ("lds_ns"))) ns;
2992 struct lang_decl_parm GTY((tag ("lds_parm"))) parm;
2993 struct lang_decl_decomp GTY((tag ("lds_decomp"))) decomp;
2994 } u;
2995 };
2996
2997 /* Looks through a template (if present) to find what it declares. */
2998 #define STRIP_TEMPLATE(NODE) \
2999 (TREE_CODE (NODE) == TEMPLATE_DECL ? DECL_TEMPLATE_RESULT (NODE) : NODE)
3000
3001 #if defined ENABLE_TREE_CHECKING && (GCC_VERSION >= 2007)
3002
3003 #define LANG_DECL_MIN_CHECK(NODE) __extension__ \
3004 ({ struct lang_decl *lt = DECL_LANG_SPECIFIC (NODE); \
3005 if (!LANG_DECL_HAS_MIN (NODE)) \
3006 lang_check_failed (__FILE__, __LINE__, __FUNCTION__); \
3007 <->u.min; })
3008
3009 /* We want to be able to check DECL_CONSTRUCTOR_P and such on a function
3010 template, not just on a FUNCTION_DECL. So when looking for things in
3011 lang_decl_fn, look down through a TEMPLATE_DECL into its result. */
3012 #define LANG_DECL_FN_CHECK(NODE) __extension__ \
3013 ({ struct lang_decl *lt = DECL_LANG_SPECIFIC (STRIP_TEMPLATE (NODE)); \
3014 if (!DECL_DECLARES_FUNCTION_P (NODE) \
3015 || lt->u.base.selector != lds_fn) \
3016 lang_check_failed (__FILE__, __LINE__, __FUNCTION__); \
3017 <->u.fn; })
3018
3019 #define LANG_DECL_NS_CHECK(NODE) __extension__ \
3020 ({ struct lang_decl *lt = DECL_LANG_SPECIFIC (NODE); \
3021 if (TREE_CODE (NODE) != NAMESPACE_DECL \
3022 || lt->u.base.selector != lds_ns) \
3023 lang_check_failed (__FILE__, __LINE__, __FUNCTION__); \
3024 <->u.ns; })
3025
3026 #define LANG_DECL_PARM_CHECK(NODE) __extension__ \
3027 ({ struct lang_decl *lt = DECL_LANG_SPECIFIC (NODE); \
3028 if (TREE_CODE (NODE) != PARM_DECL \
3029 || lt->u.base.selector != lds_parm) \
3030 lang_check_failed (__FILE__, __LINE__, __FUNCTION__); \
3031 <->u.parm; })
3032
3033 #define LANG_DECL_DECOMP_CHECK(NODE) __extension__ \
3034 ({ struct lang_decl *lt = DECL_LANG_SPECIFIC (NODE); \
3035 if (!VAR_P (NODE) \
3036 || lt->u.base.selector != lds_decomp) \
3037 lang_check_failed (__FILE__, __LINE__, __FUNCTION__); \
3038 <->u.decomp; })
3039
3040 #else
3041
3042 #define LANG_DECL_MIN_CHECK(NODE) \
3043 (&DECL_LANG_SPECIFIC (NODE)->u.min)
3044
3045 #define LANG_DECL_FN_CHECK(NODE) \
3046 (&DECL_LANG_SPECIFIC (STRIP_TEMPLATE (NODE))->u.fn)
3047
3048 #define LANG_DECL_NS_CHECK(NODE) \
3049 (&DECL_LANG_SPECIFIC (NODE)->u.ns)
3050
3051 #define LANG_DECL_PARM_CHECK(NODE) \
3052 (&DECL_LANG_SPECIFIC (NODE)->u.parm)
3053
3054 #define LANG_DECL_DECOMP_CHECK(NODE) \
3055 (&DECL_LANG_SPECIFIC (NODE)->u.decomp)
3056
3057 #endif /* ENABLE_TREE_CHECKING */
3058
3059 /* For a FUNCTION_DECL or a VAR_DECL, the language linkage for the
3060 declaration. Some entities (like a member function in a local
3061 class, or a local variable) do not have linkage at all, and this
3062 macro should not be used in those cases.
3063
3064 Implementation note: A FUNCTION_DECL without DECL_LANG_SPECIFIC was
3065 created by language-independent code, and has C linkage. Most
3066 VAR_DECLs have C++ linkage, and do not have DECL_LANG_SPECIFIC, but
3067 we do create DECL_LANG_SPECIFIC for variables with non-C++ linkage. */
3068 #define DECL_LANGUAGE(NODE) \
3069 (DECL_LANG_SPECIFIC (NODE) \
3070 ? DECL_LANG_SPECIFIC (NODE)->u.base.language \
3071 : (TREE_CODE (NODE) == FUNCTION_DECL \
3072 ? lang_c : lang_cplusplus))
3073
3074 /* Set the language linkage for NODE to LANGUAGE. */
3075 #define SET_DECL_LANGUAGE(NODE, LANGUAGE) \
3076 (DECL_LANG_SPECIFIC (NODE)->u.base.language = (LANGUAGE))
3077
3078 /* For FUNCTION_DECLs and TEMPLATE_DECLs: nonzero means that this function
3079 is a constructor. */
3080 #define DECL_CONSTRUCTOR_P(NODE) \
3081 DECL_CXX_CONSTRUCTOR_P (STRIP_TEMPLATE (NODE))
3082
3083 /* Nonzero if NODE (a FUNCTION_DECL) is a constructor for a complete
3084 object. */
3085 #define DECL_COMPLETE_CONSTRUCTOR_P(NODE) \
3086 (DECL_NAME (NODE) == complete_ctor_identifier)
3087
3088 /* Nonzero if NODE (a FUNCTION_DECL) is a constructor for a base
3089 object. */
3090 #define DECL_BASE_CONSTRUCTOR_P(NODE) \
3091 (DECL_NAME (NODE) == base_ctor_identifier)
3092
3093 /* Nonzero if NODE (a FUNCTION_DECL) is a constructor, but not either the
3094 specialized in-charge constructor or the specialized not-in-charge
3095 constructor. */
3096 #define DECL_MAYBE_IN_CHARGE_CONSTRUCTOR_P(NODE) \
3097 (DECL_NAME (NODE) == ctor_identifier)
3098
3099 /* Nonzero if NODE (a FUNCTION_DECL) is a copy constructor. */
3100 #define DECL_COPY_CONSTRUCTOR_P(NODE) \
3101 (DECL_CONSTRUCTOR_P (NODE) && copy_fn_p (NODE) > 0)
3102
3103 /* Nonzero if NODE (a FUNCTION_DECL) is a move constructor. */
3104 #define DECL_MOVE_CONSTRUCTOR_P(NODE) \
3105 (DECL_CONSTRUCTOR_P (NODE) && move_fn_p (NODE))
3106
3107 /* Nonzero if NODE (a FUNCTION_DECL or TEMPLATE_DECL)
3108 is a destructor. */
3109 #define DECL_DESTRUCTOR_P(NODE) \
3110 DECL_CXX_DESTRUCTOR_P (STRIP_TEMPLATE (NODE))
3111
3112 /* Nonzero if NODE (a FUNCTION_DECL) is a destructor, but not the
3113 specialized in-charge constructor, in-charge deleting constructor,
3114 or the base destructor. */
3115 #define DECL_MAYBE_IN_CHARGE_DESTRUCTOR_P(NODE) \
3116 (DECL_NAME (NODE) == dtor_identifier)
3117
3118 /* Nonzero if NODE (a FUNCTION_DECL) is a destructor for a complete
3119 object. */
3120 #define DECL_COMPLETE_DESTRUCTOR_P(NODE) \
3121 (DECL_NAME (NODE) == complete_dtor_identifier)
3122
3123 /* Nonzero if NODE (a FUNCTION_DECL) is a destructor for a base
3124 object. */
3125 #define DECL_BASE_DESTRUCTOR_P(NODE) \
3126 (DECL_NAME (NODE) == base_dtor_identifier)
3127
3128 /* Nonzero if NODE (a FUNCTION_DECL) is a destructor for a complete
3129 object that deletes the object after it has been destroyed. */
3130 #define DECL_DELETING_DESTRUCTOR_P(NODE) \
3131 (DECL_NAME (NODE) == deleting_dtor_identifier)
3132
3133 /* Nonzero if either DECL_MAYBE_IN_CHARGE_CONSTRUCTOR_P or
3134 DECL_MAYBE_IN_CHARGE_DESTRUCTOR_P is true of NODE. */
3135 #define DECL_MAYBE_IN_CHARGE_CDTOR_P(NODE) \
3136 (DECL_MAYBE_IN_CHARGE_CONSTRUCTOR_P (NODE) \
3137 || DECL_MAYBE_IN_CHARGE_DESTRUCTOR_P (NODE))
3138
3139 /* Nonzero if NODE (a _DECL) is a cloned constructor or
3140 destructor. */
3141 #define DECL_CLONED_FUNCTION_P(NODE) \
3142 (DECL_NAME (NODE) \
3143 && IDENTIFIER_CDTOR_P (DECL_NAME (NODE)) \
3144 && !DECL_MAYBE_IN_CHARGE_CDTOR_P (NODE))
3145
3146 /* If DECL_CLONED_FUNCTION_P holds, this is the function that was
3147 cloned. */
3148 #define DECL_CLONED_FUNCTION(NODE) \
3149 (DECL_LANG_SPECIFIC (FUNCTION_DECL_CHECK (NODE))->u.fn.u5.cloned_function)
3150
3151 /* Perform an action for each clone of FN, if FN is a function with
3152 clones. This macro should be used like:
3153
3154 FOR_EACH_CLONE (clone, fn)
3155 { ... }
3156
3157 */
3158 #define FOR_EACH_CLONE(CLONE, FN) \
3159 if (!(TREE_CODE (FN) == FUNCTION_DECL \
3160 && DECL_MAYBE_IN_CHARGE_CDTOR_P (FN))) \
3161 ; \
3162 else \
3163 for (CLONE = DECL_CHAIN (FN); \
3164 CLONE && DECL_CLONED_FUNCTION_P (CLONE); \
3165 CLONE = DECL_CHAIN (CLONE))
3166
3167 /* Nonzero if NODE has DECL_DISCRIMINATOR and not DECL_ACCESS. */
3168 #define DECL_DISCRIMINATOR_P(NODE) \
3169 (((TREE_CODE (NODE) == VAR_DECL && TREE_STATIC (NODE)) \
3170 || DECL_IMPLICIT_TYPEDEF_P (NODE)) \
3171 && DECL_FUNCTION_SCOPE_P (NODE))
3172
3173 /* Discriminator for name mangling. */
3174 #define DECL_DISCRIMINATOR(NODE) (LANG_DECL_MIN_CHECK (NODE)->access)
3175
3176 /* The index of a user-declared parameter in its function, starting at 1.
3177 All artificial parameters will have index 0. */
3178 #define DECL_PARM_INDEX(NODE) \
3179 (LANG_DECL_PARM_CHECK (NODE)->index)
3180
3181 /* The level of a user-declared parameter in its function, starting at 1.
3182 A parameter of the function will have level 1; a parameter of the first
3183 nested function declarator (i.e. t in void f (void (*p)(T t))) will have
3184 level 2. */
3185 #define DECL_PARM_LEVEL(NODE) \
3186 (LANG_DECL_PARM_CHECK (NODE)->level)
3187
3188 /* Nonzero if the VTT parm has been added to NODE. */
3189 #define DECL_HAS_VTT_PARM_P(NODE) \
3190 (LANG_DECL_FN_CHECK (NODE)->has_vtt_parm_p)
3191
3192 /* Nonzero if NODE is a user-defined conversion operator. */
3193 #define DECL_CONV_FN_P(NODE) IDENTIFIER_CONV_OP_P (DECL_NAME (NODE))
3194
3195 /* The type to which conversion operator FN converts to. */
3196 #define DECL_CONV_FN_TYPE(FN) \
3197 TREE_TYPE ((gcc_checking_assert (DECL_CONV_FN_P (FN)), DECL_NAME (FN)))
3198
3199 /* Nonzero if NODE, a static data member, was declared in its class as an
3200 array of unknown bound. */
3201 #define VAR_HAD_UNKNOWN_BOUND(NODE) \
3202 (DECL_LANG_SPECIFIC (VAR_DECL_CHECK (NODE)) \
3203 ? DECL_LANG_SPECIFIC (NODE)->u.base.unknown_bound_p \
3204 : false)
3205 #define SET_VAR_HAD_UNKNOWN_BOUND(NODE) \
3206 (DECL_LANG_SPECIFIC (VAR_DECL_CHECK (NODE))->u.base.unknown_bound_p = true)
3207
3208 /* True iff decl NODE is for an overloaded operator. */
3209 #define DECL_OVERLOADED_OPERATOR_P(NODE) \
3210 IDENTIFIER_ANY_OP_P (DECL_NAME (NODE))
3211
3212 /* Nonzero if NODE is an assignment operator (including += and such). */
3213 #define DECL_ASSIGNMENT_OPERATOR_P(NODE) \
3214 IDENTIFIER_ASSIGN_OP_P (DECL_NAME (NODE))
3215
3216 /* NODE is a function_decl for an overloaded operator. Return its
3217 compressed (raw) operator code. Note that this is not a TREE_CODE. */
3218 #define DECL_OVERLOADED_OPERATOR_CODE_RAW(NODE) \
3219 (LANG_DECL_FN_CHECK (NODE)->ovl_op_code)
3220
3221 /* DECL is an overloaded operator. Test whether it is for TREE_CODE
3222 (a literal constant). */
3223 #define DECL_OVERLOADED_OPERATOR_IS(DECL, CODE) \
3224 (DECL_OVERLOADED_OPERATOR_CODE_RAW (DECL) == OVL_OP_##CODE)
3225
3226 /* For FUNCTION_DECLs: nonzero means that this function is a
3227 constructor or a destructor with an extra in-charge parameter to
3228 control whether or not virtual bases are constructed. */
3229 #define DECL_HAS_IN_CHARGE_PARM_P(NODE) \
3230 (LANG_DECL_FN_CHECK (NODE)->has_in_charge_parm_p)
3231
3232 /* Nonzero if DECL is a declaration of __builtin_constant_p. */
3233 #define DECL_IS_BUILTIN_CONSTANT_P(NODE) \
3234 (TREE_CODE (NODE) == FUNCTION_DECL \
3235 && DECL_BUILT_IN_CLASS (NODE) == BUILT_IN_NORMAL \
3236 && DECL_FUNCTION_CODE (NODE) == BUILT_IN_CONSTANT_P)
3237
3238 /* Nonzero for _DECL means that this decl appears in (or will appear
3239 in) as a member in a RECORD_TYPE or UNION_TYPE node. It is also for
3240 detecting circularity in case members are multiply defined. In the
3241 case of a VAR_DECL, it means that no definition has been seen, even
3242 if an initializer has been. */
3243 #define DECL_IN_AGGR_P(NODE) (DECL_LANG_FLAG_3 (NODE))
3244
3245 /* Nonzero for a VAR_DECL means that the variable's initialization (if
3246 any) has been processed. (In general, DECL_INITIALIZED_P is
3247 !DECL_EXTERNAL, but static data members may be initialized even if
3248 not defined.) */
3249 #define DECL_INITIALIZED_P(NODE) \
3250 (TREE_LANG_FLAG_1 (VAR_DECL_CHECK (NODE)))
3251
3252 /* Nonzero for a VAR_DECL iff an explicit initializer was provided
3253 or a non-trivial constructor is called. */
3254 #define DECL_NONTRIVIALLY_INITIALIZED_P(NODE) \
3255 (TREE_LANG_FLAG_6 (VAR_DECL_CHECK (NODE)))
3256
3257 /* Nonzero for a VAR_DECL that was initialized with a
3258 constant-expression. */
3259 #define DECL_INITIALIZED_BY_CONSTANT_EXPRESSION_P(NODE) \
3260 (TREE_LANG_FLAG_2 (VAR_DECL_CHECK (NODE)))
3261
3262 /* Nonzero if the DECL was initialized in the class definition itself,
3263 rather than outside the class. This is used for both static member
3264 VAR_DECLS, and FUNCTION_DECLS that are defined in the class. */
3265 #define DECL_INITIALIZED_IN_CLASS_P(DECL) \
3266 (DECL_LANG_SPECIFIC (VAR_OR_FUNCTION_DECL_CHECK (DECL)) \
3267 ->u.base.initialized_in_class)
3268
3269 /* Nonzero if the DECL is used in the sense of 3.2 [basic.def.odr].
3270 Only available for decls with DECL_LANG_SPECIFIC. */
3271 #define DECL_ODR_USED(DECL) \
3272 (DECL_LANG_SPECIFIC (VAR_OR_FUNCTION_DECL_CHECK (DECL)) \
3273 ->u.base.odr_used)
3274
3275 /* Nonzero for FUNCTION_DECL means that this is a friend that is
3276 either not pushed into a namespace/looked up in a class (because it
3277 is a dependent type, in an uninstantiated template), or it has
3278 /only/ been subject to hidden friend injection from one or more
3279 befriending classes. Once another decl matches, the flag is
3280 cleared. There are requirements on its default parms. */
3281 #define DECL_UNIQUE_FRIEND_P(NODE) \
3282 (DECL_LANG_SPECIFIC (FUNCTION_DECL_CHECK (NODE)) \
3283 ->u.base.friend_or_tls)
3284
3285 /* True of a TEMPLATE_DECL that is a template class friend. Such
3286 decls are not pushed until instantiated (as they may depend on
3287 parameters of the befriending class). DECL_CHAIN is the
3288 befriending class. */
3289 #define DECL_UNINSTANTIATED_TEMPLATE_FRIEND_P(NODE) \
3290 (DECL_LANG_FLAG_4 (TEMPLATE_DECL_CHECK (NODE)))
3291
3292 /* Nonzero if the thread-local variable was declared with __thread as
3293 opposed to thread_local. */
3294 #define DECL_GNU_TLS_P(NODE) \
3295 (DECL_LANG_SPECIFIC (VAR_DECL_CHECK (NODE)) \
3296 && DECL_LANG_SPECIFIC (NODE)->u.base.friend_or_tls)
3297 #define SET_DECL_GNU_TLS_P(NODE) \
3298 (retrofit_lang_decl (VAR_DECL_CHECK (NODE)), \
3299 DECL_LANG_SPECIFIC (NODE)->u.base.friend_or_tls = true)
3300
3301 /* A TREE_LIST of the types which have befriended this FUNCTION_DECL. */
3302 #define DECL_BEFRIENDING_CLASSES(NODE) \
3303 (LANG_DECL_FN_CHECK (NODE)->befriending_classes)
3304
3305 /* Nonzero for FUNCTION_DECL means that this decl is a static
3306 member function. */
3307 #define DECL_STATIC_FUNCTION_P(NODE) \
3308 (LANG_DECL_FN_CHECK (NODE)->static_function)
3309
3310 /* Nonzero for FUNCTION_DECL means that this decl is a non-static
3311 member function. */
3312 #define DECL_NONSTATIC_MEMBER_FUNCTION_P(NODE) \
3313 (TREE_CODE (TREE_TYPE (NODE)) == METHOD_TYPE)
3314
3315 /* Nonzero for FUNCTION_DECL means that this decl is a member function
3316 (static or non-static). */
3317 #define DECL_FUNCTION_MEMBER_P(NODE) \
3318 (DECL_NONSTATIC_MEMBER_FUNCTION_P (NODE) || DECL_STATIC_FUNCTION_P (NODE))
3319
3320 /* Nonzero for FUNCTION_DECL means that this member function
3321 has `this' as const X *const. */
3322 #define DECL_CONST_MEMFUNC_P(NODE) \
3323 (DECL_NONSTATIC_MEMBER_FUNCTION_P (NODE) \
3324 && CP_TYPE_CONST_P (TREE_TYPE (TREE_VALUE \
3325 (TYPE_ARG_TYPES (TREE_TYPE (NODE))))))
3326
3327 /* Nonzero for FUNCTION_DECL means that this member function
3328 has `this' as volatile X *const. */
3329 #define DECL_VOLATILE_MEMFUNC_P(NODE) \
3330 (DECL_NONSTATIC_MEMBER_FUNCTION_P (NODE) \
3331 && CP_TYPE_VOLATILE_P (TREE_TYPE (TREE_VALUE \
3332 (TYPE_ARG_TYPES (TREE_TYPE (NODE))))))
3333
3334 /* Nonzero for a DECL means that this member is a non-static member. */
3335 #define DECL_NONSTATIC_MEMBER_P(NODE) \
3336 (DECL_NONSTATIC_MEMBER_FUNCTION_P (NODE) \
3337 || TREE_CODE (NODE) == FIELD_DECL)
3338
3339 /* Nonzero for a FIELD_DECL means that this member object type
3340 is mutable. */
3341 #define DECL_MUTABLE_P(NODE) (DECL_LANG_FLAG_0 (FIELD_DECL_CHECK (NODE)))
3342
3343 /* Nonzero for _DECL means that this constructor or conversion function is
3344 non-converting. */
3345 #define DECL_NONCONVERTING_P(NODE) \
3346 (LANG_DECL_FN_CHECK (NODE)->nonconverting)
3347
3348 /* Nonzero for FUNCTION_DECL means that this member function is a pure
3349 virtual function. */
3350 #define DECL_PURE_VIRTUAL_P(NODE) \
3351 (LANG_DECL_FN_CHECK (NODE)->pure_virtual)
3352
3353 /* Nonzero for FUNCTION_DECL means that this member function (either
3354 a constructor or a conversion function) has an explicit specifier
3355 with a value-dependent expression. */
3356 #define DECL_HAS_DEPENDENT_EXPLICIT_SPEC_P(NODE) \
3357 (LANG_DECL_FN_CHECK (NODE)->has_dependent_explicit_spec_p)
3358
3359 /* Nonzero for a defaulted FUNCTION_DECL for which we haven't decided yet if
3360 it's deleted; we will decide in synthesize_method. */
3361 #define DECL_MAYBE_DELETED(NODE) \
3362 (LANG_DECL_FN_CHECK (NODE)->maybe_deleted)
3363
3364 /* True (in a FUNCTION_DECL) if NODE is a virtual function that is an
3365 invalid overrider for a function from a base class. Once we have
3366 complained about an invalid overrider we avoid complaining about it
3367 again. */
3368 #define DECL_INVALID_OVERRIDER_P(NODE) \
3369 (DECL_LANG_FLAG_4 (NODE))
3370
3371 /* True (in a FUNCTION_DECL) if NODE is a function declared with
3372 an override virt-specifier */
3373 #define DECL_OVERRIDE_P(NODE) (TREE_LANG_FLAG_0 (NODE))
3374
3375 /* The thunks associated with NODE, a FUNCTION_DECL. */
3376 #define DECL_THUNKS(NODE) \
3377 (DECL_VIRTUAL_P (NODE) ? LANG_DECL_FN_CHECK (NODE)->context : NULL_TREE)
3378
3379 /* Set DECL_THUNKS. */
3380 #define SET_DECL_THUNKS(NODE,THUNKS) \
3381 (LANG_DECL_FN_CHECK (NODE)->context = (THUNKS))
3382
3383 /* If NODE, a FUNCTION_DECL, is a C++11 inheriting constructor, then this
3384 is the constructor it inherits from. */
3385 #define DECL_INHERITED_CTOR(NODE) \
3386 (DECL_DECLARES_FUNCTION_P (NODE) && DECL_CONSTRUCTOR_P (NODE) \
3387 ? LANG_DECL_FN_CHECK (NODE)->context : NULL_TREE)
3388
3389 /* And this is the base that constructor comes from. */
3390 #define DECL_INHERITED_CTOR_BASE(NODE) \
3391 (DECL_INHERITED_CTOR (NODE) \
3392 ? DECL_CONTEXT (flag_new_inheriting_ctors \
3393 ? strip_inheriting_ctors (NODE) \
3394 : DECL_INHERITED_CTOR (NODE)) \
3395 : NULL_TREE)
3396
3397 /* Set the inherited base. */
3398 #define SET_DECL_INHERITED_CTOR(NODE,INH) \
3399 (LANG_DECL_FN_CHECK (NODE)->context = (INH))
3400
3401 /* Nonzero if NODE is a thunk, rather than an ordinary function. */
3402 #define DECL_THUNK_P(NODE) \
3403 (TREE_CODE (NODE) == FUNCTION_DECL \
3404 && DECL_LANG_SPECIFIC (NODE) \
3405 && LANG_DECL_FN_CHECK (NODE)->thunk_p)
3406
3407 /* Set DECL_THUNK_P for node. */
3408 #define SET_DECL_THUNK_P(NODE, THIS_ADJUSTING) \
3409 (LANG_DECL_FN_CHECK (NODE)->thunk_p = 1, \
3410 LANG_DECL_FN_CHECK (NODE)->this_thunk_p = (THIS_ADJUSTING))
3411
3412 /* Nonzero if NODE is a this pointer adjusting thunk. */
3413 #define DECL_THIS_THUNK_P(NODE) \
3414 (DECL_THUNK_P (NODE) && LANG_DECL_FN_CHECK (NODE)->this_thunk_p)
3415
3416 /* Nonzero if NODE is a result pointer adjusting thunk. */
3417 #define DECL_RESULT_THUNK_P(NODE) \
3418 (DECL_THUNK_P (NODE) && !LANG_DECL_FN_CHECK (NODE)->this_thunk_p)
3419
3420 /* Nonzero if NODE is a FUNCTION_DECL, but not a thunk. */
3421 #define DECL_NON_THUNK_FUNCTION_P(NODE) \
3422 (TREE_CODE (NODE) == FUNCTION_DECL && !DECL_THUNK_P (NODE))
3423
3424 /* Nonzero if NODE is `extern "C"'. */
3425 #define DECL_EXTERN_C_P(NODE) \
3426 (DECL_LANGUAGE (NODE) == lang_c)
3427
3428 /* Nonzero if NODE is an `extern "C"' function. */
3429 #define DECL_EXTERN_C_FUNCTION_P(NODE) \
3430 (DECL_NON_THUNK_FUNCTION_P (NODE) && DECL_EXTERN_C_P (NODE))
3431
3432 /* Non-zero if this variable is declared `constinit' specifier. */
3433 #define DECL_DECLARED_CONSTINIT_P(NODE) \
3434 (DECL_LANG_FLAG_7 (VAR_DECL_CHECK (NODE)))
3435
3436 /* True if DECL is declared 'constexpr'. */
3437 #define DECL_DECLARED_CONSTEXPR_P(DECL) \
3438 DECL_LANG_FLAG_8 (VAR_OR_FUNCTION_DECL_CHECK (STRIP_TEMPLATE (DECL)))
3439
3440 /* True if FNDECL is an immediate function. */
3441 #define DECL_IMMEDIATE_FUNCTION_P(NODE) \
3442 (DECL_LANG_SPECIFIC (FUNCTION_DECL_CHECK (STRIP_TEMPLATE (NODE))) \
3443 ? LANG_DECL_FN_CHECK (NODE)->immediate_fn_p \
3444 : false)
3445 #define SET_DECL_IMMEDIATE_FUNCTION_P(NODE) \
3446 (retrofit_lang_decl (FUNCTION_DECL_CHECK (NODE)), \
3447 LANG_DECL_FN_CHECK (NODE)->immediate_fn_p = true)
3448
3449 // True if NODE was declared as 'concept'. The flag implies that the
3450 // declaration is constexpr, that the declaration cannot be specialized or
3451 // refined, and that the result type must be convertible to bool.
3452 #define DECL_DECLARED_CONCEPT_P(NODE) \
3453 (DECL_LANG_SPECIFIC (NODE)->u.base.concept_p)
3454
3455 /* Nonzero if this DECL is the __PRETTY_FUNCTION__ variable in a
3456 template function. */
3457 #define DECL_PRETTY_FUNCTION_P(NODE) \
3458 (DECL_NAME (NODE) \
3459 && id_equal (DECL_NAME (NODE), "__PRETTY_FUNCTION__"))
3460
3461 /* For a DECL, true if it is __func__ or similar. */
3462 #define DECL_FNAME_P(NODE) \
3463 (VAR_P (NODE) && DECL_NAME (NODE) && DECL_ARTIFICIAL (NODE) \
3464 && DECL_HAS_VALUE_EXPR_P (NODE) \
3465 && (id_equal (DECL_NAME (NODE), "__PRETTY_FUNCTION__") \
3466 || id_equal (DECL_NAME (NODE), "__FUNCTION__") \
3467 || id_equal (DECL_NAME (NODE), "__func__")))
3468
3469 /* Nonzero if the variable was declared to be thread-local.
3470 We need a special C++ version of this test because the middle-end
3471 DECL_THREAD_LOCAL_P uses the symtab, so we can't use it for
3472 templates. */
3473 #define CP_DECL_THREAD_LOCAL_P(NODE) \
3474 (TREE_LANG_FLAG_0 (VAR_DECL_CHECK (NODE)))
3475
3476 /* The _TYPE context in which this _DECL appears. This field holds the
3477 class where a virtual function instance is actually defined. */
3478 #define DECL_CLASS_CONTEXT(NODE) \
3479 (DECL_CLASS_SCOPE_P (NODE) ? DECL_CONTEXT (NODE) : NULL_TREE)
3480
3481 /* For a non-member friend function, the class (if any) in which this
3482 friend was defined. For example, given:
3483
3484 struct S { friend void f () { ... } };
3485
3486 the DECL_FRIEND_CONTEXT for `f' will be `S'. */
3487 #define DECL_FRIEND_CONTEXT(NODE) \
3488 ((DECL_DECLARES_FUNCTION_P (NODE) && !DECL_VIRTUAL_P (NODE) \
3489 && !DECL_CONSTRUCTOR_P (NODE)) \
3490 ? LANG_DECL_FN_CHECK (NODE)->context \
3491 : NULL_TREE)
3492
3493 /* Set the DECL_FRIEND_CONTEXT for NODE to CONTEXT. */
3494 #define SET_DECL_FRIEND_CONTEXT(NODE, CONTEXT) \
3495 (LANG_DECL_FN_CHECK (NODE)->context = (CONTEXT))
3496
3497 #define CP_DECL_CONTEXT(NODE) \
3498 (!DECL_FILE_SCOPE_P (NODE) ? DECL_CONTEXT (NODE) : global_namespace)
3499 #define CP_TYPE_CONTEXT(NODE) \
3500 (!TYPE_FILE_SCOPE_P (NODE) ? TYPE_CONTEXT (NODE) : global_namespace)
3501 #define FROB_CONTEXT(NODE) \
3502 ((NODE) == global_namespace ? DECL_CONTEXT (NODE) : (NODE))
3503
3504 /* 1 iff NODE has namespace scope, including the global namespace. */
3505 #define DECL_NAMESPACE_SCOPE_P(NODE) \
3506 (!DECL_TEMPLATE_PARM_P (NODE) \
3507 && TREE_CODE (CP_DECL_CONTEXT (NODE)) == NAMESPACE_DECL)
3508
3509 #define TYPE_NAMESPACE_SCOPE_P(NODE) \
3510 (TREE_CODE (CP_TYPE_CONTEXT (NODE)) == NAMESPACE_DECL)
3511
3512 #define NAMESPACE_SCOPE_P(NODE) \
3513 ((DECL_P (NODE) && DECL_NAMESPACE_SCOPE_P (NODE)) \
3514 || (TYPE_P (NODE) && TYPE_NAMESPACE_SCOPE_P (NODE)))
3515
3516 /* 1 iff NODE is a class member. */
3517 #define DECL_CLASS_SCOPE_P(NODE) \
3518 (DECL_CONTEXT (NODE) && TYPE_P (DECL_CONTEXT (NODE)))
3519
3520 #define TYPE_CLASS_SCOPE_P(NODE) \
3521 (TYPE_CONTEXT (NODE) && TYPE_P (TYPE_CONTEXT (NODE)))
3522
3523 /* 1 iff NODE is function-local. */
3524 #define DECL_FUNCTION_SCOPE_P(NODE) \
3525 (DECL_CONTEXT (NODE) \
3526 && TREE_CODE (DECL_CONTEXT (NODE)) == FUNCTION_DECL)
3527
3528 #define TYPE_FUNCTION_SCOPE_P(NODE) \
3529 (TYPE_CONTEXT (NODE) && TREE_CODE (TYPE_CONTEXT (NODE)) == FUNCTION_DECL)
3530
3531 /* 1 iff VAR_DECL node NODE is a type-info decl. This flag is set for
3532 both the primary typeinfo object and the associated NTBS name. */
3533 #define DECL_TINFO_P(NODE) \
3534 TREE_LANG_FLAG_4 (TREE_CHECK2 (NODE,VAR_DECL,TYPE_DECL))
3535
3536 /* 1 iff VAR_DECL node NODE is virtual table or VTT. We forward to
3537 DECL_VIRTUAL_P from the common code, as that has the semantics we
3538 need. But we want a more descriptive name. */
3539 #define DECL_VTABLE_OR_VTT_P(NODE) DECL_VIRTUAL_P (VAR_DECL_CHECK (NODE))
3540
3541 /* 1 iff FUNCTION_TYPE or METHOD_TYPE has a ref-qualifier (either & or &&). */
3542 #define FUNCTION_REF_QUALIFIED(NODE) \
3543 TREE_LANG_FLAG_4 (FUNC_OR_METHOD_CHECK (NODE))
3544
3545 /* 1 iff FUNCTION_TYPE or METHOD_TYPE has &&-ref-qualifier. */
3546 #define FUNCTION_RVALUE_QUALIFIED(NODE) \
3547 TREE_LANG_FLAG_5 (FUNC_OR_METHOD_CHECK (NODE))
3548
3549 /* 1 iff NODE is function-local, but for types. */
3550 #define LOCAL_CLASS_P(NODE) \
3551 (decl_function_context (TYPE_MAIN_DECL (NODE)) != NULL_TREE)
3552
3553 /* The nesting depth of namespace, class or function. Makes is_ancestor much
3554 simpler. Only 8 bits available. */
3555 #define SCOPE_DEPTH(NODE) \
3556 (NAMESPACE_DECL_CHECK (NODE)->base.u.bits.address_space)
3557
3558 /* Whether the namepace is an inline namespace. */
3559 #define DECL_NAMESPACE_INLINE_P(NODE) \
3560 TREE_LANG_FLAG_0 (NAMESPACE_DECL_CHECK (NODE))
3561
3562 /* In a NAMESPACE_DECL, a vector of inline namespaces. */
3563 #define DECL_NAMESPACE_INLINEES(NODE) \
3564 (LANG_DECL_NS_CHECK (NODE)->inlinees)
3565
3566 /* Pointer to hash_map from IDENTIFIERS to DECLS */
3567 #define DECL_NAMESPACE_BINDINGS(NODE) \
3568 (LANG_DECL_NS_CHECK (NODE)->bindings)
3569
3570 /* In a NAMESPACE_DECL, points to the original namespace if this is
3571 a namespace alias. */
3572 #define DECL_NAMESPACE_ALIAS(NODE) \
3573 DECL_ABSTRACT_ORIGIN (NAMESPACE_DECL_CHECK (NODE))
3574 #define ORIGINAL_NAMESPACE(NODE) \
3575 (DECL_NAMESPACE_ALIAS (NODE) ? DECL_NAMESPACE_ALIAS (NODE) : (NODE))
3576
3577 /* Nonzero if NODE is the std namespace. */
3578 #define DECL_NAMESPACE_STD_P(NODE) \
3579 ((NODE) == std_node)
3580
3581 /* In a TREE_LIST in an attribute list, indicates that the attribute
3582 must be applied at instantiation time. */
3583 #define ATTR_IS_DEPENDENT(NODE) TREE_LANG_FLAG_0 (TREE_LIST_CHECK (NODE))
3584
3585 /* In a TREE_LIST in the argument of attribute abi_tag, indicates that the tag
3586 was inherited from a template parameter, not explicitly indicated. */
3587 #define ABI_TAG_IMPLICIT(NODE) TREE_LANG_FLAG_0 (TREE_LIST_CHECK (NODE))
3588
3589 /* In a TREE_LIST for a parameter-declaration-list, indicates that all the
3590 parameters in the list have declarators enclosed in (). */
3591 #define PARENTHESIZED_LIST_P(NODE) TREE_LANG_FLAG_0 (TREE_LIST_CHECK (NODE))
3592
3593 /* Non zero if this is a using decl for a dependent scope. */
3594 #define DECL_DEPENDENT_P(NODE) DECL_LANG_FLAG_0 (USING_DECL_CHECK (NODE))
3595
3596 /* The scope named in a using decl. */
3597 #define USING_DECL_SCOPE(NODE) DECL_RESULT_FLD (USING_DECL_CHECK (NODE))
3598
3599 /* The decls named by a using decl. */
3600 #define USING_DECL_DECLS(NODE) DECL_INITIAL (USING_DECL_CHECK (NODE))
3601
3602 /* Non zero if the using decl refers to a dependent type. */
3603 #define USING_DECL_TYPENAME_P(NODE) DECL_LANG_FLAG_1 (USING_DECL_CHECK (NODE))
3604
3605 /* True if member using decl NODE refers to a non-inherited NODE. */
3606 #define USING_DECL_UNRELATED_P(NODE) DECL_LANG_FLAG_2 (USING_DECL_CHECK (NODE))
3607
3608 /* True iff the CONST_DECL is a class-scope clone from C++20 using enum,
3609 created by handle_using_decl. */
3610 #define CONST_DECL_USING_P(NODE) \
3611 (TREE_CODE (NODE) == CONST_DECL \
3612 && TREE_TYPE (NODE) \
3613 && TREE_CODE (TREE_TYPE (NODE)) == ENUMERAL_TYPE \
3614 && DECL_CONTEXT (NODE) != TREE_TYPE (NODE))
3615
3616 /* In a FUNCTION_DECL, this is nonzero if this function was defined in
3617 the class definition. We have saved away the text of the function,
3618 but have not yet processed it. */
3619 #define DECL_PENDING_INLINE_P(NODE) \
3620 (LANG_DECL_FN_CHECK (NODE)->pending_inline_p)
3621
3622 /* If DECL_PENDING_INLINE_P holds, this is the saved text of the
3623 function. */
3624 #define DECL_PENDING_INLINE_INFO(NODE) \
3625 (LANG_DECL_FN_CHECK (NODE)->u.pending_inline_info)
3626
3627 /* Nonzero for TYPE_DECL means that it was written 'using name = type'. */
3628 #define TYPE_DECL_ALIAS_P(NODE) \
3629 DECL_LANG_FLAG_6 (TYPE_DECL_CHECK (NODE))
3630
3631 /* Nonzero for TEMPLATE_DECL means that it is a 'complex' alias template. */
3632 #define TEMPLATE_DECL_COMPLEX_ALIAS_P(NODE) \
3633 DECL_LANG_FLAG_2 (TEMPLATE_DECL_CHECK (NODE))
3634
3635 /* Nonzero for a type which is an alias for another type; i.e, a type
3636 which declaration was written 'using name-of-type =
3637 another-type'. */
3638 #define TYPE_ALIAS_P(NODE) \
3639 (TYPE_P (NODE) \
3640 && TYPE_NAME (NODE) \
3641 && TREE_CODE (TYPE_NAME (NODE)) == TYPE_DECL \
3642 && TYPE_DECL_ALIAS_P (TYPE_NAME (NODE)))
3643
3644 /* If non-NULL for a VAR_DECL, FUNCTION_DECL, TYPE_DECL, TEMPLATE_DECL,
3645 or CONCEPT_DECL, the entity is either a template specialization (if
3646 DECL_USE_TEMPLATE is nonzero) or the abstract instance of the
3647 template itself.
