c++: accepts-invalid with =delete("") [PR111840]
[official-gcc.git] / gcc / cp / cp-tree.h
blob1d7df62961e9ce1ffff85e51ca6e5516b90af867
1 /* Definitions for -*- C++ -*- parsing and type checking.
2 Copyright (C) 1987-2023 Free Software Foundation, Inc.
3 Contributed by Michael Tiemann (tiemann@cygnus.com)
5 This file is part of GCC.
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.
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.
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/>. */
21 #ifndef GCC_CP_TREE_H
22 #define GCC_CP_TREE_H
24 #include "tm.h"
25 #include "hard-reg-set.h"
26 #include "function.h"
27 #include "tristate.h"
28 #include "contracts.h"
30 /* In order for the format checking to accept the C++ front end
31 diagnostic framework extensions, you must include this file before
32 diagnostic-core.h, not after. We override the definition of GCC_DIAG_STYLE
33 in c-common.h. */
34 #undef GCC_DIAG_STYLE
35 #define GCC_DIAG_STYLE __gcc_cxxdiag__
36 #if defined(GCC_DIAGNOSTIC_CORE_H) || defined (GCC_C_COMMON_H)
37 #error \
38 In order for the format checking to accept the C++ front end diagnostic \
39 framework extensions, you must include this file before diagnostic-core.h and \
40 c-common.h, not after.
41 #endif
42 #include "c-family/c-common.h"
43 #include "diagnostic.h"
45 /* A tree node, together with a location, so that we can track locations
46 (and ranges) during parsing.
48 The location is redundant for node kinds that have locations,
49 but not all node kinds do (e.g. constants, and references to
50 params, locals, etc), so we stash a copy here. */
52 inline location_t cp_expr_location (const_tree);
54 class cp_expr
56 public:
57 cp_expr () :
58 m_value (NULL), m_loc (UNKNOWN_LOCATION),
59 m_decimal (false)
62 cp_expr (tree value) :
63 m_value (value), m_loc (cp_expr_location (m_value)),
64 m_decimal (false)
67 cp_expr (tree value, location_t loc):
68 m_value (value), m_loc (loc), m_decimal (false)
70 protected_set_expr_location (value, loc);
73 cp_expr (tree value, location_t loc, bool decimal):
74 m_value (value), m_loc (loc), m_decimal (decimal)
76 protected_set_expr_location (value, loc);
79 /* Implicit conversions to tree. */
80 operator tree () const { return m_value; }
81 tree & operator* () { return m_value; }
82 tree operator* () const { return m_value; }
83 tree & operator-> () { return m_value; }
84 tree operator-> () const { return m_value; }
86 tree get_value () const { return m_value; }
87 location_t get_location () const { return m_loc; }
88 location_t get_start () const
90 source_range src_range = get_range_from_loc (line_table, m_loc);
91 return src_range.m_start;
93 location_t get_finish () const
95 source_range src_range = get_range_from_loc (line_table, m_loc);
96 return src_range.m_finish;
99 void set_location (location_t loc)
101 protected_set_expr_location (m_value, loc);
102 m_loc = loc;
105 void set_range (location_t start, location_t finish)
107 set_location (make_location (m_loc, start, finish));
110 cp_expr& maybe_add_location_wrapper ()
112 m_value = maybe_wrap_with_location (m_value, m_loc);
113 return *this;
116 bool decimal_p () const { return m_decimal; }
118 private:
119 tree m_value;
120 location_t m_loc;
121 bool m_decimal : 1;
124 inline bool
125 operator == (const cp_expr &lhs, tree rhs)
127 return lhs.get_value () == rhs;
131 enum cp_tree_index
133 CPTI_WCHAR_DECL,
134 CPTI_VTABLE_ENTRY_TYPE,
135 CPTI_DELTA_TYPE,
136 CPTI_VTABLE_INDEX_TYPE,
137 CPTI_CLEANUP_TYPE,
138 CPTI_VTT_PARM_TYPE,
140 CPTI_CLASS_TYPE,
141 CPTI_UNKNOWN_TYPE,
142 CPTI_INIT_LIST_TYPE,
143 CPTI_EXPLICIT_VOID_LIST,
144 CPTI_VTBL_TYPE,
145 CPTI_VTBL_PTR_TYPE,
146 CPTI_GLOBAL,
147 CPTI_ABORT_FNDECL,
148 CPTI_AGGR_TAG,
149 CPTI_CONV_OP_MARKER,
151 CPTI_CTOR_IDENTIFIER,
152 CPTI_COMPLETE_CTOR_IDENTIFIER,
153 CPTI_BASE_CTOR_IDENTIFIER,
154 CPTI_DTOR_IDENTIFIER,
155 CPTI_COMPLETE_DTOR_IDENTIFIER,
156 CPTI_BASE_DTOR_IDENTIFIER,
157 CPTI_DELETING_DTOR_IDENTIFIER,
158 CPTI_CONV_OP_IDENTIFIER,
159 CPTI_DELTA_IDENTIFIER,
160 CPTI_IN_CHARGE_IDENTIFIER,
161 CPTI_VTT_PARM_IDENTIFIER,
162 CPTI_AS_BASE_IDENTIFIER,
163 CPTI_THIS_IDENTIFIER,
164 CPTI_PFN_IDENTIFIER,
165 CPTI_VPTR_IDENTIFIER,
166 CPTI_GLOBAL_IDENTIFIER,
167 CPTI_ANON_IDENTIFIER,
168 CPTI_AUTO_IDENTIFIER,
169 CPTI_DECLTYPE_AUTO_IDENTIFIER,
170 CPTI_INIT_LIST_IDENTIFIER,
171 CPTI_FOR_RANGE__IDENTIFIER,
172 CPTI_FOR_BEGIN__IDENTIFIER,
173 CPTI_FOR_END__IDENTIFIER,
174 CPTI_FOR_RANGE_IDENTIFIER,
175 CPTI_FOR_BEGIN_IDENTIFIER,
176 CPTI_FOR_END_IDENTIFIER,
177 CPTI_ABI_TAG_IDENTIFIER,
178 CPTI_ALIGNED_IDENTIFIER,
179 CPTI_BEGIN_IDENTIFIER,
180 CPTI_END_IDENTIFIER,
181 CPTI_GET_IDENTIFIER,
182 CPTI_GNU_IDENTIFIER,
183 CPTI_TUPLE_ELEMENT_IDENTIFIER,
184 CPTI_TUPLE_SIZE_IDENTIFIER,
185 CPTI_TYPE_IDENTIFIER,
186 CPTI_VALUE_IDENTIFIER,
187 CPTI_FUN_IDENTIFIER,
188 CPTI_CLOSURE_IDENTIFIER,
189 CPTI_HEAP_UNINIT_IDENTIFIER,
190 CPTI_HEAP_IDENTIFIER,
191 CPTI_HEAP_DELETED_IDENTIFIER,
192 CPTI_HEAP_VEC_UNINIT_IDENTIFIER,
193 CPTI_HEAP_VEC_IDENTIFIER,
194 CPTI_OMP_IDENTIFIER,
196 CPTI_LANG_NAME_C,
197 CPTI_LANG_NAME_CPLUSPLUS,
199 CPTI_EMPTY_EXCEPT_SPEC,
200 CPTI_NOEXCEPT_TRUE_SPEC,
201 CPTI_NOEXCEPT_FALSE_SPEC,
202 CPTI_NOEXCEPT_DEFERRED_SPEC,
204 CPTI_ANY_TARG,
206 CPTI_MODULE_HWM,
207 /* Nodes after here change during compilation, or should not be in
208 the module's global tree table. Such nodes must be locatable
209 via name lookup or type-construction, as those are the only
210 cross-TU matching capabilities remaining. */
212 /* We must find these via the global namespace. */
213 CPTI_STD,
214 CPTI_ABI,
216 /* These are created at init time, but the library/headers provide
217 definitions. */
218 CPTI_ALIGN_TYPE,
219 CPTI_TERMINATE_FN,
220 CPTI_CALL_TERMINATE_FN,
221 CPTI_CALL_UNEXPECTED_FN,
223 /* These are lazily inited. */
224 CPTI_CONST_TYPE_INFO_TYPE,
225 CPTI_GET_EXCEPTION_PTR_FN,
226 CPTI_BEGIN_CATCH_FN,
227 CPTI_END_CATCH_FN,
228 CPTI_ALLOCATE_EXCEPTION_FN,
229 CPTI_FREE_EXCEPTION_FN,
230 CPTI_THROW_FN,
231 CPTI_RETHROW_FN,
232 CPTI_ATEXIT_FN_PTR_TYPE,
233 CPTI_ATEXIT,
234 CPTI_DSO_HANDLE,
235 CPTI_DCAST,
237 CPTI_PSEUDO_CONTRACT_VIOLATION,
239 CPTI_MAX
242 extern GTY(()) tree cp_global_trees[CPTI_MAX];
244 #define wchar_decl_node cp_global_trees[CPTI_WCHAR_DECL]
245 #define vtable_entry_type cp_global_trees[CPTI_VTABLE_ENTRY_TYPE]
246 /* The type used to represent an offset by which to adjust the `this'
247 pointer in pointer-to-member types. */
248 #define delta_type_node cp_global_trees[CPTI_DELTA_TYPE]
249 /* The type used to represent an index into the vtable. */
250 #define vtable_index_type cp_global_trees[CPTI_VTABLE_INDEX_TYPE]
252 #define class_type_node cp_global_trees[CPTI_CLASS_TYPE]
253 #define unknown_type_node cp_global_trees[CPTI_UNKNOWN_TYPE]
254 #define init_list_type_node cp_global_trees[CPTI_INIT_LIST_TYPE]
255 #define explicit_void_list_node cp_global_trees[CPTI_EXPLICIT_VOID_LIST]
256 #define vtbl_type_node cp_global_trees[CPTI_VTBL_TYPE]
257 #define vtbl_ptr_type_node cp_global_trees[CPTI_VTBL_PTR_TYPE]
258 #define std_node cp_global_trees[CPTI_STD]
259 #define abi_node cp_global_trees[CPTI_ABI]
260 #define global_namespace cp_global_trees[CPTI_GLOBAL]
261 #define const_type_info_type_node cp_global_trees[CPTI_CONST_TYPE_INFO_TYPE]
262 #define conv_op_marker cp_global_trees[CPTI_CONV_OP_MARKER]
263 #define abort_fndecl cp_global_trees[CPTI_ABORT_FNDECL]
264 #define current_aggr cp_global_trees[CPTI_AGGR_TAG]
265 /* std::align_val_t */
266 #define align_type_node cp_global_trees[CPTI_ALIGN_TYPE]
267 #define pseudo_contract_violation_type cp_global_trees[CPTI_PSEUDO_CONTRACT_VIOLATION]
269 /* We cache these tree nodes so as to call get_identifier less frequently.
270 For identifiers for functions, including special member functions such
271 as ctors and assignment operators, the nodes can be used (among other
272 things) to iterate over their overloads defined by/for a type. For
273 example:
275 tree ovlid = assign_op_identifier;
276 tree overloads = get_class_binding (type, ovlid);
277 for (ovl_iterator it (overloads); it; ++it) { ... }
279 iterates over the set of implicitly and explicitly defined overloads
280 of the assignment operator for type (including the copy and move
281 assignment operators, whether deleted or not). */
283 /* The name of a constructor that takes an in-charge parameter to
284 decide whether or not to construct virtual base classes. */
285 #define ctor_identifier cp_global_trees[CPTI_CTOR_IDENTIFIER]
286 /* The name of a constructor that constructs virtual base classes. */
287 #define complete_ctor_identifier cp_global_trees[CPTI_COMPLETE_CTOR_IDENTIFIER]
288 /* The name of a constructor that does not construct virtual base classes. */
289 #define base_ctor_identifier cp_global_trees[CPTI_BASE_CTOR_IDENTIFIER]
290 /* The name of a destructor that takes an in-charge parameter to
291 decide whether or not to destroy virtual base classes and whether
292 or not to delete the object. */
293 #define dtor_identifier cp_global_trees[CPTI_DTOR_IDENTIFIER]
294 /* The name of a destructor that destroys virtual base classes. */
295 #define complete_dtor_identifier cp_global_trees[CPTI_COMPLETE_DTOR_IDENTIFIER]
296 /* The name of a destructor that does not destroy virtual base
297 classes. */
298 #define base_dtor_identifier cp_global_trees[CPTI_BASE_DTOR_IDENTIFIER]
299 /* The name of a destructor that destroys virtual base classes, and
300 then deletes the entire object. */
301 #define deleting_dtor_identifier cp_global_trees[CPTI_DELETING_DTOR_IDENTIFIER]
303 /* The name used for conversion operators -- but note that actual
304 conversion functions use special identifiers outside the identifier
305 table. */
306 #define conv_op_identifier cp_global_trees[CPTI_CONV_OP_IDENTIFIER]
308 #define delta_identifier cp_global_trees[CPTI_DELTA_IDENTIFIER]
309 #define in_charge_identifier cp_global_trees[CPTI_IN_CHARGE_IDENTIFIER]
310 /* The name of the parameter that contains a pointer to the VTT to use
311 for this subobject constructor or destructor. */
312 #define vtt_parm_identifier cp_global_trees[CPTI_VTT_PARM_IDENTIFIER]
313 #define as_base_identifier cp_global_trees[CPTI_AS_BASE_IDENTIFIER]
314 #define this_identifier cp_global_trees[CPTI_THIS_IDENTIFIER]
315 #define pfn_identifier cp_global_trees[CPTI_PFN_IDENTIFIER]
316 #define vptr_identifier cp_global_trees[CPTI_VPTR_IDENTIFIER]
317 /* The name of the ::, std & anon namespaces. */
318 #define global_identifier cp_global_trees[CPTI_GLOBAL_IDENTIFIER]
319 #define anon_identifier cp_global_trees[CPTI_ANON_IDENTIFIER]
320 /* auto and declspec(auto) identifiers. */
321 #define auto_identifier cp_global_trees[CPTI_AUTO_IDENTIFIER]
322 #define decltype_auto_identifier cp_global_trees[CPTI_DECLTYPE_AUTO_IDENTIFIER]
323 #define init_list_identifier cp_global_trees[CPTI_INIT_LIST_IDENTIFIER]
324 #define for_range__identifier cp_global_trees[CPTI_FOR_RANGE__IDENTIFIER]
325 #define for_begin__identifier cp_global_trees[CPTI_FOR_BEGIN__IDENTIFIER]
326 #define for_end__identifier cp_global_trees[CPTI_FOR_END__IDENTIFIER]
327 #define for_range_identifier cp_global_trees[CPTI_FOR_RANGE_IDENTIFIER]
328 #define for_begin_identifier cp_global_trees[CPTI_FOR_BEGIN_IDENTIFIER]
329 #define for_end_identifier cp_global_trees[CPTI_FOR_END_IDENTIFIER]
330 #define abi_tag_identifier cp_global_trees[CPTI_ABI_TAG_IDENTIFIER]
331 #define aligned_identifier cp_global_trees[CPTI_ALIGNED_IDENTIFIER]
332 #define begin_identifier cp_global_trees[CPTI_BEGIN_IDENTIFIER]
333 #define end_identifier cp_global_trees[CPTI_END_IDENTIFIER]
334 #define get__identifier cp_global_trees[CPTI_GET_IDENTIFIER]
335 #define gnu_identifier cp_global_trees[CPTI_GNU_IDENTIFIER]
336 #define tuple_element_identifier cp_global_trees[CPTI_TUPLE_ELEMENT_IDENTIFIER]
337 #define tuple_size_identifier cp_global_trees[CPTI_TUPLE_SIZE_IDENTIFIER]
338 #define type_identifier cp_global_trees[CPTI_TYPE_IDENTIFIER]
339 #define value_identifier cp_global_trees[CPTI_VALUE_IDENTIFIER]
340 #define fun_identifier cp_global_trees[CPTI_FUN_IDENTIFIER]
341 #define closure_identifier cp_global_trees[CPTI_CLOSURE_IDENTIFIER]
342 #define heap_uninit_identifier cp_global_trees[CPTI_HEAP_UNINIT_IDENTIFIER]
343 #define heap_identifier cp_global_trees[CPTI_HEAP_IDENTIFIER]
344 #define heap_deleted_identifier cp_global_trees[CPTI_HEAP_DELETED_IDENTIFIER]
345 #define heap_vec_uninit_identifier cp_global_trees[CPTI_HEAP_VEC_UNINIT_IDENTIFIER]
346 #define heap_vec_identifier cp_global_trees[CPTI_HEAP_VEC_IDENTIFIER]
347 #define omp_identifier cp_global_trees[CPTI_OMP_IDENTIFIER]
348 #define lang_name_c cp_global_trees[CPTI_LANG_NAME_C]
349 #define lang_name_cplusplus cp_global_trees[CPTI_LANG_NAME_CPLUSPLUS]
351 /* Exception specifiers used for throw(), noexcept(true),
352 noexcept(false) and deferred noexcept. We rely on these being
353 uncloned. */
354 #define empty_except_spec cp_global_trees[CPTI_EMPTY_EXCEPT_SPEC]
355 #define noexcept_true_spec cp_global_trees[CPTI_NOEXCEPT_TRUE_SPEC]
356 #define noexcept_false_spec cp_global_trees[CPTI_NOEXCEPT_FALSE_SPEC]
357 #define noexcept_deferred_spec cp_global_trees[CPTI_NOEXCEPT_DEFERRED_SPEC]
359 /* Exception handling function declarations. */
360 #define terminate_fn cp_global_trees[CPTI_TERMINATE_FN]
361 #define call_unexpected_fn cp_global_trees[CPTI_CALL_UNEXPECTED_FN]
362 #define call_terminate_fn cp_global_trees[CPTI_CALL_TERMINATE_FN]
363 #define get_exception_ptr_fn cp_global_trees[CPTI_GET_EXCEPTION_PTR_FN]
364 #define begin_catch_fn cp_global_trees[CPTI_BEGIN_CATCH_FN]
365 #define end_catch_fn cp_global_trees[CPTI_END_CATCH_FN]
366 #define allocate_exception_fn cp_global_trees[CPTI_ALLOCATE_EXCEPTION_FN]
367 #define free_exception_fn cp_global_trees[CPTI_FREE_EXCEPTION_FN]
368 #define throw_fn cp_global_trees[CPTI_THROW_FN]
369 #define rethrow_fn cp_global_trees[CPTI_RETHROW_FN]
371 /* The type of the function-pointer argument to "__cxa_atexit" (or
372 "std::atexit", if "__cxa_atexit" is not being used). */
373 #define atexit_fn_ptr_type_node cp_global_trees[CPTI_ATEXIT_FN_PTR_TYPE]
375 /* A pointer to `std::atexit'. */
376 #define atexit_node cp_global_trees[CPTI_ATEXIT]
378 /* A pointer to `__dso_handle'. */
379 #define dso_handle_node cp_global_trees[CPTI_DSO_HANDLE]
381 /* The declaration of the dynamic_cast runtime. */
382 #define dynamic_cast_node cp_global_trees[CPTI_DCAST]
384 /* The type of a destructor. */
385 #define cleanup_type cp_global_trees[CPTI_CLEANUP_TYPE]
387 /* The type of the vtt parameter passed to subobject constructors and
388 destructors. */
389 #define vtt_parm_type cp_global_trees[CPTI_VTT_PARM_TYPE]
391 /* A node which matches any template argument. */
392 #define any_targ_node cp_global_trees[CPTI_ANY_TARG]
394 /* Node to indicate default access. This must be distinct from the
395 access nodes in tree.h. */
397 #define access_default_node null_node
399 #include "name-lookup.h"
401 /* Usage of TREE_LANG_FLAG_?:
402 0: IDENTIFIER_KIND_BIT_0 (in IDENTIFIER_NODE)
403 NEW_EXPR_USE_GLOBAL (in NEW_EXPR).
404 COND_EXPR_IS_VEC_DELETE (in COND_EXPR).
405 DELETE_EXPR_USE_GLOBAL (in DELETE_EXPR).
406 CLEANUP_P (in TRY_BLOCK)
407 AGGR_INIT_VIA_CTOR_P (in AGGR_INIT_EXPR)
408 PTRMEM_OK_P (in ADDR_EXPR, OFFSET_REF, SCOPE_REF)
409 PAREN_STRING_LITERAL_P (in STRING_CST)
410 CP_DECL_THREAD_LOCAL_P (in VAR_DECL)
411 KOENIG_LOOKUP_P (in CALL_EXPR)
412 STATEMENT_LIST_NO_SCOPE (in STATEMENT_LIST).
413 EXPR_STMT_STMT_EXPR_RESULT (in EXPR_STMT)
414 STMT_EXPR_NO_SCOPE (in STMT_EXPR)
415 BIND_EXPR_TRY_BLOCK (in BIND_EXPR)
416 TYPENAME_IS_ENUM_P (in TYPENAME_TYPE)
417 OMP_FOR_GIMPLIFYING_P (in OMP_FOR, OMP_SIMD, OMP_DISTRIBUTE,
418 and OMP_TASKLOOP)
419 BASELINK_QUALIFIED_P (in BASELINK)
420 TARGET_EXPR_IMPLICIT_P (in TARGET_EXPR)
421 TEMPLATE_PARM_PARAMETER_PACK (in TEMPLATE_PARM_INDEX)
422 ATTR_IS_DEPENDENT (in the TREE_LIST for an attribute)
423 ABI_TAG_IMPLICIT (in the TREE_LIST for the argument of abi_tag)
424 LAMBDA_CAPTURE_EXPLICIT_P (in a TREE_LIST in LAMBDA_EXPR_CAPTURE_LIST)
425 PARENTHESIZED_LIST_P (in the TREE_LIST for a parameter-declaration-list)
426 CONSTRUCTOR_IS_DIRECT_INIT (in CONSTRUCTOR)
427 LAMBDA_EXPR_CAPTURES_THIS_P (in LAMBDA_EXPR)
428 DECLTYPE_FOR_LAMBDA_CAPTURE (in DECLTYPE_TYPE)
429 VEC_INIT_EXPR_IS_CONSTEXPR (in VEC_INIT_EXPR)
430 DECL_OVERRIDE_P (in FUNCTION_DECL)
431 IMPLICIT_CONV_EXPR_DIRECT_INIT (in IMPLICIT_CONV_EXPR)
432 TRANSACTION_EXPR_IS_STMT (in TRANSACTION_EXPR)
433 CONVERT_EXPR_VBASE_PATH (in CONVERT_EXPR)
434 PACK_EXPANSION_LOCAL_P (in *_PACK_EXPANSION)
435 TINFO_HAS_ACCESS_ERRORS (in TEMPLATE_INFO)
436 SIZEOF_EXPR_TYPE_P (in SIZEOF_EXPR)
437 COMPOUND_REQ_NOEXCEPT_P (in COMPOUND_REQ)
438 WILDCARD_PACK_P (in WILDCARD_DECL)
439 BLOCK_OUTER_CURLY_BRACE_P (in BLOCK)
440 FOLD_EXPR_MODOP_P (*_FOLD_EXPR)
441 IF_STMT_CONSTEXPR_P (IF_STMT)
442 DECL_NAMESPACE_INLINE_P (in NAMESPACE_DECL)
443 SWITCH_STMT_ALL_CASES_P (in SWITCH_STMT)
444 REINTERPRET_CAST_P (in NOP_EXPR)
445 ALIGNOF_EXPR_STD_P (in ALIGNOF_EXPR)
446 OVL_DEDUP_P (in OVERLOAD)
447 INIT_EXPR_NRV_P (in INIT_EXPR)
448 ATOMIC_CONSTR_MAP_INSTANTIATED_P (in ATOMIC_CONSTR)
449 contract_semantic (in ASSERTION_, PRECONDITION_, POSTCONDITION_STMT)
450 RETURN_EXPR_LOCAL_ADDR_P (in RETURN_EXPR)
451 1: IDENTIFIER_KIND_BIT_1 (in IDENTIFIER_NODE)
452 TI_PENDING_TEMPLATE_FLAG.
453 TEMPLATE_PARMS_FOR_INLINE.
454 DELETE_EXPR_USE_VEC (in DELETE_EXPR).
455 ICS_ELLIPSIS_FLAG (in _CONV)
456 DECL_INITIALIZED_P (in VAR_DECL)
457 TYPENAME_IS_CLASS_P (in TYPENAME_TYPE)
458 STMT_IS_FULL_EXPR_P (in _STMT)
459 TARGET_EXPR_LIST_INIT_P (in TARGET_EXPR)
460 LAMBDA_EXPR_MUTABLE_P (in LAMBDA_EXPR)
461 DECL_FINAL_P (in FUNCTION_DECL)
462 QUALIFIED_NAME_IS_TEMPLATE (in SCOPE_REF)
463 CONSTRUCTOR_IS_DEPENDENT (in CONSTRUCTOR)
464 TINFO_USED_TEMPLATE_ID (in TEMPLATE_INFO)
465 PACK_EXPANSION_SIZEOF_P (in *_PACK_EXPANSION)
466 OVL_USING_P (in OVERLOAD)
467 IMPLICIT_CONV_EXPR_NONTYPE_ARG (in IMPLICIT_CONV_EXPR)
468 BASELINK_FUNCTIONS_MAYBE_INCOMPLETE_P (in BASELINK)
469 BIND_EXPR_VEC_DTOR (in BIND_EXPR)
470 ATOMIC_CONSTR_EXPR_FROM_CONCEPT_P (in ATOMIC_CONSTR)
471 2: IDENTIFIER_KIND_BIT_2 (in IDENTIFIER_NODE)
472 ICS_THIS_FLAG (in _CONV)
473 DECL_INITIALIZED_BY_CONSTANT_EXPRESSION_P (in VAR_DECL)
474 STATEMENT_LIST_TRY_BLOCK (in STATEMENT_LIST)
475 TYPENAME_IS_RESOLVING_P (in TYPENAME_TYPE)
476 TARGET_EXPR_DIRECT_INIT_P (in TARGET_EXPR)
477 FNDECL_USED_AUTO (in FUNCTION_DECL)
478 DECLTYPE_FOR_LAMBDA_PROXY (in DECLTYPE_TYPE)
479 REF_PARENTHESIZED_P (in COMPONENT_REF, INDIRECT_REF, SCOPE_REF,
480 VIEW_CONVERT_EXPR, PAREN_EXPR)
481 AGGR_INIT_ZERO_FIRST (in AGGR_INIT_EXPR)
482 CONSTRUCTOR_MUTABLE_POISON (in CONSTRUCTOR)
483 OVL_HIDDEN_P (in OVERLOAD)
484 IF_STMT_CONSTEVAL_P (in IF_STMT)
485 SWITCH_STMT_NO_BREAK_P (in SWITCH_STMT)
486 LAMBDA_EXPR_CAPTURE_OPTIMIZED (in LAMBDA_EXPR)
487 IMPLICIT_CONV_EXPR_BRACED_INIT (in IMPLICIT_CONV_EXPR)
488 PACK_EXPANSION_AUTO_P (in *_PACK_EXPANSION)
489 contract_semantic (in ASSERTION_, PRECONDITION_, POSTCONDITION_STMT)
490 3: IMPLICIT_RVALUE_P (in NON_LVALUE_EXPR or STATIC_CAST_EXPR)
491 ICS_BAD_FLAG (in _CONV)
492 FN_TRY_BLOCK_P (in TRY_BLOCK)
493 BIND_EXPR_BODY_BLOCK (in BIND_EXPR)
494 CALL_EXPR_ORDERED_ARGS (in CALL_EXPR, AGGR_INIT_EXPR)
495 DECLTYPE_FOR_REF_CAPTURE (in DECLTYPE_TYPE)
496 CONSTRUCTOR_C99_COMPOUND_LITERAL (in CONSTRUCTOR)
497 OVL_NESTED_P (in OVERLOAD)
498 DECL_MODULE_EXPORT_P (in _DECL)
499 PACK_EXPANSION_FORCE_EXTRA_ARGS_P (in *_PACK_EXPANSION)
500 LAMBDA_EXPR_STATIC_P (in LAMBDA_EXPR)
501 TARGET_EXPR_ELIDING_P (in TARGET_EXPR)
502 contract_semantic (in ASSERTION_, PRECONDITION_, POSTCONDITION_STMT)
503 4: IDENTIFIER_MARKED (IDENTIFIER_NODEs)
504 TREE_HAS_CONSTRUCTOR (in INDIRECT_REF, SAVE_EXPR, CONSTRUCTOR,
505 CALL_EXPR, or FIELD_DECL).
506 DECL_TINFO_P (in VAR_DECL, TYPE_DECL)
507 FUNCTION_REF_QUALIFIED (in FUNCTION_TYPE, METHOD_TYPE)
508 OVL_LOOKUP_P (in OVERLOAD)
509 LOOKUP_FOUND_P (in RECORD_TYPE, UNION_TYPE, ENUMERAL_TYPE, NAMESPACE_DECL)
510 FNDECL_MANIFESTLY_CONST_EVALUATED (in FUNCTION_DECL)
511 5: IDENTIFIER_VIRTUAL_P (in IDENTIFIER_NODE)
512 FUNCTION_RVALUE_QUALIFIED (in FUNCTION_TYPE, METHOD_TYPE)
513 CALL_EXPR_REVERSE_ARGS (in CALL_EXPR, AGGR_INIT_EXPR)
514 CONSTRUCTOR_PLACEHOLDER_BOUNDARY (in CONSTRUCTOR)
515 OVL_EXPORT_P (in OVERLOAD)
516 DECL_NTTP_OBJECT_P (in VAR_DECL)
517 6: TYPE_MARKED_P (in _TYPE)
518 DECL_NONTRIVIALLY_INITIALIZED_P (in VAR_DECL)
519 RANGE_FOR_IVDEP (in RANGE_FOR_STMT)
520 CALL_EXPR_OPERATOR_SYNTAX (in CALL_EXPR, AGGR_INIT_EXPR)
521 CONSTRUCTOR_IS_DESIGNATED_INIT (in CONSTRUCTOR)
523 Usage of TYPE_LANG_FLAG_?:
524 0: TYPE_DEPENDENT_P
525 1: TYPE_HAS_USER_CONSTRUCTOR.
526 2: TYPE_HAS_LATE_RETURN_TYPE (in FUNCTION_TYPE, METHOD_TYPE)
527 TYPE_PTRMEMFUNC_FLAG (in RECORD_TYPE)
528 4: TYPE_HAS_NONTRIVIAL_DESTRUCTOR
529 5: CLASS_TYPE_P (in RECORD_TYPE and UNION_TYPE)
530 ENUM_FIXED_UNDERLYING_TYPE_P (in ENUMERAL_TYPE)
531 AUTO_IS_DECLTYPE (in TEMPLATE_TYPE_PARM)
532 TEMPLATE_TEMPLATE_PARM_SIMPLE_P (in TEMPLATE_TEMPLATE_PARM)
533 6: TYPE_DEPENDENT_P_VALID
535 Usage of DECL_LANG_FLAG_?:
536 0: DECL_TEMPLATE_PARM_P (in PARM_DECL, CONST_DECL, TYPE_DECL, or TEMPLATE_DECL)
537 DECL_LOCAL_DECL_P (in FUNCTION_DECL, VAR_DECL)
538 DECL_MUTABLE_P (in FIELD_DECL)
539 DECL_DEPENDENT_P (in USING_DECL)
540 LABEL_DECL_BREAK (in LABEL_DECL)
541 1: C_TYPEDEF_EXPLICITLY_SIGNED (in TYPE_DECL).
542 DECL_TEMPLATE_INSTANTIATED (in a VAR_DECL or a FUNCTION_DECL)
543 DECL_MEMBER_TEMPLATE_P (in TEMPLATE_DECL)
544 USING_DECL_TYPENAME_P (in USING_DECL)
545 DECL_VLA_CAPTURE_P (in FIELD_DECL)
546 DECL_ARRAY_PARAMETER_P (in PARM_DECL)
547 LABEL_DECL_CONTINUE (in LABEL_DECL)
548 2: DECL_THIS_EXTERN (in VAR_DECL, FUNCTION_DECL or PARM_DECL)
549 DECL_IMPLICIT_TYPEDEF_P (in a TYPE_DECL)
550 DECL_CONSTRAINT_VAR_P (in a PARM_DECL)
551 TEMPLATE_DECL_COMPLEX_ALIAS_P (in TEMPLATE_DECL)
552 DECL_INSTANTIATING_NSDMI_P (in a FIELD_DECL)
553 USING_DECL_UNRELATED_P (in USING_DECL)
554 3: DECL_IN_AGGR_P.
555 4: DECL_C_BIT_FIELD (in a FIELD_DECL)
556 DECL_ANON_UNION_VAR_P (in a VAR_DECL)
557 DECL_SELF_REFERENCE_P (in a TYPE_DECL)
558 DECL_INVALID_OVERRIDER_P (in a FUNCTION_DECL)
559 DECL_UNINSTANIATED_TEMPLATE_FRIEND_P (in TEMPLATE_DECL)
560 5: DECL_INTERFACE_KNOWN.
561 6: DECL_THIS_STATIC (in VAR_DECL, FUNCTION_DECL or PARM_DECL)
562 DECL_FIELD_IS_BASE (in FIELD_DECL)
563 TYPE_DECL_ALIAS_P (in TYPE_DECL)
564 7: DECL_THUNK_P (in a member FUNCTION_DECL)
565 DECL_NORMAL_CAPTURE_P (in FIELD_DECL)
566 DECL_DECLARED_CONSTINIT_P (in VAR_DECL)
567 8: DECL_DECLARED_CONSTEXPR_P (in VAR_DECL, FUNCTION_DECL)
569 Usage of language-independent fields in a language-dependent manner:
571 TYPE_ALIAS_SET
572 This field is used by TYPENAME_TYPEs, TEMPLATE_TYPE_PARMs, and so
573 forth as a substitute for the mark bits provided in `lang_type'.
574 At present, only the six low-order bits are used.
576 TYPE_LANG_SLOT_1
577 For a FUNCTION_TYPE or METHOD_TYPE, this is TYPE_RAISES_EXCEPTIONS.
578 For a POINTER_TYPE (to a METHOD_TYPE), this is TYPE_PTRMEMFUNC_TYPE.
579 For an ENUMERAL_TYPE, BOUND_TEMPLATE_TEMPLATE_PARM_TYPE,
580 RECORD_TYPE or UNION_TYPE this is TYPE_TEMPLATE_INFO,
582 BINFO_VIRTUALS
583 For a binfo, this is a TREE_LIST. There is an entry for each
584 virtual function declared either in BINFO or its direct and
585 indirect primary bases.
587 The BV_DELTA of each node gives the amount by which to adjust the
588 `this' pointer when calling the function. If the method is an
589 overridden version of a base class method, then it is assumed
590 that, prior to adjustment, the this pointer points to an object
591 of the base class.
593 The BV_VCALL_INDEX of each node, if non-NULL, gives the vtable
594 index of the vcall offset for this entry.
596 The BV_FN is the declaration for the virtual function itself.
598 If BV_LOST_PRIMARY is set, it means that this entry is for a lost
599 primary virtual base and can be left null in the vtable.
601 BINFO_VTABLE
602 This is an expression with POINTER_TYPE that gives the value
603 to which the vptr should be initialized. Use get_vtbl_decl_for_binfo
604 to extract the VAR_DECL for the complete vtable.
606 DECL_VINDEX
607 This field is NULL for a non-virtual function. For a virtual
608 function, it is eventually set to an INTEGER_CST indicating the
609 index in the vtable at which this function can be found. When
610 a virtual function is declared, but before it is known what
611 function is overridden, this field is the error_mark_node.
613 Temporarily, it may be set to a TREE_LIST whose TREE_VALUE is
614 the virtual function this one overrides, and whose TREE_CHAIN is
615 the old DECL_VINDEX. */
617 /* Language-specific tree checkers. */
619 #define VAR_OR_FUNCTION_DECL_CHECK(NODE) \
620 TREE_CHECK2(NODE,VAR_DECL,FUNCTION_DECL)
622 #define TYPE_FUNCTION_OR_TEMPLATE_DECL_CHECK(NODE) \
623 TREE_CHECK3(NODE,TYPE_DECL,TEMPLATE_DECL,FUNCTION_DECL)
625 #define TYPE_FUNCTION_OR_TEMPLATE_DECL_P(NODE) \
626 (TREE_CODE (NODE) == TYPE_DECL || TREE_CODE (NODE) == TEMPLATE_DECL \
627 || TREE_CODE (NODE) == FUNCTION_DECL)
629 #define VAR_FUNCTION_OR_PARM_DECL_CHECK(NODE) \
630 TREE_CHECK3(NODE,VAR_DECL,FUNCTION_DECL,PARM_DECL)
632 #define VAR_TEMPL_TYPE_OR_FUNCTION_DECL_CHECK(NODE) \
633 TREE_CHECK4(NODE,VAR_DECL,FUNCTION_DECL,TYPE_DECL,TEMPLATE_DECL)
635 #define VAR_TEMPL_TYPE_FIELD_OR_FUNCTION_DECL_CHECK(NODE) \
636 TREE_CHECK5(NODE,VAR_DECL,FIELD_DECL,FUNCTION_DECL,TYPE_DECL,TEMPLATE_DECL)
638 #define BOUND_TEMPLATE_TEMPLATE_PARM_TYPE_CHECK(NODE) \
639 TREE_CHECK(NODE,BOUND_TEMPLATE_TEMPLATE_PARM)
641 #if defined ENABLE_TREE_CHECKING && (GCC_VERSION >= 2007)
643 /* Returns t iff the node can have a TEMPLATE_INFO field. */
645 inline tree
646 template_info_decl_check (const_tree t, const char* f, int l, const char* fn)
648 switch (TREE_CODE (t))
650 case VAR_DECL:
651 case FUNCTION_DECL:
652 case FIELD_DECL:
653 case TYPE_DECL:
654 case CONCEPT_DECL:
655 case TEMPLATE_DECL:
656 return const_cast<tree>(t);
657 default:
658 break;
660 tree_check_failed (t, f, l, fn,
661 VAR_DECL, FUNCTION_DECL, FIELD_DECL, TYPE_DECL,
662 CONCEPT_DECL, TEMPLATE_DECL, 0);
663 gcc_unreachable ();
666 #define TEMPLATE_INFO_DECL_CHECK(NODE) \
667 template_info_decl_check ((NODE), __FILE__, __LINE__, __FUNCTION__)
669 #define THUNK_FUNCTION_CHECK(NODE) __extension__ \
670 ({ __typeof (NODE) const __t = (NODE); \
671 if (TREE_CODE (__t) != FUNCTION_DECL || !__t->decl_common.lang_specific \
672 || !__t->decl_common.lang_specific->u.fn.thunk_p) \
673 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, 0); \
674 __t; })
676 #else /* ENABLE_TREE_CHECKING */
678 #define TEMPLATE_INFO_DECL_CHECK(NODE) (NODE)
679 #define THUNK_FUNCTION_CHECK(NODE) (NODE)
681 #endif /* ENABLE_TREE_CHECKING */
683 /* Language-dependent contents of an identifier. */
685 struct GTY(()) lang_identifier {
686 struct c_common_identifier c_common;
687 cxx_binding *bindings;
690 /* Return a typed pointer version of T if it designates a
691 C++ front-end identifier. */
692 inline lang_identifier*
693 identifier_p (tree t)
695 if (TREE_CODE (t) == IDENTIFIER_NODE)
696 return (lang_identifier*) t;
697 return NULL;
700 #define LANG_IDENTIFIER_CAST(NODE) \
701 ((struct lang_identifier*)IDENTIFIER_NODE_CHECK (NODE))
703 struct GTY(()) template_parm_index {
704 struct tree_common common;
705 int index;
706 int level;
707 int orig_level;
708 tree decl;
711 struct GTY(()) ptrmem_cst {
712 struct tree_common common;
713 tree member;
714 location_t locus;
716 typedef struct ptrmem_cst * ptrmem_cst_t;
718 #define CLEANUP_P(NODE) TREE_LANG_FLAG_0 (TRY_BLOCK_CHECK (NODE))
720 #define BIND_EXPR_TRY_BLOCK(NODE) \
721 TREE_LANG_FLAG_0 (BIND_EXPR_CHECK (NODE))
723 /* This BIND_EXPR is from build_vec_delete_1. */
724 #define BIND_EXPR_VEC_DTOR(NODE) \
725 TREE_LANG_FLAG_1 (BIND_EXPR_CHECK (NODE))
727 /* Used to mark the block around the member initializers and cleanups. */
728 #define BIND_EXPR_BODY_BLOCK(NODE) \
729 TREE_LANG_FLAG_3 (BIND_EXPR_CHECK (NODE))
730 #define FUNCTION_NEEDS_BODY_BLOCK(NODE) \
731 (DECL_CONSTRUCTOR_P (NODE) || DECL_DESTRUCTOR_P (NODE) \
732 || LAMBDA_FUNCTION_P (NODE))
734 #define STATEMENT_LIST_NO_SCOPE(NODE) \
735 TREE_LANG_FLAG_0 (STATEMENT_LIST_CHECK (NODE))
736 #define STATEMENT_LIST_TRY_BLOCK(NODE) \
737 TREE_LANG_FLAG_2 (STATEMENT_LIST_CHECK (NODE))
739 /* Mark the outer curly brace BLOCK. */
740 #define BLOCK_OUTER_CURLY_BRACE_P(NODE) TREE_LANG_FLAG_0 (BLOCK_CHECK (NODE))
742 /* Nonzero if this statement should be considered a full-expression,
743 i.e., if temporaries created during this statement should have
744 their destructors run at the end of this statement. */
745 #define STMT_IS_FULL_EXPR_P(NODE) TREE_LANG_FLAG_1 ((NODE))
747 /* Marks the result of a statement expression. */
748 #define EXPR_STMT_STMT_EXPR_RESULT(NODE) \
749 TREE_LANG_FLAG_0 (EXPR_STMT_CHECK (NODE))
751 /* Nonzero if this statement-expression does not have an associated scope. */
752 #define STMT_EXPR_NO_SCOPE(NODE) \
753 TREE_LANG_FLAG_0 (STMT_EXPR_CHECK (NODE))
755 #define COND_EXPR_IS_VEC_DELETE(NODE) \
756 TREE_LANG_FLAG_0 (COND_EXPR_CHECK (NODE))
758 /* Nonzero if this NOP_EXPR is a reinterpret_cast. Such conversions
759 are not constexprs. Other NOP_EXPRs are. */
760 #define REINTERPRET_CAST_P(NODE) \
761 TREE_LANG_FLAG_0 (NOP_EXPR_CHECK (NODE))
763 /* Returns nonzero iff TYPE1 and TYPE2 are the same type, in the usual
764 sense of `same'. */
765 #define same_type_p(TYPE1, TYPE2) \
766 comptypes ((TYPE1), (TYPE2), COMPARE_STRICT)
768 /* Returns nonzero iff NODE is a declaration for the global function
769 `main'. */
770 #define DECL_MAIN_ANY_P(NODE) \
771 (DECL_EXTERN_C_FUNCTION_P (NODE) \
772 && DECL_NAME (NODE) != NULL_TREE \
773 && MAIN_NAME_P (DECL_NAME (NODE)))
775 /* Nonzero iff NODE is a declaration for `int main', or we are hosted. */
776 #define DECL_MAIN_FREESTANDING_P(NODE) \
777 (DECL_MAIN_ANY_P(NODE) \
778 && (flag_hosted \
779 || TYPE_MAIN_VARIANT (TREE_TYPE (TREE_TYPE (NODE))) \
780 == integer_type_node))
782 /* Nonzero iff NODE is a declaration for `main', and we are hosted. */
783 #define DECL_MAIN_P(NODE) (DECL_MAIN_ANY_P(NODE) && flag_hosted)
785 /* Lookup walker marking. */
786 #define LOOKUP_SEEN_P(NODE) TREE_VISITED (NODE)
787 #define LOOKUP_FOUND_P(NODE) \
788 TREE_LANG_FLAG_4 (TREE_CHECK4 (NODE,RECORD_TYPE,UNION_TYPE,ENUMERAL_TYPE,\
789 NAMESPACE_DECL))
791 /* These two accessors should only be used by OVL manipulators.
792 Other users should use iterators and convenience functions. */
793 #define OVL_FUNCTION(NODE) \
794 (((struct tree_overload*)OVERLOAD_CHECK (NODE))->function)
795 #define OVL_CHAIN(NODE) \
796 (((struct tree_overload*)OVERLOAD_CHECK (NODE))->common.chain)
798 /* If set, this or a subsequent overload contains decls that need deduping. */
799 #define OVL_DEDUP_P(NODE) TREE_LANG_FLAG_0 (OVERLOAD_CHECK (NODE))
800 /* If set, this was imported in a using declaration. */
801 #define OVL_USING_P(NODE) TREE_LANG_FLAG_1 (OVERLOAD_CHECK (NODE))
802 /* If set, this overload is a hidden decl. */
803 #define OVL_HIDDEN_P(NODE) TREE_LANG_FLAG_2 (OVERLOAD_CHECK (NODE))
804 /* If set, this overload contains a nested overload. */
805 #define OVL_NESTED_P(NODE) TREE_LANG_FLAG_3 (OVERLOAD_CHECK (NODE))
806 /* If set, this overload was constructed during lookup. */
807 #define OVL_LOOKUP_P(NODE) TREE_LANG_FLAG_4 (OVERLOAD_CHECK (NODE))
808 /* If set, this OVL_USING_P overload is exported. */
809 #define OVL_EXPORT_P(NODE) TREE_LANG_FLAG_5 (OVERLOAD_CHECK (NODE))
811 /* The first decl of an overload. */
812 #define OVL_FIRST(NODE) ovl_first (NODE)
813 /* The name of the overload set. */
814 #define OVL_NAME(NODE) DECL_NAME (OVL_FIRST (NODE))
816 /* Whether this is a set of overloaded functions. TEMPLATE_DECLS are
817 always wrapped in an OVERLOAD, so we don't need to check them
818 here. */
819 #define OVL_P(NODE) \
820 (TREE_CODE (NODE) == FUNCTION_DECL || TREE_CODE (NODE) == OVERLOAD)
821 /* Whether this is a single member overload. */
822 #define OVL_SINGLE_P(NODE) \
823 (TREE_CODE (NODE) != OVERLOAD || !OVL_CHAIN (NODE))
825 /* OVL_HIDDEN_P nodes come before other nodes. */
827 struct GTY(()) tree_overload {
828 struct tree_common common;
829 tree function;
832 /* Iterator for a 1 dimensional overload. Permits iterating over the
833 outer level of a 2-d overload when explicitly enabled. */
835 class ovl_iterator {
836 tree ovl;
837 const bool allow_inner; /* Only used when checking. */
839 public:
840 explicit ovl_iterator (tree o, bool allow = false)
841 : ovl (o), allow_inner (allow)
845 public:
846 operator bool () const
848 return ovl;
850 ovl_iterator &operator++ ()
852 ovl = TREE_CODE (ovl) != OVERLOAD ? NULL_TREE : OVL_CHAIN (ovl);
853 return *this;
855 tree operator* () const
857 tree fn = TREE_CODE (ovl) != OVERLOAD ? ovl : OVL_FUNCTION (ovl);
859 /* Check this is not an unexpected 2-dimensional overload. */
860 gcc_checking_assert (allow_inner || TREE_CODE (fn) != OVERLOAD);
862 return fn;
864 bool operator== (const ovl_iterator &o) const
866 return ovl == o.ovl;
868 tree get_using () const
870 gcc_checking_assert (using_p ());
871 return ovl;
874 public:
875 /* Whether this overload was introduced by a using decl. */
876 bool using_p () const
878 return (TREE_CODE (ovl) == USING_DECL
879 || (TREE_CODE (ovl) == OVERLOAD && OVL_USING_P (ovl)));
881 /* Whether this using is being exported. */
882 bool exporting_p () const
884 return OVL_EXPORT_P (get_using ());
887 bool hidden_p () const
889 return TREE_CODE (ovl) == OVERLOAD && OVL_HIDDEN_P (ovl);
892 public:
893 tree remove_node (tree head)
895 return remove_node (head, ovl);
897 tree reveal_node (tree head)
899 return reveal_node (head, ovl);
902 protected:
903 /* If we have a nested overload, point at the inner overload and
904 return the next link on the outer one. */
905 tree maybe_push ()
907 tree r = NULL_TREE;
909 if (ovl && TREE_CODE (ovl) == OVERLOAD && OVL_NESTED_P (ovl))
911 r = OVL_CHAIN (ovl);
912 ovl = OVL_FUNCTION (ovl);
914 return r;
916 /* Restore an outer nested overload. */
917 void pop (tree outer)
919 gcc_checking_assert (!ovl);
920 ovl = outer;
923 private:
924 /* We make these static functions to avoid the address of the
925 iterator escaping the local context. */
926 static tree remove_node (tree head, tree node);
927 static tree reveal_node (tree ovl, tree node);
930 /* Treat a tree as a range of ovl_iterator, e.g.
931 for (tree f : ovl_range (fns)) { ... } */
933 class ovl_range
935 tree t;
936 bool allow;
937 public:
938 explicit ovl_range (tree t, bool allow = false): t(t), allow(allow) { }
939 ovl_iterator begin() { return ovl_iterator (t, allow); }
940 ovl_iterator end() { return ovl_iterator (NULL_TREE, allow); }
943 /* Iterator over a (potentially) 2 dimensional overload, which is
944 produced by name lookup. */
946 class lkp_iterator : public ovl_iterator {
947 typedef ovl_iterator parent;
949 tree outer;
951 public:
952 explicit lkp_iterator (tree o)
953 : parent (o, true), outer (maybe_push ())
957 public:
958 lkp_iterator &operator++ ()
960 bool repush = !outer;
962 if (!parent::operator++ () && !repush)
964 pop (outer);
965 repush = true;
968 if (repush)
969 outer = maybe_push ();
971 return *this;
975 /* Treat a tree as a range of lkp_iterator, e.g.
976 for (tree f : lkp_range (fns)) { ... } */
978 class lkp_range
980 tree t;
981 public:
982 lkp_range (tree t): t(t) { }
983 lkp_iterator begin() { return lkp_iterator (t); }
984 lkp_iterator end() { return lkp_iterator (NULL_TREE); }
987 /* hash traits for declarations. Hashes potential overload sets via
988 DECL_NAME. */
990 struct named_decl_hash : ggc_remove <tree> {
991 typedef tree value_type; /* A DECL or OVERLOAD */
992 typedef tree compare_type; /* An identifier. */
994 inline static hashval_t hash (const value_type decl);
995 inline static bool equal (const value_type existing, compare_type candidate);
997 static const bool empty_zero_p = true;
998 static inline void mark_empty (value_type &p) {p = NULL_TREE;}
999 static inline bool is_empty (value_type p) {return !p;}
1001 /* Nothing is deletable. Everything is insertable. */
1002 static bool is_deleted (value_type) { return false; }
1003 static void mark_deleted (value_type) { gcc_unreachable (); }
1006 /* Simplified unique_ptr clone to release a tree vec on exit. */
1008 class releasing_vec
1010 public:
1011 typedef vec<tree, va_gc> vec_t;
1013 releasing_vec (vec_t *v): v(v) { }
1014 releasing_vec (): v(make_tree_vector ()) { }
1016 /* Copy ops are deliberately declared but not defined,
1017 copies must always be elided. */
1018 releasing_vec (const releasing_vec &);
1019 releasing_vec &operator= (const releasing_vec &);
1021 vec_t &operator* () const { return *v; }
1022 vec_t *operator-> () const { return v; }
1023 vec_t *get() const { return v; }
1024 operator vec_t *() const { return v; }
1025 vec_t ** operator& () { return &v; }
1027 /* Breaks pointer/value consistency for convenience. This takes ptrdiff_t
1028 rather than unsigned to avoid ambiguity with the built-in operator[]
1029 (bootstrap/91828). */
1030 tree& operator[] (ptrdiff_t i) const { return (*v)[i]; }
1032 tree *begin() { return ::begin (v); }
1033 tree *end() { return ::end (v); }
1035 void release () { release_tree_vector (v); v = NULL; }
1037 ~releasing_vec () { release_tree_vector (v); }
1038 private:
1039 vec_t *v;
1041 /* Forwarding functions for vec_safe_* that might reallocate. */
1042 inline tree* vec_safe_push (releasing_vec& r, const tree &t CXX_MEM_STAT_INFO)
1043 { return vec_safe_push (*&r, t PASS_MEM_STAT); }
1044 inline bool vec_safe_reserve (releasing_vec& r, unsigned n, bool e = false CXX_MEM_STAT_INFO)
1045 { return vec_safe_reserve (*&r, n, e PASS_MEM_STAT); }
1046 inline unsigned vec_safe_length (releasing_vec &r)
1047 { return r->length(); }
1048 inline void vec_safe_splice (releasing_vec &r, vec<tree, va_gc> *p CXX_MEM_STAT_INFO)
1049 { vec_safe_splice (*&r, p PASS_MEM_STAT); }
1050 void release_tree_vector (releasing_vec &); // cause link error
1052 struct GTY(()) tree_template_decl {
1053 struct tree_decl_common common;
1054 tree arguments;
1055 tree result;
1058 /* Returns true iff NODE is a BASELINK. */
1059 #define BASELINK_P(NODE) \
1060 (TREE_CODE (NODE) == BASELINK)
1061 /* The BINFO indicating the base in which lookup found the
1062 BASELINK_FUNCTIONS. */
1063 #define BASELINK_BINFO(NODE) \
1064 (((struct tree_baselink*) BASELINK_CHECK (NODE))->binfo)
1065 /* The functions referred to by the BASELINK; either a FUNCTION_DECL,
1066 a TEMPLATE_DECL, an OVERLOAD, or a TEMPLATE_ID_EXPR. */
1067 #define BASELINK_FUNCTIONS(NODE) \
1068 (((struct tree_baselink*) BASELINK_CHECK (NODE))->functions)
1069 /* If T is a BASELINK, grab the functions, otherwise just T, which is
1070 expected to already be a (list of) functions. */
1071 #define MAYBE_BASELINK_FUNCTIONS(T) \
1072 (BASELINK_P (T) ? BASELINK_FUNCTIONS (T) : T)
1073 /* The BINFO in which the search for the functions indicated by this baselink
1074 began. This base is used to determine the accessibility of functions
1075 selected by overload resolution. */
1076 #define BASELINK_ACCESS_BINFO(NODE) \
1077 (((struct tree_baselink*) BASELINK_CHECK (NODE))->access_binfo)
1078 /* For a type-conversion operator, the BASELINK_OPTYPE indicates the type
1079 to which the conversion should occur. This value is important if
1080 the BASELINK_FUNCTIONS include a template conversion operator --
1081 the BASELINK_OPTYPE can be used to determine what type the user
1082 requested. */
1083 #define BASELINK_OPTYPE(NODE) \
1084 (TREE_CHAIN (BASELINK_CHECK (NODE)))
1085 /* Nonzero if this baselink was from a qualified lookup. */
1086 #define BASELINK_QUALIFIED_P(NODE) \
1087 TREE_LANG_FLAG_0 (BASELINK_CHECK (NODE))
1088 /* Nonzero if the overload set for this baselink might be incomplete due
1089 to the lookup being performed from an incomplete-class context. */
1090 #define BASELINK_FUNCTIONS_MAYBE_INCOMPLETE_P(NODE) \
1091 TREE_LANG_FLAG_1 (BASELINK_CHECK (NODE))
1093 struct GTY(()) tree_baselink {
1094 struct tree_common common;
1095 tree binfo;
1096 tree functions;
1097 tree access_binfo;
1100 /* The different kinds of ids that we encounter. */
1102 enum cp_id_kind
1104 /* Not an id at all. */
1105 CP_ID_KIND_NONE,
1106 /* An unqualified-id that is not a template-id. */
1107 CP_ID_KIND_UNQUALIFIED,
1108 /* An unqualified-id that is a dependent name. */
1109 CP_ID_KIND_UNQUALIFIED_DEPENDENT,
1110 /* An unqualified template-id. */
1111 CP_ID_KIND_TEMPLATE_ID,
1112 /* A qualified-id. */
1113 CP_ID_KIND_QUALIFIED
1117 /* The various kinds of C++0x warnings we encounter. */
1119 enum cpp0x_warn_str
1121 /* extended initializer lists */
1122 CPP0X_INITIALIZER_LISTS,
1123 /* explicit conversion operators */
1124 CPP0X_EXPLICIT_CONVERSION,
1125 /* variadic templates */
1126 CPP0X_VARIADIC_TEMPLATES,
1127 /* lambda expressions */
1128 CPP0X_LAMBDA_EXPR,
1129 /* C++0x auto */
1130 CPP0X_AUTO,
1131 /* scoped enums */
1132 CPP0X_SCOPED_ENUMS,
1133 /* defaulted and deleted functions */
1134 CPP0X_DEFAULTED_DELETED,
1135 /* inline namespaces */
1136 CPP0X_INLINE_NAMESPACES,
1137 /* override controls, override/final */
1138 CPP0X_OVERRIDE_CONTROLS,
1139 /* non-static data member initializers */
1140 CPP0X_NSDMI,
1141 /* user defined literals */
1142 CPP0X_USER_DEFINED_LITERALS,
1143 /* delegating constructors */
1144 CPP0X_DELEGATING_CTORS,
1145 /* inheriting constructors */
1146 CPP0X_INHERITING_CTORS,
1147 /* C++11 attributes */
1148 CPP0X_ATTRIBUTES,
1149 /* ref-qualified member functions */
1150 CPP0X_REF_QUALIFIER
1153 /* The various kinds of operation used by composite_pointer_type. */
1155 enum composite_pointer_operation
1157 /* comparison */
1158 CPO_COMPARISON,
1159 /* conversion */
1160 CPO_CONVERSION,
1161 /* conditional expression */
1162 CPO_CONDITIONAL_EXPR
1165 /* Possible cases of expression list used by build_x_compound_expr_from_list. */
1166 enum expr_list_kind {
1167 ELK_INIT, /* initializer */
1168 ELK_MEM_INIT, /* member initializer */
1169 ELK_FUNC_CAST /* functional cast */
1172 /* Possible cases of implicit bad rhs conversions. */
1173 enum impl_conv_rhs {
1174 ICR_DEFAULT_ARGUMENT, /* default argument */
1175 ICR_CONVERTING, /* converting */
1176 ICR_INIT, /* initialization */
1177 ICR_ARGPASS, /* argument passing */
1178 ICR_RETURN, /* return */
1179 ICR_ASSIGN /* assignment */
1182 /* Possible cases of implicit or explicit bad conversions to void. */
1183 enum impl_conv_void {
1184 ICV_CAST, /* (explicit) conversion to void */
1185 ICV_SECOND_OF_COND, /* second operand of conditional expression */
1186 ICV_THIRD_OF_COND, /* third operand of conditional expression */
1187 ICV_RIGHT_OF_COMMA, /* right operand of comma operator */
1188 ICV_LEFT_OF_COMMA, /* left operand of comma operator */
1189 ICV_STATEMENT, /* statement */
1190 ICV_THIRD_IN_FOR /* for increment expression */
1193 /* Possible invalid uses of an abstract class that might not have a
1194 specific associated declaration. */
1195 enum GTY(()) abstract_class_use {
1196 ACU_UNKNOWN, /* unknown or decl provided */
1197 ACU_CAST, /* cast to abstract class */
1198 ACU_NEW, /* new-expression of abstract class */
1199 ACU_THROW, /* throw-expression of abstract class */
1200 ACU_CATCH, /* catch-parameter of abstract class */
1201 ACU_ARRAY, /* array of abstract class */
1202 ACU_RETURN, /* return type of abstract class */
1203 ACU_PARM /* parameter type of abstract class */
1206 /* Macros for access to language-specific slots in an identifier. */
1208 /* Identifiers map directly to block or class-scope bindings.
