1 /* Definitions for c-common.cc.
2 Copyright (C) 1987-2022 Free Software Foundation, Inc.
3
4 This file is part of GCC.
5
6 GCC is free software; you can redistribute it and/or modify it under
7 the terms of the GNU General Public License as published by the Free
8 Software Foundation; either version 3, or (at your option) any later
9 version.
10
11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with GCC; see the file COPYING3. If not see
18 <http://www.gnu.org/licenses/>. */
19
20 #ifndef GCC_C_COMMON_H
21 #define GCC_C_COMMON_H
22
23 #include "splay-tree.h"
24 #include "cpplib.h"
25 #include "alias.h"
26 #include "tree.h"
27 #include "fold-const.h"
28 #include "wide-int-bitmask.h"
29
30 /* In order for the format checking to accept the C frontend
31 diagnostic framework extensions, you must include this file before
32 diagnostic-core.h, not after. The C front end formats are a subset of those
33 for C++, so they are the appropriate set to use in common code;
34 cp-tree.h overrides this for C++. */
35 #if defined(GCC_DIAGNOSTIC_CORE_H)
36 #error \
37 In order for the format checking to accept the C front end diagnostic \
38 framework extensions, you must include this file before diagnostic-core.h \
39 never after.
40 #endif
41 #ifndef GCC_DIAG_STYLE
42 #define GCC_DIAG_STYLE __gcc_cdiag__
43 #endif
44 #include "diagnostic-core.h"
45
46 /* Usage of TREE_LANG_FLAG_?:
47 0: IDENTIFIER_MARKED (used by search routines).
48 C_MAYBE_CONST_EXPR_INT_OPERANDS (in C_MAYBE_CONST_EXPR, for C)
49 1: C_DECLARED_LABEL_FLAG (in LABEL_DECL)
50 STATEMENT_LIST_STMT_EXPR (in STATEMENT_LIST)
51 C_MAYBE_CONST_EXPR_NON_CONST (in C_MAYBE_CONST_EXPR, for C)
52 2: unused
53 3: STATEMENT_LIST_HAS_LABEL (in STATEMENT_LIST)
54 4: unused
55 */
56
57 /* Reserved identifiers. This is the union of all the keywords for C,
58 C++, and Objective-C. All the type modifiers have to be in one
59 block at the beginning, because they are used as mask bits. There
60 are 28 type modifiers; if we add many more we will have to redesign
61 the mask mechanism. */
62
63 enum rid
64 {
65 /* Modifiers: */
66 /* C, in empirical order of frequency. */
67 RID_STATIC = 0,
68 RID_UNSIGNED, RID_LONG, RID_CONST, RID_EXTERN,
69 RID_REGISTER, RID_TYPEDEF, RID_SHORT, RID_INLINE,
70 RID_VOLATILE, RID_SIGNED, RID_AUTO, RID_RESTRICT,
71 RID_NORETURN, RID_ATOMIC,
72
73 /* C extensions */
74 RID_COMPLEX, RID_THREAD, RID_SAT,
75
76 /* C++ */
77 RID_FRIEND, RID_VIRTUAL, RID_EXPLICIT, RID_EXPORT, RID_MUTABLE,
78
79 /* ObjC ("PQ" reserved words - they do not appear after a '@' and
80 are keywords only in specific contexts) */
81 RID_IN, RID_OUT, RID_INOUT, RID_BYCOPY, RID_BYREF, RID_ONEWAY,
82
83 /* ObjC ("PATTR" reserved words - they do not appear after a '@'
84 and are keywords only as property attributes) */
85 RID_GETTER, RID_SETTER,
86 RID_READONLY, RID_READWRITE,