3648
3649 In either case, DECL_TEMPLATE_INFO is a TEMPLATE_INFO, whose
3650 TI_TEMPLATE is the TEMPLATE_DECL of which this entity is a
3651 specialization or abstract instance. The TI_ARGS is the
3652 template arguments used to specialize the template.
3653
3654 Consider:
3655
3656 template <typename T> struct S { friend void f(T) {} };
3657
3658 In this case, S<int>::f is, from the point of view of the compiler,
3659 an instantiation of a template -- but, from the point of view of
3660 the language, each instantiation of S results in a wholly unrelated
3661 global function f. In this case, DECL_TEMPLATE_INFO for S<int>::f
3662 will be non-NULL, but DECL_USE_TEMPLATE will be zero.
3663
3664 In a friend declaration, TI_TEMPLATE can be an overload set, or
3665 identifier. */
3666 #define DECL_TEMPLATE_INFO(NODE) \
3667 (DECL_LANG_SPECIFIC (TEMPLATE_INFO_DECL_CHECK (NODE)) \
3668 ->u.min.template_info)
3669
3670 /* For a lambda capture proxy, its captured variable. */
3671 #define DECL_CAPTURED_VARIABLE(NODE) \
3672 (LANG_DECL_MIN_CHECK (NODE)->access)
3673
3674 /* For a VAR_DECL, indicates that the variable is actually a
3675 non-static data member of anonymous union that has been promoted to
3676 variable status. */
3677 #define DECL_ANON_UNION_VAR_P(NODE) \
3678 (DECL_LANG_FLAG_4 (VAR_DECL_CHECK (NODE)))
3679
3680 /* Template information for a RECORD_TYPE or UNION_TYPE. */
3681 #define CLASSTYPE_TEMPLATE_INFO(NODE) \
3682 (TYPE_LANG_SLOT_1 (RECORD_OR_UNION_CHECK (NODE)))
3683
3684 /* Template information for a template template parameter. */
3685 #define TEMPLATE_TEMPLATE_PARM_TEMPLATE_INFO(NODE) \
3686 (TYPE_LANG_SLOT_1 (BOUND_TEMPLATE_TEMPLATE_PARM_TYPE_CHECK (NODE)))
3687
3688 /* Template information for an ENUMERAL_, RECORD_, UNION_TYPE, or
3689 BOUND_TEMPLATE_TEMPLATE_PARM type. This ignores any alias
3690 templateness of NODE. It'd be nice if this could unconditionally
3691 access the slot, rather than return NULL if given a
3692 non-templatable type. */
3693 #define TYPE_TEMPLATE_INFO(NODE) \
3694 (TREE_CODE (NODE) == ENUMERAL_TYPE \
3695 || TREE_CODE (NODE) == BOUND_TEMPLATE_TEMPLATE_PARM \
3696 || RECORD_OR_UNION_TYPE_P (NODE) \
3697 ? TYPE_LANG_SLOT_1 (NODE) : NULL_TREE)
3698
3699 /* Template information (if any) for an alias type. */
3700 #define TYPE_ALIAS_TEMPLATE_INFO(NODE) \
3701 (DECL_LANG_SPECIFIC (TYPE_NAME (NODE)) \
3702 ? DECL_TEMPLATE_INFO (TYPE_NAME (NODE)) \
3703 : NULL_TREE)
3704
3705 /* If NODE is a type alias, this accessor returns the template info
3706 for the alias template (if any). Otherwise behave as
3707 TYPE_TEMPLATE_INFO. */
3708 #define TYPE_TEMPLATE_INFO_MAYBE_ALIAS(NODE) \
3709 (typedef_variant_p (NODE) \
3710 ? TYPE_ALIAS_TEMPLATE_INFO (NODE) \
3711 : TYPE_TEMPLATE_INFO (NODE))
3712
3713 /* Set the template information for a non-alias n ENUMERAL_, RECORD_,
3714 or UNION_TYPE to VAL. ALIAS's are dealt with separately. */
3715 #define SET_TYPE_TEMPLATE_INFO(NODE, VAL) \
3716 (TREE_CODE (NODE) == ENUMERAL_TYPE \
3717 || (CLASS_TYPE_P (NODE) && !TYPE_ALIAS_P (NODE)) \
3718 ? (TYPE_LANG_SLOT_1 (NODE) = (VAL)) \
3719 : (DECL_TEMPLATE_INFO (TYPE_NAME (NODE)) = (VAL))) \
3720
3721 #define TI_TEMPLATE(NODE) \
3722 ((struct tree_template_info*)TEMPLATE_INFO_CHECK (NODE))->tmpl
3723 #define TI_ARGS(NODE) \
3724 ((struct tree_template_info*)TEMPLATE_INFO_CHECK (NODE))->args
3725 #define TI_PENDING_TEMPLATE_FLAG(NODE) \
3726 TREE_LANG_FLAG_1 (TEMPLATE_INFO_CHECK (NODE))
3727 /* For a given TREE_VEC containing a template argument list,
3728 this property contains the number of arguments that are not
3729 defaulted. */
3730 #define NON_DEFAULT_TEMPLATE_ARGS_COUNT(NODE) \
3731 TREE_CHAIN (TREE_VEC_CHECK (NODE))
3732
3733 /* Below are the setter and getter of the NON_DEFAULT_TEMPLATE_ARGS_COUNT
3734 property. */
3735 #define SET_NON_DEFAULT_TEMPLATE_ARGS_COUNT(NODE, INT_VALUE) \
3736 NON_DEFAULT_TEMPLATE_ARGS_COUNT(NODE) = build_int_cst (NULL_TREE, INT_VALUE)
3737 #if CHECKING_P
3738 #define GET_NON_DEFAULT_TEMPLATE_ARGS_COUNT(NODE) \
3739 int_cst_value (NON_DEFAULT_TEMPLATE_ARGS_COUNT (NODE))
3740 #else
3741 #define GET_NON_DEFAULT_TEMPLATE_ARGS_COUNT(NODE) \
3742 NON_DEFAULT_TEMPLATE_ARGS_COUNT (NODE) \
3743 ? int_cst_value (NON_DEFAULT_TEMPLATE_ARGS_COUNT (NODE)) \
3744 : TREE_VEC_LENGTH (INNERMOST_TEMPLATE_ARGS (NODE))
3745 #endif
3746
3747 /* The list of access checks that were deferred during parsing
3748 which need to be performed at template instantiation time.
3749
3750 FIXME this should be associated with the TEMPLATE_DECL, not the
3751 TEMPLATE_INFO. */
3752 #define TI_DEFERRED_ACCESS_CHECKS(NODE) \
3753 ((struct tree_template_info*)TEMPLATE_INFO_CHECK \
3754 (NODE))->deferred_access_checks
3755
3756 /* We use TREE_VECs to hold template arguments. If there is only one
3757 level of template arguments, then the TREE_VEC contains the
3758 arguments directly. If there is more than one level of template
3759 arguments, then each entry in the TREE_VEC is itself a TREE_VEC,
3760 containing the template arguments for a single level. The first
3761 entry in the outer TREE_VEC is the outermost level of template
3762 parameters; the last is the innermost.
3763
3764 It is incorrect to ever form a template argument vector containing
3765 only one level of arguments, but which is a TREE_VEC containing as
3766 its only entry the TREE_VEC for that level.
3767
3768 For each TREE_VEC containing the template arguments for a single
3769 level, it's possible to get or set the number of non defaulted
3770 template arguments by using the accessor macros
3771 GET_NON_DEFAULT_TEMPLATE_ARGS_COUNT or
3772 SET_NON_DEFAULT_TEMPLATE_ARGS_COUNT. */
3773
3774 /* Nonzero if the template arguments is actually a vector of vectors,
3775 rather than just a vector. */
3776 #define TMPL_ARGS_HAVE_MULTIPLE_LEVELS(NODE) \
3777 (NODE && TREE_VEC_LENGTH (NODE) && TREE_VEC_ELT (NODE, 0) \
3778 && TREE_CODE (TREE_VEC_ELT (NODE, 0)) == TREE_VEC)
3779
3780 /* The depth of a template argument vector. When called directly by
3781 the parser, we use a TREE_LIST rather than a TREE_VEC to represent
3782 template arguments. In that case, there is only one level of template
3783 arguments. We may even see NULL_TREE if there are 0 levels of
3784 template arguments, as in cp_parser_requires_expression. */
3785 #define TMPL_ARGS_DEPTH(NODE) \
3786 ((NODE) == NULL_TREE ? 0 \
3787 : TMPL_ARGS_HAVE_MULTIPLE_LEVELS (NODE) ? TREE_VEC_LENGTH (NODE) \
3788 : 1)
3789
3790 /* The LEVELth level of the template ARGS. The outermost level of
3791 args is level 1, not level 0. */
3792 #define TMPL_ARGS_LEVEL(ARGS, LEVEL) \
3793 (TMPL_ARGS_HAVE_MULTIPLE_LEVELS (ARGS) \
3794 ? TREE_VEC_ELT (ARGS, (LEVEL) - 1) : (ARGS))
3795
3796 /* Set the LEVELth level of the template ARGS to VAL. This macro does
3797 not work with single-level argument vectors. */
3798 #define SET_TMPL_ARGS_LEVEL(ARGS, LEVEL, VAL) \
3799 (TREE_VEC_ELT (ARGS, (LEVEL) - 1) = (VAL))
3800
3801 /* Accesses the IDXth parameter in the LEVELth level of the ARGS. */
3802 #define TMPL_ARG(ARGS, LEVEL, IDX) \
3803 (TREE_VEC_ELT (TMPL_ARGS_LEVEL (ARGS, LEVEL), IDX))
3804
3805 /* Given a single level of template arguments in NODE, return the
3806 number of arguments. */
3807 #define NUM_TMPL_ARGS(NODE) \
3808 (TREE_VEC_LENGTH (NODE))
3809
3810 /* Returns the innermost level of template arguments in ARGS. */
3811 #define INNERMOST_TEMPLATE_ARGS(NODE) \
3812 (get_innermost_template_args ((NODE), 1))
3813
3814 /* The number of levels of template parameters given by NODE. */
3815 #define TMPL_PARMS_DEPTH(NODE) \
3816 ((HOST_WIDE_INT) TREE_INT_CST_LOW (TREE_PURPOSE (NODE)))
3817
3818 /* The TEMPLATE_DECL instantiated or specialized by NODE. This
3819 TEMPLATE_DECL will be the immediate parent, not the most general
3820 template. For example, in:
3821
3822 template <class T> struct S { template <class U> void f(U); }
3823
3824 the FUNCTION_DECL for S<int>::f<double> will have, as its
3825 DECL_TI_TEMPLATE, `template <class U> S<int>::f<U>'.
3826
3827 As a special case, for a member friend template of a template
3828 class, this value will not be a TEMPLATE_DECL, but rather an
3829 IDENTIFIER_NODE or OVERLOAD indicating the name of the template and
3830 any explicit template arguments provided. For example, in:
3831
3832 template <class T> struct S { friend void f<int>(int, double); }
3833
3834 the DECL_TI_TEMPLATE will be an IDENTIFIER_NODE for `f' and the
3835 DECL_TI_ARGS will be {int}.
3836
3837 For a FIELD_DECL with a non-static data member initializer, this value
3838 is the FIELD_DECL it was instantiated from. */
3839 #define DECL_TI_TEMPLATE(NODE) TI_TEMPLATE (DECL_TEMPLATE_INFO (NODE))
3840
3841 /* The template arguments used to obtain this decl from the most
3842 general form of DECL_TI_TEMPLATE. For the example given for
3843 DECL_TI_TEMPLATE, the DECL_TI_ARGS will be {int, double}. These
3844 are always the full set of arguments required to instantiate this
3845 declaration from the most general template specialized here. */
3846 #define DECL_TI_ARGS(NODE) TI_ARGS (DECL_TEMPLATE_INFO (NODE))
3847
3848 /* The TEMPLATE_DECL associated with NODE, a class type. Even if NODE
3849 will be generated from a partial specialization, the TEMPLATE_DECL
3850 referred to here will be the original template. For example,
3851 given:
3852
3853 template <typename T> struct S {};
3854 template <typename T> struct S<T*> {};
3855
3856 the CLASSTYPE_TI_TEMPLATE for S<int*> will be S, not the S<T*>.
3857
3858 For a member class template, CLASSTYPE_TI_TEMPLATE always refers to the
3859 partial instantiation rather than the primary template. CLASSTYPE_TI_ARGS
3860 are for the primary template if the partial instantiation isn't
3861 specialized, or for the explicit specialization if it is, e.g.
3862
3863 template <class T> class C { template <class U> class D; }
3864 template <> template <class U> class C<int>::D; */
3865 #define CLASSTYPE_TI_TEMPLATE(NODE) TI_TEMPLATE (CLASSTYPE_TEMPLATE_INFO (NODE))
3866 #define CLASSTYPE_TI_ARGS(NODE) TI_ARGS (CLASSTYPE_TEMPLATE_INFO (NODE))
3867
3868 /* For a template instantiation TYPE, returns the TYPE corresponding
3869 to the primary template. Otherwise returns TYPE itself. */
3870 #define CLASSTYPE_PRIMARY_TEMPLATE_TYPE(TYPE) \
3871 ((CLASSTYPE_USE_TEMPLATE ((TYPE)) \
3872 && !CLASSTYPE_TEMPLATE_SPECIALIZATION ((TYPE))) \
3873 ? TREE_TYPE (DECL_TEMPLATE_RESULT (DECL_PRIMARY_TEMPLATE \
3874 (CLASSTYPE_TI_TEMPLATE ((TYPE))))) \
3875 : (TYPE))
3876
3877 /* Like CLASS_TI_TEMPLATE, but also works for ENUMERAL_TYPEs. */
3878 #define TYPE_TI_TEMPLATE(NODE) \
3879 (TI_TEMPLATE (TYPE_TEMPLATE_INFO (NODE)))
3880
3881 /* Like DECL_TI_ARGS, but for an ENUMERAL_, RECORD_, or UNION_TYPE. */
3882 #define TYPE_TI_ARGS(NODE) \
3883 (TI_ARGS (TYPE_TEMPLATE_INFO (NODE)))
3884
3885 #define INNERMOST_TEMPLATE_PARMS(NODE) TREE_VALUE (NODE)
3886
3887 /* Nonzero if NODE (a TEMPLATE_DECL) is a member template, in the
3888 sense of [temp.mem]. */
3889 #define DECL_MEMBER_TEMPLATE_P(NODE) \
3890 (DECL_LANG_FLAG_1 (TEMPLATE_DECL_CHECK (NODE)))
3891
3892 /* Nonzero if the NODE corresponds to the template parameters for a
3893 member template, whose inline definition is being processed after
3894 the class definition is complete. */
3895 #define TEMPLATE_PARMS_FOR_INLINE(NODE) TREE_LANG_FLAG_1 (NODE)
3896
3897 /* Determine if a declaration (PARM_DECL or FIELD_DECL) is a pack. */
3898 #define DECL_PACK_P(NODE) \
3899 (DECL_P (NODE) && PACK_EXPANSION_P (TREE_TYPE (NODE)))
3900
3901 /* Determines if NODE is an expansion of one or more parameter packs,
3902 e.g., a TYPE_PACK_EXPANSION or EXPR_PACK_EXPANSION. */
3903 #define PACK_EXPANSION_P(NODE) \
3904 (TREE_CODE (NODE) == TYPE_PACK_EXPANSION \
3905 || TREE_CODE (NODE) == EXPR_PACK_EXPANSION)
3906
3907 /* Extracts the type or expression pattern from a TYPE_PACK_EXPANSION or
3908 EXPR_PACK_EXPANSION. */
3909 #define PACK_EXPANSION_PATTERN(NODE) \
3910 (TREE_CODE (NODE) == TYPE_PACK_EXPANSION ? TREE_TYPE (NODE) \
3911 : TREE_OPERAND (NODE, 0))
3912
3913 /* Sets the type or expression pattern for a TYPE_PACK_EXPANSION or
3914 EXPR_PACK_EXPANSION. */
3915 #define SET_PACK_EXPANSION_PATTERN(NODE,VALUE) \
3916 if (TREE_CODE (NODE) == TYPE_PACK_EXPANSION) \
3917 TREE_TYPE (NODE) = VALUE; \
3918 else \
3919 TREE_OPERAND (NODE, 0) = VALUE
3920
3921 /* The list of parameter packs used in the PACK_EXPANSION_* node. The
3922 TREE_VALUE of each TREE_LIST contains the parameter packs. */
3923 #define PACK_EXPANSION_PARAMETER_PACKS(NODE) \
3924 *(TREE_CODE (NODE) == EXPR_PACK_EXPANSION \
3925 ? &TREE_OPERAND (NODE, 1) \
3926 : &TYPE_MIN_VALUE_RAW (TYPE_PACK_EXPANSION_CHECK (NODE)))
3927
3928 /* Any additional template args to be applied when substituting into
3929 the pattern, set by tsubst_pack_expansion for partial instantiations.
3930 If this is a TREE_LIST, the TREE_VALUE of the first element is the
3931 usual template argument TREE_VEC, and the TREE_PURPOSE of later elements
3932 are enclosing functions that provided function parameter packs we'll need
3933 to map appropriately. */
3934 #define PACK_EXPANSION_EXTRA_ARGS(NODE) \
3935 *(TREE_CODE (NODE) == TYPE_PACK_EXPANSION \
3936 ? &TYPE_MAX_VALUE_RAW (NODE) \
3937 : &TREE_OPERAND ((NODE), 2))
3938
3939 /* True iff this pack expansion is within a function context. */
3940 #define PACK_EXPANSION_LOCAL_P(NODE) TREE_LANG_FLAG_0 (NODE)
3941
3942 /* True iff this pack expansion is for sizeof.... */
3943 #define PACK_EXPANSION_SIZEOF_P(NODE) TREE_LANG_FLAG_1 (NODE)
3944
3945 /* True iff this pack expansion is for auto... in lambda init-capture. */
3946 #define PACK_EXPANSION_AUTO_P(NODE) TREE_LANG_FLAG_2 (NODE)
3947
3948 /* True if we must use PACK_EXPANSION_EXTRA_ARGS and avoid partial
3949 instantiation of this pack expansion. */
3950 #define PACK_EXPANSION_FORCE_EXTRA_ARGS_P(NODE) TREE_LANG_FLAG_3 (NODE)
3951
3952 /* True iff the wildcard can match a template parameter pack. */
3953 #define WILDCARD_PACK_P(NODE) TREE_LANG_FLAG_0 (NODE)
3954
3955 /* Determine if this is an argument pack. */
3956 #define ARGUMENT_PACK_P(NODE) \
3957 (TREE_CODE (NODE) == TYPE_ARGUMENT_PACK \
3958 || TREE_CODE (NODE) == NONTYPE_ARGUMENT_PACK)
3959
3960 /* The arguments stored in an argument pack. Arguments are stored in a
3961 TREE_VEC, which may have length zero. */
3962 #define ARGUMENT_PACK_ARGS(NODE) \
3963 (TREE_CODE (NODE) == TYPE_ARGUMENT_PACK? TREE_TYPE (NODE) \
3964 : TREE_OPERAND (NODE, 0))
3965
3966 /* Set the arguments stored in an argument pack. VALUE must be a
3967 TREE_VEC. */
3968 #define SET_ARGUMENT_PACK_ARGS(NODE,VALUE) \
3969 if (TREE_CODE (NODE) == TYPE_ARGUMENT_PACK) \
3970 TREE_TYPE (NODE) = VALUE; \
3971 else \
3972 TREE_OPERAND (NODE, 0) = VALUE
3973
3974 /* Whether the argument pack is "incomplete", meaning that more
3975 arguments can still be deduced. Incomplete argument packs are only
3976 used when the user has provided an explicit template argument list
3977 for a variadic function template. Some of the explicit template
3978 arguments will be placed into the beginning of the argument pack,
3979 but additional arguments might still be deduced. */
3980 #define ARGUMENT_PACK_INCOMPLETE_P(NODE) \
3981 TREE_ADDRESSABLE (ARGUMENT_PACK_ARGS (NODE))
3982
3983 /* When ARGUMENT_PACK_INCOMPLETE_P, stores the explicit template
3984 arguments used to fill this pack. */
3985 #define ARGUMENT_PACK_EXPLICIT_ARGS(NODE) \
3986 TREE_TYPE (ARGUMENT_PACK_ARGS (NODE))
3987
3988 /* In an ARGUMENT_PACK_SELECT, the argument pack from which an
3989 argument will be selected. */
3990 #define ARGUMENT_PACK_SELECT_FROM_PACK(NODE) \
3991 (((struct tree_argument_pack_select *)ARGUMENT_PACK_SELECT_CHECK (NODE))->argument_pack)
3992
3993 /* In an ARGUMENT_PACK_SELECT, the index of the argument we want to
3994 select. */
3995 #define ARGUMENT_PACK_SELECT_INDEX(NODE) \
3996 (((struct tree_argument_pack_select *)ARGUMENT_PACK_SELECT_CHECK (NODE))->index)
3997
3998 #define FOLD_EXPR_CHECK(NODE) \
3999 TREE_CHECK4 (NODE, UNARY_LEFT_FOLD_EXPR, UNARY_RIGHT_FOLD_EXPR, \
4000 BINARY_LEFT_FOLD_EXPR, BINARY_RIGHT_FOLD_EXPR)
4001
4002 #define BINARY_FOLD_EXPR_CHECK(NODE) \
4003 TREE_CHECK2 (NODE, BINARY_LEFT_FOLD_EXPR, BINARY_RIGHT_FOLD_EXPR)
4004
4005 /* True if NODE is UNARY_FOLD_EXPR or a BINARY_FOLD_EXPR */
4006 #define FOLD_EXPR_P(NODE) \
4007 (TREE_CODE (NODE) == UNARY_LEFT_FOLD_EXPR \
4008 || TREE_CODE (NODE) == UNARY_RIGHT_FOLD_EXPR \
4009 || TREE_CODE (NODE) == BINARY_LEFT_FOLD_EXPR \
4010 || TREE_CODE (NODE) == BINARY_RIGHT_FOLD_EXPR)
4011
4012 /* True when NODE is a fold over a compound assignment operator. */
4013 #define FOLD_EXPR_MODIFY_P(NODE) \
4014 TREE_LANG_FLAG_0 (FOLD_EXPR_CHECK (NODE))
4015
4016 /* An INTEGER_CST containing the tree code of the folded operator. */
4017 #define FOLD_EXPR_OP_RAW(NODE) \
4018 TREE_OPERAND (FOLD_EXPR_CHECK (NODE), 0)
4019
4020 /* The tree code of the folded operator. */
4021 #define FOLD_EXPR_OP(NODE) \
4022 ((enum tree_code) TREE_INT_CST_LOW (FOLD_EXPR_OP_RAW (NODE)))
4023
4024 /* The expression containing an unexpanded parameter pack. */
4025 #define FOLD_EXPR_PACK(NODE) \
4026 TREE_OPERAND (FOLD_EXPR_CHECK (NODE), 1)
4027
4028 /* In a binary fold expression, the argument with no unexpanded
4029 parameter packs. */
4030 #define FOLD_EXPR_INIT(NODE) \
4031 TREE_OPERAND (BINARY_FOLD_EXPR_CHECK (NODE), 2)
4032
4033 /* In a FUNCTION_DECL, the saved auto-return pattern. */
4034 #define DECL_SAVED_AUTO_RETURN_TYPE(NODE) \
4035 (LANG_DECL_FN_CHECK (FUNCTION_DECL_CHECK (NODE)) \
4036 ->u.saved_auto_return_type)
4037
4038 /* True if NODE is an implicit INDIRECT_REF from convert_from_reference. */
4039 #define REFERENCE_REF_P(NODE) \
4040 (INDIRECT_REF_P (NODE) \
4041 && TREE_TYPE (TREE_OPERAND (NODE, 0)) \
4042 && TYPE_REF_P (TREE_TYPE (TREE_OPERAND ((NODE), 0))))
4043
4044 /* True iff this represents an lvalue being treated as an rvalue during return
4045 or throw as per [class.copy.elision]. */
4046 #define IMPLICIT_RVALUE_P(NODE) \
4047 TREE_LANG_FLAG_3 (TREE_CHECK2 ((NODE), NON_LVALUE_EXPR, STATIC_CAST_EXPR))
4048
4049 #define NEW_EXPR_USE_GLOBAL(NODE) \
4050 TREE_LANG_FLAG_0 (NEW_EXPR_CHECK (NODE))
4051 #define DELETE_EXPR_USE_GLOBAL(NODE) \
4052 TREE_LANG_FLAG_0 (DELETE_EXPR_CHECK (NODE))
4053 #define DELETE_EXPR_USE_VEC(NODE) \
4054 TREE_LANG_FLAG_1 (DELETE_EXPR_CHECK (NODE))
4055
4056 #define CALL_OR_AGGR_INIT_CHECK(NODE) \
4057 TREE_CHECK2 ((NODE), CALL_EXPR, AGGR_INIT_EXPR)
4058
4059 /* In a CALL_EXPR appearing in a template, true if Koenig lookup
4060 should be performed at instantiation time. */
4061 #define KOENIG_LOOKUP_P(NODE) TREE_LANG_FLAG_0 (CALL_EXPR_CHECK (NODE))
4062
4063 /* True if the arguments to NODE should be evaluated in left-to-right
4064 order regardless of PUSH_ARGS_REVERSED. */
4065 #define CALL_EXPR_ORDERED_ARGS(NODE) \
4066 TREE_LANG_FLAG_3 (CALL_OR_AGGR_INIT_CHECK (NODE))
4067
4068 /* True if the arguments to NODE should be evaluated in right-to-left
4069 order regardless of PUSH_ARGS_REVERSED. */
4070 #define CALL_EXPR_REVERSE_ARGS(NODE) \
4071 TREE_LANG_FLAG_5 (CALL_OR_AGGR_INIT_CHECK (NODE))
4072
4073 /* True if CALL_EXPR was written as an operator expression, not a function
4074 call. */
4075 #define CALL_EXPR_OPERATOR_SYNTAX(NODE) \
4076 TREE_LANG_FLAG_6 (CALL_OR_AGGR_INIT_CHECK (NODE))
4077
4078 /* A TREE_LIST containing the result of phase 1 name lookup of the operator
4079 overloads that are pertinent to the dependent operator expression whose
4080 type is NODE. Each TREE_PURPOSE is an IDENTIFIER_NODE and TREE_VALUE is
4081 the corresponding (possibly empty) lookup result. The TREE_TYPE of the
4082 first TREE_LIST node points back to NODE. */
4083 #define DEPENDENT_OPERATOR_TYPE_SAVED_LOOKUPS(NODE) \
4084 TYPE_VALUES_RAW (DEPENDENT_OPERATOR_TYPE_CHECK (NODE))
4085
4086 /* Guarded helper for the above accessor macro that takes a (templated)
4087 operator expression instead of the type thereof. */
4088 inline tree
templated_operator_saved_lookups(tree t)4089 templated_operator_saved_lookups (tree t)
4090 {
4091 tree type = TREE_TYPE (EXPR_CHECK (t));
4092 if (type && TREE_CODE (type) == DEPENDENT_OPERATOR_TYPE)
4093 return DEPENDENT_OPERATOR_TYPE_SAVED_LOOKUPS (type);
4094 else
4095 return NULL_TREE;
4096 }
4097
4098 /* Indicates whether a string literal has been parenthesized. Such
4099 usages are disallowed in certain circumstances. */
4100
4101 #define PAREN_STRING_LITERAL_P(NODE) \
4102 TREE_LANG_FLAG_0 (STRING_CST_CHECK (NODE))
4103
4104 /* Indicates whether a COMPONENT_REF or a SCOPE_REF has been parenthesized, an
4105 INDIRECT_REF comes from parenthesizing a _DECL, or a PAREN_EXPR identifies a
4106 parenthesized initializer relevant for decltype(auto). Currently only set
4107 some of the time in C++14 mode. */
4108
4109 #define REF_PARENTHESIZED_P(NODE) \
4110 TREE_LANG_FLAG_2 (TREE_CHECK5 ((NODE), COMPONENT_REF, INDIRECT_REF, SCOPE_REF, VIEW_CONVERT_EXPR, PAREN_EXPR))
4111
4112 /* Nonzero if this AGGR_INIT_EXPR provides for initialization via a
4113 constructor call, rather than an ordinary function call. */
4114 #define AGGR_INIT_VIA_CTOR_P(NODE) \
4115 TREE_LANG_FLAG_0 (AGGR_INIT_EXPR_CHECK (NODE))
4116
4117 /* Nonzero if expanding this AGGR_INIT_EXPR should first zero-initialize
4118 the object. */
4119 #define AGGR_INIT_ZERO_FIRST(NODE) \
4120 TREE_LANG_FLAG_2 (AGGR_INIT_EXPR_CHECK (NODE))
4121
4122 /* Nonzero means that the call is the jump from a thunk to the
4123 thunked-to function. */
4124 #define AGGR_INIT_FROM_THUNK_P(NODE) \
4125 (AGGR_INIT_EXPR_CHECK (NODE)->base.protected_flag)
4126
4127 /* AGGR_INIT_EXPR accessors. These are equivalent to the CALL_EXPR
4128 accessors, except for AGGR_INIT_EXPR_SLOT (which takes the place of
4129 CALL_EXPR_STATIC_CHAIN). */
4130
4131 #define AGGR_INIT_EXPR_FN(NODE) TREE_OPERAND (AGGR_INIT_EXPR_CHECK (NODE), 1)
4132 #define AGGR_INIT_EXPR_SLOT(NODE) \
4133 TREE_OPERAND (AGGR_INIT_EXPR_CHECK (NODE), 2)
4134 #define AGGR_INIT_EXPR_ARG(NODE, I) \
4135 TREE_OPERAND (AGGR_INIT_EXPR_CHECK (NODE), (I) + 3)
4136 #define aggr_init_expr_nargs(NODE) (VL_EXP_OPERAND_LENGTH(NODE) - 3)
4137
4138 /* AGGR_INIT_EXPR_ARGP returns a pointer to the argument vector for NODE.
4139 We can't use &AGGR_INIT_EXPR_ARG (NODE, 0) because that will complain if
4140 the argument count is zero when checking is enabled. Instead, do
4141 the pointer arithmetic to advance past the 3 fixed operands in a
4142 AGGR_INIT_EXPR. That produces a valid pointer to just past the end of
4143 the operand array, even if it's not valid to dereference it. */
4144 #define AGGR_INIT_EXPR_ARGP(NODE) \
4145 (&(TREE_OPERAND (AGGR_INIT_EXPR_CHECK (NODE), 0)) + 3)
4146
4147 /* Abstract iterators for AGGR_INIT_EXPRs. */
4148
4149 /* Structure containing iterator state. */
4150 struct aggr_init_expr_arg_iterator {
4151 tree t; /* the aggr_init_expr */
4152 int n; /* argument count */
4153 int i; /* next argument index */
4154 };
4155
4156 /* Initialize the abstract argument list iterator object ITER with the
4157 arguments from AGGR_INIT_EXPR node EXP. */
4158 inline void
init_aggr_init_expr_arg_iterator(tree exp,aggr_init_expr_arg_iterator * iter)4159 init_aggr_init_expr_arg_iterator (tree exp,
4160 aggr_init_expr_arg_iterator *iter)
4161 {
4162 iter->t = exp;
4163 iter->n = aggr_init_expr_nargs (exp);
4164 iter->i = 0;
4165 }
4166
4167 /* Return the next argument from abstract argument list iterator object ITER,
4168 and advance its state. Return NULL_TREE if there are no more arguments. */
4169 inline tree
next_aggr_init_expr_arg(aggr_init_expr_arg_iterator * iter)4170 next_aggr_init_expr_arg (aggr_init_expr_arg_iterator *iter)
4171 {
4172 tree result;
4173 if (iter->i >= iter->n)
4174 return NULL_TREE;
4175 result = AGGR_INIT_EXPR_ARG (iter->t, iter->i);
4176 iter->i++;
4177 return result;
4178 }
4179
4180 /* Initialize the abstract argument list iterator object ITER, then advance
4181 past and return the first argument. Useful in for expressions, e.g.
4182 for (arg = first_aggr_init_expr_arg (exp, &iter); arg;
4183 arg = next_aggr_init_expr_arg (&iter)) */
4184 inline tree
first_aggr_init_expr_arg(tree exp,aggr_init_expr_arg_iterator * iter)4185 first_aggr_init_expr_arg (tree exp, aggr_init_expr_arg_iterator *iter)
4186 {
4187 init_aggr_init_expr_arg_iterator (exp, iter);
4188 return next_aggr_init_expr_arg (iter);
4189 }
4190
4191 /* Test whether there are more arguments in abstract argument list iterator
4192 ITER, without changing its state. */
4193 inline bool
more_aggr_init_expr_args_p(const aggr_init_expr_arg_iterator * iter)4194 more_aggr_init_expr_args_p (const aggr_init_expr_arg_iterator *iter)
4195 {
4196 return (iter->i < iter->n);
4197 }
4198
4199 /* Iterate through each argument ARG of AGGR_INIT_EXPR CALL, using variable
4200 ITER (of type aggr_init_expr_arg_iterator) to hold the iteration state. */
4201 #define FOR_EACH_AGGR_INIT_EXPR_ARG(arg, iter, call) \
4202 for ((arg) = first_aggr_init_expr_arg ((call), &(iter)); (arg); \
4203 (arg) = next_aggr_init_expr_arg (&(iter)))
4204
4205 /* VEC_INIT_EXPR accessors. */
4206 #define VEC_INIT_EXPR_SLOT(NODE) TREE_OPERAND (VEC_INIT_EXPR_CHECK (NODE), 0)
4207 #define VEC_INIT_EXPR_INIT(NODE) TREE_OPERAND (VEC_INIT_EXPR_CHECK (NODE), 1)
4208
4209 /* Indicates that a VEC_INIT_EXPR is a potential constant expression.
4210 Only set when the current function is constexpr. */
4211 #define VEC_INIT_EXPR_IS_CONSTEXPR(NODE) \
4212 TREE_LANG_FLAG_0 (VEC_INIT_EXPR_CHECK (NODE))
4213
4214 /* Indicates that a VEC_INIT_EXPR is expressing value-initialization. */
4215 #define VEC_INIT_EXPR_VALUE_INIT(NODE) \
4216 TREE_LANG_FLAG_1 (VEC_INIT_EXPR_CHECK (NODE))
4217
4218 /* If T is a VEC_INIT_EXPR, return it, possibly stripping a TARGET_EXPR
4219 wrapper. Otherwise, return null. */
4220 inline tree
get_vec_init_expr(tree t)4221 get_vec_init_expr (tree t)
4222 {
4223 if (t && TREE_CODE (t) == TARGET_EXPR)
4224 t = TARGET_EXPR_INITIAL (t);
4225 if (t && TREE_CODE (t) == VEC_INIT_EXPR)
4226 return t;
4227 return NULL_TREE;
4228 }
4229
4230 /* The condition under which this MUST_NOT_THROW_EXPR actually blocks
4231 exceptions. NULL_TREE means 'true'. */
4232 #define MUST_NOT_THROW_COND(NODE) \
4233 TREE_OPERAND (MUST_NOT_THROW_EXPR_CHECK (NODE), 1)
4234
4235 /* The TYPE_MAIN_DECL for a class template type is a TYPE_DECL, not a
4236 TEMPLATE_DECL. This macro determines whether or not a given class
4237 type is really a template type, as opposed to an instantiation or
4238 specialization of one. */
4239 #define CLASSTYPE_IS_TEMPLATE(NODE) \
4240 (CLASSTYPE_TEMPLATE_INFO (NODE) \
4241 && !CLASSTYPE_USE_TEMPLATE (NODE) \
4242 && PRIMARY_TEMPLATE_P (CLASSTYPE_TI_TEMPLATE (NODE)))
4243
4244 /* The name used by the user to name the typename type. Typically,
4245 this is an IDENTIFIER_NODE, and the same as the DECL_NAME on the
4246 corresponding TYPE_DECL. However, this may also be a
4247 TEMPLATE_ID_EXPR if we had something like `typename X::Y<T>'. */
4248 #define TYPENAME_TYPE_FULLNAME(NODE) \
4249 (TYPE_VALUES_RAW (TYPENAME_TYPE_CHECK (NODE)))
4250
4251 /* True if a TYPENAME_TYPE was declared as an "enum". */
4252 #define TYPENAME_IS_ENUM_P(NODE) \
4253 (TREE_LANG_FLAG_0 (TYPENAME_TYPE_CHECK (NODE)))
4254
4255 /* True if a TYPENAME_TYPE was declared as a "class", "struct", or
4256 "union". */
4257 #define TYPENAME_IS_CLASS_P(NODE) \
4258 (TREE_LANG_FLAG_1 (TYPENAME_TYPE_CHECK (NODE)))
4259
4260 /* True if a TYPENAME_TYPE is in the process of being resolved. */
4261 #define TYPENAME_IS_RESOLVING_P(NODE) \
4262 (TREE_LANG_FLAG_2 (TYPENAME_TYPE_CHECK (NODE)))
4263
4264 /* [class.virtual]
4265
4266 A class that declares or inherits a virtual function is called a
4267 polymorphic class. */
4268 #define TYPE_POLYMORPHIC_P(NODE) (TREE_LANG_FLAG_2 (NODE))
4269
4270 /* Nonzero if this class has a virtual function table pointer. */
4271 #define TYPE_CONTAINS_VPTR_P(NODE) \
4272 (TYPE_POLYMORPHIC_P (NODE) || CLASSTYPE_VBASECLASSES (NODE))
4273
4274 /* Nonzero if NODE is a FUNCTION_DECL or VARIABLE_DECL (for a decl
4275 with namespace scope) declared in a local scope. */
4276 #define DECL_LOCAL_DECL_P(NODE) \
4277 DECL_LANG_FLAG_0 (VAR_OR_FUNCTION_DECL_CHECK (NODE))
4278
4279 /* The namespace-scope decl a DECL_LOCAL_DECL_P aliases. */
4280 #define DECL_LOCAL_DECL_ALIAS(NODE) \
4281 DECL_ACCESS ((gcc_checking_assert (DECL_LOCAL_DECL_P (NODE)), NODE))
4282
4283 /* Nonzero if NODE is the target for genericization of 'return' stmts
4284 in constructors/destructors of targetm.cxx.cdtor_returns_this targets. */
4285 #define LABEL_DECL_CDTOR(NODE) \
4286 DECL_LANG_FLAG_2 (LABEL_DECL_CHECK (NODE))
4287
4288 /* True if NODE was declared with auto in its return type, but it has
4289 started compilation and so the return type might have been changed by
4290 return type deduction; its declared return type should be found in
4291 DECL_SAVED_AUTO_RETURN_TYPE (NODE). */
4292 #define FNDECL_USED_AUTO(NODE) \
4293 TREE_LANG_FLAG_2 (FUNCTION_DECL_CHECK (NODE))
4294
4295 /* True if NODE is needed for a manifestly constant-evaluated expression.