1209 Namespace-scope bindings are held in hash tables on the respective
1210 namespaces. The identifier bindings are the innermost active
1211 binding, from whence you can get the decl and/or implicit-typedef
1212 of an elaborated type. When not bound to a local entity the
1213 values are NULL. */
1214 #define IDENTIFIER_BINDING(NODE) \
1215 (LANG_IDENTIFIER_CAST (NODE)->bindings)
1216 #define REAL_IDENTIFIER_TYPE_VALUE(NODE) TREE_TYPE (NODE)
1217 #define SET_IDENTIFIER_TYPE_VALUE(NODE,TYPE) (TREE_TYPE (NODE) = (TYPE))
1219 /* Kinds of identifiers. Values are carefully chosen. */
1220 enum cp_identifier_kind {
1221 cik_normal = 0, /* Not a special identifier. */
1222 cik_keyword = 1, /* A keyword. */
1223 cik_ctor = 2, /* Constructor (in-chg, complete or base). */
1224 cik_dtor = 3, /* Destructor (in-chg, deleting, complete or
1225 base). */
1226 cik_simple_op = 4, /* Non-assignment operator name. */
1227 cik_assign_op = 5, /* An assignment operator name. */
1228 cik_conv_op = 6, /* Conversion operator name. */
1229 cik_reserved_for_udlit = 7, /* Not yet in use */
1230 cik_max
1233 /* Kind bits. */
1234 #define IDENTIFIER_KIND_BIT_0(NODE) \
1235 TREE_LANG_FLAG_0 (IDENTIFIER_NODE_CHECK (NODE))
1236 #define IDENTIFIER_KIND_BIT_1(NODE) \
1237 TREE_LANG_FLAG_1 (IDENTIFIER_NODE_CHECK (NODE))
1238 #define IDENTIFIER_KIND_BIT_2(NODE) \
1239 TREE_LANG_FLAG_2 (IDENTIFIER_NODE_CHECK (NODE))
1241 /* Used by various search routines. */
1242 #define IDENTIFIER_MARKED(NODE) \
1243 TREE_LANG_FLAG_4 (IDENTIFIER_NODE_CHECK (NODE))
1245 /* Nonzero if this identifier is used as a virtual function name somewhere
1246 (optimizes searches). */
1247 #define IDENTIFIER_VIRTUAL_P(NODE) \
1248 TREE_LANG_FLAG_5 (IDENTIFIER_NODE_CHECK (NODE))
1250 /* True if this identifier is a reserved word. C_RID_CODE (node) is
1251 then the RID_* value of the keyword. Value 1. */
1252 #define IDENTIFIER_KEYWORD_P(NODE) \
1253 ((!IDENTIFIER_KIND_BIT_2 (NODE)) \
1254 & (!IDENTIFIER_KIND_BIT_1 (NODE)) \
1255 & IDENTIFIER_KIND_BIT_0 (NODE))
1257 /* True if this identifier is the name of a constructor or
1258 destructor. Value 2 or 3. */
1259 #define IDENTIFIER_CDTOR_P(NODE) \
1260 ((!IDENTIFIER_KIND_BIT_2 (NODE)) \
1261 & IDENTIFIER_KIND_BIT_1 (NODE))
1263 /* True if this identifier is the name of a constructor. Value 2. */
1264 #define IDENTIFIER_CTOR_P(NODE) \
1265 (IDENTIFIER_CDTOR_P(NODE) \
1266 & (!IDENTIFIER_KIND_BIT_0 (NODE)))
1268 /* True if this identifier is the name of a destructor. Value 3. */
1269 #define IDENTIFIER_DTOR_P(NODE) \
1270 (IDENTIFIER_CDTOR_P(NODE) \
1271 & IDENTIFIER_KIND_BIT_0 (NODE))
1273 /* True if this identifier is for any operator name (including
1274 conversions). Value 4, 5, 6 or 7. */
1275 #define IDENTIFIER_ANY_OP_P(NODE) \
1276 (IDENTIFIER_KIND_BIT_2 (NODE))
1278 /* True if this identifier is for an overloaded operator. Values 4, 5. */
1279 #define IDENTIFIER_OVL_OP_P(NODE) \
1280 (IDENTIFIER_ANY_OP_P (NODE) \
1281 & (!IDENTIFIER_KIND_BIT_1 (NODE)))
1283 /* True if this identifier is for any assignment. Values 5. */
1284 #define IDENTIFIER_ASSIGN_OP_P(NODE) \
1285 (IDENTIFIER_OVL_OP_P (NODE) \
1286 & IDENTIFIER_KIND_BIT_0 (NODE))
1288 /* True if this identifier is the name of a type-conversion
1289 operator. Value 7. */
1290 #define IDENTIFIER_CONV_OP_P(NODE) \
1291 (IDENTIFIER_ANY_OP_P (NODE) \
1292 & IDENTIFIER_KIND_BIT_1 (NODE) \
1293 & (!IDENTIFIER_KIND_BIT_0 (NODE)))
1295 /* True if this identifier is a new or delete operator. */
1296 #define IDENTIFIER_NEWDEL_OP_P(NODE) \
1297 (IDENTIFIER_OVL_OP_P (NODE) \
1298 && IDENTIFIER_OVL_OP_FLAGS (NODE) & OVL_OP_FLAG_ALLOC)
1300 /* True if this identifier is a new operator. */
1301 #define IDENTIFIER_NEW_OP_P(NODE) \
1302 (IDENTIFIER_OVL_OP_P (NODE) \
1303 && (IDENTIFIER_OVL_OP_FLAGS (NODE) \
1304 & (OVL_OP_FLAG_ALLOC | OVL_OP_FLAG_DELETE)) == OVL_OP_FLAG_ALLOC)
1306 /* Access a C++-specific index for identifier NODE.
1307 Used to optimize operator mappings etc. */
1308 #define IDENTIFIER_CP_INDEX(NODE) \
1309 (IDENTIFIER_NODE_CHECK(NODE)->base.u.bits.address_space)
1311 /* In a RECORD_TYPE or UNION_TYPE, nonzero if any component is read-only. */
1312 #define C_TYPE_FIELDS_READONLY(TYPE) \
1313 (LANG_TYPE_CLASS_CHECK (TYPE)->fields_readonly)
1315 /* The tokens stored in the unparsed operand. */
1317 #define DEFPARSE_TOKENS(NODE) \
1318 (((struct tree_deferred_parse *)DEFERRED_PARSE_CHECK (NODE))->tokens)
1319 #define DEFPARSE_INSTANTIATIONS(NODE) \
1320 (((struct tree_deferred_parse *)DEFERRED_PARSE_CHECK (NODE))->instantiations)
1322 struct GTY (()) tree_deferred_parse {
1323 struct tree_base base;
1324 struct cp_token_cache *tokens;
1325 vec<tree, va_gc> *instantiations;
1329 #define DEFERRED_NOEXCEPT_PATTERN(NODE) \
1330 (((struct tree_deferred_noexcept *)DEFERRED_NOEXCEPT_CHECK (NODE))->pattern)
1331 #define DEFERRED_NOEXCEPT_ARGS(NODE) \
1332 (((struct tree_deferred_noexcept *)DEFERRED_NOEXCEPT_CHECK (NODE))->args)
1333 #define DEFERRED_NOEXCEPT_SPEC_P(NODE) \
1334 ((NODE) && (TREE_PURPOSE (NODE)) \
1335 && (TREE_CODE (TREE_PURPOSE (NODE)) == DEFERRED_NOEXCEPT))
1336 #define UNEVALUATED_NOEXCEPT_SPEC_P(NODE) \
1337 (DEFERRED_NOEXCEPT_SPEC_P (NODE) \
1338 && DEFERRED_NOEXCEPT_PATTERN (TREE_PURPOSE (NODE)) == NULL_TREE)
1339 #define UNPARSED_NOEXCEPT_SPEC_P(NODE) \
1340 ((NODE) && (TREE_PURPOSE (NODE)) \
1341 && (TREE_CODE (TREE_PURPOSE (NODE)) == DEFERRED_PARSE))
1343 struct GTY (()) tree_deferred_noexcept {
1344 struct tree_base base;
1345 tree pattern;
1346 tree args;
1350 /* The condition associated with the static assertion. This must be
1351 an integral constant expression. */
1352 #define STATIC_ASSERT_CONDITION(NODE) \
1353 (((struct tree_static_assert *)STATIC_ASSERT_CHECK (NODE))->condition)
1355 /* The message associated with the static assertion. This must be a
1356 string constant, which will be emitted as an error message when the
1357 static assert condition is false. */
1358 #define STATIC_ASSERT_MESSAGE(NODE) \
1359 (((struct tree_static_assert *)STATIC_ASSERT_CHECK (NODE))->message)
1361 /* Source location information for a static assertion. */
1362 #define STATIC_ASSERT_SOURCE_LOCATION(NODE) \
1363 (((struct tree_static_assert *)STATIC_ASSERT_CHECK (NODE))->location)
1365 struct GTY (()) tree_static_assert {
1366 struct tree_common common;
1367 tree condition;
1368 tree message;
1369 location_t location;
1372 struct GTY (()) tree_argument_pack_select {
1373 struct tree_common common;
1374 tree argument_pack;
1375 int index;
1378 /* The different kinds of traits that we encounter. */
1380 enum cp_trait_kind
1382 #define DEFTRAIT(TCC, CODE, NAME, ARITY) \
1383 CPTK_##CODE,
1384 #include "cp-trait.def"
1385 #undef DEFTRAIT
1388 /* The types that we are processing. */
1389 #define TRAIT_EXPR_TYPE1(NODE) \
1390 (((struct tree_trait_expr *)TRAIT_EXPR_CHECK (NODE))->type1)
1392 #define TRAIT_EXPR_TYPE2(NODE) \
1393 (((struct tree_trait_expr *)TRAIT_EXPR_CHECK (NODE))->type2)
1395 /* The specific trait that we are processing. */
1396 #define TRAIT_EXPR_KIND(NODE) \
1397 (((struct tree_trait_expr *)TRAIT_EXPR_CHECK (NODE))->kind)
1399 #define TRAIT_EXPR_LOCATION(NODE) \
1400 (((struct tree_trait_expr *)TRAIT_EXPR_CHECK (NODE))->locus)
1402 struct GTY (()) tree_trait_expr {
1403 struct tree_common common;
1404 tree type1;
1405 tree type2;
1406 location_t locus;
1407 enum cp_trait_kind kind;
1410 /* An INTEGER_CST containing the kind of the trait type NODE. */
1411 #define TRAIT_TYPE_KIND_RAW(NODE) \
1412 TYPE_VALUES_RAW (TRAIT_TYPE_CHECK (NODE))
1414 /* The kind of the trait type NODE. */
1415 #define TRAIT_TYPE_KIND(NODE) \
1416 ((enum cp_trait_kind) TREE_INT_CST_LOW (TRAIT_TYPE_KIND_RAW (NODE)))
1418 /* The first argument of the trait type NODE. */
1419 #define TRAIT_TYPE_TYPE1(NODE) \
1420 TYPE_MIN_VALUE_RAW (TRAIT_TYPE_CHECK (NODE))
1422 /* The rest of the arguments of the trait type NODE. */
1423 #define TRAIT_TYPE_TYPE2(NODE) \
1424 TYPE_MAX_VALUE_RAW (TRAIT_TYPE_CHECK (NODE))
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)
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)))
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)))
1444 enum cp_lambda_default_capture_mode_type {
1445 CPLD_NONE,
1446 CPLD_COPY,
1447 CPLD_REFERENCE
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)
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)
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)
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)
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))
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))
1481 /* Predicate tracking whether the lambda was declared 'static'. */
1482 #define LAMBDA_EXPR_STATIC_P(NODE) \
1483 TREE_LANG_FLAG_3 (LAMBDA_EXPR_CHECK (NODE))
1485 /* True if this TREE_LIST in LAMBDA_EXPR_CAPTURE_LIST is for an explicit
1486 capture. */
1487 #define LAMBDA_CAPTURE_EXPLICIT_P(NODE) \
1488 TREE_LANG_FLAG_0 (TREE_LIST_CHECK (NODE))
1490 /* The source location of the lambda. */
1491 #define LAMBDA_EXPR_LOCATION(NODE) \
1492 (((struct tree_lambda_expr *)LAMBDA_EXPR_CHECK (NODE))->locus)
1494 /* The mangling scope for the lambda: FUNCTION_DECL, PARM_DECL, VAR_DECL,
1495 FIELD_DECL or NULL_TREE. If this is NULL_TREE, we have no linkage. */
1496 #define LAMBDA_EXPR_EXTRA_SCOPE(NODE) \
1497 (((struct tree_lambda_expr *)LAMBDA_EXPR_CHECK (NODE))->extra_scope)
1499 /* Lambdas in the same extra scope might need a discriminating count.
1500 For ABI 17, we have single per-scope count, for ABI 18, we have
1501 per-scope, per-signature numbering. */
1502 #define LAMBDA_EXPR_SCOPE_ONLY_DISCRIMINATOR(NODE) \
1503 (((struct tree_lambda_expr *)LAMBDA_EXPR_CHECK (NODE))->discriminator_scope)
1504 #define LAMBDA_EXPR_SCOPE_SIG_DISCRIMINATOR(NODE) \
1505 (((struct tree_lambda_expr *)LAMBDA_EXPR_CHECK (NODE))->discriminator_sig)
1507 /* During parsing of the lambda, a vector of capture proxies which need
1508 to be pushed once we're done processing a nested lambda. */
1509 #define LAMBDA_EXPR_PENDING_PROXIES(NODE) \
1510 (((struct tree_lambda_expr *)LAMBDA_EXPR_CHECK (NODE))->pending_proxies)
1512 /* If NODE was regenerated via tsubst_lambda_expr, this is a TEMPLATE_INFO
1513 whose TI_TEMPLATE is the immediate LAMBDA_EXPR from which NODE was
1514 regenerated, and TI_ARGS is the full set of template arguments used
1515 to regenerate NODE from the most general lambda. */
1516 #define LAMBDA_EXPR_REGEN_INFO(NODE) \
1517 (((struct tree_lambda_expr *)LAMBDA_EXPR_CHECK (NODE))->regen_info)
1519 /* The closure type of the lambda, which is also the type of the
1520 LAMBDA_EXPR. */
1521 #define LAMBDA_EXPR_CLOSURE(NODE) \
1522 (TREE_TYPE (LAMBDA_EXPR_CHECK (NODE)))
1524 struct GTY (()) tree_lambda_expr
1526 struct tree_typed typed;
1527 tree capture_list;
1528 tree this_capture;
1529 tree extra_scope;
1530 tree regen_info;
1531 vec<tree, va_gc> *pending_proxies;
1532 location_t locus;
1533 enum cp_lambda_default_capture_mode_type default_capture_mode : 2;
1534 unsigned discriminator_scope : 15; // Per-scope discriminator
1535 unsigned discriminator_sig : 15; // Per-scope, per-signature discriminator
1538 /* Non-zero if this template specialization has access violations that
1539 should be rechecked when the function is instantiated outside argument
1540 deduction. */
1541 #define TINFO_HAS_ACCESS_ERRORS(NODE) \
1542 (TREE_LANG_FLAG_0 (TEMPLATE_INFO_CHECK (NODE)))
1543 #define FNDECL_HAS_ACCESS_ERRORS(NODE) \
1544 (TINFO_HAS_ACCESS_ERRORS (DECL_TEMPLATE_INFO (NODE)))
1546 /* Non-zero if this variable template specialization was specified using a
1547 template-id, so it's a partial or full specialization and not a definition
1548 of the member template of a particular class specialization. */
1549 #define TINFO_USED_TEMPLATE_ID(NODE) \
1550 (TREE_LANG_FLAG_1 (TEMPLATE_INFO_CHECK (NODE)))
1552 /* The representation of a deferred access check. */
1554 struct GTY(()) deferred_access_check {
1555 /* The base class in which the declaration is referenced. */
1556 tree binfo;
1557 /* The declaration whose access must be checked. */
1558 tree decl;
1559 /* The declaration that should be used in the error message. */
1560 tree diag_decl;
1561 /* The location of this access. */
1562 location_t loc;
1565 struct GTY(()) tree_template_info {
1566 struct tree_base base;
1567 tree tmpl;
1568 tree args;
1569 tree partial;
1570 vec<deferred_access_check, va_gc> *deferred_access_checks;
1573 // Constraint information for a C++ declaration. Constraint information is
1574 // comprised of:
1576 // - a constraint expression introduced by the template header
1577 // - a constraint expression introduced by a function declarator
1578 // - the associated constraints, which are the conjunction of those,
1579 // and used for declaration matching
1581 // The template and declarator requirements are kept to support pretty
1582 // printing constrained declarations.
1583 struct GTY(()) tree_constraint_info {
1584 struct tree_base base;
1585 tree template_reqs;
1586 tree declarator_reqs;
1587 tree associated_constr;
1590 // Require that pointer P is non-null before returning.
1591 template<typename T>
1592 inline T*
1593 check_nonnull (T* p)
1595 gcc_assert (p);
1596 return p;
1599 /* Returns true iff T is non-null and represents constraint info. */
1600 inline tree_constraint_info *
1601 check_constraint_info (tree t)
1603 if (t && TREE_CODE (t) == CONSTRAINT_INFO)
1604 return (tree_constraint_info *)t;
1605 return NULL;
1608 /* Access the expression describing the template constraints. This may be
1609 null if no constraints were introduced in the template parameter list,
1610 a requirements clause after the template parameter list, or constraints
1611 through a constrained-type-specifier. */
1612 #define CI_TEMPLATE_REQS(NODE) \
1613 check_constraint_info (check_nonnull (NODE))->template_reqs
1615 /* Access the expression describing the trailing constraints. This is non-null
1616 for any implicit instantiation of a constrained declaration. For a
1617 templated declaration it is non-null only when a trailing requires-clause
1618 was specified. */
1619 #define CI_DECLARATOR_REQS(NODE) \
1620 check_constraint_info (check_nonnull (NODE))->declarator_reqs
1622 /* The computed associated constraint expression for a declaration. */
1623 #define CI_ASSOCIATED_CONSTRAINTS(NODE) \
1624 check_constraint_info (check_nonnull (NODE))->associated_constr
1626 /* Access the constraint-expression introduced by the requires-clause
1627 associate the template parameter list NODE. */
1628 #define TEMPLATE_PARMS_CONSTRAINTS(NODE) \
1629 TREE_TYPE (TREE_LIST_CHECK (NODE))
1631 /* Access the logical constraints on the template parameter declaration
1632 indicated by NODE. */
1633 #define TEMPLATE_PARM_CONSTRAINTS(NODE) \
1634 TREE_TYPE (TREE_LIST_CHECK (NODE))
1636 /* Non-zero if the noexcept is present in a compound requirement. */
1637 #define COMPOUND_REQ_NOEXCEPT_P(NODE) \
1638 TREE_LANG_FLAG_0 (TREE_CHECK (NODE, COMPOUND_REQ))
1640 /* A TREE_LIST whose TREE_VALUE is the constraints on the 'auto' placeholder
1641 type NODE, used in an argument deduction constraint. The TREE_PURPOSE
1642 holds the set of template parameters that were in-scope when this 'auto'
1643 was formed. */
1644 #define PLACEHOLDER_TYPE_CONSTRAINTS_INFO(NODE) \
1645 DECL_SIZE_UNIT (TYPE_NAME (TEMPLATE_TYPE_PARM_CHECK (NODE)))
1647 /* The constraints on the 'auto' placeholder type NODE. */
1648 #define PLACEHOLDER_TYPE_CONSTRAINTS(NODE) \
1649 (PLACEHOLDER_TYPE_CONSTRAINTS_INFO (NODE) \
1650 ? TREE_VALUE (PLACEHOLDER_TYPE_CONSTRAINTS_INFO (NODE)) \
1651 : NULL_TREE)
1653 /* True if NODE is a constraint. */
1654 #define CONSTR_P(NODE) \
1655 (TREE_CODE (NODE) == ATOMIC_CONSTR \
1656 || TREE_CODE (NODE) == CONJ_CONSTR \
1657 || TREE_CODE (NODE) == DISJ_CONSTR)
1659 /* Valid for any normalized constraint. */
1660 #define CONSTR_CHECK(NODE) \
1661 TREE_CHECK3 (NODE, ATOMIC_CONSTR, CONJ_CONSTR, DISJ_CONSTR)
1663 /* The CONSTR_INFO stores normalization data for a constraint. It refers to
1664 the original expression and the expression or declaration
1665 from which the constraint was normalized.
1667 This is TREE_LIST whose TREE_PURPOSE is the original expression and whose
1668 TREE_VALUE is a list of contexts. */
1669 #define CONSTR_INFO(NODE) \
1670 TREE_TYPE (CONSTR_CHECK (NODE))
1672 /* The expression evaluated by the constraint. */
1673 #define CONSTR_EXPR(NODE) \
1674 TREE_PURPOSE (CONSTR_INFO (NODE))
1676 /* The expression or declaration from which this constraint was normalized.
1677 This is a TREE_LIST whose TREE_VALUE is either a template-id expression
1678 denoting a concept check or the declaration introducing the constraint.
1679 These are chained to other context objects. */
1680 #define CONSTR_CONTEXT(NODE) \
1681 TREE_VALUE (CONSTR_INFO (NODE))
1683 /* The parameter mapping for an atomic constraint. */
1684 #define ATOMIC_CONSTR_MAP(NODE) \
1685 TREE_OPERAND (TREE_CHECK (NODE, ATOMIC_CONSTR), 0)
1687 /* Whether the parameter mapping of this atomic constraint
1688 is already instantiated with concrete template arguments.
1689 Used only in satisfy_atom and in the satisfaction cache. */
1690 #define ATOMIC_CONSTR_MAP_INSTANTIATED_P(NODE) \
1691 TREE_LANG_FLAG_0 (ATOMIC_CONSTR_CHECK (NODE))
1693 /* Whether the expression for this atomic constraint belongs to a
1694 concept definition. */
1695 #define ATOMIC_CONSTR_EXPR_FROM_CONCEPT_P(NODE) \
1696 TREE_LANG_FLAG_1 (ATOMIC_CONSTR_CHECK (NODE))
1698 /* The expression of an atomic constraint. */
1699 #define ATOMIC_CONSTR_EXPR(NODE) \
1700 CONSTR_EXPR (ATOMIC_CONSTR_CHECK (NODE))
1702 /* The concept of a concept check. */
1703 #define CHECK_CONSTR_CONCEPT(NODE) \
1704 TREE_OPERAND (TREE_CHECK (NODE, CHECK_CONSTR), 0)
1706 /* The template arguments of a concept check. */
1707 #define CHECK_CONSTR_ARGS(NODE) \
1708 TREE_OPERAND (TREE_CHECK (NODE, CHECK_CONSTR), 1)
1710 /* Whether a PARM_DECL represents a local parameter in a
1711 requires-expression. */
1712 #define CONSTRAINT_VAR_P(NODE) \
1713 DECL_LANG_FLAG_2 (TREE_CHECK (NODE, PARM_DECL))
1715 /* The concept constraining this constrained template-parameter. */
1716 #define CONSTRAINED_PARM_CONCEPT(NODE) \
1717 DECL_SIZE_UNIT (TYPE_DECL_CHECK (NODE))
1718 /* Any extra template arguments specified for a constrained
1719 template-parameter. */
1720 #define CONSTRAINED_PARM_EXTRA_ARGS(NODE) \
1721 DECL_SIZE (TYPE_DECL_CHECK (NODE))
1722 /* The first template parameter of CONSTRAINED_PARM_CONCEPT to be used as a
1723 prototype for the constrained parameter in finish_shorthand_constraint,
1724 attached for convenience. */
1725 #define CONSTRAINED_PARM_PROTOTYPE(NODE) \
1726 DECL_INITIAL (TYPE_DECL_CHECK (NODE))
1728 /* Module flags on FUNCTION,VAR,TYPE,CONCEPT or NAMESPACE
1729 A TEMPLATE_DECL holds them on the DECL_TEMPLATE_RESULT object --
1730 it's just not practical to keep them consistent. */
1731 #define DECL_MODULE_CHECK(NODE) \
1732 TREE_NOT_CHECK (NODE, TEMPLATE_DECL)
1734 /* In the purview of a named module (or in the purview of the
1735 header-unit being compiled). */
1736 #define DECL_MODULE_PURVIEW_P(N) \
1737 (DECL_LANG_SPECIFIC (DECL_MODULE_CHECK (N))->u.base.module_purview_p)
1739 /* Attached to the named module it is in the purview of. Decls
1740 attached to the global module will have this false. */
1741 #define DECL_MODULE_ATTACH_P(N) \
1742 (DECL_LANG_SPECIFIC (DECL_MODULE_CHECK (N))->u.base.module_attach_p)
1744 /* True if the live version of the decl was imported. */
1745 #define DECL_MODULE_IMPORT_P(NODE) \
1746 (DECL_LANG_SPECIFIC (DECL_MODULE_CHECK (NODE))->u.base.module_import_p)
1748 /* True if this decl is in the entity hash & array. This means that
1749 some variant was imported, even if DECL_MODULE_IMPORT_P is false. */
1750 #define DECL_MODULE_ENTITY_P(NODE) \
1751 (DECL_LANG_SPECIFIC (DECL_MODULE_CHECK (NODE))->u.base.module_entity_p)
1753 /* DECL that has attached decls for ODR-relatedness. */
1754 #define DECL_MODULE_KEYED_DECLS_P(NODE) \
1755 (DECL_LANG_SPECIFIC (TREE_CHECK2(NODE,FUNCTION_DECL,VAR_DECL))\
1756 ->u.base.module_keyed_decls_p)
1758 /* Whether this is an exported DECL. Held on any decl that can appear
1759 at namespace scope (function, var, type, template, const or
1760 namespace). templates copy from their template_result, consts have
1761 it for unscoped enums. */
1762 #define DECL_MODULE_EXPORT_P(NODE) TREE_LANG_FLAG_3 (NODE)
1765 /* The list of local parameters introduced by this requires-expression,
1766 in the form of a chain of PARM_DECLs. */
1767 #define REQUIRES_EXPR_PARMS(NODE) \
1768 TREE_OPERAND (TREE_CHECK (NODE, REQUIRES_EXPR), 0)
1770 /* A TREE_LIST of the requirements for this requires-expression.
1771 The requirements are stored in lexical order within the TREE_VALUE
1772 of each TREE_LIST node. The TREE_PURPOSE of each node is unused. */
1773 #define REQUIRES_EXPR_REQS(NODE) \
1774 TREE_OPERAND (TREE_CHECK (NODE, REQUIRES_EXPR), 1)
1776 /* Like PACK_EXPANSION_EXTRA_ARGS, for requires-expressions. */
1777 #define REQUIRES_EXPR_EXTRA_ARGS(NODE) \
1778 TREE_OPERAND (TREE_CHECK (NODE, REQUIRES_EXPR), 2)
1780 enum cp_tree_node_structure_enum {
1781 TS_CP_GENERIC,
1782 TS_CP_IDENTIFIER,
1783 TS_CP_TPI,
1784 TS_CP_PTRMEM,
1785 TS_CP_OVERLOAD,
1786 TS_CP_BINDING_VECTOR,
1787 TS_CP_BASELINK,
1788 TS_CP_TEMPLATE_DECL,
1789 TS_CP_DEFERRED_PARSE,
1790 TS_CP_DEFERRED_NOEXCEPT,
1791 TS_CP_STATIC_ASSERT,
1792 TS_CP_ARGUMENT_PACK_SELECT,
1793 TS_CP_TRAIT_EXPR,
1794 TS_CP_LAMBDA_EXPR,
1795 TS_CP_TEMPLATE_INFO,
1796 TS_CP_CONSTRAINT_INFO,
1797 TS_CP_USERDEF_LITERAL
1800 /* The resulting tree type. */
1801 union GTY((desc ("cp_tree_node_structure (&%h)"),
1802 chain_next ("(union lang_tree_node *) c_tree_chain_next (&%h.generic)"))) lang_tree_node {
1803 union tree_node GTY ((tag ("TS_CP_GENERIC"),
1804 desc ("tree_node_structure (&%h)"))) generic;
1805 struct template_parm_index GTY ((tag ("TS_CP_TPI"))) tpi;
1806 struct ptrmem_cst GTY ((tag ("TS_CP_PTRMEM"))) ptrmem;
1807 struct tree_overload GTY ((tag ("TS_CP_OVERLOAD"))) overload;
1808 struct tree_binding_vec GTY ((tag ("TS_CP_BINDING_VECTOR"))) binding_vec;
1809 struct tree_baselink GTY ((tag ("TS_CP_BASELINK"))) baselink;
1810 struct tree_template_decl GTY ((tag ("TS_CP_TEMPLATE_DECL"))) template_decl;
1811 struct tree_deferred_parse GTY ((tag ("TS_CP_DEFERRED_PARSE"))) deferred_parse;
1812 struct tree_deferred_noexcept GTY ((tag ("TS_CP_DEFERRED_NOEXCEPT"))) deferred_noexcept;
1813 struct lang_identifier GTY ((tag ("TS_CP_IDENTIFIER"))) identifier;
1814 struct tree_static_assert GTY ((tag ("TS_CP_STATIC_ASSERT")))
1815 static_assertion;
1816 struct tree_argument_pack_select GTY ((tag ("TS_CP_ARGUMENT_PACK_SELECT")))
1817 argument_pack_select;
1818 struct tree_trait_expr GTY ((tag ("TS_CP_TRAIT_EXPR")))
1819 trait_expression;
1820 struct tree_lambda_expr GTY ((tag ("TS_CP_LAMBDA_EXPR")))
1821 lambda_expression;
1822 struct tree_template_info GTY ((tag ("TS_CP_TEMPLATE_INFO")))
1823 template_info;
1824 struct tree_constraint_info GTY ((tag ("TS_CP_CONSTRAINT_INFO")))
1825 constraint_info;
1826 struct tree_userdef_literal GTY ((tag ("TS_CP_USERDEF_LITERAL")))
1827 userdef_literal;
1831 struct GTY(()) cp_omp_declare_target_attr {
1832 bool attr_syntax;
1833 int device_type;
1836 struct GTY(()) cp_omp_begin_assumes_data {
1837 bool attr_syntax;
1840 /* Global state. */
1842 struct GTY(()) saved_scope {
1843 vec<cxx_saved_binding, va_gc> *old_bindings;
1844 tree old_namespace;
1845 vec<tree, va_gc> *decl_ns_list;
1846 tree class_name;
1847 tree class_type;
1848 tree access_specifier;
1849 tree function_decl;
1850 vec<tree, va_gc> *lang_base;
1851 tree lang_name;
1852 tree template_parms;
1853 cp_binding_level *x_previous_class_level;
1854 tree x_saved_tree;
1856 /* Only used for uses of this in trailing return type. */
1857 tree x_current_class_ptr;
1858 tree x_current_class_ref;
1860 int x_processing_template_decl;
1861 int x_processing_specialization;
1862 int x_processing_constraint;
1863 int x_processing_contract_condition;
1864 int suppress_location_wrappers;
1865 BOOL_BITFIELD x_processing_explicit_instantiation : 1;
1866 BOOL_BITFIELD need_pop_function_context : 1;
1868 /* Nonzero if we are parsing the discarded statement of a constexpr
1869 if-statement. */
1870 BOOL_BITFIELD discarded_stmt : 1;
1871 /* Nonzero if we are parsing or instantiating the compound-statement
1872 of consteval if statement. Also set while processing an immediate
1873 invocation. */
1874 BOOL_BITFIELD consteval_if_p : 1;
1876 int unevaluated_operand;
1877 int inhibit_evaluation_warnings;
1878 int noexcept_operand;
1879 int ref_temp_count;
1881 struct stmt_tree_s x_stmt_tree;
1883 cp_binding_level *class_bindings;
1884 cp_binding_level *bindings;
1886 hash_map<tree, tree> *GTY((skip)) x_local_specializations;
1887 vec<cp_omp_declare_target_attr, va_gc> *omp_declare_target_attribute;
1888 vec<cp_omp_begin_assumes_data, va_gc> *omp_begin_assumes;
1890 struct saved_scope *prev;
1893 extern GTY(()) struct saved_scope *scope_chain;
1895 /* The current open namespace. */
1897 #define current_namespace scope_chain->old_namespace
1899 /* The stack for namespaces of current declarations. */
1901 #define decl_namespace_list scope_chain->decl_ns_list
1903 /* IDENTIFIER_NODE: name of current class */
1905 #define current_class_name scope_chain->class_name
1907 /* _TYPE: the type of the current class */
1909 #define current_class_type scope_chain->class_type
1911 /* When parsing a class definition, the access specifier most recently
1912 given by the user, or, if no access specifier was given, the
1913 default value appropriate for the kind of class (i.e., struct,
1914 class, or union). */
1916 #define current_access_specifier scope_chain->access_specifier
1918 /* Pointer to the top of the language name stack. */
1920 #define current_lang_base scope_chain->lang_base
1921 #define current_lang_name scope_chain->lang_name
1923 /* When parsing a template declaration, a TREE_LIST represents the
1924 active template parameters. Each node in the list represents one
1925 level of template parameters. The innermost level is first in the
1926 list. The depth of each level is stored as an INTEGER_CST in the
1927 TREE_PURPOSE of each node. The parameters for that level are
1928 stored in the TREE_VALUE. */
1930 #define current_template_parms scope_chain->template_parms
1931 #define current_template_depth \
1932 (current_template_parms ? TMPL_PARMS_DEPTH (current_template_parms) : 0)
1933 #define in_template_context (current_template_parms != NULL_TREE)
1935 #define processing_template_decl scope_chain->x_processing_template_decl
1936 #define processing_specialization scope_chain->x_processing_specialization
1937 #define processing_explicit_instantiation scope_chain->x_processing_explicit_instantiation
1939 /* Nonzero if we are parsing the conditional expression of a contract
1940 condition. These expressions appear outside the paramter list (like a
1941 trailing return type), but are potentially evaluated. */
1943 #define processing_contract_condition scope_chain->x_processing_contract_condition
1945 #define in_discarded_stmt scope_chain->discarded_stmt
1946 #define in_consteval_if_p scope_chain->consteval_if_p
1948 #define current_ref_temp_count scope_chain->ref_temp_count
1950 /* RAII sentinel to handle clearing processing_template_decl and restoring
1951 it when done. */
1953 class processing_template_decl_sentinel
1955 public:
1956 int saved;
1957 processing_template_decl_sentinel (bool reset = true)
1958 : saved (processing_template_decl)
1960 if (reset)
1961 processing_template_decl = 0;
1963 ~processing_template_decl_sentinel()
1965 processing_template_decl = saved;
1969 /* RAII sentinel to disable certain warnings during template substitution
1970 and elsewhere. */
1972 class warning_sentinel
1974 public:
1975 int &flag;
1976 int val;
1977 warning_sentinel(int& flag, bool suppress=true)
1978 : flag(flag), val(flag) { if (suppress) flag = 0; }
1979 ~warning_sentinel() { flag = val; }
1982 /* RAII sentinel to temporarily override input_location. This will not set
1983 input_location to UNKNOWN_LOCATION or BUILTINS_LOCATION. */
1985 class iloc_sentinel
1987 location_t saved_loc;
1988 public:
1989 iloc_sentinel (location_t loc): saved_loc (input_location)
1991 if (loc >= RESERVED_LOCATION_COUNT)
1992 input_location = loc;
1994 ~iloc_sentinel ()
1996 input_location = saved_loc;
2000 /* RAII sentinel that saves the value of a variable, optionally
2001 overrides it right away, and restores its value when the sentinel
2002 id destructed. */
2004 template <typename T>
2005 class temp_override
2007 T& overridden_variable;
2008 T saved_value;
2009 public:
2010 temp_override(T& var) : overridden_variable (var), saved_value (var) {}
2011 temp_override(T& var, T overrider)
2012 : overridden_variable (var), saved_value (var)
2014 overridden_variable = overrider;
2016 ~temp_override() { overridden_variable = saved_value; }
2019 /* Wrapping a template parameter in type_identity_t hides it from template
2020 argument deduction. */
2021 #if __cpp_lib_type_identity
2022 using std::type_identity_t;
2023 #else
2024 template <typename T>
2025 struct type_identity { typedef T type; };
2026 template <typename T>
2027 using type_identity_t = typename type_identity<T>::type;
2028 #endif
2030 /* Object generator function for temp_override, so you don't need to write the
2031 type of the object as a template argument.
2033 Use as auto x = make_temp_override (flag); */
2035 template <typename T>
2036 inline temp_override<T>
2037 make_temp_override (T& var)
2039 return { var };
2042 /* Likewise, but use as auto x = make_temp_override (flag, value); */
2044 template <typename T>
2045 inline temp_override<T>
2046 make_temp_override (T& var, type_identity_t<T> overrider)
2048 return { var, overrider };
2051 /* temp_override for in_consteval_if_p, which can't use make_temp_override
2052 because it is a bitfield. */
2054 struct in_consteval_if_p_temp_override {
2055 bool save_in_consteval_if_p;
2056 in_consteval_if_p_temp_override ()
2057 : save_in_consteval_if_p (in_consteval_if_p) {}
2058 void reset () { in_consteval_if_p = save_in_consteval_if_p; }
2059 ~in_consteval_if_p_temp_override ()
2060 { reset (); }
2063 /* The cached class binding level, from the most recently exited
2064 class, or NULL if none. */
2066 #define previous_class_level scope_chain->x_previous_class_level
2068 /* A map from local variable declarations in the body of the template
2069 presently being instantiated to the corresponding instantiated
2070 local variables. */
2072 #define local_specializations scope_chain->x_local_specializations
2074 /* Nonzero if we are parsing the operand of a noexcept operator. */
2076 #define cp_noexcept_operand scope_chain->noexcept_operand
2078 struct named_label_entry; /* Defined in decl.cc. */
2080 struct named_label_hash : ggc_remove <named_label_entry *>
2082 typedef named_label_entry *value_type;
2083 typedef tree compare_type; /* An identifier. */
2085 inline static hashval_t hash (value_type);
2086 inline static bool equal (const value_type, compare_type);
2088 static const bool empty_zero_p = true;
2089 inline static void mark_empty (value_type &p) {p = NULL;}
2090 inline static bool is_empty (value_type p) {return !p;}
2092 /* Nothing is deletable. Everything is insertable. */
2093 inline static bool is_deleted (value_type) { return false; }
2094 inline static void mark_deleted (value_type) { gcc_unreachable (); }
2097 /* Global state pertinent to the current function. */
2099 struct GTY(()) language_function {
2100 struct c_language_function base;
2102 tree x_current_class_ptr;
2103 tree x_current_class_ref;
2104 tree x_eh_spec_block;
2105 tree x_in_charge_parm;
2106 tree x_vtt_parm;
2107 tree x_return_value;
2109 BOOL_BITFIELD returns_value : 1;
2110 BOOL_BITFIELD returns_null : 1;
2111 BOOL_BITFIELD returns_abnormally : 1;
2112 BOOL_BITFIELD infinite_loop: 1;
2113 BOOL_BITFIELD x_in_function_try_handler : 1;
2114 BOOL_BITFIELD x_in_base_initializer : 1;
2116 /* True if this function can throw an exception. */
2117 BOOL_BITFIELD can_throw : 1;
2119 BOOL_BITFIELD invalid_constexpr : 1;
2120 BOOL_BITFIELD throwing_cleanup : 1;
2122 hash_table<named_label_hash> *x_named_labels;
2124 cp_binding_level *bindings;
2126 /* Tracking possibly infinite loops. This is a vec<tree> only because
2127 vec<bool> doesn't work with gtype. */
2128 vec<tree, va_gc> *infinite_loops;
2131 /* The current C++-specific per-function global variables. */
2133 #define cp_function_chain (cfun->language)
2135 /* When we're processing a member function, current_class_ptr is the
2136 PARM_DECL for the `this' pointer. The current_class_ref is an
2137 expression for `*this'. */
2139 #define current_class_ptr \
2140 (*(cfun && cp_function_chain \
2141 ? &cp_function_chain->x_current_class_ptr \
2142 : &scope_chain->x_current_class_ptr))
2143 #define current_class_ref \
2144 (*(cfun && cp_function_chain \
2145 ? &cp_function_chain->x_current_class_ref \
2146 : &scope_chain->x_current_class_ref))
2148 /* The EH_SPEC_BLOCK for the exception-specifiers for the current
2149 function, if any. */
2151 #define current_eh_spec_block cp_function_chain->x_eh_spec_block
2153 /* The `__in_chrg' parameter for the current function. Only used for
2154 constructors and destructors. */
2156 #define current_in_charge_parm cp_function_chain->x_in_charge_parm
2158 /* The `__vtt_parm' parameter for the current function. Only used for
2159 constructors and destructors. */
2161 #define current_vtt_parm cp_function_chain->x_vtt_parm
2163 /* A boolean flag to control whether we need to clean up the return value if a
2164 local destructor throws. Only used in functions that return by value a
2165 class with a destructor. Which 'tors don't, so we can use the same
2166 field as current_vtt_parm. */
2168 #define current_retval_sentinel current_vtt_parm
2170 /* Set to 0 at beginning of a function definition, set to 1 if
2171 a return statement that specifies a return value is seen. */
2173 #define current_function_returns_value cp_function_chain->returns_value
2175 /* Set to 0 at beginning of a function definition, set to 1 if
2176 a return statement with no argument is seen. */
2178 #define current_function_returns_null cp_function_chain->returns_null
2180 /* Set to 0 at beginning of a function definition, set to 1 if
2181 a call to a noreturn function is seen. */
2183 #define current_function_returns_abnormally \
2184 cp_function_chain->returns_abnormally
2186 /* Set to 0 at beginning of a function definition, set to 1 if we see an
2187 obvious infinite loop. This can have false positives and false
2188 negatives, so it should only be used as a heuristic. */
2190 #define current_function_infinite_loop cp_function_chain->infinite_loop
2192 /* Nonzero if we are processing a base initializer. Zero elsewhere. */
2193 #define in_base_initializer cp_function_chain->x_in_base_initializer
2195 #define in_function_try_handler cp_function_chain->x_in_function_try_handler
2197 /* Expression always returned from function, or error_mark_node
2198 otherwise, for use by the automatic named return value optimization. */
2200 #define current_function_return_value \
2201 (cp_function_chain->x_return_value)
2203 /* In parser.cc. */
2204 extern tree cp_literal_operator_id (const char *);
2206 #define NON_ERROR(NODE) ((NODE) == error_mark_node ? NULL_TREE : (NODE))
2208 /* TRUE if a tree code represents a statement. */
2209 extern bool statement_code_p[MAX_TREE_CODES];
2211 #define STATEMENT_CODE_P(CODE) statement_code_p[(int) (CODE)]
2213 enum languages { lang_c, lang_cplusplus };
2215 /* Macros to make error reporting functions' lives easier. */
2216 #define TYPE_LINKAGE_IDENTIFIER(NODE) \
2217 (TYPE_IDENTIFIER (TYPE_MAIN_VARIANT (NODE)))
2218 #define TYPE_NAME_STRING(NODE) (IDENTIFIER_POINTER (TYPE_IDENTIFIER (NODE)))
2219 #define TYPE_NAME_LENGTH(NODE) (IDENTIFIER_LENGTH (TYPE_IDENTIFIER (NODE)))
2221 /* Any kind of anonymous type. */
2222 #define TYPE_ANON_P(NODE) \
2223 (TYPE_LINKAGE_IDENTIFIER (NODE) \
2224 && IDENTIFIER_ANON_P (TYPE_LINKAGE_IDENTIFIER (NODE)))
2226 /* Nonzero if NODE, a TYPE, has no name for linkage purposes. */
2227 #define TYPE_UNNAMED_P(NODE) \
2228 (TYPE_ANON_P (NODE) \
2229 && !IDENTIFIER_LAMBDA_P (TYPE_LINKAGE_IDENTIFIER (NODE)))
2231 /* The _DECL for this _TYPE. */
2232 #define TYPE_MAIN_DECL(NODE) (TYPE_STUB_DECL (TYPE_MAIN_VARIANT (NODE)))
2234 /* Nonzero if T is a type that could resolve to any kind of concrete type
2235 at instantiation time. */
2236 #define WILDCARD_TYPE_P(T) \
2237 (TREE_CODE (T) == TEMPLATE_TYPE_PARM \
2238 || TREE_CODE (T) == TYPENAME_TYPE \
2239 || TREE_CODE (T) == TYPEOF_TYPE \
2240 || TREE_CODE (T) == BOUND_TEMPLATE_TEMPLATE_PARM \
2241 || TREE_CODE (T) == DECLTYPE_TYPE \
2242 || TREE_CODE (T) == TRAIT_TYPE \
2243 || TREE_CODE (T) == DEPENDENT_OPERATOR_TYPE)
2245 /* Nonzero if T is a class (or struct or union) type. Also nonzero
2246 for template type parameters, typename types, and instantiated
2247 template template parameters. Keep these checks in ascending code
2248 order. */
2249 #define MAYBE_CLASS_TYPE_P(T) (WILDCARD_TYPE_P (T) || CLASS_TYPE_P (T))
2251 /* Set CLASS_TYPE_P for T to VAL. T must be a class, struct, or
2252 union type. */
2253 #define SET_CLASS_TYPE_P(T, VAL) \
2254 (TYPE_LANG_FLAG_5 (RECORD_OR_UNION_CHECK (T)) = (VAL))
2256 /* Nonzero if T is a class type. Zero for template type parameters,
2257 typename types, and so forth. */
2258 #define CLASS_TYPE_P(T) \
2259 (RECORD_OR_UNION_CODE_P (TREE_CODE (T)) && TYPE_LANG_FLAG_5 (T))
2261 /* Nonzero if T is a class type but not a union. */
2262 #define NON_UNION_CLASS_TYPE_P(T) \
2263 (TREE_CODE (T) == RECORD_TYPE && TYPE_LANG_FLAG_5 (T))
2265 /* Keep these checks in ascending code order. */
2266 #define RECORD_OR_UNION_CODE_P(T) \
2267 ((T) == RECORD_TYPE || (T) == UNION_TYPE)
2268 #define OVERLOAD_TYPE_P(T) \
2269 (CLASS_TYPE_P (T) || TREE_CODE (T) == ENUMERAL_TYPE)
2271 /* True if this type is dependent. This predicate is only valid if
2272 TYPE_DEPENDENT_P_VALID is true. */
2273 #define TYPE_DEPENDENT_P(NODE) TYPE_LANG_FLAG_0 (NODE)
2275 /* True if dependent_type_p has been called for this type, with the
2276 result that TYPE_DEPENDENT_P is valid. */
2277 #define TYPE_DEPENDENT_P_VALID(NODE) TYPE_LANG_FLAG_6(NODE)
2279 /* Nonzero if this type is const-qualified. */
2280 #define CP_TYPE_CONST_P(NODE) \
2281 ((cp_type_quals (NODE) & TYPE_QUAL_CONST) != 0)
2283 /* Nonzero if this type is volatile-qualified. */
2284 #define CP_TYPE_VOLATILE_P(NODE) \
2285 ((cp_type_quals (NODE) & TYPE_QUAL_VOLATILE) != 0)
2287 /* Nonzero if this type is restrict-qualified. */
2288 #define CP_TYPE_RESTRICT_P(NODE) \
2289 ((cp_type_quals (NODE) & TYPE_QUAL_RESTRICT) != 0)
2291 /* Nonzero if this type is const-qualified, but not
2292 volatile-qualified. Other qualifiers are ignored. This macro is
2293 used to test whether or not it is OK to bind an rvalue to a
2294 reference. */
2295 #define CP_TYPE_CONST_NON_VOLATILE_P(NODE) \
2296 ((cp_type_quals (NODE) & (TYPE_QUAL_CONST | TYPE_QUAL_VOLATILE)) \
2297 == TYPE_QUAL_CONST)
2299 #define FUNCTION_ARG_CHAIN(NODE) \
2300 TREE_CHAIN (TYPE_ARG_TYPES (TREE_TYPE (NODE)))
2302 /* Given a FUNCTION_DECL, returns the first TREE_LIST out of TYPE_ARG_TYPES
2303 which refers to a user-written parameter. */
2304 #define FUNCTION_FIRST_USER_PARMTYPE(NODE) \
2305 skip_artificial_parms_for ((NODE), TYPE_ARG_TYPES (TREE_TYPE (NODE)))
2307 /* Similarly, but for DECL_ARGUMENTS. */
2308 #define FUNCTION_FIRST_USER_PARM(NODE) \
2309 skip_artificial_parms_for ((NODE), DECL_ARGUMENTS (NODE))
2311 /* Nonzero iff TYPE is derived from PARENT. Ignores accessibility and
2312 ambiguity issues. */
2313 #define DERIVED_FROM_P(PARENT, TYPE) \
2314 (lookup_base ((TYPE), (PARENT), ba_any, NULL, tf_none) != NULL_TREE)
2316 /* Gives the visibility specification for a class type. */
2317 #define CLASSTYPE_VISIBILITY(TYPE) \
2318 DECL_VISIBILITY (TYPE_MAIN_DECL (TYPE))
2319 #define CLASSTYPE_VISIBILITY_SPECIFIED(TYPE) \
2320 DECL_VISIBILITY_SPECIFIED (TYPE_MAIN_DECL (TYPE))
2322 struct GTY (()) tree_pair_s {
2323 tree purpose;
2324 tree value;
2326 typedef tree_pair_s *tree_pair_p;
2328 /* This structure provides additional information above and beyond
2329 what is provide in the ordinary tree_type. In the past, we used it
2330 for the types of class types, template parameters types, typename
2331 types, and so forth. However, there can be many (tens to hundreds
2332 of thousands) of template parameter types in a compilation, and
2333 there's no need for this additional information in that case.
2334 Therefore, we now use this data structure only for class types.
2336 In the past, it was thought that there would be relatively few
2337 class types. However, in the presence of heavy use of templates,
2338 many (i.e., thousands) of classes can easily be generated.