87 RID_ASSIGN, RID_RETAIN, RID_COPY,
88 RID_PROPATOMIC, RID_NONATOMIC,
89
90 /* ObjC nullability support keywords that also can appear in the
91 property attribute context. These values should remain contiguous
92 with the other property attributes. */
93 RID_NULL_UNSPECIFIED, RID_NULLABLE, RID_NONNULL, RID_NULL_RESETTABLE,
94
95 /* C (reserved and imaginary types not implemented, so any use is a
96 syntax error) */
97 RID_IMAGINARY,
98
99 /* C */
100 RID_INT, RID_CHAR, RID_FLOAT, RID_DOUBLE, RID_VOID,
101 RID_ENUM, RID_STRUCT, RID_UNION, RID_IF, RID_ELSE,
102 RID_WHILE, RID_DO, RID_FOR, RID_SWITCH, RID_CASE,
103 RID_DEFAULT, RID_BREAK, RID_CONTINUE, RID_RETURN, RID_GOTO,
104 RID_SIZEOF,
105
106 /* C extensions */
107 RID_ASM, RID_TYPEOF, RID_ALIGNOF, RID_ATTRIBUTE, RID_VA_ARG,
108 RID_EXTENSION, RID_IMAGPART, RID_REALPART, RID_LABEL, RID_CHOOSE_EXPR,
109 RID_TYPES_COMPATIBLE_P, RID_BUILTIN_COMPLEX, RID_BUILTIN_SHUFFLE,
110 RID_BUILTIN_SHUFFLEVECTOR, RID_BUILTIN_CONVERTVECTOR, RID_BUILTIN_TGMATH,
111 RID_BUILTIN_HAS_ATTRIBUTE, RID_BUILTIN_ASSOC_BARRIER,
112 RID_DFLOAT32, RID_DFLOAT64, RID_DFLOAT128,
113
114 /* TS 18661-3 keywords, in the same sequence as the TI_* values. */
115 RID_FLOAT16,
116 RID_FLOATN_NX_FIRST = RID_FLOAT16,
117 RID_FLOAT32,
118 RID_FLOAT64,
119 RID_FLOAT128,
120 RID_FLOAT32X,
121 RID_FLOAT64X,
122 RID_FLOAT128X,
123 #define CASE_RID_FLOATN_NX \
124 case RID_FLOAT16: case RID_FLOAT32: case RID_FLOAT64: case RID_FLOAT128: \
125 case RID_FLOAT32X: case RID_FLOAT64X: case RID_FLOAT128X
126
127 RID_FRACT, RID_ACCUM, RID_AUTO_TYPE, RID_BUILTIN_CALL_WITH_STATIC_CHAIN,
128
129 /* "__GIMPLE", for the GIMPLE-parsing extension to the C frontend. */
130 RID_GIMPLE,
131
132 /* "__PHI", for parsing PHI function in GIMPLE FE. */
133 RID_PHI,
134
135 /* "__RTL", for the RTL-parsing extension to the C frontend. */
136 RID_RTL,
137
138 /* C11 */
139 RID_ALIGNAS, RID_GENERIC,
140
141 /* This means to warn that this is a C++ keyword, and then treat it
142 as a normal identifier. */
143 RID_CXX_COMPAT_WARN,
144
145 /* GNU transactional memory extension */
146 RID_TRANSACTION_ATOMIC, RID_TRANSACTION_RELAXED, RID_TRANSACTION_CANCEL,
147
148 /* Too many ways of getting the name of a function as a string */
149 RID_FUNCTION_NAME, RID_PRETTY_FUNCTION_NAME, RID_C99_FUNCTION_NAME,
150
151 /* C++ (some of these are keywords in Objective-C as well, but only
152 if they appear after a '@') */
153 RID_BOOL, RID_WCHAR, RID_CLASS,
154 RID_PUBLIC, RID_PRIVATE, RID_PROTECTED,
155 RID_TEMPLATE, RID_NULL, RID_CATCH,
156 RID_DELETE, RID_FALSE, RID_NAMESPACE,
157 RID_NEW, RID_OFFSETOF, RID_OPERATOR,
158 RID_THIS, RID_THROW, RID_TRUE,
159 RID_TRY, RID_TYPENAME, RID_TYPEID,
160 RID_USING, RID_CHAR16, RID_CHAR32,
161
162 /* casts */
163 RID_CONSTCAST, RID_DYNCAST, RID_REINTCAST, RID_STATCAST,
164
165 /* C++ extensions */