4296 This doesn't especially need to be a flag, since currently it's only
4297 used for error recovery; if we run out of function flags it could move
4298 to an attribute. */
4299 #define FNDECL_MANIFESTLY_CONST_EVALUATED(NODE) \
4300 TREE_LANG_FLAG_4 (FUNCTION_DECL_CHECK (NODE))
4301
4302 /* True for artificial decls added for OpenMP privatized non-static
4303 data members. */
4304 #define DECL_OMP_PRIVATIZED_MEMBER(NODE) \
4305 (DECL_LANG_SPECIFIC (VAR_DECL_CHECK (NODE))->u.base.anticipated_p)
4306
4307 /* Nonzero if NODE is an artificial FUNCTION_DECL for
4308 #pragma omp declare reduction. */
4309 #define DECL_OMP_DECLARE_REDUCTION_P(NODE) \
4310 (LANG_DECL_FN_CHECK (DECL_COMMON_CHECK (NODE))->omp_declare_reduction_p)
4311
4312 /* Nonzero if DECL has been declared threadprivate by
4313 #pragma omp threadprivate. */
4314 #define CP_DECL_THREADPRIVATE_P(DECL) \
4315 (DECL_LANG_SPECIFIC (VAR_DECL_CHECK (DECL))->u.base.threadprivate_or_deleted_p)
4316
4317 /* Nonzero if NODE is a VAR_DECL which has been declared inline. */
4318 #define DECL_VAR_DECLARED_INLINE_P(NODE) \
4319 (DECL_LANG_SPECIFIC (VAR_DECL_CHECK (NODE)) \
4320 ? DECL_LANG_SPECIFIC (NODE)->u.base.var_declared_inline_p \
4321 : false)
4322 #define SET_DECL_VAR_DECLARED_INLINE_P(NODE) \
4323 (DECL_LANG_SPECIFIC (VAR_DECL_CHECK (NODE))->u.base.var_declared_inline_p \
4324 = true)
4325
4326 /* True if NODE is a constant variable with a value-dependent initializer. */
4327 #define DECL_DEPENDENT_INIT_P(NODE) \
4328 (DECL_LANG_SPECIFIC (VAR_DECL_CHECK (NODE)) \
4329 && DECL_LANG_SPECIFIC (NODE)->u.base.dependent_init_p)
4330 #define SET_DECL_DEPENDENT_INIT_P(NODE, X) \
4331 (DECL_LANG_SPECIFIC (VAR_DECL_CHECK (NODE))->u.base.dependent_init_p = (X))
4332
4333 /* Nonzero if NODE is an artificial VAR_DECL for a C++17 structured binding
4334 declaration or one of VAR_DECLs for the user identifiers in it. */
4335 #define DECL_DECOMPOSITION_P(NODE) \
4336 (VAR_P (NODE) && DECL_LANG_SPECIFIC (NODE) \
4337 ? DECL_LANG_SPECIFIC (NODE)->u.base.selector == lds_decomp \
4338 : false)
4339
4340 /* The underlying artificial VAR_DECL for structured binding. */
4341 #define DECL_DECOMP_BASE(NODE) \
4342 (LANG_DECL_DECOMP_CHECK (NODE)->base)
4343
4344 /* Nonzero if NODE is an inline VAR_DECL. In C++17, static data members
4345 declared with constexpr specifier are implicitly inline variables. */
4346 #define DECL_INLINE_VAR_P(NODE) \
4347 (DECL_VAR_DECLARED_INLINE_P (NODE) \
4348 || (cxx_dialect >= cxx17 \
4349 && DECL_DECLARED_CONSTEXPR_P (NODE) \
4350 && DECL_CLASS_SCOPE_P (NODE)))
4351
4352 /* Nonzero if DECL was declared with '= delete'. */
4353 #define DECL_DELETED_FN(DECL) \
4354 (LANG_DECL_FN_CHECK (DECL)->min.base.threadprivate_or_deleted_p)
4355
4356 /* Nonzero if DECL was declared with '= default' (maybe implicitly). */
4357 #define DECL_DEFAULTED_FN(DECL) \
4358 (LANG_DECL_FN_CHECK (DECL)->defaulted_p)
4359
4360 /* Nonzero if DECL is explicitly defaulted in the class body. */
4361 #define DECL_DEFAULTED_IN_CLASS_P(DECL) \
4362 (DECL_DEFAULTED_FN (DECL) && DECL_INITIALIZED_IN_CLASS_P (DECL))
4363 /* Nonzero if DECL was defaulted outside the class body. */
4364 #define DECL_DEFAULTED_OUTSIDE_CLASS_P(DECL) \
4365 (DECL_DEFAULTED_FN (DECL) \
4366 && !(DECL_ARTIFICIAL (DECL) || DECL_INITIALIZED_IN_CLASS_P (DECL)))
4367
4368 /* Record whether a typedef for type `int' was actually `signed int'. */
4369 #define C_TYPEDEF_EXPLICITLY_SIGNED(EXP) DECL_LANG_FLAG_1 (EXP)
4370
4371 /* Returns nonzero if DECL has external linkage, as specified by the
4372 language standard. (This predicate may hold even when the
4373 corresponding entity is not actually given external linkage in the
4374 object file; see decl_linkage for details.) */
4375 #define DECL_EXTERNAL_LINKAGE_P(DECL) \
4376 (decl_linkage (DECL) == lk_external)
4377
4378 /* Keep these codes in ascending code order. */
4379
4380 #define INTEGRAL_CODE_P(CODE) \
4381 ((CODE) == ENUMERAL_TYPE \
4382 || (CODE) == BOOLEAN_TYPE \
4383 || (CODE) == INTEGER_TYPE)
4384
4385 /* [basic.fundamental]
4386
4387 Types bool, char, wchar_t, and the signed and unsigned integer types
4388 are collectively called integral types.
4389
4390 Note that INTEGRAL_TYPE_P, as defined in tree.h, allows enumeration
4391 types as well, which is incorrect in C++. Keep these checks in
4392 ascending code order. */
4393 #define CP_INTEGRAL_TYPE_P(TYPE) \
4394 (TREE_CODE (TYPE) == BOOLEAN_TYPE \
4395 || TREE_CODE (TYPE) == INTEGER_TYPE)
4396
4397 /* Returns true if TYPE is an integral or enumeration name. Keep
4398 these checks in ascending code order. */
4399 #define INTEGRAL_OR_ENUMERATION_TYPE_P(TYPE) \
4400 (TREE_CODE (TYPE) == ENUMERAL_TYPE || CP_INTEGRAL_TYPE_P (TYPE))
4401
4402 /* Returns true if TYPE is an integral or unscoped enumeration type. */
4403 #define INTEGRAL_OR_UNSCOPED_ENUMERATION_TYPE_P(TYPE) \
4404 (UNSCOPED_ENUM_P (TYPE) || CP_INTEGRAL_TYPE_P (TYPE))
4405
4406 /* True if the class type TYPE is a literal type. */
4407 #define CLASSTYPE_LITERAL_P(TYPE) \
4408 (LANG_TYPE_CLASS_CHECK (TYPE)->is_literal)
4409
4410 /* [basic.fundamental]
4411
4412 Integral and floating types are collectively called arithmetic
4413 types.
4414
4415 As a GNU extension, we also accept complex types.
4416
4417 Keep these checks in ascending code order. */
4418 #define ARITHMETIC_TYPE_P(TYPE) \
4419 (CP_INTEGRAL_TYPE_P (TYPE) \
4420 || TREE_CODE (TYPE) == REAL_TYPE \
4421 || TREE_CODE (TYPE) == COMPLEX_TYPE)
4422
4423 /* True iff TYPE is cv decltype(nullptr). */
4424 #define NULLPTR_TYPE_P(TYPE) (TREE_CODE (TYPE) == NULLPTR_TYPE)
4425
4426 /* [basic.types]
4427
4428 Arithmetic types, enumeration types, pointer types,
4429 pointer-to-member types, and std::nullptr_t are collectively called
4430 scalar types.
4431
4432 Keep these checks in ascending code order. */
4433 #define SCALAR_TYPE_P(TYPE) \
4434 (TYPE_PTRDATAMEM_P (TYPE) \
4435 || TREE_CODE (TYPE) == ENUMERAL_TYPE \
4436 || ARITHMETIC_TYPE_P (TYPE) \
4437 || TYPE_PTR_P (TYPE) \
4438 || TYPE_PTRMEMFUNC_P (TYPE) \
4439 || NULLPTR_TYPE_P (TYPE))
4440
4441 /* Determines whether this type is a C++0x scoped enumeration
4442 type. Scoped enumerations types are introduced via "enum class" or
4443 "enum struct", e.g.,
4444
4445 enum class Color {
4446 Red, Green, Blue
4447 };
4448
4449 Scoped enumeration types are different from normal (unscoped)
4450 enumeration types in several ways:
4451
4452 - The enumerators of a scoped enumeration type are only available
4453 within the scope of the enumeration type and not in the
4454 enclosing scope. For example, the Red color can be referred to
4455 with "Color::Red" but not "Red".
4456
4457 - Scoped enumerators and enumerations do not implicitly convert
4458 to integers or 'bool'.
4459
4460 - The underlying type of the enum is well-defined. */
4461 #define SCOPED_ENUM_P(TYPE) \
4462 (TREE_CODE (TYPE) == ENUMERAL_TYPE && ENUM_IS_SCOPED (TYPE))
4463
4464 /* Determine whether this is an unscoped enumeration type. */
4465 #define UNSCOPED_ENUM_P(TYPE) \
4466 (TREE_CODE (TYPE) == ENUMERAL_TYPE && !ENUM_IS_SCOPED (TYPE))
4467
4468 /* Set the flag indicating whether an ENUMERAL_TYPE is a C++0x scoped
4469 enumeration type (1) or a normal (unscoped) enumeration type
4470 (0). */
4471 #define SET_SCOPED_ENUM_P(TYPE, VAL) \
4472 (ENUM_IS_SCOPED (TYPE) = (VAL))
4473
4474 #define SET_OPAQUE_ENUM_P(TYPE, VAL) \
4475 (ENUM_IS_OPAQUE (TYPE) = (VAL))
4476
4477 #define OPAQUE_ENUM_P(TYPE) \
4478 (TREE_CODE (TYPE) == ENUMERAL_TYPE && ENUM_IS_OPAQUE (TYPE))
4479
4480 /* Determines whether an ENUMERAL_TYPE has an explicit
4481 underlying type. */
4482 #define ENUM_FIXED_UNDERLYING_TYPE_P(NODE) (TYPE_LANG_FLAG_5 (NODE))
4483
4484 /* Returns the underlying type of the given enumeration type. The
4485 underlying type is determined in different ways, depending on the
4486 properties of the enum:
4487
4488 - In C++0x, the underlying type can be explicitly specified, e.g.,
4489
4490 enum E1 : char { ... } // underlying type is char
4491
4492 - In a C++0x scoped enumeration, the underlying type is int
4493 unless otherwises specified:
4494
4495 enum class E2 { ... } // underlying type is int
4496
4497 - Otherwise, the underlying type is determined based on the
4498 values of the enumerators. In this case, the
4499 ENUM_UNDERLYING_TYPE will not be set until after the definition
4500 of the enumeration is completed by finish_enum. */
4501 #define ENUM_UNDERLYING_TYPE(TYPE) \
4502 TREE_TYPE (ENUMERAL_TYPE_CHECK (TYPE))
4503
4504 /* [dcl.init.aggr]
4505
4506 An aggregate is an array or a class with no user-provided
4507 constructors, no brace-or-equal-initializers for non-static data
4508 members, no private or protected non-static data members, no
4509 base classes, and no virtual functions.
4510
4511 As an extension, we also treat vectors as aggregates. Keep these
4512 checks in ascending code order. */
4513 #define CP_AGGREGATE_TYPE_P(TYPE) \
4514 (gnu_vector_type_p (TYPE) \
4515 || TREE_CODE (TYPE) == ARRAY_TYPE \
4516 || (CLASS_TYPE_P (TYPE) && COMPLETE_TYPE_P (TYPE) && !CLASSTYPE_NON_AGGREGATE (TYPE)))
4517
4518 /* Nonzero for a class type means that the class type has a
4519 user-declared constructor. */
4520 #define TYPE_HAS_USER_CONSTRUCTOR(NODE) (TYPE_LANG_FLAG_1 (NODE))
4521
4522 /* Nonzero means that the FUNCTION_TYPE or METHOD_TYPE has a
4523 late-specified return type. */
4524 #define TYPE_HAS_LATE_RETURN_TYPE(NODE) \
4525 (TYPE_LANG_FLAG_2 (FUNC_OR_METHOD_CHECK (NODE)))
4526
4527 /* When appearing in an INDIRECT_REF, it means that the tree structure
4528 underneath is actually a call to a constructor. This is needed
4529 when the constructor must initialize local storage (which can
4530 be automatically destroyed), rather than allowing it to allocate
4531 space from the heap.
4532
4533 When appearing in a SAVE_EXPR, it means that underneath
4534 is a call to a constructor.
4535
4536 When appearing in a CONSTRUCTOR, the expression is an unconverted
4537 compound literal.
4538
4539 When appearing in a FIELD_DECL, it means that this field
4540 has been duly initialized in its constructor. */
4541 #define TREE_HAS_CONSTRUCTOR(NODE) (TREE_LANG_FLAG_4 (NODE))
4542
4543 /* True if NODE is a brace-enclosed initializer. */
4544 #define BRACE_ENCLOSED_INITIALIZER_P(NODE) \
4545 (TREE_CODE (NODE) == CONSTRUCTOR && TREE_TYPE (NODE) == init_list_type_node)
4546
4547 /* True if NODE is a compound-literal, i.e., a brace-enclosed
4548 initializer cast to a particular type. This is mostly only set during
4549 template parsing; once the initializer has been digested into an actual
4550 value of the type, the expression is represented by a TARGET_EXPR. */
4551 #define COMPOUND_LITERAL_P(NODE) \
4552 (TREE_CODE (NODE) == CONSTRUCTOR && TREE_HAS_CONSTRUCTOR (NODE))
4553
4554 #define EMPTY_CONSTRUCTOR_P(NODE) (TREE_CODE (NODE) == CONSTRUCTOR \
4555 && vec_safe_is_empty(CONSTRUCTOR_ELTS(NODE))\
4556 && !TREE_HAS_CONSTRUCTOR (NODE))
4557
4558 /* True if NODE is a init-list used as a direct-initializer, i.e.
4559 B b{1,2}, not B b({1,2}) or B b = {1,2}. */
4560 #define CONSTRUCTOR_IS_DIRECT_INIT(NODE) (TREE_LANG_FLAG_0 (CONSTRUCTOR_CHECK (NODE)))
4561
4562 /* True if this CONSTRUCTOR is instantiation-dependent and needs to be
4563 substituted. */
4564 #define CONSTRUCTOR_IS_DEPENDENT(NODE) \
4565 (TREE_LANG_FLAG_1 (CONSTRUCTOR_CHECK (NODE)))
4566
4567 /* True if this CONSTRUCTOR should not be used as a variable initializer
4568 because it was loaded from a constexpr variable with mutable fields. */
4569 #define CONSTRUCTOR_MUTABLE_POISON(NODE) \
4570 (TREE_LANG_FLAG_2 (CONSTRUCTOR_CHECK (NODE)))
4571
4572 /* True if this typed CONSTRUCTOR represents C99 compound-literal syntax rather
4573 than C++11 functional cast syntax. */
4574 #define CONSTRUCTOR_C99_COMPOUND_LITERAL(NODE) \
4575 (TREE_LANG_FLAG_3 (CONSTRUCTOR_CHECK (NODE)))
4576
4577 /* True if this CONSTRUCTOR contains PLACEHOLDER_EXPRs referencing the
4578 CONSTRUCTOR's type not nested inside another CONSTRUCTOR marked with
4579 CONSTRUCTOR_PLACEHOLDER_BOUNDARY. */
4580 #define CONSTRUCTOR_PLACEHOLDER_BOUNDARY(NODE) \
4581 (TREE_LANG_FLAG_5 (CONSTRUCTOR_CHECK (NODE)))
4582
4583 #define DIRECT_LIST_INIT_P(NODE) \
4584 (BRACE_ENCLOSED_INITIALIZER_P (NODE) && CONSTRUCTOR_IS_DIRECT_INIT (NODE))
4585
4586 /* True if this is a designated initializer (when we allow initializer-clauses
4587 mixed with designated-initializer-clauses set whenever there is at least
4588 one designated-initializer-clause), or a C99 designator. */
4589 #define CONSTRUCTOR_IS_DESIGNATED_INIT(NODE) \
4590 (TREE_LANG_FLAG_6 (CONSTRUCTOR_CHECK (NODE)))
4591
4592 /* True if this CONSTRUCTOR comes from a parenthesized list of values, e.g.
4593 A(1, 2, 3). */
4594 #define CONSTRUCTOR_IS_PAREN_INIT(NODE) \
4595 (CONSTRUCTOR_CHECK(NODE)->base.private_flag)
4596
4597 /* True if reshape_init built this sub-CONSTRUCTOR to undo the brace elision
4598 of the original CONSTRUCTOR. This flag is used during C++20 aggregate
4599 CTAD. */
4600 #define CONSTRUCTOR_BRACES_ELIDED_P(NODE) \
4601 (CONSTRUCTOR_CHECK (NODE)->base.protected_flag)
4602
4603 /* True if NODE represents a conversion for direct-initialization in a
4604 template. Set by perform_implicit_conversion_flags. */
4605 #define IMPLICIT_CONV_EXPR_DIRECT_INIT(NODE) \
4606 (TREE_LANG_FLAG_0 (IMPLICIT_CONV_EXPR_CHECK (NODE)))
4607
4608 /* True if NODE represents a dependent conversion of a non-type template
4609 argument. Set by maybe_convert_nontype_argument. */
4610 #define IMPLICIT_CONV_EXPR_NONTYPE_ARG(NODE) \
4611 (TREE_LANG_FLAG_1 (IMPLICIT_CONV_EXPR_CHECK (NODE)))
4612
4613 /* True if NODE represents a conversion for braced-init-list in a
4614 template. Set by perform_implicit_conversion_flags. */
4615 #define IMPLICIT_CONV_EXPR_BRACED_INIT(NODE) \
4616 (TREE_LANG_FLAG_2 (IMPLICIT_CONV_EXPR_CHECK (NODE)))
4617
4618 /* Nonzero means that an object of this type cannot be initialized using
4619 an initializer list. */
4620 #define CLASSTYPE_NON_AGGREGATE(NODE) \
4621 (LANG_TYPE_CLASS_CHECK (NODE)->non_aggregate)
4622 #define TYPE_NON_AGGREGATE_CLASS(NODE) \
4623 (CLASS_TYPE_P (NODE) && CLASSTYPE_NON_AGGREGATE (NODE))
4624
4625 /* Nonzero if there is a non-trivial X::op=(cv X&) for this class. */
4626 #define TYPE_HAS_COMPLEX_COPY_ASSIGN(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->has_complex_copy_assign)
4627
4628 /* Nonzero if there is a non-trivial X::X(cv X&) for this class. */
4629 #define TYPE_HAS_COMPLEX_COPY_CTOR(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->has_complex_copy_ctor)
4630
4631 /* Nonzero if there is a non-trivial X::op=(X&&) for this class. */
4632 #define TYPE_HAS_COMPLEX_MOVE_ASSIGN(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->has_complex_move_assign)
4633
4634 /* Nonzero if there is a non-trivial X::X(X&&) for this class. */
4635 #define TYPE_HAS_COMPLEX_MOVE_CTOR(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->has_complex_move_ctor)
4636
4637 /* Nonzero if there is no trivial default constructor for this class. */
4638 #define TYPE_HAS_COMPLEX_DFLT(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->has_complex_dflt)
4639
4640 /* Nonzero if TYPE has a trivial destructor. From [class.dtor]:
4641
4642 A destructor is trivial if it is an implicitly declared
4643 destructor and if:
4644
4645 - all of the direct base classes of its class have trivial
4646 destructors,
4647
4648 - for all of the non-static data members of its class that are
4649 of class type (or array thereof), each such class has a
4650 trivial destructor. */
4651 #define TYPE_HAS_TRIVIAL_DESTRUCTOR(NODE) \
4652 (!TYPE_HAS_NONTRIVIAL_DESTRUCTOR (NODE))
4653
4654 /* Nonzero for _TYPE node means that this type does not have a trivial
4655 destructor. Therefore, destroying an object of this type will
4656 involve a call to a destructor. This can apply to objects of
4657 ARRAY_TYPE if the type of the elements needs a destructor. */
4658 #define TYPE_HAS_NONTRIVIAL_DESTRUCTOR(NODE) \
4659 (TYPE_LANG_FLAG_4 (NODE))
4660
4661 /* Nonzero for class type means that the default constructor is trivial. */
4662 #define TYPE_HAS_TRIVIAL_DFLT(NODE) \
4663 (TYPE_HAS_DEFAULT_CONSTRUCTOR (NODE) && ! TYPE_HAS_COMPLEX_DFLT (NODE))
4664
4665 /* Nonzero for class type means that copy initialization of this type can use
4666 a bitwise copy. */
4667 #define TYPE_HAS_TRIVIAL_COPY_CTOR(NODE) \
4668 (TYPE_HAS_COPY_CTOR (NODE) && ! TYPE_HAS_COMPLEX_COPY_CTOR (NODE))
4669
4670 /* Nonzero for class type means that assignment of this type can use
4671 a bitwise copy. */
4672 #define TYPE_HAS_TRIVIAL_COPY_ASSIGN(NODE) \
4673 (TYPE_HAS_COPY_ASSIGN (NODE) && ! TYPE_HAS_COMPLEX_COPY_ASSIGN (NODE))
4674
4675 /* Returns true if NODE is a pointer-to-data-member. */
4676 #define TYPE_PTRDATAMEM_P(NODE) \
4677 (TREE_CODE (NODE) == OFFSET_TYPE)
4678
4679 /* Returns true if NODE is a pointer. */
4680 #define TYPE_PTR_P(NODE) \
4681 (TREE_CODE (NODE) == POINTER_TYPE)
4682
4683 /* Returns true if NODE is a reference. */
4684 #define TYPE_REF_P(NODE) \
4685 (TREE_CODE (NODE) == REFERENCE_TYPE)
4686
4687 /* Returns true if NODE is a pointer or a reference. */
4688 #define INDIRECT_TYPE_P(NODE) \
4689 (TYPE_PTR_P (NODE) || TYPE_REF_P (NODE))
4690
4691 /* Returns true if NODE is an object type:
4692
4693 [basic.types]
4694
4695 An object type is a (possibly cv-qualified) type that is not a
4696 function type, not a reference type, and not a void type.
4697
4698 Keep these checks in ascending order, for speed. */
4699 #define TYPE_OBJ_P(NODE) \
4700 (!TYPE_REF_P (NODE) \
4701 && !VOID_TYPE_P (NODE) \
4702 && !FUNC_OR_METHOD_TYPE_P (NODE))
4703
4704 /* Returns true if NODE is a pointer to an object. Keep these checks
4705 in ascending tree code order. */
4706 #define TYPE_PTROB_P(NODE) \
4707 (TYPE_PTR_P (NODE) && TYPE_OBJ_P (TREE_TYPE (NODE)))
4708
4709 /* Returns true if NODE is a reference to an object. Keep these checks
4710 in ascending tree code order. */
4711 #define TYPE_REF_OBJ_P(NODE) \
4712 (TYPE_REF_P (NODE) && TYPE_OBJ_P (TREE_TYPE (NODE)))
4713
4714 /* Returns true if NODE is a pointer to an object, or a pointer to
4715 void. Keep these checks in ascending tree code order. */
4716 #define TYPE_PTROBV_P(NODE) \
4717 (TYPE_PTR_P (NODE) \
4718 && !FUNC_OR_METHOD_TYPE_P (TREE_TYPE (NODE)))
4719
4720 /* Returns true if NODE is a pointer to function type. */
4721 #define TYPE_PTRFN_P(NODE) \
4722 (TYPE_PTR_P (NODE) \
4723 && TREE_CODE (TREE_TYPE (NODE)) == FUNCTION_TYPE)
4724
4725 /* Returns true if NODE is a reference to function type. */
4726 #define TYPE_REFFN_P(NODE) \
4727 (TYPE_REF_P (NODE) \
4728 && TREE_CODE (TREE_TYPE (NODE)) == FUNCTION_TYPE)
4729
4730 /* Returns true if NODE is a pointer to member function type. */
4731 #define TYPE_PTRMEMFUNC_P(NODE) \
4732 (TREE_CODE (NODE) == RECORD_TYPE \
4733 && TYPE_PTRMEMFUNC_FLAG (NODE))
4734
4735 #define TYPE_PTRMEMFUNC_FLAG(NODE) \
4736 (TYPE_LANG_FLAG_2 (RECORD_TYPE_CHECK (NODE)))
4737
4738 /* Returns true if NODE is a pointer-to-member. */
4739 #define TYPE_PTRMEM_P(NODE) \
4740 (TYPE_PTRDATAMEM_P (NODE) || TYPE_PTRMEMFUNC_P (NODE))
4741
4742 /* Returns true if NODE is a pointer or a pointer-to-member. */
4743 #define TYPE_PTR_OR_PTRMEM_P(NODE) \
4744 (TYPE_PTR_P (NODE) || TYPE_PTRMEM_P (NODE))
4745
4746 /* Indicates when overload resolution may resolve to a pointer to
4747 member function. [expr.unary.op]/3 */
4748 #define PTRMEM_OK_P(NODE) \
4749 TREE_LANG_FLAG_0 (TREE_CHECK3 ((NODE), ADDR_EXPR, OFFSET_REF, SCOPE_REF))
4750
4751 /* Get the POINTER_TYPE to the METHOD_TYPE associated with this
4752 pointer to member function. TYPE_PTRMEMFUNC_P _must_ be true,
4753 before using this macro. */
4754 #define TYPE_PTRMEMFUNC_FN_TYPE(NODE) \
4755 (cp_build_qualified_type (TREE_TYPE (TYPE_FIELDS (NODE)),\
4756 cp_type_quals (NODE)))
4757
4758 /* As above, but can be used in places that want an lvalue at the expense
4759 of not necessarily having the correct cv-qualifiers. */
4760 #define TYPE_PTRMEMFUNC_FN_TYPE_RAW(NODE) \
4761 (TREE_TYPE (TYPE_FIELDS (NODE)))
4762
4763 /* Returns `A' for a type like `int (A::*)(double)' */
4764 #define TYPE_PTRMEMFUNC_OBJECT_TYPE(NODE) \
4765 TYPE_METHOD_BASETYPE (TREE_TYPE (TYPE_PTRMEMFUNC_FN_TYPE (NODE)))
4766
4767 /* The canonical internal RECORD_TYPE from the POINTER_TYPE to
4768 METHOD_TYPE. */
4769 #define TYPE_PTRMEMFUNC_TYPE(NODE) \
4770 TYPE_LANG_SLOT_1 (NODE)
4771
4772 /* For a pointer-to-member type of the form `T X::*', this is `X'.
4773 For a type like `void (X::*)() const', this type is `X', not `const
4774 X'. To get at the `const X' you have to look at the
4775 TYPE_PTRMEM_POINTED_TO_TYPE; there, the first parameter will have
4776 type `const X*'. */
4777 #define TYPE_PTRMEM_CLASS_TYPE(NODE) \
4778 (TYPE_PTRDATAMEM_P (NODE) \
4779 ? TYPE_OFFSET_BASETYPE (NODE) \
4780 : TYPE_PTRMEMFUNC_OBJECT_TYPE (NODE))
4781
4782 /* For a pointer-to-member type of the form `T X::*', this is `T'. */
4783 #define TYPE_PTRMEM_POINTED_TO_TYPE(NODE) \
4784 (TYPE_PTRDATAMEM_P (NODE) \
4785 ? TREE_TYPE (NODE) \
4786 : TREE_TYPE (TYPE_PTRMEMFUNC_FN_TYPE (NODE)))
4787
4788 /* For a pointer-to-member constant `X::Y' this is the RECORD_TYPE for
4789 `X'. */
4790 #define PTRMEM_CST_CLASS(NODE) \
4791 TYPE_PTRMEM_CLASS_TYPE (TREE_TYPE (PTRMEM_CST_CHECK (NODE)))
4792
4793 /* For a pointer-to-member constant `X::Y' this is the _DECL for
4794 `Y'. */
4795 #define PTRMEM_CST_MEMBER(NODE) \
4796 (((ptrmem_cst_t)PTRMEM_CST_CHECK (NODE))->member)
4797
4798 /* For a pointer-to-member constant `X::Y' this is a location where
4799 the address of the member has been taken. */
4800 #define PTRMEM_CST_LOCATION(NODE) \
4801 (((ptrmem_cst_t)PTRMEM_CST_CHECK (NODE))->locus)
4802
4803 /* The expression in question for a TYPEOF_TYPE. */
4804 #define TYPEOF_TYPE_EXPR(NODE) (TYPE_VALUES_RAW (TYPEOF_TYPE_CHECK (NODE)))
4805
4806 /* The type in question for an UNDERLYING_TYPE. */
4807 #define UNDERLYING_TYPE_TYPE(NODE) \
4808 (TYPE_VALUES_RAW (UNDERLYING_TYPE_CHECK (NODE)))
4809
4810 /* The type in question for BASES. */
4811 #define BASES_TYPE(NODE) \
4812 (TYPE_VALUES_RAW (BASES_CHECK (NODE)))
4813
4814 #define BASES_DIRECT(NODE) \
4815 TREE_LANG_FLAG_0 (BASES_CHECK (NODE))
4816
4817 /* The expression in question for a DECLTYPE_TYPE. */
4818 #define DECLTYPE_TYPE_EXPR(NODE) (TYPE_VALUES_RAW (DECLTYPE_TYPE_CHECK (NODE)))
4819
4820 /* Whether the DECLTYPE_TYPE_EXPR of NODE was originally parsed as an
4821 id-expression or a member-access expression. When false, it was
4822 parsed as a full expression. */
4823 #define DECLTYPE_TYPE_ID_EXPR_OR_MEMBER_ACCESS_P(NODE) \
4824 (DECLTYPE_TYPE_CHECK (NODE))->type_common.string_flag
4825
4826 /* These flags indicate that we want different semantics from normal
4827 decltype: lambda capture just drops references,
4828 lambda proxies look through implicit dereference. */
4829 #define DECLTYPE_FOR_LAMBDA_CAPTURE(NODE) \
4830 TREE_LANG_FLAG_0 (DECLTYPE_TYPE_CHECK (NODE))
4831 #define DECLTYPE_FOR_LAMBDA_PROXY(NODE) \
4832 TREE_LANG_FLAG_2 (DECLTYPE_TYPE_CHECK (NODE))
4833 #define DECLTYPE_FOR_REF_CAPTURE(NODE) \
4834 TREE_LANG_FLAG_3 (DECLTYPE_TYPE_CHECK (NODE))
4835
4836 /* Nonzero for VAR_DECL and FUNCTION_DECL node means that `extern' was
4837 specified in its declaration. This can also be set for an
4838 erroneously declared PARM_DECL. */
4839 #define DECL_THIS_EXTERN(NODE) \
4840 DECL_LANG_FLAG_2 (VAR_FUNCTION_OR_PARM_DECL_CHECK (NODE))
4841
4842 /* Nonzero for VAR_DECL and FUNCTION_DECL node means that `static' was
4843 specified in its declaration. This can also be set for an
4844 erroneously declared PARM_DECL. */
4845 #define DECL_THIS_STATIC(NODE) \
4846 DECL_LANG_FLAG_6 (VAR_FUNCTION_OR_PARM_DECL_CHECK (NODE))
4847
4848 /* Nonzero for FIELD_DECL node means that this field is a lambda capture
4849 field for an array of runtime bound. */
4850 #define DECL_VLA_CAPTURE_P(NODE) \
4851 DECL_LANG_FLAG_1 (FIELD_DECL_CHECK (NODE))
4852
4853 /* Nonzero for PARM_DECL node means that this is an array function
4854 parameter, i.e, a[] rather than *a. */
4855 #define DECL_ARRAY_PARAMETER_P(NODE) \
4856 DECL_LANG_FLAG_1 (PARM_DECL_CHECK (NODE))
4857
4858 /* Nonzero for a FIELD_DECL who's NSMDI is currently being
4859 instantiated. */
4860 #define DECL_INSTANTIATING_NSDMI_P(NODE) \
4861 DECL_LANG_FLAG_2 (FIELD_DECL_CHECK (NODE))
4862
4863 /* Nonzero for FIELD_DECL node means that this field is a base class
4864 of the parent object, as opposed to a member field. */
4865 #define DECL_FIELD_IS_BASE(NODE) \
4866 DECL_LANG_FLAG_6 (FIELD_DECL_CHECK (NODE))
4867
4868 /* Nonzero for FIELD_DECL node means that this field is a simple (no
4869 explicit initializer) lambda capture field, making it invisible to
4870 name lookup in unevaluated contexts. */
4871 #define DECL_NORMAL_CAPTURE_P(NODE) \
4872 DECL_LANG_FLAG_7 (FIELD_DECL_CHECK (NODE))
4873
4874 /* Nonzero if TYPE is an anonymous union or struct type. We have to use a
4875 flag for this because "A union for which objects or pointers are
4876 declared is not an anonymous union" [class.union]. */
4877 #define ANON_AGGR_TYPE_P(NODE) \
4878 (CLASS_TYPE_P (NODE) && LANG_TYPE_CLASS_CHECK (NODE)->anon_aggr)
4879 #define SET_ANON_AGGR_TYPE_P(NODE) \
4880 (LANG_TYPE_CLASS_CHECK (NODE)->anon_aggr = 1)
4881
4882 /* Nonzero if TYPE is an anonymous union type. */
4883 #define ANON_UNION_TYPE_P(NODE) \
4884 (TREE_CODE (NODE) == UNION_TYPE && ANON_AGGR_TYPE_P (NODE))
4885
4886 /* For an ANON_AGGR_TYPE_P the single FIELD_DECL it is used with. */
4887 #define ANON_AGGR_TYPE_FIELD(NODE) \
4888 (LANG_TYPE_CLASS_CHECK (NODE)->typeinfo_var)
4889
4890 /* Define fields and accessors for nodes representing declared names. */
4891
4892 /* True if TYPE is an unnamed structured type with a typedef for
4893 linkage purposes. In that case TYPE_NAME and TYPE_STUB_DECL of the
4894 MAIN-VARIANT are different. */
4895 #define TYPE_WAS_UNNAMED(NODE) \
4896 (TYPE_NAME (TYPE_MAIN_VARIANT (NODE)) \
4897 != TYPE_STUB_DECL (TYPE_MAIN_VARIANT (NODE)))
4898
4899 /* C++: all of these are overloaded! These apply only to TYPE_DECLs. */
4900
4901 /* The format of each node in the DECL_FRIENDLIST is as follows:
4902
4903 The TREE_PURPOSE will be the name of a function, i.e., an
4904 IDENTIFIER_NODE. The TREE_VALUE will be itself a TREE_LIST, whose
4905 TREE_VALUEs are friends with the given name. */
4906 #define DECL_FRIENDLIST(NODE) (DECL_INITIAL (NODE))
4907 #define FRIEND_NAME(LIST) (TREE_PURPOSE (LIST))
4908 #define FRIEND_DECLS(LIST) (TREE_VALUE (LIST))
4909
4910 /* The DECL_ACCESS, if non-NULL, is a TREE_LIST. The TREE_PURPOSE of
4911 each node is a type; the TREE_VALUE is the access granted for this
4912 DECL in that type. The DECL_ACCESS is set by access declarations.
4913 For example, if a member that would normally be public in a
4914 derived class is made protected, then the derived class and the
4915 protected_access_node will appear in the DECL_ACCESS for the node. */
4916 #define DECL_ACCESS(NODE) (LANG_DECL_MIN_CHECK (NODE)->access)
4917
4918 /* Nonzero if the FUNCTION_DECL is a global constructor. */
4919 #define DECL_GLOBAL_CTOR_P(NODE) \
4920 (LANG_DECL_FN_CHECK (NODE)->global_ctor_p)
4921
4922 /* Nonzero if the FUNCTION_DECL is a global destructor. */
4923 #define DECL_GLOBAL_DTOR_P(NODE) \
4924 (LANG_DECL_FN_CHECK (NODE)->global_dtor_p)
4925
4926 /* Accessor macros for C++ template decl nodes. */
4927
4928 /* The DECL_TEMPLATE_PARMS are a list. The TREE_PURPOSE of each node
4929 is a INT_CST whose TREE_INT_CST_LOW indicates the level of the
4930 template parameters, with 1 being the outermost set of template
4931 parameters. The TREE_VALUE is a vector, whose elements are the
4932 template parameters at each level. Each element in the vector is a
4933 TREE_LIST, whose TREE_VALUE is a PARM_DECL (if the parameter is a
4934 non-type parameter), or a TYPE_DECL (if the parameter is a type
4935 parameter) or a TEMPLATE_DECL (if the parameter is a template
4936 parameter). The TREE_PURPOSE is the default value, if any. The
4937 TEMPLATE_PARM_INDEX for the parameter is available as the
4938 DECL_INITIAL (for a PARM_DECL) or as the TREE_TYPE (for a
4939 TYPE_DECL).
4940
4941 FIXME: CONST_CAST_TREE is a hack that hopefully will go away after
4942 tree is converted to C++ class hiearchy. */
4943 #define DECL_TEMPLATE_PARMS(NODE) \
4944 ((struct tree_template_decl *)CONST_CAST_TREE (TEMPLATE_DECL_CHECK (NODE)))->arguments
4945 #define DECL_INNERMOST_TEMPLATE_PARMS(NODE) \
4946 INNERMOST_TEMPLATE_PARMS (DECL_TEMPLATE_PARMS (NODE))
4947 #define DECL_NTPARMS(NODE) \
4948 TREE_VEC_LENGTH (DECL_INNERMOST_TEMPLATE_PARMS (NODE))
4949 /* For function, method, class-data templates.
4950
4951 FIXME: CONST_CAST_TREE is a hack that hopefully will go away after
4952 tree is converted to C++ class hiearchy. */
4953 #define DECL_TEMPLATE_RESULT(NODE) \
4954 ((struct tree_template_decl *)CONST_CAST_TREE(TEMPLATE_DECL_CHECK (NODE)))->result
4955 /* For a function template at namespace scope, DECL_TEMPLATE_INSTANTIATIONS
4956 lists all instantiations and specializations of the function so that
4957 tsubst_friend_function can reassign them to another template if we find
4958 that the namespace-scope template is really a partial instantiation of a
4959 friend template.