2339 Therefore, we should endeavor to keep the size of this structure to
2340 a minimum. */
2341 struct GTY(()) lang_type {
2342 unsigned char align;
2344 unsigned has_type_conversion : 1;
2345 unsigned has_copy_ctor : 1;
2346 unsigned has_default_ctor : 1;
2347 unsigned const_needs_init : 1;
2348 unsigned ref_needs_init : 1;
2349 unsigned has_const_copy_assign : 1;
2350 unsigned use_template : 2;
2352 unsigned has_mutable : 1;
2353 unsigned com_interface : 1;
2354 unsigned non_pod_class : 1;
2355 unsigned nearly_empty_p : 1;
2356 unsigned user_align : 1;
2357 unsigned has_copy_assign : 1;
2358 unsigned has_new : 1;
2359 unsigned has_array_new : 1;
2361 unsigned gets_delete : 2;
2362 unsigned interface_only : 1;
2363 unsigned interface_unknown : 1;
2364 unsigned contains_empty_class_p : 1;
2365 unsigned anon_aggr : 1;
2366 unsigned non_zero_init : 1;
2367 unsigned empty_p : 1;
2368 /* 32 bits allocated. */
2370 unsigned vec_new_uses_cookie : 1;
2371 unsigned declared_class : 1;
2372 unsigned diamond_shaped : 1;
2373 unsigned repeated_base : 1;
2374 unsigned being_defined : 1;
2375 unsigned debug_requested : 1;
2376 unsigned fields_readonly : 1;
2377 unsigned ptrmemfunc_flag : 1;
2379 unsigned lazy_default_ctor : 1;
2380 unsigned lazy_copy_ctor : 1;
2381 unsigned lazy_copy_assign : 1;
2382 unsigned lazy_destructor : 1;
2383 unsigned has_const_copy_ctor : 1;
2384 unsigned has_complex_copy_ctor : 1;
2385 unsigned has_complex_copy_assign : 1;
2386 unsigned non_aggregate : 1;
2388 unsigned has_complex_dflt : 1;
2389 unsigned has_list_ctor : 1;
2390 unsigned non_std_layout : 1;
2391 unsigned is_literal : 1;
2392 unsigned lazy_move_ctor : 1;
2393 unsigned lazy_move_assign : 1;
2394 unsigned has_complex_move_ctor : 1;
2395 unsigned has_complex_move_assign : 1;
2397 unsigned has_constexpr_ctor : 1;
2398 unsigned unique_obj_representations : 1;
2399 unsigned unique_obj_representations_set : 1;
2400 bool erroneous : 1;
2401 bool non_pod_aggregate : 1;
2403 /* When adding a flag here, consider whether or not it ought to
2404 apply to a template instance if it applies to the template. If
2405 so, make sure to copy it in instantiate_class_template! */
2407 /* There are some bits left to fill out a 32-bit word. Keep track
2408 of this by updating the size of this bitfield whenever you add or
2409 remove a flag. */
2410 unsigned dummy : 3;
2412 tree primary_base;
2413 vec<tree_pair_s, va_gc> *vcall_indices;
2414 tree vtables;
2415 tree typeinfo_var;
2416 vec<tree, va_gc> *vbases;
2417 tree as_base;
2418 vec<tree, va_gc> *pure_virtuals;
2419 tree friend_classes;
2420 vec<tree, va_gc> * GTY((reorder ("resort_type_member_vec"))) members;
2421 tree key_method;
2422 tree decl_list;
2423 tree befriending_classes;
2424 /* In a RECORD_TYPE, information specific to Objective-C++, such
2425 as a list of adopted protocols or a pointer to a corresponding
2426 @interface. See objc/objc-act.h for details. */
2427 tree objc_info;
2428 /* FIXME reuse another field? */
2429 tree lambda_expr;
2432 /* We used to have a variant type for lang_type. Keep the name of the
2433 checking accessor for the sole survivor. */
2434 #define LANG_TYPE_CLASS_CHECK(NODE) (TYPE_LANG_SPECIFIC (NODE))
2436 /* Nonzero for _CLASSTYPE means that operator delete is defined. */
2437 #define TYPE_GETS_DELETE(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->gets_delete)
2438 #define TYPE_GETS_REG_DELETE(NODE) (TYPE_GETS_DELETE (NODE) & 1)
2439 #define TYPE_GETS_VEC_DELETE(NODE) (TYPE_GETS_DELETE (NODE) & 2)
2441 /* Nonzero if `new NODE[x]' should cause the allocation of extra
2442 storage to indicate how many array elements are in use. */
2443 #define TYPE_VEC_NEW_USES_COOKIE(NODE) \
2444 (CLASS_TYPE_P (NODE) \
2445 && LANG_TYPE_CLASS_CHECK (NODE)->vec_new_uses_cookie)
2447 /* Nonzero means that this _CLASSTYPE node defines ways of converting
2448 itself to other types. */
2449 #define TYPE_HAS_CONVERSION(NODE) \
2450 (LANG_TYPE_CLASS_CHECK (NODE)->has_type_conversion)
2452 /* Nonzero means that NODE (a class type) has a default constructor --
2453 but that it has not yet been declared. */
2454 #define CLASSTYPE_LAZY_DEFAULT_CTOR(NODE) \
2455 (LANG_TYPE_CLASS_CHECK (NODE)->lazy_default_ctor)
2457 /* Nonzero means that NODE (a class type) has a copy constructor --
2458 but that it has not yet been declared. */
2459 #define CLASSTYPE_LAZY_COPY_CTOR(NODE) \
2460 (LANG_TYPE_CLASS_CHECK (NODE)->lazy_copy_ctor)
2462 /* Nonzero means that NODE (a class type) has a move constructor --
2463 but that it has not yet been declared. */
2464 #define CLASSTYPE_LAZY_MOVE_CTOR(NODE) \
2465 (LANG_TYPE_CLASS_CHECK (NODE)->lazy_move_ctor)
2467 /* Nonzero means that NODE (a class type) has an assignment operator
2468 -- but that it has not yet been declared. */
2469 #define CLASSTYPE_LAZY_COPY_ASSIGN(NODE) \
2470 (LANG_TYPE_CLASS_CHECK (NODE)->lazy_copy_assign)
2472 /* Nonzero means that NODE (a class type) has an assignment operator
2473 -- but that it has not yet been declared. */
2474 #define CLASSTYPE_LAZY_MOVE_ASSIGN(NODE) \
2475 (LANG_TYPE_CLASS_CHECK (NODE)->lazy_move_assign)
2477 /* Nonzero means that NODE (a class type) has a destructor -- but that
2478 it has not yet been declared. */
2479 #define CLASSTYPE_LAZY_DESTRUCTOR(NODE) \
2480 (LANG_TYPE_CLASS_CHECK (NODE)->lazy_destructor)
2482 /* Nonzero means that NODE (a class type) is final */
2483 #define CLASSTYPE_FINAL(NODE) \
2484 TYPE_FINAL_P (NODE)
2487 /* Nonzero means that this _CLASSTYPE node overloads operator=(X&). */
2488 #define TYPE_HAS_COPY_ASSIGN(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->has_copy_assign)
2490 /* True iff the class type NODE has an "operator =" whose parameter
2491 has a parameter of type "const X&". */
2492 #define TYPE_HAS_CONST_COPY_ASSIGN(NODE) \
2493 (LANG_TYPE_CLASS_CHECK (NODE)->has_const_copy_assign)
2495 /* Nonzero means that this _CLASSTYPE node has an X(X&) constructor. */
2496 #define TYPE_HAS_COPY_CTOR(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->has_copy_ctor)
2497 #define TYPE_HAS_CONST_COPY_CTOR(NODE) \
2498 (LANG_TYPE_CLASS_CHECK (NODE)->has_const_copy_ctor)
2500 /* Nonzero if this class has an X(initializer_list<T>) constructor. */
2501 #define TYPE_HAS_LIST_CTOR(NODE) \
2502 (LANG_TYPE_CLASS_CHECK (NODE)->has_list_ctor)
2504 /* Nonzero if this class has a constexpr constructor other than a copy/move
2505 constructor. Note that a class can have constexpr constructors for
2506 static initialization even if it isn't a literal class. */
2507 #define TYPE_HAS_CONSTEXPR_CTOR(NODE) \
2508 (LANG_TYPE_CLASS_CHECK (NODE)->has_constexpr_ctor)
2510 /* Nonzero if this class defines an overloaded operator new. (An
2511 operator new [] doesn't count.) */
2512 #define TYPE_HAS_NEW_OPERATOR(NODE) \
2513 (LANG_TYPE_CLASS_CHECK (NODE)->has_new)
2515 /* Nonzero if this class defines an overloaded operator new[]. */
2516 #define TYPE_HAS_ARRAY_NEW_OPERATOR(NODE) \
2517 (LANG_TYPE_CLASS_CHECK (NODE)->has_array_new)
2519 /* Nonzero means that this type is being defined. I.e., the left brace
2520 starting the definition of this type has been seen. */
2521 #define TYPE_BEING_DEFINED(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->being_defined)
2523 /* Nonzero means that this type is either complete or being defined, so we
2524 can do lookup in it. */
2525 #define COMPLETE_OR_OPEN_TYPE_P(NODE) \
2526 (COMPLETE_TYPE_P (NODE) || (CLASS_TYPE_P (NODE) && TYPE_BEING_DEFINED (NODE)))
2528 /* Mark bits for repeated base checks. */
2529 #define TYPE_MARKED_P(NODE) TREE_LANG_FLAG_6 (TYPE_CHECK (NODE))
2531 /* Nonzero if the class NODE has multiple paths to the same (virtual)
2532 base object. */
2533 #define CLASSTYPE_DIAMOND_SHAPED_P(NODE) \
2534 (LANG_TYPE_CLASS_CHECK(NODE)->diamond_shaped)
2536 /* Nonzero if the class NODE has multiple instances of the same base
2537 type. */
2538 #define CLASSTYPE_REPEATED_BASE_P(NODE) \
2539 (LANG_TYPE_CLASS_CHECK(NODE)->repeated_base)
2541 /* The member function with which the vtable will be emitted:
2542 the first noninline non-pure-virtual member function. NULL_TREE
2543 if there is no key function or if this is a class template */
2544 #define CLASSTYPE_KEY_METHOD(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->key_method)
2546 /* Vector of members. During definition, it is unordered and only
2547 member functions are present. After completion it is sorted and
2548 contains both member functions and non-functions. STAT_HACK is
2549 involved to preserve oneslot per name invariant. */
2550 #define CLASSTYPE_MEMBER_VEC(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->members)
2552 /* For class templates, this is a TREE_LIST of all member data,
2553 functions, types, and friends in the order of declaration.
2554 The TREE_PURPOSE of each TREE_LIST is NULL_TREE for a friend,
2555 and the RECORD_TYPE for the class template otherwise. */
2556 #define CLASSTYPE_DECL_LIST(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->decl_list)
2558 /* A FUNCTION_DECL or OVERLOAD for the constructors for NODE. These
2559 are the constructors that take an in-charge parameter. */
2560 #define CLASSTYPE_CONSTRUCTORS(NODE) \
2561 (get_class_binding_direct (NODE, ctor_identifier))
2563 /* A FUNCTION_DECL for the destructor for NODE. This is the
2564 destructors that take an in-charge parameter. If
2565 CLASSTYPE_LAZY_DESTRUCTOR is true, then this entry will be NULL
2566 until the destructor is created with lazily_declare_fn. */
2567 #define CLASSTYPE_DESTRUCTOR(NODE) \
2568 (get_class_binding_direct (NODE, dtor_identifier))
2570 /* Nonzero if NODE has a primary base class, i.e., a base class with
2571 which it shares the virtual function table pointer. */
2572 #define CLASSTYPE_HAS_PRIMARY_BASE_P(NODE) \
2573 (CLASSTYPE_PRIMARY_BINFO (NODE) != NULL_TREE)
2575 /* If non-NULL, this is the binfo for the primary base class, i.e.,
2576 the base class which contains the virtual function table pointer
2577 for this class. */
2578 #define CLASSTYPE_PRIMARY_BINFO(NODE) \
2579 (LANG_TYPE_CLASS_CHECK (NODE)->primary_base)
2581 /* A vector of BINFOs for the direct and indirect virtual base classes
2582 that this type uses in a post-order depth-first left-to-right
2583 order. (In other words, these bases appear in the order that they
2584 should be initialized.) */
2585 #define CLASSTYPE_VBASECLASSES(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->vbases)
2587 /* The type corresponding to NODE when NODE is used as a base class,
2588 i.e., NODE without virtual base classes or tail padding. */
2589 #define CLASSTYPE_AS_BASE(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->as_base)
2591 /* True iff NODE is the CLASSTYPE_AS_BASE version of some type. */
2592 #define IS_FAKE_BASE_TYPE(NODE) \
2593 (TREE_CODE (NODE) == RECORD_TYPE \
2594 && TYPE_CONTEXT (NODE) && CLASS_TYPE_P (TYPE_CONTEXT (NODE)) \
2595 && CLASSTYPE_AS_BASE (TYPE_CONTEXT (NODE)) == (NODE))
2597 /* These are the size and alignment of the type without its virtual
2598 base classes, for when we use this type as a base itself. */
2599 #define CLASSTYPE_SIZE(NODE) TYPE_SIZE (CLASSTYPE_AS_BASE (NODE))
2600 #define CLASSTYPE_SIZE_UNIT(NODE) TYPE_SIZE_UNIT (CLASSTYPE_AS_BASE (NODE))
2601 #define CLASSTYPE_ALIGN(NODE) TYPE_ALIGN (CLASSTYPE_AS_BASE (NODE))
2602 #define CLASSTYPE_USER_ALIGN(NODE) TYPE_USER_ALIGN (CLASSTYPE_AS_BASE (NODE))
2604 /* The alignment of NODE, without its virtual bases, in bytes. */
2605 #define CLASSTYPE_ALIGN_UNIT(NODE) \
2606 (CLASSTYPE_ALIGN (NODE) / BITS_PER_UNIT)
2608 /* A vec<tree> of virtual functions which cannot be inherited by
2609 derived classes. When deriving from this type, the derived
2610 class must provide its own definition for each of these functions. */
2611 #define CLASSTYPE_PURE_VIRTUALS(NODE) \
2612 (LANG_TYPE_CLASS_CHECK (NODE)->pure_virtuals)
2614 /* Nonzero means that this type is an abstract class type. */
2615 #define ABSTRACT_CLASS_TYPE_P(NODE) \
2616 (CLASS_TYPE_P (NODE) && CLASSTYPE_PURE_VIRTUALS(NODE))
2618 /* Nonzero means that this type has an X() constructor. */
2619 #define TYPE_HAS_DEFAULT_CONSTRUCTOR(NODE) \
2620 (LANG_TYPE_CLASS_CHECK (NODE)->has_default_ctor)
2622 /* Nonzero means that this type contains a mutable member. */
2623 #define CLASSTYPE_HAS_MUTABLE(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->has_mutable)
2624 #define TYPE_HAS_MUTABLE_P(NODE) (cp_has_mutable_p (NODE))
2626 /* Nonzero means that this class type is not POD for the purpose of layout
2627 (as defined in the ABI). This is different from the language's POD. */
2628 #define CLASSTYPE_NON_LAYOUT_POD_P(NODE) \
2629 (LANG_TYPE_CLASS_CHECK (NODE)->non_pod_class)
2631 /* Nonzero means that this class type is a non-standard-layout class. */
2632 #define CLASSTYPE_NON_STD_LAYOUT(NODE) \
2633 (LANG_TYPE_CLASS_CHECK (NODE)->non_std_layout)
2635 /* Nonzero means that this class type does have unique object
2636 representations. */
2637 #define CLASSTYPE_UNIQUE_OBJ_REPRESENTATIONS(NODE) \
2638 (LANG_TYPE_CLASS_CHECK (NODE)->unique_obj_representations)
2640 /* Nonzero means that this class type has
2641 CLASSTYPE_UNIQUE_OBJ_REPRESENTATIONS computed. */
2642 #define CLASSTYPE_UNIQUE_OBJ_REPRESENTATIONS_SET(NODE) \
2643 (LANG_TYPE_CLASS_CHECK (NODE)->unique_obj_representations_set)
2645 /* Nonzero means that this class contains pod types whose default
2646 initialization is not a zero initialization (namely, pointers to
2647 data members). */
2648 #define CLASSTYPE_NON_ZERO_INIT_P(NODE) \
2649 (LANG_TYPE_CLASS_CHECK (NODE)->non_zero_init)
2651 /* Nonzero if this class is "empty" in the sense of the C++ ABI. */
2652 #define CLASSTYPE_EMPTY_P(NODE) \
2653 (LANG_TYPE_CLASS_CHECK (NODE)->empty_p)
2655 /* Nonzero if this class is "nearly empty", i.e., contains only a
2656 virtual function table pointer. */
2657 #define CLASSTYPE_NEARLY_EMPTY_P(NODE) \
2658 (LANG_TYPE_CLASS_CHECK (NODE)->nearly_empty_p)
2660 /* Nonzero if this class contains an empty subobject. */
2661 #define CLASSTYPE_CONTAINS_EMPTY_CLASS_P(NODE) \
2662 (LANG_TYPE_CLASS_CHECK (NODE)->contains_empty_class_p)
2664 /* A list of class types of which this type is a friend. The
2665 TREE_VALUE is normally a TYPE, but will be a TEMPLATE_DECL in the
2666 case of a template friend. */
2667 #define CLASSTYPE_FRIEND_CLASSES(NODE) \
2668 (LANG_TYPE_CLASS_CHECK (NODE)->friend_classes)
2670 /* A list of the classes which grant friendship to this class. */
2671 #define CLASSTYPE_BEFRIENDING_CLASSES(NODE) \
2672 (LANG_TYPE_CLASS_CHECK (NODE)->befriending_classes)
2674 /* The associated LAMBDA_EXPR that made this class. */
2675 #define CLASSTYPE_LAMBDA_EXPR(NODE) \
2676 (LANG_TYPE_CLASS_CHECK (NODE)->lambda_expr)
2677 /* The extra mangling scope for this closure type. */
2678 #define LAMBDA_TYPE_EXTRA_SCOPE(NODE) \
2679 (LAMBDA_EXPR_EXTRA_SCOPE (CLASSTYPE_LAMBDA_EXPR (NODE)))
2681 /* Say whether this node was declared as a "class" or a "struct". */
2682 #define CLASSTYPE_DECLARED_CLASS(NODE) \
2683 (LANG_TYPE_CLASS_CHECK (NODE)->declared_class)
2685 /* Nonzero if this class has const members
2686 which have no specified initialization. */
2687 #define CLASSTYPE_READONLY_FIELDS_NEED_INIT(NODE) \
2688 (TYPE_LANG_SPECIFIC (NODE) \
2689 ? LANG_TYPE_CLASS_CHECK (NODE)->const_needs_init : 0)
2690 #define SET_CLASSTYPE_READONLY_FIELDS_NEED_INIT(NODE, VALUE) \
2691 (LANG_TYPE_CLASS_CHECK (NODE)->const_needs_init = (VALUE))
2693 /* Nonzero if this class has ref members
2694 which have no specified initialization. */
2695 #define CLASSTYPE_REF_FIELDS_NEED_INIT(NODE) \
2696 (TYPE_LANG_SPECIFIC (NODE) \
2697 ? LANG_TYPE_CLASS_CHECK (NODE)->ref_needs_init : 0)
2698 #define SET_CLASSTYPE_REF_FIELDS_NEED_INIT(NODE, VALUE) \
2699 (LANG_TYPE_CLASS_CHECK (NODE)->ref_needs_init = (VALUE))
2701 /* Nonzero if this class is included from a header file which employs
2702 `#pragma interface', and it is not included in its implementation file. */
2703 #define CLASSTYPE_INTERFACE_ONLY(NODE) \
2704 (LANG_TYPE_CLASS_CHECK (NODE)->interface_only)
2706 /* True if we have already determined whether or not vtables, VTTs,
2707 typeinfo, and other similar per-class data should be emitted in
2708 this translation unit. This flag does not indicate whether or not
2709 these items should be emitted; it only indicates that we know one
2710 way or the other. */
2711 #define CLASSTYPE_INTERFACE_KNOWN(NODE) \
2712 (LANG_TYPE_CLASS_CHECK (NODE)->interface_unknown == 0)
2713 /* The opposite of CLASSTYPE_INTERFACE_KNOWN. */
2714 #define CLASSTYPE_INTERFACE_UNKNOWN(NODE) \
2715 (LANG_TYPE_CLASS_CHECK (NODE)->interface_unknown)
2717 #define SET_CLASSTYPE_INTERFACE_UNKNOWN_X(NODE,X) \
2718 (LANG_TYPE_CLASS_CHECK (NODE)->interface_unknown = !!(X))
2719 #define SET_CLASSTYPE_INTERFACE_UNKNOWN(NODE) \
2720 (LANG_TYPE_CLASS_CHECK (NODE)->interface_unknown = 1)
2721 #define SET_CLASSTYPE_INTERFACE_KNOWN(NODE) \
2722 (LANG_TYPE_CLASS_CHECK (NODE)->interface_unknown = 0)
2724 /* Nonzero if a _DECL node requires us to output debug info for this class. */
2725 #define CLASSTYPE_DEBUG_REQUESTED(NODE) \
2726 (LANG_TYPE_CLASS_CHECK (NODE)->debug_requested)
2728 /* True if we saw errors while instantiating this class. */
2729 #define CLASSTYPE_ERRONEOUS(NODE) \
2730 (LANG_TYPE_CLASS_CHECK (NODE)->erroneous)
2732 /* True if this class is non-layout-POD only because it was not an aggregate
2733 before C++14. If we run out of bits in lang_type, this could be replaced
2734 with a hash_set only filled in when abi_version_crosses (17). */
2735 #define CLASSTYPE_NON_POD_AGGREGATE(NODE) \
2736 (LANG_TYPE_CLASS_CHECK (NODE)->non_pod_aggregate)
2738 /* Additional macros for inheritance information. */
2740 /* Nonzero means that this class is on a path leading to a new vtable. */
2741 #define BINFO_VTABLE_PATH_MARKED(NODE) BINFO_FLAG_1 (NODE)
2743 /* Nonzero means B (a BINFO) has its own vtable. Any copies will not
2744 have this flag set. */
2745 #define BINFO_NEW_VTABLE_MARKED(B) (BINFO_FLAG_2 (B))
2747 /* Compare a BINFO_TYPE with another type for equality. For a binfo,
2748 this is functionally equivalent to using same_type_p, but
2749 measurably faster. At least one of the arguments must be a
2750 BINFO_TYPE. The other can be a BINFO_TYPE or a regular type. If
2751 BINFO_TYPE(T) ever stops being the main variant of the class the
2752 binfo is for, this macro must change. */
2753 #define SAME_BINFO_TYPE_P(A, B) ((A) == (B))
2755 /* Any subobject that needs a new vtable must have a vptr and must not
2756 be a non-virtual primary base (since it would then use the vtable from a
2757 derived class and never become non-primary.) */
2758 #define SET_BINFO_NEW_VTABLE_MARKED(B) \
2759 (BINFO_NEW_VTABLE_MARKED (B) = 1, \
2760 gcc_assert (!BINFO_PRIMARY_P (B) || BINFO_VIRTUAL_P (B)), \
2761 gcc_assert (TYPE_VFIELD (BINFO_TYPE (B))))
2763 /* Nonzero if this binfo is for a dependent base - one that should not
2764 be searched. */
2765 #define BINFO_DEPENDENT_BASE_P(NODE) BINFO_FLAG_3 (NODE)
2767 /* Nonzero if this binfo has lost its primary base binfo (because that
2768 is a nearly-empty virtual base that has been taken by some other
2769 base in the complete hierarchy. */
2770 #define BINFO_LOST_PRIMARY_P(NODE) BINFO_FLAG_4 (NODE)
2772 /* Nonzero if this BINFO is a primary base class. */
2773 #define BINFO_PRIMARY_P(NODE) BINFO_FLAG_5(NODE)
2775 /* A vec<tree_pair_s> of the vcall indices associated with the class
2776 NODE. The PURPOSE of each element is a FUNCTION_DECL for a virtual
2777 function. The VALUE is the index into the virtual table where the
2778 vcall offset for that function is stored, when NODE is a virtual
2779 base. */
2780 #define CLASSTYPE_VCALL_INDICES(NODE) \
2781 (LANG_TYPE_CLASS_CHECK (NODE)->vcall_indices)
2783 /* The various vtables for the class NODE. The primary vtable will be
2784 first, followed by the construction vtables and VTT, if any. */
2785 #define CLASSTYPE_VTABLES(NODE) \
2786 (LANG_TYPE_CLASS_CHECK (NODE)->vtables)
2788 /* The std::type_info variable representing this class, or NULL if no
2789 such variable has been created. This field is only set for the
2790 TYPE_MAIN_VARIANT of the class. */
2791 #define CLASSTYPE_TYPEINFO_VAR(NODE) \
2792 (LANG_TYPE_CLASS_CHECK (NODE)->typeinfo_var)
2794 /* Accessor macros for the BINFO_VIRTUALS list. */
2796 /* The number of bytes by which to adjust the `this' pointer when
2797 calling this virtual function. Subtract this value from the this
2798 pointer. Always non-NULL, might be constant zero though. */
2799 #define BV_DELTA(NODE) (TREE_PURPOSE (NODE))
2801 /* If non-NULL, the vtable index at which to find the vcall offset
2802 when calling this virtual function. Add the value at that vtable
2803 index to the this pointer. */
2804 #define BV_VCALL_INDEX(NODE) (TREE_TYPE (NODE))
2806 /* The function to call. */
2807 #define BV_FN(NODE) (TREE_VALUE (NODE))
2809 /* Whether or not this entry is for a lost primary virtual base. */
2810 #define BV_LOST_PRIMARY(NODE) (TREE_LANG_FLAG_0 (NODE))
2812 /* For FUNCTION_TYPE or METHOD_TYPE, a list of the exceptions that
2813 this type can raise. Each TREE_VALUE is a _TYPE. The TREE_VALUE
2814 will be NULL_TREE to indicate a throw specification of `()', or
2815 no exceptions allowed. For a noexcept specification, TREE_VALUE
2816 is NULL_TREE and TREE_PURPOSE is the constant-expression. For
2817 a deferred noexcept-specification, TREE_PURPOSE is a DEFERRED_NOEXCEPT
2818 (for templates) or an OVERLOAD list of functions (for implicitly
2819 declared functions). */
2820 #define TYPE_RAISES_EXCEPTIONS(NODE) \
2821 TYPE_LANG_SLOT_1 (FUNC_OR_METHOD_CHECK (NODE))
2823 /* For FUNCTION_TYPE or METHOD_TYPE, return 1 iff it is declared `throw()'
2824 or noexcept(true). */
2825 #define TYPE_NOTHROW_P(NODE) nothrow_spec_p (TYPE_RAISES_EXCEPTIONS (NODE))
2827 /* For FUNCTION_TYPE or METHOD_TYPE, true if NODE is noexcept. This is the
2828 case for things declared noexcept(true) and, with -fnothrow-opt, for
2829 throw() functions. */
2830 #define TYPE_NOEXCEPT_P(NODE) type_noexcept_p (NODE)
2832 /* The binding level associated with the namespace. */
2833 #define NAMESPACE_LEVEL(NODE) \
2834 (LANG_DECL_NS_CHECK (NODE)->level)
2836 /* Discriminator values for lang_decl. */
2838 enum lang_decl_selector
2840 lds_min,
2841 lds_fn,
2842 lds_ns,
2843 lds_parm,
2844 lds_decomp
2847 /* Flags shared by all forms of DECL_LANG_SPECIFIC.
2849 Some of the flags live here only to make lang_decl_min/fn smaller. Do
2850 not make this struct larger than 32 bits. */
2852 struct GTY(()) lang_decl_base {
2853 ENUM_BITFIELD(lang_decl_selector) selector : 3;
2854 ENUM_BITFIELD(languages) language : 1;
2855 unsigned use_template : 2;
2856 unsigned not_really_extern : 1; /* var or fn */
2857 unsigned initialized_in_class : 1; /* var or fn */
2859 unsigned threadprivate_or_deleted_p : 1; /* var or fn */
2860 /* anticipated_p is no longer used for anticipated_decls (fn, type
2861 or template). It is used as DECL_OMP_PRIVATIZED_MEMBER in
2862 var. */
2863 unsigned anticipated_p : 1;
2864 unsigned friend_or_tls : 1; /* var, fn, type or template */
2865 unsigned unknown_bound_p : 1; /* var */
2866 unsigned odr_used : 1; /* var or fn */
2867 unsigned concept_p : 1; /* applies to vars and functions */
2868 unsigned var_declared_inline_p : 1; /* var */
2869 unsigned dependent_init_p : 1; /* var */
2871 /* The following apply to VAR, FUNCTION, TYPE, CONCEPT, & NAMESPACE
2872 decls. */
2873 unsigned module_purview_p : 1; // in named-module purview
2874 unsigned module_attach_p : 1; // attached to named module
2875 unsigned module_import_p : 1; /* from an import */
2876 unsigned module_entity_p : 1; /* is in the entitity ary &
2877 hash. */
2878 /* VAR_DECL or FUNCTION_DECL has keyed decls. */
2879 unsigned module_keyed_decls_p : 1;
2881 /* 12 spare bits. */
2884 /* True for DECL codes which have template info and access. */
2885 #define LANG_DECL_HAS_MIN(NODE) \
2886 (VAR_OR_FUNCTION_DECL_P (NODE) \
2887 || TREE_CODE (NODE) == FIELD_DECL \
2888 || TREE_CODE (NODE) == CONST_DECL \
2889 || TREE_CODE (NODE) == TYPE_DECL \
2890 || TREE_CODE (NODE) == TEMPLATE_DECL \
2891 || TREE_CODE (NODE) == USING_DECL \
2892 || TREE_CODE (NODE) == CONCEPT_DECL)
2894 /* DECL_LANG_SPECIFIC for the above codes. */
2896 struct GTY(()) lang_decl_min {
2897 struct lang_decl_base base; /* 32-bits. */
2899 /* In a FUNCTION_DECL for which DECL_THUNK_P holds, this is
2900 THUNK_ALIAS.
2901 In a FUNCTION_DECL for which DECL_THUNK_P does not hold,
2902 VAR_DECL, TYPE_DECL, or TEMPLATE_DECL, this is
2903 DECL_TEMPLATE_INFO. */
2904 tree template_info;
2906 /* In a DECL_THUNK_P FUNCTION_DECL, this is THUNK_VIRTUAL_OFFSET.
2907 In a lambda-capture proxy VAR_DECL, this is DECL_CAPTURED_VARIABLE.
2908 In a function-scope TREE_STATIC VAR_DECL or IMPLICIT_TYPEDEF_P TYPE_DECL,
2909 this is DECL_DISCRIMINATOR.
2910 In a DECL_LOCAL_DECL_P decl, this is the namespace decl it aliases.
2911 Otherwise, in a class-scope DECL, this is DECL_ACCESS. */
2912 tree access;
2915 /* Additional DECL_LANG_SPECIFIC information for functions. */
2917 struct GTY(()) lang_decl_fn {
2918 struct lang_decl_min min;
2920 /* In a overloaded operator, this is the compressed operator code. */
2921 unsigned ovl_op_code : 6;
2922 unsigned global_ctor_p : 1;
2923 unsigned global_dtor_p : 1;
2925 unsigned static_function : 1;
2926 unsigned pure_virtual : 1;
2927 unsigned defaulted_p : 1;
2928 unsigned has_in_charge_parm_p : 1;
2929 unsigned has_vtt_parm_p : 1;
2930 unsigned pending_inline_p : 1;
2931 unsigned nonconverting : 1;
2932 unsigned thunk_p : 1;
2934 unsigned this_thunk_p : 1;
2935 unsigned omp_declare_reduction_p : 1;
2936 unsigned has_dependent_explicit_spec_p : 1;
2937 unsigned immediate_fn_p : 1;
2938 unsigned maybe_deleted : 1;
2939 unsigned coroutine_p : 1;
2940 unsigned implicit_constexpr : 1;
2942 unsigned spare : 9;
2944 /* 32-bits padding on 64-bit host. */
2946 /* For a non-thunk function decl, this is a tree list of
2947 friendly classes. For a thunk function decl, it is the
2948 thunked to function decl. */
2949 tree befriending_classes;
2951 /* For a virtual FUNCTION_DECL for which
2952 DECL_THIS_THUNK_P does not hold, this is DECL_THUNKS. Both
2953 this pointer and result pointer adjusting thunks are
2954 chained here. This pointer thunks to return pointer thunks
2955 will be chained on the return pointer thunk.
2956 For a DECL_CONSTUCTOR_P FUNCTION_DECL, this is the base from
2957 whence we inherit. Otherwise, it is the class in which a
2958 (namespace-scope) friend is defined (if any). */
2959 tree context;
2961 union lang_decl_u5
2963 /* In a non-thunk FUNCTION_DECL, this is DECL_CLONED_FUNCTION. */
2964 tree GTY ((tag ("0"))) cloned_function;
2966 /* In a FUNCTION_DECL for which THUNK_P holds this is the
2967 THUNK_FIXED_OFFSET. */
2968 HOST_WIDE_INT GTY ((tag ("1"))) fixed_offset;
2969 } GTY ((desc ("%1.thunk_p"))) u5;
2971 union lang_decl_u3
2973 struct cp_token_cache * GTY ((tag ("1"))) pending_inline_info;
2974 tree GTY ((tag ("0"))) saved_auto_return_type;
2975 } GTY ((desc ("%1.pending_inline_p"))) u;
2979 /* DECL_LANG_SPECIFIC for namespaces. */
2981 struct GTY(()) lang_decl_ns {
2982 struct lang_decl_base base; /* 32 bits. */
2983 cp_binding_level *level;
2985 /* Inline children. Needs to be va_gc, because of PCH. */
2986 vec<tree, va_gc> *inlinees;
2988 /* Hash table of bound decls. It'd be nice to have this inline, but
2989 as the hash_map has a dtor, we can't then put this struct into a
2990 union (until moving to c++11). */
2991 hash_table<named_decl_hash> *bindings;
2994 /* DECL_LANG_SPECIFIC for parameters. */
2996 struct GTY(()) lang_decl_parm {
2997 struct lang_decl_base base; /* 32 bits. */
2998 int level;
2999 int index;
3002 /* Additional DECL_LANG_SPECIFIC information for structured bindings. */
3004 struct GTY(()) lang_decl_decomp {
3005 struct lang_decl_min min;
3006 /* The artificial underlying "e" variable of the structured binding
3007 variable. */
3008 tree base;
3011 /* DECL_LANG_SPECIFIC for all types. It would be nice to just make this a
3012 union rather than a struct containing a union as its only field, but
3013 tree.h declares it as a struct. */
3015 struct GTY(()) lang_decl {
3016 union GTY((desc ("%h.base.selector"))) lang_decl_u {
3017 /* Nothing of only the base type exists. */
3018 struct lang_decl_base GTY ((default)) base;
3019 struct lang_decl_min GTY((tag ("lds_min"))) min;
3020 struct lang_decl_fn GTY ((tag ("lds_fn"))) fn;
3021 struct lang_decl_ns GTY((tag ("lds_ns"))) ns;
3022 struct lang_decl_parm GTY((tag ("lds_parm"))) parm;
3023 struct lang_decl_decomp GTY((tag ("lds_decomp"))) decomp;
3024 } u;
3027 /* Looks through a template (if present) to find what it declares. */
3028 #define STRIP_TEMPLATE(NODE) \
3029 (TREE_CODE (NODE) == TEMPLATE_DECL ? DECL_TEMPLATE_RESULT (NODE) : NODE)
3031 #if defined ENABLE_TREE_CHECKING && (GCC_VERSION >= 2007)
3033 #define LANG_DECL_MIN_CHECK(NODE) __extension__ \
3034 ({ struct lang_decl *lt = DECL_LANG_SPECIFIC (NODE); \
3035 if (!LANG_DECL_HAS_MIN (NODE)) \
3036 lang_check_failed (__FILE__, __LINE__, __FUNCTION__); \
3037 &lt->u.min; })
3039 /* We want to be able to check DECL_CONSTRUCTOR_P and such on a function
3040 template, not just on a FUNCTION_DECL. So when looking for things in
3041 lang_decl_fn, look down through a TEMPLATE_DECL into its result. */
3042 #define LANG_DECL_FN_CHECK(NODE) __extension__ \
3043 ({ struct lang_decl *lt = DECL_LANG_SPECIFIC (STRIP_TEMPLATE (NODE)); \
3044 if (!DECL_DECLARES_FUNCTION_P (NODE) \
3045 || lt->u.base.selector != lds_fn) \
3046 lang_check_failed (__FILE__, __LINE__, __FUNCTION__); \
3047 &lt->u.fn; })
3049 #define LANG_DECL_NS_CHECK(NODE) __extension__ \
3050 ({ struct lang_decl *lt = DECL_LANG_SPECIFIC (NODE); \
3051 if (TREE_CODE (NODE) != NAMESPACE_DECL \
3052 || lt->u.base.selector != lds_ns) \
3053 lang_check_failed (__FILE__, __LINE__, __FUNCTION__); \
3054 &lt->u.ns; })
3056 #define LANG_DECL_PARM_CHECK(NODE) __extension__ \
3057 ({ struct lang_decl *lt = DECL_LANG_SPECIFIC (NODE); \
3058 if (TREE_CODE (NODE) != PARM_DECL \
3059 || lt->u.base.selector != lds_parm) \
3060 lang_check_failed (__FILE__, __LINE__, __FUNCTION__); \
3061 &lt->u.parm; })
3063 #define LANG_DECL_DECOMP_CHECK(NODE) __extension__ \
3064 ({ struct lang_decl *lt = DECL_LANG_SPECIFIC (NODE); \
3065 if (!VAR_P (NODE) \
3066 || lt->u.base.selector != lds_decomp) \
3067 lang_check_failed (__FILE__, __LINE__, __FUNCTION__); \
3068 &lt->u.decomp; })
3070 #else
3072 #define LANG_DECL_MIN_CHECK(NODE) \
3073 (&DECL_LANG_SPECIFIC (NODE)->u.min)
3075 #define LANG_DECL_FN_CHECK(NODE) \
3076 (&DECL_LANG_SPECIFIC (STRIP_TEMPLATE (NODE))->u.fn)
3078 #define LANG_DECL_NS_CHECK(NODE) \
3079 (&DECL_LANG_SPECIFIC (NODE)->u.ns)
3081 #define LANG_DECL_PARM_CHECK(NODE) \
3082 (&DECL_LANG_SPECIFIC (NODE)->u.parm)
3084 #define LANG_DECL_DECOMP_CHECK(NODE) \
3085 (&DECL_LANG_SPECIFIC (NODE)->u.decomp)
3087 #endif /* ENABLE_TREE_CHECKING */
3089 /* For a FUNCTION_DECL or a VAR_DECL, the language linkage for the
3090 declaration. Some entities (like a member function in a local
3091 class, or a local variable) do not have linkage at all, and this
3092 macro should not be used in those cases.
3094 Implementation note: A FUNCTION_DECL without DECL_LANG_SPECIFIC was
3095 created by language-independent code, and has C linkage. Most
3096 VAR_DECLs have C++ linkage, and do not have DECL_LANG_SPECIFIC, but
3097 we do create DECL_LANG_SPECIFIC for variables with non-C++ linkage. */
3098 #define DECL_LANGUAGE(NODE) \
3099 (DECL_LANG_SPECIFIC (NODE) \
3100 ? DECL_LANG_SPECIFIC (NODE)->u.base.language \
3101 : (TREE_CODE (NODE) == FUNCTION_DECL \
3102 ? lang_c : lang_cplusplus))
3104 /* Set the language linkage for NODE to LANGUAGE. */
3105 #define SET_DECL_LANGUAGE(NODE, LANGUAGE) \
3106 (DECL_LANG_SPECIFIC (NODE)->u.base.language = (LANGUAGE))
3108 /* For FUNCTION_DECLs and TEMPLATE_DECLs: nonzero means that this function
3109 is a constructor. */
3110 #define DECL_CONSTRUCTOR_P(NODE) \
3111 DECL_CXX_CONSTRUCTOR_P (STRIP_TEMPLATE (NODE))
3113 /* Nonzero if NODE (a FUNCTION_DECL) is a constructor for a complete
3114 object. */
3115 #define DECL_COMPLETE_CONSTRUCTOR_P(NODE) \
3116 (DECL_NAME (NODE) == complete_ctor_identifier)
3118 /* Nonzero if NODE (a FUNCTION_DECL) is a constructor for a base
3119 object. */
3120 #define DECL_BASE_CONSTRUCTOR_P(NODE) \
3121 (DECL_NAME (NODE) == base_ctor_identifier)
3123 /* Nonzero if NODE (a FUNCTION_DECL) is a constructor, but not either the
3124 specialized in-charge constructor or the specialized not-in-charge
3125 constructor. */
3126 #define DECL_MAYBE_IN_CHARGE_CONSTRUCTOR_P(NODE) \
3127 (DECL_NAME (NODE) == ctor_identifier)
3129 /* Nonzero if NODE (a FUNCTION_DECL) is a copy constructor. */
3130 #define DECL_COPY_CONSTRUCTOR_P(NODE) \
3131 (DECL_CONSTRUCTOR_P (NODE) && copy_fn_p (NODE) > 0)
3133 /* Nonzero if NODE (a FUNCTION_DECL) is a move constructor. */
3134 #define DECL_MOVE_CONSTRUCTOR_P(NODE) \
3135 (DECL_CONSTRUCTOR_P (NODE) && move_fn_p (NODE))
3137 /* Nonzero if NODE (a FUNCTION_DECL or TEMPLATE_DECL)
3138 is a destructor. */
3139 #define DECL_DESTRUCTOR_P(NODE) \
3140 DECL_CXX_DESTRUCTOR_P (STRIP_TEMPLATE (NODE))
3142 /* Nonzero if NODE (a FUNCTION_DECL) is a destructor, but not the
3143 specialized in-charge constructor, in-charge deleting constructor,
3144 or the base destructor. */
3145 #define DECL_MAYBE_IN_CHARGE_DESTRUCTOR_P(NODE) \
3146 (DECL_NAME (NODE) == dtor_identifier)
3148 /* Nonzero if NODE (a FUNCTION_DECL) is a destructor for a complete
3149 object. */
3150 #define DECL_COMPLETE_DESTRUCTOR_P(NODE) \
3151 (DECL_NAME (NODE) == complete_dtor_identifier)
3153 /* Nonzero if NODE (a FUNCTION_DECL) is a destructor for a base
3154 object. */
3155 #define DECL_BASE_DESTRUCTOR_P(NODE) \
3156 (DECL_NAME (NODE) == base_dtor_identifier)
3158 /* Nonzero if NODE (a FUNCTION_DECL) is a destructor for a complete
3159 object that deletes the object after it has been destroyed. */
3160 #define DECL_DELETING_DESTRUCTOR_P(NODE) \
3161 (DECL_NAME (NODE) == deleting_dtor_identifier)
3163 /* Nonzero if either DECL_MAYBE_IN_CHARGE_CONSTRUCTOR_P or
3164 DECL_MAYBE_IN_CHARGE_DESTRUCTOR_P is true of NODE. */
3165 #define DECL_MAYBE_IN_CHARGE_CDTOR_P(NODE) \
3166 (DECL_MAYBE_IN_CHARGE_CONSTRUCTOR_P (NODE) \
3167 || DECL_MAYBE_IN_CHARGE_DESTRUCTOR_P (NODE))
3169 /* Nonzero if NODE (a _DECL) is a cloned constructor or
3170 destructor. */
3171 #define DECL_CLONED_FUNCTION_P(NODE) \
3172 (DECL_NAME (NODE) \
3173 && IDENTIFIER_CDTOR_P (DECL_NAME (NODE)) \
3174 && !DECL_MAYBE_IN_CHARGE_CDTOR_P (NODE))
3176 /* If DECL_CLONED_FUNCTION_P holds, this is the function that was
3177 cloned. */
3178 #define DECL_CLONED_FUNCTION(NODE) \
3179 (DECL_LANG_SPECIFIC (FUNCTION_DECL_CHECK (NODE))->u.fn.u5.cloned_function)
3181 /* Perform an action for each clone of FN, if FN is a function with
3182 clones. This macro should be used like:
3184 FOR_EACH_CLONE (clone, fn)
3185 { ... }
3188 #define FOR_EACH_CLONE(CLONE, FN) \
3189 if (!(TREE_CODE (FN) == FUNCTION_DECL \
3190 && DECL_MAYBE_IN_CHARGE_CDTOR_P (FN))) \
3192 else \
3193 for (CLONE = DECL_CHAIN (FN); \
3194 CLONE && DECL_CLONED_FUNCTION_P (CLONE); \
3195 CLONE = DECL_CHAIN (CLONE))
3197 /* Nonzero if NODE has DECL_DISCRIMINATOR and not DECL_ACCESS. */
3198 #define DECL_DISCRIMINATOR_P(NODE) \
3199 (((VAR_P (NODE) && TREE_STATIC (NODE)) \
3200 || DECL_IMPLICIT_TYPEDEF_P (NODE)) \
3201 && DECL_FUNCTION_SCOPE_P (NODE))
3203 /* Discriminator for name mangling. */
3204 #define DECL_DISCRIMINATOR(NODE) (LANG_DECL_MIN_CHECK (NODE)->access)
3206 /* The index of a user-declared parameter in its function, starting at 1.
3207 All artificial parameters will have index 0. */
3208 #define DECL_PARM_INDEX(NODE) \
3209 (LANG_DECL_PARM_CHECK (NODE)->index)
3211 /* The level of a user-declared parameter in its function, starting at 1.
3212 A parameter of the function will have level 1; a parameter of the first
3213 nested function declarator (i.e. t in void f (void (*p)(T t))) will have
3214 level 2. */
3215 #define DECL_PARM_LEVEL(NODE) \
3216 (LANG_DECL_PARM_CHECK (NODE)->level)
3218 /* Nonzero if the VTT parm has been added to NODE. */
3219 #define DECL_HAS_VTT_PARM_P(NODE) \
3220 (LANG_DECL_FN_CHECK (NODE)->has_vtt_parm_p)
3222 /* Nonzero if NODE is a user-defined conversion operator. */
3223 #define DECL_CONV_FN_P(NODE) IDENTIFIER_CONV_OP_P (DECL_NAME (NODE))
3225 /* The type to which conversion operator FN converts to. */
3226 #define DECL_CONV_FN_TYPE(FN) \
3227 TREE_TYPE ((gcc_checking_assert (DECL_CONV_FN_P (FN)), DECL_NAME (FN)))
3229 /* Nonzero if NODE, a static data member, was declared in its class as an
3230 array of unknown bound. */
3231 #define VAR_HAD_UNKNOWN_BOUND(NODE) \
3232 (DECL_LANG_SPECIFIC (VAR_DECL_CHECK (NODE)) \
3233 ? DECL_LANG_SPECIFIC (NODE)->u.base.unknown_bound_p \
3234 : false)
3235 #define SET_VAR_HAD_UNKNOWN_BOUND(NODE) \
3236 (DECL_LANG_SPECIFIC (VAR_DECL_CHECK (NODE))->u.base.unknown_bound_p = true)
3238 /* True iff decl NODE is for an overloaded operator. */
3239 #define DECL_OVERLOADED_OPERATOR_P(NODE) \
3240 IDENTIFIER_ANY_OP_P (DECL_NAME (NODE))
3242 /* Nonzero if NODE is an assignment operator (including += and such). */
3243 #define DECL_ASSIGNMENT_OPERATOR_P(NODE) \
3244 IDENTIFIER_ASSIGN_OP_P (DECL_NAME (NODE))
3246 /* NODE is a function_decl for an overloaded operator. Return its
3247 compressed (raw) operator code. Note that this is not a TREE_CODE. */
3248 #define DECL_OVERLOADED_OPERATOR_CODE_RAW(NODE) \
3249 (LANG_DECL_FN_CHECK (NODE)->ovl_op_code)
3251 /* DECL is an overloaded operator. Test whether it is for TREE_CODE
3252 (a literal constant). */
3253 #define DECL_OVERLOADED_OPERATOR_IS(DECL, CODE) \
3254 (DECL_OVERLOADED_OPERATOR_CODE_RAW (DECL) == OVL_OP_##CODE)
3256 /* For FUNCTION_DECLs: nonzero means that this function is a
3257 constructor or a destructor with an extra in-charge parameter to
3258 control whether or not virtual bases are constructed. */
3259 #define DECL_HAS_IN_CHARGE_PARM_P(NODE) \
3260 (LANG_DECL_FN_CHECK (NODE)->has_in_charge_parm_p)
3262 /* Nonzero if DECL is a declaration of __builtin_constant_p. */
3263 #define DECL_IS_BUILTIN_CONSTANT_P(NODE) \
3264 (TREE_CODE (NODE) == FUNCTION_DECL \
3265 && DECL_BUILT_IN_CLASS (NODE) == BUILT_IN_NORMAL \
3266 && DECL_FUNCTION_CODE (NODE) == BUILT_IN_CONSTANT_P)
3268 /* Nonzero for _DECL means that this decl appears in (or will appear
3269 in) as a member in a RECORD_TYPE or UNION_TYPE node. It is also for
3270 detecting circularity in case members are multiply defined. In the
3271 case of a VAR_DECL, it means that no definition has been seen, even
3272 if an initializer has been. */
3273 #define DECL_IN_AGGR_P(NODE) (DECL_LANG_FLAG_3 (NODE))
3275 /* Nonzero for a VAR_DECL means that the variable's initialization (if
3276 any) has been processed. (In general, DECL_INITIALIZED_P is
3277 !DECL_EXTERNAL, but static data members may be initialized even if
3278 not defined.) */
3279 #define DECL_INITIALIZED_P(NODE) \
3280 (TREE_LANG_FLAG_1 (VAR_DECL_CHECK (NODE)))
3282 /* Nonzero for a VAR_DECL iff an explicit initializer was provided
3283 or a non-trivial constructor is called. */
3284 #define DECL_NONTRIVIALLY_INITIALIZED_P(NODE) \
3285 (TREE_LANG_FLAG_6 (VAR_DECL_CHECK (NODE)))
3287 /* Nonzero for a VAR_DECL that was initialized with a
3288 constant-expression. */
3289 #define DECL_INITIALIZED_BY_CONSTANT_EXPRESSION_P(NODE) \
3290 (TREE_LANG_FLAG_2 (VAR_DECL_CHECK (NODE)))
3292 /* Nonzero if the DECL was initialized in the class definition itself,
3293 rather than outside the class. This is used for both static member
3294 VAR_DECLS, and FUNCTION_DECLS that are defined in the class. */
3295 #define DECL_INITIALIZED_IN_CLASS_P(DECL) \
3296 (DECL_LANG_SPECIFIC (VAR_OR_FUNCTION_DECL_CHECK (DECL)) \
3297 ->u.base.initialized_in_class)
3299 /* Nonzero if the DECL is used in the sense of 3.2 [basic.def.odr].
3300 Only available for decls with DECL_LANG_SPECIFIC. */
3301 #define DECL_ODR_USED(DECL) \
3302 (DECL_LANG_SPECIFIC (VAR_OR_FUNCTION_DECL_CHECK (DECL)) \
3303 ->u.base.odr_used)
3305 /* Nonzero for FUNCTION_DECL means that this is a friend that is
3306 either not pushed into a namespace/looked up in a class (because it
3307 is a dependent type, in an uninstantiated template), or it has
3308 /only/ been subject to hidden friend injection from one or more
3309 befriending classes. Once another decl matches, the flag is
3310 cleared. There are requirements on its default parms. */
3311 #define DECL_UNIQUE_FRIEND_P(NODE) \
3312 (DECL_LANG_SPECIFIC (FUNCTION_DECL_CHECK (NODE)) \
3313 ->u.base.friend_or_tls)
3315 /* True of a TEMPLATE_DECL that is a template class friend. Such
3316 decls are not pushed until instantiated (as they may depend on
3317 parameters of the befriending class). DECL_CHAIN is the
3318 befriending class. */
3319 #define DECL_UNINSTANTIATED_TEMPLATE_FRIEND_P(NODE) \
3320 (DECL_LANG_FLAG_4 (TEMPLATE_DECL_CHECK (NODE)))
3322 /* Nonzero if the thread-local variable was declared with __thread as
3323 opposed to thread_local. */
3324 #define DECL_GNU_TLS_P(NODE) \
3325 (DECL_LANG_SPECIFIC (VAR_DECL_CHECK (NODE)) \
3326 && DECL_LANG_SPECIFIC (NODE)->u.base.friend_or_tls)
3327 #define SET_DECL_GNU_TLS_P(NODE) \
3328 (retrofit_lang_decl (VAR_DECL_CHECK (NODE)), \
3329 DECL_LANG_SPECIFIC (NODE)->u.base.friend_or_tls = true)
3331 /* A TREE_LIST of the types which have befriended this FUNCTION_DECL. */
3332 #define DECL_BEFRIENDING_CLASSES(NODE) \
3333 (LANG_DECL_FN_CHECK (NODE)->befriending_classes)
3335 /* Nonzero for FUNCTION_DECL means that this decl is a static
3336 member function. */
3337 #define DECL_STATIC_FUNCTION_P(NODE) \
3338 (LANG_DECL_FN_CHECK (NODE)->static_function)
3340 /* Nonzero for FUNCTION_DECL means that this decl is a non-static
3341 member function. */
3342 #define DECL_NONSTATIC_MEMBER_FUNCTION_P(NODE) \
3343 (TREE_CODE (TREE_TYPE (NODE)) == METHOD_TYPE)
3345 /* Nonzero for FUNCTION_DECL means that this decl is a member function
3346 (static or non-static). */
3347 #define DECL_FUNCTION_MEMBER_P(NODE) \
3348 (DECL_NONSTATIC_MEMBER_FUNCTION_P (NODE) || DECL_STATIC_FUNCTION_P (NODE))
3350 /* Nonzero for FUNCTION_DECL means that this member function
3351 has `this' as const X *const. */
3352 #define DECL_CONST_MEMFUNC_P(NODE) \
3353 (DECL_NONSTATIC_MEMBER_FUNCTION_P (NODE) \
3354 && CP_TYPE_CONST_P (TREE_TYPE (TREE_VALUE \
3355 (TYPE_ARG_TYPES (TREE_TYPE (NODE))))))
3357 /* Nonzero for FUNCTION_DECL means that this member function
3358 has `this' as volatile X *const. */
3359 #define DECL_VOLATILE_MEMFUNC_P(NODE) \
3360 (DECL_NONSTATIC_MEMBER_FUNCTION_P (NODE) \
3361 && CP_TYPE_VOLATILE_P (TREE_TYPE (TREE_VALUE \
3362 (TYPE_ARG_TYPES (TREE_TYPE (NODE))))))
3364 /* Nonzero for a DECL means that this member is a non-static member. */
3365 #define DECL_NONSTATIC_MEMBER_P(NODE) \
3366 (DECL_NONSTATIC_MEMBER_FUNCTION_P (NODE) \
3367 || TREE_CODE (NODE) == FIELD_DECL)
3369 /* Nonzero for a FIELD_DECL means that this member object type
3370 is mutable. */
3371 #define DECL_MUTABLE_P(NODE) (DECL_LANG_FLAG_0 (FIELD_DECL_CHECK (NODE)))
3373 /* Nonzero for _DECL means that this constructor or conversion function is
3374 non-converting. */
3375 #define DECL_NONCONVERTING_P(NODE) \
3376 (LANG_DECL_FN_CHECK (NODE)->nonconverting)
3378 /* Nonzero for FUNCTION_DECL means that this member function is a pure
3379 virtual function. */
3380 #define DECL_PURE_VIRTUAL_P(NODE) \
3381 (LANG_DECL_FN_CHECK (NODE)->pure_virtual)
3383 /* Nonzero for FUNCTION_DECL means that this member function (either
3384 a constructor or a conversion function) has an explicit specifier
3385 with a value-dependent expression. */
3386 #define DECL_HAS_DEPENDENT_EXPLICIT_SPEC_P(NODE) \
3387 (LANG_DECL_FN_CHECK (NODE)->has_dependent_explicit_spec_p)
3389 /* Nonzero for a defaulted FUNCTION_DECL for which we haven't decided yet if
3390 it's deleted; we will decide in synthesize_method. */
3391 #define DECL_MAYBE_DELETED(NODE) \
3392 (LANG_DECL_FN_CHECK (NODE)->maybe_deleted)
3394 /* True (in a FUNCTION_DECL) if NODE is a virtual function that is an
3395 invalid overrider for a function from a base class. Once we have
3396 complained about an invalid overrider we avoid complaining about it
3397 again. */
3398 #define DECL_INVALID_OVERRIDER_P(NODE) \
3399 (DECL_LANG_FLAG_4 (NODE))
3401 /* True (in a FUNCTION_DECL) if NODE is a function declared with
3402 an override virt-specifier */
3403 #define DECL_OVERRIDE_P(NODE) (TREE_LANG_FLAG_0 (NODE))
3405 /* The thunks associated with NODE, a FUNCTION_DECL. */
3406 #define DECL_THUNKS(NODE) \
3407 (DECL_VIRTUAL_P (NODE) ? LANG_DECL_FN_CHECK (NODE)->context : NULL_TREE)
3409 /* Set DECL_THUNKS. */
3410 #define SET_DECL_THUNKS(NODE,THUNKS) \
3411 (LANG_DECL_FN_CHECK (NODE)->context = (THUNKS))
3413 /* If NODE, a FUNCTION_DECL, is a C++11 inheriting constructor, then this
3414 is the constructor it inherits from. */
3415 #define DECL_INHERITED_CTOR(NODE) \
3416 (DECL_DECLARES_FUNCTION_P (NODE) && DECL_CONSTRUCTOR_P (NODE) \
3417 ? LANG_DECL_FN_CHECK (NODE)->context : NULL_TREE)
3419 /* And this is the base that constructor comes from. */
3420 #define DECL_INHERITED_CTOR_BASE(NODE) \
3421 (DECL_INHERITED_CTOR (NODE) \
3422 ? DECL_CONTEXT (flag_new_inheriting_ctors \
3423 ? strip_inheriting_ctors (NODE) \
3424 : DECL_INHERITED_CTOR (NODE)) \
3425 : NULL_TREE)
3427 /* Set the inherited base. */
3428 #define SET_DECL_INHERITED_CTOR(NODE,INH) \
3429 (LANG_DECL_FN_CHECK (NODE)->context = (INH))
3431 /* Nonzero if NODE is a thunk, rather than an ordinary function. */
3432 #define DECL_THUNK_P(NODE) \
3433 (TREE_CODE (NODE) == FUNCTION_DECL \
3434 && DECL_LANG_SPECIFIC (NODE) \
3435 && LANG_DECL_FN_CHECK (NODE)->thunk_p)
3437 /* Set DECL_THUNK_P for node. */
3438 #define SET_DECL_THUNK_P(NODE, THIS_ADJUSTING) \
3439 (LANG_DECL_FN_CHECK (NODE)->thunk_p = 1, \
3440 LANG_DECL_FN_CHECK (NODE)->this_thunk_p = (THIS_ADJUSTING))
3442 /* Nonzero if NODE is a this pointer adjusting thunk. */
3443 #define DECL_THIS_THUNK_P(NODE) \
3444 (DECL_THUNK_P (NODE) && LANG_DECL_FN_CHECK (NODE)->this_thunk_p)
3446 /* Nonzero if NODE is a result pointer adjusting thunk. */
3447 #define DECL_RESULT_THUNK_P(NODE) \
3448 (DECL_THUNK_P (NODE) && !LANG_DECL_FN_CHECK (NODE)->this_thunk_p)
3450 /* Nonzero if NODE is a FUNCTION_DECL, but not a thunk. */
3451 #define DECL_NON_THUNK_FUNCTION_P(NODE) \
3452 (TREE_CODE (NODE) == FUNCTION_DECL && !DECL_THUNK_P (NODE))
3454 /* Nonzero if NODE is `extern "C"'. */
3455 #define DECL_EXTERN_C_P(NODE) \
3456 (DECL_LANGUAGE (NODE) == lang_c)
3458 /* Nonzero if NODE is an `extern "C"' function. */
3459 #define DECL_EXTERN_C_FUNCTION_P(NODE) \
3460 (DECL_NON_THUNK_FUNCTION_P (NODE) && DECL_EXTERN_C_P (NODE))
3462 /* Non-zero if this variable is declared `constinit' specifier. */
3463 #define DECL_DECLARED_CONSTINIT_P(NODE) \
3464 (DECL_LANG_FLAG_7 (VAR_DECL_CHECK (NODE)))
3466 /* True if DECL is declared 'constexpr'. */
3467 #define DECL_DECLARED_CONSTEXPR_P(DECL) \
3468 DECL_LANG_FLAG_8 (VAR_OR_FUNCTION_DECL_CHECK (STRIP_TEMPLATE (DECL)))
3470 /* True if FNDECL is an immediate function. */
3471 #define DECL_IMMEDIATE_FUNCTION_P(NODE) \
3472 (DECL_LANG_SPECIFIC (FUNCTION_DECL_CHECK (STRIP_TEMPLATE (NODE))) \
3473 ? LANG_DECL_FN_CHECK (NODE)->immediate_fn_p \
3474 : false)
3475 #define SET_DECL_IMMEDIATE_FUNCTION_P(NODE) \
3476 (retrofit_lang_decl (FUNCTION_DECL_CHECK (NODE)), \
3477 LANG_DECL_FN_CHECK (NODE)->immediate_fn_p = true)
3479 // True if NODE was declared as 'concept'. The flag implies that the
3480 // declaration is constexpr, that the declaration cannot be specialized or
3481 // refined, and that the result type must be convertible to bool.