166 RID_ADDRESSOF, RID_BASES,
167 RID_BUILTIN_LAUNDER, RID_DIRECT_BASES,
168 RID_HAS_NOTHROW_ASSIGN, RID_HAS_NOTHROW_CONSTRUCTOR,
169 RID_HAS_NOTHROW_COPY, RID_HAS_TRIVIAL_ASSIGN,
170 RID_HAS_TRIVIAL_CONSTRUCTOR, RID_HAS_TRIVIAL_COPY,
171 RID_HAS_TRIVIAL_DESTRUCTOR, RID_HAS_UNIQUE_OBJ_REPRESENTATIONS,
172 RID_HAS_VIRTUAL_DESTRUCTOR, RID_BUILTIN_BIT_CAST,
173 RID_IS_ABSTRACT, RID_IS_AGGREGATE,
174 RID_IS_BASE_OF, RID_IS_CLASS,
175 RID_IS_EMPTY, RID_IS_ENUM,
176 RID_IS_FINAL, RID_IS_LAYOUT_COMPATIBLE,
177 RID_IS_LITERAL_TYPE,
178 RID_IS_POINTER_INTERCONVERTIBLE_BASE_OF,
179 RID_IS_POD, RID_IS_POLYMORPHIC,
180 RID_IS_SAME_AS,
181 RID_IS_STD_LAYOUT, RID_IS_TRIVIAL,
182 RID_IS_TRIVIALLY_ASSIGNABLE, RID_IS_TRIVIALLY_CONSTRUCTIBLE,
183 RID_IS_TRIVIALLY_COPYABLE,
184 RID_IS_UNION, RID_UNDERLYING_TYPE,
185 RID_IS_ASSIGNABLE, RID_IS_CONSTRUCTIBLE,
186 RID_IS_NOTHROW_ASSIGNABLE, RID_IS_NOTHROW_CONSTRUCTIBLE,
187
188 /* C++11 */
189 RID_CONSTEXPR, RID_DECLTYPE, RID_NOEXCEPT, RID_NULLPTR, RID_STATIC_ASSERT,
190
191 /* C++20 */
192 RID_CONSTINIT, RID_CONSTEVAL,
193
194 /* char8_t */
195 RID_CHAR8,
196
197 /* C++ concepts */
198 RID_CONCEPT, RID_REQUIRES,
199
200 /* C++ modules. */
201 RID__MODULE, RID__IMPORT, RID__EXPORT, /* Internal tokens. */
202
203 /* C++ coroutines */
204 RID_CO_AWAIT, RID_CO_YIELD, RID_CO_RETURN,
205
206 /* C++ transactional memory. */
207 RID_ATOMIC_NOEXCEPT, RID_ATOMIC_CANCEL, RID_SYNCHRONIZED,
208
209 /* Objective-C ("AT" reserved words - they are only keywords when
210 they follow '@') */
211 RID_AT_ENCODE, RID_AT_END,
212 RID_AT_CLASS, RID_AT_ALIAS, RID_AT_DEFS,
213 RID_AT_PRIVATE, RID_AT_PROTECTED, RID_AT_PUBLIC, RID_AT_PACKAGE,
214 RID_AT_PROTOCOL, RID_AT_SELECTOR,
215 RID_AT_THROW, RID_AT_TRY, RID_AT_CATCH,
216 RID_AT_FINALLY, RID_AT_SYNCHRONIZED,
217 RID_AT_OPTIONAL, RID_AT_REQUIRED, RID_AT_PROPERTY,
218 RID_AT_SYNTHESIZE, RID_AT_DYNAMIC,
219 RID_AT_INTERFACE,
220 RID_AT_IMPLEMENTATION,
221
222 /* Named address support, mapping the keyword to a particular named address
223 number. Named address space 0 is reserved for the generic address. If
224 there are more than 254 named addresses, the addr_space_t type will need
225 to be grown from an unsigned char to unsigned short. */
226 RID_ADDR_SPACE_0, /* generic address */
227 RID_ADDR_SPACE_1,
228 RID_ADDR_SPACE_2,
229 RID_ADDR_SPACE_3,
230 RID_ADDR_SPACE_4,
231 RID_ADDR_SPACE_5,
232 RID_ADDR_SPACE_6,
233 RID_ADDR_SPACE_7,
234 RID_ADDR_SPACE_8,
235 RID_ADDR_SPACE_9,
236 RID_ADDR_SPACE_10,
237 RID_ADDR_SPACE_11,
238 RID_ADDR_SPACE_12,
239 RID_ADDR_SPACE_13,
240 RID_ADDR_SPACE_14,
241 RID_ADDR_SPACE_15,
242
243 RID_FIRST_ADDR_SPACE = RID_ADDR_SPACE_0,
244 RID_LAST_ADDR_SPACE = RID_ADDR_SPACE_15,
245
246 /* __intN keywords. The _N_M here doesn't correspond to the intN
247 in the keyword; use the bitsize in int_n_t_data_t[M] for that.