4960
4961 For a class template the DECL_TEMPLATE_INSTANTIATIONS lists holds
4962 all instantiations and specializations of the class type, including
4963 partial instantiations and partial specializations, so that if we
4964 explicitly specialize a partial instantiation we can walk the list
4965 in maybe_process_partial_specialization and reassign them or complain
4966 as appropriate.
4967
4968 In both cases, the TREE_PURPOSE of each node contains the arguments
4969 used; the TREE_VALUE contains the generated variable. The template
4970 arguments are always complete. For example, given:
4971
4972 template <class T> struct S1 {
4973 template <class U> struct S2 {};
4974 template <class U> struct S2<U*> {};
4975 };
4976
4977 the record for the partial specialization will contain, as its
4978 argument list, { {T}, {U*} }, and will be on the
4979 DECL_TEMPLATE_INSTANTIATIONS list for `template <class T> template
4980 <class U> struct S1<T>::S2'.
4981
4982 This list is not used for other templates. */
4983 #define DECL_TEMPLATE_INSTANTIATIONS(NODE) \
4984 DECL_SIZE_UNIT (TEMPLATE_DECL_CHECK (NODE))
4985
4986 /* For a class template, this list contains the partial
4987 specializations of this template. (Full specializations are not
4988 recorded on this list.) The TREE_PURPOSE holds the arguments used
4989 in the partial specialization (e.g., for `template <class T> struct
4990 S<T*, int>' this will be `T*, int'.) The arguments will also include
4991 any outer template arguments. The TREE_VALUE holds the TEMPLATE_DECL
4992 for the partial specialization. The TREE_TYPE is the _TYPE node for
4993 the partial specialization.
4994
4995 This list is not used for other templates. */
4996 #define DECL_TEMPLATE_SPECIALIZATIONS(NODE) \
4997 DECL_SIZE (TEMPLATE_DECL_CHECK (NODE))
4998
4999 /* Nonzero for a DECL which is actually a template parameter. Keep
5000 these checks in ascending tree code order. */
5001 #define DECL_TEMPLATE_PARM_P(NODE) \
5002 (DECL_LANG_FLAG_0 (NODE) \
5003 && (TREE_CODE (NODE) == CONST_DECL \
5004 || TREE_CODE (NODE) == PARM_DECL \
5005 || TREE_CODE (NODE) == TYPE_DECL \
5006 || TREE_CODE (NODE) == TEMPLATE_DECL))
5007
5008 /* Nonzero for a raw template parameter node. */
5009 #define TEMPLATE_PARM_P(NODE) \
5010 (TREE_CODE (NODE) == TEMPLATE_TYPE_PARM \
5011 || TREE_CODE (NODE) == TEMPLATE_TEMPLATE_PARM \
5012 || TREE_CODE (NODE) == TEMPLATE_PARM_INDEX)
5013
5014 /* Mark NODE as a template parameter. */
5015 #define SET_DECL_TEMPLATE_PARM_P(NODE) \
5016 (DECL_LANG_FLAG_0 (NODE) = 1)
5017
5018 /* Nonzero if NODE is a template template parameter. */
5019 #define DECL_TEMPLATE_TEMPLATE_PARM_P(NODE) \
5020 (TREE_CODE (NODE) == TEMPLATE_DECL && DECL_TEMPLATE_PARM_P (NODE))
5021
5022 /* Nonzero for a DECL that represents a function template. */
5023 #define DECL_FUNCTION_TEMPLATE_P(NODE) \
5024 (TREE_CODE (NODE) == TEMPLATE_DECL \
5025 && DECL_TEMPLATE_RESULT (NODE) != NULL_TREE \
5026 && TREE_CODE (DECL_TEMPLATE_RESULT (NODE)) == FUNCTION_DECL)
5027
5028 /* Nonzero for a DECL that represents a class template or alias
5029 template. */
5030 #define DECL_TYPE_TEMPLATE_P(NODE) \
5031 (TREE_CODE (NODE) == TEMPLATE_DECL \
5032 && DECL_TEMPLATE_RESULT (NODE) != NULL_TREE \
5033 && TREE_CODE (DECL_TEMPLATE_RESULT (NODE)) == TYPE_DECL)
5034
5035 /* Nonzero for a DECL that represents a class template. */
5036 #define DECL_CLASS_TEMPLATE_P(NODE) \
5037 (DECL_TYPE_TEMPLATE_P (NODE) \
5038 && DECL_IMPLICIT_TYPEDEF_P (DECL_TEMPLATE_RESULT (NODE)))
5039
5040 /* Nonzero for a TEMPLATE_DECL that represents an alias template. */
5041 #define DECL_ALIAS_TEMPLATE_P(NODE) \
5042 (DECL_TYPE_TEMPLATE_P (NODE) \
5043 && !DECL_ARTIFICIAL (DECL_TEMPLATE_RESULT (NODE)))
5044
5045 /* Nonzero for a NODE which declares a type. */
5046 #define DECL_DECLARES_TYPE_P(NODE) \
5047 (TREE_CODE (NODE) == TYPE_DECL || DECL_TYPE_TEMPLATE_P (NODE))
5048
5049 /* Nonzero if NODE declares a function. */
5050 #define DECL_DECLARES_FUNCTION_P(NODE) \
5051 (TREE_CODE (NODE) == FUNCTION_DECL || DECL_FUNCTION_TEMPLATE_P (NODE))
5052
5053 /* Nonzero if NODE is the typedef implicitly generated for a type when
5054 the type is declared. In C++, `struct S {};' is roughly
5055 equivalent to `struct S {}; typedef struct S S;' in C.
5056 DECL_IMPLICIT_TYPEDEF_P will hold for the typedef indicated in this
5057 example. In C++, there is a second implicit typedef for each
5058 class, called the injected-class-name, in the scope of `S' itself, so that
5059 you can say `S::S'. DECL_SELF_REFERENCE_P will hold for that typedef. */
5060 #define DECL_IMPLICIT_TYPEDEF_P(NODE) \
5061 (TREE_CODE (NODE) == TYPE_DECL && DECL_LANG_FLAG_2 (NODE))
5062 #define SET_DECL_IMPLICIT_TYPEDEF_P(NODE) \
5063 (DECL_LANG_FLAG_2 (NODE) = 1)
5064 #define DECL_SELF_REFERENCE_P(NODE) \
5065 (TREE_CODE (NODE) == TYPE_DECL && DECL_LANG_FLAG_4 (NODE))
5066 #define SET_DECL_SELF_REFERENCE_P(NODE) \
5067 (DECL_LANG_FLAG_4 (NODE) = 1)
5068
5069 /* A `primary' template is one that has its own template header and is not
5070 a partial specialization. A member function of a class template is a
5071 template, but not primary. A member template is primary. Friend
5072 templates are primary, too. */
5073
5074 /* Returns the primary template corresponding to these parameters. */
5075 #define TPARMS_PRIMARY_TEMPLATE(NODE) (TREE_TYPE (NODE))
5076
5077 #define DECL_PRIMARY_TEMPLATE(NODE) \
5078 (TPARMS_PRIMARY_TEMPLATE (DECL_INNERMOST_TEMPLATE_PARMS (NODE)))
5079
5080 /* Returns nonzero if NODE is a primary template. */
5081 #define PRIMARY_TEMPLATE_P(NODE) (DECL_PRIMARY_TEMPLATE (NODE) == (NODE))
5082
5083 /* Nonzero iff NODE is a specialization of a template. The value
5084 indicates the type of specializations:
5085
5086 1=implicit instantiation
5087
5088 2=partial or explicit specialization, e.g.:
5089
5090 template <> int min<int> (int, int),
5091
5092 3=explicit instantiation, e.g.:
5093
5094 template int min<int> (int, int);
5095
5096 Note that NODE will be marked as a specialization even if the
5097 template it is instantiating is not a primary template. For
5098 example, given:
5099
5100 template <typename T> struct O {
5101 void f();
5102 struct I {};
5103 };
5104
5105 both O<int>::f and O<int>::I will be marked as instantiations.
5106
5107 If DECL_USE_TEMPLATE is nonzero, then DECL_TEMPLATE_INFO will also
5108 be non-NULL. */
5109 #define DECL_USE_TEMPLATE(NODE) (DECL_LANG_SPECIFIC (NODE)->u.base.use_template)
5110
5111 /* Like DECL_USE_TEMPLATE, but for class types. */
5112 #define CLASSTYPE_USE_TEMPLATE(NODE) \
5113 (LANG_TYPE_CLASS_CHECK (NODE)->use_template)
5114
5115 /* True if NODE is a specialization of a primary template. */
5116 #define CLASSTYPE_SPECIALIZATION_OF_PRIMARY_TEMPLATE_P(NODE) \
5117 (CLASS_TYPE_P (NODE) \
5118 && CLASSTYPE_USE_TEMPLATE (NODE) \
5119 && PRIMARY_TEMPLATE_P (CLASSTYPE_TI_TEMPLATE (NODE)))
5120
5121 #define DECL_TEMPLATE_INSTANTIATION(NODE) (DECL_USE_TEMPLATE (NODE) & 1)
5122 #define CLASSTYPE_TEMPLATE_INSTANTIATION(NODE) \
5123 (CLASSTYPE_USE_TEMPLATE (NODE) & 1)
5124
5125 #define DECL_TEMPLATE_SPECIALIZATION(NODE) (DECL_USE_TEMPLATE (NODE) == 2)
5126 #define SET_DECL_TEMPLATE_SPECIALIZATION(NODE) (DECL_USE_TEMPLATE (NODE) = 2)
5127
5128 /* Returns true for an explicit or partial specialization of a class
5129 template. */
5130 #define CLASSTYPE_TEMPLATE_SPECIALIZATION(NODE) \
5131 (CLASSTYPE_USE_TEMPLATE (NODE) == 2)
5132 #define SET_CLASSTYPE_TEMPLATE_SPECIALIZATION(NODE) \
5133 (CLASSTYPE_USE_TEMPLATE (NODE) = 2)
5134
5135 #define DECL_IMPLICIT_INSTANTIATION(NODE) (DECL_USE_TEMPLATE (NODE) == 1)
5136 #define SET_DECL_IMPLICIT_INSTANTIATION(NODE) (DECL_USE_TEMPLATE (NODE) = 1)
5137 #define CLASSTYPE_IMPLICIT_INSTANTIATION(NODE) \
5138 (CLASSTYPE_USE_TEMPLATE (NODE) == 1)
5139 #define SET_CLASSTYPE_IMPLICIT_INSTANTIATION(NODE) \
5140 (CLASSTYPE_USE_TEMPLATE (NODE) = 1)
5141
5142 #define DECL_EXPLICIT_INSTANTIATION(NODE) (DECL_USE_TEMPLATE (NODE) == 3)
5143 #define SET_DECL_EXPLICIT_INSTANTIATION(NODE) (DECL_USE_TEMPLATE (NODE) = 3)
5144 #define CLASSTYPE_EXPLICIT_INSTANTIATION(NODE) \
5145 (CLASSTYPE_USE_TEMPLATE (NODE) == 3)
5146 #define SET_CLASSTYPE_EXPLICIT_INSTANTIATION(NODE) \
5147 (CLASSTYPE_USE_TEMPLATE (NODE) = 3)
5148
5149 /* Nonzero if DECL is a friend function which is an instantiation
5150 from the point of view of the compiler, but not from the point of
5151 view of the language. For example given:
5152 template <class T> struct S { friend void f(T) {}; };
5153 the declaration of `void f(int)' generated when S<int> is
5154 instantiated will not be a DECL_TEMPLATE_INSTANTIATION, but will be
5155 a DECL_FRIEND_PSEUDO_TEMPLATE_INSTANTIATION. */
5156 #define DECL_FRIEND_PSEUDO_TEMPLATE_INSTANTIATION(DECL) \
5157 (DECL_LANG_SPECIFIC (DECL) && DECL_TEMPLATE_INFO (DECL) \
5158 && !DECL_USE_TEMPLATE (DECL))
5159
5160 /* Nonzero if DECL is a function generated from a function 'temploid',
5161 i.e. template, member of class template, or dependent friend. */
5162 #define DECL_TEMPLOID_INSTANTIATION(DECL) \
5163 (DECL_TEMPLATE_INSTANTIATION (DECL) \
5164 || DECL_FRIEND_PSEUDO_TEMPLATE_INSTANTIATION (DECL))
5165
5166 /* Nonzero if DECL is either defined implicitly by the compiler or
5167 generated from a temploid. */
5168 #define DECL_GENERATED_P(DECL) \
5169 (DECL_TEMPLOID_INSTANTIATION (DECL) || DECL_DEFAULTED_FN (DECL))
5170
5171 /* Nonzero iff we are currently processing a declaration for an
5172 entity with its own template parameter list, and which is not a
5173 full specialization. */
5174 #define PROCESSING_REAL_TEMPLATE_DECL_P() \
5175 (!processing_template_parmlist \
5176 && current_template_depth > template_class_depth (current_scope ()))
5177
5178 /* Nonzero if this VAR_DECL or FUNCTION_DECL has already been
5179 instantiated, i.e. its definition has been generated from the
5180 pattern given in the template. */
5181 #define DECL_TEMPLATE_INSTANTIATED(NODE) \
5182 DECL_LANG_FLAG_1 (VAR_OR_FUNCTION_DECL_CHECK (NODE))
5183
5184 /* We know what we're doing with this decl now. */
5185 #define DECL_INTERFACE_KNOWN(NODE) DECL_LANG_FLAG_5 (NODE)
5186
5187 /* DECL_EXTERNAL must be set on a decl until the decl is actually emitted,
5188 so that assemble_external will work properly. So we have this flag to
5189 tell us whether the decl is really not external.
5190
5191 This flag does not indicate whether or not the decl is defined in the
5192 current translation unit; it indicates whether or not we should emit the
5193 decl at the end of compilation if it is defined and needed. */
5194 #define DECL_NOT_REALLY_EXTERN(NODE) \
5195 (DECL_LANG_SPECIFIC (NODE)->u.base.not_really_extern)
5196
5197 #define DECL_REALLY_EXTERN(NODE) \
5198 (DECL_EXTERNAL (NODE) \
5199 && (!DECL_LANG_SPECIFIC (NODE) || !DECL_NOT_REALLY_EXTERN (NODE)))
5200
5201 /* A thunk is a stub function.
5202
5203 A thunk is an alternate entry point for an ordinary FUNCTION_DECL.
5204 The address of the ordinary FUNCTION_DECL is given by the
5205 DECL_INITIAL, which is always an ADDR_EXPR whose operand is a
5206 FUNCTION_DECL. The job of the thunk is to either adjust the this
5207 pointer before transferring control to the FUNCTION_DECL, or call
5208 FUNCTION_DECL and then adjust the result value. Note, the result
5209 pointer adjusting thunk must perform a call to the thunked
5210 function, (or be implemented via passing some invisible parameter
5211 to the thunked function, which is modified to perform the
5212 adjustment just before returning).
5213
5214 A thunk may perform either, or both, of the following operations:
5215
5216 o Adjust the this or result pointer by a constant offset.
5217 o Adjust the this or result pointer by looking up a vcall or vbase offset
5218 in the vtable.
5219
5220 A this pointer adjusting thunk converts from a base to a derived
5221 class, and hence adds the offsets. A result pointer adjusting thunk
5222 converts from a derived class to a base, and hence subtracts the
5223 offsets. If both operations are performed, then the constant
5224 adjustment is performed first for this pointer adjustment and last
5225 for the result pointer adjustment.
5226
5227 The constant adjustment is given by THUNK_FIXED_OFFSET. If the
5228 vcall or vbase offset is required, THUNK_VIRTUAL_OFFSET is
5229 used. For this pointer adjusting thunks, it is the vcall offset
5230 into the vtable. For result pointer adjusting thunks it is the
5231 binfo of the virtual base to convert to. Use that binfo's vbase
5232 offset.
5233
5234 It is possible to have equivalent covariant thunks. These are
5235 distinct virtual covariant thunks whose vbase offsets happen to
5236 have the same value. THUNK_ALIAS is used to pick one as the
5237 canonical thunk, which will get all the this pointer adjusting
5238 thunks attached to it. */
5239
5240 /* An integer indicating how many bytes should be subtracted from the
5241 this or result pointer when this function is called. */
5242 #define THUNK_FIXED_OFFSET(DECL) \
5243 (DECL_LANG_SPECIFIC (THUNK_FUNCTION_CHECK (DECL))->u.fn.u5.fixed_offset)
5244
5245 /* A tree indicating how to perform the virtual adjustment. For a this
5246 adjusting thunk it is the number of bytes to be added to the vtable
5247 to find the vcall offset. For a result adjusting thunk, it is the
5248 binfo of the relevant virtual base. If NULL, then there is no
5249 virtual adjust. (The vptr is always located at offset zero from
5250 the this or result pointer.) (If the covariant type is within the
5251 class hierarchy being laid out, the vbase index is not yet known
5252 at the point we need to create the thunks, hence the need to use
5253 binfos.) */
5254
5255 #define THUNK_VIRTUAL_OFFSET(DECL) \
5256 (LANG_DECL_MIN_CHECK (FUNCTION_DECL_CHECK (DECL))->access)
5257
5258 /* A thunk which is equivalent to another thunk. */
5259 #define THUNK_ALIAS(DECL) \
5260 (DECL_LANG_SPECIFIC (FUNCTION_DECL_CHECK (DECL))->u.min.template_info)
5261
5262 /* For thunk NODE, this is the FUNCTION_DECL thunked to. It is
5263 possible for the target to be a thunk too. */
5264 #define THUNK_TARGET(NODE) \
5265 (LANG_DECL_FN_CHECK (NODE)->befriending_classes)
5266
5267 /* True for a SCOPE_REF iff the "template" keyword was used to
5268 indicate that the qualified name denotes a template. */
5269 #define QUALIFIED_NAME_IS_TEMPLATE(NODE) \
5270 (TREE_LANG_FLAG_1 (SCOPE_REF_CHECK (NODE)))
5271
5272 /* [coroutines]
5273 */
5274
5275 /* True if NODE is a co-routine FUNCTION_DECL. */
5276 #define DECL_COROUTINE_P(NODE) \
5277 (LANG_DECL_FN_CHECK (DECL_COMMON_CHECK (NODE))->coroutine_p)
5278
5279 /* For a FUNCTION_DECL of a coroutine, this holds the ACTOR helper function
5280 decl. */
5281 #define DECL_ACTOR_FN(NODE) \
5282 (coro_get_actor_function ((NODE)))
5283
5284 /* For a FUNCTION_DECL of a coroutine, this holds the DESTROY helper function
5285 decl. */
5286 #define DECL_DESTROY_FN(NODE) \
5287 (coro_get_destroy_function ((NODE)))
5288
5289 /* For a FUNCTION_DECL of a coroutine helper (ACTOR or DESTROY), this points
5290 back to the original (ramp) function. */
5291 #define DECL_RAMP_FN(NODE) \
5292 (coro_get_ramp_function (NODE))
5293
5294 /* True for an OMP_ATOMIC that has dependent parameters. These are stored
5295 as an expr in operand 1, and integer_zero_node or clauses in operand 0. */
5296 #define OMP_ATOMIC_DEPENDENT_P(NODE) \
5297 (TREE_CODE (TREE_OPERAND (OMP_ATOMIC_CHECK (NODE), 0)) == INTEGER_CST \
5298 || TREE_CODE (TREE_OPERAND (OMP_ATOMIC_CHECK (NODE), 0)) == OMP_CLAUSE)
5299
5300 /* Used while gimplifying continue statements bound to OMP_FOR nodes. */
5301 #define OMP_FOR_GIMPLIFYING_P(NODE) \
5302 (TREE_LANG_FLAG_0 (OMP_LOOPING_CHECK (NODE)))
5303
5304 /* A language-specific token attached to the OpenMP data clauses to
5305 hold code (or code fragments) related to ctors, dtors, and op=.
5306 See semantics.cc for details. */
5307 #define CP_OMP_CLAUSE_INFO(NODE) \
5308 TREE_TYPE (OMP_CLAUSE_RANGE_CHECK (NODE, OMP_CLAUSE_PRIVATE, \
5309 OMP_CLAUSE__CONDTEMP_))
5310
5311 /* Nonzero if this transaction expression's body contains statements. */
5312 #define TRANSACTION_EXPR_IS_STMT(NODE) \
5313 TREE_LANG_FLAG_0 (TRANSACTION_EXPR_CHECK (NODE))
5314
5315 /* These macros provide convenient access to the various _STMT nodes
5316 created when parsing template declarations. */
5317 #define TRY_STMTS(NODE) TREE_OPERAND (TRY_BLOCK_CHECK (NODE), 0)
5318 #define TRY_HANDLERS(NODE) TREE_OPERAND (TRY_BLOCK_CHECK (NODE), 1)
5319
5320 #define EH_SPEC_STMTS(NODE) TREE_OPERAND (EH_SPEC_BLOCK_CHECK (NODE), 0)
5321 #define EH_SPEC_RAISES(NODE) TREE_OPERAND (EH_SPEC_BLOCK_CHECK (NODE), 1)
5322
5323 #define USING_STMT_NAMESPACE(NODE) TREE_OPERAND (USING_STMT_CHECK (NODE), 0)
5324
5325 /* Nonzero if this try block is a function try block. */
5326 #define FN_TRY_BLOCK_P(NODE) TREE_LANG_FLAG_3 (TRY_BLOCK_CHECK (NODE))
5327 #define HANDLER_PARMS(NODE) TREE_OPERAND (HANDLER_CHECK (NODE), 0)
5328 #define HANDLER_BODY(NODE) TREE_OPERAND (HANDLER_CHECK (NODE), 1)
5329 #define HANDLER_TYPE(NODE) TREE_TYPE (HANDLER_CHECK (NODE))
5330
5331 /* CLEANUP_STMT accessors. The statement(s) covered, the cleanup to run
5332 and the VAR_DECL for which this cleanup exists. */
5333 #define CLEANUP_BODY(NODE) TREE_OPERAND (CLEANUP_STMT_CHECK (NODE), 0)
5334 #define CLEANUP_EXPR(NODE) TREE_OPERAND (CLEANUP_STMT_CHECK (NODE), 1)
5335 #define CLEANUP_DECL(NODE) TREE_OPERAND (CLEANUP_STMT_CHECK (NODE), 2)
5336
5337 /* IF_STMT accessors. These give access to the condition of the if
5338 statement, the then block of the if statement, and the else block
5339 of the if statement if it exists. */
5340 #define IF_COND(NODE) TREE_OPERAND (IF_STMT_CHECK (NODE), 0)
5341 #define THEN_CLAUSE(NODE) TREE_OPERAND (IF_STMT_CHECK (NODE), 1)
5342 #define ELSE_CLAUSE(NODE) TREE_OPERAND (IF_STMT_CHECK (NODE), 2)
5343 #define IF_SCOPE(NODE) TREE_OPERAND (IF_STMT_CHECK (NODE), 3)
5344 #define IF_STMT_CONSTEXPR_P(NODE) TREE_LANG_FLAG_0 (IF_STMT_CHECK (NODE))
5345 #define IF_STMT_CONSTEVAL_P(NODE) TREE_LANG_FLAG_2 (IF_STMT_CHECK (NODE))
5346
5347 /* Like PACK_EXPANSION_EXTRA_ARGS, for constexpr if. IF_SCOPE is used while
5348 building an IF_STMT; IF_STMT_EXTRA_ARGS is used after it is complete. */
5349 #define IF_STMT_EXTRA_ARGS(NODE) IF_SCOPE (NODE)
5350
5351 /* RANGE_FOR_STMT accessors. These give access to the declarator,
5352 expression, body, and scope of the statement, respectively. */
5353 #define RANGE_FOR_DECL(NODE) TREE_OPERAND (RANGE_FOR_STMT_CHECK (NODE), 0)
5354 #define RANGE_FOR_EXPR(NODE) TREE_OPERAND (RANGE_FOR_STMT_CHECK (NODE), 1)
5355 #define RANGE_FOR_BODY(NODE) TREE_OPERAND (RANGE_FOR_STMT_CHECK (NODE), 2)
5356 #define RANGE_FOR_SCOPE(NODE) TREE_OPERAND (RANGE_FOR_STMT_CHECK (NODE), 3)
5357 #define RANGE_FOR_UNROLL(NODE) TREE_OPERAND (RANGE_FOR_STMT_CHECK (NODE), 4)
5358 #define RANGE_FOR_INIT_STMT(NODE) TREE_OPERAND (RANGE_FOR_STMT_CHECK (NODE), 5)
5359 #define RANGE_FOR_IVDEP(NODE) TREE_LANG_FLAG_6 (RANGE_FOR_STMT_CHECK (NODE))
5360
5361 /* STMT_EXPR accessor. */
5362 #define STMT_EXPR_STMT(NODE) TREE_OPERAND (STMT_EXPR_CHECK (NODE), 0)
5363
5364 /* EXPR_STMT accessor. This gives the expression associated with an
5365 expression statement. */
5366 #define EXPR_STMT_EXPR(NODE) TREE_OPERAND (EXPR_STMT_CHECK (NODE), 0)
5367
5368 /* True if this TARGET_EXPR was created by build_cplus_new, and so we can
5369 discard it if it isn't useful. */
5370 #define TARGET_EXPR_IMPLICIT_P(NODE) \
5371 TREE_LANG_FLAG_0 (TARGET_EXPR_CHECK (NODE))
5372
5373 /* True if this TARGET_EXPR is the result of list-initialization of a
5374 temporary. */
5375 #define TARGET_EXPR_LIST_INIT_P(NODE) \
5376 TREE_LANG_FLAG_1 (TARGET_EXPR_CHECK (NODE))
5377
5378 /* True if this TARGET_EXPR expresses direct-initialization of an object
5379 to be named later. */
5380 #define TARGET_EXPR_DIRECT_INIT_P(NODE) \
5381 TREE_LANG_FLAG_2 (TARGET_EXPR_CHECK (NODE))
5382
5383 /* True if NODE is a TARGET_EXPR that just expresses a copy of its INITIAL; if
5384 the initializer has void type, it's doing something more complicated. */
5385 #define SIMPLE_TARGET_EXPR_P(NODE) \
5386 (TREE_CODE (NODE) == TARGET_EXPR \
5387 && TARGET_EXPR_INITIAL (NODE) \
5388 && !VOID_TYPE_P (TREE_TYPE (TARGET_EXPR_INITIAL (NODE))))
5389
5390 /* True if T is a TARGET_EXPR for which we'll need to replace_decl to use it as
5391 an initializer. */
5392 inline bool
target_expr_needs_replace(tree t)5393 target_expr_needs_replace (tree t)
5394 {
5395 if (!t || TREE_CODE (t) != TARGET_EXPR)
5396 return false;
5397 tree init = TARGET_EXPR_INITIAL (t);
5398 if (!init || !VOID_TYPE_P (TREE_TYPE (init)))
5399 return false;
5400 while (TREE_CODE (init) == COMPOUND_EXPR)
5401 init = TREE_OPERAND (init, 1);
5402 return TREE_CODE (init) != AGGR_INIT_EXPR;
5403 }
5404
5405 /* True if EXPR expresses direct-initialization of a TYPE. */
5406 #define DIRECT_INIT_EXPR_P(TYPE,EXPR) \
5407 (TREE_CODE (EXPR) == TARGET_EXPR && TREE_LANG_FLAG_2 (EXPR) \
5408 && same_type_ignoring_top_level_qualifiers_p (TYPE, TREE_TYPE (EXPR)))
5409
5410 /* True if this CONVERT_EXPR is for a conversion to virtual base in
5411 an NSDMI, and should be re-evaluated when used in a constructor. */
5412 #define CONVERT_EXPR_VBASE_PATH(NODE) \
5413 TREE_LANG_FLAG_0 (CONVERT_EXPR_CHECK (NODE))
5414
5415 /* True if SIZEOF_EXPR argument is type. */
5416 #define SIZEOF_EXPR_TYPE_P(NODE) \
5417 TREE_LANG_FLAG_0 (SIZEOF_EXPR_CHECK (NODE))
5418
5419 /* True if the ALIGNOF_EXPR was spelled "alignof". */
5420 #define ALIGNOF_EXPR_STD_P(NODE) \
5421 TREE_LANG_FLAG_0 (ALIGNOF_EXPR_CHECK (NODE))
5422
5423 /* OMP_DEPOBJ accessors. These give access to the depobj expression of the
5424 #pragma omp depobj directive and the clauses, respectively. If
5425 OMP_DEPOBJ_CLAUSES is INTEGER_CST, it is instead the update clause kind
5426 or OMP_CLAUSE_DEPEND_LAST for destroy clause. */
5427 #define OMP_DEPOBJ_DEPOBJ(NODE) TREE_OPERAND (OMP_DEPOBJ_CHECK (NODE), 0)
5428 #define OMP_DEPOBJ_CLAUSES(NODE) TREE_OPERAND (OMP_DEPOBJ_CHECK (NODE), 1)
5429
5430 /* An enumeration of the kind of tags that C++ accepts. */
5431 enum tag_types {
5432 none_type = 0, /* Not a tag type. */
5433 record_type, /* "struct" types. */
5434 class_type, /* "class" types. */
5435 union_type, /* "union" types. */
5436 enum_type, /* "enum" types. */
5437 typename_type, /* "typename" types. */
5438 scope_type /* namespace or tagged type name followed by :: */
5439 };
5440
5441 /* The various kinds of lvalues we distinguish. */
5442 enum cp_lvalue_kind_flags {
5443 clk_none = 0, /* Things that are not an lvalue. */
5444 clk_ordinary = 1, /* An ordinary lvalue. */
5445 clk_rvalueref = 2,/* An xvalue (rvalue formed using an rvalue reference) */
5446 clk_class = 4, /* A prvalue of class or array type. */
5447 clk_bitfield = 8, /* An lvalue for a bit-field. */
5448 clk_packed = 16, /* An lvalue for a packed field. */
5449 clk_implicit_rval = 1<<5 /* An lvalue being treated as an xvalue. */
5450 };
5451
5452 /* This type is used for parameters and variables which hold
5453 combinations of the flags in enum cp_lvalue_kind_flags. */
5454 typedef int cp_lvalue_kind;
5455
5456 /* Various kinds of template specialization, instantiation, etc. */
5457 enum tmpl_spec_kind {
5458 tsk_none, /* Not a template at all. */
5459 tsk_invalid_member_spec, /* An explicit member template
5460 specialization, but the enclosing
5461 classes have not all been explicitly
5462 specialized. */
5463 tsk_invalid_expl_inst, /* An explicit instantiation containing
5464 template parameter lists. */
5465 tsk_excessive_parms, /* A template declaration with too many
5466 template parameter lists. */
5467 tsk_insufficient_parms, /* A template declaration with too few
5468 parameter lists. */
5469 tsk_template, /* A template declaration. */
5470 tsk_expl_spec, /* An explicit specialization. */
5471 tsk_expl_inst /* An explicit instantiation. */
5472 };
5473
5474 /* The various kinds of access. BINFO_ACCESS depends on these being
5475 two bit quantities. The numerical values are important; they are
5476 used to initialize RTTI data structures, so changing them changes
5477 the ABI. */
5478 enum access_kind {
5479 ak_none = 0, /* Inaccessible. */
5480 ak_public = 1, /* Accessible, as a `public' thing. */
5481 ak_protected = 2, /* Accessible, as a `protected' thing. */
5482 ak_private = 3 /* Accessible, as a `private' thing. */
5483 };
5484
5485 /* The various kinds of special functions. If you add to this list,
5486 you should update special_function_p as well. */
5487 enum special_function_kind {
5488 sfk_none = 0, /* Not a special function. This enumeral
5489 must have value zero; see
5490 special_function_p. */
5491 /* The following are ordered, for use by member synthesis fns. */
5492 sfk_destructor, /* A destructor. */
5493 sfk_constructor, /* A constructor. */
5494 sfk_inheriting_constructor, /* An inheriting constructor */
5495 sfk_copy_constructor, /* A copy constructor. */
5496 sfk_move_constructor, /* A move constructor. */
5497 sfk_copy_assignment, /* A copy assignment operator. */
5498 sfk_move_assignment, /* A move assignment operator. */
5499 /* The following are unordered. */
5500 sfk_complete_destructor, /* A destructor for complete objects. */
5501 sfk_base_destructor, /* A destructor for base subobjects. */
5502 sfk_deleting_destructor, /* A destructor for complete objects that
5503 deletes the object after it has been
5504 destroyed. */
5505 sfk_conversion, /* A conversion operator. */
5506 sfk_deduction_guide, /* A class template deduction guide. */
5507 sfk_comparison, /* A comparison operator (e.g. ==, <, <=>). */
5508 sfk_virtual_destructor /* Used by member synthesis fns. */
5509 };
5510
5511 /* The various kinds of linkage. From [basic.link],
5512
5513 A name is said to have linkage when it might denote the same
5514 object, reference, function, type, template, namespace or value
5515 as a name introduced in another scope:
5516
5517 -- When a name has external linkage, the entity it denotes can
5518 be referred to from scopes of other translation units or from
5519 other scopes of the same translation unit.
5520
5521 -- When a name has internal linkage, the entity it denotes can
5522 be referred to by names from other scopes in the same
5523 translation unit.
5524
5525 -- When a name has no linkage, the entity it denotes cannot be
5526 referred to by names from other scopes. */
5527
5528 enum linkage_kind {
5529 lk_none, /* No linkage. */
5530 lk_internal, /* Internal linkage. */
5531 lk_external /* External linkage. */
5532 };
5533
5534 enum duration_kind {
5535 dk_static,
5536 dk_thread,
5537 dk_auto,
5538 dk_dynamic
5539 };
5540
5541 /* Bitmask flags to control type substitution. */
5542 enum tsubst_flags {
5543 tf_none = 0, /* nothing special */
5544 tf_error = 1 << 0, /* give error messages */
5545 tf_warning = 1 << 1, /* give warnings too */
5546 tf_ignore_bad_quals = 1 << 2, /* ignore bad cvr qualifiers */
5547 tf_keep_type_decl = 1 << 3, /* retain typedef type decls
5548 (make_typename_type use) */
5549 tf_ptrmem_ok = 1 << 4, /* pointers to member ok (internal
5550 instantiate_type use) */
5551 tf_user = 1 << 5, /* found template must be a user template
5552 (lookup_template_class use) */
5553 tf_conv = 1 << 6, /* We are determining what kind of
5554 conversion might be permissible,
5555 not actually performing the
5556 conversion. */
5557 tf_decltype = 1 << 7, /* We are the operand of decltype.
5558 Used to implement the special rules
5559 for calls in decltype (5.2.2/11). */
5560 tf_partial = 1 << 8, /* Doing initial explicit argument
5561 substitution in fn_type_unification. */
5562 tf_fndecl_type = 1 << 9, /* Substituting the type of a function
5563 declaration. */
5564 tf_no_cleanup = 1 << 10, /* Do not build a cleanup
5565 (build_target_expr and friends) */
5566 tf_norm = 1 << 11, /* Build diagnostic information during
5567 constraint normalization. */
5568 tf_tst_ok = 1 << 12, /* Allow a typename-specifier to name
5569 a template (C++17 or later). */
5570 tf_dguide = 1 << 13, /* Building a deduction guide from a ctor. */
5571 /* Convenient substitution flags combinations. */
5572 tf_warning_or_error = tf_warning | tf_error
5573 };
5574
5575 /* This type is used for parameters and variables which hold
5576 combinations of the flags in enum tsubst_flags. */
5577 typedef int tsubst_flags_t;
5578
5579 /* The kind of checking we can do looking in a class hierarchy. */
5580 enum base_access_flags {
5581 ba_any = 0, /* Do not check access, allow an ambiguous base,
5582 prefer a non-virtual base */
5583 ba_unique = 1 << 0, /* Must be a unique base. */
5584 ba_check_bit = 1 << 1, /* Check access. */
5585 ba_check = ba_unique | ba_check_bit,
5586 ba_ignore_scope = 1 << 2 /* Ignore access allowed by local scope. */
5587 };
5588
5589 /* This type is used for parameters and variables which hold
5590 combinations of the flags in enum base_access_flags. */
5591 typedef int base_access;
5592
5593 /* The various kinds of access check during parsing. */
5594 enum deferring_kind {
5595 dk_no_deferred = 0, /* Check access immediately */
5596 dk_deferred = 1, /* Deferred check */
5597 dk_no_check = 2 /* No access check */
5598 };
5599
5600 /* The kind of base we can find, looking in a class hierarchy.
5601 Values <0 indicate we failed. */
5602 enum base_kind {
5603 bk_inaccessible = -3, /* The base is inaccessible */
5604 bk_ambig = -2, /* The base is ambiguous */
5605 bk_not_base = -1, /* It is not a base */
5606 bk_same_type = 0, /* It is the same type */
5607 bk_proper_base = 1, /* It is a proper base */
5608 bk_via_virtual = 2 /* It is a proper base, but via a virtual
5609 path. This might not be the canonical
5610 binfo. */
5611 };
5612
5613 /* Node for "pointer to (virtual) function".
5614 This may be distinct from ptr_type_node so gdb can distinguish them. */
5615 #define vfunc_ptr_type_node vtable_entry_type
5616
5617
5618 /* For building calls to `delete'. */
5619 extern GTY(()) tree integer_two_node;
5620
5621 /* The number of function bodies which we are currently processing.
5622 (Zero if we are at namespace scope, one inside the body of a
5623 function, two inside the body of a function in a local class, etc.) */
5624 extern int function_depth;
5625
5626 /* Nonzero if we are inside spec_hasher::equal, which affects
5627 comparison of PARM_DECLs in cp_tree_equal. */
5628 extern int comparing_specializations;
5629
5630 /* Nonzero if we want different dependent aliases to compare as unequal.
5631 FIXME we should always do this except during deduction/ordering. */
5632 extern int comparing_dependent_aliases;
5633
5634 /* In parser.cc. */
5635
5636 /* Nonzero if we are parsing an unevaluated operand: an operand to
5637 sizeof, typeof, or alignof. This is a count since operands to
5638 sizeof can be nested. */
5639
5640 extern int cp_unevaluated_operand;
5641
5642 /* RAII class used to inhibit the evaluation of operands during parsing
5643 and template instantiation. Evaluation warnings are also inhibited. */
5644
5645 class cp_unevaluated
5646 {
5647 public:
5648 cp_unevaluated ();
5649 ~cp_unevaluated ();
5650 };
5651
5652 /* The reverse: an RAII class used for nested contexts that are evaluated even
5653 if the enclosing context is not. */
5654
5655 class cp_evaluated
5656 {
5657 public:
5658 int uneval;
5659 int inhibit;
5660 cp_evaluated (bool reset = true)
uneval(cp_unevaluated_operand)5661 : uneval(cp_unevaluated_operand), inhibit(c_inhibit_evaluation_warnings)
5662 { if (reset)
5663 cp_unevaluated_operand = c_inhibit_evaluation_warnings = 0; }
~cp_evaluated()5664 ~cp_evaluated ()
5665 { cp_unevaluated_operand = uneval;
5666 c_inhibit_evaluation_warnings = inhibit; }
5667 };
5668
5669 /* in pt.cc */
5670
5671 /* These values are used for the `STRICT' parameter to type_unification and
5672 fn_type_unification. Their meanings are described with the
5673 documentation for fn_type_unification. */
5674
5675 enum unification_kind_t {
5676 DEDUCE_CALL,
5677 DEDUCE_CONV,
5678 DEDUCE_EXACT
5679 };
5680
5681 // An RAII class used to create a new pointer map for local
5682 // specializations. When the stack goes out of scope, the
5683 // previous pointer map is restored.