3482 #define DECL_DECLARED_CONCEPT_P(NODE) \
3483 (DECL_LANG_SPECIFIC (NODE)->u.base.concept_p)
3485 /* Nonzero if this DECL is the __PRETTY_FUNCTION__ variable in a
3486 template function. */
3487 #define DECL_PRETTY_FUNCTION_P(NODE) \
3488 (DECL_NAME (NODE) \
3489 && id_equal (DECL_NAME (NODE), "__PRETTY_FUNCTION__"))
3491 /* For a DECL, true if it is __func__ or similar. */
3492 #define DECL_FNAME_P(NODE) \
3493 (VAR_P (NODE) && DECL_NAME (NODE) && DECL_ARTIFICIAL (NODE) \
3494 && DECL_HAS_VALUE_EXPR_P (NODE) \
3495 && (id_equal (DECL_NAME (NODE), "__PRETTY_FUNCTION__") \
3496 || id_equal (DECL_NAME (NODE), "__FUNCTION__") \
3497 || id_equal (DECL_NAME (NODE), "__func__")))
3499 /* Nonzero if the variable was declared to be thread-local.
3500 We need a special C++ version of this test because the middle-end
3501 DECL_THREAD_LOCAL_P uses the symtab, so we can't use it for
3502 templates. */
3503 #define CP_DECL_THREAD_LOCAL_P(NODE) \
3504 (TREE_LANG_FLAG_0 (VAR_DECL_CHECK (NODE)))
3506 /* The _TYPE context in which this _DECL appears. This field holds the
3507 class where a virtual function instance is actually defined. */
3508 #define DECL_CLASS_CONTEXT(NODE) \
3509 (DECL_CLASS_SCOPE_P (NODE) ? DECL_CONTEXT (NODE) : NULL_TREE)
3511 /* For a non-member friend function, the class (if any) in which this
3512 friend was defined. For example, given:
3514 struct S { friend void f () { ... } };
3516 the DECL_FRIEND_CONTEXT for `f' will be `S'. */
3517 #define DECL_FRIEND_CONTEXT(NODE) \
3518 ((DECL_DECLARES_FUNCTION_P (NODE) && !DECL_VIRTUAL_P (NODE) \
3519 && !DECL_CONSTRUCTOR_P (NODE)) \
3520 ? LANG_DECL_FN_CHECK (NODE)->context \
3521 : NULL_TREE)
3523 /* Set the DECL_FRIEND_CONTEXT for NODE to CONTEXT. */
3524 #define SET_DECL_FRIEND_CONTEXT(NODE, CONTEXT) \
3525 (LANG_DECL_FN_CHECK (NODE)->context = (CONTEXT))
3527 #define CP_DECL_CONTEXT(NODE) \
3528 (!DECL_FILE_SCOPE_P (NODE) ? DECL_CONTEXT (NODE) : global_namespace)
3529 #define CP_TYPE_CONTEXT(NODE) \
3530 (!TYPE_FILE_SCOPE_P (NODE) ? TYPE_CONTEXT (NODE) : global_namespace)
3531 #define FROB_CONTEXT(NODE) \
3532 ((NODE) == global_namespace ? DECL_CONTEXT (NODE) : (NODE))
3534 /* 1 iff NODE has namespace scope, including the global namespace. */
3535 #define DECL_NAMESPACE_SCOPE_P(NODE) \
3536 (!DECL_TEMPLATE_PARM_P (NODE) \
3537 && TREE_CODE (CP_DECL_CONTEXT (NODE)) == NAMESPACE_DECL)
3539 #define TYPE_NAMESPACE_SCOPE_P(NODE) \
3540 (TREE_CODE (CP_TYPE_CONTEXT (NODE)) == NAMESPACE_DECL)
3542 #define NAMESPACE_SCOPE_P(NODE) \
3543 ((DECL_P (NODE) && DECL_NAMESPACE_SCOPE_P (NODE)) \
3544 || (TYPE_P (NODE) && TYPE_NAMESPACE_SCOPE_P (NODE)))
3546 /* 1 iff NODE is a class member. */
3547 #define DECL_CLASS_SCOPE_P(NODE) \
3548 (DECL_CONTEXT (NODE) && TYPE_P (DECL_CONTEXT (NODE)))
3550 #define TYPE_CLASS_SCOPE_P(NODE) \
3551 (TYPE_CONTEXT (NODE) && TYPE_P (TYPE_CONTEXT (NODE)))
3553 /* 1 iff NODE is function-local. */
3554 #define DECL_FUNCTION_SCOPE_P(NODE) \
3555 (DECL_CONTEXT (NODE) \
3556 && TREE_CODE (DECL_CONTEXT (NODE)) == FUNCTION_DECL)
3558 #define TYPE_FUNCTION_SCOPE_P(NODE) \
3559 (TYPE_CONTEXT (NODE) && TREE_CODE (TYPE_CONTEXT (NODE)) == FUNCTION_DECL)
3561 /* 1 iff VAR_DECL node NODE is a type-info decl. This flag is set for
3562 both the primary typeinfo object and the associated NTBS name. */
3563 #define DECL_TINFO_P(NODE) \
3564 TREE_LANG_FLAG_4 (TREE_CHECK2 (NODE,VAR_DECL,TYPE_DECL))
3566 /* true iff VAR_DECL node NODE is a NTTP object decl. */
3567 #define DECL_NTTP_OBJECT_P(NODE) \
3568 TREE_LANG_FLAG_5 (TREE_CHECK (NODE,VAR_DECL))
3570 /* 1 iff VAR_DECL node NODE is virtual table or VTT. We forward to
3571 DECL_VIRTUAL_P from the common code, as that has the semantics we
3572 need. But we want a more descriptive name. */
3573 #define DECL_VTABLE_OR_VTT_P(NODE) DECL_VIRTUAL_P (VAR_DECL_CHECK (NODE))
3575 /* 1 iff FUNCTION_TYPE or METHOD_TYPE has a ref-qualifier (either & or &&). */
3576 #define FUNCTION_REF_QUALIFIED(NODE) \
3577 TREE_LANG_FLAG_4 (FUNC_OR_METHOD_CHECK (NODE))
3579 /* 1 iff FUNCTION_TYPE or METHOD_TYPE has &&-ref-qualifier. */
3580 #define FUNCTION_RVALUE_QUALIFIED(NODE) \
3581 TREE_LANG_FLAG_5 (FUNC_OR_METHOD_CHECK (NODE))
3583 /* 1 iff NODE is function-local, but for types. */
3584 #define LOCAL_CLASS_P(NODE) \
3585 (decl_function_context (TYPE_MAIN_DECL (NODE)) != NULL_TREE)
3587 /* The nesting depth of namespace, class or function. Makes is_ancestor much
3588 simpler. Only 8 bits available. */
3589 #define SCOPE_DEPTH(NODE) \
3590 (NAMESPACE_DECL_CHECK (NODE)->base.u.bits.address_space)
3592 /* Whether the namepace is an inline namespace. */
3593 #define DECL_NAMESPACE_INLINE_P(NODE) \
3594 TREE_LANG_FLAG_0 (NAMESPACE_DECL_CHECK (NODE))
3596 /* In a NAMESPACE_DECL, a vector of inline namespaces. */
3597 #define DECL_NAMESPACE_INLINEES(NODE) \
3598 (LANG_DECL_NS_CHECK (NODE)->inlinees)
3600 /* Pointer to hash_map from IDENTIFIERS to DECLS */
3601 #define DECL_NAMESPACE_BINDINGS(NODE) \
3602 (LANG_DECL_NS_CHECK (NODE)->bindings)
3604 /* In a NAMESPACE_DECL, points to the original namespace if this is
3605 a namespace alias. */
3606 #define DECL_NAMESPACE_ALIAS(NODE) \
3607 DECL_ABSTRACT_ORIGIN (NAMESPACE_DECL_CHECK (NODE))
3608 #define ORIGINAL_NAMESPACE(NODE) \
3609 (DECL_NAMESPACE_ALIAS (NODE) ? DECL_NAMESPACE_ALIAS (NODE) : (NODE))
3611 /* Nonzero if NODE is the std namespace. */
3612 #define DECL_NAMESPACE_STD_P(NODE) \
3613 ((NODE) == std_node)
3615 /* In a TREE_LIST in an attribute list, indicates that the attribute
3616 must be applied at instantiation time. */
3617 #define ATTR_IS_DEPENDENT(NODE) TREE_LANG_FLAG_0 (TREE_LIST_CHECK (NODE))
3619 /* In a TREE_LIST in the argument of attribute abi_tag, indicates that the tag
3620 was inherited from a template parameter, not explicitly indicated. */
3621 #define ABI_TAG_IMPLICIT(NODE) TREE_LANG_FLAG_0 (TREE_LIST_CHECK (NODE))
3623 /* In a TREE_LIST for a parameter-declaration-list, indicates that all the
3624 parameters in the list have declarators enclosed in (). */
3625 #define PARENTHESIZED_LIST_P(NODE) TREE_LANG_FLAG_0 (TREE_LIST_CHECK (NODE))
3627 /* Non zero if this is a using decl for a dependent scope. */
3628 #define DECL_DEPENDENT_P(NODE) DECL_LANG_FLAG_0 (USING_DECL_CHECK (NODE))
3630 /* The scope named in a using decl. */
3631 #define USING_DECL_SCOPE(NODE) DECL_RESULT_FLD (USING_DECL_CHECK (NODE))
3633 /* The decls named by a using decl. */
3634 #define USING_DECL_DECLS(NODE) DECL_INITIAL (USING_DECL_CHECK (NODE))
3636 /* Non zero if the using decl refers to a dependent type. */
3637 #define USING_DECL_TYPENAME_P(NODE) DECL_LANG_FLAG_1 (USING_DECL_CHECK (NODE))
3639 /* True if member using decl NODE refers to a non-inherited NODE. */
3640 #define USING_DECL_UNRELATED_P(NODE) DECL_LANG_FLAG_2 (USING_DECL_CHECK (NODE))
3642 /* True iff the CONST_DECL is a class-scope clone from C++20 using enum,
3643 created by handle_using_decl. */
3644 #define CONST_DECL_USING_P(NODE) \
3645 (TREE_CODE (NODE) == CONST_DECL \
3646 && TREE_TYPE (NODE) \
3647 && TREE_CODE (TREE_TYPE (NODE)) == ENUMERAL_TYPE \
3648 && DECL_CONTEXT (NODE) != TREE_TYPE (NODE))
3650 /* In a FUNCTION_DECL, this is nonzero if this function was defined in
3651 the class definition. We have saved away the text of the function,
3652 but have not yet processed it. */
3653 #define DECL_PENDING_INLINE_P(NODE) \
3654 (LANG_DECL_FN_CHECK (NODE)->pending_inline_p)
3656 /* If DECL_PENDING_INLINE_P holds, this is the saved text of the
3657 function. */
3658 #define DECL_PENDING_INLINE_INFO(NODE) \
3659 (LANG_DECL_FN_CHECK (NODE)->u.pending_inline_info)
3661 /* Nonzero for TYPE_DECL means that it was written 'using name = type'. */
3662 #define TYPE_DECL_ALIAS_P(NODE) \
3663 DECL_LANG_FLAG_6 (TYPE_DECL_CHECK (NODE))
3665 /* Nonzero for TEMPLATE_DECL means that it is a 'complex' alias template. */
3666 #define TEMPLATE_DECL_COMPLEX_ALIAS_P(NODE) \
3667 DECL_LANG_FLAG_2 (TEMPLATE_DECL_CHECK (NODE))
3669 /* Nonzero for a type which is an alias for another type; i.e, a type
3670 which declaration was written 'using name-of-type =
3671 another-type'. */
3672 #define TYPE_ALIAS_P(NODE) \
3673 (TYPE_P (NODE) \
3674 && TYPE_NAME (NODE) \
3675 && TREE_CODE (TYPE_NAME (NODE)) == TYPE_DECL \
3676 && TYPE_DECL_ALIAS_P (TYPE_NAME (NODE)))
3678 /* If non-NULL for a VAR_DECL, FUNCTION_DECL, TYPE_DECL, TEMPLATE_DECL,
3679 or CONCEPT_DECL, the entity is either a template specialization (if
3680 DECL_USE_TEMPLATE is nonzero) or the abstract instance of the
3681 template itself.
3683 In either case, DECL_TEMPLATE_INFO is a TEMPLATE_INFO, whose
3684 TI_TEMPLATE is the TEMPLATE_DECL of which this entity is a
3685 specialization or abstract instance. The TI_ARGS is the
3686 template arguments used to specialize the template.
3688 Consider:
3690 template <typename T> struct S { friend void f(T) {} };
3692 In this case, S<int>::f is, from the point of view of the compiler,
3693 an instantiation of a template -- but, from the point of view of
3694 the language, each instantiation of S results in a wholly unrelated
3695 global function f. In this case, DECL_TEMPLATE_INFO for S<int>::f
3696 will be non-NULL, but DECL_USE_TEMPLATE will be zero.
3698 In a friend declaration, TI_TEMPLATE can be an overload set, or
3699 identifier. */
3700 #define DECL_TEMPLATE_INFO(NODE) \
3701 (DECL_LANG_SPECIFIC (TEMPLATE_INFO_DECL_CHECK (NODE)) \
3702 ->u.min.template_info)
3704 /* For a lambda capture proxy, its captured variable. */
3705 #define DECL_CAPTURED_VARIABLE(NODE) \
3706 (LANG_DECL_MIN_CHECK (NODE)->access)
3708 /* For a VAR_DECL, indicates that the variable is actually a
3709 non-static data member of anonymous union that has been promoted to
3710 variable status. */
3711 #define DECL_ANON_UNION_VAR_P(NODE) \
3712 (DECL_LANG_FLAG_4 (VAR_DECL_CHECK (NODE)))
3714 /* Template information for a RECORD_TYPE or UNION_TYPE. */
3715 #define CLASSTYPE_TEMPLATE_INFO(NODE) \
3716 (TYPE_LANG_SLOT_1 (RECORD_OR_UNION_CHECK (NODE)))
3718 /* Template information for a template template parameter. */
3719 #define TEMPLATE_TEMPLATE_PARM_TEMPLATE_INFO(NODE) \
3720 (TYPE_LANG_SLOT_1 (BOUND_TEMPLATE_TEMPLATE_PARM_TYPE_CHECK (NODE)))
3722 /* Template information for an ENUMERAL_, RECORD_, UNION_TYPE, or
3723 BOUND_TEMPLATE_TEMPLATE_PARM type. This ignores any alias
3724 templateness of NODE. It'd be nice if this could unconditionally
3725 access the slot, rather than return NULL if given a
3726 non-templatable type. */
3727 #define TYPE_TEMPLATE_INFO(NODE) \
3728 (TREE_CODE (NODE) == ENUMERAL_TYPE \
3729 || TREE_CODE (NODE) == BOUND_TEMPLATE_TEMPLATE_PARM \
3730 || RECORD_OR_UNION_TYPE_P (NODE) \
3731 ? TYPE_LANG_SLOT_1 (NODE) : NULL_TREE)
3733 /* Template information (if any) for an alias type. */
3734 #define TYPE_ALIAS_TEMPLATE_INFO(NODE) \
3735 (DECL_LANG_SPECIFIC (TYPE_NAME (NODE)) \
3736 ? DECL_TEMPLATE_INFO (TYPE_NAME (NODE)) \
3737 : NULL_TREE)
3739 /* If NODE is a type alias, this accessor returns the template info
3740 for the alias template (if any). Otherwise behave as
3741 TYPE_TEMPLATE_INFO. */
3742 #define TYPE_TEMPLATE_INFO_MAYBE_ALIAS(NODE) \
3743 (typedef_variant_p (NODE) \
3744 ? TYPE_ALIAS_TEMPLATE_INFO (NODE) \
3745 : TYPE_TEMPLATE_INFO (NODE))
3747 /* Set the template information for a non-alias n ENUMERAL_, RECORD_,
3748 or UNION_TYPE to VAL. ALIAS's are dealt with separately. */
3749 #define SET_TYPE_TEMPLATE_INFO(NODE, VAL) \
3750 (TREE_CODE (NODE) == ENUMERAL_TYPE \
3751 || (CLASS_TYPE_P (NODE) && !TYPE_ALIAS_P (NODE)) \
3752 ? (TYPE_LANG_SLOT_1 (NODE) = (VAL)) \
3753 : (DECL_TEMPLATE_INFO (TYPE_NAME (NODE)) = (VAL))) \
3755 #define TI_TEMPLATE(NODE) \
3756 ((struct tree_template_info*)TEMPLATE_INFO_CHECK (NODE))->tmpl
3757 #define TI_ARGS(NODE) \
3758 ((struct tree_template_info*)TEMPLATE_INFO_CHECK (NODE))->args
3759 #define TI_PENDING_TEMPLATE_FLAG(NODE) \
3760 TREE_LANG_FLAG_1 (TEMPLATE_INFO_CHECK (NODE))
3762 /* For a class or variable template specialization, this contains the
3763 TEMPLATE_INFO result of most_specialized_partial_spec, i.e. the selected
3764 partial template specialization and arguments relative to it. */
3765 #define TI_PARTIAL_INFO(NODE) \
3766 (gcc_checking_assert (PRIMARY_TEMPLATE_P (TI_TEMPLATE (NODE))), \
3767 ((struct tree_template_info*)NODE)->partial)
3769 /* For a given TREE_VEC containing a template argument list,
3770 this property contains the number of arguments that are not
3771 defaulted. */
3772 #define NON_DEFAULT_TEMPLATE_ARGS_COUNT(NODE) \
3773 TREE_CHAIN (TREE_VEC_CHECK (NODE))
3775 /* Below are the setter and getter of the NON_DEFAULT_TEMPLATE_ARGS_COUNT
3776 property. */
3777 #define SET_NON_DEFAULT_TEMPLATE_ARGS_COUNT(NODE, INT_VALUE) \
3778 NON_DEFAULT_TEMPLATE_ARGS_COUNT(NODE) = build_int_cst (NULL_TREE, INT_VALUE)
3779 #if CHECKING_P
3780 #define GET_NON_DEFAULT_TEMPLATE_ARGS_COUNT(NODE) \
3781 int_cst_value (NON_DEFAULT_TEMPLATE_ARGS_COUNT (NODE))
3782 #else
3783 #define GET_NON_DEFAULT_TEMPLATE_ARGS_COUNT(NODE) \
3784 NON_DEFAULT_TEMPLATE_ARGS_COUNT (NODE) \
3785 ? int_cst_value (NON_DEFAULT_TEMPLATE_ARGS_COUNT (NODE)) \
3786 : TREE_VEC_LENGTH (INNERMOST_TEMPLATE_ARGS (NODE))
3787 #endif
3789 /* The list of access checks that were deferred during parsing
3790 which need to be performed at template instantiation time.
3792 FIXME this should be associated with the TEMPLATE_DECL, not the
3793 TEMPLATE_INFO. */
3794 #define TI_DEFERRED_ACCESS_CHECKS(NODE) \
3795 ((struct tree_template_info*)TEMPLATE_INFO_CHECK \
3796 (NODE))->deferred_access_checks
3798 /* We use TREE_VECs to hold template arguments. If there is only one
3799 level of template arguments, then the TREE_VEC contains the
3800 arguments directly. If there is more than one level of template
3801 arguments, then each entry in the TREE_VEC is itself a TREE_VEC,
3802 containing the template arguments for a single level. The first
3803 entry in the outer TREE_VEC is the outermost level of template
3804 parameters; the last is the innermost.
3806 It is incorrect to ever form a template argument vector containing
3807 only one level of arguments, but which is a TREE_VEC containing as
3808 its only entry the TREE_VEC for that level.
3810 For each TREE_VEC containing the template arguments for a single
3811 level, it's possible to get or set the number of non defaulted
3812 template arguments by using the accessor macros
3813 GET_NON_DEFAULT_TEMPLATE_ARGS_COUNT or
3814 SET_NON_DEFAULT_TEMPLATE_ARGS_COUNT. */
3816 /* Nonzero if the template arguments is actually a vector of vectors,
3817 rather than just a vector. */
3818 #define TMPL_ARGS_HAVE_MULTIPLE_LEVELS(NODE) \
3819 (NODE && TREE_VEC_LENGTH (NODE) && TREE_VEC_ELT (NODE, 0) \
3820 && TREE_CODE (TREE_VEC_ELT (NODE, 0)) == TREE_VEC)
3822 /* The depth of a template argument vector. When called directly by
3823 the parser, we use a TREE_LIST rather than a TREE_VEC to represent
3824 template arguments. In that case, there is only one level of template
3825 arguments. We may even see NULL_TREE if there are 0 levels of
3826 template arguments, as in cp_parser_requires_expression. */
3827 #define TMPL_ARGS_DEPTH(NODE) \
3828 ((NODE) == NULL_TREE ? 0 \
3829 : TMPL_ARGS_HAVE_MULTIPLE_LEVELS (NODE) ? TREE_VEC_LENGTH (NODE) \
3830 : 1)
3832 /* The LEVELth level of the template ARGS. The outermost level of
3833 args is level 1, not level 0. */
3834 #define TMPL_ARGS_LEVEL(ARGS, LEVEL) \
3835 (TMPL_ARGS_HAVE_MULTIPLE_LEVELS (ARGS) \
3836 ? TREE_VEC_ELT (ARGS, (LEVEL) - 1) \
3837 : (gcc_checking_assert ((LEVEL) == 1), (ARGS)))
3839 /* Set the LEVELth level of the template ARGS to VAL. This macro does
3840 not work with single-level argument vectors. */
3841 #define SET_TMPL_ARGS_LEVEL(ARGS, LEVEL, VAL) \
3842 (TREE_VEC_ELT (ARGS, (LEVEL) - 1) = (VAL))
3844 /* Accesses the IDXth parameter in the LEVELth level of the ARGS. */
3845 #define TMPL_ARG(ARGS, LEVEL, IDX) \
3846 (TREE_VEC_ELT (TMPL_ARGS_LEVEL (ARGS, LEVEL), IDX))
3848 /* Given a single level of template arguments in NODE, return the
3849 number of arguments. */
3850 #define NUM_TMPL_ARGS(NODE) \
3851 (TREE_VEC_LENGTH (NODE))
3853 /* Returns the innermost level of template arguments in ARGS. */
3854 #define INNERMOST_TEMPLATE_ARGS(NODE) \
3855 (get_innermost_template_args ((NODE), 1))
3857 /* The number of levels of template parameters given by NODE. */
3858 #define TMPL_PARMS_DEPTH(NODE) \
3859 ((HOST_WIDE_INT) TREE_INT_CST_LOW (TREE_PURPOSE (NODE)))
3861 /* The TEMPLATE_DECL instantiated or specialized by NODE. This
3862 TEMPLATE_DECL will be the immediate parent, not the most general
3863 template. For example, in:
3865 template <class T> struct S { template <class U> void f(U); }
3867 the FUNCTION_DECL for S<int>::f<double> will have, as its
3868 DECL_TI_TEMPLATE, `template <class U> S<int>::f<U>'.
3870 As a special case, for a member friend template of a template
3871 class, this value will not be a TEMPLATE_DECL, but rather an
3872 IDENTIFIER_NODE or OVERLOAD indicating the name of the template and
3873 any explicit template arguments provided. For example, in:
3875 template <class T> struct S { friend void f<int>(int, double); }
3877 the DECL_TI_TEMPLATE will be an IDENTIFIER_NODE for `f' and the
3878 DECL_TI_ARGS will be {int}.
3880 For a FIELD_DECL with a non-static data member initializer, this value
3881 is the FIELD_DECL it was instantiated from. */
3882 #define DECL_TI_TEMPLATE(NODE) TI_TEMPLATE (DECL_TEMPLATE_INFO (NODE))
3884 /* The template arguments used to obtain this decl from the most
3885 general form of DECL_TI_TEMPLATE. For the example given for
3886 DECL_TI_TEMPLATE, the DECL_TI_ARGS will be {int, double}. These
3887 are always the full set of arguments required to instantiate this
3888 declaration from the most general template specialized here. */
3889 #define DECL_TI_ARGS(NODE) TI_ARGS (DECL_TEMPLATE_INFO (NODE))
3891 /* The TEMPLATE_DECL associated with NODE, a class type. Even if NODE
3892 will be generated from a partial specialization, the TEMPLATE_DECL
3893 referred to here will be the original template. For example,
3894 given:
3896 template <typename T> struct S {};
3897 template <typename T> struct S<T*> {};
3899 the CLASSTYPE_TI_TEMPLATE for S<int*> will be S, not the S<T*>.
3901 For a member class template, CLASSTYPE_TI_TEMPLATE always refers to the
3902 partial instantiation rather than the primary template. CLASSTYPE_TI_ARGS
3903 are for the primary template if the partial instantiation isn't
3904 specialized, or for the explicit specialization if it is, e.g.
3906 template <class T> class C { template <class U> class D; }
3907 template <> template <class U> class C<int>::D; */
3908 #define CLASSTYPE_TI_TEMPLATE(NODE) TI_TEMPLATE (CLASSTYPE_TEMPLATE_INFO (NODE))
3909 #define CLASSTYPE_TI_ARGS(NODE) TI_ARGS (CLASSTYPE_TEMPLATE_INFO (NODE))
3911 /* For a template instantiation TYPE, returns the TYPE corresponding
3912 to the primary template. Otherwise returns TYPE itself. */
3913 #define CLASSTYPE_PRIMARY_TEMPLATE_TYPE(TYPE) \
3914 ((CLASSTYPE_USE_TEMPLATE ((TYPE)) \
3915 && !CLASSTYPE_TEMPLATE_SPECIALIZATION ((TYPE))) \
3916 ? TREE_TYPE (DECL_TEMPLATE_RESULT (DECL_PRIMARY_TEMPLATE \
3917 (CLASSTYPE_TI_TEMPLATE ((TYPE))))) \
3918 : (TYPE))
3920 /* Like CLASS_TI_TEMPLATE, but also works for ENUMERAL_TYPEs. */
3921 #define TYPE_TI_TEMPLATE(NODE) \
3922 (TI_TEMPLATE (TYPE_TEMPLATE_INFO (NODE)))
3924 /* Like DECL_TI_ARGS, but for an ENUMERAL_, RECORD_, or UNION_TYPE. */
3925 #define TYPE_TI_ARGS(NODE) \
3926 (TI_ARGS (TYPE_TEMPLATE_INFO (NODE)))
3928 #define INNERMOST_TEMPLATE_PARMS(NODE) TREE_VALUE (NODE)
3930 /* Nonzero if NODE (a TEMPLATE_DECL) is a member template, in the
3931 sense of [temp.mem]. */
3932 #define DECL_MEMBER_TEMPLATE_P(NODE) \
3933 (DECL_LANG_FLAG_1 (TEMPLATE_DECL_CHECK (NODE)))
3935 /* Nonzero if the NODE corresponds to the template parameters for a
3936 member template, whose inline definition is being processed after
3937 the class definition is complete. */
3938 #define TEMPLATE_PARMS_FOR_INLINE(NODE) TREE_LANG_FLAG_1 (NODE)
3940 /* Determine if a declaration (PARM_DECL or FIELD_DECL) is a pack. */
3941 #define DECL_PACK_P(NODE) \
3942 (DECL_P (NODE) && PACK_EXPANSION_P (TREE_TYPE (NODE)))
3944 /* Determines if NODE is an expansion of one or more parameter packs,
3945 e.g., a TYPE_PACK_EXPANSION or EXPR_PACK_EXPANSION. */
3946 #define PACK_EXPANSION_P(NODE) \
3947 (TREE_CODE (NODE) == TYPE_PACK_EXPANSION \
3948 || TREE_CODE (NODE) == EXPR_PACK_EXPANSION)
3950 #define PACK_EXPANSION_CHECK(NODE) \
3951 TREE_CHECK2 (NODE, TYPE_PACK_EXPANSION, EXPR_PACK_EXPANSION)
3953 /* Extracts the type or expression pattern from a TYPE_PACK_EXPANSION or
3954 EXPR_PACK_EXPANSION. */
3955 #define PACK_EXPANSION_PATTERN(NODE) \
3956 (TREE_CODE (PACK_EXPANSION_CHECK (NODE)) == TYPE_PACK_EXPANSION \
3957 ? TREE_TYPE (NODE) : TREE_OPERAND (NODE, 0))
3959 /* The list of parameter packs used in the PACK_EXPANSION_* node. The
3960 TREE_VALUE of each TREE_LIST contains the parameter packs. */
3961 #define PACK_EXPANSION_PARAMETER_PACKS(NODE) \
3962 *(TREE_CODE (PACK_EXPANSION_CHECK (NODE)) == EXPR_PACK_EXPANSION \
3963 ? &TREE_OPERAND (NODE, 1) \
3964 : &TYPE_MIN_VALUE_RAW (TYPE_PACK_EXPANSION_CHECK (NODE)))
3966 /* Any additional template args to be applied when substituting into
3967 the pattern, set by tsubst_pack_expansion for partial instantiations.
3968 If this is a TREE_LIST, the TREE_VALUE of the first element is the
3969 usual template argument TREE_VEC, and the TREE_PURPOSE of later elements
3970 are enclosing functions that provided function parameter packs we'll need
3971 to map appropriately. */
3972 #define PACK_EXPANSION_EXTRA_ARGS(NODE) \
3973 *(TREE_CODE (PACK_EXPANSION_CHECK (NODE)) == TYPE_PACK_EXPANSION \
3974 ? &TYPE_MAX_VALUE_RAW (NODE) \
3975 : &TREE_OPERAND ((NODE), 2))
3977 /* True iff this pack expansion is within a function context. */
3978 #define PACK_EXPANSION_LOCAL_P(NODE) \
3979 TREE_LANG_FLAG_0 (PACK_EXPANSION_CHECK (NODE))
3981 /* True iff this pack expansion is for sizeof.... */
3982 #define PACK_EXPANSION_SIZEOF_P(NODE) \
3983 TREE_LANG_FLAG_1 (PACK_EXPANSION_CHECK (NODE))
3985 /* True iff this pack expansion is for auto... in lambda init-capture. */
3986 #define PACK_EXPANSION_AUTO_P(NODE) \
3987 TREE_LANG_FLAG_2 (PACK_EXPANSION_CHECK (NODE))
3989 /* True if we must use PACK_EXPANSION_EXTRA_ARGS and avoid partial
3990 instantiation of this pack expansion. */
3991 #define PACK_EXPANSION_FORCE_EXTRA_ARGS_P(NODE) \
3992 TREE_LANG_FLAG_3 (PACK_EXPANSION_CHECK (NODE))
3994 /* True iff the wildcard can match a template parameter pack. */
3995 #define WILDCARD_PACK_P(NODE) TREE_LANG_FLAG_0 (NODE)
3997 /* Determine if this is an argument pack. */
3998 #define ARGUMENT_PACK_P(NODE) \
3999 (TREE_CODE (NODE) == TYPE_ARGUMENT_PACK \
4000 || TREE_CODE (NODE) == NONTYPE_ARGUMENT_PACK)
4002 #define ARGUMENT_PACK_CHECK(NODE) \
4003 TREE_CHECK2 (NODE, TYPE_ARGUMENT_PACK, NONTYPE_ARGUMENT_PACK)
4005 /* The arguments stored in an argument pack. Arguments are stored in a
4006 TREE_VEC, which may have length zero. */
4007 #define ARGUMENT_PACK_ARGS(NODE) \
4008 (TREE_CODE (ARGUMENT_PACK_CHECK (NODE)) == TYPE_ARGUMENT_PACK \
4009 ? TREE_TYPE (NODE) : TREE_OPERAND (NODE, 0))
4011 /* Whether the argument pack is "incomplete", meaning that more
4012 arguments can still be deduced. Incomplete argument packs are only
4013 used when the user has provided an explicit template argument list
4014 for a variadic function template. Some of the explicit template
4015 arguments will be placed into the beginning of the argument pack,
4016 but additional arguments might still be deduced. */
4017 #define ARGUMENT_PACK_INCOMPLETE_P(NODE) \
4018 TREE_ADDRESSABLE (ARGUMENT_PACK_ARGS (NODE))
4020 /* When ARGUMENT_PACK_INCOMPLETE_P, stores the explicit template
4021 arguments used to fill this pack. */
4022 #define ARGUMENT_PACK_EXPLICIT_ARGS(NODE) \
4023 TREE_TYPE (ARGUMENT_PACK_ARGS (NODE))
4025 /* In an ARGUMENT_PACK_SELECT, the argument pack from which an
4026 argument will be selected. */
4027 #define ARGUMENT_PACK_SELECT_FROM_PACK(NODE) \
4028 (((struct tree_argument_pack_select *)ARGUMENT_PACK_SELECT_CHECK (NODE))->argument_pack)
4030 /* In an ARGUMENT_PACK_SELECT, the index of the argument we want to
4031 select. */
4032 #define ARGUMENT_PACK_SELECT_INDEX(NODE) \
4033 (((struct tree_argument_pack_select *)ARGUMENT_PACK_SELECT_CHECK (NODE))->index)
4035 #define FOLD_EXPR_CHECK(NODE) \
4036 TREE_CHECK4 (NODE, UNARY_LEFT_FOLD_EXPR, UNARY_RIGHT_FOLD_EXPR, \
4037 BINARY_LEFT_FOLD_EXPR, BINARY_RIGHT_FOLD_EXPR)
4039 #define BINARY_FOLD_EXPR_CHECK(NODE) \
4040 TREE_CHECK2 (NODE, BINARY_LEFT_FOLD_EXPR, BINARY_RIGHT_FOLD_EXPR)
4042 /* True if NODE is UNARY_FOLD_EXPR or a BINARY_FOLD_EXPR */
4043 #define FOLD_EXPR_P(NODE) \
4044 (TREE_CODE (NODE) == UNARY_LEFT_FOLD_EXPR \
4045 || TREE_CODE (NODE) == UNARY_RIGHT_FOLD_EXPR \
4046 || TREE_CODE (NODE) == BINARY_LEFT_FOLD_EXPR \
4047 || TREE_CODE (NODE) == BINARY_RIGHT_FOLD_EXPR)
4049 /* True when NODE is a fold over a compound assignment operator. */
4050 #define FOLD_EXPR_MODIFY_P(NODE) \
4051 TREE_LANG_FLAG_0 (FOLD_EXPR_CHECK (NODE))
4053 /* An INTEGER_CST containing the tree code of the folded operator. */
4054 #define FOLD_EXPR_OP_RAW(NODE) \
4055 TREE_OPERAND (FOLD_EXPR_CHECK (NODE), 0)
4057 /* The tree code of the folded operator. */
4058 #define FOLD_EXPR_OP(NODE) \
4059 ((enum tree_code) TREE_INT_CST_LOW (FOLD_EXPR_OP_RAW (NODE)))
4061 /* The expression containing an unexpanded parameter pack. */
4062 #define FOLD_EXPR_PACK(NODE) \
4063 TREE_OPERAND (FOLD_EXPR_CHECK (NODE), 1)
4065 /* In a binary fold expression, the argument with no unexpanded
4066 parameter packs. */
4067 #define FOLD_EXPR_INIT(NODE) \
4068 TREE_OPERAND (BINARY_FOLD_EXPR_CHECK (NODE), 2)
4070 /* In a FUNCTION_DECL, the saved auto-return pattern. */
4071 #define DECL_SAVED_AUTO_RETURN_TYPE(NODE) \
4072 (LANG_DECL_FN_CHECK (FUNCTION_DECL_CHECK (NODE)) \
4073 ->u.saved_auto_return_type)
4075 /* In a RETURN_EXPR, whether the expression refers to the address
4076 of a local variable. */
4077 #define RETURN_EXPR_LOCAL_ADDR_P(NODE) \
4078 TREE_LANG_FLAG_0 (RETURN_EXPR_CHECK (NODE))
4080 /* True if NODE is an implicit INDIRECT_REF from convert_from_reference. */
4081 #define REFERENCE_REF_P(NODE) \
4082 (INDIRECT_REF_P (NODE) \
4083 && TREE_TYPE (TREE_OPERAND (NODE, 0)) \
4084 && TYPE_REF_P (TREE_TYPE (TREE_OPERAND ((NODE), 0))))
4086 /* True iff this represents an lvalue being treated as an rvalue during return
4087 or throw as per [class.copy.elision]. */
4088 #define IMPLICIT_RVALUE_P(NODE) \
4089 TREE_LANG_FLAG_3 (TREE_CHECK2 ((NODE), NON_LVALUE_EXPR, STATIC_CAST_EXPR))
4091 #define NEW_EXPR_USE_GLOBAL(NODE) \
4092 TREE_LANG_FLAG_0 (NEW_EXPR_CHECK (NODE))
4093 #define DELETE_EXPR_USE_GLOBAL(NODE) \
4094 TREE_LANG_FLAG_0 (DELETE_EXPR_CHECK (NODE))
4095 #define DELETE_EXPR_USE_VEC(NODE) \
4096 TREE_LANG_FLAG_1 (DELETE_EXPR_CHECK (NODE))
4098 /* True iff this represents returning a potential named return value. */
4099 #define INIT_EXPR_NRV_P(NODE) \
4100 TREE_LANG_FLAG_0 (INIT_EXPR_CHECK (NODE))
4102 #define CALL_OR_AGGR_INIT_CHECK(NODE) \
4103 TREE_CHECK2 ((NODE), CALL_EXPR, AGGR_INIT_EXPR)
4105 /* In a CALL_EXPR appearing in a template, true if Koenig lookup
4106 should be performed at instantiation time. */
4107 #define KOENIG_LOOKUP_P(NODE) TREE_LANG_FLAG_0 (CALL_EXPR_CHECK (NODE))
4109 /* True if the arguments to NODE should be evaluated in left-to-right
4110 order regardless of PUSH_ARGS_REVERSED. */
4111 #define CALL_EXPR_ORDERED_ARGS(NODE) \
4112 TREE_LANG_FLAG_3 (CALL_OR_AGGR_INIT_CHECK (NODE))
4114 /* True if the arguments to NODE should be evaluated in right-to-left
4115 order regardless of PUSH_ARGS_REVERSED. */
4116 #define CALL_EXPR_REVERSE_ARGS(NODE) \
4117 TREE_LANG_FLAG_5 (CALL_OR_AGGR_INIT_CHECK (NODE))
4119 /* True if CALL_EXPR was written as an operator expression, not a function
4120 call. */
4121 #define CALL_EXPR_OPERATOR_SYNTAX(NODE) \
4122 TREE_LANG_FLAG_6 (CALL_OR_AGGR_INIT_CHECK (NODE))
4124 /* A TREE_LIST containing the result of phase 1 name lookup of the operator
4125 overloads that are pertinent to the dependent operator expression whose
4126 type is NODE. Each TREE_PURPOSE is an IDENTIFIER_NODE and TREE_VALUE is
4127 the corresponding (possibly empty) lookup result. The TREE_TYPE of the
4128 first TREE_LIST node points back to NODE. */
4129 #define DEPENDENT_OPERATOR_TYPE_SAVED_LOOKUPS(NODE) \
4130 TYPE_VALUES_RAW (DEPENDENT_OPERATOR_TYPE_CHECK (NODE))
4132 /* Guarded helper for the above accessor macro that takes a (templated)
4133 operator expression instead of the type thereof. */
4134 inline tree
4135 templated_operator_saved_lookups (tree t)
4137 tree type = TREE_TYPE (EXPR_CHECK (t));
4138 if (type && TREE_CODE (type) == DEPENDENT_OPERATOR_TYPE)
4139 return DEPENDENT_OPERATOR_TYPE_SAVED_LOOKUPS (type);
4140 else
4141 return NULL_TREE;
4144 /* Indicates whether a string literal has been parenthesized. Such
4145 usages are disallowed in certain circumstances. */
4147 #define PAREN_STRING_LITERAL_P(NODE) \
4148 TREE_LANG_FLAG_0 (STRING_CST_CHECK (NODE))
4150 /* Indicates whether a COMPONENT_REF or a SCOPE_REF has been parenthesized, an
4151 INDIRECT_REF comes from parenthesizing a _DECL, or a PAREN_EXPR identifies a
4152 parenthesized initializer relevant for decltype(auto). Currently only set
4153 some of the time in C++14 mode. */
4155 #define REF_PARENTHESIZED_P(NODE) \
4156 TREE_LANG_FLAG_2 (TREE_CHECK5 ((NODE), COMPONENT_REF, INDIRECT_REF, SCOPE_REF, VIEW_CONVERT_EXPR, PAREN_EXPR))
4158 /* Nonzero if this AGGR_INIT_EXPR provides for initialization via a
4159 constructor call, rather than an ordinary function call. */
4160 #define AGGR_INIT_VIA_CTOR_P(NODE) \
4161 TREE_LANG_FLAG_0 (AGGR_INIT_EXPR_CHECK (NODE))
4163 /* Nonzero if expanding this AGGR_INIT_EXPR should first zero-initialize
4164 the object. */
4165 #define AGGR_INIT_ZERO_FIRST(NODE) \
4166 TREE_LANG_FLAG_2 (AGGR_INIT_EXPR_CHECK (NODE))
4168 /* Nonzero means that the call is the jump from a thunk to the
4169 thunked-to function. */
4170 #define AGGR_INIT_FROM_THUNK_P(NODE) \
4171 (AGGR_INIT_EXPR_CHECK (NODE)->base.protected_flag)
4173 /* AGGR_INIT_EXPR accessors. These are equivalent to the CALL_EXPR
4174 accessors, except for AGGR_INIT_EXPR_SLOT (which takes the place of
4175 CALL_EXPR_STATIC_CHAIN). */
4177 #define AGGR_INIT_EXPR_FN(NODE) TREE_OPERAND (AGGR_INIT_EXPR_CHECK (NODE), 1)
4178 #define AGGR_INIT_EXPR_SLOT(NODE) \
4179 TREE_OPERAND (AGGR_INIT_EXPR_CHECK (NODE), 2)
4180 #define AGGR_INIT_EXPR_ARG(NODE, I) \
4181 TREE_OPERAND (AGGR_INIT_EXPR_CHECK (NODE), (I) + 3)
4182 #define aggr_init_expr_nargs(NODE) (VL_EXP_OPERAND_LENGTH(NODE) - 3)
4184 /* AGGR_INIT_EXPR_ARGP returns a pointer to the argument vector for NODE.
4185 We can't use &AGGR_INIT_EXPR_ARG (NODE, 0) because that will complain if
4186 the argument count is zero when checking is enabled. Instead, do
4187 the pointer arithmetic to advance past the 3 fixed operands in a
4188 AGGR_INIT_EXPR. That produces a valid pointer to just past the end of
4189 the operand array, even if it's not valid to dereference it. */
4190 #define AGGR_INIT_EXPR_ARGP(NODE) \
4191 (&(TREE_OPERAND (AGGR_INIT_EXPR_CHECK (NODE), 0)) + 3)
4193 /* Abstract iterators for AGGR_INIT_EXPRs. */
4195 /* Structure containing iterator state. */
4196 struct aggr_init_expr_arg_iterator {
4197 tree t; /* the aggr_init_expr */
4198 int n; /* argument count */
4199 int i; /* next argument index */
4202 /* Initialize the abstract argument list iterator object ITER with the
4203 arguments from AGGR_INIT_EXPR node EXP. */
4204 inline void
4205 init_aggr_init_expr_arg_iterator (tree exp,
4206 aggr_init_expr_arg_iterator *iter)
4208 iter->t = exp;
4209 iter->n = aggr_init_expr_nargs (exp);
4210 iter->i = 0;
4213 /* Return the next argument from abstract argument list iterator object ITER,
4214 and advance its state. Return NULL_TREE if there are no more arguments. */
4215 inline tree
4216 next_aggr_init_expr_arg (aggr_init_expr_arg_iterator *iter)
4218 tree result;
4219 if (iter->i >= iter->n)
4220 return NULL_TREE;
4221 result = AGGR_INIT_EXPR_ARG (iter->t, iter->i);
4222 iter->i++;
4223 return result;
4226 /* Initialize the abstract argument list iterator object ITER, then advance
4227 past and return the first argument. Useful in for expressions, e.g.
4228 for (arg = first_aggr_init_expr_arg (exp, &iter); arg;
4229 arg = next_aggr_init_expr_arg (&iter)) */
4230 inline tree
4231 first_aggr_init_expr_arg (tree exp, aggr_init_expr_arg_iterator *iter)
4233 init_aggr_init_expr_arg_iterator (exp, iter);
4234 return next_aggr_init_expr_arg (iter);
4237 /* Test whether there are more arguments in abstract argument list iterator
4238 ITER, without changing its state. */
4239 inline bool
4240 more_aggr_init_expr_args_p (const aggr_init_expr_arg_iterator *iter)
4242 return (iter->i < iter->n);
4245 /* Iterate through each argument ARG of AGGR_INIT_EXPR CALL, using variable
4246 ITER (of type aggr_init_expr_arg_iterator) to hold the iteration state. */
4247 #define FOR_EACH_AGGR_INIT_EXPR_ARG(arg, iter, call) \
4248 for ((arg) = first_aggr_init_expr_arg ((call), &(iter)); (arg); \
4249 (arg) = next_aggr_init_expr_arg (&(iter)))
4251 /* We have an expression tree T that represents a call, either CALL_EXPR
4252 or AGGR_INIT_EXPR. Return a reference to the Nth argument. */
4254 inline tree&
4255 get_nth_callarg (tree t, int n)
4257 switch (TREE_CODE (t))
4259 case CALL_EXPR:
4260 return CALL_EXPR_ARG (t, n);
4262 case AGGR_INIT_EXPR:
4263 return AGGR_INIT_EXPR_ARG (t, n);
4265 default:
4266 gcc_unreachable ();
4270 /* VEC_INIT_EXPR accessors. */
4271 #define VEC_INIT_EXPR_SLOT(NODE) TREE_OPERAND (VEC_INIT_EXPR_CHECK (NODE), 0)
4272 #define VEC_INIT_EXPR_INIT(NODE) TREE_OPERAND (VEC_INIT_EXPR_CHECK (NODE), 1)
4274 /* Indicates that a VEC_INIT_EXPR is a potential constant expression.
4275 Only set when the current function is constexpr. */
4276 #define VEC_INIT_EXPR_IS_CONSTEXPR(NODE) \
4277 TREE_LANG_FLAG_0 (VEC_INIT_EXPR_CHECK (NODE))
4279 /* Indicates that a VEC_INIT_EXPR is expressing value-initialization. */
4280 #define VEC_INIT_EXPR_VALUE_INIT(NODE) \
4281 TREE_LANG_FLAG_1 (VEC_INIT_EXPR_CHECK (NODE))
4283 /* If T is a VEC_INIT_EXPR, return it, possibly stripping a TARGET_EXPR
4284 wrapper. Otherwise, return null. */
4285 inline tree
4286 get_vec_init_expr (tree t)
4288 if (t && TREE_CODE (t) == TARGET_EXPR)
4289 t = TARGET_EXPR_INITIAL (t);
4290 if (t && TREE_CODE (t) == VEC_INIT_EXPR)
4291 return t;
4292 return NULL_TREE;
4295 /* The condition under which this MUST_NOT_THROW_EXPR actually blocks
4296 exceptions. NULL_TREE means 'true'. */
4297 #define MUST_NOT_THROW_COND(NODE) \
4298 TREE_OPERAND (MUST_NOT_THROW_EXPR_CHECK (NODE), 1)
4300 /* The TYPE_MAIN_DECL for a class template type is a TYPE_DECL, not a
4301 TEMPLATE_DECL. This macro determines whether or not a given class
4302 type is really a template type, as opposed to an instantiation or
4303 specialization of one. */
4304 #define CLASSTYPE_IS_TEMPLATE(NODE) \
4305 (CLASSTYPE_TEMPLATE_INFO (NODE) \
4306 && !CLASSTYPE_USE_TEMPLATE (NODE) \
4307 && PRIMARY_TEMPLATE_P (CLASSTYPE_TI_TEMPLATE (NODE)))
4309 /* The name used by the user to name the typename type. Typically,
4310 this is an IDENTIFIER_NODE, and the same as the DECL_NAME on the
4311 corresponding TYPE_DECL. However, this may also be a
4312 TEMPLATE_ID_EXPR if we had something like `typename X::Y<T>'. */
4313 #define TYPENAME_TYPE_FULLNAME(NODE) \
4314 (TYPE_VALUES_RAW (TYPENAME_TYPE_CHECK (NODE)))
4316 /* True if a TYPENAME_TYPE was declared as an "enum". */
4317 #define TYPENAME_IS_ENUM_P(NODE) \
4318 (TREE_LANG_FLAG_0 (TYPENAME_TYPE_CHECK (NODE)))
4320 /* True if a TYPENAME_TYPE was declared as a "class", "struct", or
4321 "union". */
4322 #define TYPENAME_IS_CLASS_P(NODE) \
4323 (TREE_LANG_FLAG_1 (TYPENAME_TYPE_CHECK (NODE)))
4325 /* True if a TYPENAME_TYPE is in the process of being resolved. */
4326 #define TYPENAME_IS_RESOLVING_P(NODE) \
4327 (TREE_LANG_FLAG_2 (TYPENAME_TYPE_CHECK (NODE)))
4329 /* [class.virtual]
4331 A class that declares or inherits a virtual function is called a
4332 polymorphic class. */
4333 #define TYPE_POLYMORPHIC_P(NODE) (TREE_LANG_FLAG_2 (NODE))
4335 /* Nonzero if this class has a virtual function table pointer. */
4336 #define TYPE_CONTAINS_VPTR_P(NODE) \
4337 (TYPE_POLYMORPHIC_P (NODE) || CLASSTYPE_VBASECLASSES (NODE))
4339 /* Nonzero if NODE is a FUNCTION_DECL or VARIABLE_DECL (for a decl
4340 with namespace scope) declared in a local scope. */
4341 #define DECL_LOCAL_DECL_P(NODE) \
4342 DECL_LANG_FLAG_0 (VAR_OR_FUNCTION_DECL_CHECK (NODE))
4344 /* The namespace-scope decl a DECL_LOCAL_DECL_P aliases. */
4345 #define DECL_LOCAL_DECL_ALIAS(NODE) \
4346 DECL_ACCESS ((gcc_checking_assert (DECL_LOCAL_DECL_P (NODE)), NODE))
4348 /* True if NODE was declared with auto in its return type, but it has
4349 started compilation and so the return type might have been changed by
4350 return type deduction; its declared return type should be found in
4351 DECL_SAVED_AUTO_RETURN_TYPE (NODE). */
4352 #define FNDECL_USED_AUTO(NODE) \
4353 TREE_LANG_FLAG_2 (FUNCTION_DECL_CHECK (NODE))
4355 /* True if NODE is needed for a manifestly constant-evaluated expression.
4356 This doesn't especially need to be a flag, since currently it's only
4357 used for error recovery; if we run out of function flags it could move
4358 to an attribute. */
4359 #define FNDECL_MANIFESTLY_CONST_EVALUATED(NODE) \
4360 TREE_LANG_FLAG_4 (FUNCTION_DECL_CHECK (NODE))
4362 /* True for artificial decls added for OpenMP privatized non-static
4363 data members. */
4364 #define DECL_OMP_PRIVATIZED_MEMBER(NODE) \
4365 (DECL_LANG_SPECIFIC (VAR_DECL_CHECK (NODE))->u.base.anticipated_p)
4367 /* Nonzero if NODE is an artificial FUNCTION_DECL for
4368 #pragma omp declare reduction. */
4369 #define DECL_OMP_DECLARE_REDUCTION_P(NODE) \
4370 (LANG_DECL_FN_CHECK (DECL_COMMON_CHECK (NODE))->omp_declare_reduction_p)
4372 /* Nonzero if DECL has been declared threadprivate by
4373 #pragma omp threadprivate. */
4374 #define CP_DECL_THREADPRIVATE_P(DECL) \
4375 (DECL_LANG_SPECIFIC (VAR_DECL_CHECK (DECL))->u.base.threadprivate_or_deleted_p)
4377 /* Nonzero if NODE is a VAR_DECL which has been declared inline. */
4378 #define DECL_VAR_DECLARED_INLINE_P(NODE) \
4379 (DECL_LANG_SPECIFIC (VAR_DECL_CHECK (NODE)) \
4380 ? DECL_LANG_SPECIFIC (NODE)->u.base.var_declared_inline_p \
4381 : false)
4382 #define SET_DECL_VAR_DECLARED_INLINE_P(NODE) \
4383 (DECL_LANG_SPECIFIC (VAR_DECL_CHECK (NODE))->u.base.var_declared_inline_p \
4384 = true)
4386 /* True if NODE is a constant variable with a value-dependent initializer. */
4387 #define DECL_DEPENDENT_INIT_P(NODE) \
4388 (DECL_LANG_SPECIFIC (VAR_DECL_CHECK (NODE)) \
4389 && DECL_LANG_SPECIFIC (NODE)->u.base.dependent_init_p)
4390 #define SET_DECL_DEPENDENT_INIT_P(NODE, X) \
4391 (DECL_LANG_SPECIFIC (VAR_DECL_CHECK (NODE))->u.base.dependent_init_p = (X))
4393 /* Nonzero if NODE is an artificial VAR_DECL for a C++17 structured binding
4394 declaration or one of VAR_DECLs for the user identifiers in it. */
4395 #define DECL_DECOMPOSITION_P(NODE) \
4396 (VAR_P (NODE) && DECL_LANG_SPECIFIC (NODE) \
4397 ? DECL_LANG_SPECIFIC (NODE)->u.base.selector == lds_decomp \
4398 : false)
4400 /* The underlying artificial VAR_DECL for structured binding. */
4401 #define DECL_DECOMP_BASE(NODE) \
4402 (LANG_DECL_DECOMP_CHECK (NODE)->base)
4404 /* Nonzero if NODE is an inline VAR_DECL. In C++17, static data members
4405 declared with constexpr specifier are implicitly inline variables. */
4406 #define DECL_INLINE_VAR_P(NODE) \
4407 (DECL_VAR_DECLARED_INLINE_P (NODE) \
4408 || (cxx_dialect >= cxx17 \
4409 && DECL_DECLARED_CONSTEXPR_P (NODE) \
4410 && DECL_CLASS_SCOPE_P (NODE)))
4412 /* Nonzero if DECL was declared with '= delete'. */
4413 #define DECL_DELETED_FN(DECL) \
4414 (LANG_DECL_FN_CHECK (DECL)->min.base.threadprivate_or_deleted_p)
4416 /* Nonzero if DECL was declared with '= default' (maybe implicitly). */
4417 #define DECL_DEFAULTED_FN(DECL) \
4418 (LANG_DECL_FN_CHECK (DECL)->defaulted_p)
4420 /* Nonzero if DECL is explicitly defaulted in the class body. */
4421 #define DECL_DEFAULTED_IN_CLASS_P(DECL) \
4422 (DECL_DEFAULTED_FN (DECL) && DECL_INITIALIZED_IN_CLASS_P (DECL))
4423 /* Nonzero if DECL was defaulted outside the class body. */
4424 #define DECL_DEFAULTED_OUTSIDE_CLASS_P(DECL) \
4425 (DECL_DEFAULTED_FN (DECL) \
4426 && !(DECL_ARTIFICIAL (DECL) || DECL_INITIALIZED_IN_CLASS_P (DECL)))
4428 /* Record whether a typedef for type `int' was actually `signed int'. */
4429 #define C_TYPEDEF_EXPLICITLY_SIGNED(EXP) DECL_LANG_FLAG_1 (EXP)
4431 /* Returns nonzero if DECL has external linkage, as specified by the
4432 language standard. (This predicate may hold even when the
4433 corresponding entity is not actually given external linkage in the
4434 object file; see decl_linkage for details.) */
4435 #define DECL_EXTERNAL_LINKAGE_P(DECL) \
4436 (decl_linkage (DECL) == lk_external)
4438 /* Keep these codes in ascending code order. */
4440 #define INTEGRAL_CODE_P(CODE) \
4441 ((CODE) == ENUMERAL_TYPE \
4442 || (CODE) == BOOLEAN_TYPE \
4443 || (CODE) == INTEGER_TYPE)
4445 /* [basic.fundamental]
4447 Types bool, char, wchar_t, and the signed and unsigned integer types
4448 are collectively called integral types.