248 For example, if int_n_t_data_t[0].bitsize is 13, then RID_INT_N_0
249 is for __int13. */
250
251 /* Note that the range to use is RID_FIRST_INT_N through
252 RID_FIRST_INT_N + NUM_INT_N_ENTS - 1 and c-parser.cc has a list of
253 all RID_INT_N_* in a case statement. */
254
255 RID_INT_N_0,
256 RID_INT_N_1,
257 RID_INT_N_2,
258 RID_INT_N_3,
259
260 RID_FIRST_INT_N = RID_INT_N_0,
261 RID_LAST_INT_N = RID_INT_N_3,
262
263 RID_MAX,
264
265 RID_FIRST_MODIFIER = RID_STATIC,
266 RID_LAST_MODIFIER = RID_ONEWAY,
267
268 RID_FIRST_CXX11 = RID_CONSTEXPR,
269 RID_LAST_CXX11 = RID_STATIC_ASSERT,
270 RID_FIRST_CXX20 = RID_CONSTINIT,
271 RID_LAST_CXX20 = RID_CONSTINIT,
272 RID_FIRST_AT = RID_AT_ENCODE,
273 RID_LAST_AT = RID_AT_IMPLEMENTATION,
274 RID_FIRST_PQ = RID_IN,
275 RID_LAST_PQ = RID_ONEWAY,
276 RID_FIRST_PATTR = RID_GETTER,
277 RID_LAST_PATTR = RID_NULL_RESETTABLE
278 };
279
280 #define OBJC_IS_AT_KEYWORD(rid) \
281 ((unsigned int) (rid) >= (unsigned int) RID_FIRST_AT && \
282 (unsigned int) (rid) <= (unsigned int) RID_LAST_AT)
283
284 #define OBJC_IS_PQ_KEYWORD(rid) \
285 ((unsigned int) (rid) >= (unsigned int) RID_FIRST_PQ && \
286 (unsigned int) (rid) <= (unsigned int) RID_LAST_PQ)
287
288 /* Keywords permitted in an @property attribute context. */
289 #define OBJC_IS_PATTR_KEYWORD(rid) \
290 ((((unsigned int) (rid) >= (unsigned int) RID_FIRST_PATTR && \
291 (unsigned int) (rid) <= (unsigned int) RID_LAST_PATTR)) \
292 || rid == RID_CLASS)
293
294 /* OBJC_IS_CXX_KEYWORD recognizes the 'CXX_OBJC' keywords (such as
295 'class') which are shared in a subtle way between Objective-C and
296 C++. When the lexer is lexing in Objective-C/Objective-C++, if it
297 finds '@' followed by one of these identifiers (eg, '@class'), it
298 recognizes the whole as an Objective-C keyword. If the identifier
299 is found elsewhere, it follows the rules of the C/C++ language.