5684 enum lss_policy { lss_blank, lss_copy, lss_nop };
5685 class local_specialization_stack
5686 {
5687 public:
5688 local_specialization_stack (lss_policy = lss_blank);
5689 ~local_specialization_stack ();
5690
5691 hash_map<tree, tree> *saved;
5692 };
5693
5694 /* Entry in the specialization hash table. */
5695 struct GTY((for_user)) spec_entry
5696 {
5697 tree tmpl; /* The general template this is a specialization of. */
5698 tree args; /* The args for this (maybe-partial) specialization. */
5699 tree spec; /* The specialization itself. */
5700 };
5701
5702 /* in class.cc */
5703
5704 extern int current_class_depth;
5705
5706 /* in decl.cc */
5707
5708 /* An array of static vars & fns. */
5709 extern GTY(()) vec<tree, va_gc> *static_decls;
5710
5711 /* An array of vtable-needing types that have no key function, or have
5712 an emitted key function. */
5713 extern GTY(()) vec<tree, va_gc> *keyed_classes;
5714
5715 /* Here's where we control how name mangling takes place. */
5716
5717 /* Cannot use '$' up front, because this confuses gdb
5718 (names beginning with '$' are gdb-local identifiers).
5719
5720 Note that all forms in which the '$' is significant are long enough
5721 for direct indexing (meaning that if we know there is a '$'
5722 at a particular location, we can index into the string at
5723 any other location that provides distinguishing characters). */
5724
5725 /* Define NO_DOT_IN_LABEL in your favorite tm file if your assembler
5726 doesn't allow '.' in symbol names. */
5727 #ifndef NO_DOT_IN_LABEL
5728
5729 #define JOINER '.'
5730 #define JOIN_STR "."
5731
5732 #define AUTO_TEMP_NAME "_.tmp_"
5733 #define VFIELD_BASE ".vf"
5734 #define VFIELD_NAME "_vptr."
5735 #define VFIELD_NAME_FORMAT "_vptr.%s"
5736
5737 #else /* NO_DOT_IN_LABEL */
5738
5739 #ifndef NO_DOLLAR_IN_LABEL
5740
5741 #define JOINER '$'
5742 #define JOIN_STR "$"
5743
5744 #define AUTO_TEMP_NAME "_$tmp_"
5745 #define VFIELD_BASE "$vf"
5746 #define VFIELD_NAME "_vptr$"
5747 #define VFIELD_NAME_FORMAT "_vptr$%s"
5748
5749 #else /* NO_DOLLAR_IN_LABEL */
5750
5751 #define JOIN_STR "_"
5752
5753 #define VTABLE_NAME "__vt_"
5754 #define VTABLE_NAME_P(ID_NODE) \
5755 (!strncmp (IDENTIFIER_POINTER (ID_NODE), VTABLE_NAME, \
5756 sizeof (VTABLE_NAME) - 1))
5757 #define VFIELD_BASE "__vfb"
5758 #define VFIELD_NAME "__vptr_"
5759 #define VFIELD_NAME_P(ID_NODE) \
5760 (!strncmp (IDENTIFIER_POINTER (ID_NODE), VFIELD_NAME, \
5761 sizeof (VFIELD_NAME) - 1))
5762 #define VFIELD_NAME_FORMAT "__vptr_%s"
5763
5764 #endif /* NO_DOLLAR_IN_LABEL */
5765 #endif /* NO_DOT_IN_LABEL */
5766
5767 #define UDLIT_OP_ANSI_PREFIX "operator\"\""
5768 #define UDLIT_OP_ANSI_FORMAT UDLIT_OP_ANSI_PREFIX "%s"
5769 #define UDLIT_OP_MANGLED_PREFIX "li"
5770 #define UDLIT_OP_MANGLED_FORMAT UDLIT_OP_MANGLED_PREFIX "%s"
5771 #define UDLIT_OPER_P(ID_NODE) \
5772 (!strncmp (IDENTIFIER_POINTER (ID_NODE), \
5773 UDLIT_OP_ANSI_PREFIX, \
5774 sizeof (UDLIT_OP_ANSI_PREFIX) - 1))
5775 #define UDLIT_OP_SUFFIX(ID_NODE) \
5776 (IDENTIFIER_POINTER (ID_NODE) + sizeof (UDLIT_OP_ANSI_PREFIX) - 1)
5777
5778 #if !defined(NO_DOLLAR_IN_LABEL) || !defined(NO_DOT_IN_LABEL)
5779
5780 #define VTABLE_NAME_P(ID_NODE) (IDENTIFIER_POINTER (ID_NODE)[1] == 'v' \
5781 && IDENTIFIER_POINTER (ID_NODE)[2] == 't' \
5782 && IDENTIFIER_POINTER (ID_NODE)[3] == JOINER)
5783
5784 #define VFIELD_NAME_P(ID_NODE) \
5785 (!strncmp (IDENTIFIER_POINTER (ID_NODE), VFIELD_NAME, sizeof(VFIELD_NAME)-1))
5786
5787 #endif /* !defined(NO_DOLLAR_IN_LABEL) || !defined(NO_DOT_IN_LABEL) */
5788
5789
5790 /* Nonzero if we're done parsing and into end-of-file activities.
5791 Two if we're done with front-end processing. */
5792
5793 extern int at_eof;
5794
5795 /* True if note_mangling_alias should enqueue mangling aliases for
5796 later generation, rather than emitting them right away. */
5797
5798 extern bool defer_mangling_aliases;
5799
5800 /* True if noexcept is part of the type (i.e. in C++17). */
5801
5802 extern bool flag_noexcept_type;
5803
5804 /* A list of namespace-scope objects which have constructors or
5805 destructors which reside in the global scope. The decl is stored
5806 in the TREE_VALUE slot and the initializer is stored in the
5807 TREE_PURPOSE slot. */
5808 extern GTY(()) tree static_aggregates;
5809 /* Likewise, for thread local storage. */
5810 extern GTY(()) tree tls_aggregates;
5811
5812 /* A hash-map mapping from variable decls to the dynamic initializer for
5813 the decl. This is currently only used by OpenMP. */
5814 extern GTY(()) decl_tree_map *dynamic_initializers;
5815
5816 enum overload_flags { NO_SPECIAL = 0, DTOR_FLAG, TYPENAME_FLAG };
5817
5818 /* These are uses as bits in flags passed to various functions to
5819 control their behavior. Despite the LOOKUP_ prefix, many of these
5820 do not control name lookup. ??? Functions using these flags should
5821 probably be modified to accept explicit boolean flags for the
5822 behaviors relevant to them. */
5823 /* Check for access violations. */
5824 #define LOOKUP_PROTECT (1 << 0)
5825 #define LOOKUP_NORMAL (LOOKUP_PROTECT)
5826 /* Even if the function found by lookup is a virtual function, it
5827 should be called directly. */
5828 #define LOOKUP_NONVIRTUAL (1 << 1)
5829 /* Non-converting (i.e., "explicit") constructors are not tried. This flag
5830 indicates that we are not performing direct-initialization. */
5831 #define LOOKUP_ONLYCONVERTING (1 << 2)
5832 #define LOOKUP_IMPLICIT (LOOKUP_NORMAL | LOOKUP_ONLYCONVERTING)
5833 /* If a temporary is created, it should be created so that it lives
5834 as long as the current variable bindings; otherwise it only lives
5835 until the end of the complete-expression. It also forces
5836 direct-initialization in cases where other parts of the compiler
5837 have already generated a temporary, such as reference
5838 initialization and the catch parameter. */
5839 #define DIRECT_BIND (1 << 3)
5840 /* We're performing a user-defined conversion, so more user-defined
5841 conversions are not permitted (only built-in conversions). */
5842 #define LOOKUP_NO_CONVERSION (1 << 4)
5843 /* The user has explicitly called a destructor. (Therefore, we do
5844 not need to check that the object is non-NULL before calling the
5845 destructor.) */
5846 #define LOOKUP_DESTRUCTOR (1 << 5)
5847 /* Do not permit references to bind to temporaries. */
5848 #define LOOKUP_NO_TEMP_BIND (1 << 6)
5849 /* We're trying to treat an lvalue as an rvalue. */
5850 /* FIXME remove when we extend the P1825 semantics to all standard modes, the
5851 C++20 approach uses IMPLICIT_RVALUE_P instead. */
5852 #define LOOKUP_PREFER_RVALUE (LOOKUP_NO_TEMP_BIND << 1)
5853 /* We're inside an init-list, so narrowing conversions are ill-formed. */
5854 #define LOOKUP_NO_NARROWING (LOOKUP_PREFER_RVALUE << 1)
5855 /* We're looking up a constructor for list-initialization. */
5856 #define LOOKUP_LIST_INIT_CTOR (LOOKUP_NO_NARROWING << 1)
5857 /* This is the first parameter of a copy constructor. */
5858 #define LOOKUP_COPY_PARM (LOOKUP_LIST_INIT_CTOR << 1)
5859 /* We only want to consider list constructors. */
5860 #define LOOKUP_LIST_ONLY (LOOKUP_COPY_PARM << 1)
5861 /* Return after determining which function to call and checking access.
5862 Used by sythesized_method_walk to determine which functions will
5863 be called to initialize subobjects, in order to determine exception
5864 specification and possible implicit delete.
5865 This is kind of a hack, but exiting early avoids problems with trying
5866 to perform argument conversions when the class isn't complete yet. */
5867 #define LOOKUP_SPECULATIVE (LOOKUP_LIST_ONLY << 1)
5868 /* Used by calls from defaulted functions to limit the overload set to avoid
5869 cycles trying to declare them (core issue 1092). */
5870 #define LOOKUP_DEFAULTED (LOOKUP_SPECULATIVE << 1)
5871 /* Used in calls to store_init_value to suppress its usual call to
5872 digest_init. */
5873 #define LOOKUP_ALREADY_DIGESTED (LOOKUP_DEFAULTED << 1)
5874 /* Like LOOKUP_NO_TEMP_BIND, but also prevent binding to xvalues. */
5875 #define LOOKUP_NO_RVAL_BIND (LOOKUP_ALREADY_DIGESTED << 1)
5876 /* Used by case_conversion to disregard non-integral conversions. */
5877 #define LOOKUP_NO_NON_INTEGRAL (LOOKUP_NO_RVAL_BIND << 1)
5878 /* Used for delegating constructors in order to diagnose self-delegation. */
5879 #define LOOKUP_DELEGATING_CONS (LOOKUP_NO_NON_INTEGRAL << 1)
5880 /* Allow initialization of a flexible array members. */
5881 #define LOOKUP_ALLOW_FLEXARRAY_INIT (LOOKUP_DELEGATING_CONS << 1)
5882 /* We're looking for either a rewritten comparison operator candidate or the
5883 operator to use on the former's result. We distinguish between the two by
5884 knowing that comparisons other than == and <=> must be the latter, as must
5885 a <=> expression trying to rewrite to <=> without reversing. */
5886 #define LOOKUP_REWRITTEN (LOOKUP_ALLOW_FLEXARRAY_INIT << 1)
5887 /* Reverse the order of the two arguments for comparison rewriting. First we
5888 swap the arguments in add_operator_candidates, then we swap the conversions
5889 in add_candidate (so that they correspond to the original order of the
5890 args), then we swap the conversions back in build_new_op_1 (so they
5891 correspond to the order of the args in the candidate). */
5892 #define LOOKUP_REVERSED (LOOKUP_REWRITTEN << 1)
5893 /* We're initializing an aggregate from a parenthesized list of values. */
5894 #define LOOKUP_AGGREGATE_PAREN_INIT (LOOKUP_REVERSED << 1)
5895
5896 /* These flags are used by the conversion code.
5897 CONV_IMPLICIT : Perform implicit conversions (standard and user-defined).
5898 CONV_STATIC : Perform the explicit conversions for static_cast.
5899 CONV_CONST : Perform the explicit conversions for const_cast.
5900 CONV_REINTERPRET: Perform the explicit conversions for reinterpret_cast.
5901 CONV_PRIVATE : Perform upcasts to private bases.
5902 CONV_FORCE_TEMP : Require a new temporary when converting to the same
5903 aggregate type. */
5904
5905 #define CONV_IMPLICIT 1
5906 #define CONV_STATIC 2
5907 #define CONV_CONST 4
5908 #define CONV_REINTERPRET 8
5909 #define CONV_PRIVATE 16
5910 #define CONV_FORCE_TEMP 32
5911 #define CONV_FOLD 64
5912 #define CONV_OLD_CONVERT (CONV_IMPLICIT | CONV_STATIC | CONV_CONST \
5913 | CONV_REINTERPRET)
5914 #define CONV_C_CAST (CONV_IMPLICIT | CONV_STATIC | CONV_CONST \
5915 | CONV_REINTERPRET | CONV_PRIVATE | CONV_FORCE_TEMP)
5916 #define CONV_BACKEND_CONVERT (CONV_OLD_CONVERT | CONV_FOLD)
5917
5918 /* Used by build_expr_type_conversion to indicate which types are
5919 acceptable as arguments to the expression under consideration. */
5920
5921 #define WANT_INT 1 /* integer types, including bool */
5922 #define WANT_FLOAT 2 /* floating point types */
5923 #define WANT_ENUM 4 /* enumerated types */
5924 #define WANT_POINTER 8 /* pointer types */
5925 #define WANT_NULL 16 /* null pointer constant */
5926 #define WANT_VECTOR_OR_COMPLEX 32 /* vector or complex types */
5927 #define WANT_ARITH (WANT_INT | WANT_FLOAT | WANT_VECTOR_OR_COMPLEX)
5928
5929 /* Used with comptypes, and related functions, to guide type
5930 comparison. */
5931
5932 #define COMPARE_STRICT 0 /* Just check if the types are the
5933 same. */
5934 #define COMPARE_BASE 1 /* Check to see if the second type is
5935 derived from the first. */
5936 #define COMPARE_DERIVED 2 /* Like COMPARE_BASE, but in
5937 reverse. */
5938 #define COMPARE_REDECLARATION 4 /* The comparison is being done when
5939 another declaration of an existing
5940 entity is seen. */
5941 #define COMPARE_STRUCTURAL 8 /* The comparison is intended to be
5942 structural. The actual comparison
5943 will be identical to
5944 COMPARE_STRICT. */
5945
5946 /* Used with start function. */
5947 #define SF_DEFAULT 0 /* No flags. */
5948 #define SF_PRE_PARSED 1 /* The function declaration has
5949 already been parsed. */
5950 #define SF_INCLASS_INLINE 2 /* The function is an inline, defined
5951 in the class body. */
5952
5953 /* Used with start_decl's initialized parameter. */
5954 #define SD_UNINITIALIZED 0
5955 #define SD_INITIALIZED 1
5956 /* Like SD_INITIALIZED, but also mark the new decl as DECL_DECOMPOSITION_P. */
5957 #define SD_DECOMPOSITION 2
5958 #define SD_DEFAULTED 3
5959 #define SD_DELETED 4
5960
5961 /* Returns nonzero iff TYPE1 and TYPE2 are the same type, or if TYPE2
5962 is derived from TYPE1, or if TYPE2 is a pointer (reference) to a
5963 class derived from the type pointed to (referred to) by TYPE1. */
5964 #define same_or_base_type_p(TYPE1, TYPE2) \
5965 comptypes ((TYPE1), (TYPE2), COMPARE_BASE)
5966
5967 /* These macros are used to access a TEMPLATE_PARM_INDEX. */
5968 #define TEMPLATE_PARM_INDEX_CAST(NODE) \
5969 ((template_parm_index*)TEMPLATE_PARM_INDEX_CHECK (NODE))
5970 #define TEMPLATE_PARM_IDX(NODE) (TEMPLATE_PARM_INDEX_CAST (NODE)->index)
5971 #define TEMPLATE_PARM_LEVEL(NODE) (TEMPLATE_PARM_INDEX_CAST (NODE)->level)
5972 #define TEMPLATE_PARM_DESCENDANTS(NODE) (TREE_CHAIN (NODE))
5973 #define TEMPLATE_PARM_ORIG_LEVEL(NODE) (TEMPLATE_PARM_INDEX_CAST (NODE)->orig_level)
5974 #define TEMPLATE_PARM_DECL(NODE) (TEMPLATE_PARM_INDEX_CAST (NODE)->decl)
5975 #define TEMPLATE_PARM_PARAMETER_PACK(NODE) \
5976 (TREE_LANG_FLAG_0 (TEMPLATE_PARM_INDEX_CHECK (NODE)))
5977
5978 /* These macros are for accessing the fields of TEMPLATE_TYPE_PARM,
5979 TEMPLATE_TEMPLATE_PARM and BOUND_TEMPLATE_TEMPLATE_PARM nodes. */
5980 #define TEMPLATE_TYPE_PARM_INDEX(NODE) \
5981 (TYPE_VALUES_RAW (TREE_CHECK3 ((NODE), TEMPLATE_TYPE_PARM, \
5982 TEMPLATE_TEMPLATE_PARM, \
5983 BOUND_TEMPLATE_TEMPLATE_PARM)))
5984 #define TEMPLATE_TYPE_IDX(NODE) \
5985 (TEMPLATE_PARM_IDX (TEMPLATE_TYPE_PARM_INDEX (NODE)))
5986 #define TEMPLATE_TYPE_LEVEL(NODE) \
5987 (TEMPLATE_PARM_LEVEL (TEMPLATE_TYPE_PARM_INDEX (NODE)))
5988 #define TEMPLATE_TYPE_ORIG_LEVEL(NODE) \
5989 (TEMPLATE_PARM_ORIG_LEVEL (TEMPLATE_TYPE_PARM_INDEX (NODE)))
5990 #define TEMPLATE_TYPE_DECL(NODE) \
5991 (TEMPLATE_PARM_DECL (TEMPLATE_TYPE_PARM_INDEX (NODE)))
5992 #define TEMPLATE_TYPE_PARAMETER_PACK(NODE) \
5993 (TEMPLATE_PARM_PARAMETER_PACK (TEMPLATE_TYPE_PARM_INDEX (NODE)))
5994
5995 /* For a C++17 class deduction placeholder, the template it represents. */
5996 #define CLASS_PLACEHOLDER_TEMPLATE(NODE) \
5997 (DECL_INITIAL (TYPE_NAME (TEMPLATE_TYPE_PARM_CHECK (NODE))))
5998
5999 /* Contexts in which auto deduction occurs. These flags are
6000 used to control diagnostics in do_auto_deduction. */
6001
6002 enum auto_deduction_context
6003 {
6004 adc_unspecified, /* Not given */
6005 adc_variable_type, /* Variable initializer deduction */
6006 adc_return_type, /* Return type deduction */
6007 adc_unify, /* Template argument deduction */
6008 adc_requirement, /* Argument deduction constraint */
6009 adc_decomp_type /* Decomposition declaration initializer deduction */
6010 };
6011
6012 /* True iff this TEMPLATE_TYPE_PARM represents decltype(auto). */
6013 #define AUTO_IS_DECLTYPE(NODE) \
6014 (TYPE_LANG_FLAG_5 (TEMPLATE_TYPE_PARM_CHECK (NODE)))
6015
6016 /* These constants can used as bit flags in the process of tree formatting.
6017
6018 TFF_PLAIN_IDENTIFIER: unqualified part of a name.
6019 TFF_SCOPE: include the class and namespace scope of the name.
6020 TFF_CHASE_TYPEDEF: print the original type-id instead of the typedef-name.
6021 TFF_DECL_SPECIFIERS: print decl-specifiers.
6022 TFF_CLASS_KEY_OR_ENUM: precede a class-type name (resp. enum name) with
6023 a class-key (resp. `enum').
6024 TFF_RETURN_TYPE: include function return type.
6025 TFF_FUNCTION_DEFAULT_ARGUMENTS: include function default parameter values.
6026 TFF_EXCEPTION_SPECIFICATION: show function exception specification.
6027 TFF_TEMPLATE_HEADER: show the template<...> header in a
6028 template-declaration.
6029 TFF_TEMPLATE_NAME: show only template-name.
6030 TFF_EXPR_IN_PARENS: parenthesize expressions.
6031 TFF_NO_FUNCTION_ARGUMENTS: don't show function arguments.
6032 TFF_UNQUALIFIED_NAME: do not print the qualifying scope of the
6033 top-level entity.
6034 TFF_NO_OMIT_DEFAULT_TEMPLATE_ARGUMENTS: do not omit template arguments
6035 identical to their defaults.
6036 TFF_NO_TEMPLATE_BINDINGS: do not print information about the template
6037 arguments for a function template specialization.
6038 TFF_POINTER: we are printing a pointer type. */
6039
6040 #define TFF_PLAIN_IDENTIFIER (0)
6041 #define TFF_SCOPE (1)
6042 #define TFF_CHASE_TYPEDEF (1 << 1)
6043 #define TFF_DECL_SPECIFIERS (1 << 2)
6044 #define TFF_CLASS_KEY_OR_ENUM (1 << 3)
6045 #define TFF_RETURN_TYPE (1 << 4)
6046 #define TFF_FUNCTION_DEFAULT_ARGUMENTS (1 << 5)
6047 #define TFF_EXCEPTION_SPECIFICATION (1 << 6)
6048 #define TFF_TEMPLATE_HEADER (1 << 7)
6049 #define TFF_TEMPLATE_NAME (1 << 8)
6050 #define TFF_EXPR_IN_PARENS (1 << 9)
6051 #define TFF_NO_FUNCTION_ARGUMENTS (1 << 10)
6052 #define TFF_UNQUALIFIED_NAME (1 << 11)
6053 #define TFF_NO_OMIT_DEFAULT_TEMPLATE_ARGUMENTS (1 << 12)
6054 #define TFF_NO_TEMPLATE_BINDINGS (1 << 13)
6055 #define TFF_POINTER (1 << 14)
6056
6057 /* These constants can be used as bit flags to control strip_typedefs.
6058
6059 STF_USER_VISIBLE: use heuristics to try to avoid stripping user-facing
6060 aliases of internal details. This is intended for diagnostics,
6061 where it should (for example) give more useful "aka" types.
6062
6063 STF_STRIP_DEPENDENT: allow the stripping of aliases with dependent
6064 template parameters, relying on code elsewhere to report any
6065 appropriate diagnostics. */
6066 const unsigned int STF_USER_VISIBLE = 1U;
6067 const unsigned int STF_STRIP_DEPENDENT = 1U << 1;
6068
6069 /* Returns the TEMPLATE_DECL associated to a TEMPLATE_TEMPLATE_PARM
6070 node. */
6071 #define TEMPLATE_TEMPLATE_PARM_TEMPLATE_DECL(NODE) \
6072 ((TREE_CODE (NODE) == BOUND_TEMPLATE_TEMPLATE_PARM) \
6073 ? TYPE_TI_TEMPLATE (NODE) \
6074 : TYPE_NAME (NODE))
6075
6076 /* in lex.cc */
6077
6078 extern void init_reswords (void);
6079
6080 /* Various flags for the overloaded operator information. */
6081 enum ovl_op_flags {
6082 OVL_OP_FLAG_NONE = 0, /* Don't care. */
6083 OVL_OP_FLAG_UNARY = 1, /* Is unary. */
6084 OVL_OP_FLAG_BINARY = 2, /* Is binary. */
6085 OVL_OP_FLAG_AMBIARY = 3, /* May be unary or binary. */
6086 OVL_OP_FLAG_ALLOC = 4, /* operator new or delete. */
6087 OVL_OP_FLAG_DELETE = 1, /* operator delete. */
6088 OVL_OP_FLAG_VEC = 2 /* vector new or delete. */
6089 };
6090
6091 /* Compressed operator codes. Order is determined by operators.def
6092 and does not match that of tree_codes. */
6093 enum ovl_op_code {
6094 OVL_OP_ERROR_MARK,
6095 OVL_OP_NOP_EXPR,
6096 #define DEF_OPERATOR(NAME, CODE, MANGLING, FLAGS) OVL_OP_##CODE,
6097 #define DEF_ASSN_OPERATOR(NAME, CODE, MANGLING) /* NOTHING */
6098 #include "operators.def"
6099 OVL_OP_MAX
6100 };
6101
6102 /* Make sure it fits in lang_decl_fn::ovl_op_code. */
6103 STATIC_ASSERT (OVL_OP_MAX < (1 << 6));
6104
6105 struct GTY(()) ovl_op_info_t {
6106 /* The IDENTIFIER_NODE for the operator. */
6107 tree identifier;
6108 /* The name of the operator. */
6109 const char *name;
6110 /* The mangled name of the operator. */
6111 const char *mangled_name;
6112 /* The (regular) tree code. */
6113 enum tree_code tree_code : 16;
6114 /* The (compressed) operator code. */
6115 enum ovl_op_code ovl_op_code : 8;
6116 /* The ovl_op_flags of the operator */
6117 unsigned flags : 8;
6118 };
6119
6120 /* Overloaded operator info indexed by ass_op_p & ovl_op_code. */
6121 extern GTY(()) ovl_op_info_t ovl_op_info[2][OVL_OP_MAX];
6122 /* Mapping from tree_codes to ovl_op_codes. */
6123 extern GTY(()) unsigned char ovl_op_mapping[MAX_TREE_CODES];
6124 /* Mapping for ambi-ary operators from the binary to the unary. */
6125 extern GTY(()) unsigned char ovl_op_alternate[OVL_OP_MAX];
6126
6127 /* Given an ass_op_p boolean and a tree code, return a pointer to its
6128 overloaded operator info. Tree codes for non-overloaded operators
6129 map to the error-operator. */
6130 #define OVL_OP_INFO(IS_ASS_P, TREE_CODE) \
6131 (&ovl_op_info[(IS_ASS_P) != 0][ovl_op_mapping[(TREE_CODE)]])
6132 /* Overloaded operator info for an identifier for which
6133 IDENTIFIER_OVL_OP_P is true. */
6134 #define IDENTIFIER_OVL_OP_INFO(NODE) \
6135 (&ovl_op_info[IDENTIFIER_KIND_BIT_0 (NODE)][IDENTIFIER_CP_INDEX (NODE)])
6136 #define IDENTIFIER_OVL_OP_FLAGS(NODE) \
6137 (IDENTIFIER_OVL_OP_INFO (NODE)->flags)
6138
ovl_op_identifier(bool isass,tree_code code)6139 inline tree ovl_op_identifier (bool isass, tree_code code)
6140 { return OVL_OP_INFO(isass, code)->identifier; }
ovl_op_identifier(tree_code code)6141 inline tree ovl_op_identifier (tree_code code) { return ovl_op_identifier (false, code); }
6142 #define assign_op_identifier (ovl_op_info[true][OVL_OP_NOP_EXPR].identifier)
6143 #define call_op_identifier (ovl_op_info[false][OVL_OP_CALL_EXPR].identifier)
6144
6145 /* A type-qualifier, or bitmask therefore, using the TYPE_QUAL
6146 constants. */
6147
6148 typedef int cp_cv_quals;
6149
6150 /* Non-static member functions have an optional virt-specifier-seq.
6151 There is a VIRT_SPEC value for each virt-specifier.
6152 They can be combined by bitwise-or to form the complete set of
6153 virt-specifiers for a member function. */
6154 enum virt_specifier
6155 {
6156 VIRT_SPEC_UNSPECIFIED = 0x0,
6157 VIRT_SPEC_FINAL = 0x1,
6158 VIRT_SPEC_OVERRIDE = 0x2
6159 };
6160
6161 /* A type-qualifier, or bitmask therefore, using the VIRT_SPEC
6162 constants. */
6163
6164 typedef int cp_virt_specifiers;
6165
6166 /* Wherever there is a function-cv-qual, there could also be a ref-qualifier:
6167
6168 [dcl.fct]
6169 The return type, the parameter-type-list, the ref-qualifier, and
6170 the cv-qualifier-seq, but not the default arguments or the exception
6171 specification, are part of the function type.
6172
6173 REF_QUAL_NONE Ordinary member function with no ref-qualifier
6174 REF_QUAL_LVALUE Member function with the &-ref-qualifier
6175 REF_QUAL_RVALUE Member function with the &&-ref-qualifier */
6176
6177 enum cp_ref_qualifier {
6178 REF_QUAL_NONE = 0,
6179 REF_QUAL_LVALUE = 1,
6180 REF_QUAL_RVALUE = 2
6181 };
6182
6183 /* A storage class. */
6184
6185 enum cp_storage_class {
6186 /* sc_none must be zero so that zeroing a cp_decl_specifier_seq
6187 sets the storage_class field to sc_none. */
6188 sc_none = 0,
6189 sc_auto,
6190 sc_register,
6191 sc_static,
6192 sc_extern,
6193 sc_mutable
6194 };
6195
6196 /* An individual decl-specifier. This is used to index the array of
6197 locations for the declspecs in struct cp_decl_specifier_seq
6198 below. */
6199
6200 enum cp_decl_spec {
6201 ds_first,
6202 ds_signed = ds_first,
6203 ds_unsigned,
6204 ds_short,
6205 ds_long,
6206 ds_const,
6207 ds_volatile,
6208 ds_restrict,
6209 ds_inline,
6210 ds_virtual,
6211 ds_explicit,
6212 ds_friend,
6213 ds_typedef,
6214 ds_alias,
6215 ds_constexpr,
6216 ds_complex,
6217 ds_constinit,
6218 ds_consteval,
6219 ds_thread,
6220 ds_type_spec,
6221 ds_redefined_builtin_type_spec,
6222 ds_attribute,
6223 ds_std_attribute,
6224 ds_storage_class,
6225 ds_long_long,
6226 ds_concept,
6227 ds_last /* This enumerator must always be the last one. */
6228 };
6229
6230 /* A decl-specifier-seq. */
6231
6232 struct cp_decl_specifier_seq {
6233 /* An array of locations for the declaration sepecifiers, indexed by
6234 enum cp_decl_spec_word. */
6235 location_t locations[ds_last];
6236 /* The primary type, if any, given by the decl-specifier-seq.
6237 Modifiers, like "short", "const", and "unsigned" are not
6238 reflected here. This field will be a TYPE, unless a typedef-name
6239 was used, in which case it will be a TYPE_DECL. */
6240 tree type;
6241 /* The attributes, if any, provided with the specifier sequence. */
6242 tree attributes;
6243 /* The c++11 attributes that follows the type specifier. */
6244 tree std_attributes;
6245 /* If non-NULL, a built-in type that the user attempted to redefine
6246 to some other type. */
6247 tree redefined_builtin_type;
6248 /* The explicit-specifier, if any. */
6249 tree explicit_specifier;
6250 /* The storage class specified -- or sc_none if no storage class was
6251 explicitly specified. */
6252 cp_storage_class storage_class;
6253 /* For the __intN declspec, this stores the index into the int_n_* arrays. */
6254 int int_n_idx;
6255 /* True iff TYPE_SPEC defines a class or enum. */
6256 BOOL_BITFIELD type_definition_p : 1;
6257 /* True iff multiple types were (erroneously) specified for this
6258 decl-specifier-seq. */
6259 BOOL_BITFIELD multiple_types_p : 1;
6260 /* True iff multiple storage classes were (erroneously) specified
6261 for this decl-specifier-seq or a combination of a storage class
6262 with a typedef specifier. */
6263 BOOL_BITFIELD conflicting_specifiers_p : 1;
6264 /* True iff at least one decl-specifier was found. */
6265 BOOL_BITFIELD any_specifiers_p : 1;
6266 /* True iff at least one type-specifier was found. */
6267 BOOL_BITFIELD any_type_specifiers_p : 1;
6268 /* True iff "int" was explicitly provided. */
6269 BOOL_BITFIELD explicit_int_p : 1;
6270 /* True iff "__intN" was explicitly provided. */
6271 BOOL_BITFIELD explicit_intN_p : 1;
6272 /* True iff "char" was explicitly provided. */
6273 BOOL_BITFIELD explicit_char_p : 1;
6274 /* True iff ds_thread is set for __thread, not thread_local. */
6275 BOOL_BITFIELD gnu_thread_keyword_p : 1;
6276 /* True iff the type is a decltype. */
6277 BOOL_BITFIELD decltype_p : 1;
6278 /* True iff the alternate "__intN__" form of the __intN type has been
6279 used. */
6280 BOOL_BITFIELD int_n_alt: 1;
6281 };
6282
6283 /* The various kinds of declarators. */
6284
6285 enum cp_declarator_kind {
6286 cdk_id,
6287 cdk_function,
6288 cdk_array,
6289 cdk_pointer,
6290 cdk_reference,
6291 cdk_ptrmem,
6292 cdk_decomp,
6293 cdk_error
6294 };
6295
6296 /* A declarator. */
6297
6298 typedef struct cp_declarator cp_declarator;
6299
6300 typedef struct cp_parameter_declarator cp_parameter_declarator;
6301
6302 /* A parameter, before it has been semantically analyzed. */
6303 struct cp_parameter_declarator {
6304 /* The next parameter, or NULL_TREE if none. */
6305 cp_parameter_declarator *next;
6306 /* The decl-specifiers-seq for the parameter. */
6307 cp_decl_specifier_seq decl_specifiers;
6308 /* The declarator for the parameter. */
6309 cp_declarator *declarator;
6310 /* The default-argument expression, or NULL_TREE, if none. */
6311 tree default_argument;
6312 /* True iff this is a template parameter pack. */
6313 bool template_parameter_pack_p;
6314 /* Location within source. */
6315 location_t loc;
6316 };
6317
6318 /* A declarator. */
6319 struct cp_declarator {
6320 /* The kind of declarator. */
6321 ENUM_BITFIELD (cp_declarator_kind) kind : 4;
6322 /* Whether we parsed an ellipsis (`...') just before the declarator,
6323 to indicate this is a parameter pack. */
6324 BOOL_BITFIELD parameter_pack_p : 1;
6325 /* If this declarator is parenthesized, this the open-paren. It is
6326 UNKNOWN_LOCATION when not parenthesized. */
6327 location_t parenthesized;
6328 /* Currently only set for cdk_id, cdk_decomp and cdk_function. */
6329 location_t id_loc;
6330 /* If this declarator is part of an init-declarator, the location of the
6331 initializer. */
6332 location_t init_loc;
6333 /* GNU Attributes that apply to this declarator. If the declarator
6334 is a pointer or a reference, these attribute apply to the type
6335 pointed to. */
6336 tree attributes;
6337 /* Standard C++11 attributes that apply to this declarator. If the
6338 declarator is a pointer or a reference, these attributes apply
6339 to the pointer, rather than to the type pointed to. */
6340 tree std_attributes;
6341 /* For all but cdk_id, cdk_decomp and cdk_error, the contained declarator.
6342 For cdk_id, cdk_decomp and cdk_error, guaranteed to be NULL. */
6343 cp_declarator *declarator;
6344 union {
6345 /* For identifiers. */
6346 struct {
6347 /* If non-NULL, the qualifying scope (a NAMESPACE_DECL or
6348 *_TYPE) for this identifier. */
6349 tree qualifying_scope;
6350 /* The unqualified name of the entity -- an IDENTIFIER_NODE,
6351 BIT_NOT_EXPR, or TEMPLATE_ID_EXPR. */
6352 tree unqualified_name;
6353 /* If this is the name of a function, what kind of special
6354 function (if any). */
6355 special_function_kind sfk;
6356 } id;
6357 /* For functions. */
6358 struct {
6359 /* The parameters to the function as a TREE_LIST of decl/default. */
6360 tree parameters;
6361 /* The cv-qualifiers for the function. */
6362 cp_cv_quals qualifiers;
6363 /* The virt-specifiers for the function. */
6364 cp_virt_specifiers virt_specifiers;
6365 /* The ref-qualifier for the function. */
6366 cp_ref_qualifier ref_qualifier;
6367 /* The transaction-safety qualifier for the function. */
6368 tree tx_qualifier;
6369 /* The exception-specification for the function. */
6370 tree exception_specification;
6371 /* The late-specified return type, if any. */
6372 tree late_return_type;
6373 /* The trailing requires-clause, if any. */
6374 tree requires_clause;
6375 location_t parens_loc;
6376 } function;
6377 /* For arrays. */
6378 struct {
6379 /* The bounds to the array. */
6380 tree bounds;
6381 } array;
6382 /* For cdk_pointer and cdk_ptrmem. */
6383 struct {
6384 /* The cv-qualifiers for the pointer. */
6385 cp_cv_quals qualifiers;
6386 /* For cdk_ptrmem, the class type containing the member. */
6387 tree class_type;
6388 } pointer;
6389 /* For cdk_reference */
6390 struct {
6391 /* The cv-qualifiers for the reference. These qualifiers are
6392 only used to diagnose ill-formed code. */
6393 cp_cv_quals qualifiers;
6394 /* Whether this is an rvalue reference */
6395 bool rvalue_ref;
6396 } reference;
6397 } u;
6398 };
6399
6400 /* A level of template instantiation. */
6401 struct GTY((chain_next ("%h.next"))) tinst_level {
6402 /* The immediately deeper level in the chain. */
6403 struct tinst_level *next;
6404
6405 /* The original node. TLDCL can be a DECL (for a function or static
6406 data member), a TYPE (for a class), depending on what we were
6407 asked to instantiate, or a TREE_LIST with the template as PURPOSE
6408 and the template args as VALUE, if we are substituting for
6409 overload resolution. In all these cases, TARGS is NULL.
6410 However, to avoid creating TREE_LIST objects for substitutions if
6411 we can help, we store PURPOSE and VALUE in TLDCL and TARGS,
6412 respectively. So TLDCL stands for TREE_LIST or DECL (the
6413 template is a DECL too), whereas TARGS stands for the template
6414 arguments. */
6415 tree tldcl, targs;
6416
6417 /* For modules we need to know (a) the modules on the path of
6418 instantiation and (b) the transitive imports along that path.