4450 Note that INTEGRAL_TYPE_P, as defined in tree.h, allows enumeration
4451 types as well, which is incorrect in C++. Keep these checks in
4452 ascending code order. */
4453 #define CP_INTEGRAL_TYPE_P(TYPE) \
4454 (TREE_CODE (TYPE) == BOOLEAN_TYPE \
4455 || TREE_CODE (TYPE) == INTEGER_TYPE)
4457 /* Returns true if TYPE is an integral or enumeration name. Keep
4458 these checks in ascending code order. */
4459 #define INTEGRAL_OR_ENUMERATION_TYPE_P(TYPE) \
4460 (TREE_CODE (TYPE) == ENUMERAL_TYPE || CP_INTEGRAL_TYPE_P (TYPE))
4462 /* Returns true if TYPE is an integral or unscoped enumeration type. */
4463 #define INTEGRAL_OR_UNSCOPED_ENUMERATION_TYPE_P(TYPE) \
4464 (UNSCOPED_ENUM_P (TYPE) || CP_INTEGRAL_TYPE_P (TYPE))
4466 /* True if the class type TYPE is a literal type. */
4467 #define CLASSTYPE_LITERAL_P(TYPE) \
4468 (LANG_TYPE_CLASS_CHECK (TYPE)->is_literal)
4470 /* [basic.fundamental]
4472 Integral and floating types are collectively called arithmetic
4473 types.
4475 As a GNU extension, we also accept complex types.
4477 Keep these checks in ascending code order. */
4478 #define ARITHMETIC_TYPE_P(TYPE) \
4479 (CP_INTEGRAL_TYPE_P (TYPE) \
4480 || SCALAR_FLOAT_TYPE_P (TYPE) \
4481 || TREE_CODE (TYPE) == COMPLEX_TYPE)
4483 /* [basic.types]
4485 Arithmetic types, enumeration types, pointer types,
4486 pointer-to-member types, and std::nullptr_t are collectively called
4487 scalar types.
4489 Keep these checks in ascending code order. */
4490 #define SCALAR_TYPE_P(TYPE) \
4491 (TYPE_PTRDATAMEM_P (TYPE) \
4492 || TREE_CODE (TYPE) == ENUMERAL_TYPE \
4493 || ARITHMETIC_TYPE_P (TYPE) \
4494 || TYPE_PTR_P (TYPE) \
4495 || TYPE_PTRMEMFUNC_P (TYPE) \
4496 || NULLPTR_TYPE_P (TYPE))
4498 /* Determines whether this type is a C++0x scoped enumeration
4499 type. Scoped enumerations types are introduced via "enum class" or
4500 "enum struct", e.g.,
4502 enum class Color {
4503 Red, Green, Blue
4506 Scoped enumeration types are different from normal (unscoped)
4507 enumeration types in several ways:
4509 - The enumerators of a scoped enumeration type are only available
4510 within the scope of the enumeration type and not in the
4511 enclosing scope. For example, the Red color can be referred to
4512 with "Color::Red" but not "Red".
4514 - Scoped enumerators and enumerations do not implicitly convert
4515 to integers or 'bool'.
4517 - The underlying type of the enum is well-defined. */
4518 #define SCOPED_ENUM_P(TYPE) \
4519 (TREE_CODE (TYPE) == ENUMERAL_TYPE && ENUM_IS_SCOPED (TYPE))
4521 /* Determine whether this is an unscoped enumeration type. */
4522 #define UNSCOPED_ENUM_P(TYPE) \
4523 (TREE_CODE (TYPE) == ENUMERAL_TYPE && !ENUM_IS_SCOPED (TYPE))
4525 /* Set the flag indicating whether an ENUMERAL_TYPE is a C++0x scoped
4526 enumeration type (1) or a normal (unscoped) enumeration type
4527 (0). */
4528 #define SET_SCOPED_ENUM_P(TYPE, VAL) \
4529 (ENUM_IS_SCOPED (TYPE) = (VAL))
4531 #define SET_OPAQUE_ENUM_P(TYPE, VAL) \
4532 (ENUM_IS_OPAQUE (TYPE) = (VAL))
4534 #define OPAQUE_ENUM_P(TYPE) \
4535 (TREE_CODE (TYPE) == ENUMERAL_TYPE && ENUM_IS_OPAQUE (TYPE))
4537 /* [dcl.init.aggr]
4539 An aggregate is an array or a class with no user-provided
4540 constructors, no brace-or-equal-initializers for non-static data
4541 members, no private or protected non-static data members, no
4542 base classes, and no virtual functions.
4544 As an extension, we also treat vectors as aggregates. Keep these
4545 checks in ascending code order. */
4546 #define CP_AGGREGATE_TYPE_P(TYPE) \
4547 (gnu_vector_type_p (TYPE) \
4548 || TREE_CODE (TYPE) == ARRAY_TYPE \
4549 || (CLASS_TYPE_P (TYPE) && COMPLETE_TYPE_P (TYPE) && !CLASSTYPE_NON_AGGREGATE (TYPE)))
4551 /* Nonzero for a class type means that the class type has a
4552 user-declared constructor. */
4553 #define TYPE_HAS_USER_CONSTRUCTOR(NODE) (TYPE_LANG_FLAG_1 (NODE))
4555 /* Nonzero means that the FUNCTION_TYPE or METHOD_TYPE has a
4556 late-specified return type. */
4557 #define TYPE_HAS_LATE_RETURN_TYPE(NODE) \
4558 (TYPE_LANG_FLAG_2 (FUNC_OR_METHOD_CHECK (NODE)))
4560 /* When appearing in an INDIRECT_REF, it means that the tree structure
4561 underneath is actually a call to a constructor. This is needed
4562 when the constructor must initialize local storage (which can
4563 be automatically destroyed), rather than allowing it to allocate
4564 space from the heap.
4566 When appearing in a SAVE_EXPR, it means that underneath
4567 is a call to a constructor.
4569 When appearing in a CONSTRUCTOR, the expression is an unconverted
4570 compound literal.
4572 When appearing in a CALL_EXPR, it means that it is a call to
4573 a constructor.
4575 When appearing in a FIELD_DECL, it means that this field
4576 has been duly initialized in its constructor. */
4577 #define TREE_HAS_CONSTRUCTOR(NODE) (TREE_LANG_FLAG_4 (NODE))
4579 /* True if NODE is a brace-enclosed initializer. */
4580 #define BRACE_ENCLOSED_INITIALIZER_P(NODE) \
4581 (TREE_CODE (NODE) == CONSTRUCTOR && TREE_TYPE (NODE) == init_list_type_node)
4583 /* True if NODE is a compound-literal, i.e., a brace-enclosed
4584 initializer cast to a particular type. This is mostly only set during
4585 template parsing; once the initializer has been digested into an actual
4586 value of the type, the expression is represented by a TARGET_EXPR. */
4587 #define COMPOUND_LITERAL_P(NODE) \
4588 (TREE_CODE (NODE) == CONSTRUCTOR && TREE_HAS_CONSTRUCTOR (NODE))
4590 #define EMPTY_CONSTRUCTOR_P(NODE) (TREE_CODE (NODE) == CONSTRUCTOR \
4591 && vec_safe_is_empty(CONSTRUCTOR_ELTS(NODE))\
4592 && !TREE_HAS_CONSTRUCTOR (NODE))
4594 /* True if NODE is a init-list used as a direct-initializer, i.e.
4595 B b{1,2}, not B b({1,2}) or B b = {1,2}. */
4596 #define CONSTRUCTOR_IS_DIRECT_INIT(NODE) (TREE_LANG_FLAG_0 (CONSTRUCTOR_CHECK (NODE)))
4598 /* True if this CONSTRUCTOR is instantiation-dependent and needs to be
4599 substituted. */
4600 #define CONSTRUCTOR_IS_DEPENDENT(NODE) \
4601 (TREE_LANG_FLAG_1 (CONSTRUCTOR_CHECK (NODE)))
4603 /* True if this CONSTRUCTOR should not be used as a variable initializer
4604 because it was loaded from a constexpr variable with mutable fields. */
4605 #define CONSTRUCTOR_MUTABLE_POISON(NODE) \
4606 (TREE_LANG_FLAG_2 (CONSTRUCTOR_CHECK (NODE)))
4608 /* True if this typed CONSTRUCTOR represents C99 compound-literal syntax rather
4609 than C++11 functional cast syntax. */
4610 #define CONSTRUCTOR_C99_COMPOUND_LITERAL(NODE) \
4611 (TREE_LANG_FLAG_3 (CONSTRUCTOR_CHECK (NODE)))
4613 /* True if this CONSTRUCTOR contains PLACEHOLDER_EXPRs referencing the
4614 CONSTRUCTOR's type not nested inside another CONSTRUCTOR marked with
4615 CONSTRUCTOR_PLACEHOLDER_BOUNDARY. */
4616 #define CONSTRUCTOR_PLACEHOLDER_BOUNDARY(NODE) \
4617 (TREE_LANG_FLAG_5 (CONSTRUCTOR_CHECK (NODE)))
4619 #define DIRECT_LIST_INIT_P(NODE) \
4620 (BRACE_ENCLOSED_INITIALIZER_P (NODE) && CONSTRUCTOR_IS_DIRECT_INIT (NODE))
4622 /* True if this is a designated initializer (when we allow initializer-clauses
4623 mixed with designated-initializer-clauses set whenever there is at least
4624 one designated-initializer-clause), or a C99 designator. */
4625 #define CONSTRUCTOR_IS_DESIGNATED_INIT(NODE) \
4626 (TREE_LANG_FLAG_6 (CONSTRUCTOR_CHECK (NODE)))
4628 /* True if this CONSTRUCTOR comes from a parenthesized list of values, e.g.
4629 A(1, 2, 3). */
4630 #define CONSTRUCTOR_IS_PAREN_INIT(NODE) \
4631 (CONSTRUCTOR_CHECK(NODE)->base.private_flag)
4633 /* True if reshape_init built this sub-CONSTRUCTOR to undo the brace elision
4634 of the original CONSTRUCTOR. This flag is used during C++20 aggregate
4635 CTAD. */
4636 #define CONSTRUCTOR_BRACES_ELIDED_P(NODE) \
4637 (CONSTRUCTOR_CHECK (NODE)->base.protected_flag)
4639 /* True if NODE represents a conversion for direct-initialization in a
4640 template. Set by perform_implicit_conversion_flags. */
4641 #define IMPLICIT_CONV_EXPR_DIRECT_INIT(NODE) \
4642 (TREE_LANG_FLAG_0 (IMPLICIT_CONV_EXPR_CHECK (NODE)))
4644 /* True if NODE represents a dependent conversion of a non-type template
4645 argument. Set by maybe_convert_nontype_argument. */
4646 #define IMPLICIT_CONV_EXPR_NONTYPE_ARG(NODE) \
4647 (TREE_LANG_FLAG_1 (IMPLICIT_CONV_EXPR_CHECK (NODE)))
4649 /* True if NODE represents a conversion for braced-init-list in a
4650 template. Set by perform_implicit_conversion_flags. */
4651 #define IMPLICIT_CONV_EXPR_BRACED_INIT(NODE) \
4652 (TREE_LANG_FLAG_2 (IMPLICIT_CONV_EXPR_CHECK (NODE)))
4654 /* Nonzero means that an object of this type cannot be initialized using
4655 an initializer list. */
4656 #define CLASSTYPE_NON_AGGREGATE(NODE) \
4657 (LANG_TYPE_CLASS_CHECK (NODE)->non_aggregate)
4658 #define TYPE_NON_AGGREGATE_CLASS(NODE) \
4659 (CLASS_TYPE_P (NODE) && CLASSTYPE_NON_AGGREGATE (NODE))
4661 /* Nonzero if there is a non-trivial X::op=(cv X&) for this class. */
4662 #define TYPE_HAS_COMPLEX_COPY_ASSIGN(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->has_complex_copy_assign)
4664 /* Nonzero if there is a non-trivial X::X(cv X&) for this class. */
4665 #define TYPE_HAS_COMPLEX_COPY_CTOR(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->has_complex_copy_ctor)
4667 /* Nonzero if there is a non-trivial X::op=(X&&) for this class. */
4668 #define TYPE_HAS_COMPLEX_MOVE_ASSIGN(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->has_complex_move_assign)
4670 /* Nonzero if there is a non-trivial X::X(X&&) for this class. */
4671 #define TYPE_HAS_COMPLEX_MOVE_CTOR(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->has_complex_move_ctor)
4673 /* Nonzero if there is no trivial default constructor for this class. */
4674 #define TYPE_HAS_COMPLEX_DFLT(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->has_complex_dflt)
4676 /* Nonzero if TYPE has a trivial destructor. From [class.dtor]:
4678 A destructor is trivial if it is an implicitly declared
4679 destructor and if:
4681 - all of the direct base classes of its class have trivial
4682 destructors,
4684 - for all of the non-static data members of its class that are
4685 of class type (or array thereof), each such class has a
4686 trivial destructor. */
4687 #define TYPE_HAS_TRIVIAL_DESTRUCTOR(NODE) \
4688 (!TYPE_HAS_NONTRIVIAL_DESTRUCTOR (NODE))
4690 /* Nonzero for _TYPE node means that this type does not have a trivial
4691 destructor. Therefore, destroying an object of this type will
4692 involve a call to a destructor. This can apply to objects of
4693 ARRAY_TYPE if the type of the elements needs a destructor. */
4694 #define TYPE_HAS_NONTRIVIAL_DESTRUCTOR(NODE) \
4695 (TYPE_LANG_FLAG_4 (NODE))
4697 /* Nonzero for class type means that the default constructor is trivial. */
4698 #define TYPE_HAS_TRIVIAL_DFLT(NODE) \
4699 (TYPE_HAS_DEFAULT_CONSTRUCTOR (NODE) && ! TYPE_HAS_COMPLEX_DFLT (NODE))
4701 /* Nonzero for class type means that copy initialization of this type can use
4702 a bitwise copy. */
4703 #define TYPE_HAS_TRIVIAL_COPY_CTOR(NODE) \
4704 (TYPE_HAS_COPY_CTOR (NODE) && ! TYPE_HAS_COMPLEX_COPY_CTOR (NODE))
4706 /* Nonzero for class type means that assignment of this type can use
4707 a bitwise copy. */
4708 #define TYPE_HAS_TRIVIAL_COPY_ASSIGN(NODE) \
4709 (TYPE_HAS_COPY_ASSIGN (NODE) && ! TYPE_HAS_COMPLEX_COPY_ASSIGN (NODE))
4711 /* Returns true if NODE is a pointer-to-data-member. */
4712 #define TYPE_PTRDATAMEM_P(NODE) \
4713 (TREE_CODE (NODE) == OFFSET_TYPE)
4715 /* Returns true if NODE is a pointer. */
4716 #define TYPE_PTR_P(NODE) \
4717 (TREE_CODE (NODE) == POINTER_TYPE)
4719 /* Returns true if NODE is a reference. */
4720 #define TYPE_REF_P(NODE) \
4721 (TREE_CODE (NODE) == REFERENCE_TYPE)
4723 /* Returns true if NODE is a pointer or a reference. */
4724 #define INDIRECT_TYPE_P(NODE) \
4725 (TYPE_PTR_P (NODE) || TYPE_REF_P (NODE))
4727 /* Returns true if NODE is an object type:
4729 [basic.types]
4731 An object type is a (possibly cv-qualified) type that is not a
4732 function type, not a reference type, and not a void type.
4734 Keep these checks in ascending order, for speed. */
4735 #define TYPE_OBJ_P(NODE) \
4736 (!TYPE_REF_P (NODE) \
4737 && !VOID_TYPE_P (NODE) \
4738 && !FUNC_OR_METHOD_TYPE_P (NODE))
4740 /* Returns true if NODE is a pointer to an object. Keep these checks
4741 in ascending tree code order. */
4742 #define TYPE_PTROB_P(NODE) \
4743 (TYPE_PTR_P (NODE) && TYPE_OBJ_P (TREE_TYPE (NODE)))
4745 /* Returns true if NODE is a reference to an object. Keep these checks
4746 in ascending tree code order. */
4747 #define TYPE_REF_OBJ_P(NODE) \
4748 (TYPE_REF_P (NODE) && TYPE_OBJ_P (TREE_TYPE (NODE)))
4750 /* Returns true if NODE is a pointer to an object, or a pointer to
4751 void. Keep these checks in ascending tree code order. */
4752 #define TYPE_PTROBV_P(NODE) \
4753 (TYPE_PTR_P (NODE) \
4754 && !FUNC_OR_METHOD_TYPE_P (TREE_TYPE (NODE)))
4756 /* Returns true if NODE is a pointer to function type. */
4757 #define TYPE_PTRFN_P(NODE) \
4758 (TYPE_PTR_P (NODE) \
4759 && TREE_CODE (TREE_TYPE (NODE)) == FUNCTION_TYPE)
4761 /* Returns true if NODE is a reference to function type. */
4762 #define TYPE_REFFN_P(NODE) \
4763 (TYPE_REF_P (NODE) \
4764 && TREE_CODE (TREE_TYPE (NODE)) == FUNCTION_TYPE)
4766 /* Returns true if NODE is a pointer to member function type. */
4767 #define TYPE_PTRMEMFUNC_P(NODE) \
4768 (TREE_CODE (NODE) == RECORD_TYPE \
4769 && TYPE_PTRMEMFUNC_FLAG (NODE))
4771 #define TYPE_PTRMEMFUNC_FLAG(NODE) \
4772 (TYPE_LANG_FLAG_2 (RECORD_TYPE_CHECK (NODE)))
4774 /* Returns true if NODE is a pointer-to-member. */
4775 #define TYPE_PTRMEM_P(NODE) \
4776 (TYPE_PTRDATAMEM_P (NODE) || TYPE_PTRMEMFUNC_P (NODE))
4778 /* Returns true if NODE is a pointer or a pointer-to-member. */
4779 #define TYPE_PTR_OR_PTRMEM_P(NODE) \
4780 (TYPE_PTR_P (NODE) || TYPE_PTRMEM_P (NODE))
4782 /* Indicates when overload resolution may resolve to a pointer to
4783 member function. [expr.unary.op]/3 */
4784 #define PTRMEM_OK_P(NODE) \
4785 TREE_LANG_FLAG_0 (TREE_CHECK3 ((NODE), ADDR_EXPR, OFFSET_REF, SCOPE_REF))
4787 /* True if this ADDR_EXPR denotes a function call; that is, it's
4788 fn() rather than &fn. */
4789 #define ADDR_EXPR_DENOTES_CALL_P(NODE) \
4790 (ADDR_EXPR_CHECK(NODE)->base.protected_flag)
4792 /* Get the POINTER_TYPE to the METHOD_TYPE associated with this
4793 pointer to member function. TYPE_PTRMEMFUNC_P _must_ be true,
4794 before using this macro. */
4795 #define TYPE_PTRMEMFUNC_FN_TYPE(NODE) \
4796 (cp_build_qualified_type (TREE_TYPE (TYPE_FIELDS (NODE)),\
4797 cp_type_quals (NODE)))
4799 /* As above, but can be used in places that want an lvalue at the expense
4800 of not necessarily having the correct cv-qualifiers. */
4801 #define TYPE_PTRMEMFUNC_FN_TYPE_RAW(NODE) \
4802 (TREE_TYPE (TYPE_FIELDS (NODE)))
4804 /* Returns `A' for a type like `int (A::*)(double)' */
4805 #define TYPE_PTRMEMFUNC_OBJECT_TYPE(NODE) \
4806 TYPE_METHOD_BASETYPE (TREE_TYPE (TYPE_PTRMEMFUNC_FN_TYPE (NODE)))
4808 /* The canonical internal RECORD_TYPE from the POINTER_TYPE to
4809 METHOD_TYPE. */
4810 #define TYPE_PTRMEMFUNC_TYPE(NODE) \
4811 TYPE_LANG_SLOT_1 (NODE)
4813 /* For a pointer-to-member type of the form `T X::*', this is `X'.
4814 For a type like `void (X::*)() const', this type is `X', not `const
4815 X'. To get at the `const X' you have to look at the
4816 TYPE_PTRMEM_POINTED_TO_TYPE; there, the first parameter will have
4817 type `const X*'. */
4818 #define TYPE_PTRMEM_CLASS_TYPE(NODE) \
4819 (TYPE_PTRDATAMEM_P (NODE) \
4820 ? TYPE_OFFSET_BASETYPE (NODE) \
4821 : TYPE_PTRMEMFUNC_OBJECT_TYPE (NODE))
4823 /* For a pointer-to-member type of the form `T X::*', this is `T'. */
4824 #define TYPE_PTRMEM_POINTED_TO_TYPE(NODE) \
4825 (TYPE_PTRDATAMEM_P (NODE) \
4826 ? TREE_TYPE (NODE) \
4827 : TREE_TYPE (TYPE_PTRMEMFUNC_FN_TYPE (NODE)))
4829 /* For a pointer-to-member constant `X::Y' this is the RECORD_TYPE for
4830 `X'. */
4831 #define PTRMEM_CST_CLASS(NODE) \
4832 TYPE_PTRMEM_CLASS_TYPE (TREE_TYPE (PTRMEM_CST_CHECK (NODE)))
4834 /* For a pointer-to-member constant `X::Y' this is the _DECL for
4835 `Y'. */
4836 #define PTRMEM_CST_MEMBER(NODE) \
4837 (((ptrmem_cst_t)PTRMEM_CST_CHECK (NODE))->member)
4839 /* For a pointer-to-member constant `X::Y' this is a location where
4840 the address of the member has been taken. */
4841 #define PTRMEM_CST_LOCATION(NODE) \
4842 (((ptrmem_cst_t)PTRMEM_CST_CHECK (NODE))->locus)
4844 /* The expression in question for a TYPEOF_TYPE. */
4845 #define TYPEOF_TYPE_EXPR(NODE) (TYPE_VALUES_RAW (TYPEOF_TYPE_CHECK (NODE)))
4847 /* The type in question for an UNDERLYING_TYPE. */
4848 #define UNDERLYING_TYPE_TYPE(NODE) \
4849 (TYPE_VALUES_RAW (UNDERLYING_TYPE_CHECK (NODE)))
4851 /* The type in question for BASES. */
4852 #define BASES_TYPE(NODE) \
4853 (TYPE_VALUES_RAW (BASES_CHECK (NODE)))
4855 #define BASES_DIRECT(NODE) \
4856 TREE_LANG_FLAG_0 (BASES_CHECK (NODE))
4858 /* The expression in question for a DECLTYPE_TYPE. */
4859 #define DECLTYPE_TYPE_EXPR(NODE) (TYPE_VALUES_RAW (DECLTYPE_TYPE_CHECK (NODE)))
4861 /* Whether the DECLTYPE_TYPE_EXPR of NODE was originally parsed as an
4862 id-expression or a member-access expression. When false, it was
4863 parsed as a full expression. */
4864 #define DECLTYPE_TYPE_ID_EXPR_OR_MEMBER_ACCESS_P(NODE) \
4865 (DECLTYPE_TYPE_CHECK (NODE))->type_common.string_flag
4867 /* These flags indicate that we want different semantics from normal
4868 decltype: lambda capture just drops references,
4869 lambda proxies look through implicit dereference. */
4870 #define DECLTYPE_FOR_LAMBDA_CAPTURE(NODE) \
4871 TREE_LANG_FLAG_0 (DECLTYPE_TYPE_CHECK (NODE))
4872 #define DECLTYPE_FOR_LAMBDA_PROXY(NODE) \
4873 TREE_LANG_FLAG_2 (DECLTYPE_TYPE_CHECK (NODE))
4874 #define DECLTYPE_FOR_REF_CAPTURE(NODE) \
4875 TREE_LANG_FLAG_3 (DECLTYPE_TYPE_CHECK (NODE))
4877 /* Nonzero for VAR_DECL and FUNCTION_DECL node means that `extern' was
4878 specified in its declaration. This can also be set for an
4879 erroneously declared PARM_DECL. */
4880 #define DECL_THIS_EXTERN(NODE) \
4881 DECL_LANG_FLAG_2 (VAR_FUNCTION_OR_PARM_DECL_CHECK (NODE))
4883 /* Nonzero for VAR_DECL and FUNCTION_DECL node means that `static' was
4884 specified in its declaration. This can also be set for an
4885 erroneously declared PARM_DECL. */
4886 #define DECL_THIS_STATIC(NODE) \
4887 DECL_LANG_FLAG_6 (VAR_FUNCTION_OR_PARM_DECL_CHECK (NODE))
4889 /* Nonzero for FIELD_DECL node means that this field is a lambda capture
4890 field for an array of runtime bound. */
4891 #define DECL_VLA_CAPTURE_P(NODE) \
4892 DECL_LANG_FLAG_1 (FIELD_DECL_CHECK (NODE))
4894 /* Nonzero for PARM_DECL node means that this is an array function
4895 parameter, i.e, a[] rather than *a. */
4896 #define DECL_ARRAY_PARAMETER_P(NODE) \
4897 DECL_LANG_FLAG_1 (PARM_DECL_CHECK (NODE))
4899 /* Nonzero for a FIELD_DECL who's NSMDI is currently being
4900 instantiated. */
4901 #define DECL_INSTANTIATING_NSDMI_P(NODE) \
4902 DECL_LANG_FLAG_2 (FIELD_DECL_CHECK (NODE))
4904 /* Nonzero for FIELD_DECL node means that this field is a base class
4905 of the parent object, as opposed to a member field. */
4906 #define DECL_FIELD_IS_BASE(NODE) \
4907 DECL_LANG_FLAG_6 (FIELD_DECL_CHECK (NODE))
4909 /* Nonzero for FIELD_DECL node means that this field is a simple (no
4910 explicit initializer) lambda capture field, making it invisible to
4911 name lookup in unevaluated contexts. */
4912 #define DECL_NORMAL_CAPTURE_P(NODE) \
4913 DECL_LANG_FLAG_7 (FIELD_DECL_CHECK (NODE))
4915 /* Nonzero if TYPE is an anonymous union or struct type. We have to use a
4916 flag for this because "A union for which objects or pointers are
4917 declared is not an anonymous union" [class.union]. */
4918 #define ANON_AGGR_TYPE_P(NODE) \
4919 (CLASS_TYPE_P (NODE) && LANG_TYPE_CLASS_CHECK (NODE)->anon_aggr)
4920 #define SET_ANON_AGGR_TYPE_P(NODE) \
4921 (LANG_TYPE_CLASS_CHECK (NODE)->anon_aggr = 1)
4923 /* Nonzero if TYPE is an anonymous union type. */
4924 #define ANON_UNION_TYPE_P(NODE) \
4925 (TREE_CODE (NODE) == UNION_TYPE && ANON_AGGR_TYPE_P (NODE))
4927 /* For an ANON_AGGR_TYPE_P the single FIELD_DECL it is used with. */
4928 #define ANON_AGGR_TYPE_FIELD(NODE) \
4929 (LANG_TYPE_CLASS_CHECK (NODE)->typeinfo_var)
4931 /* Define fields and accessors for nodes representing declared names. */
4933 /* True if TYPE is an unnamed structured type with a typedef for
4934 linkage purposes. In that case TYPE_NAME and TYPE_STUB_DECL of the
4935 MAIN-VARIANT are different. */
4936 #define TYPE_WAS_UNNAMED(NODE) \
4937 (TYPE_NAME (TYPE_MAIN_VARIANT (NODE)) \
4938 != TYPE_STUB_DECL (TYPE_MAIN_VARIANT (NODE)))
4940 /* C++: all of these are overloaded! These apply only to TYPE_DECLs. */
4942 /* The format of each node in the DECL_FRIENDLIST is as follows:
4944 The TREE_PURPOSE will be the name of a function, i.e., an
4945 IDENTIFIER_NODE. The TREE_VALUE will be itself a TREE_LIST, whose
4946 TREE_VALUEs are friends with the given name. */
4947 #define DECL_FRIENDLIST(NODE) (DECL_INITIAL (NODE))
4948 #define FRIEND_NAME(LIST) (TREE_PURPOSE (LIST))
4949 #define FRIEND_DECLS(LIST) (TREE_VALUE (LIST))
4951 /* The DECL_ACCESS, if non-NULL, is a TREE_LIST. The TREE_PURPOSE of
4952 each node is a type; the TREE_VALUE is the access granted for this
4953 DECL in that type. The DECL_ACCESS is set by access declarations.
4954 For example, if a member that would normally be public in a
4955 derived class is made protected, then the derived class and the
4956 protected_access_node will appear in the DECL_ACCESS for the node. */
4957 #define DECL_ACCESS(NODE) (LANG_DECL_MIN_CHECK (NODE)->access)
4959 /* Nonzero if the FUNCTION_DECL is a global constructor. */
4960 #define DECL_GLOBAL_CTOR_P(NODE) \
4961 (LANG_DECL_FN_CHECK (NODE)->global_ctor_p)
4963 /* Nonzero if the FUNCTION_DECL is a global destructor. */
4964 #define DECL_GLOBAL_DTOR_P(NODE) \
4965 (LANG_DECL_FN_CHECK (NODE)->global_dtor_p)
4967 /* Accessor macros for C++ template decl nodes. */
4969 /* The DECL_TEMPLATE_PARMS are a list. The TREE_PURPOSE of each node
4970 is a INT_CST whose TREE_INT_CST_LOW indicates the level of the
4971 template parameters, with 1 being the outermost set of template
4972 parameters. The TREE_TYPE is TEMPLATE_PARMS_CONSTRAINTS.
4973 The TREE_VALUE is a vector, whose elements are the
4974 template parameters at each level. Each element in the vector is a
4975 TREE_LIST, whose TREE_VALUE is a PARM_DECL (if the parameter is a
4976 non-type parameter), or a TYPE_DECL (if the parameter is a type
4977 parameter) or a TEMPLATE_DECL (if the parameter is a template
4978 parameter). The TREE_PURPOSE is the default value, if any.
4979 The TREE_TYPE is TEMPLATE_PARM_CONSTRAINTS. The
4980 TEMPLATE_PARM_INDEX for the parameter is available as the
4981 DECL_INITIAL (for a PARM_DECL) or as the TREE_TYPE (for a
4982 TYPE_DECL).
4984 FIXME: CONST_CAST_TREE is a hack that hopefully will go away after
4985 tree is converted to C++ class hiearchy. */
4986 #define DECL_TEMPLATE_PARMS(NODE) \
4987 ((struct tree_template_decl *)CONST_CAST_TREE (TEMPLATE_DECL_CHECK (NODE)))->arguments
4988 #define DECL_INNERMOST_TEMPLATE_PARMS(NODE) \
4989 INNERMOST_TEMPLATE_PARMS (DECL_TEMPLATE_PARMS (NODE))
4990 #define DECL_NTPARMS(NODE) \
4991 TREE_VEC_LENGTH (DECL_INNERMOST_TEMPLATE_PARMS (NODE))
4992 /* For function, method, class-data templates.
4994 FIXME: CONST_CAST_TREE is a hack that hopefully will go away after
4995 tree is converted to C++ class hiearchy. */
4996 #define DECL_TEMPLATE_RESULT(NODE) \
4997 ((struct tree_template_decl *)CONST_CAST_TREE(TEMPLATE_DECL_CHECK (NODE)))->result
4998 /* For a function template at namespace scope, DECL_TEMPLATE_INSTANTIATIONS
4999 lists all instantiations and specializations of the function so that
5000 tsubst_friend_function can reassign them to another template if we find
5001 that the namespace-scope template is really a partial instantiation of a
5002 friend template.
5004 For a class template the DECL_TEMPLATE_INSTANTIATIONS lists holds
5005 all instantiations and specializations of the class type, including
5006 partial instantiations and partial specializations, so that if we
5007 explicitly specialize a partial instantiation we can walk the list
5008 in maybe_process_partial_specialization and reassign them or complain
5009 as appropriate.
5011 In both cases, the TREE_PURPOSE of each node contains the arguments
5012 used; the TREE_VALUE contains the generated variable. The template
5013 arguments are always complete. For example, given:
5015 template <class T> struct S1 {
5016 template <class U> struct S2 {};
5017 template <class U> struct S2<U*> {};
5020 the record for the partial specialization will contain, as its
5021 argument list, { {T}, {U*} }, and will be on the
5022 DECL_TEMPLATE_INSTANTIATIONS list for `template <class T> template
5023 <class U> struct S1<T>::S2'.
5025 This list is not used for other templates. */
5026 #define DECL_TEMPLATE_INSTANTIATIONS(NODE) \
5027 DECL_SIZE_UNIT (TEMPLATE_DECL_CHECK (NODE))
5029 /* For a class template, this list contains the partial
5030 specializations of this template. (Full specializations are not
5031 recorded on this list.) The TREE_PURPOSE holds the arguments used
5032 in the partial specialization (e.g., for `template <class T> struct
5033 S<T*, int>' this will be `T*, int'.) The arguments will also include
5034 any outer template arguments. The TREE_VALUE holds the TEMPLATE_DECL
5035 for the partial specialization. The TREE_TYPE is the _TYPE node for
5036 the partial specialization.
5038 This list is not used for other templates. */
5039 #define DECL_TEMPLATE_SPECIALIZATIONS(NODE) \
5040 DECL_SIZE (TEMPLATE_DECL_CHECK (NODE))
5042 /* Nonzero for a DECL which is actually a template parameter. Keep
5043 these checks in ascending tree code order. */
5044 #define DECL_TEMPLATE_PARM_P(NODE) \
5045 (DECL_LANG_FLAG_0 (NODE) \
5046 && (TREE_CODE (NODE) == CONST_DECL \
5047 || TREE_CODE (NODE) == PARM_DECL \
5048 || TREE_CODE (NODE) == TYPE_DECL \
5049 || TREE_CODE (NODE) == TEMPLATE_DECL))
5051 /* Nonzero for a raw template parameter node. */
5052 #define TEMPLATE_PARM_P(NODE) \
5053 (TREE_CODE (NODE) == TEMPLATE_TYPE_PARM \
5054 || TREE_CODE (NODE) == TEMPLATE_TEMPLATE_PARM \
5055 || TREE_CODE (NODE) == TEMPLATE_PARM_INDEX)
5057 /* Mark NODE as a template parameter. */
5058 #define SET_DECL_TEMPLATE_PARM_P(NODE) \
5059 (DECL_LANG_FLAG_0 (NODE) = 1)
5061 /* Nonzero if NODE is a template template parameter. */
5062 #define DECL_TEMPLATE_TEMPLATE_PARM_P(NODE) \
5063 (TREE_CODE (NODE) == TEMPLATE_DECL && DECL_TEMPLATE_PARM_P (NODE))
5065 /* Nonzero for a DECL that represents a function template. */
5066 #define DECL_FUNCTION_TEMPLATE_P(NODE) \
5067 (TREE_CODE (NODE) == TEMPLATE_DECL \
5068 && DECL_TEMPLATE_RESULT (NODE) != NULL_TREE \
5069 && TREE_CODE (DECL_TEMPLATE_RESULT (NODE)) == FUNCTION_DECL)
5071 /* Nonzero for a DECL that represents a class template or alias
5072 template. */
5073 #define DECL_TYPE_TEMPLATE_P(NODE) \
5074 (TREE_CODE (NODE) == TEMPLATE_DECL \
5075 && DECL_TEMPLATE_RESULT (NODE) != NULL_TREE \
5076 && TREE_CODE (DECL_TEMPLATE_RESULT (NODE)) == TYPE_DECL)
5078 /* Nonzero for a DECL that represents a class template. */
5079 #define DECL_CLASS_TEMPLATE_P(NODE) \
5080 (DECL_TYPE_TEMPLATE_P (NODE) \
5081 && DECL_IMPLICIT_TYPEDEF_P (DECL_TEMPLATE_RESULT (NODE)))
5083 /* Nonzero for a TEMPLATE_DECL that represents an alias template. */
5084 #define DECL_ALIAS_TEMPLATE_P(NODE) \
5085 (DECL_TYPE_TEMPLATE_P (NODE) \
5086 && !DECL_ARTIFICIAL (DECL_TEMPLATE_RESULT (NODE)))
5088 /* Nonzero for a NODE which declares a type. */
5089 #define DECL_DECLARES_TYPE_P(NODE) \
5090 (TREE_CODE (NODE) == TYPE_DECL || DECL_TYPE_TEMPLATE_P (NODE))
5092 /* Nonzero if NODE declares a function. */
5093 #define DECL_DECLARES_FUNCTION_P(NODE) \
5094 (TREE_CODE (NODE) == FUNCTION_DECL || DECL_FUNCTION_TEMPLATE_P (NODE))
5096 /* Nonzero if NODE is the typedef implicitly generated for a type when
5097 the type is declared. In C++, `struct S {};' is roughly
5098 equivalent to `struct S {}; typedef struct S S;' in C.
5099 DECL_IMPLICIT_TYPEDEF_P will hold for the typedef indicated in this
5100 example. In C++, there is a second implicit typedef for each
5101 class, called the injected-class-name, in the scope of `S' itself, so that
5102 you can say `S::S'. DECL_SELF_REFERENCE_P will hold for that typedef. */
5103 #define DECL_IMPLICIT_TYPEDEF_P(NODE) \
5104 (TREE_CODE (NODE) == TYPE_DECL && DECL_LANG_FLAG_2 (NODE))
5105 #define SET_DECL_IMPLICIT_TYPEDEF_P(NODE) \
5106 (DECL_LANG_FLAG_2 (NODE) = 1)
5107 #define DECL_SELF_REFERENCE_P(NODE) \
5108 (TREE_CODE (NODE) == TYPE_DECL && DECL_LANG_FLAG_4 (NODE))
5109 #define SET_DECL_SELF_REFERENCE_P(NODE) \
5110 (DECL_LANG_FLAG_4 (NODE) = 1)
5112 /* A `primary' template is one that has its own template header and is not
5113 a partial specialization. A member function of a class template is a
5114 template, but not primary. A member template is primary. Friend
5115 templates are primary, too. */
5117 /* Returns the primary template corresponding to these parameters. */
5118 #define TPARMS_PRIMARY_TEMPLATE(NODE) (TREE_TYPE (TREE_VEC_CHECK (NODE)))
5120 #define DECL_PRIMARY_TEMPLATE(NODE) \
5121 (TPARMS_PRIMARY_TEMPLATE (DECL_INNERMOST_TEMPLATE_PARMS (NODE)))
5123 /* Returns nonzero if NODE is a primary template. */
5124 #define PRIMARY_TEMPLATE_P(NODE) (DECL_PRIMARY_TEMPLATE (NODE) == (NODE))
5126 /* Nonzero iff NODE is a specialization of a template. The value
5127 indicates the type of specializations:
5129 1=implicit instantiation
5131 2=partial or explicit specialization, e.g.:
5133 template <> int min<int> (int, int),
5135 3=explicit instantiation, e.g.:
5137 template int min<int> (int, int);
5139 Note that NODE will be marked as a specialization even if the
5140 template it is instantiating is not a primary template. For
5141 example, given:
5143 template <typename T> struct O {
5144 void f();
5145 struct I {};
5148 both O<int>::f and O<int>::I will be marked as instantiations.
5150 If DECL_USE_TEMPLATE is nonzero, then DECL_TEMPLATE_INFO will also
5151 be non-NULL. */
5152 #define DECL_USE_TEMPLATE(NODE) (DECL_LANG_SPECIFIC (NODE)->u.base.use_template)
5154 /* Like DECL_USE_TEMPLATE, but for class types. */
5155 #define CLASSTYPE_USE_TEMPLATE(NODE) \
5156 (LANG_TYPE_CLASS_CHECK (NODE)->use_template)
5158 /* True if NODE is a specialization of a primary template. */
5159 #define CLASSTYPE_SPECIALIZATION_OF_PRIMARY_TEMPLATE_P(NODE) \
5160 (CLASS_TYPE_P (NODE) \
5161 && CLASSTYPE_USE_TEMPLATE (NODE) \
5162 && PRIMARY_TEMPLATE_P (CLASSTYPE_TI_TEMPLATE (NODE)))
5164 #define DECL_TEMPLATE_INSTANTIATION(NODE) (DECL_USE_TEMPLATE (NODE) & 1)
5165 #define CLASSTYPE_TEMPLATE_INSTANTIATION(NODE) \
5166 (CLASSTYPE_USE_TEMPLATE (NODE) & 1)
5168 #define DECL_TEMPLATE_SPECIALIZATION(NODE) (DECL_USE_TEMPLATE (NODE) == 2)
5169 #define SET_DECL_TEMPLATE_SPECIALIZATION(NODE) (DECL_USE_TEMPLATE (NODE) = 2)
5171 /* Returns true for an explicit or partial specialization of a class
5172 template. */
5173 #define CLASSTYPE_TEMPLATE_SPECIALIZATION(NODE) \
5174 (CLASSTYPE_USE_TEMPLATE (NODE) == 2)
5175 #define SET_CLASSTYPE_TEMPLATE_SPECIALIZATION(NODE) \
5176 (CLASSTYPE_USE_TEMPLATE (NODE) = 2)
5178 #define DECL_IMPLICIT_INSTANTIATION(NODE) (DECL_USE_TEMPLATE (NODE) == 1)
5179 #define SET_DECL_IMPLICIT_INSTANTIATION(NODE) (DECL_USE_TEMPLATE (NODE) = 1)
5180 #define CLASSTYPE_IMPLICIT_INSTANTIATION(NODE) \
5181 (CLASSTYPE_USE_TEMPLATE (NODE) == 1)
5182 #define SET_CLASSTYPE_IMPLICIT_INSTANTIATION(NODE) \
5183 (CLASSTYPE_USE_TEMPLATE (NODE) = 1)
5185 #define DECL_EXPLICIT_INSTANTIATION(NODE) (DECL_USE_TEMPLATE (NODE) == 3)
5186 #define SET_DECL_EXPLICIT_INSTANTIATION(NODE) (DECL_USE_TEMPLATE (NODE) = 3)
5187 #define CLASSTYPE_EXPLICIT_INSTANTIATION(NODE) \
5188 (CLASSTYPE_USE_TEMPLATE (NODE) == 3)
5189 #define SET_CLASSTYPE_EXPLICIT_INSTANTIATION(NODE) \
5190 (CLASSTYPE_USE_TEMPLATE (NODE) = 3)
5192 /* Nonzero if DECL is a friend function which is an instantiation
5193 from the point of view of the compiler, but not from the point of
5194 view of the language. For example given:
5195 template <class T> struct S { friend void f(T) {}; };
5196 the declaration of `void f(int)' generated when S<int> is
5197 instantiated will not be a DECL_TEMPLATE_INSTANTIATION, but will be
5198 a DECL_FRIEND_PSEUDO_TEMPLATE_INSTANTIATION. */
5199 #define DECL_FRIEND_PSEUDO_TEMPLATE_INSTANTIATION(DECL) \
5200 (DECL_LANG_SPECIFIC (DECL) && DECL_TEMPLATE_INFO (DECL) \
5201 && !DECL_USE_TEMPLATE (DECL))
5203 /* Nonzero if DECL is a function generated from a function 'temploid',
5204 i.e. template, member of class template, or dependent friend. */
5205 #define DECL_TEMPLOID_INSTANTIATION(DECL) \
5206 (DECL_TEMPLATE_INSTANTIATION (DECL) \
5207 || DECL_FRIEND_PSEUDO_TEMPLATE_INSTANTIATION (DECL))
5209 /* Nonzero if DECL is either defined implicitly by the compiler or
5210 generated from a temploid. */
5211 #define DECL_GENERATED_P(DECL) \
5212 (DECL_TEMPLOID_INSTANTIATION (DECL) || DECL_DEFAULTED_FN (DECL))
5214 /* Nonzero iff we are currently processing a declaration for an
5215 entity with its own template parameter list, and which is not a
5216 full specialization. */
5217 #define PROCESSING_REAL_TEMPLATE_DECL_P() \
5218 (!processing_template_parmlist \
5219 && current_template_depth > template_class_depth (current_scope ()))
5221 /* Nonzero if this VAR_DECL or FUNCTION_DECL has already been
5222 instantiated, i.e. its definition has been generated from the
5223 pattern given in the template. */
5224 #define DECL_TEMPLATE_INSTANTIATED(NODE) \
5225 DECL_LANG_FLAG_1 (VAR_OR_FUNCTION_DECL_CHECK (NODE))
5227 /* We know what we're doing with this decl now. */
5228 #define DECL_INTERFACE_KNOWN(NODE) DECL_LANG_FLAG_5 (NODE)
5230 /* DECL_EXTERNAL must be set on a decl until the decl is actually emitted,
5231 so that assemble_external will work properly. So we have this flag to
5232 tell us whether the decl is really not external.
5234 This flag does not indicate whether or not the decl is defined in the
5235 current translation unit; it indicates whether or not we should emit the
5236 decl at the end of compilation if it is defined and needed. */
5237 #define DECL_NOT_REALLY_EXTERN(NODE) \
5238 (DECL_LANG_SPECIFIC (NODE)->u.base.not_really_extern)
5240 #define DECL_REALLY_EXTERN(NODE) \
5241 (DECL_EXTERNAL (NODE) \
5242 && (!DECL_LANG_SPECIFIC (NODE) || !DECL_NOT_REALLY_EXTERN (NODE)))
5244 /* A thunk is a stub function.
5246 A thunk is an alternate entry point for an ordinary FUNCTION_DECL.
5247 The address of the ordinary FUNCTION_DECL is given by the
5248 DECL_INITIAL, which is always an ADDR_EXPR whose operand is a
5249 FUNCTION_DECL. The job of the thunk is to either adjust the this
5250 pointer before transferring control to the FUNCTION_DECL, or call
5251 FUNCTION_DECL and then adjust the result value. Note, the result
5252 pointer adjusting thunk must perform a call to the thunked
5253 function, (or be implemented via passing some invisible parameter
5254 to the thunked function, which is modified to perform the
5255 adjustment just before returning).
5257 A thunk may perform either, or both, of the following operations:
5259 o Adjust the this or result pointer by a constant offset.
5260 o Adjust the this or result pointer by looking up a vcall or vbase offset
5261 in the vtable.
5263 A this pointer adjusting thunk converts from a base to a derived
5264 class, and hence adds the offsets. A result pointer adjusting thunk
5265 converts from a derived class to a base, and hence subtracts the
5266 offsets. If both operations are performed, then the constant
5267 adjustment is performed first for this pointer adjustment and last
5268 for the result pointer adjustment.
5270 The constant adjustment is given by THUNK_FIXED_OFFSET. If the
5271 vcall or vbase offset is required, THUNK_VIRTUAL_OFFSET is
5272 used. For this pointer adjusting thunks, it is the vcall offset
5273 into the vtable. For result pointer adjusting thunks it is the
5274 binfo of the virtual base to convert to. Use that binfo's vbase
5275 offset.
5277 It is possible to have equivalent covariant thunks. These are
5278 distinct virtual covariant thunks whose vbase offsets happen to
5279 have the same value. THUNK_ALIAS is used to pick one as the
5280 canonical thunk, which will get all the this pointer adjusting
5281 thunks attached to it. */
5283 /* An integer indicating how many bytes should be subtracted from the
5284 this or result pointer when this function is called. */
5285 #define THUNK_FIXED_OFFSET(DECL) \
5286 (DECL_LANG_SPECIFIC (THUNK_FUNCTION_CHECK (DECL))->u.fn.u5.fixed_offset)
5288 /* A tree indicating how to perform the virtual adjustment. For a this
5289 adjusting thunk it is the number of bytes to be added to the vtable
5290 to find the vcall offset. For a result adjusting thunk, it is the
5291 binfo of the relevant virtual base. If NULL, then there is no
5292 virtual adjust. (The vptr is always located at offset zero from
5293 the this or result pointer.) (If the covariant type is within the
5294 class hierarchy being laid out, the vbase index is not yet known
5295 at the point we need to create the thunks, hence the need to use
5296 binfos.) */
5298 #define THUNK_VIRTUAL_OFFSET(DECL) \
5299 (LANG_DECL_MIN_CHECK (FUNCTION_DECL_CHECK (DECL))->access)
5301 /* A thunk which is equivalent to another thunk. */
5302 #define THUNK_ALIAS(DECL) \
5303 (DECL_LANG_SPECIFIC (FUNCTION_DECL_CHECK (DECL))->u.min.template_info)
5305 /* For thunk NODE, this is the FUNCTION_DECL thunked to. It is
5306 possible for the target to be a thunk too. */
5307 #define THUNK_TARGET(NODE) \
5308 (LANG_DECL_FN_CHECK (NODE)->befriending_classes)
5310 /* True for a SCOPE_REF iff the "template" keyword was used to
5311 indicate that the qualified name denotes a template. */
5312 #define QUALIFIED_NAME_IS_TEMPLATE(NODE) \
5313 (TREE_LANG_FLAG_1 (SCOPE_REF_CHECK (NODE)))
5315 /* [coroutines]
5318 /* True if NODE is a co-routine FUNCTION_DECL. */
5319 #define DECL_COROUTINE_P(NODE) \
5320 (LANG_DECL_FN_CHECK (DECL_COMMON_CHECK (NODE))->coroutine_p)
5322 /* For a FUNCTION_DECL of a coroutine, this holds the ACTOR helper function
5323 decl. */
5324 #define DECL_ACTOR_FN(NODE) \
5325 (coro_get_actor_function ((NODE)))
5327 /* For a FUNCTION_DECL of a coroutine, this holds the DESTROY helper function
5328 decl. */
5329 #define DECL_DESTROY_FN(NODE) \
5330 (coro_get_destroy_function ((NODE)))
5332 /* For a FUNCTION_DECL of a coroutine helper (ACTOR or DESTROY), this points
5333 back to the original (ramp) function. */
5334 #define DECL_RAMP_FN(NODE) \
5335 (coro_get_ramp_function (NODE))
5337 /* True for an OMP_ATOMIC that has dependent parameters. These are stored
5338 as an expr in operand 1, and integer_zero_node or clauses in operand 0. */
5339 #define OMP_ATOMIC_DEPENDENT_P(NODE) \
5340 (TREE_CODE (TREE_OPERAND (OMP_ATOMIC_CHECK (NODE), 0)) == INTEGER_CST \
5341 || TREE_CODE (TREE_OPERAND (OMP_ATOMIC_CHECK (NODE), 0)) == OMP_CLAUSE)
5343 /* Used while gimplifying continue statements bound to OMP_FOR nodes. */
5344 #define OMP_FOR_GIMPLIFYING_P(NODE) \
5345 (TREE_LANG_FLAG_0 (OMP_LOOPING_CHECK (NODE)))
5347 /* A language-specific token attached to the OpenMP data clauses to
5348 hold code (or code fragments) related to ctors, dtors, and op=.