300 */
301 #define OBJC_IS_CXX_KEYWORD(rid) \
302 (rid == RID_CLASS || rid == RID_SYNCHRONIZED \
303 || rid == RID_PUBLIC || rid == RID_PROTECTED || rid == RID_PRIVATE \
304 || rid == RID_TRY || rid == RID_THROW || rid == RID_CATCH)
305
306 /* The elements of `ridpointers' are identifier nodes for the reserved
307 type names and storage classes. It is indexed by a RID_... value. */
308 extern GTY ((length ("(int) RID_MAX"))) tree *ridpointers;
309
310 /* Standard named or nameless data types of the C compiler. */
311
312 enum c_tree_index
313 {
314 CTI_CHAR8_TYPE,
315 CTI_CHAR16_TYPE,
316 CTI_CHAR32_TYPE,
317 CTI_WCHAR_TYPE,
318 CTI_UNDERLYING_WCHAR_TYPE,
319 CTI_WINT_TYPE,
320 CTI_SIGNED_SIZE_TYPE, /* For format checking only. */
321 CTI_UNSIGNED_PTRDIFF_TYPE, /* For format checking only. */
322 CTI_INTMAX_TYPE,
323 CTI_UINTMAX_TYPE,
324 CTI_WIDEST_INT_LIT_TYPE,
325 CTI_WIDEST_UINT_LIT_TYPE,
326
327 /* Types for <stdint.h>, that may not be defined on all
328 targets. */
329 CTI_SIG_ATOMIC_TYPE,
330 CTI_INT8_TYPE,
331 CTI_INT16_TYPE,
332 CTI_INT32_TYPE,
333 CTI_INT64_TYPE,
334 CTI_UINT8_TYPE,
335 CTI_UINT16_TYPE,
336 CTI_UINT32_TYPE,
337 CTI_UINT64_TYPE,
338 CTI_INT_LEAST8_TYPE,
339 CTI_INT_LEAST16_TYPE,
340 CTI_INT_LEAST32_TYPE,
341 CTI_INT_LEAST64_TYPE,
342 CTI_UINT_LEAST8_TYPE,
343 CTI_UINT_LEAST16_TYPE,
344 CTI_UINT_LEAST32_TYPE,
345 CTI_UINT_LEAST64_TYPE,
346 CTI_INT_FAST8_TYPE,
347 CTI_INT_FAST16_TYPE,
348 CTI_INT_FAST32_TYPE,
349 CTI_INT_FAST64_TYPE,
350 CTI_UINT_FAST8_TYPE,
351 CTI_UINT_FAST16_TYPE,
352 CTI_UINT_FAST32_TYPE,
353 CTI_UINT_FAST64_TYPE,
354 CTI_INTPTR_TYPE,
355 CTI_UINTPTR_TYPE,
356
357 CTI_CHAR_ARRAY_TYPE,
358 CTI_CHAR8_ARRAY_TYPE,
359 CTI_CHAR16_ARRAY_TYPE,
360 CTI_CHAR32_ARRAY_TYPE,
361 CTI_WCHAR_ARRAY_TYPE,
362 CTI_STRING_TYPE,
363 CTI_CONST_STRING_TYPE,
364
365 /* Type for boolean expressions (bool in C++, int in C). */
366 CTI_TRUTHVALUE_TYPE,
367 CTI_TRUTHVALUE_TRUE,
368 CTI_TRUTHVALUE_FALSE,
369
370 CTI_DEFAULT_FUNCTION_TYPE,
371
372 CTI_NULL,
373
374 /* These are not types, but we have to look them up all the time. */
375 CTI_FUNCTION_NAME_DECL,
376 CTI_PRETTY_FUNCTION_NAME_DECL,
377 CTI_C99_FUNCTION_NAME_DECL,
378
379 CTI_MODULE_HWM,
380 /* Below here entities change during compilation. */
381
382 CTI_SAVED_FUNCTION_NAME_DECLS,
383
384 CTI_MAX
385 };
386
387 #define C_CPP_HASHNODE(id) \
388 (&(((struct c_common_identifier *) (id))->node))
389 #define C_RID_CODE(id) \
390 ((enum rid) (((struct c_common_identifier *) (id))->node.rid_code))
391 #define C_SET_RID_CODE(id, code) \
392 (((struct c_common_identifier *) (id))->node.rid_code = (unsigned char) code)
393
394 /* Identifier part common to the C front ends. Inherits from
395 tree_identifier, despite appearances. */
396 struct GTY(()) c_common_identifier {
397 struct tree_common common;
398 struct cpp_hashnode node;
399 };
400
401 /* An entry in the reserved keyword table. */
402
403 struct c_common_resword
404 {
405 const char *const word;
406 ENUM_BITFIELD(rid) const rid : 16;
407 const unsigned int disable : 16;
408 };
409
410 /* Mode used to build pointers (VOIDmode means ptr_mode). */
411
412 extern machine_mode c_default_pointer_mode;
413
414 /* Extra cpp_ttype values for C++. */
415
416 /* A token type for template-ids. If a template-id is processed while