6419 Note that these two bitmaps may be inherited from NEXT, if this
6420 decl is in the same module as NEXT (or has no new information). */
6421 bitmap path;
6422 bitmap visible;
6423
6424 private:
6425 /* Return TRUE iff the original node is a split list. */
split_list_ptinst_level6426 bool split_list_p () const { return targs; }
6427
6428 /* Return TRUE iff the original node is a TREE_LIST object. */
tree_list_ptinst_level6429 bool tree_list_p () const
6430 {
6431 return !split_list_p () && TREE_CODE (tldcl) == TREE_LIST;
6432 }
6433
6434 /* Return TRUE iff the original node is not a list, split or not. */
not_list_ptinst_level6435 bool not_list_p () const
6436 {
6437 return !split_list_p () && !tree_list_p ();
6438 }
6439
6440 /* Convert (in place) the original node from a split list to a
6441 TREE_LIST. */
6442 tree to_list ();
6443
6444 public:
6445 /* Release storage for OBJ and node, if it's a TREE_LIST. */
6446 static void free (tinst_level *obj);
6447
6448 /* Return TRUE iff the original node is a list, split or not. */
list_ptinst_level6449 bool list_p () const { return !not_list_p (); }
6450
6451 /* Return the original node; if it's a split list, make it a
6452 TREE_LIST first, so that it can be returned as a single tree
6453 object. */
get_nodetinst_level6454 tree get_node () {
6455 if (!split_list_p ()) return tldcl;
6456 else return to_list ();
6457 }
6458
6459 /* Return the original node if it's a DECL or a TREE_LIST, but do
6460 NOT convert a split list to a TREE_LIST: return NULL instead. */
maybe_get_nodetinst_level6461 tree maybe_get_node () const {
6462 if (!split_list_p ()) return tldcl;
6463 else return NULL_TREE;
6464 }
6465
6466 /* The location where the template is instantiated. */
6467 location_t locus;
6468
6469 /* errorcount + sorrycount when we pushed this level. */
6470 unsigned short errors;
6471
6472 /* Count references to this object. If refcount reaches
6473 refcount_infinity value, we don't increment or decrement the
6474 refcount anymore, as the refcount isn't accurate anymore.
6475 The object can be still garbage collected if unreferenced from
6476 anywhere, which might keep referenced objects referenced longer than
6477 otherwise necessary. Hitting the infinity is rare though. */
6478 unsigned short refcount;
6479
6480 /* Infinity value for the above refcount. */
6481 static const unsigned short refcount_infinity = (unsigned short) ~0;
6482 };
6483
6484 /* BUILT_IN_FRONTEND function codes. */
6485 enum cp_built_in_function {
6486 CP_BUILT_IN_IS_CONSTANT_EVALUATED,
6487 CP_BUILT_IN_INTEGER_PACK,
6488 CP_BUILT_IN_IS_CORRESPONDING_MEMBER,
6489 CP_BUILT_IN_IS_POINTER_INTERCONVERTIBLE_WITH_CLASS,
6490 CP_BUILT_IN_SOURCE_LOCATION,
6491 CP_BUILT_IN_LAST
6492 };
6493
6494 bool decl_spec_seq_has_spec_p (const cp_decl_specifier_seq *, cp_decl_spec);
6495
6496 /* Return the type of the `this' parameter of FNTYPE. */
6497
6498 inline tree
type_of_this_parm(const_tree fntype)6499 type_of_this_parm (const_tree fntype)
6500 {
6501 function_args_iterator iter;
6502 gcc_assert (TREE_CODE (fntype) == METHOD_TYPE);
6503 function_args_iter_init (&iter, fntype);
6504 return function_args_iter_cond (&iter);
6505 }
6506
6507 /* Return the class of the `this' parameter of FNTYPE. */
6508
6509 inline tree
class_of_this_parm(const_tree fntype)6510 class_of_this_parm (const_tree fntype)
6511 {
6512 return TREE_TYPE (type_of_this_parm (fntype));
6513 }
6514
6515 /* A parameter list indicating for a function with no parameters,
6516 e.g "int f(void)". */
6517 extern cp_parameter_declarator *no_parameters;
6518
6519 /* Various dump ids. */
6520 extern int class_dump_id;
6521 extern int module_dump_id;
6522 extern int raw_dump_id;
6523
6524 /* in call.cc */
6525 extern bool check_dtor_name (tree, tree);
6526 int magic_varargs_p (tree);
6527
6528 extern tree build_conditional_expr (const op_location_t &,
6529 tree, tree, tree,
6530 tsubst_flags_t);
6531 extern tree build_addr_func (tree, tsubst_flags_t);
6532 extern void set_flags_from_callee (tree);
6533 extern tree build_call_a (tree, int, tree*);
6534 extern tree build_call_n (tree, int, ...);
6535 extern bool null_ptr_cst_p (tree);
6536 extern bool null_member_pointer_value_p (tree);
6537 extern bool sufficient_parms_p (const_tree);
6538 extern tree type_decays_to (tree);
6539 extern tree extract_call_expr (tree);
6540 extern tree build_trivial_dtor_call (tree, bool = false);
6541 extern bool ref_conv_binds_directly_p (tree, tree);
6542 extern tree build_user_type_conversion (tree, tree, int,
6543 tsubst_flags_t);
6544 extern tree build_new_function_call (tree, vec<tree, va_gc> **,
6545 tsubst_flags_t);
6546 extern tree build_operator_new_call (tree, vec<tree, va_gc> **,
6547 tree *, tree *, tree, tree,
6548 tree *, tsubst_flags_t);
6549 extern tree build_new_method_call (tree, tree,
6550 vec<tree, va_gc> **, tree,
6551 int, tree *, tsubst_flags_t);
6552 extern tree build_special_member_call (tree, tree,
6553 vec<tree, va_gc> **,
6554 tree, int, tsubst_flags_t);
6555 extern tree build_new_op (const op_location_t &,
6556 enum tree_code,
6557 int, tree, tree, tree, tree,
6558 tree *, tsubst_flags_t);
6559 /* Wrapper that leaves out the usually-null op3 and overload parms. */
build_new_op(const op_location_t & loc,enum tree_code code,int flags,tree arg1,tree arg2,tsubst_flags_t complain)6560 inline tree build_new_op (const op_location_t &loc, enum tree_code code,
6561 int flags, tree arg1, tree arg2,
6562 tsubst_flags_t complain)
6563 {
6564 return build_new_op (loc, code, flags, arg1, arg2, NULL_TREE, NULL_TREE,
6565 NULL, complain);
6566 }
6567 extern tree build_op_call (tree, vec<tree, va_gc> **,
6568 tsubst_flags_t);
6569 extern tree build_op_subscript (const op_location_t &, tree,
6570 vec<tree, va_gc> **, tree *,
6571 tsubst_flags_t);
6572 extern bool aligned_allocation_fn_p (tree);
6573 extern tree destroying_delete_p (tree);
6574 extern bool usual_deallocation_fn_p (tree);
6575 extern tree build_op_delete_call (enum tree_code, tree, tree,
6576 bool, tree, tree,
6577 tsubst_flags_t);
6578 extern bool can_convert (tree, tree, tsubst_flags_t);
6579 extern bool can_convert_standard (tree, tree, tsubst_flags_t);
6580 extern bool can_convert_arg (tree, tree, tree, int,
6581 tsubst_flags_t);
6582 extern bool can_convert_arg_bad (tree, tree, tree, int,
6583 tsubst_flags_t);
6584 extern int conv_flags (int, int, tree, tree, int);
6585 extern struct conversion * good_conversion (tree, tree, tree, int, tsubst_flags_t);
6586 extern location_t get_fndecl_argument_location (tree, int);
6587 extern void complain_about_bad_argument (location_t arg_loc,
6588 tree from_type, tree to_type,
6589 tree fndecl, int parmnum);
6590 extern void maybe_inform_about_fndecl_for_bogus_argument_init (tree, int);
6591 extern tree perform_dguide_overload_resolution (tree, const vec<tree, va_gc> *,
6592 tsubst_flags_t);
6593
6594
6595 /* A class for recording information about access failures (e.g. private
6596 fields), so that we can potentially supply a fix-it hint about
6597 an accessor (from a context in which the constness of the object
6598 is known). */
6599
6600 class access_failure_info
6601 {
6602 public:
access_failure_info()6603 access_failure_info () : m_was_inaccessible (false),
6604 m_basetype_path (NULL_TREE),
6605 m_decl (NULL_TREE), m_diag_decl (NULL_TREE) {}
6606
6607 void record_access_failure (tree basetype_path, tree decl, tree diag_decl);
6608
was_inaccessible_p()6609 bool was_inaccessible_p () const { return m_was_inaccessible; }
get_decl()6610 tree get_decl () const { return m_decl; }
get_diag_decl()6611 tree get_diag_decl () const { return m_diag_decl; }
6612 tree get_any_accessor (bool const_p) const;
6613 void maybe_suggest_accessor (bool const_p) const;
6614 static void add_fixit_hint (rich_location *richloc, tree accessor);
6615
6616 private:
6617 bool m_was_inaccessible;
6618 tree m_basetype_path;
6619 tree m_decl;
6620 tree m_diag_decl;
6621 };
6622
6623 extern void complain_about_access (tree, tree, tree, bool,
6624 access_kind);
6625 extern void push_defarg_context (tree);
6626 extern void pop_defarg_context (void);
6627 extern tree convert_default_arg (tree, tree, tree, int,
6628 tsubst_flags_t);
6629 extern tree convert_arg_to_ellipsis (tree, tsubst_flags_t);
6630 extern tree build_x_va_arg (location_t, tree, tree);
6631 extern tree cxx_type_promotes_to (tree);
6632 extern tree type_passed_as (tree);
6633 extern tree convert_for_arg_passing (tree, tree, tsubst_flags_t);
6634 extern bool is_properly_derived_from (tree, tree);
6635 extern tree initialize_reference (tree, tree, int,
6636 tsubst_flags_t);
6637 extern tree extend_ref_init_temps (tree, tree,
6638 vec<tree, va_gc>**,
6639 tree * = NULL);
6640 extern tree make_temporary_var_for_ref_to_temp (tree, tree);
6641 extern bool type_has_extended_temps (tree);
6642 extern tree strip_top_quals (tree);
6643 extern bool reference_related_p (tree, tree);
6644 extern bool reference_compatible_p (tree, tree);
6645 extern int remaining_arguments (tree);
6646 extern tree build_implicit_conv_flags (tree, tree, int);
6647 extern tree perform_implicit_conversion (tree, tree, tsubst_flags_t);
6648 extern tree perform_implicit_conversion_flags (tree, tree, tsubst_flags_t, int);
6649 extern tree build_converted_constant_expr (tree, tree, tsubst_flags_t);
6650 extern tree build_converted_constant_bool_expr (tree, tsubst_flags_t);
6651 extern tree perform_direct_initialization_if_possible (tree, tree, bool,
6652 tsubst_flags_t);
6653 extern vec<tree,va_gc> *resolve_args (vec<tree,va_gc>*, tsubst_flags_t);
6654 extern tree in_charge_arg_for_name (tree);
6655 extern bool in_immediate_context ();
6656 extern tree build_cxx_call (tree, int, tree *,
6657 tsubst_flags_t,
6658 tree = NULL_TREE);
6659 extern bool is_std_init_list (tree);
6660 extern bool is_list_ctor (tree);
6661 extern void validate_conversion_obstack (void);
6662 extern void mark_versions_used (tree);
6663 extern int unsafe_return_slot_p (tree);
6664 extern bool make_safe_copy_elision (tree, tree);
6665 extern bool cp_handle_deprecated_or_unavailable (tree, tsubst_flags_t = tf_warning_or_error);
6666 extern void cp_warn_deprecated_use_scopes (tree);
6667 extern tree get_function_version_dispatcher (tree);
6668
6669 /* in class.cc */
6670 extern tree build_vfield_ref (tree, tree);
6671 extern tree build_if_in_charge (tree true_stmt, tree false_stmt = void_node);
6672 extern tree build_base_path (enum tree_code, tree,
6673 tree, int, tsubst_flags_t);
6674 extern tree convert_to_base (tree, tree, bool, bool,
6675 tsubst_flags_t);
6676 extern tree convert_to_base_statically (tree, tree);
6677 extern bool is_empty_base_ref (tree);
6678 extern tree build_vtbl_ref (tree, tree);
6679 extern tree build_vfn_ref (tree, tree);
6680 extern tree get_vtable_decl (tree, int);
6681 extern bool add_method (tree, tree, bool);
6682 extern tree declared_access (tree);
6683 extern bool maybe_push_used_methods (tree);
6684 extern tree currently_open_class (tree);
6685 extern tree currently_open_derived_class (tree);
6686 extern tree outermost_open_class (void);
6687 extern tree current_nonlambda_class_type (void);
6688 extern tree finish_struct (tree, tree);
6689 extern void finish_struct_1 (tree);
6690 extern int resolves_to_fixed_type_p (tree, int * = NULL);
6691 extern void init_class_processing (void);
6692 extern int is_empty_class (tree);
6693 extern bool is_really_empty_class (tree, bool);
6694 extern void pushclass (tree);
6695 extern void popclass (void);
6696 extern void push_nested_class (tree);
6697 extern void pop_nested_class (void);
6698 extern int current_lang_depth (void);
6699 extern void push_lang_context (tree);
6700 extern void pop_lang_context (void);
6701 extern tree instantiate_type (tree, tree, tsubst_flags_t);
6702 extern void build_self_reference (void);
6703 extern int same_signature_p (const_tree, const_tree);
6704 extern tree lookup_vfn_in_binfo (tree, tree);
6705 extern void maybe_add_class_template_decl_list (tree, tree, int);
6706 extern void unreverse_member_declarations (tree);
6707 extern bool is_empty_field (tree);
6708 extern void invalidate_class_lookup_cache (void);
6709 extern void maybe_note_name_used_in_class (tree, tree);
6710 extern void note_name_declared_in_class (tree, tree);
6711 extern tree get_vtbl_decl_for_binfo (tree);
6712 extern bool vptr_via_virtual_p (tree);
6713 extern void debug_class (tree);
6714 extern void debug_thunks (tree);
6715 extern void set_linkage_according_to_type (tree, tree);
6716 extern void determine_key_method (tree);
6717 extern void check_for_override (tree, tree);
6718 extern void push_class_stack (void);
6719 extern void pop_class_stack (void);
6720 extern bool default_ctor_p (const_tree);
6721 extern bool type_has_user_nondefault_constructor (tree);
6722 extern tree in_class_defaulted_default_constructor (tree);
6723 extern bool user_provided_p (tree);
6724 extern bool type_has_user_provided_constructor (tree);
6725 extern bool type_has_non_user_provided_default_constructor (tree);
6726 extern bool vbase_has_user_provided_move_assign (tree);
6727 extern tree default_init_uninitialized_part (tree);
6728 extern bool trivial_default_constructor_is_constexpr (tree);
6729 extern bool type_has_constexpr_default_constructor (tree);
6730 extern bool type_has_constexpr_destructor (tree);
6731 extern bool type_has_virtual_destructor (tree);
6732 extern bool classtype_has_move_assign_or_move_ctor_p (tree, bool user_declared);
6733 extern bool classtype_has_non_deleted_move_ctor (tree);
6734 extern tree classtype_has_depr_implicit_copy (tree);
6735 extern bool classtype_has_op (tree, tree_code);
6736 extern tree classtype_has_defaulted_op (tree, tree_code);
6737 extern bool type_build_ctor_call (tree);
6738 extern bool type_build_dtor_call (tree);
6739 extern void explain_non_literal_class (tree);
6740 extern void inherit_targ_abi_tags (tree);
6741 extern void defaulted_late_check (tree);
6742 extern bool defaultable_fn_check (tree);
6743 extern void check_abi_tags (tree);
6744 extern tree missing_abi_tags (tree);
6745 extern void fixup_type_variants (tree);
6746 extern void fixup_attribute_variants (tree);
6747 extern void build_cdtor_clones (tree, bool, bool, bool);
6748 extern void clone_cdtor (tree, bool);
6749 extern tree copy_operator_fn (tree, tree_code code);
6750 extern void adjust_clone_args (tree);
6751 extern void deduce_noexcept_on_destructor (tree);
6752 extern bool uniquely_derived_from_p (tree, tree);
6753 extern bool publicly_uniquely_derived_p (tree, tree);
6754 extern tree common_enclosing_class (tree, tree);
6755
6756 /* in cvt.cc */
6757 extern tree convert_to_reference (tree, tree, int, int, tree,
6758 tsubst_flags_t);
6759 extern tree convert_from_reference (tree);
6760 extern tree force_rvalue (tree, tsubst_flags_t);
6761 extern tree ocp_convert (tree, tree, int, int,
6762 tsubst_flags_t);
6763 extern tree cp_convert (tree, tree, tsubst_flags_t);
6764 extern tree cp_convert_and_check (tree, tree, tsubst_flags_t);
6765 extern tree cp_fold_convert (tree, tree);
6766 extern tree cp_get_callee (tree);
6767 extern tree cp_get_callee_fndecl (tree);
6768 extern tree cp_get_callee_fndecl_nofold (tree);
6769 extern tree cp_get_fndecl_from_callee (tree, bool fold = true);
6770 extern tree convert_to_void (tree, impl_conv_void,
6771 tsubst_flags_t);
6772 extern tree convert_force (tree, tree, int,
6773 tsubst_flags_t);
6774 extern tree build_expr_type_conversion (int, tree, bool);
6775 extern tree type_promotes_to (tree);
6776 extern bool can_convert_qual (tree, tree);
6777 extern tree perform_qualification_conversions (tree, tree);
6778 extern bool tx_safe_fn_type_p (tree);
6779 extern tree tx_unsafe_fn_variant (tree);
6780 extern bool fnptr_conv_p (tree, tree);
6781 extern tree strip_fnptr_conv (tree);
6782
6783 /* in name-lookup.cc */
6784 extern void maybe_push_cleanup_level (tree);
6785 extern tree maybe_push_decl (tree);
6786 extern tree current_decl_namespace (void);
6787
6788 /* decl.cc */
6789 extern tree poplevel (int, int, int);
6790 extern void cxx_init_decl_processing (void);
6791 enum cp_tree_node_structure_enum cp_tree_node_structure
6792 (union lang_tree_node *);
6793 extern void finish_scope (void);
6794 extern void push_switch (tree);
6795 extern void pop_switch (void);
6796 extern void note_break_stmt (void);
6797 extern bool note_iteration_stmt_body_start (void);
6798 extern void note_iteration_stmt_body_end (bool);
6799 extern void determine_local_discriminator (tree);
6800 extern int decls_match (tree, tree, bool = true);
6801 extern bool maybe_version_functions (tree, tree, bool);
6802 extern bool merge_default_template_args (tree, tree, bool);
6803 extern tree duplicate_decls (tree, tree,
6804 bool hiding = false,
6805 bool was_hidden = false);
6806 extern tree declare_local_label (tree);
6807 extern tree define_label (location_t, tree);
6808 extern void check_goto (tree);
6809 extern bool check_omp_return (void);
6810 extern tree make_typename_type (tree, tree, enum tag_types, tsubst_flags_t);
6811 extern tree build_typename_type (tree, tree, tree, tag_types);
6812 extern tree make_unbound_class_template (tree, tree, tree, tsubst_flags_t);
6813 extern tree make_unbound_class_template_raw (tree, tree, tree);
6814 extern unsigned push_abi_namespace (tree node = abi_node);
6815 extern void pop_abi_namespace (unsigned flags,
6816 tree node = abi_node);
6817 extern tree build_library_fn_ptr (const char *, tree, int);
6818 extern tree build_cp_library_fn_ptr (const char *, tree, int);
6819 extern tree push_library_fn (tree, tree, tree, int);
6820 extern tree push_throw_library_fn (tree, tree);
6821 extern void warn_misplaced_attr_for_class_type (location_t location,
6822 tree class_type);
6823 extern tree check_tag_decl (cp_decl_specifier_seq *, bool);
6824 extern tree shadow_tag (cp_decl_specifier_seq *);
6825 extern tree groktypename (cp_decl_specifier_seq *, const cp_declarator *, bool);
6826 extern tree start_decl (const cp_declarator *, cp_decl_specifier_seq *, int, tree, tree, tree *);
6827 extern void start_decl_1 (tree, bool);
6828 extern bool check_array_initializer (tree, tree, tree);
6829 extern void omp_declare_variant_finalize (tree, tree);
6830 extern void cp_finish_decl (tree, tree, bool, tree, int);
6831 extern tree lookup_decomp_type (tree);
6832 extern void cp_maybe_mangle_decomp (tree, tree, unsigned int);
6833 extern void cp_finish_decomp (tree, tree, unsigned int);
6834 extern int cp_complete_array_type (tree *, tree, bool);
6835 extern int cp_complete_array_type_or_error (tree *, tree, bool, tsubst_flags_t);
6836 extern tree build_ptrmemfunc_type (tree);
6837 extern tree build_ptrmem_type (tree, tree);
6838 /* the grokdeclarator prototype is in decl.h */
6839 extern tree build_this_parm (tree, tree, cp_cv_quals);
6840 extern tree grokparms (tree, tree *);
6841 extern int copy_fn_p (const_tree);
6842 extern bool move_fn_p (const_tree);
6843 extern bool move_signature_fn_p (const_tree);
6844 extern tree get_scope_of_declarator (const cp_declarator *);
6845 extern void grok_special_member_properties (tree);
6846 extern bool grok_ctor_properties (const_tree, const_tree);
6847 extern bool grok_op_properties (tree, bool);
6848 extern tree xref_tag (tag_types, tree,
6849 TAG_how = TAG_how::CURRENT_ONLY,
6850 bool tpl_header_p = false);
6851 extern void xref_basetypes (tree, tree);
6852 extern tree start_enum (tree, tree, tree, tree, bool, bool *);
6853 extern void finish_enum_value_list (tree);
6854 extern void finish_enum (tree);
6855 extern tree build_enumerator (tree, tree, tree, tree, location_t);
6856 extern tree lookup_enumerator (tree, tree);
6857 extern bool start_preparsed_function (tree, tree, int);
6858 extern bool start_function (cp_decl_specifier_seq *,
6859 const cp_declarator *, tree);
6860 extern tree begin_function_body (void);
6861 extern void finish_function_body (tree);
6862 extern tree outer_curly_brace_block (tree);
6863 extern tree finish_function (bool);
6864 extern tree grokmethod (cp_decl_specifier_seq *, const cp_declarator *, tree);
6865 extern void maybe_register_incomplete_var (tree);
6866 extern void maybe_commonize_var (tree);
6867 extern void complete_vars (tree);
6868 extern tree static_fn_type (tree);
6869 extern void revert_static_member_fn (tree);
6870 extern void fixup_anonymous_aggr (tree);
6871 extern tree compute_array_index_type (tree, tree, tsubst_flags_t);
6872 extern tree check_default_argument (tree, tree, tsubst_flags_t);
6873 extern int wrapup_namespace_globals ();
6874 extern tree create_implicit_typedef (tree, tree);
6875 extern int local_variable_p (const_tree);
6876 extern tree register_dtor_fn (tree);
6877 extern tmpl_spec_kind current_tmpl_spec_kind (int);
6878 extern tree cxx_builtin_function (tree decl);
6879 extern tree cxx_builtin_function_ext_scope (tree decl);
6880 extern tree cxx_simulate_builtin_function_decl (tree);
6881 extern tree check_elaborated_type_specifier (enum tag_types, tree, bool);
6882 extern void warn_extern_redeclared_static (tree, tree);
6883 extern tree cxx_comdat_group (tree);
6884 extern bool cp_missing_noreturn_ok_p (tree);
6885 extern bool is_direct_enum_init (tree, tree);
6886 extern void initialize_artificial_var (tree, vec<constructor_elt, va_gc> *);
6887 extern tree check_var_type (tree, tree, location_t);
6888 extern tree reshape_init (tree, tree, tsubst_flags_t);
6889 extern tree next_initializable_field (tree);
6890 extern tree next_subobject_field (tree);
6891 extern tree first_field (const_tree);
6892 extern tree fndecl_declared_return_type (tree);
6893 extern bool undeduced_auto_decl (tree);
6894 extern bool require_deduced_type (tree, tsubst_flags_t = tf_warning_or_error);
6895
6896 extern tree finish_case_label (location_t, tree, tree);
6897 extern tree cxx_maybe_build_cleanup (tree, tsubst_flags_t);
6898 extern bool check_array_designated_initializer (constructor_elt *,
6899 unsigned HOST_WIDE_INT);
6900 extern bool check_for_uninitialized_const_var (tree, bool, tsubst_flags_t);
6901 extern tree build_explicit_specifier (tree, tsubst_flags_t);
6902 extern void do_push_parm_decls (tree, tree, tree *);
6903 extern tree do_aggregate_paren_init (tree, tree);
6904
6905 /* in decl2.cc */
6906 extern void record_mangling (tree, bool);
6907 extern void overwrite_mangling (tree, tree);
6908 extern void note_mangling_alias (tree, tree);
6909 extern void generate_mangling_aliases (void);
6910 extern tree build_memfn_type (tree, tree, cp_cv_quals, cp_ref_qualifier);
6911 extern tree build_pointer_ptrmemfn_type (tree);
6912 extern tree change_return_type (tree, tree);
6913 extern void maybe_retrofit_in_chrg (tree);
6914 extern void maybe_make_one_only (tree);
6915 extern bool vague_linkage_p (tree);
6916 extern void grokclassfn (tree, tree,
6917 enum overload_flags);
6918 extern tree grok_array_decl (location_t, tree, tree,
6919 vec<tree, va_gc> **, tsubst_flags_t);
6920 extern tree delete_sanity (location_t, tree, tree, bool,
6921 int, tsubst_flags_t);
6922 extern tree check_classfn (tree, tree, tree);
6923 extern void check_member_template (tree);
6924 extern tree grokfield (const cp_declarator *, cp_decl_specifier_seq *,
6925 tree, bool, tree, tree);
6926 extern tree grokbitfield (const cp_declarator *, cp_decl_specifier_seq *,
6927 tree, tree, tree);
6928 extern tree splice_template_attributes (tree *, tree);
6929 extern bool any_dependent_type_attributes_p (tree);
6930 extern tree cp_reconstruct_complex_type (tree, tree);
6931 extern bool attributes_naming_typedef_ok (tree);
6932 extern void cplus_decl_attributes (tree *, tree, int);
6933 extern void finish_anon_union (tree);
6934 extern void cxx_post_compilation_parsing_cleanups (void);
6935 extern tree coerce_new_type (tree, location_t);
6936 extern void coerce_delete_type (tree, location_t);
6937 extern void comdat_linkage (tree);
6938 extern void determine_visibility (tree);
6939 extern void constrain_class_visibility (tree);
6940 extern void reset_type_linkage (tree);
6941 extern void tentative_decl_linkage (tree);
6942 extern void import_export_decl (tree);
6943 extern tree build_cleanup (tree);
6944 extern tree build_offset_ref_call_from_tree (tree, vec<tree, va_gc> **,
6945 tsubst_flags_t);
6946 extern bool decl_defined_p (tree);
6947 extern bool decl_constant_var_p (tree);
6948 extern bool decl_maybe_constant_var_p (tree);
6949 extern void no_linkage_error (tree);
6950 extern void check_default_args (tree);
6951 extern bool mark_used (tree);
6952 extern bool mark_used (tree, tsubst_flags_t);
6953 extern bool mark_single_function (tree, tsubst_flags_t);
6954 extern void finish_static_data_member_decl (tree, tree, bool, tree, int);
6955 extern tree cp_build_parm_decl (tree, tree, tree);
6956 extern void copy_linkage (tree, tree);
6957 extern tree get_guard (tree);
6958 extern tree get_guard_cond (tree, bool);
6959 extern tree set_guard (tree);
6960 extern bool var_needs_tls_wrapper (tree);
6961 extern tree maybe_get_tls_wrapper_call (tree);
6962 extern void mark_needed (tree);
6963 extern bool decl_needed_p (tree);
6964 extern void note_vague_linkage_fn (tree);
6965 extern void note_variable_template_instantiation (tree);
6966 extern tree build_artificial_parm (tree, tree, tree);
6967 extern bool possibly_inlined_p (tree);
6968 extern int parm_index (tree);
6969 extern tree vtv_start_verification_constructor_init_function (void);
6970 extern tree vtv_finish_verification_constructor_init_function (tree);
6971 extern bool cp_omp_mappable_type (tree);
6972 extern bool cp_omp_emit_unmappable_type_notes (tree);
6973 extern void cp_check_const_attributes (tree);
6974
6975 /* in error.cc */
6976 extern const char *type_as_string (tree, int);
6977 extern const char *type_as_string_translate (tree, int);
6978 extern const char *decl_as_string (tree, int);
6979 extern const char *decl_as_string_translate (tree, int);
6980 extern const char *decl_as_dwarf_string (tree, int);
6981 extern const char *expr_as_string (tree, int);
6982 extern const char *expr_to_string (tree);
6983 extern const char *lang_decl_name (tree, int, bool);
6984 extern const char *lang_decl_dwarf_name (tree, int, bool);
6985 extern const char *language_to_string (enum languages);
6986 extern const char *class_key_or_enum_as_string (tree);
6987 extern void maybe_warn_variadic_templates (void);
6988 extern void maybe_warn_cpp0x (cpp0x_warn_str str,
6989 location_t = input_location);
6990 extern bool pedwarn_cxx98 (location_t, int, const char *, ...) ATTRIBUTE_GCC_DIAG(3,4);
6991 extern location_t location_of (tree);
6992 extern void qualified_name_lookup_error (tree, tree, tree,
6993 location_t);
6994
6995 /* in except.cc */
6996 extern void init_exception_processing (void);
6997 extern tree expand_start_catch_block (tree);
6998 extern void expand_end_catch_block (void);
6999 extern tree build_exc_ptr (void);
7000 extern tree build_throw (location_t, tree);
7001 extern int nothrow_libfn_p (const_tree);
7002 extern void check_handlers (tree);
7003 extern tree finish_noexcept_expr (tree, tsubst_flags_t);
7004 extern bool expr_noexcept_p (tree, tsubst_flags_t);
7005 extern void perform_deferred_noexcept_checks (void);
7006 extern bool nothrow_spec_p (const_tree);
7007 extern bool type_noexcept_p (const_tree);
7008 extern bool type_throw_all_p (const_tree);
7009 extern tree build_noexcept_spec (tree, tsubst_flags_t);
7010 extern void choose_personality_routine (enum languages);
7011 extern tree build_must_not_throw_expr (tree,tree);
7012 extern tree eh_type_info (tree);
7013 extern tree begin_eh_spec_block (void);
7014 extern void finish_eh_spec_block (tree, tree);
7015 extern tree build_eh_type_type (tree);
7016 extern tree cp_protect_cleanup_actions (void);
7017 extern void maybe_splice_retval_cleanup (tree);
7018 extern tree maybe_set_retval_sentinel (void);
7019
7020 extern tree template_parms_to_args (tree);
7021 extern tree template_parms_level_to_args (tree);
7022 extern tree generic_targs_for (tree);
7023 extern tree outer_template_args (tree);
7024
7025 /* in expr.cc */
7026 extern tree cplus_expand_constant (tree);
7027 extern tree mark_use (tree expr, bool rvalue_p, bool read_p,
7028 location_t = UNKNOWN_LOCATION,
7029 bool reject_builtin = true);
7030 extern tree mark_rvalue_use (tree,
7031 location_t = UNKNOWN_LOCATION,
7032 bool reject_builtin = true);
7033 extern tree mark_lvalue_use (tree);
7034 extern tree mark_lvalue_use_nonread (tree);
7035 extern tree mark_type_use (tree);
7036 extern tree mark_discarded_use (tree);
7037 extern void mark_exp_read (tree);
7038
7039 /* friend.cc */
7040 extern int is_friend (tree, tree);
7041 extern void make_friend_class (tree, tree, bool);
7042 extern void add_friend (tree, tree, bool);
7043 extern tree do_friend (tree, tree, tree,
7044 enum overload_flags, bool);
7045
7046 extern void set_global_friend (tree);
7047 extern bool is_global_friend (tree);
7048
7049 /* in init.cc */
7050 extern tree expand_member_init (tree);
7051 extern void emit_mem_initializers (tree);
7052 extern tree build_aggr_init (tree, tree, int,
7053 tsubst_flags_t);
7054 extern int is_class_type (tree, int);
7055 extern bool is_copy_initialization (tree);
7056 extern tree build_zero_init (tree, tree, bool);
7057 extern tree build_value_init (tree, tsubst_flags_t);
7058 extern tree build_value_init_noctor (tree, tsubst_flags_t);
7059 extern tree maybe_instantiate_nsdmi_init (tree, tsubst_flags_t);
7060 extern tree get_nsdmi (tree, bool, tsubst_flags_t);
7061 extern tree build_offset_ref (tree, tree, bool,
7062 tsubst_flags_t);
7063 extern tree throw_bad_array_new_length (void);
7064 extern bool type_has_new_extended_alignment (tree);
7065 extern unsigned malloc_alignment (void);
7066 extern tree build_new_constexpr_heap_type (tree, tree, tree);
7067 extern tree build_new (location_t,
7068 vec<tree, va_gc> **, tree,
7069 tree, vec<tree, va_gc> **,
7070 int, tsubst_flags_t);
7071 extern tree get_temp_regvar (tree, tree);
7072 extern tree build_vec_init (tree, tree, tree, bool, int,
7073 tsubst_flags_t,
7074 vec<tree, va_gc> ** = nullptr);
7075 extern tree build_delete (location_t, tree, tree,
7076 special_function_kind,
7077 int, int, tsubst_flags_t);
7078 extern void push_base_cleanups (void);
7079 extern tree build_vec_delete (location_t, tree, tree,
7080 special_function_kind, int,
7081 tsubst_flags_t);
7082 extern tree create_temporary_var (tree);
7083 extern void initialize_vtbl_ptrs (tree);
7084 extern tree scalar_constant_value (tree);
7085 extern tree decl_constant_value (tree, bool);
7086 extern tree decl_really_constant_value (tree, bool = true);
7087 extern int diagnose_uninitialized_cst_or_ref_member (tree, bool, bool);
7088 extern tree build_vtbl_address (tree);
7089 extern bool maybe_reject_flexarray_init (tree, tree);
7090
7091 /* in lex.cc */
7092 extern void cxx_dup_lang_specific_decl (tree);
7093 extern tree unqualified_name_lookup_error (tree,
7094 location_t = UNKNOWN_LOCATION);
7095 extern tree unqualified_fn_lookup_error (cp_expr);
7096 extern tree make_conv_op_name (tree);
7097 extern tree build_lang_decl (enum tree_code, tree, tree);
7098 extern tree build_lang_decl_loc (location_t, enum tree_code, tree, tree);
7099 extern bool maybe_add_lang_decl_raw (tree, bool decomp_p);
7100 extern bool maybe_add_lang_type_raw (tree);
7101 extern void retrofit_lang_decl (tree);
7102 extern void fit_decomposition_lang_decl (tree, tree);
7103 extern tree copy_decl (tree CXX_MEM_STAT_INFO);
7104 extern tree copy_type (tree CXX_MEM_STAT_INFO);
7105 extern tree cxx_make_type (enum tree_code CXX_MEM_STAT_INFO);
7106 extern tree make_class_type (enum tree_code CXX_MEM_STAT_INFO);
7107 extern const char *get_identifier_kind_name (tree);
7108 extern void set_identifier_kind (tree, cp_identifier_kind);
7109 extern bool cxx_init (void);
7110 extern void cxx_finish (void);
7111 extern bool in_main_input_context (void);
7112 extern uintptr_t module_token_pre (cpp_reader *, const cpp_token *, uintptr_t);
7113 extern uintptr_t module_token_cdtor (cpp_reader *, uintptr_t);
7114 extern uintptr_t module_token_lang (int type, int keyword, tree value,
7115 location_t, uintptr_t);
7116
7117 /* in method.cc */
7118 extern void init_method (void);
7119 extern tree make_thunk (tree, bool, tree, tree);
7120 extern void finish_thunk (tree);
7121 extern void use_thunk (tree, bool);
7122 extern bool trivial_fn_p (tree);
7123 extern tree forward_parm (tree);
7124 extern bool is_trivially_xible (enum tree_code, tree, tree);
7125 extern bool is_nothrow_xible (enum tree_code, tree, tree);
7126 extern bool is_xible (enum tree_code, tree, tree);
7127 extern tree get_defaulted_eh_spec (tree, tsubst_flags_t = tf_warning_or_error);
7128 extern bool maybe_explain_implicit_delete (tree);
7129 extern void explain_implicit_non_constexpr (tree);
7130 extern bool deduce_inheriting_ctor (tree);
7131 extern bool decl_remember_implicit_trigger_p (tree);
7132 extern void synthesize_method (tree);
7133 extern void maybe_synthesize_method (tree);
7134 extern tree lazily_declare_fn (special_function_kind,
7135 tree);
7136 extern tree skip_artificial_parms_for (const_tree, tree);
7137 extern int num_artificial_parms_for (const_tree);
7138 extern tree make_alias_for (tree, tree);
7139 extern tree get_copy_ctor (tree, tsubst_flags_t);
7140 extern tree get_copy_assign (tree);
7141 extern tree get_default_ctor (tree);
7142 extern tree get_dtor (tree, tsubst_flags_t);
7143 extern tree build_stub_object (tree);
7144 extern tree strip_inheriting_ctors (tree);
7145 extern tree inherited_ctor_binfo (tree);
7146 extern bool base_ctor_omit_inherited_parms (tree);
7147 extern bool ctor_omit_inherited_parms (tree);
7148 extern tree locate_ctor (tree);
7149 extern tree implicitly_declare_fn (special_function_kind, tree,
7150 bool, tree, tree);
7151 /* In module.cc */
7152 class module_state; /* Forward declare. */
modules_p()7153 inline bool modules_p () { return flag_modules != 0; }
7154
7155 /* The kind of module or part thereof that we're in. */
7156 enum module_kind_bits
7157 {
7158 MK_MODULE = 1 << 0, /* This TU is a module. */
7159 MK_GLOBAL = 1 << 1, /* Entities are in the global module. */
7160 MK_INTERFACE = 1 << 2, /* This TU is an interface. */
7161 MK_PARTITION = 1 << 3, /* This TU is a partition. */
7162 MK_EXPORTING = 1 << 4, /* We are in an export region. */
7163 };
7164
7165 /* We do lots of bit-manipulation, so an unsigned is easier. */
7166 extern unsigned module_kind;
7167
7168 /* MK_MODULE & MK_GLOBAL have the following combined meanings:
7169 MODULE GLOBAL
7170 0 0 not a module
7171 0 1 GMF of named module (we've not yet seen module-decl)
7172 1 0 purview of named module
7173 1 1 header unit. */
7174
module_purview_p()7175 inline bool module_purview_p ()
7176 { return module_kind & MK_MODULE; }
global_purview_p()7177 inline bool global_purview_p ()
7178 { return module_kind & MK_GLOBAL; }
7179
not_module_p()7180 inline bool not_module_p ()
7181 { return (module_kind & (MK_MODULE | MK_GLOBAL)) == 0; }
named_module_p()7182 inline bool named_module_p ()
7183 { /* This is a named module if exactly one of MODULE and GLOBAL is
7184 set. */
7185 /* The divides are constant shifts! */
7186 return ((module_kind / MK_MODULE) ^ (module_kind / MK_GLOBAL)) & 1;
7187 }
header_module_p()7188 inline bool header_module_p ()
7189 { return (module_kind & (MK_MODULE | MK_GLOBAL)) == (MK_MODULE | MK_GLOBAL); }
named_module_purview_p()7190 inline bool named_module_purview_p ()
7191 { return (module_kind & (MK_MODULE | MK_GLOBAL)) == MK_MODULE; }
module_interface_p()7192 inline bool module_interface_p ()
7193 { return module_kind & MK_INTERFACE; }
module_partition_p()7194 inline bool module_partition_p ()
7195 { return module_kind & MK_PARTITION; }
module_has_cmi_p()7196 inline bool module_has_cmi_p ()
7197 { return module_kind & (MK_INTERFACE | MK_PARTITION); }
7198
7199 /* We're currently exporting declarations. */
module_exporting_p()7200 inline bool module_exporting_p ()
7201 { return module_kind & MK_EXPORTING; }
7202
7203 extern module_state *get_module (tree name, module_state *parent = NULL,
7204 bool partition = false);
7205 extern bool module_may_redeclare (tree decl);
7206
7207 extern int module_initializer_kind ();
7208 extern void module_add_import_initializers ();
7209
7210 /* Where the namespace-scope decl was originally declared. */
7211 extern void set_originating_module (tree, bool friend_p = false);
7212 extern tree get_originating_module_decl (tree) ATTRIBUTE_PURE;
7213 extern int get_originating_module (tree, bool for_mangle = false) ATTRIBUTE_PURE;
7214 extern unsigned get_importing_module (tree, bool = false) ATTRIBUTE_PURE;
7215
7216 /* Where current instance of the decl got declared/defined/instantiated. */
7217 extern void set_instantiating_module (tree);
7218 extern void set_defining_module (tree);
7219 extern void maybe_attach_decl (tree ctx, tree decl);
7220
7221 extern void mangle_module (int m, bool include_partition);
7222 extern void mangle_module_fini ();
7223 extern void lazy_load_binding (unsigned mod, tree ns, tree id,
7224 binding_slot *bslot);
7225 extern void lazy_load_pendings (tree decl);
7226 extern module_state *preprocess_module (module_state *, location_t,
7227 bool in_purview,
7228 bool is_import, bool export_p,
7229 cpp_reader *reader);
7230 extern void preprocessed_module (cpp_reader *reader);
7231 extern void import_module (module_state *, location_t, bool export_p,
7232 tree attr, cpp_reader *);
7233 extern void declare_module (module_state *, location_t, bool export_p,
7234 tree attr, cpp_reader *);
7235 extern void init_modules (cpp_reader *);
7236 extern void fini_modules ();
7237 extern void maybe_check_all_macros (cpp_reader *);
7238 extern void finish_module_processing (cpp_reader *);