5349 See semantics.cc for details. */
5350 #define CP_OMP_CLAUSE_INFO(NODE) \
5351 TREE_TYPE (OMP_CLAUSE_RANGE_CHECK (NODE, OMP_CLAUSE_PRIVATE, \
5352 OMP_CLAUSE__CONDTEMP_))
5354 /* Nonzero if this transaction expression's body contains statements. */
5355 #define TRANSACTION_EXPR_IS_STMT(NODE) \
5356 TREE_LANG_FLAG_0 (TRANSACTION_EXPR_CHECK (NODE))
5358 /* These macros provide convenient access to the various _STMT nodes
5359 created when parsing template declarations. */
5360 #define TRY_STMTS(NODE) TREE_OPERAND (TRY_BLOCK_CHECK (NODE), 0)
5361 #define TRY_HANDLERS(NODE) TREE_OPERAND (TRY_BLOCK_CHECK (NODE), 1)
5363 #define EH_SPEC_STMTS(NODE) TREE_OPERAND (EH_SPEC_BLOCK_CHECK (NODE), 0)
5364 #define EH_SPEC_RAISES(NODE) TREE_OPERAND (EH_SPEC_BLOCK_CHECK (NODE), 1)
5366 #define USING_STMT_NAMESPACE(NODE) TREE_OPERAND (USING_STMT_CHECK (NODE), 0)
5368 /* Nonzero if this try block is a function try block. */
5369 #define FN_TRY_BLOCK_P(NODE) TREE_LANG_FLAG_3 (TRY_BLOCK_CHECK (NODE))
5370 #define HANDLER_PARMS(NODE) TREE_OPERAND (HANDLER_CHECK (NODE), 0)
5371 #define HANDLER_BODY(NODE) TREE_OPERAND (HANDLER_CHECK (NODE), 1)
5372 #define HANDLER_TYPE(NODE) TREE_TYPE (HANDLER_CHECK (NODE))
5374 /* CLEANUP_STMT accessors. The statement(s) covered, the cleanup to run
5375 and the VAR_DECL for which this cleanup exists. */
5376 #define CLEANUP_BODY(NODE) TREE_OPERAND (CLEANUP_STMT_CHECK (NODE), 0)
5377 #define CLEANUP_EXPR(NODE) TREE_OPERAND (CLEANUP_STMT_CHECK (NODE), 1)
5378 #define CLEANUP_DECL(NODE) TREE_OPERAND (CLEANUP_STMT_CHECK (NODE), 2)
5380 /* IF_STMT accessors. These give access to the condition of the if
5381 statement, the then block of the if statement, and the else block
5382 of the if statement if it exists. */
5383 #define IF_COND(NODE) TREE_OPERAND (IF_STMT_CHECK (NODE), 0)
5384 #define THEN_CLAUSE(NODE) TREE_OPERAND (IF_STMT_CHECK (NODE), 1)
5385 #define ELSE_CLAUSE(NODE) TREE_OPERAND (IF_STMT_CHECK (NODE), 2)
5386 #define IF_SCOPE(NODE) TREE_OPERAND (IF_STMT_CHECK (NODE), 3)
5387 #define IF_STMT_CONSTEXPR_P(NODE) TREE_LANG_FLAG_0 (IF_STMT_CHECK (NODE))
5388 #define IF_STMT_CONSTEVAL_P(NODE) TREE_LANG_FLAG_2 (IF_STMT_CHECK (NODE))
5390 /* Like PACK_EXPANSION_EXTRA_ARGS, for constexpr if. IF_SCOPE is used while
5391 building an IF_STMT; IF_STMT_EXTRA_ARGS is used after it is complete. */
5392 #define IF_STMT_EXTRA_ARGS(NODE) IF_SCOPE (NODE)
5394 /* RANGE_FOR_STMT accessors. These give access to the declarator,
5395 expression, body, and scope of the statement, respectively. */
5396 #define RANGE_FOR_DECL(NODE) TREE_OPERAND (RANGE_FOR_STMT_CHECK (NODE), 0)
5397 #define RANGE_FOR_EXPR(NODE) TREE_OPERAND (RANGE_FOR_STMT_CHECK (NODE), 1)
5398 #define RANGE_FOR_BODY(NODE) TREE_OPERAND (RANGE_FOR_STMT_CHECK (NODE), 2)
5399 #define RANGE_FOR_SCOPE(NODE) TREE_OPERAND (RANGE_FOR_STMT_CHECK (NODE), 3)
5400 #define RANGE_FOR_UNROLL(NODE) TREE_OPERAND (RANGE_FOR_STMT_CHECK (NODE), 4)
5401 #define RANGE_FOR_INIT_STMT(NODE) TREE_OPERAND (RANGE_FOR_STMT_CHECK (NODE), 5)
5402 #define RANGE_FOR_IVDEP(NODE) TREE_LANG_FLAG_6 (RANGE_FOR_STMT_CHECK (NODE))
5403 #define RANGE_FOR_NOVECTOR(NODE) TREE_LANG_FLAG_5 (RANGE_FOR_STMT_CHECK (NODE))
5405 /* STMT_EXPR accessor. */
5406 #define STMT_EXPR_STMT(NODE) TREE_OPERAND (STMT_EXPR_CHECK (NODE), 0)
5408 /* EXPR_STMT accessor. This gives the expression associated with an
5409 expression statement. */
5410 #define EXPR_STMT_EXPR(NODE) TREE_OPERAND (EXPR_STMT_CHECK (NODE), 0)
5412 /* True if this TARGET_EXPR was created by build_cplus_new, and so we can
5413 discard it if it isn't useful. */
5414 #define TARGET_EXPR_IMPLICIT_P(NODE) \
5415 TREE_LANG_FLAG_0 (TARGET_EXPR_CHECK (NODE))
5417 /* True if this TARGET_EXPR is the result of list-initialization of a
5418 temporary. */
5419 #define TARGET_EXPR_LIST_INIT_P(NODE) \
5420 TREE_LANG_FLAG_1 (TARGET_EXPR_CHECK (NODE))
5422 /* True if this TARGET_EXPR expresses direct-initialization of an object
5423 to be named later. */
5424 #define TARGET_EXPR_DIRECT_INIT_P(NODE) \
5425 TREE_LANG_FLAG_2 (TARGET_EXPR_CHECK (NODE))
5427 /* True if we expect this TARGET_EXPR to be used as an initializer, not to
5428 materialize as a temporary. */
5429 #define TARGET_EXPR_ELIDING_P(NODE) \
5430 TREE_LANG_FLAG_3 (TARGET_EXPR_CHECK (NODE))
5432 /* True if NODE is a TARGET_EXPR that just expresses a copy of its INITIAL; if
5433 the initializer has void type, it's doing something more complicated. */
5434 #define SIMPLE_TARGET_EXPR_P(NODE) \
5435 (TREE_CODE (NODE) == TARGET_EXPR \
5436 && TARGET_EXPR_INITIAL (NODE) \
5437 && !VOID_TYPE_P (TREE_TYPE (TARGET_EXPR_INITIAL (NODE))))
5439 /* True if T is a TARGET_EXPR for which we'll need to replace_decl to use it as
5440 an initializer. */
5441 inline bool
5442 target_expr_needs_replace (tree t)
5444 if (!t || TREE_CODE (t) != TARGET_EXPR)
5445 return false;
5446 tree init = TARGET_EXPR_INITIAL (t);
5447 if (!init || !VOID_TYPE_P (TREE_TYPE (init)))
5448 return false;
5449 while (TREE_CODE (init) == COMPOUND_EXPR)
5450 init = TREE_OPERAND (init, 1);
5451 return (TREE_CODE (init) != AGGR_INIT_EXPR
5452 && TREE_CODE (init) != VEC_INIT_EXPR);
5455 /* True if EXPR expresses direct-initialization of a TYPE. */
5456 #define DIRECT_INIT_EXPR_P(TYPE,EXPR) \
5457 (TREE_CODE (EXPR) == TARGET_EXPR && TREE_LANG_FLAG_2 (EXPR) \
5458 && same_type_ignoring_top_level_qualifiers_p (TYPE, TREE_TYPE (EXPR)))
5460 /* True if this CONVERT_EXPR is for a conversion to virtual base in
5461 an NSDMI, and should be re-evaluated when used in a constructor. */
5462 #define CONVERT_EXPR_VBASE_PATH(NODE) \
5463 TREE_LANG_FLAG_0 (CONVERT_EXPR_CHECK (NODE))
5465 /* True if SIZEOF_EXPR argument is type. */
5466 #define SIZEOF_EXPR_TYPE_P(NODE) \
5467 TREE_LANG_FLAG_0 (SIZEOF_EXPR_CHECK (NODE))
5469 /* True if the ALIGNOF_EXPR was spelled "alignof". */
5470 #define ALIGNOF_EXPR_STD_P(NODE) \
5471 TREE_LANG_FLAG_0 (ALIGNOF_EXPR_CHECK (NODE))
5473 /* OMP_DEPOBJ accessors. These give access to the depobj expression of the
5474 #pragma omp depobj directive and the clauses, respectively. If
5475 OMP_DEPOBJ_CLAUSES is INTEGER_CST, it is instead the update clause kind
5476 or OMP_CLAUSE_DEPEND_LAST for destroy clause. */
5477 #define OMP_DEPOBJ_DEPOBJ(NODE) TREE_OPERAND (OMP_DEPOBJ_CHECK (NODE), 0)
5478 #define OMP_DEPOBJ_CLAUSES(NODE) TREE_OPERAND (OMP_DEPOBJ_CHECK (NODE), 1)
5480 /* An enumeration of the kind of tags that C++ accepts. */
5481 enum tag_types {
5482 none_type = 0, /* Not a tag type. */
5483 record_type, /* "struct" types. */
5484 class_type, /* "class" types. */
5485 union_type, /* "union" types. */
5486 enum_type, /* "enum" types. */
5487 typename_type, /* "typename" types. */
5488 scope_type /* namespace or tagged type name followed by :: */
5491 /* The various kinds of lvalues we distinguish. */
5492 enum cp_lvalue_kind_flags {
5493 clk_none = 0, /* Things that are not an lvalue. */
5494 clk_ordinary = 1, /* An ordinary lvalue. */
5495 clk_rvalueref = 2,/* An xvalue (rvalue formed using an rvalue reference) */
5496 clk_class = 4, /* A prvalue of class or array type. */
5497 clk_bitfield = 8, /* An lvalue for a bit-field. */
5498 clk_packed = 16, /* An lvalue for a packed field. */
5499 clk_implicit_rval = 1<<5 /* An lvalue being treated as an xvalue. */
5502 /* This type is used for parameters and variables which hold
5503 combinations of the flags in enum cp_lvalue_kind_flags. */
5504 typedef int cp_lvalue_kind;
5506 /* Various kinds of template specialization, instantiation, etc. */
5507 enum tmpl_spec_kind {
5508 tsk_none, /* Not a template at all. */
5509 tsk_invalid_member_spec, /* An explicit member template
5510 specialization, but the enclosing
5511 classes have not all been explicitly
5512 specialized. */
5513 tsk_invalid_expl_inst, /* An explicit instantiation containing
5514 template parameter lists. */
5515 tsk_excessive_parms, /* A template declaration with too many
5516 template parameter lists. */
5517 tsk_insufficient_parms, /* A template declaration with too few
5518 parameter lists. */
5519 tsk_template, /* A template declaration. */
5520 tsk_expl_spec, /* An explicit specialization. */
5521 tsk_expl_inst /* An explicit instantiation. */
5524 /* The various kinds of access. BINFO_ACCESS depends on these being
5525 two bit quantities. The numerical values are important; they are
5526 used to initialize RTTI data structures, so changing them changes
5527 the ABI. */
5528 enum access_kind {
5529 ak_none = 0, /* Inaccessible. */
5530 ak_public = 1, /* Accessible, as a `public' thing. */
5531 ak_protected = 2, /* Accessible, as a `protected' thing. */
5532 ak_private = 3 /* Accessible, as a `private' thing. */
5535 /* The various kinds of special functions. If you add to this list,
5536 you should update special_function_p as well. */
5537 enum special_function_kind {
5538 sfk_none = 0, /* Not a special function. This enumeral
5539 must have value zero; see
5540 special_function_p. */
5541 /* The following are ordered, for use by member synthesis fns. */
5542 sfk_destructor, /* A destructor. */
5543 sfk_constructor, /* A constructor. */
5544 sfk_inheriting_constructor, /* An inheriting constructor */
5545 sfk_copy_constructor, /* A copy constructor. */
5546 sfk_move_constructor, /* A move constructor. */
5547 sfk_copy_assignment, /* A copy assignment operator. */
5548 sfk_move_assignment, /* A move assignment operator. */
5549 /* The following are unordered. */
5550 sfk_complete_destructor, /* A destructor for complete objects. */
5551 sfk_base_destructor, /* A destructor for base subobjects. */
5552 sfk_deleting_destructor, /* A destructor for complete objects that
5553 deletes the object after it has been
5554 destroyed. */
5555 sfk_conversion, /* A conversion operator. */
5556 sfk_deduction_guide, /* A class template deduction guide. */
5557 sfk_comparison, /* A comparison operator (e.g. ==, <, <=>). */
5558 sfk_virtual_destructor /* Used by member synthesis fns. */
5561 /* The various kinds of linkage. From [basic.link],
5563 A name is said to have linkage when it might denote the same
5564 object, reference, function, type, template, namespace or value
5565 as a name introduced in another scope:
5567 -- When a name has external linkage, the entity it denotes can
5568 be referred to from scopes of other translation units or from
5569 other scopes of the same translation unit.
5571 -- When a name has internal linkage, the entity it denotes can
5572 be referred to by names from other scopes in the same
5573 translation unit.
5575 -- When a name has no linkage, the entity it denotes cannot be
5576 referred to by names from other scopes. */
5578 enum linkage_kind {
5579 lk_none, /* No linkage. */
5580 lk_internal, /* Internal linkage. */
5581 lk_external /* External linkage. */
5584 enum duration_kind {
5585 dk_static,
5586 dk_thread,
5587 dk_auto,
5588 dk_dynamic
5591 /* Bitmask flags to control type substitution. */
5592 enum tsubst_flags {
5593 tf_none = 0, /* nothing special */
5594 tf_error = 1 << 0, /* give error messages */
5595 tf_warning = 1 << 1, /* give warnings too */
5596 tf_ignore_bad_quals = 1 << 2, /* ignore bad cvr qualifiers */
5597 tf_keep_type_decl = 1 << 3, /* retain typedef type decls
5598 (make_typename_type use) */
5599 tf_ptrmem_ok = 1 << 4, /* pointers to member ok (internal
5600 instantiate_type use) */
5601 tf_user = 1 << 5, /* found template must be a user template
5602 (lookup_template_class use) */
5603 tf_conv = 1 << 6, /* We are determining what kind of
5604 conversion might be permissible,
5605 not actually performing the
5606 conversion. */
5607 tf_decltype = 1 << 7, /* We are the operand of decltype.
5608 Used to implement the special rules
5609 for calls in decltype (5.2.2/11). */
5610 tf_partial = 1 << 8, /* Doing initial explicit argument
5611 substitution in fn_type_unification. */
5612 tf_fndecl_type = 1 << 9, /* Substituting the type of a function
5613 declaration. */
5614 tf_no_cleanup = 1 << 10, /* Do not build a cleanup
5615 (build_target_expr and friends) */
5616 tf_norm = 1 << 11, /* Build diagnostic information during
5617 constraint normalization. */
5618 tf_tst_ok = 1 << 12, /* Allow a typename-specifier to name
5619 a template (C++17 or later). */
5620 tf_dguide = 1 << 13, /* Building a deduction guide from a ctor. */
5621 tf_qualifying_scope = 1 << 14, /* Substituting the LHS of the :: operator.
5622 Affects TYPENAME_TYPE resolution from
5623 make_typename_type. */
5624 /* Convenient substitution flags combinations. */
5625 tf_warning_or_error = tf_warning | tf_error
5628 /* This type is used for parameters and variables which hold
5629 combinations of the flags in enum tsubst_flags. */
5630 typedef int tsubst_flags_t;
5632 /* The kind of checking we can do looking in a class hierarchy. */
5633 enum base_access_flags {
5634 ba_any = 0, /* Do not check access, allow an ambiguous base,
5635 prefer a non-virtual base */
5636 ba_unique = 1 << 0, /* Must be a unique base. */
5637 ba_check_bit = 1 << 1, /* Check access. */
5638 ba_check = ba_unique | ba_check_bit,
5639 ba_ignore_scope = 1 << 2 /* Ignore access allowed by local scope. */
5642 /* This type is used for parameters and variables which hold
5643 combinations of the flags in enum base_access_flags. */
5644 typedef int base_access;
5646 /* The various kinds of access check during parsing. */
5647 enum deferring_kind {
5648 dk_no_deferred = 0, /* Check access immediately */
5649 dk_deferred = 1, /* Deferred check */
5650 dk_no_check = 2 /* No access check */
5653 /* The kind of base we can find, looking in a class hierarchy.
5654 Values <0 indicate we failed. */
5655 enum base_kind {
5656 bk_inaccessible = -3, /* The base is inaccessible */
5657 bk_ambig = -2, /* The base is ambiguous */
5658 bk_not_base = -1, /* It is not a base */
5659 bk_same_type = 0, /* It is the same type */
5660 bk_proper_base = 1, /* It is a proper base */
5661 bk_via_virtual = 2 /* It is a proper base, but via a virtual
5662 path. This might not be the canonical
5663 binfo. */
5666 /* Node for "pointer to (virtual) function".
5667 This may be distinct from ptr_type_node so gdb can distinguish them. */
5668 #define vfunc_ptr_type_node vtable_entry_type
5671 /* For building calls to `delete'. */
5672 extern GTY(()) tree integer_two_node;
5674 /* The number of function bodies which we are currently processing.
5675 (Zero if we are at namespace scope, one inside the body of a
5676 function, two inside the body of a function in a local class, etc.) */
5677 extern int function_depth;
5679 /* Nonzero if we are inside spec_hasher::equal, which affects
5680 comparison of PARM_DECLs in cp_tree_equal. */
5681 extern int comparing_specializations;
5683 /* Nonzero if we want different dependent aliases to compare as unequal.
5684 FIXME we should always do this except during deduction/ordering. */
5685 extern int comparing_dependent_aliases;
5687 /* Nonzero if we want to consider different member expressions to compare
5688 equal if they designate the same entity. This is set when comparing
5689 contract conditions of overrides. */
5690 extern bool comparing_override_contracts;
5692 /* In parser.cc. */
5694 /* Nonzero if we are parsing an unevaluated operand: an operand to
5695 sizeof, typeof, or alignof. This is a count since operands to
5696 sizeof can be nested. */
5698 extern int cp_unevaluated_operand;
5700 /* RAII class used to inhibit the evaluation of operands during parsing
5701 and template instantiation. Evaluation warnings are also inhibited. */
5703 class cp_unevaluated
5705 public:
5706 cp_unevaluated ();
5707 ~cp_unevaluated ();
5710 /* The reverse: an RAII class used for nested contexts that are evaluated even
5711 if the enclosing context is not. */
5713 class cp_evaluated
5715 public:
5716 int uneval;
5717 int inhibit;
5718 cp_evaluated (bool reset = true)
5719 : uneval(cp_unevaluated_operand), inhibit(c_inhibit_evaluation_warnings)
5720 { if (reset)
5721 cp_unevaluated_operand = c_inhibit_evaluation_warnings = 0; }
5722 ~cp_evaluated ()
5723 { cp_unevaluated_operand = uneval;
5724 c_inhibit_evaluation_warnings = inhibit; }
5727 /* in pt.cc */
5729 /* These values are used for the `STRICT' parameter to type_unification and
5730 fn_type_unification. Their meanings are described with the
5731 documentation for fn_type_unification. */
5733 enum unification_kind_t {
5734 DEDUCE_CALL,
5735 DEDUCE_CONV,
5736 DEDUCE_EXACT
5739 // An RAII class used to create a new pointer map for local
5740 // specializations. When the stack goes out of scope, the
5741 // previous pointer map is restored.
5742 enum lss_policy { lss_blank, lss_copy, lss_nop };
5743 class local_specialization_stack
5745 public:
5746 local_specialization_stack (lss_policy = lss_blank);
5747 ~local_specialization_stack ();
5749 hash_map<tree, tree> *saved;
5752 /* Entry in the specialization hash table. */
5753 struct GTY((for_user)) spec_entry
5755 tree tmpl; /* The general template this is a specialization of. */
5756 tree args; /* The args for this (maybe-partial) specialization. */
5757 tree spec; /* The specialization itself. */
5760 /* in class.cc */
5762 extern int current_class_depth;
5764 /* in decl.cc */
5766 /* An array of static vars & fns. */
5767 extern GTY(()) vec<tree, va_gc> *static_decls;
5769 /* An array of vtable-needing types that have no key function, or have
5770 an emitted key function. */
5771 extern GTY(()) vec<tree, va_gc> *keyed_classes;
5773 /* Here's where we control how name mangling takes place. */
5775 /* Cannot use '$' up front, because this confuses gdb
5776 (names beginning with '$' are gdb-local identifiers).
5778 Note that all forms in which the '$' is significant are long enough
5779 for direct indexing (meaning that if we know there is a '$'
5780 at a particular location, we can index into the string at
5781 any other location that provides distinguishing characters). */
5783 /* Define NO_DOT_IN_LABEL in your favorite tm file if your assembler
5784 doesn't allow '.' in symbol names. */
5785 #ifndef NO_DOT_IN_LABEL
5787 #define JOINER '.'
5788 #define JOIN_STR "."
5790 #define AUTO_TEMP_NAME "_.tmp_"
5791 #define VFIELD_BASE ".vf"
5792 #define VFIELD_NAME "_vptr."
5793 #define VFIELD_NAME_FORMAT "_vptr.%s"
5795 #else /* NO_DOT_IN_LABEL */
5797 #ifndef NO_DOLLAR_IN_LABEL
5799 #define JOINER '$'
5800 #define JOIN_STR "$"
5802 #define AUTO_TEMP_NAME "_$tmp_"
5803 #define VFIELD_BASE "$vf"
5804 #define VFIELD_NAME "_vptr$"
5805 #define VFIELD_NAME_FORMAT "_vptr$%s"
5807 #else /* NO_DOLLAR_IN_LABEL */
5809 #define JOIN_STR "_"
5811 #define VTABLE_NAME "__vt_"
5812 #define VTABLE_NAME_P(ID_NODE) \
5813 (!strncmp (IDENTIFIER_POINTER (ID_NODE), VTABLE_NAME, \
5814 sizeof (VTABLE_NAME) - 1))
5815 #define VFIELD_BASE "__vfb"
5816 #define VFIELD_NAME "__vptr_"
5817 #define VFIELD_NAME_P(ID_NODE) \
5818 (!strncmp (IDENTIFIER_POINTER (ID_NODE), VFIELD_NAME, \
5819 sizeof (VFIELD_NAME) - 1))
5820 #define VFIELD_NAME_FORMAT "__vptr_%s"
5822 #endif /* NO_DOLLAR_IN_LABEL */
5823 #endif /* NO_DOT_IN_LABEL */
5825 #define UDLIT_OP_ANSI_PREFIX "operator\"\""
5826 #define UDLIT_OP_ANSI_FORMAT UDLIT_OP_ANSI_PREFIX "%s"
5827 #define UDLIT_OP_MANGLED_PREFIX "li"
5828 #define UDLIT_OP_MANGLED_FORMAT UDLIT_OP_MANGLED_PREFIX "%s"
5829 #define UDLIT_OPER_P(ID_NODE) \
5830 (!strncmp (IDENTIFIER_POINTER (ID_NODE), \
5831 UDLIT_OP_ANSI_PREFIX, \
5832 sizeof (UDLIT_OP_ANSI_PREFIX) - 1))
5833 #define UDLIT_OP_SUFFIX(ID_NODE) \
5834 (IDENTIFIER_POINTER (ID_NODE) + sizeof (UDLIT_OP_ANSI_PREFIX) - 1)
5836 #if !defined(NO_DOLLAR_IN_LABEL) || !defined(NO_DOT_IN_LABEL)
5838 #define VTABLE_NAME_P(ID_NODE) (IDENTIFIER_POINTER (ID_NODE)[1] == 'v' \
5839 && IDENTIFIER_POINTER (ID_NODE)[2] == 't' \
5840 && IDENTIFIER_POINTER (ID_NODE)[3] == JOINER)
5842 #define VFIELD_NAME_P(ID_NODE) \
5843 (!strncmp (IDENTIFIER_POINTER (ID_NODE), VFIELD_NAME, sizeof(VFIELD_NAME)-1))
5845 #endif /* !defined(NO_DOLLAR_IN_LABEL) || !defined(NO_DOT_IN_LABEL) */
5848 /* Nonzero if we're done parsing and into end-of-file activities.
5849 Two if we're done with front-end processing. */
5851 extern int at_eof;
5853 /* True if note_mangling_alias should enqueue mangling aliases for
5854 later generation, rather than emitting them right away. */
5856 extern bool defer_mangling_aliases;
5858 /* True if noexcept is part of the type (i.e. in C++17). */
5860 extern bool flag_noexcept_type;
5862 /* A list of namespace-scope objects which have constructors or
5863 destructors which reside in the global scope. The decl is stored
5864 in the TREE_VALUE slot and the initializer is stored in the
5865 TREE_PURPOSE slot. */
5866 extern GTY(()) tree static_aggregates;
5867 /* Likewise, for thread local storage. */
5868 extern GTY(()) tree tls_aggregates;
5870 /* A hash-map mapping from variable decls to the dynamic initializer for
5871 the decl. This is currently only used by OpenMP. */
5872 extern GTY(()) decl_tree_map *dynamic_initializers;
5874 enum overload_flags { NO_SPECIAL = 0, DTOR_FLAG, TYPENAME_FLAG };
5876 /* These are uses as bits in flags passed to various functions to
5877 control their behavior. Despite the LOOKUP_ prefix, many of these
5878 do not control name lookup. ??? Functions using these flags should
5879 probably be modified to accept explicit boolean flags for the
5880 behaviors relevant to them. */
5881 /* Check for access violations. */
5882 #define LOOKUP_PROTECT (1 << 0)
5883 #define LOOKUP_NORMAL (LOOKUP_PROTECT)
5884 /* Even if the function found by lookup is a virtual function, it
5885 should be called directly. */
5886 #define LOOKUP_NONVIRTUAL (1 << 1)
5887 /* Non-converting (i.e., "explicit") constructors are not tried. This flag
5888 indicates that we are not performing direct-initialization. */
5889 #define LOOKUP_ONLYCONVERTING (1 << 2)
5890 #define LOOKUP_IMPLICIT (LOOKUP_NORMAL | LOOKUP_ONLYCONVERTING)
5891 /* If a temporary is created, it should be created so that it lives
5892 as long as the current variable bindings; otherwise it only lives
5893 until the end of the complete-expression. It also forces
5894 direct-initialization in cases where other parts of the compiler
5895 have already generated a temporary, such as reference
5896 initialization and the catch parameter. */
5897 #define DIRECT_BIND (1 << 3)
5898 /* We're performing a user-defined conversion, so more user-defined
5899 conversions are not permitted (only built-in conversions). */
5900 #define LOOKUP_NO_CONVERSION (1 << 4)
5901 /* The user has explicitly called a destructor. (Therefore, we do
5902 not need to check that the object is non-NULL before calling the
5903 destructor.) */
5904 #define LOOKUP_DESTRUCTOR (1 << 5)
5905 /* Do not permit references to bind to temporaries. */
5906 #define LOOKUP_NO_TEMP_BIND (1 << 6)
5907 /* We're inside an init-list, so narrowing conversions are ill-formed. */
5908 #define LOOKUP_NO_NARROWING (LOOKUP_NO_TEMP_BIND << 1)
5909 /* We're looking up a constructor for list-initialization. */
5910 #define LOOKUP_LIST_INIT_CTOR (LOOKUP_NO_NARROWING << 1)
5911 /* This is the first parameter of a copy constructor. */
5912 #define LOOKUP_COPY_PARM (LOOKUP_LIST_INIT_CTOR << 1)
5913 /* We only want to consider list constructors. */
5914 #define LOOKUP_LIST_ONLY (LOOKUP_COPY_PARM << 1)
5915 /* Return after determining which function to call and checking access.
5916 Used by sythesized_method_walk to determine which functions will
5917 be called to initialize subobjects, in order to determine exception
5918 specification and possible implicit delete.
5919 This is kind of a hack, but exiting early avoids problems with trying
5920 to perform argument conversions when the class isn't complete yet. */
5921 #define LOOKUP_SPECULATIVE (LOOKUP_LIST_ONLY << 1)
5922 /* Used by calls from defaulted functions to limit the overload set to avoid
5923 cycles trying to declare them (core issue 1092). */
5924 #define LOOKUP_DEFAULTED (LOOKUP_SPECULATIVE << 1)
5925 /* Used in calls to store_init_value to suppress its usual call to
5926 digest_init. */
5927 #define LOOKUP_ALREADY_DIGESTED (LOOKUP_DEFAULTED << 1)
5928 /* Like LOOKUP_NO_TEMP_BIND, but also prevent binding to xvalues. */
5929 #define LOOKUP_NO_RVAL_BIND (LOOKUP_ALREADY_DIGESTED << 1)
5930 /* Used by case_conversion to disregard non-integral conversions. */
5931 #define LOOKUP_NO_NON_INTEGRAL (LOOKUP_NO_RVAL_BIND << 1)
5932 /* Used for delegating constructors in order to diagnose self-delegation. */
5933 #define LOOKUP_DELEGATING_CONS (LOOKUP_NO_NON_INTEGRAL << 1)
5934 /* Allow initialization of a flexible array members. */
5935 #define LOOKUP_ALLOW_FLEXARRAY_INIT (LOOKUP_DELEGATING_CONS << 1)
5936 /* We're looking for either a rewritten comparison operator candidate or the
5937 operator to use on the former's result. We distinguish between the two by
5938 knowing that comparisons other than == and <=> must be the latter, as must
5939 a <=> expression trying to rewrite to <=> without reversing. */
5940 #define LOOKUP_REWRITTEN (LOOKUP_ALLOW_FLEXARRAY_INIT << 1)
5941 /* Reverse the order of the two arguments for comparison rewriting. First we
5942 swap the arguments in add_operator_candidates, then we swap the conversions
5943 in add_candidate (so that they correspond to the original order of the
5944 args), then we swap the conversions back in build_new_op_1 (so they
5945 correspond to the order of the args in the candidate). */
5946 #define LOOKUP_REVERSED (LOOKUP_REWRITTEN << 1)
5947 /* We're initializing an aggregate from a parenthesized list of values. */
5948 #define LOOKUP_AGGREGATE_PAREN_INIT (LOOKUP_REVERSED << 1)
5949 /* We're computing conversions as part of a first pass of overload resolution
5950 wherein we don't try to distinguish an unviable candidate from a
5951 non-strictly viable candidate and thus can avoid computing unnecessary
5952 bad conversions. */
5953 #define LOOKUP_SHORTCUT_BAD_CONVS (LOOKUP_AGGREGATE_PAREN_INIT << 1)
5955 /* These flags are used by the conversion code.
5956 CONV_IMPLICIT : Perform implicit conversions (standard and user-defined).
5957 CONV_STATIC : Perform the explicit conversions for static_cast.
5958 CONV_CONST : Perform the explicit conversions for const_cast.
5959 CONV_REINTERPRET: Perform the explicit conversions for reinterpret_cast.
5960 CONV_PRIVATE : Perform upcasts to private bases.
5961 CONV_FORCE_TEMP : Require a new temporary when converting to the same
5962 aggregate type. */
5964 #define CONV_IMPLICIT 1
5965 #define CONV_STATIC 2
5966 #define CONV_CONST 4
5967 #define CONV_REINTERPRET 8
5968 #define CONV_PRIVATE 16
5969 #define CONV_FORCE_TEMP 32
5970 #define CONV_FOLD 64
5971 #define CONV_OLD_CONVERT (CONV_IMPLICIT | CONV_STATIC | CONV_CONST \
5972 | CONV_REINTERPRET)
5973 #define CONV_C_CAST (CONV_IMPLICIT | CONV_STATIC | CONV_CONST \
5974 | CONV_REINTERPRET | CONV_PRIVATE | CONV_FORCE_TEMP)
5975 #define CONV_BACKEND_CONVERT (CONV_OLD_CONVERT | CONV_FOLD)
5977 /* Used by build_expr_type_conversion to indicate which types are
5978 acceptable as arguments to the expression under consideration. */
5980 #define WANT_INT 1 /* integer types, including bool */
5981 #define WANT_FLOAT 2 /* floating point types */
5982 #define WANT_ENUM 4 /* enumerated types */
5983 #define WANT_POINTER 8 /* pointer types */
5984 #define WANT_NULL 16 /* null pointer constant */
5985 #define WANT_VECTOR_OR_COMPLEX 32 /* vector or complex types */
5986 #define WANT_ARITH (WANT_INT | WANT_FLOAT | WANT_VECTOR_OR_COMPLEX)
5988 /* Used with comptypes, and related functions, to guide type
5989 comparison. */
5991 #define COMPARE_STRICT 0 /* Just check if the types are the
5992 same. */
5993 #define COMPARE_BASE 1 /* Check to see if the second type is
5994 derived from the first. */
5995 #define COMPARE_DERIVED 2 /* Like COMPARE_BASE, but in
5996 reverse. */
5997 #define COMPARE_REDECLARATION 4 /* The comparison is being done when
5998 another declaration of an existing
5999 entity is seen. */
6000 #define COMPARE_STRUCTURAL 8 /* The comparison is intended to be
6001 structural. The actual comparison
6002 will be identical to
6003 COMPARE_STRICT. */
6005 /* Used with start function. */
6006 #define SF_DEFAULT 0 /* No flags. */
6007 #define SF_PRE_PARSED 1 /* The function declaration has
6008 already been parsed. */
6009 #define SF_INCLASS_INLINE 2 /* The function is an inline, defined
6010 in the class body. */
6012 /* Used with start_decl's initialized parameter. */
6013 #define SD_UNINITIALIZED 0
6014 #define SD_INITIALIZED 1
6015 /* Like SD_INITIALIZED, but also mark the new decl as DECL_DECOMPOSITION_P. */
6016 #define SD_DECOMPOSITION 2
6017 #define SD_DEFAULTED 3
6018 #define SD_DELETED 4
6020 /* Returns nonzero iff TYPE1 and TYPE2 are the same type, or if TYPE2
6021 is derived from TYPE1, or if TYPE2 is a pointer (reference) to a
6022 class derived from the type pointed to (referred to) by TYPE1. */
6023 #define same_or_base_type_p(TYPE1, TYPE2) \
6024 comptypes ((TYPE1), (TYPE2), COMPARE_BASE)
6026 /* These macros are used to access a TEMPLATE_PARM_INDEX. */
6027 #define TEMPLATE_PARM_INDEX_CAST(NODE) \
6028 ((template_parm_index*)TEMPLATE_PARM_INDEX_CHECK (NODE))
6029 #define TEMPLATE_PARM_IDX(NODE) (TEMPLATE_PARM_INDEX_CAST (NODE)->index)
6030 #define TEMPLATE_PARM_LEVEL(NODE) (TEMPLATE_PARM_INDEX_CAST (NODE)->level)
6031 #define TEMPLATE_PARM_DESCENDANTS(NODE) (TREE_CHAIN (TEMPLATE_PARM_INDEX_CHECK (NODE)))
6032 #define TEMPLATE_PARM_ORIG_LEVEL(NODE) (TEMPLATE_PARM_INDEX_CAST (NODE)->orig_level)
6033 #define TEMPLATE_PARM_DECL(NODE) (TEMPLATE_PARM_INDEX_CAST (NODE)->decl)
6034 #define TEMPLATE_PARM_PARAMETER_PACK(NODE) \
6035 (TREE_LANG_FLAG_0 (TEMPLATE_PARM_INDEX_CHECK (NODE)))
6037 /* These macros are for accessing the fields of TEMPLATE_TYPE_PARM,
6038 TEMPLATE_TEMPLATE_PARM and BOUND_TEMPLATE_TEMPLATE_PARM nodes. */
6039 #define TEMPLATE_TYPE_PARM_INDEX(NODE) \
6040 (TYPE_VALUES_RAW (TREE_CHECK3 ((NODE), TEMPLATE_TYPE_PARM, \
6041 TEMPLATE_TEMPLATE_PARM, \
6042 BOUND_TEMPLATE_TEMPLATE_PARM)))
6043 #define TEMPLATE_TYPE_IDX(NODE) \
6044 (TEMPLATE_PARM_IDX (TEMPLATE_TYPE_PARM_INDEX (NODE)))
6045 #define TEMPLATE_TYPE_LEVEL(NODE) \
6046 (TEMPLATE_PARM_LEVEL (TEMPLATE_TYPE_PARM_INDEX (NODE)))
6047 #define TEMPLATE_TYPE_ORIG_LEVEL(NODE) \
6048 (TEMPLATE_PARM_ORIG_LEVEL (TEMPLATE_TYPE_PARM_INDEX (NODE)))
6049 #define TEMPLATE_TYPE_DESCENDANTS(NODE) \
6050 (TEMPLATE_PARM_DESCENDANTS (TEMPLATE_TYPE_PARM_INDEX (NODE)))
6051 #define TEMPLATE_TYPE_DECL(NODE) \
6052 (TEMPLATE_PARM_DECL (TEMPLATE_TYPE_PARM_INDEX (NODE)))
6053 #define TEMPLATE_TYPE_PARAMETER_PACK(NODE) \
6054 (TEMPLATE_PARM_PARAMETER_PACK (TEMPLATE_TYPE_PARM_INDEX (NODE)))
6056 /* For a C++17 class deduction placeholder, the template it represents. */
6057 #define CLASS_PLACEHOLDER_TEMPLATE(NODE) \
6058 (DECL_INITIAL (TYPE_NAME (TEMPLATE_TYPE_PARM_CHECK (NODE))))
6060 /* True iff the template parameters of this TEMPLATE_TEMPLATE_PARM don't
6061 use any outer template parameters. */
6062 #define TEMPLATE_TEMPLATE_PARM_SIMPLE_P(NODE) \
6063 (TYPE_LANG_FLAG_5 (TEMPLATE_TEMPLATE_PARM_CHECK (NODE)))
6065 /* Contexts in which auto deduction occurs. These flags are
6066 used to control diagnostics in do_auto_deduction. */
6068 enum auto_deduction_context
6070 adc_unspecified, /* Not given */
6071 adc_variable_type, /* Variable initializer deduction */
6072 adc_return_type, /* Return type deduction */
6073 adc_unify, /* Template argument deduction */
6074 adc_requirement, /* Argument deduction constraint */
6075 adc_decomp_type /* Decomposition declaration initializer deduction */
6078 /* True iff this TEMPLATE_TYPE_PARM represents decltype(auto). */
6079 #define AUTO_IS_DECLTYPE(NODE) \
6080 (TYPE_LANG_FLAG_5 (TEMPLATE_TYPE_PARM_CHECK (NODE)))
6082 /* These constants can used as bit flags in the process of tree formatting.
6084 TFF_PLAIN_IDENTIFIER: unqualified part of a name.
6085 TFF_SCOPE: include the class and namespace scope of the name.
6086 TFF_CHASE_TYPEDEF: print the original type-id instead of the typedef-name.
6087 TFF_DECL_SPECIFIERS: print decl-specifiers.
6088 TFF_CLASS_KEY_OR_ENUM: precede a class-type name (resp. enum name) with
6089 a class-key (resp. `enum').
6090 TFF_RETURN_TYPE: include function return type.
6091 TFF_FUNCTION_DEFAULT_ARGUMENTS: include function default parameter values.
6092 TFF_EXCEPTION_SPECIFICATION: show function exception specification.
6093 TFF_TEMPLATE_HEADER: show the template<...> header in a
6094 template-declaration.
6095 TFF_TEMPLATE_NAME: show only template-name.
6096 TFF_EXPR_IN_PARENS: parenthesize expressions.
6097 TFF_NO_FUNCTION_ARGUMENTS: don't show function arguments.
6098 TFF_UNQUALIFIED_NAME: do not print the qualifying scope of the
6099 top-level entity.
6100 TFF_NO_OMIT_DEFAULT_TEMPLATE_ARGUMENTS: do not omit template arguments
6101 identical to their defaults.
6102 TFF_NO_TEMPLATE_BINDINGS: do not print information about the template
6103 arguments for a function template specialization.
6104 TFF_POINTER: we are printing a pointer type. */
6106 #define TFF_PLAIN_IDENTIFIER (0)
6107 #define TFF_SCOPE (1)
6108 #define TFF_CHASE_TYPEDEF (1 << 1)
6109 #define TFF_DECL_SPECIFIERS (1 << 2)
6110 #define TFF_CLASS_KEY_OR_ENUM (1 << 3)
6111 #define TFF_RETURN_TYPE (1 << 4)
6112 #define TFF_FUNCTION_DEFAULT_ARGUMENTS (1 << 5)
6113 #define TFF_EXCEPTION_SPECIFICATION (1 << 6)
6114 #define TFF_TEMPLATE_HEADER (1 << 7)
6115 #define TFF_TEMPLATE_NAME (1 << 8)
6116 #define TFF_EXPR_IN_PARENS (1 << 9)
6117 #define TFF_NO_FUNCTION_ARGUMENTS (1 << 10)
6118 #define TFF_UNQUALIFIED_NAME (1 << 11)
6119 #define TFF_NO_OMIT_DEFAULT_TEMPLATE_ARGUMENTS (1 << 12)
6120 #define TFF_NO_TEMPLATE_BINDINGS (1 << 13)
6121 #define TFF_POINTER (1 << 14)
6123 /* These constants can be used as bit flags to control strip_typedefs.
6125 STF_USER_VISIBLE: use heuristics to try to avoid stripping user-facing
6126 aliases of internal details. This is intended for diagnostics,
6127 where it should (for example) give more useful "aka" types.
6129 STF_STRIP_DEPENDENT: allow the stripping of aliases with dependent
6130 template parameters, relying on code elsewhere to report any
6131 appropriate diagnostics. */
6132 const unsigned int STF_USER_VISIBLE = 1U;
6133 const unsigned int STF_STRIP_DEPENDENT = 1U << 1;
6135 /* Returns the TEMPLATE_DECL associated to a TEMPLATE_TEMPLATE_PARM
6136 node. */
6137 #define TEMPLATE_TEMPLATE_PARM_TEMPLATE_DECL(NODE) \
6138 ((TREE_CODE (NODE) == BOUND_TEMPLATE_TEMPLATE_PARM) \
6139 ? TYPE_TI_TEMPLATE (NODE) \
6140 : TYPE_NAME (TEMPLATE_TEMPLATE_PARM_CHECK (NODE)))
6142 /* in lex.cc */
6144 extern void init_reswords (void);
6146 /* Various flags for the overloaded operator information. */
6147 enum ovl_op_flags {
6148 OVL_OP_FLAG_NONE = 0, /* Don't care. */
6149 OVL_OP_FLAG_UNARY = 1, /* Is unary. */
6150 OVL_OP_FLAG_BINARY = 2, /* Is binary. */
6151 OVL_OP_FLAG_AMBIARY = 3, /* May be unary or binary. */
6152 OVL_OP_FLAG_ALLOC = 4, /* operator new or delete. */
6153 OVL_OP_FLAG_DELETE = 1, /* operator delete. */
6154 OVL_OP_FLAG_VEC = 2 /* vector new or delete. */
6157 /* Compressed operator codes. Order is determined by operators.def
6158 and does not match that of tree_codes. */
6159 enum ovl_op_code {
6160 OVL_OP_ERROR_MARK,
6161 OVL_OP_NOP_EXPR,
6162 #define DEF_OPERATOR(NAME, CODE, MANGLING, FLAGS) OVL_OP_##CODE,
6163 #define DEF_ASSN_OPERATOR(NAME, CODE, MANGLING) /* NOTHING */
6164 #include "operators.def"
6165 OVL_OP_MAX
6168 /* Make sure it fits in lang_decl_fn::ovl_op_code. */
6169 STATIC_ASSERT (OVL_OP_MAX < (1 << 6));
6171 struct GTY(()) ovl_op_info_t {
6172 /* The IDENTIFIER_NODE for the operator. */
6173 tree identifier;
6174 /* The name of the operator. */
6175 const char *name;
6176 /* The mangled name of the operator. */
6177 const char *mangled_name;
6178 /* The (regular) tree code. */
6179 enum tree_code tree_code : 16;
6180 /* The (compressed) operator code. */
6181 enum ovl_op_code ovl_op_code : 8;
6182 /* The ovl_op_flags of the operator */
6183 unsigned flags : 8;
6186 /* Overloaded operator info indexed by ass_op_p & ovl_op_code. */
6187 extern GTY(()) ovl_op_info_t ovl_op_info[2][OVL_OP_MAX];
6188 /* Mapping from tree_codes to ovl_op_codes. */
6189 extern GTY(()) unsigned char ovl_op_mapping[MAX_TREE_CODES];
6190 /* Mapping for ambi-ary operators from the binary to the unary. */
6191 extern GTY(()) unsigned char ovl_op_alternate[OVL_OP_MAX];
6193 /* Given an ass_op_p boolean and a tree code, return a pointer to its
6194 overloaded operator info. Tree codes for non-overloaded operators
6195 map to the error-operator. */
6196 #define OVL_OP_INFO(IS_ASS_P, TREE_CODE) \
6197 (&ovl_op_info[(IS_ASS_P) != 0][ovl_op_mapping[(TREE_CODE)]])
6198 /* Overloaded operator info for an identifier for which
6199 IDENTIFIER_OVL_OP_P is true. */
6200 #define IDENTIFIER_OVL_OP_INFO(NODE) \
6201 (&ovl_op_info[IDENTIFIER_KIND_BIT_0 (NODE)][IDENTIFIER_CP_INDEX (NODE)])
6202 #define IDENTIFIER_OVL_OP_FLAGS(NODE) \
6203 (IDENTIFIER_OVL_OP_INFO (NODE)->flags)
6205 inline tree ovl_op_identifier (bool isass, tree_code code)
6206 { return OVL_OP_INFO(isass, code)->identifier; }
6207 inline tree ovl_op_identifier (tree_code code) { return ovl_op_identifier (false, code); }
6208 #define assign_op_identifier (ovl_op_info[true][OVL_OP_NOP_EXPR].identifier)
6209 #define call_op_identifier (ovl_op_info[false][OVL_OP_CALL_EXPR].identifier)
6211 /* A type-qualifier, or bitmask therefore, using the TYPE_QUAL
6212 constants. */
6214 typedef int cp_cv_quals;
6216 /* Non-static member functions have an optional virt-specifier-seq.
6217 There is a VIRT_SPEC value for each virt-specifier.
6218 They can be combined by bitwise-or to form the complete set of
6219 virt-specifiers for a member function. */
6220 enum virt_specifier
6222 VIRT_SPEC_UNSPECIFIED = 0x0,
6223 VIRT_SPEC_FINAL = 0x1,
6224 VIRT_SPEC_OVERRIDE = 0x2
6227 /* A type-qualifier, or bitmask therefore, using the VIRT_SPEC
6228 constants. */
6230 typedef int cp_virt_specifiers;
6232 /* Wherever there is a function-cv-qual, there could also be a ref-qualifier:
6234 [dcl.fct]
6235 The return type, the parameter-type-list, the ref-qualifier, and
6236 the cv-qualifier-seq, but not the default arguments or the exception
6237 specification, are part of the function type.
6239 REF_QUAL_NONE Ordinary member function with no ref-qualifier
6240 REF_QUAL_LVALUE Member function with the &-ref-qualifier
6241 REF_QUAL_RVALUE Member function with the &&-ref-qualifier */
6243 enum cp_ref_qualifier {
6244 REF_QUAL_NONE = 0,
6245 REF_QUAL_LVALUE = 1,
6246 REF_QUAL_RVALUE = 2
6249 /* A storage class. */
6251 enum cp_storage_class {
6252 /* sc_none must be zero so that zeroing a cp_decl_specifier_seq
6253 sets the storage_class field to sc_none. */
6254 sc_none = 0,
6255 sc_auto,
6256 sc_register,
6257 sc_static,
6258 sc_extern,
6259 sc_mutable
6262 /* An individual decl-specifier. This is used to index the array of
6263 locations for the declspecs in struct cp_decl_specifier_seq
6264 below. */
6266 enum cp_decl_spec {
6267 ds_first,
6268 ds_signed = ds_first,
6269 ds_unsigned,
6270 ds_short,
6271 ds_long,
6272 ds_const,
6273 ds_volatile,
6274 ds_restrict,
6275 ds_inline,
6276 ds_virtual,
6277 ds_explicit,
6278 ds_friend,
6279 ds_typedef,
6280 ds_alias,
6281 ds_constexpr,
6282 ds_complex,
6283 ds_constinit,
6284 ds_consteval,
6285 ds_thread,
6286 ds_type_spec,
6287 ds_redefined_builtin_type_spec,
6288 ds_attribute,
6289 ds_std_attribute,
6290 ds_storage_class,
6291 ds_long_long,
6292 ds_concept,
6293 ds_last /* This enumerator must always be the last one. */
6296 /* A decl-specifier-seq. */
6298 struct cp_decl_specifier_seq {
6299 /* An array of locations for the declaration sepecifiers, indexed by
6300 enum cp_decl_spec_word. */
6301 location_t locations[ds_last];
6302 /* The primary type, if any, given by the decl-specifier-seq.
6303 Modifiers, like "short", "const", and "unsigned" are not
6304 reflected here. This field will be a TYPE, unless a typedef-name
6305 was used, in which case it will be a TYPE_DECL. */
6306 tree type;
6307 /* The attributes, if any, provided with the specifier sequence. */
6308 tree attributes;
6309 /* The c++11 attributes that follows the type specifier. */
6310 tree std_attributes;
6311 /* If non-NULL, a built-in type that the user attempted to redefine
6312 to some other type. */
6313 tree redefined_builtin_type;
6314 /* The explicit-specifier, if any. */
6315 tree explicit_specifier;
6316 /* The storage class specified -- or sc_none if no storage class was
6317 explicitly specified. */
6318 cp_storage_class storage_class;
6319 /* For the __intN declspec, this stores the index into the int_n_* arrays. */
6320 int int_n_idx;
6321 /* True iff TYPE_SPEC defines a class or enum. */
6322 BOOL_BITFIELD type_definition_p : 1;
6323 /* True iff multiple types were (erroneously) specified for this
6324 decl-specifier-seq. */
6325 BOOL_BITFIELD multiple_types_p : 1;
6326 /* True iff multiple storage classes were (erroneously) specified
6327 for this decl-specifier-seq or a combination of a storage class
6328 with a typedef specifier. */
6329 BOOL_BITFIELD conflicting_specifiers_p : 1;
6330 /* True iff at least one decl-specifier was found. */
6331 BOOL_BITFIELD any_specifiers_p : 1;
6332 /* True iff at least one type-specifier was found. */
6333 BOOL_BITFIELD any_type_specifiers_p : 1;
6334 /* True iff "int" was explicitly provided. */
6335 BOOL_BITFIELD explicit_int_p : 1;
6336 /* True iff "__intN" was explicitly provided. */
6337 BOOL_BITFIELD explicit_intN_p : 1;
6338 /* True iff "char" was explicitly provided. */
6339 BOOL_BITFIELD explicit_char_p : 1;
6340 /* True iff ds_thread is set for __thread, not thread_local. */
6341 BOOL_BITFIELD gnu_thread_keyword_p : 1;
6342 /* True iff the type is a decltype. */
6343 BOOL_BITFIELD decltype_p : 1;
6344 /* True iff the alternate "__intN__" form of the __intN type has been
6345 used. */
6346 BOOL_BITFIELD int_n_alt: 1;
6349 /* The various kinds of declarators. */
6351 enum cp_declarator_kind {
6352 cdk_id,
6353 cdk_function,
6354 cdk_array,
6355 cdk_pointer,
6356 cdk_reference,
6357 cdk_ptrmem,
6358 cdk_decomp,
6359 cdk_error
6362 /* A declarator. */
6364 typedef struct cp_declarator cp_declarator;
6366 typedef struct cp_parameter_declarator cp_parameter_declarator;
6368 /* A parameter, before it has been semantically analyzed. */
6369 struct cp_parameter_declarator {
6370 /* The next parameter, or NULL_TREE if none. */
6371 cp_parameter_declarator *next;
6372 /* The decl-specifiers-seq for the parameter. */
6373 cp_decl_specifier_seq decl_specifiers;
6374 /* The declarator for the parameter. */
6375 cp_declarator *declarator;
6376 /* The default-argument expression, or NULL_TREE, if none. */
6377 tree default_argument;
6378 /* True iff this is a template parameter pack. */
6379 bool template_parameter_pack_p;
6380 /* Location within source. */
6381 location_t loc;
6384 /* A declarator. */
6385 struct cp_declarator {
6386 /* The kind of declarator. */
6387 ENUM_BITFIELD (cp_declarator_kind) kind : 4;
6388 /* Whether we parsed an ellipsis (`...') just before the declarator,
6389 to indicate this is a parameter pack. */
6390 BOOL_BITFIELD parameter_pack_p : 1;
6391 /* If this declarator is parenthesized, this the open-paren. It is
6392 UNKNOWN_LOCATION when not parenthesized. */
6393 location_t parenthesized;
6394 /* Currently only set for cdk_id, cdk_decomp and cdk_function. */
6395 location_t id_loc;
6396 /* If this declarator is part of an init-declarator, the location of the
6397 initializer. */
6398 location_t init_loc;
6399 /* GNU Attributes that apply to this declarator. If the declarator
6400 is a pointer or a reference, these attribute apply to the type
6401 pointed to. */
6402 tree attributes;
6403 /* Standard C++11 attributes that apply to this declarator. If the
6404 declarator is a pointer or a reference, these attributes apply
6405 to the pointer, rather than to the type pointed to. */
6406 tree std_attributes;
6407 /* For all but cdk_id, cdk_decomp and cdk_error, the contained declarator.
6408 For cdk_id, cdk_decomp and cdk_error, guaranteed to be NULL. */
6409 cp_declarator *declarator;
6410 union {
6411 /* For identifiers. */
6412 struct {
6413 /* If non-NULL, the qualifying scope (a NAMESPACE_DECL or
6414 *_TYPE) for this identifier. */
6415 tree qualifying_scope;
6416 /* The unqualified name of the entity -- an IDENTIFIER_NODE,
6417 BIT_NOT_EXPR, or TEMPLATE_ID_EXPR. */
6418 tree unqualified_name;
6419 /* If this is the name of a function, what kind of special
6420 function (if any). */
6421 special_function_kind sfk;
6422 } id;
6423 /* For functions. */
6424 struct {
6425 /* The parameters to the function as a TREE_LIST of decl/default. */
6426 tree parameters;
6427 /* The cv-qualifiers for the function. */
6428 cp_cv_quals qualifiers;
6429 /* The virt-specifiers for the function. */
6430 cp_virt_specifiers virt_specifiers;
6431 /* The ref-qualifier for the function. */
6432 cp_ref_qualifier ref_qualifier;
6433 /* The transaction-safety qualifier for the function. */
6434 tree tx_qualifier;
6435 /* The exception-specification for the function. */
6436 tree exception_specification;
6437 /* The late-specified return type, if any. */
6438 tree late_return_type;
6439 /* The trailing requires-clause, if any. */
6440 tree requires_clause;
6441 location_t parens_loc;
6442 } function;
6443 /* For arrays. */
6444 struct {
6445 /* The bounds to the array. */
6446 tree bounds;
6447 } array;
6448 /* For cdk_pointer and cdk_ptrmem. */
6449 struct {
6450 /* The cv-qualifiers for the pointer. */
6451 cp_cv_quals qualifiers;
6452 /* For cdk_ptrmem, the class type containing the member. */
6453 tree class_type;
6454 } pointer;
6455 /* For cdk_reference */
6456 struct {
6457 /* The cv-qualifiers for the reference. These qualifiers are
6458 only used to diagnose ill-formed code. */
6459 cp_cv_quals qualifiers;
6460 /* Whether this is an rvalue reference */
6461 bool rvalue_ref;
6462 } reference;
6463 } u;
6466 /* A level of template instantiation. */
6467 struct GTY((chain_next ("%h.next"))) tinst_level {
6468 /* The immediately deeper level in the chain. */
6469 struct tinst_level *next;
6471 /* The original node. TLDCL can be a DECL (for a function or static
6472 data member), a TYPE (for a class), depending on what we were
6473 asked to instantiate, or a TREE_LIST with the template as PURPOSE
6474 and the template args as VALUE, if we are substituting for
6475 overload resolution. In all these cases, TARGS is NULL.
6476 However, to avoid creating TREE_LIST objects for substitutions if
6477 we can help, we store PURPOSE and VALUE in TLDCL and TARGS,
6478 respectively. So TLDCL stands for TREE_LIST or DECL (the
6479 template is a DECL too), whereas TARGS stands for the template
6480 arguments. */
6481 tree tldcl, targs;
6483 /* For modules we need to know (a) the modules on the path of
6484 instantiation and (b) the transitive imports along that path.
6485 Note that these two bitmaps may be inherited from NEXT, if this
6486 decl is in the same module as NEXT (or has no new information). */
6487 bitmap path;
6488 bitmap visible;
6490 private:
6491 /* Return TRUE iff the original node is a split list. */
6492 bool split_list_p () const { return targs; }
6494 /* Return TRUE iff the original node is a TREE_LIST object. */
6495 bool tree_list_p () const
6497 return !split_list_p () && TREE_CODE (tldcl) == TREE_LIST;
6500 /* Return TRUE iff the original node is not a list, split or not. */
6501 bool not_list_p () const
6503 return !split_list_p () && !tree_list_p ();
6506 /* Convert (in place) the original node from a split list to a
6507 TREE_LIST. */
6508 tree to_list ();
6510 public:
6511 /* Release storage for OBJ and node, if it's a TREE_LIST. */
6512 static void free (tinst_level *obj);
6514 /* Return TRUE iff the original node is a list, split or not. */
6515 bool list_p () const { return !not_list_p (); }
6517 /* Return the original node; if it's a split list, make it a
6518 TREE_LIST first, so that it can be returned as a single tree
6519 object. */
6520 tree get_node () {
6521 if (!split_list_p ()) return tldcl;
6522 else return to_list ();
6525 /* Return the original node if it's a DECL or a TREE_LIST, but do
6526 NOT convert a split list to a TREE_LIST: return NULL instead. */
6527 tree maybe_get_node () const {
6528 if (!split_list_p ()) return tldcl;
6529 else return NULL_TREE;
6532 /* The location where the template is instantiated. */
6533 location_t locus;
6535 /* errorcount + sorrycount when we pushed this level. */
6536 unsigned short errors;
6538 /* Count references to this object. If refcount reaches
6539 refcount_infinity value, we don't increment or decrement the
6540 refcount anymore, as the refcount isn't accurate anymore.
6541 The object can be still garbage collected if unreferenced from
6542 anywhere, which might keep referenced objects referenced longer than
6543 otherwise necessary. Hitting the infinity is rare though. */
6544 unsigned short refcount;
6546 /* Infinity value for the above refcount. */
6547 static const unsigned short refcount_infinity = (unsigned short) ~0;
6550 /* BUILT_IN_FRONTEND function codes. */
6551 enum cp_built_in_function {
6552 CP_BUILT_IN_IS_CONSTANT_EVALUATED,
6553 CP_BUILT_IN_INTEGER_PACK,
6554 CP_BUILT_IN_IS_CORRESPONDING_MEMBER,
6555 CP_BUILT_IN_IS_POINTER_INTERCONVERTIBLE_WITH_CLASS,
6556 CP_BUILT_IN_SOURCE_LOCATION,
6557 CP_BUILT_IN_LAST
6560 bool decl_spec_seq_has_spec_p (const cp_decl_specifier_seq *, cp_decl_spec);
6562 /* Return the type of the `this' parameter of FNTYPE. */
6564 inline tree
6565 type_of_this_parm (const_tree fntype)
6567 function_args_iterator iter;
6568 gcc_assert (TREE_CODE (fntype) == METHOD_TYPE);
6569 function_args_iter_init (&iter, fntype);
6570 return function_args_iter_cond (&iter);
6573 /* Return the class of the `this' parameter of FNTYPE. */
6575 inline tree
6576 class_of_this_parm (const_tree fntype)
6578 return TREE_TYPE (type_of_this_parm (fntype));
6581 /* A parameter list indicating for a function with no parameters,
6582 e.g "int f(void)". */
6583 extern cp_parameter_declarator *no_parameters;
6585 /* Various dump ids. */
6586 extern int class_dump_id;
6587 extern int module_dump_id;
6588 extern int raw_dump_id;
6590 /* Whether the current context is manifestly constant-evaluated.