417 parsing tentatively, it is replaced with a CPP_TEMPLATE_ID token;
418 the value of the CPP_TEMPLATE_ID is whatever was returned by
419 cp_parser_template_id. */
420 #define CPP_TEMPLATE_ID ((enum cpp_ttype) (CPP_KEYWORD + 1))
421
422 /* A token type for nested-name-specifiers. If a
423 nested-name-specifier is processed while parsing tentatively, it is
424 replaced with a CPP_NESTED_NAME_SPECIFIER token; the value of the
425 CPP_NESTED_NAME_SPECIFIER is whatever was returned by
426 cp_parser_nested_name_specifier_opt. */
427 #define CPP_NESTED_NAME_SPECIFIER ((enum cpp_ttype) (CPP_TEMPLATE_ID + 1))
428
429 /* A token type for pre-parsed C++0x decltype. */
430 #define CPP_DECLTYPE ((enum cpp_ttype) (CPP_NESTED_NAME_SPECIFIER + 1))
431
432 /* A token type for pre-parsed primary-expression (lambda- or statement-). */
433 #define CPP_PREPARSED_EXPR ((enum cpp_ttype) (CPP_DECLTYPE + 1))
434
435 /* The number of token types, including C++-specific ones. */
436 #define N_CP_TTYPES ((int) (CPP_PREPARSED_EXPR + 1))
437
438 /* Disable mask. Keywords are disabled if (reswords[i].disable &
439 mask) is _true_. Thus for keywords which are present in all
440 languages the disable field is zero. */
441
442 #define D_CONLY 0x0001 /* C only (not in C++). */
443 #define D_CXXONLY 0x0002 /* C++ only (not in C). */
444 #define D_C99 0x0004 /* In C, C99 only. */
445 #define D_CXX11 0x0008 /* In C++, C++11 only. */
446 #define D_EXT 0x0010 /* GCC extension. */
447 #define D_EXT89 0x0020 /* GCC extension incorporated in C99. */
448 #define D_ASM 0x0040 /* Disabled by -fno-asm. */
449 #define D_OBJC 0x0080 /* In Objective C and neither C nor C++. */
450 #define D_CXX_OBJC 0x0100 /* In Objective C, and C++, but not C. */
451 #define D_CXXWARN 0x0200 /* In C warn with -Wcxx-compat. */
452 #define D_CXX_CONCEPTS 0x0400 /* In C++, only with concepts. */
453 #define D_TRANSMEM 0X0800 /* C++ transactional memory TS. */
454 #define D_CXX_CHAR8_T 0X1000 /* In C++, only with -fchar8_t. */
455 #define D_CXX20 0x2000 /* In C++, C++20 only. */
456 #define D_CXX_COROUTINES 0x4000 /* In C++, only with coroutines. */
457 #define D_CXX_MODULES 0x8000 /* In C++, only with modules. */
458
459 #define D_CXX_CONCEPTS_FLAGS D_CXXONLY | D_CXX_CONCEPTS
460 #define D_CXX_CHAR8_T_FLAGS D_CXXONLY | D_CXX_CHAR8_T
461 #define D_CXX_MODULES_FLAGS (D_CXXONLY | D_CXX_MODULES)
462 #define D_CXX_COROUTINES_FLAGS (D_CXXONLY | D_CXX_COROUTINES)
463
464 /* The reserved keyword table. */
465 extern const struct c_common_resword c_common_reswords[];
466
467 /* The number of items in the reserved keyword table. */
468 extern const unsigned int num_c_common_reswords;
469
470 #define char8_type_node c_global_trees[CTI_CHAR8_TYPE]
471 #define char16_type_node c_global_trees[CTI_CHAR16_TYPE]
472 #define char32_type_node c_global_trees[CTI_CHAR32_TYPE]
473 #define wchar_type_node c_global_trees[CTI_WCHAR_TYPE]
474 #define underlying_wchar_type_node c_global_trees[CTI_UNDERLYING_WCHAR_TYPE]
475 #define wint_type_node c_global_trees[CTI_WINT_TYPE]
476 #define signed_size_type_node c_global_trees[CTI_SIGNED_SIZE_TYPE]
477 #define unsigned_ptrdiff_type_node c_global_trees[CTI_UNSIGNED_PTRDIFF_TYPE]
478 #define intmax_type_node c_global_trees[CTI_INTMAX_TYPE]
479 #define uintmax_type_node c_global_trees[CTI_UINTMAX_TYPE]