7239 extern char const *module_name (unsigned, bool header_ok);
7240 extern bitmap get_import_bitmap ();
7241 extern bitmap visible_instantiation_path (bitmap *);
7242 extern void module_begin_main_file (cpp_reader *, line_maps *,
7243 const line_map_ordinary *);
7244 extern void module_preprocess_options (cpp_reader *);
7245 extern bool handle_module_option (unsigned opt, const char *arg, int value);
7246
7247 /* In optimize.cc */
7248 extern bool maybe_clone_body (tree);
7249
7250 /* In parser.cc */
7251 extern tree cp_convert_range_for (tree, tree, tree, tree, unsigned int, bool,
7252 unsigned short);
7253 extern void cp_convert_omp_range_for (tree &, vec<tree, va_gc> *, tree &,
7254 tree &, tree &, tree &, tree &, tree &);
7255 extern void cp_finish_omp_range_for (tree, tree);
7256 extern bool parsing_nsdmi (void);
7257 extern bool parsing_function_declarator ();
7258 extern bool parsing_default_capturing_generic_lambda_in_template (void);
7259 extern void inject_this_parameter (tree, cp_cv_quals);
7260 extern location_t defparse_location (tree);
7261 extern void maybe_show_extern_c_location (void);
7262 extern bool literal_integer_zerop (const_tree);
7263
7264 /* in pt.cc */
7265 extern tree canonical_type_parameter (tree);
7266 extern void push_access_scope (tree);
7267 extern void pop_access_scope (tree);
7268 extern bool check_template_shadow (tree);
7269 extern bool check_auto_in_tmpl_args (tree, tree);
7270 extern tree get_innermost_template_args (tree, int);
7271 extern void maybe_begin_member_template_processing (tree);
7272 extern void maybe_end_member_template_processing (void);
7273 extern tree finish_member_template_decl (tree);
7274 extern void begin_template_parm_list (void);
7275 extern bool begin_specialization (void);
7276 extern void reset_specialization (void);
7277 extern void end_specialization (void);
7278 extern void begin_explicit_instantiation (void);
7279 extern void end_explicit_instantiation (void);
7280 extern void check_unqualified_spec_or_inst (tree, location_t);
7281 extern tree check_explicit_specialization (tree, tree, int, int,
7282 tree = NULL_TREE);
7283 extern int num_template_headers_for_class (tree);
7284 extern void check_template_variable (tree);
7285 extern tree make_auto (void);
7286 extern tree make_decltype_auto (void);
7287 extern tree make_constrained_auto (tree, tree);
7288 extern tree make_constrained_decltype_auto (tree, tree);
7289 extern tree make_template_placeholder (tree);
7290 extern bool template_placeholder_p (tree);
7291 extern bool ctad_template_p (tree);
7292 extern tree do_auto_deduction (tree, tree, tree,
7293 tsubst_flags_t
7294 = tf_warning_or_error,
7295 auto_deduction_context
7296 = adc_unspecified,
7297 tree = NULL_TREE,
7298 int = LOOKUP_NORMAL);
7299 extern tree type_uses_auto (tree);
7300 extern tree type_uses_auto_or_concept (tree);
7301 extern void append_type_to_template_for_access_check (tree, tree, tree,
7302 location_t);
7303 extern tree convert_generic_types_to_packs (tree, int, int);
7304 extern tree splice_late_return_type (tree, tree);
7305 extern bool is_auto (const_tree);
7306 extern tree process_template_parm (tree, location_t, tree,
7307 bool, bool);
7308 extern tree end_template_parm_list (tree);
7309 extern void end_template_parm_list (void);
7310 extern void end_template_decl (void);
7311 extern tree maybe_update_decl_type (tree, tree);
7312 extern bool check_default_tmpl_args (tree, tree, bool, bool, int);
7313 extern tree push_template_decl (tree, bool is_friend = false);
7314 extern tree add_inherited_template_parms (tree, tree);
7315 extern void template_parm_level_and_index (tree, int*, int*);
7316 extern bool redeclare_class_template (tree, tree, tree);
7317 extern tree lookup_template_class (tree, tree, tree, tree,
7318 int, tsubst_flags_t);
7319 extern tree lookup_template_function (tree, tree);
7320 extern tree lookup_template_variable (tree, tree);
7321 extern int uses_template_parms (tree);
7322 extern bool uses_template_parms_level (tree, int);
7323 extern bool uses_outer_template_parms_in_constraints (tree);
7324 extern bool in_template_function (void);
7325 extern bool need_generic_capture (void);
7326 extern tree instantiate_class_template (tree);
7327 extern tree instantiate_template (tree, tree, tsubst_flags_t);
7328 extern tree fn_type_unification (tree, tree, tree,
7329 const tree *, unsigned int,
7330 tree, unification_kind_t, int,
7331 struct conversion **,
7332 bool, bool);
7333 extern void mark_decl_instantiated (tree, int);
7334 extern int more_specialized_fn (tree, tree, int);
7335 extern void do_decl_instantiation (tree, tree);
7336 extern void do_type_instantiation (tree, tree, tsubst_flags_t);
7337 extern bool always_instantiate_p (tree);
7338 extern bool maybe_instantiate_noexcept (tree, tsubst_flags_t = tf_warning_or_error);
7339 extern tree instantiate_decl (tree, bool, bool);
7340 extern void maybe_instantiate_decl (tree);
7341 extern int comp_template_parms (const_tree, const_tree);
7342 extern bool template_heads_equivalent_p (const_tree, const_tree);
7343 extern bool builtin_pack_fn_p (tree);
7344 extern tree uses_parameter_packs (tree);
7345 extern bool template_parameter_pack_p (const_tree);
7346 extern bool function_parameter_pack_p (const_tree);
7347 extern bool function_parameter_expanded_from_pack_p (tree, tree);
7348 extern tree make_pack_expansion (tree, tsubst_flags_t = tf_warning_or_error);
7349 extern bool check_for_bare_parameter_packs (tree, location_t = UNKNOWN_LOCATION);
7350 extern tree build_template_info (tree, tree);
7351 extern tree get_template_info (const_tree);
7352 extern int template_class_depth (tree);
7353 extern int is_specialization_of (tree, tree);
7354 extern bool is_specialization_of_friend (tree, tree);
7355 extern int comp_template_args (tree, tree, tree * = NULL,
7356 tree * = NULL, bool = false);
7357 extern int template_args_equal (tree, tree, bool = false);
7358 extern tree maybe_process_partial_specialization (tree);
7359 extern tree most_specialized_instantiation (tree);
7360 extern tree most_specialized_partial_spec (tree, tsubst_flags_t);
7361 extern void print_candidates (tree);
7362 extern void instantiate_pending_templates (int);
7363 extern tree tsubst_default_argument (tree, int, tree, tree,
7364 tsubst_flags_t);
7365 extern tree tsubst (tree, tree, tsubst_flags_t, tree);
7366 extern tree tsubst_copy_and_build (tree, tree, tsubst_flags_t,
7367 tree, bool = false, bool = false);
7368 extern tree tsubst_expr (tree, tree, tsubst_flags_t,
7369 tree, bool);
7370 extern tree tsubst_pack_expansion (tree, tree, tsubst_flags_t, tree);
7371 extern tree tsubst_argument_pack (tree, tree, tsubst_flags_t, tree);
7372 extern tree tsubst_template_args (tree, tree, tsubst_flags_t, tree);
7373 extern tree tsubst_template_arg (tree, tree, tsubst_flags_t, tree);
7374 extern tree tsubst_function_parms (tree, tree, tsubst_flags_t, tree);
7375 extern tree most_general_template (tree);
7376 extern tree get_mostly_instantiated_function_type (tree);
7377 extern bool problematic_instantiation_changed (void);
7378 extern void record_last_problematic_instantiation (void);
7379 extern struct tinst_level *current_instantiation(void);
7380 extern bool instantiating_current_function_p (void);
7381 extern tree maybe_get_template_decl_from_type_decl (tree);
7382 extern int processing_template_parmlist;
7383 extern bool dependent_type_p (tree);
7384 extern bool dependent_scope_p (tree);
7385 extern bool dependentish_scope_p (tree);
7386 extern bool any_dependent_template_arguments_p (const_tree);
7387 extern bool any_erroneous_template_args_p (const_tree);
7388 extern bool dependent_template_p (tree);
7389 extern bool dependent_template_id_p (tree, tree);
7390 extern bool type_dependent_expression_p (tree);
7391 extern bool type_dependent_object_expression_p (tree);
7392 extern bool any_type_dependent_arguments_p (const vec<tree, va_gc> *);
7393 extern bool any_type_dependent_elements_p (const_tree);
7394 extern bool type_dependent_expression_p_push (tree);
7395 extern bool value_dependent_expression_p (tree);
7396 extern bool instantiation_dependent_uneval_expression_p (tree);
7397 extern bool any_value_dependent_elements_p (const_tree);
7398 extern bool dependent_omp_for_p (tree, tree, tree, tree);
7399 extern tree resolve_typename_type (tree, bool);
7400 extern tree template_for_substitution (tree);
7401 extern tree build_non_dependent_expr (tree);
7402 extern void make_args_non_dependent (vec<tree, va_gc> *);
7403 extern bool reregister_specialization (tree, tree, tree);
7404 extern tree instantiate_non_dependent_expr (tree);
7405 extern tree instantiate_non_dependent_expr_sfinae (tree, tsubst_flags_t);
7406 extern tree instantiate_non_dependent_expr_internal (tree, tsubst_flags_t);
7407 extern tree instantiate_non_dependent_or_null (tree);
7408 extern bool variable_template_specialization_p (tree);
7409 extern bool alias_type_or_template_p (tree);
7410 enum { nt_opaque = false, nt_transparent = true };
7411 extern tree alias_template_specialization_p (const_tree, bool);
7412 extern tree dependent_alias_template_spec_p (const_tree, bool);
7413 extern bool template_parm_object_p (const_tree);
7414 extern tree tparm_object_argument (tree);
7415 extern bool explicit_class_specialization_p (tree);
7416 extern bool push_tinst_level (tree);
7417 extern bool push_tinst_level (tree, tree);
7418 extern bool push_tinst_level_loc (tree, location_t);
7419 extern bool push_tinst_level_loc (tree, tree, location_t);
7420 extern void pop_tinst_level (void);
7421 extern struct tinst_level *outermost_tinst_level(void);
7422 extern bool non_templated_friend_p (tree);
7423 extern void init_template_processing (void);
7424 extern void print_template_statistics (void);
7425 bool template_template_parameter_p (const_tree);
7426 bool template_type_parameter_p (const_tree);
7427 extern bool primary_template_specialization_p (const_tree);
7428 extern tree get_primary_template_innermost_parameters (const_tree);
7429 extern tree get_template_innermost_arguments (const_tree);
7430 extern tree get_template_argument_pack_elems (const_tree);
7431 extern tree get_function_template_decl (const_tree);
7432 extern tree resolve_nondeduced_context (tree, tsubst_flags_t);
7433 extern tree resolve_nondeduced_context_or_error (tree, tsubst_flags_t);
7434 extern hashval_t iterative_hash_template_arg (tree arg, hashval_t val);
7435 extern tree coerce_template_parms (tree, tree, tree);
7436 extern tree coerce_template_parms (tree, tree, tree, tsubst_flags_t);
7437 extern tree canonicalize_type_argument (tree, tsubst_flags_t);
7438 extern void register_local_specialization (tree, tree);
7439 extern tree retrieve_local_specialization (tree);
7440 extern tree extract_fnparm_pack (tree, tree *);
7441 extern tree template_parm_to_arg (tree);
7442 extern tree dguide_name (tree);
7443 extern bool dguide_name_p (tree);
7444 extern bool deduction_guide_p (const_tree);
7445 extern bool copy_guide_p (const_tree);
7446 extern bool template_guide_p (const_tree);
7447 extern bool builtin_guide_p (const_tree);
7448 extern void store_explicit_specifier (tree, tree);
7449 extern tree lookup_explicit_specifier (tree);
7450 extern void walk_specializations (bool,
7451 void (*)(bool, spec_entry *,
7452 void *),
7453 void *);
7454 extern tree match_mergeable_specialization (bool is_decl, spec_entry *);
7455 extern unsigned get_mergeable_specialization_flags (tree tmpl, tree spec);
7456 extern void add_mergeable_specialization (bool is_decl, bool is_alias,
7457 spec_entry *,
7458 tree outer, unsigned);
7459 extern tree add_to_template_args (tree, tree);
7460 extern tree add_outermost_template_args (tree, tree);
7461 extern tree add_extra_args (tree, tree, tsubst_flags_t, tree);
7462 extern tree build_extra_args (tree, tree, tsubst_flags_t);
7463
7464 /* in rtti.cc */
7465 /* A vector of all tinfo decls that haven't been emitted yet. */
7466 extern GTY(()) vec<tree, va_gc> *unemitted_tinfo_decls;
7467
7468 extern void init_rtti_processing (void);
7469 extern tree build_typeid (tree, tsubst_flags_t);
7470 extern tree get_tinfo_decl_direct (tree, tree, int);
7471 extern tree get_tinfo_decl (tree);
7472 extern tree get_typeid (tree, tsubst_flags_t);
7473 extern tree build_headof (tree);
7474 extern tree build_dynamic_cast (location_t, tree, tree,
7475 tsubst_flags_t);
7476 extern void emit_support_tinfos (void);
7477 extern bool emit_tinfo_decl (tree);
7478 extern unsigned get_pseudo_tinfo_index (tree);
7479 extern tree get_pseudo_tinfo_type (unsigned);
7480 extern tree build_if_nonnull (tree, tree, tsubst_flags_t);
7481
7482 /* in search.cc */
7483 extern tree get_parent_with_private_access (tree decl, tree binfo);
7484 extern bool accessible_base_p (tree, tree, bool);
7485 extern tree lookup_base (tree, tree, base_access,
7486 base_kind *, tsubst_flags_t);
7487 extern tree dcast_base_hint (tree, tree);
7488 extern int accessible_p (tree, tree, bool);
7489 extern int accessible_in_template_p (tree, tree);
7490 extern tree lookup_field (tree, tree, int, bool);
7491 extern tree lookup_fnfields (tree, tree, int, tsubst_flags_t);
7492 extern tree lookup_member (tree, tree, int, bool,
7493 tsubst_flags_t,
7494 access_failure_info *afi = NULL);
7495 extern tree lookup_member_fuzzy (tree, tree, bool);
7496 extern tree locate_field_accessor (tree, tree, bool);
7497 extern int look_for_overrides (tree, tree);
7498 extern void get_pure_virtuals (tree);
7499 extern void maybe_suppress_debug_info (tree);
7500 extern void note_debug_info_needed (tree);
7501 extern tree current_scope (void);
7502 extern int at_function_scope_p (void);
7503 extern bool at_class_scope_p (void);
7504 extern bool at_namespace_scope_p (void);
7505 extern tree context_for_name_lookup (tree);
7506 extern tree lookup_conversions (tree);
7507 extern tree binfo_from_vbase (tree);
7508 extern tree binfo_for_vbase (tree, tree);
7509 extern tree look_for_overrides_here (tree, tree);
7510 #define dfs_skip_bases ((tree)1)
7511 extern tree dfs_walk_all (tree, tree (*) (tree, void *),
7512 tree (*) (tree, void *), void *);
7513 extern tree dfs_walk_once (tree, tree (*) (tree, void *),
7514 tree (*) (tree, void *), void *);
7515 extern tree binfo_via_virtual (tree, tree);
7516 extern bool binfo_direct_p (tree);
7517 extern tree build_baselink (tree, tree, tree, tree);
7518 extern tree adjust_result_of_qualified_name_lookup
7519 (tree, tree, tree);
7520 extern tree copied_binfo (tree, tree);
7521 extern tree original_binfo (tree, tree);
7522 extern bool shared_member_p (tree);
7523 extern bool any_dependent_bases_p (tree = current_nonlambda_class_type ());
7524 extern bool maybe_check_overriding_exception_spec (tree, tree);
7525
7526 /* in semantics.cc */
7527 extern void push_deferring_access_checks (deferring_kind);
7528 extern void resume_deferring_access_checks (void);
7529 extern void stop_deferring_access_checks (void);
7530 extern void pop_deferring_access_checks (void);
7531 extern vec<deferred_access_check, va_gc> *get_deferred_access_checks (void);
7532 extern void reopen_deferring_access_checks (vec<deferred_access_check, va_gc> *);
7533 extern void pop_to_parent_deferring_access_checks (void);
7534 extern bool perform_access_checks (vec<deferred_access_check, va_gc> *,
7535 tsubst_flags_t);
7536 extern bool perform_deferred_access_checks (tsubst_flags_t);
7537 extern bool perform_or_defer_access_check (tree, tree, tree,
7538 tsubst_flags_t,
7539 access_failure_info *afi = NULL);
7540
7541 /* RAII sentinel to ensures that deferred access checks are popped before
7542 a function returns. */
7543
7544 class deferring_access_check_sentinel
7545 {
7546 public:
7547 deferring_access_check_sentinel (enum deferring_kind kind = dk_deferred)
7548 {
7549 push_deferring_access_checks (kind);
7550 }
~deferring_access_check_sentinel()7551 ~deferring_access_check_sentinel ()
7552 {
7553 pop_deferring_access_checks ();
7554 }
7555 };
7556
7557 extern int stmts_are_full_exprs_p (void);
7558 extern void init_cp_semantics (void);
7559 extern tree do_poplevel (tree);
7560 extern void break_maybe_infinite_loop (void);
7561 extern void add_decl_expr (tree);
7562 extern tree maybe_cleanup_point_expr_void (tree);
7563 extern tree finish_expr_stmt (tree);
7564 extern tree begin_if_stmt (void);
7565 extern tree finish_if_stmt_cond (tree, tree);
7566 extern tree finish_then_clause (tree);
7567 extern void begin_else_clause (tree);
7568 extern void finish_else_clause (tree);
7569 extern void finish_if_stmt (tree);
7570 extern tree begin_while_stmt (void);
7571 extern void finish_while_stmt_cond (tree, tree, bool, unsigned short);
7572 extern void finish_while_stmt (tree);
7573 extern tree begin_do_stmt (void);
7574 extern void finish_do_body (tree);
7575 extern void finish_do_stmt (tree, tree, bool, unsigned short);
7576 extern tree finish_return_stmt (tree);
7577 extern tree begin_for_scope (tree *);
7578 extern tree begin_for_stmt (tree, tree);
7579 extern void finish_init_stmt (tree);
7580 extern void finish_for_cond (tree, tree, bool, unsigned short);
7581 extern void finish_for_expr (tree, tree);
7582 extern void finish_for_stmt (tree);
7583 extern tree begin_range_for_stmt (tree, tree);
7584 extern void finish_range_for_decl (tree, tree, tree);
7585 extern void finish_range_for_stmt (tree);
7586 extern tree finish_break_stmt (void);
7587 extern tree finish_continue_stmt (void);
7588 extern tree begin_switch_stmt (void);
7589 extern void finish_switch_cond (tree, tree);
7590 extern void finish_switch_stmt (tree);
7591 extern tree finish_goto_stmt (tree);
7592 extern tree begin_try_block (void);
7593 extern void finish_try_block (tree);
7594 extern void finish_handler_sequence (tree);
7595 extern tree begin_function_try_block (tree *);
7596 extern void finish_function_try_block (tree);
7597 extern void finish_function_handler_sequence (tree, tree);
7598 extern void finish_cleanup_try_block (tree);
7599 extern tree begin_handler (void);
7600 extern void finish_handler_parms (tree, tree);
7601 extern void finish_handler (tree);
7602 extern void finish_cleanup (tree, tree);
7603 extern bool is_this_parameter (tree);
7604
7605 enum {
7606 BCS_NORMAL = 0,
7607 BCS_NO_SCOPE = 1,
7608 BCS_TRY_BLOCK = 2,
7609 BCS_FN_BODY = 4,
7610 BCS_TRANSACTION = 8
7611 };
7612 extern tree begin_compound_stmt (unsigned int);
7613
7614 extern void finish_compound_stmt (tree);
7615 extern tree finish_asm_stmt (location_t, int, tree, tree,
7616 tree, tree, tree, bool);
7617 extern tree finish_label_stmt (tree);
7618 extern void finish_label_decl (tree);
7619 extern cp_expr finish_parenthesized_expr (cp_expr);
7620 extern tree force_paren_expr (tree, bool = false);
force_paren_expr_uneval(tree t)7621 inline tree force_paren_expr_uneval (tree t)
7622 { return force_paren_expr (t, true); }
7623 extern tree maybe_undo_parenthesized_ref (tree);
7624 extern tree maybe_strip_ref_conversion (tree);
7625 extern tree finish_non_static_data_member (tree, tree, tree);
7626 extern tree begin_stmt_expr (void);
7627 extern tree finish_stmt_expr_expr (tree, tree);
7628 extern tree finish_stmt_expr (tree, bool);
7629 extern tree stmt_expr_value_expr (tree);
7630 bool empty_expr_stmt_p (tree);
7631 extern cp_expr perform_koenig_lookup (cp_expr, vec<tree, va_gc> *,
7632 tsubst_flags_t);
7633 extern tree finish_call_expr (tree, vec<tree, va_gc> **, bool,
7634 bool, tsubst_flags_t);
7635 extern tree lookup_and_finish_template_variable (tree, tree, tsubst_flags_t = tf_warning_or_error);
7636 extern tree finish_template_variable (tree, tsubst_flags_t = tf_warning_or_error);
7637 extern cp_expr finish_increment_expr (cp_expr, enum tree_code);
7638 extern tree finish_this_expr (void);
7639 extern tree finish_pseudo_destructor_expr (tree, tree, tree, location_t);
7640 extern cp_expr finish_unary_op_expr (location_t, enum tree_code, cp_expr,
7641 tsubst_flags_t);
7642 /* Whether this call to finish_compound_literal represents a C++11 functional
7643 cast or a C99 compound literal. */
7644 enum fcl_t { fcl_functional, fcl_c99 };
7645 extern tree finish_compound_literal (tree, tree, tsubst_flags_t, fcl_t = fcl_functional);
7646 extern tree finish_fname (tree);
7647 extern void finish_translation_unit (void);
7648 extern tree finish_template_type_parm (tree, tree);
7649 extern tree finish_template_template_parm (tree, tree);
7650 extern tree begin_class_definition (tree);
7651 extern void finish_template_decl (tree);
7652 extern tree finish_template_type (tree, tree, int);
7653 extern tree finish_base_specifier (tree, tree, bool);
7654 extern void finish_member_declaration (tree);
7655 extern bool outer_automatic_var_p (tree);
7656 extern tree process_outer_var_ref (tree, tsubst_flags_t, bool force_use = false);
7657 extern cp_expr finish_id_expression (tree, tree, tree,
7658 cp_id_kind *,
7659 bool, bool, bool *,
7660 bool, bool, bool, bool,
7661 const char **,
7662 location_t);
7663 extern tree finish_typeof (tree);
7664 extern tree finish_underlying_type (tree);
7665 extern tree calculate_bases (tree, tsubst_flags_t);
7666 extern tree finish_bases (tree, bool);
7667 extern tree calculate_direct_bases (tree, tsubst_flags_t);
7668 extern tree finish_offsetof (tree, tree, location_t);
7669 extern void finish_decl_cleanup (tree, tree);
7670 extern void finish_eh_cleanup (tree);
7671 extern void emit_associated_thunks (tree);
7672 extern void finish_mem_initializers (tree);
7673 extern tree check_template_template_default_arg (tree);
7674 extern bool expand_or_defer_fn_1 (tree);
7675 extern void expand_or_defer_fn (tree);
7676 extern bool check_accessibility_of_qualified_id (tree, tree, tree, tsubst_flags_t);
7677 extern tree finish_qualified_id_expr (tree, tree, bool, bool,
7678 bool, bool, tsubst_flags_t);
7679 extern void simplify_aggr_init_expr (tree *);
7680 extern void finalize_nrv (tree *, tree, tree);
7681 extern tree omp_reduction_id (enum tree_code, tree, tree);
7682 extern tree cp_remove_omp_priv_cleanup_stmt (tree *, int *, void *);
7683 extern bool cp_check_omp_declare_reduction (tree);
7684 extern void finish_omp_declare_simd_methods (tree);
7685 extern tree finish_omp_clauses (tree, enum c_omp_region_type);
7686 extern tree push_omp_privatization_clauses (bool);
7687 extern void pop_omp_privatization_clauses (tree);
7688 extern void save_omp_privatization_clauses (vec<tree> &);
7689 extern void restore_omp_privatization_clauses (vec<tree> &);
7690 extern void finish_omp_threadprivate (tree);
7691 extern tree begin_omp_structured_block (void);
7692 extern tree finish_omp_structured_block (tree);
7693 extern tree finish_oacc_data (tree, tree);
7694 extern tree finish_oacc_host_data (tree, tree);
7695 extern tree finish_omp_construct (enum tree_code, tree, tree);
7696 extern tree begin_omp_parallel (void);
7697 extern tree finish_omp_parallel (tree, tree);
7698 extern tree begin_omp_task (void);
7699 extern tree finish_omp_task (tree, tree);
7700 extern tree finish_omp_for (location_t, enum tree_code,
7701 tree, tree, tree, tree, tree,
7702 tree, tree, vec<tree> *, tree);
7703 extern tree finish_omp_for_block (tree, tree);
7704 extern void finish_omp_atomic (location_t, enum tree_code,
7705 enum tree_code, tree, tree,
7706 tree, tree, tree, tree, tree,
7707 enum omp_memory_order, bool);
7708 extern void finish_omp_barrier (void);
7709 extern void finish_omp_depobj (location_t, tree,
7710 enum omp_clause_depend_kind,
7711 tree);
7712 extern void finish_omp_flush (int);
7713 extern void finish_omp_taskwait (void);
7714 extern void finish_omp_taskyield (void);
7715 extern void finish_omp_cancel (tree);
7716 extern void finish_omp_cancellation_point (tree);
7717 extern tree omp_privatize_field (tree, bool);
7718 extern tree begin_transaction_stmt (location_t, tree *, int);
7719 extern void finish_transaction_stmt (tree, tree, int, tree);
7720 extern tree build_transaction_expr (location_t, tree, int, tree);
7721 extern bool cxx_omp_create_clause_info (tree, tree, bool, bool,
7722 bool, bool);
7723 extern tree baselink_for_fns (tree);
7724 extern void finish_static_assert (tree, tree, location_t,
7725 bool, bool);
7726 extern tree finish_decltype_type (tree, bool, tsubst_flags_t);
7727 extern tree fold_builtin_is_corresponding_member (location_t, int, tree *);
7728 extern tree fold_builtin_is_pointer_inverconvertible_with_class (location_t, int, tree *);
7729 extern tree finish_trait_expr (location_t, enum cp_trait_kind, tree, tree);
7730 extern tree build_lambda_expr (void);
7731 extern tree build_lambda_object (tree);
7732 extern tree begin_lambda_type (tree);
7733 extern tree lambda_capture_field_type (tree, bool, bool);
7734 extern tree lambda_proxy_type (tree);
7735 extern tree lambda_function (tree);
7736 extern void apply_deduced_return_type (tree, tree);
7737 extern tree add_capture (tree, tree, tree, bool, bool);
7738 extern tree add_default_capture (tree, tree, tree);
7739 extern void insert_capture_proxy (tree);
7740 extern void insert_pending_capture_proxies (void);
7741 extern bool is_capture_proxy (tree);
7742 extern bool is_normal_capture_proxy (tree);
7743 extern bool is_constant_capture_proxy (tree);
7744 extern void register_capture_members (tree);
7745 extern tree lambda_expr_this_capture (tree, int);
7746 extern void maybe_generic_this_capture (tree, tree);
7747 extern tree maybe_resolve_dummy (tree, bool);
7748 extern tree current_nonlambda_function (void);
7749 extern tree nonlambda_method_basetype (void);
7750 extern tree current_nonlambda_scope (void);
7751 extern tree current_lambda_expr (void);
7752 extern bool generic_lambda_fn_p (tree);
7753 extern tree do_dependent_capture (tree, bool = false);
7754 extern bool lambda_fn_in_template_p (tree);
7755 extern void maybe_add_lambda_conv_op (tree);
7756 extern bool is_lambda_ignored_entity (tree);
7757 extern bool lambda_static_thunk_p (tree);
7758 extern bool call_from_lambda_thunk_p (tree);
7759 extern tree finish_builtin_launder (location_t, tree,
7760 tsubst_flags_t);
7761 extern tree cp_build_vec_convert (tree, location_t, tree,
7762 tsubst_flags_t);
7763 extern tree cp_build_bit_cast (location_t, tree, tree,
7764 tsubst_flags_t);
7765 extern void start_lambda_scope (tree);
7766 extern void record_lambda_scope (tree);
7767 extern void record_null_lambda_scope (tree);
7768 extern void finish_lambda_scope (void);
7769 extern tree start_lambda_function (tree fn, tree lambda_expr);
7770 extern void finish_lambda_function (tree body);
7771 extern bool regenerated_lambda_fn_p (tree);
7772 extern tree lambda_regenerating_args (tree);
7773 extern tree most_general_lambda (tree);
7774 extern tree finish_omp_target (location_t, tree, tree, bool);
7775 extern void finish_omp_target_clauses (location_t, tree, tree *);
7776
7777 /* in tree.cc */
7778 extern int cp_tree_operand_length (const_tree);
7779 extern int cp_tree_code_length (enum tree_code);
7780 extern void cp_free_lang_data (tree t);
7781 extern tree force_target_expr (tree, tree, tsubst_flags_t);
7782 extern tree build_target_expr_with_type (tree, tree, tsubst_flags_t);
7783 extern void lang_check_failed (const char *, int,
7784 const char *) ATTRIBUTE_NORETURN
7785 ATTRIBUTE_COLD;
7786 extern tree stabilize_expr (tree, tree *);
7787 extern void stabilize_call (tree, tree *);
7788 extern bool stabilize_init (tree, tree *);
7789 extern tree add_stmt_to_compound (tree, tree);
7790 extern void init_tree (void);
7791 extern bool pod_type_p (const_tree);
7792 extern bool layout_pod_type_p (const_tree);
7793 extern bool std_layout_type_p (const_tree);
7794 extern bool trivial_type_p (const_tree);
7795 extern bool trivially_copyable_p (const_tree);
7796 extern bool type_has_unique_obj_representations (const_tree);
7797 extern bool scalarish_type_p (const_tree);
7798 extern bool structural_type_p (tree, bool = false);
7799 extern bool type_has_nontrivial_default_init (const_tree);
7800 extern bool type_has_nontrivial_copy_init (const_tree);
7801 extern void maybe_warn_parm_abi (tree, location_t);
7802 extern bool class_tmpl_impl_spec_p (const_tree);
7803 extern int zero_init_p (const_tree);
7804 extern bool zero_init_expr_p (tree);
7805 extern bool check_abi_tag_redeclaration (const_tree, const_tree,
7806 const_tree);
7807 extern bool check_abi_tag_args (tree, tree);
7808 extern tree strip_typedefs (tree, bool * = NULL,
7809 unsigned int = 0);
7810 extern tree strip_typedefs_expr (tree, bool * = NULL,
7811 unsigned int = 0);
7812 extern tree copy_binfo (tree, tree, tree,
7813 tree *, int);
7814 extern int member_p (const_tree);
7815 extern cp_lvalue_kind real_lvalue_p (const_tree);
7816 extern cp_lvalue_kind lvalue_kind (const_tree);
7817 extern bool glvalue_p (const_tree);
7818 extern bool obvalue_p (const_tree);
7819 extern bool xvalue_p (const_tree);
7820 extern bool bitfield_p (const_tree);
7821 extern tree cp_stabilize_reference (tree);
7822 extern bool builtin_valid_in_constant_expr_p (const_tree);
7823 extern tree build_min (enum tree_code, tree, ...);
7824 extern tree build_min_nt_loc (location_t, enum tree_code,
7825 ...);
7826 extern tree build_min_non_dep (enum tree_code, tree, ...);
7827 extern tree build_min_non_dep_op_overload (enum tree_code, tree, tree, ...);
7828 extern tree build_min_non_dep_op_overload (tree, tree, tree,
7829 vec<tree, va_gc> *);
7830 extern tree build_min_nt_call_vec (tree, vec<tree, va_gc> *);
7831 extern tree build_min_non_dep_call_vec (tree, tree, vec<tree, va_gc> *);
7832 extern vec<tree, va_gc>* vec_copy_and_insert (vec<tree, va_gc>*, tree, unsigned);
7833 extern tree build_cplus_new (tree, tree, tsubst_flags_t);
7834 extern tree build_local_temp (tree);
7835 extern bool is_local_temp (tree);
7836 extern tree build_aggr_init_expr (tree, tree);
7837 extern tree get_target_expr (tree);
7838 extern tree get_target_expr_sfinae (tree, tsubst_flags_t);
7839 extern tree build_cplus_array_type (tree, tree, int is_dep = -1);
7840 extern tree build_array_of_n_type (tree, int);
7841 extern bool array_of_runtime_bound_p (tree);
7842 extern bool vla_type_p (tree);
7843 extern tree build_array_copy (tree);
7844 extern tree build_vec_init_expr (tree, tree, tsubst_flags_t);
7845 extern tree expand_vec_init_expr (tree, tree, tsubst_flags_t,
7846 vec<tree,va_gc>** = nullptr);
7847 extern void diagnose_non_constexpr_vec_init (tree);
7848 extern tree hash_tree_cons (tree, tree, tree);
7849 extern tree hash_tree_chain (tree, tree);
7850 extern tree build_qualified_name (tree, tree, tree, bool);
7851 extern tree build_ref_qualified_type (tree, cp_ref_qualifier);
7852 extern tree make_binding_vec (tree, unsigned clusters CXX_MEM_STAT_INFO);
7853 inline tree ovl_first (tree) ATTRIBUTE_PURE;
7854 extern tree ovl_make (tree fn,
7855 tree next = NULL_TREE);
7856 extern tree ovl_insert (tree fn, tree maybe_ovl,
7857 int using_or_hidden = 0);
7858 extern tree ovl_skip_hidden (tree) ATTRIBUTE_PURE;
7859 extern void lookup_mark (tree lookup, bool val);
7860 extern tree lookup_add (tree fns, tree lookup);
7861 extern tree lookup_maybe_add (tree fns, tree lookup,
7862 bool deduping);
7863 extern int is_overloaded_fn (tree) ATTRIBUTE_PURE;
7864 extern bool really_overloaded_fn (tree) ATTRIBUTE_PURE;
7865 extern tree dependent_name (tree);
7866 extern tree call_expr_dependent_name (tree);
7867 extern tree maybe_get_fns (tree) ATTRIBUTE_PURE;
7868 extern tree get_fns (tree) ATTRIBUTE_PURE;
7869 extern tree get_first_fn (tree) ATTRIBUTE_PURE;
7870 extern tree ovl_scope (tree);
7871 extern const char *cxx_printable_name (tree, int);
7872 extern const char *cxx_printable_name_translate (tree, int);
7873 extern tree canonical_eh_spec (tree);
7874 extern tree build_cp_fntype_variant (tree, cp_ref_qualifier, tree, bool);
7875 extern tree build_exception_variant (tree, tree);
7876 extern void fixup_deferred_exception_variants (tree, tree);
7877 extern tree bind_template_template_parm (tree, tree);
7878 extern tree array_type_nelts_total (tree);
7879 extern tree array_type_nelts_top (tree);
7880 extern bool array_of_unknown_bound_p (const_tree);
7881 extern bool source_location_current_p (tree);
7882 extern tree break_out_target_exprs (tree, bool = false);
7883 extern tree build_ctor_subob_ref (tree, tree, tree);
7884 extern tree replace_placeholders (tree, tree, bool * = NULL);
7885 extern bool find_placeholders (tree);
7886 extern tree get_type_decl (tree);
7887 extern tree decl_namespace_context (tree);
7888 extern bool decl_anon_ns_mem_p (const_tree);
7889 extern tree lvalue_type (tree);
7890 extern tree error_type (tree);
7891 extern int varargs_function_p (const_tree);
7892 extern bool cp_tree_equal (tree, tree);
7893 extern tree no_linkage_check (tree, bool);
7894 extern void debug_binfo (tree);
7895 extern tree build_dummy_object (tree);
7896 extern tree maybe_dummy_object (tree, tree *);
7897 extern bool is_dummy_object (const_tree);
7898 extern bool is_byte_access_type (tree);
7899 extern bool is_byte_access_type_not_plain_char (tree);
7900 extern const struct attribute_spec cxx_attribute_table[];
7901 extern tree make_ptrmem_cst (tree, tree);
7902 extern tree cp_build_type_attribute_variant (tree, tree);
7903 extern tree cp_build_reference_type (tree, bool);
7904 extern tree move (tree);
7905 extern tree cp_build_qualified_type_real (tree, int, tsubst_flags_t);
7906 #define cp_build_qualified_type(TYPE, QUALS) \
7907 cp_build_qualified_type_real ((TYPE), (QUALS), tf_warning_or_error)
7908 extern bool cv_qualified_p (const_tree);
7909 extern tree cv_unqualified (tree);
7910 extern special_function_kind special_function_p (const_tree);
7911 extern special_function_kind special_memfn_p (const_tree);
7912 extern int count_trees (tree);
7913 extern int char_type_p (tree);
7914 extern void verify_stmt_tree (tree);
7915 extern linkage_kind decl_linkage (tree);
7916 extern duration_kind decl_storage_duration (tree);
7917 extern tree cp_walk_subtrees (tree*, int*, walk_tree_fn,
7918 void*, hash_set<tree> *);
7919 #define cp_walk_tree(tp,func,data,pset) \
7920 walk_tree_1 (tp, func, data, pset, cp_walk_subtrees)
7921 #define cp_walk_tree_without_duplicates(tp,func,data) \
7922 walk_tree_without_duplicates_1 (tp, func, data, cp_walk_subtrees)
7923 extern tree rvalue (tree);
7924 extern tree convert_bitfield_to_declared_type (tree);
7925 extern tree cp_save_expr (tree);
7926 extern bool cast_valid_in_integral_constant_expression_p (tree);
7927 extern bool cxx_type_hash_eq (const_tree, const_tree);
7928 extern tree cxx_copy_lang_qualifiers (const_tree, const_tree);
7929
7930 extern void cxx_print_statistics (void);
7931 extern bool maybe_warn_zero_as_null_pointer_constant (tree, location_t);
7932
7933 /* in ptree.cc */
7934 extern void cxx_print_xnode (FILE *, tree, int);
7935 extern void cxx_print_decl (FILE *, tree, int);
7936 extern void cxx_print_type (FILE *, tree, int);
7937 extern void cxx_print_identifier (FILE *, tree, int);
7938 extern void cxx_print_error_function (diagnostic_context *,
7939 const char *,
7940 struct diagnostic_info *);
7941
7942 /* in typeck.cc */
7943 /* Says how we should behave when comparing two arrays one of which
7944 has unknown bounds. */
7945 enum compare_bounds_t { bounds_none, bounds_either, bounds_first };
7946
7947 extern bool cxx_mark_addressable (tree, bool = false);
7948 extern int string_conv_p (const_tree, const_tree, int);
7949 extern tree cp_truthvalue_conversion (tree, tsubst_flags_t);
7950 extern tree contextual_conv_bool (tree, tsubst_flags_t);
7951 extern tree condition_conversion (tree);
7952 extern tree require_complete_type (tree);
7953 extern tree require_complete_type_sfinae (tree, tsubst_flags_t);
7954 extern tree complete_type (tree);
7955 extern tree complete_type_or_else (tree, tree);
7956 extern tree complete_type_or_maybe_complain (tree, tree, tsubst_flags_t);
7957 inline bool type_unknown_p (const_tree);
7958 enum { ce_derived, ce_type, ce_normal, ce_exact };
7959 extern bool comp_except_specs (const_tree, const_tree, int);
7960 extern bool comptypes (tree, tree, int);
7961 extern bool same_type_ignoring_top_level_qualifiers_p (tree, tree);
7962 extern bool similar_type_p (tree, tree);
7963 extern bool next_common_initial_sequence (tree &, tree &);
7964 extern bool layout_compatible_type_p (tree, tree);
7965 extern bool compparms (const_tree, const_tree);
7966 extern int comp_cv_qualification (const_tree, const_tree);
7967 extern int comp_cv_qualification (int, int);
7968 extern int comp_cv_qual_signature (tree, tree);
7969 extern tree cxx_sizeof_or_alignof_expr (location_t, tree,
7970 enum tree_code, bool, bool);
7971 extern tree cxx_sizeof_or_alignof_type (location_t, tree,
7972 enum tree_code, bool, bool);
7973 extern tree cxx_alignas_expr (tree);
7974 extern tree cxx_sizeof_nowarn (tree);
7975 extern tree is_bitfield_expr_with_lowered_type (const_tree);
7976 extern tree unlowered_expr_type (const_tree);
7977 extern tree decay_conversion (tree,
7978 tsubst_flags_t,
7979 bool = true);
7980 extern tree build_class_member_access_expr (cp_expr, tree, tree, bool,
7981 tsubst_flags_t);
7982 extern tree finish_class_member_access_expr (cp_expr, tree, bool,
7983 tsubst_flags_t);
7984 extern tree lookup_destructor (tree, tree, tree, tsubst_flags_t);
7985 extern tree build_dependent_operator_type (tree, enum tree_code, bool);
7986 extern tree build_x_indirect_ref (location_t, tree,
7987 ref_operator, tree,
7988 tsubst_flags_t);
7989 extern tree cp_build_indirect_ref (location_t, tree,
7990 ref_operator,
7991 tsubst_flags_t);
7992 extern tree cp_build_fold_indirect_ref (tree);
7993 extern tree build_array_ref (location_t, tree, tree);
7994 extern tree cp_build_array_ref (location_t, tree, tree,
7995 tsubst_flags_t);
7996 extern tree get_member_function_from_ptrfunc (tree *, tree, tsubst_flags_t);
7997 extern tree cp_build_function_call_nary (tree, tsubst_flags_t, ...)