6591 Used by the constexpr machinery to control folding of
6592 __builtin_is_constant_evaluated. */
6594 enum class mce_value
6596 /* Unknown, so treat __builtin_is_constant_evaluated as non-constant. */
6597 mce_unknown = 0,
6598 /* Fold it to true. */
6599 mce_true = 1,
6600 /* Fold it to false. Primarily used during cp_fold_function and
6601 cp_fully_fold_init. */
6602 mce_false = -1,
6604 constexpr mce_value mce_unknown = mce_value::mce_unknown;
6605 constexpr mce_value mce_true = mce_value::mce_true;
6606 constexpr mce_value mce_false = mce_value::mce_false;
6608 /* in call.cc */
6609 extern bool check_dtor_name (tree, tree);
6610 int magic_varargs_p (tree);
6612 extern tree build_conditional_expr (const op_location_t &,
6613 tree, tree, tree,
6614 tsubst_flags_t);
6615 extern tree build_addr_func (tree, tsubst_flags_t);
6616 extern void set_flags_from_callee (tree);
6617 extern tree build_call_a (tree, int, tree*);
6618 extern tree build_call_n (tree, int, ...);
6619 extern bool null_ptr_cst_p (tree);
6620 extern bool null_member_pointer_value_p (tree);
6621 extern bool sufficient_parms_p (const_tree);
6622 extern tree type_decays_to (tree);
6623 extern tree extract_call_expr (tree);
6624 extern tree build_trivial_dtor_call (tree, bool = false);
6625 extern tristate ref_conv_binds_to_temporary (tree, tree, bool = false);
6626 extern tree build_user_type_conversion (tree, tree, int,
6627 tsubst_flags_t);
6628 extern tree build_new_function_call (tree, vec<tree, va_gc> **,
6629 tsubst_flags_t);
6630 extern tree build_operator_new_call (tree, vec<tree, va_gc> **,
6631 tree *, tree *, tree, tree,
6632 tree *, tsubst_flags_t);
6633 extern tree build_new_method_call (tree, tree,
6634 vec<tree, va_gc> **, tree,
6635 int, tree *, tsubst_flags_t);
6636 extern tree build_special_member_call (tree, tree,
6637 vec<tree, va_gc> **,
6638 tree, int, tsubst_flags_t);
6639 extern tree build_new_op (const op_location_t &,
6640 enum tree_code,
6641 int, tree, tree, tree, tree,
6642 tree *, tsubst_flags_t);
6643 /* Wrapper that leaves out the usually-null op3 and overload parms. */
6644 inline tree build_new_op (const op_location_t &loc, enum tree_code code,
6645 int flags, tree arg1, tree arg2,
6646 tsubst_flags_t complain)
6648 return build_new_op (loc, code, flags, arg1, arg2, NULL_TREE, NULL_TREE,
6649 NULL, complain);
6651 extern tree keep_unused_object_arg (tree, tree, tree);
6652 extern tree build_op_call (tree, vec<tree, va_gc> **,
6653 tsubst_flags_t);
6654 extern tree build_op_subscript (const op_location_t &, tree,
6655 vec<tree, va_gc> **, tree *,
6656 tsubst_flags_t);
6657 extern bool aligned_allocation_fn_p (tree);
6658 extern tree destroying_delete_p (tree);
6659 extern bool usual_deallocation_fn_p (tree);
6660 extern tree build_op_delete_call (enum tree_code, tree, tree,
6661 bool, tree, tree,
6662 tsubst_flags_t);
6663 extern bool can_convert (tree, tree, tsubst_flags_t);
6664 extern bool can_convert_standard (tree, tree, tsubst_flags_t);
6665 extern bool can_convert_arg (tree, tree, tree, int,
6666 tsubst_flags_t);
6667 extern bool can_convert_arg_bad (tree, tree, tree, int,
6668 tsubst_flags_t);
6669 extern int conv_flags (int, int, tree, tree, int);
6670 extern struct conversion * good_conversion (tree, tree, tree, int, tsubst_flags_t);
6671 extern location_t get_fndecl_argument_location (tree, int);
6672 extern void complain_about_bad_argument (location_t arg_loc,
6673 tree from_type, tree to_type,
6674 tree fndecl, int parmnum);
6675 extern void maybe_inform_about_fndecl_for_bogus_argument_init (tree, int);
6676 extern tree perform_dguide_overload_resolution (tree, const vec<tree, va_gc> *,
6677 tsubst_flags_t);
6680 /* A class for recording information about access failures (e.g. private
6681 fields), so that we can potentially supply a fix-it hint about
6682 an accessor (from a context in which the constness of the object
6683 is known). */
6685 class access_failure_info
6687 public:
6688 access_failure_info () : m_was_inaccessible (false),
6689 m_basetype_path (NULL_TREE),
6690 m_decl (NULL_TREE), m_diag_decl (NULL_TREE) {}
6692 void record_access_failure (tree basetype_path, tree decl, tree diag_decl);
6694 bool was_inaccessible_p () const { return m_was_inaccessible; }
6695 tree get_decl () const { return m_decl; }
6696 tree get_diag_decl () const { return m_diag_decl; }
6697 tree get_any_accessor (bool const_p) const;
6698 void maybe_suggest_accessor (bool const_p) const;
6699 static void add_fixit_hint (rich_location *richloc, tree accessor);
6701 private:
6702 bool m_was_inaccessible;
6703 tree m_basetype_path;
6704 tree m_decl;
6705 tree m_diag_decl;
6708 extern void complain_about_access (tree, tree, tree, bool,
6709 access_kind);
6710 extern void push_defarg_context (tree);
6711 extern void pop_defarg_context (void);
6712 extern tree convert_default_arg (tree, tree, tree, int,
6713 tsubst_flags_t);
6714 extern tree convert_arg_to_ellipsis (tree, tsubst_flags_t);
6715 extern tree build_x_va_arg (location_t, tree, tree);
6716 extern tree cxx_type_promotes_to (tree);
6717 extern tree type_passed_as (tree);
6718 extern tree convert_for_arg_passing (tree, tree, tsubst_flags_t);
6719 extern bool is_properly_derived_from (tree, tree);
6720 extern tree initialize_reference (tree, tree, int,
6721 tsubst_flags_t);
6722 extern tree extend_ref_init_temps (tree, tree,
6723 vec<tree, va_gc>**,
6724 tree * = NULL);
6725 extern tree make_temporary_var_for_ref_to_temp (tree, tree);
6726 extern bool type_has_extended_temps (tree);
6727 extern tree strip_top_quals (tree);
6728 extern bool reference_related_p (tree, tree);
6729 extern bool reference_compatible_p (tree, tree);
6730 extern int remaining_arguments (tree);
6731 extern tree build_implicit_conv_flags (tree, tree, int);
6732 extern tree perform_implicit_conversion (tree, tree, tsubst_flags_t);
6733 extern tree perform_implicit_conversion_flags (tree, tree, tsubst_flags_t, int);
6734 extern tree build_converted_constant_expr (tree, tree, tsubst_flags_t);
6735 extern tree build_converted_constant_bool_expr (tree, tsubst_flags_t);
6736 extern tree perform_direct_initialization_if_possible (tree, tree, bool,
6737 tsubst_flags_t);
6738 extern vec<tree,va_gc> *resolve_args (vec<tree,va_gc>*, tsubst_flags_t);
6739 extern tree in_charge_arg_for_name (tree);
6740 extern bool in_immediate_context ();
6741 extern tree build_cxx_call (tree, int, tree *,
6742 tsubst_flags_t,
6743 tree = NULL_TREE);
6744 extern bool is_std_init_list (tree);
6745 extern bool is_list_ctor (tree);
6746 extern void validate_conversion_obstack (void);
6747 extern void mark_versions_used (tree);
6748 extern int unsafe_return_slot_p (tree);
6749 extern bool unsafe_copy_elision_p (tree, tree);
6750 extern bool make_safe_copy_elision (tree, tree);
6751 extern bool cp_handle_deprecated_or_unavailable (tree, tsubst_flags_t = tf_warning_or_error);
6752 extern void cp_warn_deprecated_use_scopes (tree);
6753 extern tree get_function_version_dispatcher (tree);
6754 extern bool any_template_arguments_need_structural_equality_p (tree);
6755 extern void maybe_show_nonconverting_candidate (tree, tree, tree, int);
6757 /* in class.cc */
6758 extern tree build_vfield_ref (tree, tree);
6759 extern tree build_if_in_charge (tree true_stmt, tree false_stmt = void_node);
6760 extern tree build_base_path (enum tree_code, tree,
6761 tree, int, tsubst_flags_t);
6762 extern tree convert_to_base (tree, tree, bool, bool,
6763 tsubst_flags_t);
6764 extern tree convert_to_base_statically (tree, tree);
6765 extern bool is_empty_base_ref (tree);
6766 extern tree build_vtbl_ref (tree, tree);
6767 extern tree build_vfn_ref (tree, tree);
6768 extern tree get_vtable_decl (tree, int);
6769 extern bool add_method (tree, tree, bool);
6770 extern tree declared_access (tree);
6771 extern bool maybe_push_used_methods (tree);
6772 extern tree currently_open_class (tree);
6773 extern tree currently_open_derived_class (tree);
6774 extern tree outermost_open_class (void);
6775 extern tree current_nonlambda_class_type (void);
6776 extern tree finish_struct (tree, tree);
6777 extern void finish_struct_1 (tree);
6778 extern int resolves_to_fixed_type_p (tree, int * = NULL);
6779 extern void init_class_processing (void);
6780 extern int is_empty_class (tree);
6781 extern bool is_really_empty_class (tree, bool);
6782 extern void pushclass (tree);
6783 extern void popclass (void);
6784 extern void push_nested_class (tree);
6785 extern void pop_nested_class (void);
6786 extern int current_lang_depth (void);
6787 extern void push_lang_context (tree);
6788 extern void pop_lang_context (void);
6789 extern tree instantiate_type (tree, tree, tsubst_flags_t);
6790 extern void build_self_reference (void);
6791 extern int same_signature_p (const_tree, const_tree);
6792 extern tree lookup_vfn_in_binfo (tree, tree);
6793 extern void maybe_add_class_template_decl_list (tree, tree, int);
6794 extern void unreverse_member_declarations (tree);
6795 extern bool is_empty_field (tree);
6796 extern void invalidate_class_lookup_cache (void);
6797 extern void maybe_note_name_used_in_class (tree, tree);
6798 extern void note_name_declared_in_class (tree, tree);
6799 extern tree get_vtbl_decl_for_binfo (tree);
6800 extern bool vptr_via_virtual_p (tree);
6801 extern void debug_class (tree);
6802 extern void debug_thunks (tree);
6803 extern void set_linkage_according_to_type (tree, tree);
6804 extern void determine_key_method (tree);
6805 extern void check_for_override (tree, tree);
6806 extern void push_class_stack (void);
6807 extern void pop_class_stack (void);
6808 extern bool default_ctor_p (const_tree);
6809 extern bool type_has_user_nondefault_constructor (tree);
6810 extern tree in_class_defaulted_default_constructor (tree);
6811 extern bool user_provided_p (tree);
6812 extern bool type_has_user_provided_constructor (tree);
6813 extern bool type_has_non_user_provided_default_constructor (tree);
6814 extern bool vbase_has_user_provided_move_assign (tree);
6815 extern tree default_init_uninitialized_part (tree);
6816 extern bool trivial_default_constructor_is_constexpr (tree);
6817 extern bool type_has_constexpr_default_constructor (tree);
6818 extern bool type_has_constexpr_destructor (tree);
6819 extern bool type_has_virtual_destructor (tree);
6820 extern bool classtype_has_move_assign_or_move_ctor_p (tree, bool user_declared);
6821 extern bool classtype_has_non_deleted_move_ctor (tree);
6822 extern tree classtype_has_depr_implicit_copy (tree);
6823 extern bool classtype_has_op (tree, tree_code);
6824 extern tree classtype_has_defaulted_op (tree, tree_code);
6825 extern bool type_build_ctor_call (tree);
6826 extern bool type_build_dtor_call (tree);
6827 extern void explain_non_literal_class (tree);
6828 extern void inherit_targ_abi_tags (tree);
6829 extern void defaulted_late_check (tree);
6830 extern bool defaultable_fn_check (tree);
6831 extern void check_abi_tags (tree);
6832 extern tree missing_abi_tags (tree);
6833 extern void fixup_type_variants (tree);
6834 extern void fixup_attribute_variants (tree);
6835 extern void build_cdtor_clones (tree, bool, bool, bool);
6836 extern void clone_cdtor (tree, bool);
6837 extern tree copy_operator_fn (tree, tree_code code);
6838 extern void adjust_clone_args (tree);
6839 extern void deduce_noexcept_on_destructor (tree);
6840 extern bool uniquely_derived_from_p (tree, tree);
6841 extern bool publicly_uniquely_derived_p (tree, tree);
6842 extern tree common_enclosing_class (tree, tree);
6844 /* in cvt.cc */
6845 extern tree convert_to_reference (tree, tree, int, int, tree,
6846 tsubst_flags_t);
6847 extern tree convert_from_reference (tree);
6848 extern tree force_rvalue (tree, tsubst_flags_t);
6849 extern tree ocp_convert (tree, tree, int, int,
6850 tsubst_flags_t);
6851 extern tree cp_convert (tree, tree, tsubst_flags_t);
6852 extern tree cp_convert_and_check (tree, tree, tsubst_flags_t);
6853 extern tree cp_fold_convert (tree, tree);
6854 extern tree cp_get_callee (tree);
6855 extern tree cp_get_callee_fndecl (tree);
6856 extern tree cp_get_callee_fndecl_nofold (tree);
6857 extern tree cp_get_fndecl_from_callee (tree, bool fold = true);
6858 extern tree convert_to_void (tree, impl_conv_void,
6859 tsubst_flags_t);
6860 extern tree convert_force (tree, tree, int,
6861 tsubst_flags_t);
6862 extern tree build_expr_type_conversion (int, tree, bool);
6863 extern tree type_promotes_to (tree);
6864 extern bool can_convert_qual (tree, tree);
6865 extern tree perform_qualification_conversions (tree, tree);
6866 extern bool tx_safe_fn_type_p (tree);
6867 extern tree tx_unsafe_fn_variant (tree);
6868 extern bool fnptr_conv_p (tree, tree);
6869 extern tree strip_fnptr_conv (tree);
6871 /* in name-lookup.cc */
6872 extern void maybe_push_cleanup_level (tree);
6873 extern tree maybe_push_decl (tree);
6874 extern tree current_decl_namespace (void);
6876 /* decl.cc */
6877 extern tree poplevel (int, int, int);
6878 extern void cxx_init_decl_processing (void);
6879 enum cp_tree_node_structure_enum cp_tree_node_structure
6880 (union lang_tree_node *);
6881 extern void finish_scope (void);
6882 extern void push_switch (tree);
6883 extern void pop_switch (void);
6884 extern void note_break_stmt (void);
6885 extern bool note_iteration_stmt_body_start (void);
6886 extern void note_iteration_stmt_body_end (bool);
6887 extern void determine_local_discriminator (tree, tree = NULL_TREE);
6888 extern bool member_like_constrained_friend_p (tree);
6889 extern bool fns_correspond (tree, tree);
6890 extern int decls_match (tree, tree, bool = true);
6891 extern bool maybe_version_functions (tree, tree, bool);
6892 extern bool merge_default_template_args (tree, tree, bool);
6893 extern tree duplicate_decls (tree, tree,
6894 bool hiding = false,
6895 bool was_hidden = false);
6896 extern tree declare_local_label (tree);
6897 extern tree define_label (location_t, tree);
6898 extern void check_goto (tree);
6899 extern bool check_omp_return (void);
6900 extern tree make_typename_type (tree, tree, enum tag_types, tsubst_flags_t);
6901 extern tree build_typename_type (tree, tree, tree, tag_types);
6902 extern tree make_unbound_class_template (tree, tree, tree, tsubst_flags_t);
6903 extern tree make_unbound_class_template_raw (tree, tree, tree);
6904 extern unsigned push_abi_namespace (tree node = abi_node);
6905 extern void pop_abi_namespace (unsigned flags,
6906 tree node = abi_node);
6907 extern tree build_library_fn_ptr (const char *, tree, int);
6908 extern tree build_cp_library_fn_ptr (const char *, tree, int);
6909 extern tree push_library_fn (tree, tree, tree, int);
6910 extern tree push_throw_library_fn (tree, tree);
6911 extern void warn_misplaced_attr_for_class_type (location_t location,
6912 tree class_type);
6913 extern tree check_tag_decl (cp_decl_specifier_seq *, bool);
6914 extern tree shadow_tag (cp_decl_specifier_seq *);
6915 extern tree groktypename (cp_decl_specifier_seq *, const cp_declarator *, bool);
6916 extern tree start_decl (const cp_declarator *, cp_decl_specifier_seq *, int, tree, tree, tree *);
6917 extern void start_decl_1 (tree, bool);
6918 extern bool check_array_initializer (tree, tree, tree);
6919 extern void omp_declare_variant_finalize (tree, tree);
6920 struct cp_decomp { tree decl; unsigned int count; };
6921 extern void cp_finish_decl (tree, tree, bool, tree, int, cp_decomp * = nullptr);
6922 extern tree lookup_decomp_type (tree);
6923 extern void cp_finish_decomp (tree, cp_decomp *);
6924 extern int cp_complete_array_type (tree *, tree, bool);
6925 extern int cp_complete_array_type_or_error (tree *, tree, bool, tsubst_flags_t);
6926 extern tree build_ptrmemfunc_type (tree);
6927 extern tree build_ptrmem_type (tree, tree);
6928 /* the grokdeclarator prototype is in decl.h */
6929 extern tree build_this_parm (tree, tree, cp_cv_quals);
6930 extern tree grokparms (tree, tree *);
6931 extern int copy_fn_p (const_tree);
6932 extern bool move_fn_p (const_tree);
6933 extern bool move_signature_fn_p (const_tree);
6934 extern tree get_scope_of_declarator (const cp_declarator *);
6935 extern void grok_special_member_properties (tree);
6936 extern bool grok_ctor_properties (const_tree, const_tree);
6937 extern bool grok_op_properties (tree, bool);
6938 extern tree xref_tag (tag_types, tree,
6939 TAG_how = TAG_how::CURRENT_ONLY,
6940 bool tpl_header_p = false);
6941 extern void xref_basetypes (tree, tree);
6942 extern tree start_enum (tree, tree, tree, tree, bool, bool *);
6943 extern void finish_enum_value_list (tree);
6944 extern void finish_enum (tree);
6945 extern tree build_enumerator (tree, tree, tree, tree, location_t);
6946 extern tree lookup_enumerator (tree, tree);
6947 extern bool start_preparsed_function (tree, tree, int);
6948 extern bool start_function (cp_decl_specifier_seq *,
6949 const cp_declarator *, tree);
6950 extern void maybe_return_this (void);
6951 extern tree begin_function_body (void);
6952 extern void finish_function_body (tree);
6953 extern tree outer_curly_brace_block (tree);
6954 extern tree finish_function (bool);
6955 extern tree grokmethod (cp_decl_specifier_seq *, const cp_declarator *, tree);
6956 extern void maybe_register_incomplete_var (tree);
6957 extern void maybe_commonize_var (tree);
6958 extern void complete_vars (tree);
6959 extern tree static_fn_type (tree);
6960 extern void revert_static_member_fn (tree);
6961 extern void fixup_anonymous_aggr (tree);
6962 extern tree compute_array_index_type (tree, tree, tsubst_flags_t);
6963 extern tree check_default_argument (tree, tree, tsubst_flags_t);
6964 extern int wrapup_namespace_globals ();
6965 extern tree create_implicit_typedef (tree, tree);
6966 extern int local_variable_p (const_tree);
6967 extern tree register_dtor_fn (tree);
6968 extern tmpl_spec_kind current_tmpl_spec_kind (int);
6969 extern tree cxx_builtin_function (tree decl);
6970 extern tree cxx_builtin_function_ext_scope (tree decl);
6971 extern tree cxx_simulate_builtin_function_decl (tree);
6972 extern tree check_elaborated_type_specifier (enum tag_types, tree, bool);
6973 extern void warn_extern_redeclared_static (tree, tree);
6974 extern tree cxx_comdat_group (tree);
6975 extern bool cp_missing_noreturn_ok_p (tree);
6976 extern bool is_direct_enum_init (tree, tree);
6977 extern void initialize_artificial_var (tree, vec<constructor_elt, va_gc> *);
6978 extern tree check_var_type (tree, tree, location_t);
6979 extern tree reshape_init (tree, tree, tsubst_flags_t);
6980 extern tree next_aggregate_field (tree);
6981 extern tree next_subobject_field (tree);
6982 extern tree first_field (const_tree);
6983 extern tree fndecl_declared_return_type (tree);
6984 extern bool undeduced_auto_decl (tree);
6985 extern bool require_deduced_type (tree, tsubst_flags_t = tf_warning_or_error);
6987 extern tree finish_case_label (location_t, tree, tree);
6988 extern tree cxx_maybe_build_cleanup (tree, tsubst_flags_t);
6989 extern bool check_array_designated_initializer (constructor_elt *,
6990 unsigned HOST_WIDE_INT);
6991 extern bool check_for_uninitialized_const_var (tree, bool, tsubst_flags_t);
6992 extern tree build_explicit_specifier (tree, tsubst_flags_t);
6993 extern void do_push_parm_decls (tree, tree, tree *);
6994 extern tree do_aggregate_paren_init (tree, tree);
6996 /* in decl2.cc */
6997 extern void record_mangling (tree, bool);
6998 extern void overwrite_mangling (tree, tree);
6999 extern void note_mangling_alias (tree, tree);
7000 extern void generate_mangling_aliases (void);
7001 extern tree build_memfn_type (tree, tree, cp_cv_quals, cp_ref_qualifier);
7002 extern tree build_pointer_ptrmemfn_type (tree);
7003 extern tree change_return_type (tree, tree);
7004 extern void maybe_retrofit_in_chrg (tree);
7005 extern void maybe_make_one_only (tree);
7006 extern bool vague_linkage_p (tree);
7007 extern void grokclassfn (tree, tree,
7008 enum overload_flags);
7009 extern tree grok_array_decl (location_t, tree, tree,
7010 vec<tree, va_gc> **, tsubst_flags_t);
7011 extern tree delete_sanity (location_t, tree, tree, bool,
7012 int, tsubst_flags_t);
7013 extern tree check_classfn (tree, tree, tree);
7014 extern void check_member_template (tree);
7015 extern tree grokfield (const cp_declarator *, cp_decl_specifier_seq *,
7016 tree, bool, tree, tree);
7017 extern tree grokbitfield (const cp_declarator *, cp_decl_specifier_seq *,
7018 tree, tree, tree);
7019 extern tree splice_template_attributes (tree *, tree);
7020 extern bool any_dependent_type_attributes_p (tree);
7021 extern tree cp_reconstruct_complex_type (tree, tree);
7022 extern bool attributes_naming_typedef_ok (tree);
7023 extern void cplus_decl_attributes (tree *, tree, int);
7024 extern void finish_anon_union (tree);
7025 extern void cxx_post_compilation_parsing_cleanups (void);
7026 extern tree coerce_new_type (tree, location_t);
7027 extern void coerce_delete_type (tree, location_t);
7028 extern void comdat_linkage (tree);
7029 extern void determine_visibility (tree);
7030 extern void constrain_class_visibility (tree);
7031 extern void reset_type_linkage (tree);
7032 extern void tentative_decl_linkage (tree);
7033 extern void import_export_decl (tree);
7034 extern tree build_cleanup (tree);
7035 extern tree build_offset_ref_call_from_tree (tree, vec<tree, va_gc> **,
7036 tsubst_flags_t);
7037 extern bool decl_defined_p (tree);
7038 extern bool decl_constant_var_p (tree);
7039 extern bool decl_maybe_constant_var_p (tree);
7040 extern void no_linkage_error (tree);
7041 extern void check_default_args (tree);
7042 extern bool mark_used (tree,
7043 tsubst_flags_t = tf_warning_or_error);
7044 extern bool mark_single_function (tree, tsubst_flags_t);
7045 extern void finish_static_data_member_decl (tree, tree, bool, tree, int);
7046 extern tree cp_build_parm_decl (tree, tree, tree);
7047 extern void copy_linkage (tree, tree);
7048 extern tree get_guard (tree);
7049 extern tree get_guard_cond (tree, bool);
7050 extern tree set_guard (tree);
7051 extern bool var_needs_tls_wrapper (tree);
7052 extern tree maybe_get_tls_wrapper_call (tree);
7053 extern void mark_needed (tree);
7054 extern bool decl_needed_p (tree);
7055 extern void note_vague_linkage_fn (tree);
7056 extern void note_variable_template_instantiation (tree);
7057 extern tree build_artificial_parm (tree, tree, tree);
7058 extern bool possibly_inlined_p (tree);
7059 extern int parm_index (tree);
7060 extern tree vtv_start_verification_constructor_init_function (void);
7061 extern tree vtv_finish_verification_constructor_init_function (tree);
7062 extern void cp_check_const_attributes (tree);
7063 extern void maybe_propagate_warmth_attributes (tree, tree);
7065 /* in error.cc */
7066 extern const char *type_as_string (tree, int);
7067 extern const char *type_as_string_translate (tree, int);
7068 extern const char *decl_as_string (tree, int);
7069 extern const char *decl_as_string_translate (tree, int);
7070 extern const char *decl_as_dwarf_string (tree, int);
7071 extern const char *expr_as_string (tree, int);
7072 extern const char *expr_to_string (tree);
7073 extern const char *lang_decl_name (tree, int, bool);
7074 extern const char *lang_decl_dwarf_name (tree, int, bool);
7075 extern const char *language_to_string (enum languages);
7076 extern const char *class_key_or_enum_as_string (tree);
7077 extern void maybe_warn_variadic_templates (void);
7078 extern void maybe_warn_cpp0x (cpp0x_warn_str str,
7079 location_t = input_location);
7080 extern bool pedwarn_cxx98 (location_t, int, const char *, ...) ATTRIBUTE_GCC_DIAG(3,4);
7081 extern location_t location_of (tree);
7082 extern void qualified_name_lookup_error (tree, tree, tree,
7083 location_t);
7085 /* in except.cc */
7086 extern void init_exception_processing (void);
7087 extern tree expand_start_catch_block (tree);
7088 extern void expand_end_catch_block (void);
7089 extern tree build_exc_ptr (void);
7090 extern tree build_throw (location_t, tree);
7091 extern int nothrow_libfn_p (const_tree);
7092 extern void check_handlers (tree);
7093 extern tree finish_noexcept_expr (tree, tsubst_flags_t);
7094 extern bool expr_noexcept_p (tree, tsubst_flags_t);
7095 extern void perform_deferred_noexcept_checks (void);
7096 extern bool nothrow_spec_p (const_tree);
7097 extern bool type_noexcept_p (const_tree);
7098 extern bool type_throw_all_p (const_tree);
7099 extern tree build_noexcept_spec (tree, tsubst_flags_t);
7100 extern void choose_personality_routine (enum languages);
7101 extern tree build_must_not_throw_expr (tree,tree);
7102 extern tree eh_type_info (tree);
7103 extern tree begin_eh_spec_block (void);
7104 extern void finish_eh_spec_block (tree, tree);
7105 extern tree build_eh_type_type (tree);
7106 extern tree cp_protect_cleanup_actions (void);
7107 extern void maybe_splice_retval_cleanup (tree, bool);
7108 extern tree maybe_set_retval_sentinel (void);
7110 extern tree template_parms_to_args (tree);
7111 extern tree template_parms_level_to_args (tree);
7112 extern tree generic_targs_for (tree);
7113 extern tree outer_template_args (const_tree);
7115 /* in expr.cc */
7116 extern tree cplus_expand_constant (tree);
7117 extern tree mark_use (tree expr, bool rvalue_p, bool read_p,
7118 location_t = UNKNOWN_LOCATION,
7119 bool reject_builtin = true);
7120 extern tree mark_rvalue_use (tree,
7121 location_t = UNKNOWN_LOCATION,
7122 bool reject_builtin = true);
7123 extern tree mark_lvalue_use (tree);
7124 extern tree mark_lvalue_use_nonread (tree);
7125 extern tree mark_type_use (tree);
7126 extern tree mark_discarded_use (tree);
7127 extern void mark_exp_read (tree);
7129 /* friend.cc */
7130 extern int is_friend (tree, tree);
7131 extern void make_friend_class (tree, tree, bool);
7132 extern void add_friend (tree, tree, bool);
7133 extern tree do_friend (tree, tree, tree,
7134 enum overload_flags, bool);
7136 extern void set_global_friend (tree);
7137 extern bool is_global_friend (tree);
7139 /* in init.cc */
7140 extern tree find_temps_r (tree *, int *, void *);
7141 extern tree expand_member_init (tree);
7142 extern void emit_mem_initializers (tree);
7143 extern tree build_aggr_init (tree, tree, int,
7144 tsubst_flags_t);
7145 extern int is_class_type (tree, int);
7146 extern bool is_copy_initialization (tree);
7147 extern tree build_zero_init (tree, tree, bool);
7148 extern tree build_value_init (tree, tsubst_flags_t);
7149 extern tree build_value_init_noctor (tree, tsubst_flags_t);
7150 extern tree maybe_instantiate_nsdmi_init (tree, tsubst_flags_t);
7151 extern tree get_nsdmi (tree, bool, tsubst_flags_t);
7152 extern tree build_offset_ref (tree, tree, bool,
7153 tsubst_flags_t);
7154 extern tree throw_bad_array_new_length (void);
7155 extern bool type_has_new_extended_alignment (tree);
7156 extern unsigned malloc_alignment (void);
7157 extern tree build_new_constexpr_heap_type (tree, tree, tree);
7158 extern tree build_new (location_t,
7159 vec<tree, va_gc> **, tree,
7160 tree, vec<tree, va_gc> **,
7161 int, tsubst_flags_t);
7162 extern tree get_temp_regvar (tree, tree);
7163 extern tree build_vec_init (tree, tree, tree, bool, int,
7164 tsubst_flags_t,
7165 vec<tree, va_gc> ** = nullptr);
7166 extern tree build_delete (location_t, tree, tree,
7167 special_function_kind,
7168 int, int, tsubst_flags_t);
7169 extern void push_base_cleanups (void);
7170 extern tree build_vec_delete (location_t, tree, tree,
7171 special_function_kind, int,
7172 tsubst_flags_t);
7173 extern tree create_temporary_var (tree);
7174 extern void initialize_vtbl_ptrs (tree);
7175 extern tree scalar_constant_value (tree);
7176 extern tree decl_constant_value (tree, bool);
7177 extern tree decl_really_constant_value (tree, bool = true);
7178 extern int diagnose_uninitialized_cst_or_ref_member (tree, bool, bool);
7179 extern tree build_vtbl_address (tree);
7180 extern bool maybe_reject_flexarray_init (tree, tree);
7182 /* in lex.cc */
7183 extern void cxx_dup_lang_specific_decl (tree);
7184 extern tree unqualified_name_lookup_error (tree,
7185 location_t = UNKNOWN_LOCATION);
7186 extern tree unqualified_fn_lookup_error (cp_expr);
7187 extern tree make_conv_op_name (tree);
7188 extern tree build_lang_decl (enum tree_code, tree, tree);
7189 extern tree build_lang_decl_loc (location_t, enum tree_code, tree, tree);
7190 extern bool maybe_add_lang_decl_raw (tree, bool decomp_p);
7191 extern bool maybe_add_lang_type_raw (tree);
7192 extern void retrofit_lang_decl (tree);
7193 extern void fit_decomposition_lang_decl (tree, tree);
7194 extern tree copy_decl (tree CXX_MEM_STAT_INFO);
7195 extern tree copy_type (tree CXX_MEM_STAT_INFO);
7196 extern tree cxx_make_type (enum tree_code CXX_MEM_STAT_INFO);
7197 extern tree make_class_type (enum tree_code CXX_MEM_STAT_INFO);
7198 extern const char *get_identifier_kind_name (tree);
7199 extern void set_identifier_kind (tree, cp_identifier_kind);
7200 extern bool cxx_init (void);
7201 extern void cxx_finish (void);
7202 extern bool in_main_input_context (void);
7203 extern uintptr_t module_token_pre (cpp_reader *, const cpp_token *, uintptr_t);
7204 extern uintptr_t module_token_cdtor (cpp_reader *, uintptr_t);
7205 extern uintptr_t module_token_lang (int type, int keyword, tree value,
7206 location_t, uintptr_t);
7208 /* in method.cc */
7209 extern void init_method (void);
7210 extern tree make_thunk (tree, bool, tree, tree);
7211 extern void finish_thunk (tree);
7212 extern void use_thunk (tree, bool);
7213 extern bool trivial_fn_p (tree);
7214 extern tree forward_parm (tree);
7215 extern bool is_trivially_xible (enum tree_code, tree, tree);
7216 extern bool is_nothrow_xible (enum tree_code, tree, tree);
7217 extern bool is_xible (enum tree_code, tree, tree);
7218 extern bool is_convertible (tree, tree);
7219 extern bool is_nothrow_convertible (tree, tree);
7220 extern bool ref_xes_from_temporary (tree, tree, bool);
7221 extern tree get_defaulted_eh_spec (tree, tsubst_flags_t = tf_warning_or_error);
7222 extern bool maybe_explain_implicit_delete (tree);
7223 extern void explain_implicit_non_constexpr (tree);
7224 extern bool deduce_inheriting_ctor (tree);
7225 extern bool decl_remember_implicit_trigger_p (tree);
7226 extern void synthesize_method (tree);
7227 extern void maybe_synthesize_method (tree);
7228 extern tree lazily_declare_fn (special_function_kind,
7229 tree);
7230 extern tree skip_artificial_parms_for (const_tree, tree);
7231 extern int num_artificial_parms_for (const_tree);
7232 extern tree make_alias_for (tree, tree);
7233 extern tree get_copy_ctor (tree, tsubst_flags_t);
7234 extern tree get_copy_assign (tree);
7235 extern tree get_default_ctor (tree);
7236 extern tree get_dtor (tree, tsubst_flags_t);
7237 extern tree build_stub_object (tree);
7238 extern tree strip_inheriting_ctors (tree);
7239 extern tree inherited_ctor_binfo (tree);
7240 extern bool base_ctor_omit_inherited_parms (tree);
7241 extern bool ctor_omit_inherited_parms (tree);
7242 extern tree locate_ctor (tree);
7243 extern tree implicitly_declare_fn (special_function_kind, tree,
7244 bool, tree, tree);
7245 /* In module.cc */
7246 class module_state; /* Forward declare. */
7247 inline bool modules_p () { return flag_modules != 0; }
7249 /* The kind of module or part thereof that we're in. */
7250 enum module_kind_bits
7252 MK_NAMED = 1 << 0, // TU is a named module
7253 MK_HEADER = 1 << 1, // TU is a header unit
7254 MK_INTERFACE = 1 << 2, // TU is an interface
7255 MK_PARTITION = 1 << 3, // TU is a partition
7257 MK_PURVIEW = 1 << 4, // In purview of current module
7258 MK_ATTACH = 1 << 5, // Attaching to named module
7260 MK_EXPORTING = 1 << 6, /* We are in an export region. */
7263 /* We do lots of bit-manipulation, so an unsigned is easier. */
7264 extern unsigned module_kind;
7266 inline bool module_p ()
7267 { return module_kind & (MK_NAMED | MK_HEADER); }
7268 inline bool named_module_p ()
7269 { return module_kind & MK_NAMED; }
7270 inline bool header_module_p ()
7271 { return module_kind & MK_HEADER; }
7272 inline bool module_interface_p ()
7273 { return module_kind & MK_INTERFACE; }
7274 inline bool module_partition_p ()
7275 { return module_kind & MK_PARTITION; }
7276 inline bool module_has_cmi_p ()
7277 { return module_kind & (MK_INTERFACE | MK_PARTITION); }
7279 inline bool module_purview_p ()
7280 { return module_kind & MK_PURVIEW; }
7281 inline bool module_attach_p ()
7282 { return module_kind & MK_ATTACH; }
7284 inline bool named_module_purview_p ()
7285 { return named_module_p () && module_purview_p (); }
7287 /* We're currently exporting declarations. */
7288 inline bool module_exporting_p ()
7289 { return module_kind & MK_EXPORTING; }
7291 extern module_state *get_module (tree name, module_state *parent = NULL,
7292 bool partition = false);
7293 extern bool module_may_redeclare (tree decl);
7295 extern bool module_global_init_needed ();
7296 extern bool module_determine_import_inits ();
7297 extern void module_add_import_initializers ();
7299 /* Where the namespace-scope decl was originally declared. */
7300 extern void set_originating_module (tree, bool friend_p = false);
7301 extern tree get_originating_module_decl (tree) ATTRIBUTE_PURE;
7302 extern int get_originating_module (tree, bool for_mangle = false) ATTRIBUTE_PURE;
7303 extern unsigned get_importing_module (tree, bool = false) ATTRIBUTE_PURE;
7305 /* Where current instance of the decl got declared/defined/instantiated. */
7306 extern void set_instantiating_module (tree);
7307 extern void set_defining_module (tree);
7308 extern void maybe_key_decl (tree ctx, tree decl);
7310 extern void mangle_module (int m, bool include_partition);
7311 extern void mangle_module_fini ();
7312 extern void lazy_load_binding (unsigned mod, tree ns, tree id,
7313 binding_slot *bslot);
7314 extern void lazy_load_pendings (tree decl);
7315 extern module_state *preprocess_module (module_state *, location_t,
7316 bool in_purview,
7317 bool is_import, bool export_p,
7318 cpp_reader *reader);
7319 extern void preprocessed_module (cpp_reader *reader);
7320 extern void import_module (module_state *, location_t, bool export_p,
7321 tree attr, cpp_reader *);
7322 extern void declare_module (module_state *, location_t, bool export_p,
7323 tree attr, cpp_reader *);
7324 extern void init_modules (cpp_reader *);
7325 extern void fini_modules (cpp_reader *, void *cookie, bool);
7326 extern void maybe_check_all_macros (cpp_reader *);
7327 extern void *finish_module_processing (cpp_reader *);
7328 extern char const *module_name (unsigned, bool header_ok);
7329 extern bitmap get_import_bitmap ();
7330 extern bitmap visible_instantiation_path (bitmap *);
7331 extern void module_begin_main_file (cpp_reader *, line_maps *,
7332 const line_map_ordinary *);
7333 extern void module_preprocess_options (cpp_reader *);
7334 extern bool handle_module_option (unsigned opt, const char *arg, int value);
7336 /* In optimize.cc */
7337 extern tree clone_attrs (tree);
7338 extern bool maybe_clone_body (tree);
7340 /* In parser.cc */
7341 extern tree cp_convert_range_for (tree, tree, tree, cp_decomp *, bool,
7342 unsigned short, bool);
7343 extern void cp_convert_omp_range_for (tree &, tree &, tree &,
7344 tree &, tree &, tree &, tree &, tree &);
7345 extern void cp_finish_omp_range_for (tree, tree);
7346 extern bool cp_maybe_parse_omp_decl (tree, tree);
7347 extern bool parsing_nsdmi (void);
7348 extern bool parsing_function_declarator ();
7349 extern bool parsing_default_capturing_generic_lambda_in_template (void);
7350 extern void inject_this_parameter (tree, cp_cv_quals);
7351 extern location_t defparse_location (tree);
7352 extern void maybe_show_extern_c_location (void);
7353 extern bool literal_integer_zerop (const_tree);
7354 extern tree attr_chainon (tree, tree);
7356 /* in pt.cc */
7357 extern tree canonical_type_parameter (tree);
7358 extern void push_access_scope (tree);
7359 extern void pop_access_scope (tree);
7360 extern bool check_template_shadow (tree);
7361 extern bool check_auto_in_tmpl_args (tree, tree);
7362 extern tree get_innermost_template_args (tree, int);
7363 extern void maybe_begin_member_template_processing (tree);
7364 extern void maybe_end_member_template_processing (void);
7365 extern tree finish_member_template_decl (tree);
7366 extern void begin_template_parm_list (void);
7367 extern bool begin_specialization (void);
7368 extern void reset_specialization (void);
7369 extern void end_specialization (void);
7370 extern void begin_explicit_instantiation (void);
7371 extern void end_explicit_instantiation (void);
7372 extern void check_unqualified_spec_or_inst (tree, location_t);
7373 extern tree check_explicit_specialization (tree, tree, int, int,
7374 tree = NULL_TREE);
7375 extern int num_template_headers_for_class (tree);
7376 extern void check_template_variable (tree);
7377 extern tree make_auto (void);
7378 extern tree make_decltype_auto (void);
7379 extern tree make_constrained_auto (tree, tree);
7380 extern tree make_constrained_decltype_auto (tree, tree);
7381 extern tree make_template_placeholder (tree);
7382 extern bool template_placeholder_p (tree);
7383 extern bool ctad_template_p (tree);
7384 extern bool unparenthesized_id_or_class_member_access_p (tree);
7385 extern tree do_auto_deduction (tree, tree, tree,
7386 tsubst_flags_t
7387 = tf_warning_or_error,
7388 auto_deduction_context
7389 = adc_unspecified,
7390 tree = NULL_TREE,
7391 int = LOOKUP_NORMAL,
7392 tree = NULL_TREE);
7393 extern tree type_uses_auto (tree);
7394 extern tree type_uses_auto_or_concept (tree);
7395 extern void append_type_to_template_for_access_check (tree, tree, tree,
7396 location_t);
7397 extern tree convert_generic_types_to_packs (tree, int, int);
7398 extern tree splice_late_return_type (tree, tree);
7399 extern bool is_auto (const_tree);
7400 extern tree process_template_parm (tree, location_t, tree,
7401 bool, bool);
7402 extern tree end_template_parm_list (tree);
7403 extern void end_template_parm_list (void);
7404 extern void end_template_decl (void);
7405 extern tree maybe_update_decl_type (tree, tree);
7406 extern bool check_default_tmpl_args (tree, tree, bool, bool, int);
7407 extern tree push_template_decl (tree, bool is_friend = false);
7408 extern tree add_inherited_template_parms (tree, tree);
7409 extern void template_parm_level_and_index (tree, int*, int*);
7410 extern bool redeclare_class_template (tree, tree, tree);
7411 extern tree lookup_template_class (tree, tree, tree, tree,
7412 int, tsubst_flags_t);
7413 extern tree lookup_template_function (tree, tree);
7414 extern tree lookup_template_variable (tree, tree, tsubst_flags_t);
7415 extern bool uses_template_parms (tree);
7416 extern bool uses_template_parms_level (tree, int);
7417 extern bool uses_outer_template_parms_in_constraints (tree, tree = NULL_TREE);
7418 extern bool need_generic_capture (void);
7419 extern tree instantiate_class_template (tree);
7420 extern tree instantiate_template (tree, tree, tsubst_flags_t);
7421 extern tree fn_type_unification (tree, tree, tree,
7422 const tree *, unsigned int,
7423 tree, unification_kind_t, int,
7424 struct conversion **,
7425 bool, bool);
7426 extern void mark_decl_instantiated (tree, int);
7427 extern int more_specialized_fn (tree, tree, int);
7428 extern bool type_targs_deducible_from (tree, tree);
7429 extern void do_decl_instantiation (tree, tree);
7430 extern void do_type_instantiation (tree, tree, tsubst_flags_t);
7431 extern bool always_instantiate_p (tree);
7432 extern bool maybe_instantiate_noexcept (tree, tsubst_flags_t = tf_warning_or_error);
7433 extern tree instantiate_decl (tree, bool, bool);
7434 extern void maybe_instantiate_decl (tree);
7435 extern int comp_template_parms (const_tree, const_tree);
7436 extern bool template_heads_equivalent_p (const_tree, const_tree);
7437 extern bool builtin_pack_fn_p (tree);
7438 extern tree uses_parameter_packs (tree);
7439 extern bool template_parameter_pack_p (const_tree);
7440 extern bool function_parameter_pack_p (const_tree);
7441 extern bool function_parameter_expanded_from_pack_p (tree, tree);
7442 extern tree make_pack_expansion (tree, tsubst_flags_t = tf_warning_or_error);
7443 extern bool check_for_bare_parameter_packs (tree, location_t = UNKNOWN_LOCATION);
7444 extern tree build_template_info (tree, tree);
7445 extern tree get_template_info (const_tree);
7446 extern int template_class_depth (tree);
7447 extern int is_specialization_of (tree, tree);
7448 extern bool is_specialization_of_friend (tree, tree);
7449 extern bool comp_template_args (tree, tree, tree * = NULL,
7450 tree * = NULL, bool = false);
7451 extern int template_args_equal (tree, tree, bool = false);
7452 extern tree maybe_process_partial_specialization (tree);
7453 extern tree most_specialized_instantiation (tree);
7454 extern tree most_specialized_partial_spec (tree, tsubst_flags_t, bool = false);
7455 extern void print_candidates (tree);
7456 extern void instantiate_pending_templates (int);
7457 extern tree tsubst_default_argument (tree, int, tree, tree,
7458 tsubst_flags_t);
7459 extern tree tsubst (tree, tree, tsubst_flags_t, tree);
7460 extern tree tsubst_copy_and_build (tree, tree, tsubst_flags_t, tree);
7461 extern tree tsubst_expr (tree, tree, tsubst_flags_t, tree);
7462 extern tree tsubst_pack_expansion (tree, tree, tsubst_flags_t, tree);
7463 extern tree tsubst_argument_pack (tree, tree, tsubst_flags_t, tree);
7464 extern tree tsubst_template_args (tree, tree, tsubst_flags_t, tree);
7465 extern tree tsubst_template_arg (tree, tree, tsubst_flags_t, tree);
7466 extern tree tsubst_function_parms (tree, tree, tsubst_flags_t, tree);
7467 extern tree most_general_template (tree);
7468 extern tree get_mostly_instantiated_function_type (tree);
7469 extern bool problematic_instantiation_changed (void);
7470 extern void record_last_problematic_instantiation (void);
7471 extern struct tinst_level *current_instantiation(void);
7472 extern bool instantiating_current_function_p (void);
7473 extern tree maybe_get_template_decl_from_type_decl (tree);
7474 extern int processing_template_parmlist;
7475 extern bool dependent_type_p (tree);
7476 extern bool dependent_scope_p (tree);
7477 extern bool dependentish_scope_p (tree);
7478 extern bool any_dependent_template_arguments_p (const_tree);
7479 extern bool any_erroneous_template_args_p (const_tree);
7480 extern bool dependent_template_p (tree);
7481 extern bool dependent_template_id_p (tree, tree);
7482 extern bool type_dependent_expression_p (tree);
7483 extern bool type_dependent_object_expression_p (tree);
7484 extern bool any_type_dependent_arguments_p (const vec<tree, va_gc> *);
7485 extern bool any_type_dependent_elements_p (const_tree);
7486 extern bool type_dependent_expression_p_push (tree);
7487 extern bool value_dependent_expression_p (tree);
7488 extern bool instantiation_dependent_uneval_expression_p (tree);
7489 extern bool any_value_dependent_elements_p (const_tree);
7490 extern bool dependent_omp_for_p (tree, tree, tree, tree);
7491 extern tree resolve_typename_type (tree, bool);
7492 extern tree template_for_substitution (tree);
7493 extern tree build_non_dependent_expr (tree);
7494 extern void make_args_non_dependent (vec<tree, va_gc> *);
7495 extern bool reregister_specialization (tree, tree, tree);
7496 extern tree instantiate_non_dependent_expr (tree, tsubst_flags_t = tf_error);
7497 extern tree instantiate_non_dependent_expr_internal (tree, tsubst_flags_t);
7498 extern tree instantiate_non_dependent_or_null (tree);
7499 extern bool variable_template_specialization_p (tree);
7500 extern bool alias_type_or_template_p (tree);
7501 enum { nt_opaque = false, nt_transparent = true };
7502 extern tree alias_template_specialization_p (const_tree, bool);
7503 extern tree dependent_alias_template_spec_p (const_tree, bool);
7504 extern tree get_template_parm_object (tree expr, tree mangle);
7505 extern tree tparm_object_argument (tree);
7506 extern bool explicit_class_specialization_p (tree);
7507 extern bool push_tinst_level (tree);
7508 extern bool push_tinst_level (tree, tree);
7509 extern bool push_tinst_level_loc (tree, location_t);
7510 extern bool push_tinst_level_loc (tree, tree, location_t);
7511 extern void pop_tinst_level (void);
7512 extern struct tinst_level *outermost_tinst_level(void);
7513 extern bool non_templated_friend_p (tree);
7514 extern void init_template_processing (void);
7515 extern void print_template_statistics (void);
7516 bool template_template_parameter_p (const_tree);
7517 bool template_type_parameter_p (const_tree);
7518 extern bool primary_template_specialization_p (const_tree);
7519 extern tree get_primary_template_innermost_parameters (const_tree);
7520 extern tree get_template_innermost_arguments (const_tree);
7521 extern tree get_template_argument_pack_elems (const_tree);
7522 extern tree get_function_template_decl (const_tree);
7523 extern tree resolve_nondeduced_context (tree, tsubst_flags_t);
7524 extern tree resolve_nondeduced_context_or_error (tree, tsubst_flags_t);
7525 extern hashval_t iterative_hash_template_arg (tree arg, hashval_t val);
7526 extern tree coerce_template_parms (tree, tree, tree, tsubst_flags_t,
7527 bool = true);
7528 extern tree canonicalize_type_argument (tree, tsubst_flags_t);
7529 extern void register_local_identity (tree);
7530 extern void register_local_specialization (tree, tree);
7531 extern tree retrieve_local_specialization (tree);
7532 extern void register_parameter_specializations (tree, tree);
7533 extern tree extract_fnparm_pack (tree, tree *);
7534 extern tree template_parm_to_arg (tree);
7535 extern tree dguide_name (tree);
7536 extern bool dguide_name_p (tree);
7537 extern bool deduction_guide_p (const_tree);
7538 extern bool copy_guide_p (const_tree);
7539 extern bool template_guide_p (const_tree);
7540 extern bool builtin_guide_p (const_tree);
7541 extern void store_explicit_specifier (tree, tree);
7542 extern tree lookup_explicit_specifier (tree);
7543 extern void walk_specializations (bool,
7544 void (*)(bool, spec_entry *,
7545 void *),
7546 void *);
7547 extern tree match_mergeable_specialization (bool is_decl, spec_entry *);
7548 extern unsigned get_mergeable_specialization_flags (tree tmpl, tree spec);
7549 extern void add_mergeable_specialization (bool is_decl, bool is_alias,
7550 spec_entry *,
7551 tree outer, unsigned);
7552 extern tree add_to_template_args (tree, tree);
7553 extern tree add_outermost_template_args (tree, tree);
7554 extern tree add_extra_args (tree, tree, tsubst_flags_t, tree);
7555 extern tree build_extra_args (tree, tree, tsubst_flags_t);
7557 /* in rtti.cc */
7558 /* A vector of all tinfo decls that haven't been emitted yet. */
7559 extern GTY(()) vec<tree, va_gc> *unemitted_tinfo_decls;
7561 extern void init_rtti_processing (void);
7562 extern tree build_typeid (tree, tsubst_flags_t);
7563 extern tree get_tinfo_decl_direct (tree, tree, int);
7564 extern tree get_tinfo_decl (tree);
7565 extern tree get_typeid (tree, tsubst_flags_t);
7566 extern tree build_headof (tree);
7567 extern tree build_dynamic_cast (location_t, tree, tree,
7568 tsubst_flags_t);
7569 extern void emit_support_tinfos (void);
7570 extern bool emit_tinfo_decl (tree);
7571 extern unsigned get_pseudo_tinfo_index (tree);
7572 extern tree get_pseudo_tinfo_type (unsigned);
7573 extern tree build_if_nonnull (tree, tree, tsubst_flags_t);
7575 /* in search.cc */
7576 extern tree get_parent_with_private_access (tree decl, tree binfo);
7577 extern bool accessible_base_p (tree, tree, bool);
7578 extern tree lookup_base (tree, tree, base_access,
7579 base_kind *, tsubst_flags_t,
7580 HOST_WIDE_INT = -1);
7581 extern tree dcast_base_hint (tree, tree);
7582 extern int accessible_p (tree, tree, bool);
7583 extern int accessible_in_template_p (tree, tree);
7584 extern tree lookup_field (tree, tree, int, bool);
7585 extern tree lookup_fnfields (tree, tree, int, tsubst_flags_t);
7586 extern tree lookup_member (tree, tree, int, bool,
7587 tsubst_flags_t,
7588 access_failure_info *afi = NULL);
7589 extern tree lookup_member_fuzzy (tree, tree, bool);
7590 extern tree locate_field_accessor (tree, tree, bool);
7591 extern int look_for_overrides (tree, tree);
7592 extern void get_pure_virtuals (tree);
7593 extern void maybe_suppress_debug_info (tree);
7594 extern void note_debug_info_needed (tree);
7595 extern tree current_scope (void);
7596 extern int at_function_scope_p (void);
7597 extern bool at_class_scope_p (void);
7598 extern bool at_namespace_scope_p (void);
7599 extern tree context_for_name_lookup (tree);
7600 extern tree type_context_for_name_lookup (tree);
7601 extern tree lookup_conversions (tree);
7602 extern tree binfo_from_vbase (tree);
7603 extern tree binfo_for_vbase (tree, tree);
7604 extern tree look_for_overrides_here (tree, tree);
7605 #define dfs_skip_bases ((tree)1)
7606 extern tree dfs_walk_all (tree, tree (*) (tree, void *),
7607 tree (*) (tree, void *), void *);
7608 extern tree dfs_walk_once (tree, tree (*) (tree, void *),
7609 tree (*) (tree, void *), void *);
7610 extern tree binfo_via_virtual (tree, tree);
7611 extern bool binfo_direct_p (tree);
7612 extern tree build_baselink (tree, tree, tree, tree);
7613 extern tree adjust_result_of_qualified_name_lookup
7614 (tree, tree, tree);
7615 extern tree copied_binfo (tree, tree);
7616 extern tree original_binfo (tree, tree);
7617 extern bool shared_member_p (tree);
7618 extern bool any_dependent_bases_p (tree = current_nonlambda_class_type ());
7619 extern bool maybe_check_overriding_exception_spec (tree, tree);
7621 /* in semantics.cc */
7622 extern void push_deferring_access_checks (deferring_kind);
7623 extern void resume_deferring_access_checks (void);
7624 extern void stop_deferring_access_checks (void);
7625 extern void pop_deferring_access_checks (void);
7626 extern vec<deferred_access_check, va_gc> *get_deferred_access_checks (void);
7627 extern void reopen_deferring_access_checks (vec<deferred_access_check, va_gc> *);
7628 extern void pop_to_parent_deferring_access_checks (void);
7629 extern bool perform_access_checks (vec<deferred_access_check, va_gc> *,
7630 tsubst_flags_t);
7631 extern bool perform_deferred_access_checks (tsubst_flags_t);
7632 extern bool perform_or_defer_access_check (tree, tree, tree,
7633 tsubst_flags_t,
7634 access_failure_info *afi = NULL);
7636 /* RAII sentinel to ensures that deferred access checks are popped before
7637 a function returns. */
7639 class deferring_access_check_sentinel
7641 public:
7642 deferring_access_check_sentinel (enum deferring_kind kind = dk_deferred)
7644 push_deferring_access_checks (kind);
7646 ~deferring_access_check_sentinel ()
7648 pop_deferring_access_checks ();
7652 extern int stmts_are_full_exprs_p (void);
7653 extern void init_cp_semantics (void);
7654 extern tree do_poplevel (tree);
7655 extern void break_maybe_infinite_loop (void);
7656 extern void add_decl_expr (tree);
7657 extern tree maybe_cleanup_point_expr_void (tree);
7658 extern tree finish_expr_stmt (tree);
7659 extern tree begin_if_stmt (void);
7660 extern tree finish_if_stmt_cond (tree, tree);
7661 extern tree finish_then_clause (tree);
7662 extern void begin_else_clause (tree);
7663 extern void finish_else_clause (tree);
7664 extern void finish_if_stmt (tree);
7665 extern tree begin_while_stmt (void);
7666 extern void finish_while_stmt_cond (tree, tree, bool, unsigned short,