480 #define widest_integer_literal_type_node c_global_trees[CTI_WIDEST_INT_LIT_TYPE]
481 #define widest_unsigned_literal_type_node c_global_trees[CTI_WIDEST_UINT_LIT_TYPE]
482
483 #define sig_atomic_type_node c_global_trees[CTI_SIG_ATOMIC_TYPE]
484 #define int8_type_node c_global_trees[CTI_INT8_TYPE]
485 #define int16_type_node c_global_trees[CTI_INT16_TYPE]
486 #define int32_type_node c_global_trees[CTI_INT32_TYPE]
487 #define int64_type_node c_global_trees[CTI_INT64_TYPE]
488 #define uint8_type_node c_global_trees[CTI_UINT8_TYPE]
489 #define c_uint16_type_node c_global_trees[CTI_UINT16_TYPE]
490 #define c_uint32_type_node c_global_trees[CTI_UINT32_TYPE]
491 #define c_uint64_type_node c_global_trees[CTI_UINT64_TYPE]
492 #define int_least8_type_node c_global_trees[CTI_INT_LEAST8_TYPE]
493 #define int_least16_type_node c_global_trees[CTI_INT_LEAST16_TYPE]
494 #define int_least32_type_node c_global_trees[CTI_INT_LEAST32_TYPE]
495 #define int_least64_type_node c_global_trees[CTI_INT_LEAST64_TYPE]
496 #define uint_least8_type_node c_global_trees[CTI_UINT_LEAST8_TYPE]
497 #define uint_least16_type_node c_global_trees[CTI_UINT_LEAST16_TYPE]
498 #define uint_least32_type_node c_global_trees[CTI_UINT_LEAST32_TYPE]
499 #define uint_least64_type_node c_global_trees[CTI_UINT_LEAST64_TYPE]
500 #define int_fast8_type_node c_global_trees[CTI_INT_FAST8_TYPE]
501 #define int_fast16_type_node c_global_trees[CTI_INT_FAST16_TYPE]
502 #define int_fast32_type_node c_global_trees[CTI_INT_FAST32_TYPE]
503 #define int_fast64_type_node c_global_trees[CTI_INT_FAST64_TYPE]
504 #define uint_fast8_type_node c_global_trees[CTI_UINT_FAST8_TYPE]
505 #define uint_fast16_type_node c_global_trees[CTI_UINT_FAST16_TYPE]
506 #define uint_fast32_type_node c_global_trees[CTI_UINT_FAST32_TYPE]
507 #define uint_fast64_type_node c_global_trees[CTI_UINT_FAST64_TYPE]
508 #define intptr_type_node c_global_trees[CTI_INTPTR_TYPE]
509 #define uintptr_type_node c_global_trees[CTI_UINTPTR_TYPE]
510
511 #define truthvalue_type_node c_global_trees[CTI_TRUTHVALUE_TYPE]
512 #define truthvalue_true_node c_global_trees[CTI_TRUTHVALUE_TRUE]
513 #define truthvalue_false_node c_global_trees[CTI_TRUTHVALUE_FALSE]
514
515 #define char_array_type_node c_global_trees[CTI_CHAR_ARRAY_TYPE]
516 #define char8_array_type_node c_global_trees[CTI_CHAR8_ARRAY_TYPE]
517 #define char16_array_type_node c_global_trees[CTI_CHAR16_ARRAY_TYPE]
518 #define char32_array_type_node c_global_trees[CTI_CHAR32_ARRAY_TYPE]
519 #define wchar_array_type_node c_global_trees[CTI_WCHAR_ARRAY_TYPE]
520 #define string_type_node c_global_trees[CTI_STRING_TYPE]
521 #define const_string_type_node c_global_trees[CTI_CONST_STRING_TYPE]
522
523 #define default_function_type c_global_trees[CTI_DEFAULT_FUNCTION_TYPE]
524
525 #define function_name_decl_node c_global_trees[CTI_FUNCTION_NAME_DECL]
526 #define pretty_function_name_decl_node c_global_trees[CTI_PRETTY_FUNCTION_NAME_DECL]
527 #define c99_function_name_decl_node c_global_trees[CTI_C99_FUNCTION_NAME_DECL]
528 #define saved_function_name_decls c_global_trees[CTI_SAVED_FUNCTION_NAME_DECLS]
529
530 /* The node for C++ `__null'. */
531 #define null_node c_global_trees[CTI_NULL]
532
533 extern GTY(()) tree c_global_trees[CTI_MAX];
534
535 /* Mark which labels are explicitly declared.