7998 ATTRIBUTE_SENTINEL;
7999 extern tree cp_build_function_call_vec (tree, vec<tree, va_gc> **,
8000 tsubst_flags_t,
8001 tree = NULL_TREE);
8002 extern tree build_x_binary_op (const op_location_t &,
8003 enum tree_code, tree,
8004 enum tree_code, tree,
8005 enum tree_code, tree,
8006 tree *, tsubst_flags_t);
build_x_binary_op(const op_location_t & loc,enum tree_code code,tree arg1,tree arg2,tsubst_flags_t complain)8007 inline tree build_x_binary_op (const op_location_t &loc,
8008 enum tree_code code, tree arg1, tree arg2,
8009 tsubst_flags_t complain)
8010 {
8011 return build_x_binary_op (loc, code, arg1, TREE_CODE (arg1), arg2,
8012 TREE_CODE (arg2), NULL_TREE, NULL, complain);
8013 }
8014 extern tree build_x_array_ref (location_t, tree, tree,
8015 tsubst_flags_t);
8016 extern tree build_x_unary_op (location_t,
8017 enum tree_code, cp_expr,
8018 tree, tsubst_flags_t);
8019 extern tree cp_build_addressof (location_t, tree,
8020 tsubst_flags_t);
8021 extern tree cp_build_addr_expr (tree, tsubst_flags_t);
8022 extern tree cp_build_unary_op (enum tree_code, tree, bool,
8023 tsubst_flags_t);
8024 extern tree genericize_compound_lvalue (tree);
8025 extern tree unary_complex_lvalue (enum tree_code, tree);
8026 extern tree build_x_conditional_expr (location_t, tree, tree, tree,
8027 tsubst_flags_t);
8028 extern tree build_x_compound_expr_from_list (tree, expr_list_kind,
8029 tsubst_flags_t);
8030 extern tree build_x_compound_expr_from_vec (vec<tree, va_gc> *,
8031 const char *, tsubst_flags_t);
8032 extern tree build_x_compound_expr (location_t, tree, tree,
8033 tree, tsubst_flags_t);
8034 extern tree build_compound_expr (location_t, tree, tree);
8035 extern tree cp_build_compound_expr (tree, tree, tsubst_flags_t);
8036 extern tree build_static_cast (location_t, tree, tree,
8037 tsubst_flags_t);
8038 extern tree build_reinterpret_cast (location_t, tree, tree,
8039 tsubst_flags_t);
8040 extern tree build_const_cast (location_t, tree, tree,
8041 tsubst_flags_t);
8042 extern tree build_c_cast (location_t, tree, tree);
8043 extern cp_expr build_c_cast (location_t loc, tree type,
8044 cp_expr expr);
8045 extern tree cp_build_c_cast (location_t, tree, tree,
8046 tsubst_flags_t);
8047 extern cp_expr build_x_modify_expr (location_t, tree,
8048 enum tree_code, tree,
8049 tree, tsubst_flags_t);
8050 extern tree cp_build_modify_expr (location_t, tree,
8051 enum tree_code, tree,
8052 tsubst_flags_t);
8053 extern tree convert_for_initialization (tree, tree, tree, int,
8054 impl_conv_rhs, tree, int,
8055 tsubst_flags_t);
8056 extern int comp_ptr_ttypes (tree, tree);
8057 extern bool comp_ptr_ttypes_const (tree, tree, compare_bounds_t);
8058 extern bool error_type_p (const_tree);
8059 extern bool ptr_reasonably_similar (const_tree, const_tree);
8060 extern tree build_ptrmemfunc (tree, tree, int, bool,
8061 tsubst_flags_t);
8062 extern int cp_type_quals (const_tree);
8063 extern int type_memfn_quals (const_tree);
8064 extern cp_ref_qualifier type_memfn_rqual (const_tree);
8065 extern tree apply_memfn_quals (tree, cp_cv_quals,
8066 cp_ref_qualifier = REF_QUAL_NONE);
8067 extern bool cp_has_mutable_p (const_tree);
8068 extern bool at_least_as_qualified_p (const_tree, const_tree);
8069 extern void cp_apply_type_quals_to_decl (int, tree);
8070 extern tree build_ptrmemfunc1 (tree, tree, tree);
8071 extern void expand_ptrmemfunc_cst (tree, tree *, tree *);
8072 extern tree type_after_usual_arithmetic_conversions (tree, tree);
8073 extern tree common_pointer_type (tree, tree);
8074 extern tree composite_pointer_type (const op_location_t &,
8075 tree, tree, tree, tree,
8076 composite_pointer_operation,
8077 tsubst_flags_t);
8078 extern tree merge_types (tree, tree);
8079 extern tree strip_array_domain (tree);
8080 extern tree check_return_expr (tree, bool *);
8081 extern tree spaceship_type (tree, tsubst_flags_t = tf_warning_or_error);
8082 extern tree genericize_spaceship (location_t, tree, tree, tree);
8083 extern tree cp_build_binary_op (const op_location_t &,
8084 enum tree_code, tree, tree,
8085 tsubst_flags_t);
8086 extern tree build_x_vec_perm_expr (location_t,
8087 tree, tree, tree,
8088 tsubst_flags_t);
8089 extern tree build_x_shufflevector (location_t,
8090 vec<tree, va_gc> *,
8091 tsubst_flags_t);
8092 #define cxx_sizeof(T) cxx_sizeof_or_alignof_type (input_location, T, SIZEOF_EXPR, false, true)
8093 extern tree build_simple_component_ref (tree, tree);
8094 extern tree build_ptrmemfunc_access_expr (tree, tree);
8095 extern tree build_address (tree);
8096 extern tree build_nop (tree, tree);
8097 extern tree non_reference (tree);
8098 extern tree lookup_anon_field (tree, tree);
8099 extern bool invalid_nonstatic_memfn_p (location_t, tree,
8100 tsubst_flags_t);
8101 extern tree convert_member_func_to_ptr (tree, tree, tsubst_flags_t);
8102 extern tree convert_ptrmem (tree, tree, bool, bool,
8103 tsubst_flags_t);
8104 extern int lvalue_or_else (tree, enum lvalue_use,
8105 tsubst_flags_t);
8106 extern void check_template_keyword (tree);
8107 extern bool check_raw_literal_operator (const_tree decl);
8108 extern bool check_literal_operator_args (const_tree, bool *, bool *);
8109 extern void maybe_warn_about_useless_cast (location_t, tree, tree,
8110 tsubst_flags_t);
8111 extern tree cp_perform_integral_promotions (tree, tsubst_flags_t);
8112
8113 extern tree finish_left_unary_fold_expr (tree, int);
8114 extern tree finish_right_unary_fold_expr (tree, int);
8115 extern tree finish_binary_fold_expr (tree, tree, int);
8116 extern tree treat_lvalue_as_rvalue_p (tree, bool);
8117 extern bool decl_in_std_namespace_p (tree);
8118
8119 /* in typeck2.cc */
8120 extern void require_complete_eh_spec_types (tree, tree);
8121 extern void cxx_incomplete_type_diagnostic (location_t, const_tree,
8122 const_tree, diagnostic_t);
8123 inline location_t
loc_or_input_loc(location_t loc)8124 loc_or_input_loc (location_t loc)
8125 {
8126 return loc == UNKNOWN_LOCATION ? input_location : loc;
8127 }
8128
8129 inline location_t
cp_expr_loc_or_loc(const_tree t,location_t or_loc)8130 cp_expr_loc_or_loc (const_tree t, location_t or_loc)
8131 {
8132 location_t loc = cp_expr_location (t);
8133 if (loc == UNKNOWN_LOCATION)
8134 loc = or_loc;
8135 return loc;
8136 }
8137
8138 inline location_t
cp_expr_loc_or_input_loc(const_tree t)8139 cp_expr_loc_or_input_loc (const_tree t)
8140 {
8141 return cp_expr_loc_or_loc (t, input_location);
8142 }
8143
8144 inline void
cxx_incomplete_type_diagnostic(const_tree value,const_tree type,diagnostic_t diag_kind)8145 cxx_incomplete_type_diagnostic (const_tree value, const_tree type,
8146 diagnostic_t diag_kind)
8147 {
8148 cxx_incomplete_type_diagnostic (cp_expr_loc_or_input_loc (value),
8149 value, type, diag_kind);
8150 }
8151
8152 extern void cxx_incomplete_type_error (location_t, const_tree,
8153 const_tree);
8154 inline void
cxx_incomplete_type_error(const_tree value,const_tree type)8155 cxx_incomplete_type_error (const_tree value, const_tree type)
8156 {
8157 cxx_incomplete_type_diagnostic (value, type, DK_ERROR);
8158 }
8159
8160 extern void cxx_incomplete_type_inform (const_tree);
8161 extern tree error_not_base_type (tree, tree);
8162 extern tree binfo_or_else (tree, tree);
8163 extern void cxx_readonly_error (location_t, tree,
8164 enum lvalue_use);
8165 extern void complete_type_check_abstract (tree);
8166 extern int abstract_virtuals_error (tree, tree);
8167 extern int abstract_virtuals_error (abstract_class_use, tree);
8168 extern int abstract_virtuals_error_sfinae (tree, tree, tsubst_flags_t);
8169 extern int abstract_virtuals_error_sfinae (abstract_class_use, tree, tsubst_flags_t);
8170
8171 extern tree store_init_value (tree, tree, vec<tree, va_gc>**, int);
8172 extern tree split_nonconstant_init (tree, tree);
8173 extern bool check_narrowing (tree, tree, tsubst_flags_t,
8174 bool = false);
8175 extern bool ordinary_char_type_p (tree);
8176 extern bool array_string_literal_compatible_p (tree, tree);
8177 extern tree digest_init (tree, tree, tsubst_flags_t);
8178 extern tree digest_init_flags (tree, tree, int, tsubst_flags_t);
8179 extern tree digest_nsdmi_init (tree, tree, tsubst_flags_t);
8180 extern tree build_scoped_ref (tree, tree, tree *);
8181 extern tree build_x_arrow (location_t, tree,
8182 tsubst_flags_t);
8183 extern tree build_m_component_ref (tree, tree, tsubst_flags_t);
8184 extern tree build_functional_cast (location_t, tree, tree,
8185 tsubst_flags_t);
8186 extern tree add_exception_specifier (tree, tree, tsubst_flags_t);
8187 extern tree merge_exception_specifiers (tree, tree);
8188
8189 /* in mangle.cc */
8190 extern void init_mangle (void);
8191 extern void mangle_decl (tree);
8192 extern const char *mangle_type_string (tree);
8193 extern tree mangle_typeinfo_for_type (tree);
8194 extern tree mangle_typeinfo_string_for_type (tree);
8195 extern tree mangle_vtbl_for_type (tree);
8196 extern tree mangle_vtt_for_type (tree);
8197 extern tree mangle_ctor_vtbl_for_type (tree, tree);
8198 extern tree mangle_thunk (tree, int, tree, tree, tree);
8199 extern tree mangle_guard_variable (tree);
8200 extern tree mangle_tls_init_fn (tree);
8201 extern tree mangle_tls_wrapper_fn (tree);
8202 extern bool decl_tls_wrapper_p (tree);
8203 extern tree mangle_ref_init_variable (tree);
8204 extern tree mangle_template_parm_object (tree);
8205 extern char *get_mangled_vtable_map_var_name (tree);
8206 extern bool mangle_return_type_p (tree);
8207 extern tree mangle_decomp (tree, vec<tree> &);
8208 extern void mangle_module_substitution (int);
8209 extern int mangle_module_component (tree id, bool partition);
8210 extern tree mangle_module_global_init (int);
8211
8212 /* in dump.cc */
8213 extern bool cp_dump_tree (void *, tree);
8214
8215 /* In cp/cp-objcp-common.cc. */
8216
8217 extern alias_set_type cxx_get_alias_set (tree);
8218 extern bool cxx_warn_unused_global_decl (const_tree);
8219 extern size_t cp_tree_size (enum tree_code);
8220 extern bool cp_var_mod_type_p (tree, tree);
8221 extern void cxx_initialize_diagnostics (diagnostic_context *);
8222 extern int cxx_types_compatible_p (tree, tree);
8223 extern bool cxx_block_may_fallthru (const_tree);
8224
8225 /* in cp-gimplify.cc */
8226 extern int cp_gimplify_expr (tree *, gimple_seq *,
8227 gimple_seq *);
8228 extern void cp_genericize (tree);
8229 extern bool cxx_omp_const_qual_no_mutable (tree);
8230 extern enum omp_clause_default_kind cxx_omp_predetermined_sharing_1 (tree);
8231 extern enum omp_clause_default_kind cxx_omp_predetermined_sharing (tree);
8232 extern enum omp_clause_defaultmap_kind cxx_omp_predetermined_mapping (tree);
8233 extern tree cxx_omp_clause_default_ctor (tree, tree, tree);
8234 extern tree cxx_omp_clause_copy_ctor (tree, tree, tree);
8235 extern tree cxx_omp_clause_assign_op (tree, tree, tree);
8236 extern tree cxx_omp_clause_dtor (tree, tree);
8237 extern void cxx_omp_finish_clause (tree, gimple_seq *, bool);
8238 extern bool cxx_omp_privatize_by_reference (const_tree);
8239 extern bool cxx_omp_disregard_value_expr (tree, bool);
8240 extern void cp_fold_function (tree);
8241 extern tree cp_fold_maybe_rvalue (tree, bool);
8242 extern tree cp_fold_rvalue (tree);
8243 extern tree cp_fully_fold (tree);
8244 extern tree cp_fully_fold_init (tree);
8245 extern tree predeclare_vla (tree);
8246 extern void clear_fold_cache (void);
8247 extern tree lookup_hotness_attribute (tree);
8248 extern tree process_stmt_hotness_attribute (tree, location_t);
8249 extern bool simple_empty_class_p (tree, tree, tree_code);
8250 extern tree fold_builtin_source_location (location_t);
8251
8252 /* in name-lookup.cc */
8253 extern tree strip_using_decl (tree);
8254 extern void diagnose_name_conflict (tree, tree);
8255 extern bool dependent_local_decl_p (tree);
8256
8257 /* Tell the binding oracle what kind of binding we are looking for. */
8258
8259 enum cp_oracle_request
8260 {
8261 CP_ORACLE_IDENTIFIER
8262 };
8263
8264 /* If this is non-NULL, then it is a "binding oracle" which can lazily
8265 create bindings when needed by the C compiler. The oracle is told
8266 the name and type of the binding to create. It can call pushdecl
8267 or the like to ensure the binding is visible; or do nothing,
8268 leaving the binding untouched. c-decl.cc takes note of when the
8269 oracle has been called and will not call it again if it fails to
8270 create a given binding. */
8271
8272 typedef void cp_binding_oracle_function (enum cp_oracle_request, tree identifier);
8273
8274 extern cp_binding_oracle_function *cp_binding_oracle;
8275
8276 /* Set during diagnostics to record the failed constraint. This is a
8277 TREE_LIST whose VALUE is the constraint and whose PURPOSE are the
8278 instantiation arguments Defined in pt.cc. */
8279
8280 extern tree current_failed_constraint;
8281
8282 /* An RAII class to manage the failed constraint. */
8283
8284 struct diagnosing_failed_constraint
8285 {
8286 diagnosing_failed_constraint (tree, tree, bool);
8287 ~diagnosing_failed_constraint ();
8288 static bool replay_errors_p ();
8289
8290 bool diagnosing_error;
8291 };
8292
8293 /* in constraint.cc */
8294
8295 extern cp_expr finish_constraint_or_expr (location_t, cp_expr, cp_expr);
8296 extern cp_expr finish_constraint_and_expr (location_t, cp_expr, cp_expr);
8297 extern cp_expr finish_constraint_primary_expr (cp_expr);
8298 extern tree finish_concept_definition (cp_expr, tree);
8299 extern tree combine_constraint_expressions (tree, tree);
8300 extern tree append_constraint (tree, tree);
8301 extern tree get_constraints (const_tree);
8302 extern void set_constraints (tree, tree);
8303 extern void remove_constraints (tree);
8304 extern tree current_template_constraints (void);
8305 extern tree associate_classtype_constraints (tree);
8306 extern tree build_constraints (tree, tree);
8307 extern tree maybe_substitute_reqs_for (tree, const_tree);
8308 extern tree get_trailing_function_requirements (tree);
8309 extern tree get_shorthand_constraints (tree);
8310
8311 extern tree build_concept_id (tree);
8312 extern tree build_type_constraint (tree, tree, tsubst_flags_t);
8313 extern tree build_concept_check (tree, tree, tsubst_flags_t);
8314 extern tree build_concept_check (tree, tree, tree, tsubst_flags_t);
8315
8316 extern tree_pair finish_type_constraints (tree, tree, tsubst_flags_t);
8317 extern tree build_constrained_parameter (tree, tree, tree = NULL_TREE);
8318 extern void placeholder_extract_concept_and_args (tree, tree&, tree&);
8319 extern bool equivalent_placeholder_constraints (tree, tree);
8320 extern hashval_t hash_placeholder_constraint (tree);
8321 extern bool deduce_constrained_parameter (tree, tree&, tree&);
8322 extern tree resolve_constraint_check (tree);
8323 extern tree check_function_concept (tree);
8324 extern tree finish_template_introduction (tree, tree, location_t loc);
8325 extern bool valid_requirements_p (tree);
8326 extern tree finish_concept_name (tree);
8327 extern tree finish_shorthand_constraint (tree, tree);
8328 extern tree finish_requires_expr (location_t, tree, tree);
8329 extern tree finish_simple_requirement (location_t, tree);
8330 extern tree finish_type_requirement (location_t, tree);
8331 extern tree finish_compound_requirement (location_t, tree, tree, bool);
8332 extern tree finish_nested_requirement (location_t, tree);
8333 extern tree tsubst_requires_expr (tree, tree, tsubst_flags_t, tree);
8334 extern tree evaluate_requires_expr (tree);
8335 extern tree tsubst_constraint (tree, tree, tsubst_flags_t, tree);
8336 extern tree tsubst_constraint_info (tree, tree, tsubst_flags_t, tree);
8337 extern tree tsubst_parameter_mapping (tree, tree, tsubst_flags_t, tree);
8338
8339 struct processing_constraint_expression_sentinel
8340 {
8341 processing_constraint_expression_sentinel ();
8342 ~processing_constraint_expression_sentinel ();
8343 };
8344
8345 extern bool processing_constraint_expression_p ();
8346
8347 extern tree unpack_concept_check (tree);
8348 extern tree evaluate_concept_check (tree);
8349 extern bool constraints_satisfied_p (tree, tree = NULL_TREE);
8350 extern bool* lookup_subsumption_result (tree, tree);
8351 extern bool save_subsumption_result (tree, tree, bool);
8352 extern tree find_template_parameters (tree, tree);
8353 extern bool equivalent_constraints (tree, tree);
8354 extern bool equivalently_constrained (tree, tree);
8355 extern bool strictly_subsumes (tree, tree);
8356 extern bool weakly_subsumes (tree, tree);
8357 extern int more_constrained (tree, tree);
8358 extern bool at_least_as_constrained (tree, tree);
8359 extern bool constraints_equivalent_p (tree, tree);
8360 extern bool atomic_constraints_identical_p (tree, tree);
8361 extern hashval_t iterative_hash_constraint (tree, hashval_t);
8362 extern hashval_t hash_atomic_constraint (tree);
8363 extern void diagnose_constraints (location_t, tree, tree);
8364
8365 extern void note_failed_type_completion_for_satisfaction (tree);
8366
8367 /* A structural hasher for ATOMIC_CONSTRs. */
8368
8369 struct atom_hasher : default_hash_traits<tree>
8370 {
hashatom_hasher8371 static hashval_t hash (tree t)
8372 {
8373 return hash_atomic_constraint (t);
8374 }
8375
equalatom_hasher8376 static bool equal (tree t1, tree t2)
8377 {
8378 return atomic_constraints_identical_p (t1, t2);
8379 }
8380 };
8381
8382 /* in logic.cc */
8383 extern bool subsumes (tree, tree);
8384
8385 /* In class.cc */
8386 extern void set_current_access_from_decl (tree);
8387 extern void cp_finish_injected_record_type (tree);
8388
8389 /* in vtable-class-hierarchy.cc */
8390 extern void vtv_compute_class_hierarchy_transitive_closure (void);
8391 extern void vtv_generate_init_routine (void);
8392 extern void vtv_save_class_info (tree);
8393 extern void vtv_recover_class_info (void);
8394 extern void vtv_build_vtable_verify_fndecl (void);
8395
8396 /* In constexpr.cc */
8397 /* Representation of entries in the constexpr function definition table. */
8398
8399 struct GTY((for_user)) constexpr_fundef {
8400 tree decl;
8401 tree body;
8402 tree parms;
8403 tree result;
8404 };
8405
8406 extern void fini_constexpr (void);
8407 extern bool literal_type_p (tree);
8408 extern void maybe_save_constexpr_fundef (tree);
8409 extern void register_constexpr_fundef (const constexpr_fundef &);
8410 extern constexpr_fundef *retrieve_constexpr_fundef (tree);
8411 extern bool is_valid_constexpr_fn (tree, bool);
8412 extern bool check_constexpr_ctor_body (tree, tree, bool);
8413 extern tree constexpr_fn_retval (tree);
8414 extern tree ensure_literal_type_for_constexpr_object (tree);
8415 extern bool potential_constant_expression (tree);
8416 extern bool is_constant_expression (tree);
8417 extern bool is_rvalue_constant_expression (tree);
8418 extern bool is_nondependent_constant_expression (tree);
8419 extern bool is_nondependent_static_init_expression (tree);
8420 extern bool is_static_init_expression (tree);
8421 extern bool potential_rvalue_constant_expression (tree);
8422 extern bool require_potential_constant_expression (tree);
8423 extern bool require_constant_expression (tree);
8424 extern bool require_rvalue_constant_expression (tree);
8425 extern bool require_potential_rvalue_constant_expression (tree);
8426 extern tree cxx_constant_value (tree, tree = NULL_TREE);
8427 extern tree cxx_constant_value_sfinae (tree, tree, tsubst_flags_t);
8428 extern void cxx_constant_dtor (tree, tree);
8429 extern tree cxx_constant_init (tree, tree = NULL_TREE);
8430 extern tree maybe_constant_value (tree, tree = NULL_TREE, bool = false);
8431 extern tree maybe_constant_init (tree, tree = NULL_TREE, bool = false);
8432 extern tree fold_non_dependent_expr (tree,
8433 tsubst_flags_t = tf_warning_or_error,
8434 bool = false, tree = NULL_TREE);
8435 extern tree maybe_fold_non_dependent_expr (tree,
8436 tsubst_flags_t = tf_warning_or_error);
8437 extern tree fold_non_dependent_init (tree,
8438 tsubst_flags_t = tf_warning_or_error,
8439 bool = false, tree = NULL_TREE);
8440 extern tree fold_simple (tree);
8441 extern tree fold_to_constant (tree);
8442 extern bool reduced_constant_expression_p (tree);
8443 extern bool is_instantiation_of_constexpr (tree);
8444 extern bool var_in_constexpr_fn (tree);
8445 extern bool var_in_maybe_constexpr_fn (tree);
8446 extern bool maybe_constexpr_fn (tree);
8447 extern void explain_invalid_constexpr_fn (tree);
8448 extern vec<tree> cx_error_context (void);
8449 extern tree fold_sizeof_expr (tree);
8450 extern void clear_cv_and_fold_caches (void);
8451 extern tree unshare_constructor (tree CXX_MEM_STAT_INFO);
8452 extern bool decl_implicit_constexpr_p (tree);
8453 extern bool replace_decl (tree *, tree, tree);
8454
8455 /* An RAII sentinel used to restrict constexpr evaluation so that it
8456 doesn't do anything that causes extra DECL_UID generation. */
8457
8458 struct uid_sensitive_constexpr_evaluation_sentinel
8459 {
8460 temp_override<bool> ovr;
8461 uid_sensitive_constexpr_evaluation_sentinel ();
8462 };
8463
8464 /* Used to determine whether uid_sensitive_constexpr_evaluation_p was
8465 called and returned true, indicating that we've restricted constexpr
8466 evaluation in order to avoid UID generation. We use this to control
8467 updates to the fold_cache and cv_cache. */
8468
8469 struct uid_sensitive_constexpr_evaluation_checker
8470 {
8471 const unsigned saved_counter;
8472 uid_sensitive_constexpr_evaluation_checker ();
8473 bool evaluation_restricted_p () const;
8474 };
8475
8476 void cp_tree_c_finish_parsing ();
8477
8478 /* In cp-ubsan.cc */
8479 extern void cp_ubsan_maybe_instrument_member_call (tree);
8480 extern void cp_ubsan_instrument_member_accesses (tree *);
8481 extern tree cp_ubsan_maybe_instrument_downcast (location_t, tree, tree, tree);
8482 extern tree cp_ubsan_maybe_instrument_cast_to_vbase (location_t, tree, tree);
8483 extern void cp_ubsan_maybe_initialize_vtbl_ptrs (tree);
8484
8485 /* In coroutines.cc */
8486 extern tree finish_co_return_stmt (location_t, tree);
8487 extern tree finish_co_await_expr (location_t, tree);
8488 extern tree finish_co_yield_expr (location_t, tree);
8489 extern tree coro_validate_builtin_call (tree,
8490 tsubst_flags_t = tf_warning_or_error);
8491 extern bool morph_fn_to_coro (tree, tree *, tree *);
8492 extern tree coro_get_actor_function (tree);
8493 extern tree coro_get_destroy_function (tree);
8494 extern tree coro_get_ramp_function (tree);
8495
8496 /* Inline bodies. */
8497
8498 inline tree
ovl_first(tree node)8499 ovl_first (tree node)
8500 {
8501 while (TREE_CODE (node) == OVERLOAD)
8502 node = OVL_FUNCTION (node);
8503 return node;
8504 }
8505
8506 inline bool
type_unknown_p(const_tree expr)8507 type_unknown_p (const_tree expr)
8508 {
8509 return TREE_TYPE (expr) == unknown_type_node;
8510 }
8511
8512 inline hashval_t
hash(const value_type decl)8513 named_decl_hash::hash (const value_type decl)
8514 {
8515 tree name = (TREE_CODE (decl) == BINDING_VECTOR
8516 ? BINDING_VECTOR_NAME (decl) : OVL_NAME (decl));
8517 return name ? IDENTIFIER_HASH_VALUE (name) : 0;
8518 }
8519
8520 inline bool
equal(const value_type existing,compare_type candidate)8521 named_decl_hash::equal (const value_type existing, compare_type candidate)
8522 {
8523 tree name = (TREE_CODE (existing) == BINDING_VECTOR
8524 ? BINDING_VECTOR_NAME (existing) : OVL_NAME (existing));
8525 return candidate == name;
8526 }
8527
8528 inline bool
null_node_p(const_tree expr)8529 null_node_p (const_tree expr)
8530 {
8531 STRIP_ANY_LOCATION_WRAPPER (expr);
8532 return expr == null_node;
8533 }
8534
8535 /* True iff T is a variable template declaration. */
8536 inline bool
variable_template_p(tree t)8537 variable_template_p (tree t)
8538 {
8539 if (TREE_CODE (t) != TEMPLATE_DECL)
8540 return false;
8541 if (!PRIMARY_TEMPLATE_P (t))
8542 return false;
8543 if (tree r = DECL_TEMPLATE_RESULT (t))
8544 return VAR_P (r);
8545 return false;
8546 }
8547
8548 /* True iff T is a standard concept definition. This will return
8549 true for both the template and underlying declaration. */
8550
8551 inline bool
standard_concept_p(tree t)8552 standard_concept_p (tree t)
8553 {
8554 if (TREE_CODE (t) == TEMPLATE_DECL)
8555 t = DECL_TEMPLATE_RESULT (t);
8556 return TREE_CODE (t) == CONCEPT_DECL;
8557 }
8558
8559 /* True iff T is a variable concept definition. This will return
8560 true for both the template and the underlying declaration. */
8561
8562 inline bool
variable_concept_p(tree t)8563 variable_concept_p (tree t)
8564 {
8565 if (TREE_CODE (t) == TEMPLATE_DECL)
8566 t = DECL_TEMPLATE_RESULT (t);
8567 return VAR_P (t) && DECL_DECLARED_CONCEPT_P (t);
8568 }
8569
8570 /* True iff T is a function concept definition or an overload set
8571 containing multiple function concepts. This will return true for
8572 both the template and the underlying declaration. */
8573
8574 inline bool
function_concept_p(tree t)8575 function_concept_p (tree t)
8576 {
8577 if (TREE_CODE (t) == OVERLOAD)
8578 t = OVL_FIRST (t);
8579 if (TREE_CODE (t) == TEMPLATE_DECL)
8580 t = DECL_TEMPLATE_RESULT (t);
8581 return TREE_CODE (t) == FUNCTION_DECL && DECL_DECLARED_CONCEPT_P (t);
8582 }
8583
8584 /* True iff T is a standard, variable, or function concept. */
8585
8586 inline bool
concept_definition_p(tree t)8587 concept_definition_p (tree t)
8588 {
8589 if (t == error_mark_node)
8590 return false;
8591
8592 /* Adjust for function concept overloads. */
8593 if (TREE_CODE (t) == OVERLOAD)
8594 t = OVL_FIRST (t);
8595
8596 /* See through templates. */
8597 if (TREE_CODE (t) == TEMPLATE_DECL)
8598 t = DECL_TEMPLATE_RESULT (t);
8599
8600 /* The obvious and easy case. */
8601 if (TREE_CODE (t) == CONCEPT_DECL)
8602 return true;
8603
8604 /* Definitely not a concept. */
8605 if (!VAR_OR_FUNCTION_DECL_P (t))
8606 return false;
8607 if (!DECL_LANG_SPECIFIC (t))
8608 return false;
8609
8610 return DECL_DECLARED_CONCEPT_P (t);
8611 }
8612
8613 /* Same as above, but for const trees. */
8614
8615 inline bool
concept_definition_p(const_tree t)8616 concept_definition_p (const_tree t)
8617 {
8618 return concept_definition_p (const_cast<tree> (t));
8619 }
8620
8621 /* True if t is an expression that checks a concept. */
8622
8623 inline bool
concept_check_p(const_tree t)8624 concept_check_p (const_tree t)
8625 {
8626 if (TREE_CODE (t) == CALL_EXPR)
8627 t = CALL_EXPR_FN (t);
8628 if (t && TREE_CODE (t) == TEMPLATE_ID_EXPR)
8629 return concept_definition_p (TREE_OPERAND (t, 0));
8630 return false;
8631 }
8632
8633 /* Helpers for IMPLICIT_RVALUE_P to look through automatic dereference. */
8634
8635 inline bool
implicit_rvalue_p(const_tree t)8636 implicit_rvalue_p (const_tree t)
8637 {
8638 if (REFERENCE_REF_P (t))
8639 t = TREE_OPERAND (t, 0);
8640 return ((TREE_CODE (t) == NON_LVALUE_EXPR
8641 || TREE_CODE (t) == STATIC_CAST_EXPR)
8642 && IMPLICIT_RVALUE_P (t));
8643 }
8644 inline tree
set_implicit_rvalue_p(tree ot)8645 set_implicit_rvalue_p (tree ot)
8646 {
8647 tree t = ot;
8648 if (REFERENCE_REF_P (t))
8649 t = TREE_OPERAND (t, 0);
8650 IMPLICIT_RVALUE_P (t) = 1;
8651 return ot;
8652 }
8653
8654 /* True if t is a "constrained auto" type-specifier. */
8655
8656 inline bool
is_constrained_auto(const_tree t)8657 is_constrained_auto (const_tree t)
8658 {
8659 return is_auto (t) && PLACEHOLDER_TYPE_CONSTRAINTS_INFO (t);
8660 }
8661
8662 /* True if CODE, a tree code, denotes a tree whose operand is not evaluated
8663 as per [expr.context], i.e., an operand to sizeof, typeof, decltype, or
8664 alignof. */
8665
8666 inline bool
unevaluated_p(tree_code code)8667 unevaluated_p (tree_code code)
8668 {
8669 return (code == DECLTYPE_TYPE
8670 || code == ALIGNOF_EXPR
8671 || code == SIZEOF_EXPR
8672 || code == NOEXCEPT_EXPR
8673 || code == REQUIRES_EXPR);
8674 }
8675
8676 /* RAII class to push/pop the access scope for T. */
8677
8678 struct push_access_scope_guard
8679 {
8680 tree decl;
push_access_scope_guardpush_access_scope_guard8681 push_access_scope_guard (tree t)
8682 : decl (t)
8683 {
8684 if (VAR_OR_FUNCTION_DECL_P (decl)
8685 || TREE_CODE (decl) == TYPE_DECL)
8686 push_access_scope (decl);
8687 else
8688 decl = NULL_TREE;
8689 }
~push_access_scope_guardpush_access_scope_guard8690 ~push_access_scope_guard ()
8691 {
8692 if (decl)
8693 pop_access_scope (decl);
8694 }
8695 };
8696
8697 #if CHECKING_P
8698 namespace selftest {
8699 extern void run_cp_tests (void);
8700
8701 /* Declarations for specific families of tests within cp,
8702 by source file, in alphabetical order. */
8703 extern void cp_pt_cc_tests ();
8704 extern void cp_tree_cc_tests (void);
8705 } // namespace selftest
8706 #endif /* #if CHECKING_P */
8707
8708 /* -- end of C++ */
8709
8710 #endif /* ! GCC_CP_TREE_H */
8711