7667 bool);
7668 extern void finish_while_stmt (tree);
7669 extern tree begin_do_stmt (void);
7670 extern void finish_do_body (tree);
7671 extern void finish_do_stmt (tree, tree, bool, unsigned short,
7672 bool);
7673 extern tree finish_return_stmt (tree);
7674 extern tree begin_for_scope (tree *);
7675 extern tree begin_for_stmt (tree, tree);
7676 extern void finish_init_stmt (tree);
7677 extern void finish_for_cond (tree, tree, bool, unsigned short,
7678 bool);
7679 extern void finish_for_expr (tree, tree);
7680 extern void finish_for_stmt (tree);
7681 extern tree begin_range_for_stmt (tree, tree);
7682 extern void finish_range_for_decl (tree, tree, tree);
7683 extern void finish_range_for_stmt (tree);
7684 extern tree finish_break_stmt (void);
7685 extern tree finish_continue_stmt (void);
7686 extern tree begin_switch_stmt (void);
7687 extern void finish_switch_cond (tree, tree);
7688 extern void finish_switch_stmt (tree);
7689 extern tree finish_goto_stmt (tree);
7690 extern tree begin_try_block (void);
7691 extern void finish_try_block (tree);
7692 extern void finish_handler_sequence (tree);
7693 extern tree begin_function_try_block (tree *);
7694 extern void finish_function_try_block (tree);
7695 extern void finish_function_handler_sequence (tree, tree);
7696 extern void finish_cleanup_try_block (tree);
7697 extern tree begin_handler (void);
7698 extern void finish_handler_parms (tree, tree);
7699 extern void finish_handler (tree);
7700 extern void finish_cleanup (tree, tree);
7701 extern bool is_this_parameter (tree);
7703 enum {
7704 BCS_NORMAL = 0,
7705 BCS_NO_SCOPE = 1,
7706 BCS_TRY_BLOCK = 2,
7707 BCS_FN_BODY = 4,
7708 BCS_TRANSACTION = 8,
7709 BCS_STMT_EXPR = 16
7711 extern tree begin_compound_stmt (unsigned int);
7713 extern void finish_compound_stmt (tree);
7714 extern tree finish_asm_stmt (location_t, int, tree, tree,
7715 tree, tree, tree, bool);
7716 extern tree finish_label_stmt (tree);
7717 extern void finish_label_decl (tree);
7718 extern cp_expr finish_parenthesized_expr (cp_expr);
7719 extern tree force_paren_expr (tree, bool = false);
7720 inline tree force_paren_expr_uneval (tree t)
7721 { return force_paren_expr (t, true); }
7722 extern tree maybe_undo_parenthesized_ref (tree);
7723 extern tree finish_non_static_data_member (tree, tree, tree,
7724 tsubst_flags_t = tf_warning_or_error);
7725 extern tree begin_stmt_expr (void);
7726 extern tree finish_stmt_expr_expr (tree, tree);
7727 extern tree finish_stmt_expr (tree, bool);
7728 extern tree stmt_expr_value_expr (tree);
7729 bool empty_expr_stmt_p (tree);
7730 extern cp_expr perform_koenig_lookup (cp_expr, vec<tree, va_gc> *,
7731 tsubst_flags_t);
7732 extern tree finish_call_expr (tree, vec<tree, va_gc> **, bool,
7733 bool, tsubst_flags_t);
7734 extern tree lookup_and_finish_template_variable (tree, tree, tsubst_flags_t = tf_warning_or_error);
7735 extern tree finish_template_variable (tree, tsubst_flags_t = tf_warning_or_error);
7736 extern cp_expr finish_increment_expr (cp_expr, enum tree_code);
7737 extern tree finish_this_expr (void);
7738 extern tree finish_pseudo_destructor_expr (tree, tree, tree, location_t);
7739 extern cp_expr finish_unary_op_expr (location_t, enum tree_code, cp_expr,
7740 tsubst_flags_t);
7741 /* Whether this call to finish_compound_literal represents a C++11 functional
7742 cast or a C99 compound literal. */
7743 enum fcl_t { fcl_functional, fcl_c99 };
7744 extern tree finish_compound_literal (tree, tree, tsubst_flags_t, fcl_t = fcl_functional);
7745 extern tree finish_fname (tree);
7746 extern void finish_translation_unit (void);
7747 extern tree finish_template_type_parm (tree, tree);
7748 extern tree finish_template_template_parm (tree, tree);
7749 extern tree begin_class_definition (tree);
7750 extern void finish_template_decl (tree);
7751 extern tree finish_template_type (tree, tree, int);
7752 extern tree finish_base_specifier (tree, tree, bool);
7753 extern void finish_member_declaration (tree);
7754 extern bool outer_automatic_var_p (tree);
7755 extern tree process_outer_var_ref (tree, tsubst_flags_t, bool force_use = false);
7756 extern cp_expr finish_id_expression (tree, tree, tree,
7757 cp_id_kind *,
7758 bool, bool, bool *,
7759 bool, bool, bool, bool,
7760 const char **,
7761 location_t);
7762 extern tree finish_typeof (tree);
7763 extern tree finish_underlying_type (tree);
7764 extern tree calculate_bases (tree, tsubst_flags_t);
7765 extern tree finish_bases (tree, bool);
7766 extern tree calculate_direct_bases (tree, tsubst_flags_t);
7767 extern tree finish_offsetof (tree, tree, location_t);
7768 extern void finish_decl_cleanup (tree, tree);
7769 extern void finish_eh_cleanup (tree);
7770 extern void emit_associated_thunks (tree);
7771 extern void finish_mem_initializers (tree);
7772 extern tree check_template_template_default_arg (tree);
7773 extern bool expand_or_defer_fn_1 (tree);
7774 extern void expand_or_defer_fn (tree);
7775 extern bool check_accessibility_of_qualified_id (tree, tree, tree, tsubst_flags_t);
7776 extern tree finish_qualified_id_expr (tree, tree, bool, bool,
7777 bool, bool, tsubst_flags_t);
7778 extern void simplify_aggr_init_expr (tree *);
7779 extern void finalize_nrv (tree, tree);
7780 extern tree omp_reduction_id (enum tree_code, tree, tree);
7781 extern tree cp_remove_omp_priv_cleanup_stmt (tree *, int *, void *);
7782 extern bool cp_check_omp_declare_reduction (tree);
7783 extern void finish_omp_declare_simd_methods (tree);
7784 extern tree finish_omp_clauses (tree, enum c_omp_region_type);
7785 extern tree push_omp_privatization_clauses (bool);
7786 extern void pop_omp_privatization_clauses (tree);
7787 extern void save_omp_privatization_clauses (vec<tree> &);
7788 extern void restore_omp_privatization_clauses (vec<tree> &);
7789 extern void finish_omp_threadprivate (tree);
7790 extern tree begin_omp_structured_block (void);
7791 extern tree finish_omp_structured_block (tree);
7792 extern tree finish_oacc_data (tree, tree);
7793 extern tree finish_oacc_host_data (tree, tree);
7794 extern tree finish_omp_construct (enum tree_code, tree, tree);
7795 extern tree begin_omp_parallel (void);
7796 extern tree finish_omp_parallel (tree, tree);
7797 extern tree begin_omp_task (void);
7798 extern tree finish_omp_task (tree, tree);
7799 extern tree finish_omp_for (location_t, enum tree_code,
7800 tree, tree, tree, tree, tree,
7801 tree, tree, vec<tree> *, tree);
7802 extern tree finish_omp_for_block (tree, tree);
7803 extern void finish_omp_atomic (location_t, enum tree_code,
7804 enum tree_code, tree, tree,
7805 tree, tree, tree, tree, tree,
7806 enum omp_memory_order, bool);
7807 extern void finish_omp_barrier (void);
7808 extern void finish_omp_depobj (location_t, tree,
7809 enum omp_clause_depend_kind,
7810 tree);
7811 extern void finish_omp_flush (int);
7812 extern void finish_omp_taskwait (void);
7813 extern void finish_omp_taskyield (void);
7814 extern void finish_omp_cancel (tree);
7815 extern void finish_omp_cancellation_point (tree);
7816 extern tree omp_privatize_field (tree, bool);
7817 extern tree begin_transaction_stmt (location_t, tree *, int);
7818 extern void finish_transaction_stmt (tree, tree, int, tree);
7819 extern tree build_transaction_expr (location_t, tree, int, tree);
7820 extern bool cxx_omp_create_clause_info (tree, tree, bool, bool,
7821 bool, bool);
7822 extern tree baselink_for_fns (tree);
7823 extern void finish_static_assert (tree, tree, location_t,
7824 bool, bool);
7825 extern tree finish_decltype_type (tree, bool, tsubst_flags_t);
7826 extern tree fold_builtin_is_corresponding_member (location_t, int, tree *);
7827 extern tree fold_builtin_is_pointer_inverconvertible_with_class (location_t, int, tree *);
7828 extern tree finish_trait_expr (location_t, enum cp_trait_kind, tree, tree);
7829 extern tree finish_trait_type (enum cp_trait_kind, tree, tree, tsubst_flags_t);
7830 extern tree build_lambda_expr (void);
7831 extern tree build_lambda_object (tree);
7832 extern tree begin_lambda_type (tree);
7833 extern tree lambda_capture_field_type (tree, bool, bool);
7834 extern tree lambda_proxy_type (tree);
7835 extern tree lambda_function (tree);
7836 extern void apply_deduced_return_type (tree, tree);
7837 extern tree add_capture (tree, tree, tree, bool, bool);
7838 extern tree add_default_capture (tree, tree, tree);
7839 extern void insert_capture_proxy (tree);
7840 extern void insert_pending_capture_proxies (void);
7841 extern bool is_capture_proxy (tree);
7842 extern bool is_normal_capture_proxy (tree);
7843 extern bool is_constant_capture_proxy (tree);
7844 extern void register_capture_members (tree);
7845 extern tree lambda_expr_this_capture (tree, int);
7846 extern void maybe_generic_this_capture (tree, tree);
7847 extern tree maybe_resolve_dummy (tree, bool);
7848 extern tree current_nonlambda_function (void);
7849 extern tree nonlambda_method_basetype (void);
7850 extern tree current_nonlambda_scope (void);
7851 extern tree current_lambda_expr (void);
7852 extern bool generic_lambda_fn_p (tree);
7853 extern tree do_dependent_capture (tree, bool = false);
7854 extern bool lambda_fn_in_template_p (tree);
7855 extern void maybe_add_lambda_conv_op (tree);
7856 extern bool is_lambda_ignored_entity (tree);
7857 extern bool lambda_static_thunk_p (tree);
7858 extern bool call_from_lambda_thunk_p (tree);
7859 extern tree finish_builtin_launder (location_t, tree,
7860 tsubst_flags_t);
7861 extern tree cp_build_vec_convert (tree, location_t, tree,
7862 tsubst_flags_t);
7863 extern tree cp_build_bit_cast (location_t, tree, tree,
7864 tsubst_flags_t);
7865 extern void start_lambda_scope (tree decl);
7866 extern void finish_lambda_scope (void);
7867 extern void record_lambda_scope (tree lambda);
7868 extern void record_lambda_scope_discriminator (tree lambda);
7869 extern void record_lambda_scope_sig_discriminator (tree lambda, tree fn);
7870 extern tree start_lambda_function (tree fn, tree lambda_expr);
7871 extern void finish_lambda_function (tree body);
7872 extern bool regenerated_lambda_fn_p (tree);
7873 extern tree lambda_regenerating_args (tree);
7874 extern tree most_general_lambda (tree);
7875 extern tree finish_omp_target (location_t, tree, tree, bool);
7876 extern void finish_omp_target_clauses (location_t, tree, tree *);
7878 /* in tree.cc */
7879 extern int cp_tree_operand_length (const_tree);
7880 extern int cp_tree_code_length (enum tree_code);
7881 extern void cp_free_lang_data (tree t);
7882 extern tree force_target_expr (tree, tree, tsubst_flags_t);
7883 extern tree build_target_expr_with_type (tree, tree, tsubst_flags_t);
7884 extern void lang_check_failed (const char *, int,
7885 const char *) ATTRIBUTE_NORETURN
7886 ATTRIBUTE_COLD;
7887 extern tree stabilize_expr (tree, tree *);
7888 extern void stabilize_call (tree, tree *);
7889 extern bool stabilize_init (tree, tree *);
7890 extern tree add_stmt_to_compound (tree, tree);
7891 extern void init_tree (void);
7892 extern bool pod_type_p (const_tree);
7893 extern bool layout_pod_type_p (const_tree);
7894 extern bool std_layout_type_p (const_tree);
7895 extern bool trivial_type_p (const_tree);
7896 extern bool trivially_copyable_p (const_tree);
7897 extern bool type_has_unique_obj_representations (const_tree);
7898 extern bool scalarish_type_p (const_tree);
7899 extern bool structural_type_p (tree, bool = false);
7900 extern bool type_has_nontrivial_default_init (const_tree);
7901 extern bool type_has_nontrivial_copy_init (const_tree);
7902 extern void maybe_warn_parm_abi (tree, location_t);
7903 extern bool class_tmpl_impl_spec_p (const_tree);
7904 extern int zero_init_p (const_tree);
7905 extern bool zero_init_expr_p (tree);
7906 extern bool check_abi_tag_redeclaration (const_tree, const_tree,
7907 const_tree);
7908 extern bool check_abi_tag_args (tree, tree);
7909 extern tree strip_typedefs (tree, bool * = NULL,
7910 unsigned int = 0);
7911 extern tree strip_typedefs_expr (tree, bool * = NULL,
7912 unsigned int = 0);
7913 extern tree copy_binfo (tree, tree, tree,
7914 tree *, int);
7915 extern int member_p (const_tree);
7916 extern cp_lvalue_kind real_lvalue_p (const_tree);
7917 extern cp_lvalue_kind lvalue_kind (const_tree);
7918 extern bool glvalue_p (const_tree);
7919 extern bool obvalue_p (const_tree);
7920 extern bool xvalue_p (const_tree);
7921 extern bool bitfield_p (const_tree);
7922 extern tree cp_stabilize_reference (tree);
7923 extern bool builtin_valid_in_constant_expr_p (const_tree);
7924 extern tree build_min (enum tree_code, tree, ...);
7925 extern tree build_min_nt_loc (location_t, enum tree_code,
7926 ...);
7927 extern tree build_min_non_dep (enum tree_code, tree, ...);
7928 extern tree build_min_non_dep_op_overload (enum tree_code, tree, tree, ...);
7929 extern tree build_min_non_dep_op_overload (tree, tree, tree,
7930 vec<tree, va_gc> *);
7931 extern tree build_min_nt_call_vec (tree, vec<tree, va_gc> *);
7932 extern tree build_min_non_dep_call_vec (tree, tree, vec<tree, va_gc> *);
7933 extern vec<tree, va_gc>* vec_copy_and_insert (vec<tree, va_gc>*, tree, unsigned);
7934 extern tree build_cplus_new (tree, tree, tsubst_flags_t);
7935 extern tree build_local_temp (tree);
7936 extern bool is_local_temp (tree);
7937 extern tree build_aggr_init_expr (tree, tree);
7938 extern tree get_target_expr (tree,
7939 tsubst_flags_t = tf_warning_or_error);
7940 extern tree build_cplus_array_type (tree, tree, int is_dep = -1);
7941 extern tree build_array_of_n_type (tree, int);
7942 extern bool array_of_runtime_bound_p (tree);
7943 extern bool vla_type_p (tree);
7944 extern tree build_array_copy (tree);
7945 extern tree build_vec_init_expr (tree, tree, tsubst_flags_t);
7946 extern tree expand_vec_init_expr (tree, tree, tsubst_flags_t,
7947 vec<tree,va_gc>** = nullptr);
7948 extern void diagnose_non_constexpr_vec_init (tree);
7949 extern tree hash_tree_cons (tree, tree, tree);
7950 extern tree hash_tree_chain (tree, tree);
7951 extern tree build_qualified_name (tree, tree, tree, bool);
7952 extern tree build_ref_qualified_type (tree, cp_ref_qualifier);
7953 extern tree make_binding_vec (tree, unsigned clusters CXX_MEM_STAT_INFO);
7954 inline tree ovl_first (tree) ATTRIBUTE_PURE;
7955 extern tree ovl_make (tree fn,
7956 tree next = NULL_TREE);
7957 extern tree ovl_insert (tree fn, tree maybe_ovl,
7958 int using_or_hidden = 0);
7959 extern tree ovl_skip_hidden (tree) ATTRIBUTE_PURE;
7960 extern void lookup_mark (tree lookup, bool val);
7961 extern tree lookup_add (tree fns, tree lookup);
7962 extern tree lookup_maybe_add (tree fns, tree lookup,
7963 bool deduping);
7964 extern int is_overloaded_fn (tree) ATTRIBUTE_PURE;
7965 extern bool really_overloaded_fn (tree) ATTRIBUTE_PURE;
7966 extern tree dependent_name (tree);
7967 extern tree call_expr_dependent_name (tree);
7968 extern tree maybe_get_fns (tree) ATTRIBUTE_PURE;
7969 extern tree get_fns (tree) ATTRIBUTE_PURE;
7970 extern tree get_first_fn (tree) ATTRIBUTE_PURE;
7971 extern tree ovl_scope (tree);
7972 extern const char *cxx_printable_name (tree, int);
7973 extern const char *cxx_printable_name_translate (tree, int);
7974 extern tree canonical_eh_spec (tree);
7975 extern tree build_cp_fntype_variant (tree, cp_ref_qualifier, tree, bool);
7976 extern tree build_exception_variant (tree, tree);
7977 extern void fixup_deferred_exception_variants (tree, tree);
7978 extern tree bind_template_template_parm (tree, tree);
7979 extern tree array_type_nelts_total (tree);
7980 extern tree array_type_nelts_top (tree);
7981 extern bool array_of_unknown_bound_p (const_tree);
7982 extern tree break_out_target_exprs (tree, bool = false);
7983 extern tree build_ctor_subob_ref (tree, tree, tree);
7984 extern tree replace_placeholders (tree, tree, bool * = NULL);
7985 extern bool find_placeholders (tree);
7986 extern tree get_type_decl (tree);
7987 extern tree decl_namespace_context (tree);
7988 extern bool decl_anon_ns_mem_p (tree);
7989 extern bool decl_internal_context_p (const_tree);
7990 extern tree lvalue_type (tree);
7991 extern tree error_type (tree);
7992 extern int varargs_function_p (const_tree);
7993 extern bool cp_tree_equal (tree, tree);
7994 extern tree no_linkage_check (tree, bool);
7995 extern void debug_binfo (tree);
7996 extern tree build_dummy_object (tree);
7997 extern tree maybe_dummy_object (tree, tree *);
7998 extern bool is_dummy_object (const_tree);
7999 extern bool is_byte_access_type (tree);
8000 extern bool is_byte_access_type_not_plain_char (tree);
8001 extern const struct attribute_spec cxx_attribute_table[];
8002 extern tree make_ptrmem_cst (tree, tree);
8003 extern tree cp_build_type_attribute_variant (tree, tree);
8004 extern tree cp_build_reference_type (tree, bool);
8005 extern tree move (tree);
8006 extern tree cp_build_qualified_type (tree, int,
8007 tsubst_flags_t = tf_warning_or_error);
8008 extern bool cv_qualified_p (const_tree);
8009 extern tree cv_unqualified (tree);
8010 extern special_function_kind special_function_p (const_tree);
8011 extern special_function_kind special_memfn_p (const_tree);
8012 extern int count_trees (tree);
8013 extern int char_type_p (tree);
8014 extern void verify_stmt_tree (tree);
8015 extern linkage_kind decl_linkage (tree);
8016 extern duration_kind decl_storage_duration (tree);
8017 extern tree cp_walk_subtrees (tree*, int*, walk_tree_fn,
8018 void*, hash_set<tree> *);
8019 #define cp_walk_tree(tp,func,data,pset) \
8020 walk_tree_1 (tp, func, data, pset, cp_walk_subtrees)
8021 #define cp_walk_tree_without_duplicates(tp,func,data) \
8022 walk_tree_without_duplicates_1 (tp, func, data, cp_walk_subtrees)
8023 extern tree rvalue (tree);
8024 extern tree convert_bitfield_to_declared_type (tree);
8025 extern tree cp_save_expr (tree);
8026 extern bool cast_valid_in_integral_constant_expression_p (tree);
8027 extern bool cxx_type_hash_eq (const_tree, const_tree);
8028 extern tree cxx_copy_lang_qualifiers (const_tree, const_tree);
8030 extern void cxx_print_statistics (void);
8031 extern bool maybe_warn_zero_as_null_pointer_constant (tree, location_t);
8033 /* in ptree.cc */
8034 extern void cxx_print_xnode (FILE *, tree, int);
8035 extern void cxx_print_decl (FILE *, tree, int);
8036 extern void cxx_print_type (FILE *, tree, int);
8037 extern void cxx_print_identifier (FILE *, tree, int);
8038 extern void cxx_print_error_function (diagnostic_context *,
8039 const char *,
8040 struct diagnostic_info *);
8042 /* in typeck.cc */
8043 /* Says how we should behave when comparing two arrays one of which
8044 has unknown bounds. */
8045 enum compare_bounds_t { bounds_none, bounds_either, bounds_first };
8047 extern bool cxx_mark_addressable (tree, bool = false);
8048 extern int string_conv_p (const_tree, const_tree, int);
8049 extern tree cp_truthvalue_conversion (tree, tsubst_flags_t);
8050 extern tree contextual_conv_bool (tree, tsubst_flags_t);
8051 extern tree condition_conversion (tree);
8052 extern tree require_complete_type (tree,
8053 tsubst_flags_t = tf_warning_or_error);
8054 extern tree complete_type (tree);
8055 extern tree complete_type_or_else (tree, tree);
8056 extern tree complete_type_or_maybe_complain (tree, tree, tsubst_flags_t);
8057 extern int cp_compare_floating_point_conversion_ranks (tree, tree);
8058 inline bool type_unknown_p (const_tree);
8059 enum { ce_derived, ce_type, ce_normal, ce_exact };
8060 extern bool comp_except_specs (const_tree, const_tree, int);
8061 extern bool comptypes (tree, tree, int);
8062 extern bool same_type_ignoring_top_level_qualifiers_p (tree, tree);
8063 extern bool similar_type_p (tree, tree);
8064 extern bool next_common_initial_sequence (tree &, tree &);
8065 extern bool layout_compatible_type_p (tree, tree);
8066 extern bool compparms (const_tree, const_tree);
8067 extern int comp_cv_qualification (const_tree, const_tree);
8068 extern int comp_cv_qualification (int, int);
8069 extern int comp_cv_qual_signature (tree, tree);
8070 extern tree cxx_sizeof_or_alignof_expr (location_t, tree,
8071 enum tree_code, bool, bool);
8072 extern tree cxx_sizeof_or_alignof_type (location_t, tree,
8073 enum tree_code, bool, bool);
8074 extern tree cxx_alignas_expr (tree);
8075 extern tree cxx_sizeof_nowarn (tree);
8076 extern tree is_bitfield_expr_with_lowered_type (const_tree);
8077 extern tree unlowered_expr_type (const_tree);
8078 extern tree decay_conversion (tree,
8079 tsubst_flags_t,
8080 bool = true);
8081 extern tree build_class_member_access_expr (cp_expr, tree, tree, bool,
8082 tsubst_flags_t);
8083 extern tree finish_class_member_access_expr (cp_expr, tree, bool,
8084 tsubst_flags_t);
8085 extern tree lookup_destructor (tree, tree, tree, tsubst_flags_t);
8086 extern tree build_dependent_operator_type (tree, enum tree_code, bool);
8087 extern tree build_x_indirect_ref (location_t, tree,
8088 ref_operator, tree,
8089 tsubst_flags_t);
8090 extern tree cp_build_indirect_ref (location_t, tree,
8091 ref_operator,
8092 tsubst_flags_t);
8093 extern tree cp_build_fold_indirect_ref (tree);
8094 extern tree build_array_ref (location_t, tree, tree);
8095 extern tree cp_build_array_ref (location_t, tree, tree,
8096 tsubst_flags_t);
8097 extern tree get_member_function_from_ptrfunc (tree *, tree, tsubst_flags_t);
8098 extern tree cp_build_function_call_nary (tree, tsubst_flags_t, ...)
8099 ATTRIBUTE_SENTINEL;
8100 extern tree cp_build_function_call_vec (tree, vec<tree, va_gc> **,
8101 tsubst_flags_t,
8102 tree = NULL_TREE);
8103 extern tree build_x_binary_op (const op_location_t &,
8104 enum tree_code, tree,
8105 enum tree_code, tree,
8106 enum tree_code, tree,
8107 tree *, tsubst_flags_t);
8108 inline tree build_x_binary_op (const op_location_t &loc,
8109 enum tree_code code, tree arg1, tree arg2,
8110 tsubst_flags_t complain)
8112 return build_x_binary_op (loc, code, arg1, TREE_CODE (arg1), arg2,
8113 TREE_CODE (arg2), NULL_TREE, NULL, complain);
8115 extern tree build_x_array_ref (location_t, tree, tree,
8116 tsubst_flags_t);
8117 extern tree build_x_unary_op (location_t,
8118 enum tree_code, cp_expr,
8119 tree, tsubst_flags_t);
8120 extern tree cp_build_addressof (location_t, tree,
8121 tsubst_flags_t);
8122 extern tree cp_build_addr_expr (tree, tsubst_flags_t);
8123 extern tree cp_build_unary_op (enum tree_code, tree, bool,
8124 tsubst_flags_t);
8125 extern tree genericize_compound_lvalue (tree);
8126 extern tree unary_complex_lvalue (enum tree_code, tree);
8127 extern tree build_x_conditional_expr (location_t, tree, tree, tree,
8128 tsubst_flags_t);
8129 extern tree build_x_compound_expr_from_list (tree, expr_list_kind,
8130 tsubst_flags_t);
8131 extern tree build_x_compound_expr_from_vec (vec<tree, va_gc> *,
8132 const char *, tsubst_flags_t);
8133 extern tree build_x_compound_expr (location_t, tree, tree,
8134 tree, tsubst_flags_t);
8135 extern tree build_compound_expr (location_t, tree, tree);
8136 extern tree cp_build_compound_expr (tree, tree, tsubst_flags_t);
8137 extern tree build_static_cast (location_t, tree, tree,
8138 tsubst_flags_t);
8139 extern tree build_reinterpret_cast (location_t, tree, tree,
8140 tsubst_flags_t);
8141 extern tree build_const_cast (location_t, tree, tree,
8142 tsubst_flags_t);
8143 extern tree build_c_cast (location_t, tree, tree);
8144 extern cp_expr build_c_cast (location_t loc, tree type,
8145 cp_expr expr);
8146 extern tree cp_build_c_cast (location_t, tree, tree,
8147 tsubst_flags_t);
8148 extern cp_expr build_x_modify_expr (location_t, tree,
8149 enum tree_code, tree,
8150 tree, tsubst_flags_t);
8151 extern tree cp_build_modify_expr (location_t, tree,
8152 enum tree_code, tree,
8153 tsubst_flags_t);
8154 extern tree convert_for_initialization (tree, tree, tree, int,
8155 impl_conv_rhs, tree, int,
8156 tsubst_flags_t);
8157 extern int comp_ptr_ttypes (tree, tree);
8158 extern bool comp_ptr_ttypes_const (tree, tree, compare_bounds_t);
8159 extern bool error_type_p (const_tree);
8160 extern bool ptr_reasonably_similar (const_tree, const_tree);
8161 extern tree build_ptrmemfunc (tree, tree, int, bool,
8162 tsubst_flags_t);
8163 extern int cp_type_quals (const_tree);
8164 extern int type_memfn_quals (const_tree);
8165 extern cp_ref_qualifier type_memfn_rqual (const_tree);
8166 extern tree apply_memfn_quals (tree, cp_cv_quals,
8167 cp_ref_qualifier = REF_QUAL_NONE);
8168 extern bool cp_has_mutable_p (const_tree);
8169 extern bool at_least_as_qualified_p (const_tree, const_tree);
8170 extern void cp_apply_type_quals_to_decl (int, tree);
8171 extern tree build_ptrmemfunc1 (tree, tree, tree);
8172 extern void expand_ptrmemfunc_cst (tree, tree *, tree *);
8173 extern tree type_after_usual_arithmetic_conversions (tree, tree);
8174 extern tree common_pointer_type (tree, tree);
8175 extern tree composite_pointer_type (const op_location_t &,
8176 tree, tree, tree, tree,
8177 composite_pointer_operation,
8178 tsubst_flags_t);
8179 extern tree merge_types (tree, tree);
8180 extern tree strip_array_domain (tree);
8181 extern tree check_return_expr (tree, bool *, bool *);
8182 extern tree spaceship_type (tree, tsubst_flags_t = tf_warning_or_error);
8183 extern tree genericize_spaceship (location_t, tree, tree, tree);
8184 extern tree cp_build_binary_op (const op_location_t &,
8185 enum tree_code, tree, tree,
8186 tsubst_flags_t);
8187 extern tree build_x_vec_perm_expr (location_t,
8188 tree, tree, tree,
8189 tsubst_flags_t);
8190 extern tree build_x_shufflevector (location_t,
8191 vec<tree, va_gc> *,
8192 tsubst_flags_t);
8193 #define cxx_sizeof(T) cxx_sizeof_or_alignof_type (input_location, T, SIZEOF_EXPR, false, true)
8194 extern tree build_simple_component_ref (tree, tree);
8195 extern tree build_ptrmemfunc_access_expr (tree, tree);
8196 extern tree build_address (tree);
8197 extern tree build_nop (tree, tree);
8198 extern tree non_reference (tree);
8199 extern tree lookup_anon_field (tree, tree);
8200 extern bool invalid_nonstatic_memfn_p (location_t, tree,
8201 tsubst_flags_t);
8202 extern tree convert_member_func_to_ptr (tree, tree, tsubst_flags_t);
8203 extern tree convert_ptrmem (tree, tree, bool, bool,
8204 tsubst_flags_t);
8205 extern int lvalue_or_else (tree, enum lvalue_use,
8206 tsubst_flags_t);
8207 extern void check_template_keyword (tree);
8208 extern bool check_raw_literal_operator (const_tree decl);
8209 extern bool check_literal_operator_args (const_tree, bool *, bool *);
8210 extern void maybe_warn_about_useless_cast (location_t, tree, tree,
8211 tsubst_flags_t);
8212 extern tree cp_perform_integral_promotions (tree, tsubst_flags_t);
8214 extern tree finish_left_unary_fold_expr (location_t, tree, int);
8215 extern tree finish_right_unary_fold_expr (location_t, tree, int);
8216 extern tree finish_binary_fold_expr (location_t, tree, tree, int);
8217 extern tree treat_lvalue_as_rvalue_p (tree, bool);
8218 extern bool decl_in_std_namespace_p (tree);
8219 extern void maybe_warn_pessimizing_move (tree, tree, bool);
8221 /* in typeck2.cc */
8222 extern void require_complete_eh_spec_types (tree, tree);
8223 extern bool cxx_incomplete_type_diagnostic (location_t, const_tree,
8224 const_tree, diagnostic_t);
8225 inline location_t
8226 loc_or_input_loc (location_t loc)
8228 return loc == UNKNOWN_LOCATION ? input_location : loc;
8231 /* Like EXPR_LOCATION, but also handle some tcc_exceptional that have
8232 locations. */
8234 inline location_t
8235 cp_expr_location (const_tree t_)
8237 tree t = CONST_CAST_TREE (t_);
8238 if (t == NULL_TREE)
8239 return UNKNOWN_LOCATION;
8240 switch (TREE_CODE (t))
8242 case LAMBDA_EXPR:
8243 return LAMBDA_EXPR_LOCATION (t);
8244 case STATIC_ASSERT:
8245 return STATIC_ASSERT_SOURCE_LOCATION (t);
8246 case TRAIT_EXPR:
8247 return TRAIT_EXPR_LOCATION (t);
8248 case PTRMEM_CST:
8249 return PTRMEM_CST_LOCATION (t);
8250 default:
8251 return EXPR_LOCATION (t);
8255 inline location_t
8256 cp_expr_loc_or_loc (const_tree t, location_t or_loc)
8258 location_t loc = cp_expr_location (t);
8259 if (loc == UNKNOWN_LOCATION)
8260 loc = or_loc;
8261 return loc;
8264 inline location_t
8265 cp_expr_loc_or_input_loc (const_tree t)
8267 return cp_expr_loc_or_loc (t, input_location);
8270 inline bool
8271 cxx_incomplete_type_diagnostic (const_tree value, const_tree type,
8272 diagnostic_t diag_kind)
8274 return cxx_incomplete_type_diagnostic (cp_expr_loc_or_input_loc (value),
8275 value, type, diag_kind);
8278 extern void cxx_incomplete_type_error (location_t, const_tree,
8279 const_tree);
8280 inline void
8281 cxx_incomplete_type_error (const_tree value, const_tree type)
8283 cxx_incomplete_type_diagnostic (value, type, DK_ERROR);
8286 extern void cxx_incomplete_type_inform (const_tree);
8287 extern tree error_not_base_type (tree, tree);
8288 extern tree binfo_or_else (tree, tree);
8289 extern void cxx_readonly_error (location_t, tree,
8290 enum lvalue_use);
8291 extern void complete_type_check_abstract (tree);
8292 extern int abstract_virtuals_error (tree, tree,
8293 tsubst_flags_t = tf_warning_or_error);
8294 extern int abstract_virtuals_error (abstract_class_use, tree,
8295 tsubst_flags_t = tf_warning_or_error);
8297 extern tree store_init_value (tree, tree, vec<tree, va_gc>**, int);
8298 extern tree split_nonconstant_init (tree, tree);
8299 extern bool check_narrowing (tree, tree, tsubst_flags_t,
8300 bool = false);
8301 extern bool ordinary_char_type_p (tree);
8302 extern bool array_string_literal_compatible_p (tree, tree);
8303 extern tree digest_init (tree, tree, tsubst_flags_t);
8304 extern tree digest_init_flags (tree, tree, int, tsubst_flags_t);
8305 extern tree digest_nsdmi_init (tree, tree, tsubst_flags_t);
8306 extern tree build_scoped_ref (tree, tree, tree *);
8307 extern tree build_x_arrow (location_t, tree,
8308 tsubst_flags_t);
8309 extern tree build_m_component_ref (tree, tree, tsubst_flags_t);
8310 extern tree build_functional_cast (location_t, tree, tree,
8311 tsubst_flags_t);
8312 extern tree add_exception_specifier (tree, tree, tsubst_flags_t);
8313 extern tree merge_exception_specifiers (tree, tree);
8314 extern void set_target_expr_eliding (tree);
8315 extern tree cp_build_init_expr (location_t, tree, tree);
8316 inline tree cp_build_init_expr (tree t, tree i)
8317 { return cp_build_init_expr (input_location, t, i); }
8319 /* in mangle.cc */
8320 extern void init_mangle (void);
8321 extern void mangle_decl (tree);
8322 extern const char *mangle_type_string (tree);
8323 extern tree mangle_typeinfo_for_type (tree);
8324 extern tree mangle_typeinfo_string_for_type (tree);
8325 extern tree mangle_vtbl_for_type (tree);
8326 extern tree mangle_vtt_for_type (tree);
8327 extern tree mangle_ctor_vtbl_for_type (tree, tree);
8328 extern tree mangle_thunk (tree, int, tree, tree, tree);
8329 extern tree mangle_guard_variable (tree);
8330 extern tree mangle_tls_init_fn (tree);
8331 extern tree mangle_tls_wrapper_fn (tree);
8332 extern bool decl_tls_wrapper_p (tree);
8333 extern tree mangle_ref_init_variable (tree);
8334 extern tree mangle_template_parm_object (tree);
8335 extern char *get_mangled_vtable_map_var_name (tree);
8336 extern bool mangle_return_type_p (tree);
8337 extern tree mangle_decomp (tree, vec<tree> &);
8338 extern void mangle_module_substitution (int);
8339 extern int mangle_module_component (tree id, bool partition);
8340 extern tree mangle_module_global_init (int);
8342 /* in dump.cc */
8343 extern bool cp_dump_tree (void *, tree);
8345 /* In cp/cp-objcp-common.cc. */
8347 extern alias_set_type cxx_get_alias_set (tree);
8348 extern bool cxx_warn_unused_global_decl (const_tree);
8349 extern size_t cp_tree_size (enum tree_code);
8350 extern bool cp_var_mod_type_p (tree, tree);
8351 extern void cxx_initialize_diagnostics (diagnostic_context *);
8352 extern int cxx_types_compatible_p (tree, tree);
8353 extern bool cxx_block_may_fallthru (const_tree);
8355 /* in cp-gimplify.cc */
8356 extern int cp_gimplify_expr (tree *, gimple_seq *,
8357 gimple_seq *);
8358 extern void cp_genericize (tree);
8359 extern bool cxx_omp_const_qual_no_mutable (tree);
8360 extern enum omp_clause_default_kind cxx_omp_predetermined_sharing_1 (tree);
8361 extern enum omp_clause_default_kind cxx_omp_predetermined_sharing (tree);
8362 extern enum omp_clause_defaultmap_kind cxx_omp_predetermined_mapping (tree);
8363 extern tree cxx_omp_clause_default_ctor (tree, tree, tree);
8364 extern tree cxx_omp_clause_copy_ctor (tree, tree, tree);
8365 extern tree cxx_omp_clause_assign_op (tree, tree, tree);
8366 extern tree cxx_omp_clause_dtor (tree, tree);
8367 extern void cxx_omp_finish_clause (tree, gimple_seq *, bool);
8368 extern bool cxx_omp_privatize_by_reference (const_tree);
8369 extern bool cxx_omp_disregard_value_expr (tree, bool);
8370 extern void cp_fold_function (tree);
8371 extern tree cp_fold_maybe_rvalue (tree, bool);
8372 extern tree cp_fold_rvalue (tree);
8373 extern tree cp_fully_fold (tree);
8374 extern tree cp_fully_fold_init (tree);
8375 extern tree predeclare_vla (tree);
8376 extern void clear_fold_cache (void);
8377 extern tree lookup_hotness_attribute (tree);
8378 extern tree process_stmt_hotness_attribute (tree, location_t);
8379 extern tree build_assume_call (location_t, tree);
8380 extern tree process_stmt_assume_attribute (tree, tree, location_t);
8381 extern bool simple_empty_class_p (tree, tree, tree_code);
8382 extern tree fold_builtin_source_location (const_tree);
8383 extern tree get_source_location_impl_type ();
8384 extern bool cp_fold_immediate (tree *, mce_value);
8386 /* in name-lookup.cc */
8387 extern tree strip_using_decl (tree);
8388 extern void diagnose_name_conflict (tree, tree);
8389 extern bool dependent_local_decl_p (tree);
8391 /* Tell the binding oracle what kind of binding we are looking for. */
8393 enum cp_oracle_request
8395 CP_ORACLE_IDENTIFIER
8398 /* If this is non-NULL, then it is a "binding oracle" which can lazily
8399 create bindings when needed by the C compiler. The oracle is told
8400 the name and type of the binding to create. It can call pushdecl
8401 or the like to ensure the binding is visible; or do nothing,
8402 leaving the binding untouched. c-decl.cc takes note of when the
8403 oracle has been called and will not call it again if it fails to
8404 create a given binding. */
8406 typedef void cp_binding_oracle_function (enum cp_oracle_request, tree identifier);
8408 extern cp_binding_oracle_function *cp_binding_oracle;
8410 /* Set during diagnostics to record the failed constraint. This is a
8411 TREE_LIST whose VALUE is the constraint and whose PURPOSE are the
8412 instantiation arguments Defined in pt.cc. */
8414 extern tree current_failed_constraint;
8416 /* An RAII class to manage the failed constraint. */
8418 struct diagnosing_failed_constraint
8420 diagnosing_failed_constraint (tree, tree, bool);
8421 ~diagnosing_failed_constraint ();
8422 static bool replay_errors_p ();
8424 bool diagnosing_error;
8427 /* in constraint.cc */
8429 extern cp_expr finish_constraint_or_expr (location_t, cp_expr, cp_expr);
8430 extern cp_expr finish_constraint_and_expr (location_t, cp_expr, cp_expr);
8431 extern cp_expr finish_constraint_primary_expr (cp_expr);
8432 extern tree finish_concept_definition (cp_expr, tree, tree);
8433 extern tree combine_constraint_expressions (tree, tree);
8434 extern tree append_constraint (tree, tree);
8435 extern tree get_constraints (const_tree);
8436 extern void set_constraints (tree, tree);
8437 extern void remove_constraints (tree);
8438 extern tree current_template_constraints (void);
8439 extern tree associate_classtype_constraints (tree);
8440 extern tree build_constraints (tree, tree);
8441 extern tree maybe_substitute_reqs_for (tree, const_tree);
8442 extern tree get_trailing_function_requirements (tree);
8443 extern tree get_shorthand_constraints (tree);
8445 extern tree build_concept_id (tree);
8446 extern tree build_type_constraint (tree, tree, tsubst_flags_t);
8447 extern tree build_concept_check (tree, tree, tsubst_flags_t);
8448 extern tree build_concept_check (tree, tree, tree, tsubst_flags_t);
8450 extern tree_pair finish_type_constraints (tree, tree, tsubst_flags_t);
8451 extern tree build_constrained_parameter (tree, tree, tree = NULL_TREE);
8452 extern void placeholder_extract_concept_and_args (tree, tree&, tree&);
8453 extern bool equivalent_placeholder_constraints (tree, tree);
8454 extern hashval_t hash_placeholder_constraint (tree);
8455 extern bool deduce_constrained_parameter (tree, tree&, tree&);
8456 extern tree resolve_constraint_check (tree);
8457 extern tree check_function_concept (tree);
8458 extern tree finish_template_introduction (tree, tree, location_t loc);
8459 extern bool valid_requirements_p (tree);
8460 extern tree finish_concept_name (tree);
8461 extern tree finish_shorthand_constraint (tree, tree);
8462 extern tree finish_requires_expr (location_t, tree, tree);
8463 extern tree finish_simple_requirement (location_t, tree);
8464 extern tree finish_type_requirement (location_t, tree);
8465 extern tree finish_compound_requirement (location_t, tree, tree, bool);
8466 extern tree finish_nested_requirement (location_t, tree);
8467 extern tree tsubst_requires_expr (tree, tree, tsubst_flags_t, tree);
8468 extern tree evaluate_requires_expr (tree);
8469 extern tree tsubst_constraint (tree, tree, tsubst_flags_t, tree);
8470 extern tree tsubst_constraint_info (tree, tree, tsubst_flags_t, tree);
8471 extern tree tsubst_parameter_mapping (tree, tree, tsubst_flags_t, tree);
8473 struct processing_constraint_expression_sentinel
8475 processing_constraint_expression_sentinel ();
8476 ~processing_constraint_expression_sentinel ();
8479 extern bool processing_constraint_expression_p ();
8481 extern tree unpack_concept_check (tree);
8482 extern tree evaluate_concept_check (tree);
8483 extern bool constraints_satisfied_p (tree, tree = NULL_TREE);
8484 extern bool* lookup_subsumption_result (tree, tree);
8485 extern bool save_subsumption_result (tree, tree, bool);
8486 extern tree find_template_parameters (tree, tree);
8487 extern bool equivalent_constraints (tree, tree);
8488 extern bool equivalently_constrained (tree, tree);
8489 extern bool strictly_subsumes (tree, tree);
8490 extern bool weakly_subsumes (tree, tree);
8491 extern int more_constrained (tree, tree);
8492 extern bool at_least_as_constrained (tree, tree);
8493 extern bool constraints_equivalent_p (tree, tree);
8494 extern bool atomic_constraints_identical_p (tree, tree);
8495 extern hashval_t iterative_hash_constraint (tree, hashval_t);
8496 extern hashval_t hash_atomic_constraint (tree);
8497 extern void diagnose_constraints (location_t, tree, tree);
8499 extern void note_failed_type_completion_for_satisfaction (tree);
8501 /* A structural hasher for ATOMIC_CONSTRs. */
8503 struct atom_hasher : default_hash_traits<tree>
8505 static hashval_t hash (tree t)
8507 ++comparing_specializations;
8508 hashval_t val = hash_atomic_constraint (t);
8509 --comparing_specializations;
8510 return val;
8513 static bool equal (tree t1, tree t2)
8515 ++comparing_specializations;
8516 bool eq = atomic_constraints_identical_p (t1, t2);
8517 --comparing_specializations;
8518 return eq;
8522 /* in logic.cc */
8523 extern bool subsumes (tree, tree);
8525 /* In class.cc */
8526 extern void set_current_access_from_decl (tree);
8527 extern void cp_finish_injected_record_type (tree);
8529 /* in vtable-class-hierarchy.cc */
8530 extern void vtv_compute_class_hierarchy_transitive_closure (void);
8531 extern void vtv_generate_init_routine (void);
8532 extern void vtv_save_class_info (tree);
8533 extern void vtv_recover_class_info (void);
8534 extern void vtv_build_vtable_verify_fndecl (void);
8536 /* In constexpr.cc */
8537 /* Representation of entries in the constexpr function definition table. */
8539 struct GTY((for_user)) constexpr_fundef {
8540 tree decl;
8541 tree body;
8542 tree parms;
8543 tree result;
8546 extern void fini_constexpr (void);
8547 extern bool literal_type_p (tree);
8548 extern void maybe_save_constexpr_fundef (tree);
8549 extern void register_constexpr_fundef (const constexpr_fundef &);
8550 extern constexpr_fundef *retrieve_constexpr_fundef (tree);
8551 extern bool is_valid_constexpr_fn (tree, bool);
8552 extern bool check_constexpr_ctor_body (tree, tree, bool);
8553 extern tree constexpr_fn_retval (tree);
8554 extern tree ensure_literal_type_for_constexpr_object (tree);
8555 extern bool potential_constant_expression (tree);
8556 extern bool is_constant_expression (tree);
8557 extern bool is_rvalue_constant_expression (tree);
8558 extern bool is_nondependent_constant_expression (tree);
8559 extern bool is_nondependent_static_init_expression (tree);
8560 extern bool is_static_init_expression (tree);
8561 extern bool is_std_allocator (tree);
8562 extern bool potential_rvalue_constant_expression (tree);
8563 extern bool require_potential_constant_expression (tree);
8564 extern bool require_constant_expression (tree);
8565 extern bool require_rvalue_constant_expression (tree);
8566 extern bool require_potential_rvalue_constant_expression (tree);
8567 extern bool require_potential_rvalue_constant_expression_fncheck (tree);
8568 extern tree cxx_constant_value (tree, tree = NULL_TREE,
8569 tsubst_flags_t = tf_error);
8570 inline tree cxx_constant_value (tree t, tsubst_flags_t complain)
8571 { return cxx_constant_value (t, NULL_TREE, complain); }
8572 extern void cxx_constant_dtor (tree, tree);
8573 extern tree cxx_constant_init (tree, tree = NULL_TREE);
8574 extern tree maybe_constant_value (tree, tree = NULL_TREE, mce_value = mce_unknown);
8575 extern tree maybe_constant_init (tree, tree = NULL_TREE, bool = false);
8576 extern tree fold_non_dependent_expr (tree,
8577 tsubst_flags_t = tf_warning_or_error,
8578 bool = false, tree = NULL_TREE);
8579 extern tree maybe_fold_non_dependent_expr (tree,
8580 tsubst_flags_t = tf_warning_or_error);
8581 extern tree fold_non_dependent_init (tree,
8582 tsubst_flags_t = tf_warning_or_error,
8583 bool = false, tree = NULL_TREE);
8584 extern tree fold_simple (tree);
8585 extern tree fold_to_constant (tree);
8586 extern bool reduced_constant_expression_p (tree);
8587 extern bool is_instantiation_of_constexpr (tree);
8588 extern bool var_in_constexpr_fn (tree);
8589 extern bool var_in_maybe_constexpr_fn (tree);
8590 extern bool maybe_constexpr_fn (tree);
8591 extern void explain_invalid_constexpr_fn (tree);
8592 extern vec<tree> cx_error_context (void);
8593 extern tree fold_sizeof_expr (tree);
8594 extern void clear_cv_and_fold_caches (void);
8595 extern tree unshare_constructor (tree CXX_MEM_STAT_INFO);
8596 extern bool decl_implicit_constexpr_p (tree);
8597 struct constexpr_ctx;
8598 extern tree find_failing_clause (const constexpr_ctx *ctx, tree);
8599 extern void diagnose_failing_condition (tree, location_t, bool,
8600 const constexpr_ctx * = nullptr);
8601 extern bool replace_decl (tree *, tree, tree);
8603 /* An RAII sentinel used to restrict constexpr evaluation so that it
8604 doesn't do anything that causes extra DECL_UID generation. */
8606 struct uid_sensitive_constexpr_evaluation_sentinel
8608 temp_override<bool> ovr;
8609 uid_sensitive_constexpr_evaluation_sentinel ();
8612 /* Used to determine whether uid_sensitive_constexpr_evaluation_p was
8613 called and returned true, indicating that we've restricted constexpr
8614 evaluation in order to avoid UID generation. We use this to control
8615 updates to the fold_cache and cv_cache. */
8617 struct uid_sensitive_constexpr_evaluation_checker
8619 const unsigned saved_counter;
8620 uid_sensitive_constexpr_evaluation_checker ();
8621 bool evaluation_restricted_p () const;
8624 void cp_tree_c_finish_parsing ();
8626 /* In cp-ubsan.cc */
8627 extern void cp_ubsan_maybe_instrument_member_call (tree);
8628 extern void cp_ubsan_instrument_member_accesses (tree *);
8629 extern tree cp_ubsan_maybe_instrument_downcast (location_t, tree, tree, tree);
8630 extern tree cp_ubsan_maybe_instrument_cast_to_vbase (location_t, tree, tree);
8631 extern void cp_ubsan_maybe_initialize_vtbl_ptrs (tree);
8633 /* In coroutines.cc */
8634 extern tree finish_co_return_stmt (location_t, tree);
8635 extern tree finish_co_await_expr (location_t, tree);
8636 extern tree finish_co_yield_expr (location_t, tree);
8637 extern tree coro_validate_builtin_call (tree,
8638 tsubst_flags_t = tf_warning_or_error);
8639 extern bool morph_fn_to_coro (tree, tree *, tree *);
8640 extern tree coro_get_actor_function (tree);
8641 extern tree coro_get_destroy_function (tree);
8642 extern tree coro_get_ramp_function (tree);
8644 /* contracts.cc */
8645 extern tree make_postcondition_variable (cp_expr);
8646 extern tree make_postcondition_variable (cp_expr, tree);
8647 extern tree grok_contract (tree, tree, tree, cp_expr, location_t);
8648 extern tree finish_contract_condition (cp_expr);
8650 /* Return the first contract in ATTRS, or NULL_TREE if there are none. */
8652 inline tree
8653 find_contract (tree attrs)
8655 while (attrs && !cxx_contract_attribute_p (attrs))
8656 attrs = TREE_CHAIN (attrs);
8657 return attrs;
8660 inline void
8661 set_decl_contracts (tree decl, tree contract_attrs)
8663 remove_contract_attributes (decl);
8664 DECL_ATTRIBUTES (decl) = chainon (DECL_ATTRIBUTES (decl), contract_attrs);
8667 /* Returns the computed semantic of the node. */
8669 inline contract_semantic
8670 get_contract_semantic (const_tree t)
8672 return (contract_semantic) (TREE_LANG_FLAG_3 (CONTRACT_CHECK (t))
8673 | (TREE_LANG_FLAG_2 (t) << 1)
8674 | (TREE_LANG_FLAG_0 ((t)) << 2));
8677 /* Sets the computed semantic of the node. */
8679 inline void
8680 set_contract_semantic (tree t, contract_semantic semantic)
8682 TREE_LANG_FLAG_3 (CONTRACT_CHECK (t)) = semantic & 0x01;
8683 TREE_LANG_FLAG_2 (t) = (semantic & 0x02) >> 1;
8684 TREE_LANG_FLAG_0 (t) = (semantic & 0x04) >> 2;
8687 /* Inline bodies. */
8689 inline tree
8690 ovl_first (tree node)
8692 while (TREE_CODE (node) == OVERLOAD)
8693 node = OVL_FUNCTION (node);
8694 return node;
8697 inline bool
8698 type_unknown_p (const_tree expr)
8700 return TREE_TYPE (expr) == unknown_type_node;
8703 inline hashval_t
8704 named_decl_hash::hash (const value_type decl)
8706 tree name = (TREE_CODE (decl) == BINDING_VECTOR
8707 ? BINDING_VECTOR_NAME (decl) : OVL_NAME (decl));
8708 return name ? IDENTIFIER_HASH_VALUE (name) : 0;
8711 inline bool
8712 named_decl_hash::equal (const value_type existing, compare_type candidate)
8714 tree name = (TREE_CODE (existing) == BINDING_VECTOR
8715 ? BINDING_VECTOR_NAME (existing) : OVL_NAME (existing));
8716 return candidate == name;
8719 inline bool
8720 null_node_p (const_tree expr)
8722 STRIP_ANY_LOCATION_WRAPPER (expr);
8723 return expr == null_node;
8726 /* True iff T is a variable template declaration. */
8727 inline bool
8728 variable_template_p (tree t)
8730 if (TREE_CODE (t) != TEMPLATE_DECL)
8731 return false;
8732 if (!PRIMARY_TEMPLATE_P (t))
8733 return false;
8734 if (tree r = DECL_TEMPLATE_RESULT (t))
8735 return VAR_P (r);
8736 return false;
8739 /* True iff T is a standard concept definition. This will return
8740 true for both the template and underlying declaration. */
8742 inline bool
8743 standard_concept_p (tree t)
8745 if (TREE_CODE (t) == TEMPLATE_DECL)
8746 t = DECL_TEMPLATE_RESULT (t);
8747 return TREE_CODE (t) == CONCEPT_DECL;
8750 /* True iff T is a variable concept definition. This will return
8751 true for both the template and the underlying declaration. */
8753 inline bool
8754 variable_concept_p (tree t)
8756 if (TREE_CODE (t) == TEMPLATE_DECL)
8757 t = DECL_TEMPLATE_RESULT (t);
8758 return VAR_P (t) && DECL_DECLARED_CONCEPT_P (t);
8761 /* True iff T is a function concept definition or an overload set
8762 containing multiple function concepts. This will return true for
8763 both the template and the underlying declaration. */
8765 inline bool
8766 function_concept_p (tree t)
8768 if (TREE_CODE (t) == OVERLOAD)
8769 t = OVL_FIRST (t);
8770 if (TREE_CODE (t) == TEMPLATE_DECL)
8771 t = DECL_TEMPLATE_RESULT (t);
8772 return TREE_CODE (t) == FUNCTION_DECL && DECL_DECLARED_CONCEPT_P (t);
8775 /* True iff T is a standard, variable, or function concept. */
8777 inline bool
8778 concept_definition_p (tree t)
8780 if (t == error_mark_node)
8781 return false;
8783 /* Adjust for function concept overloads. */
8784 if (TREE_CODE (t) == OVERLOAD)
8785 t = OVL_FIRST (t);
8787 /* See through templates. */
8788 if (TREE_CODE (t) == TEMPLATE_DECL)
8789 t = DECL_TEMPLATE_RESULT (t);
8791 /* The obvious and easy case. */
8792 if (TREE_CODE (t) == CONCEPT_DECL)
8793 return true;
8795 /* Definitely not a concept. */
8796 if (!VAR_OR_FUNCTION_DECL_P (t))
8797 return false;
8798 if (!DECL_LANG_SPECIFIC (t))
8799 return false;
8801 return DECL_DECLARED_CONCEPT_P (t);
8804 /* Same as above, but for const trees. */
8806 inline bool
8807 concept_definition_p (const_tree t)
8809 return concept_definition_p (const_cast<tree> (t));
8812 /* True if t is an expression that checks a concept. */
8814 inline bool
8815 concept_check_p (const_tree t)
8817 if (TREE_CODE (t) == CALL_EXPR)
8818 t = CALL_EXPR_FN (t);
8819 if (t && TREE_CODE (t) == TEMPLATE_ID_EXPR)
8820 return concept_definition_p (TREE_OPERAND (t, 0));
8821 return false;
8824 /* Helpers for IMPLICIT_RVALUE_P to look through automatic dereference. */
8826 inline bool
8827 implicit_rvalue_p (const_tree t)
8829 if (REFERENCE_REF_P (t))
8830 t = TREE_OPERAND (t, 0);
8831 return ((TREE_CODE (t) == NON_LVALUE_EXPR
8832 || TREE_CODE (t) == STATIC_CAST_EXPR)
8833 && IMPLICIT_RVALUE_P (t));
8835 inline tree
8836 set_implicit_rvalue_p (tree ot)
8838 tree t = ot;
8839 if (REFERENCE_REF_P (t))
8840 t = TREE_OPERAND (t, 0);
8841 IMPLICIT_RVALUE_P (t) = 1;
8842 return ot;
8845 /* True if t is a "constrained auto" type-specifier. */
8847 inline bool
8848 is_constrained_auto (const_tree t)
8850 return is_auto (t) && PLACEHOLDER_TYPE_CONSTRAINTS_INFO (t);
8853 /* True if CODE, a tree code, denotes a tree whose operand is not evaluated
8854 as per [expr.context], i.e., an operand to sizeof, typeof, decltype, or
8855 alignof. */
8857 inline bool
8858 unevaluated_p (tree_code code)
8860 return (code == DECLTYPE_TYPE
8861 || code == ALIGNOF_EXPR
8862 || code == SIZEOF_EXPR
8863 || code == NOEXCEPT_EXPR
8864 || code == REQUIRES_EXPR);
8867 /* RAII class to push/pop the access scope for T. */
8869 struct push_access_scope_guard
8871 tree decl;
8872 push_access_scope_guard (tree t)
8873 : decl (t)
8875 if (VAR_OR_FUNCTION_DECL_P (decl)
8876 || TREE_CODE (decl) == TYPE_DECL)
8877 push_access_scope (decl);
8878 else
8879 decl = NULL_TREE;
8881 ~push_access_scope_guard ()
8883 if (decl)
8884 pop_access_scope (decl);
8888 /* True if TYPE is an extended floating-point type. */
8890 inline bool
8891 extended_float_type_p (tree type)
8893 type = TYPE_MAIN_VARIANT (type);
8894 for (int i = 0; i < NUM_FLOATN_NX_TYPES; ++i)
8895 if (type == FLOATN_TYPE_NODE (i))
8896 return true;
8897 if (type == bfloat16_type_node)
8898 return true;
8899 return false;
8902 #if CHECKING_P
8903 namespace selftest {
8904 extern void run_cp_tests (void);
8906 /* Declarations for specific families of tests within cp,
8907 by source file, in alphabetical order. */
8908 extern void cp_pt_cc_tests ();
8909 extern void cp_tree_cc_tests (void);
8910 } // namespace selftest
8911 #endif /* #if CHECKING_P */
8913 /* -- end of C++ */
8915 #endif /* ! GCC_CP_TREE_H */