536 These may be shadowed, and may be referenced from nested functions. */
537 #define C_DECLARED_LABEL_FLAG(label) TREE_LANG_FLAG_1 (label)
538
539 enum c_language_kind
540 {
541 clk_c = 0, /* C90, C94, C99, C11 or C2X */
542 clk_objc = 1, /* clk_c with ObjC features. */
543 clk_cxx = 2, /* ANSI/ISO C++ */
544 clk_objcxx = 3 /* clk_cxx with ObjC features. */
545 };
546
547 /* To test for a specific language use c_language, defined by each
548 front end. For "ObjC features" or "not C++" use the macros. */
549 extern c_language_kind c_language;
550
551 #define c_dialect_cxx() ((c_language & clk_cxx) != 0)
552 #define c_dialect_objc() ((c_language & clk_objc) != 0)
553
554 /* The various name of operator that appears in error messages. */
555 enum ref_operator {
556 /* NULL */
557 RO_NULL,
558 /* array indexing */
559 RO_ARRAY_INDEXING,
560 /* unary * */
561 RO_UNARY_STAR,
562 /* -> */
563 RO_ARROW,
564 /* implicit conversion */
565 RO_IMPLICIT_CONVERSION,
566 /* ->* */
567 RO_ARROW_STAR
568 };
569
570 /* Information about a statement tree. */
571
572 struct GTY(()) stmt_tree_s {
573 /* A stack of statement lists being collected. */
574 vec<tree, va_gc> *x_cur_stmt_list;
575
576 /* In C++, Nonzero if we should treat statements as full
577 expressions. In particular, this variable is non-zero if at the
578 end of a statement we should destroy any temporaries created
579 during that statement. Similarly, if, at the end of a block, we
580 should destroy any local variables in this block. Normally, this
581 variable is nonzero, since those are the normal semantics of
582 C++.
583
584 This flag has no effect in C. */
585 int stmts_are_full_exprs_p;
586 };
587
588 typedef struct stmt_tree_s *stmt_tree;
589
590 /* Global state pertinent to the current function. Some C dialects
591 extend this structure with additional fields. */
592
593 struct GTY(()) c_language_function {
594 /* While we are parsing the function, this contains information
595 about the statement-tree that we are building. */
596 struct stmt_tree_s x_stmt_tree;
597
598 /* Vector of locally defined typedefs, for
599 -Wunused-local-typedefs. */
600 vec<tree, va_gc> *local_typedefs;
601 };
602
603 #define stmt_list_stack (current_stmt_tree ()->x_cur_stmt_list)
604
605 /* When building a statement-tree, this is the current statement list
606 being collected. */
607 #define cur_stmt_list (stmt_list_stack->last ())
608
609 #define building_stmt_list_p() (stmt_list_stack && !stmt_list_stack->is_empty())
610
611 /* Language-specific hooks. */
612
613 /* If non-NULL, this function is called after a precompile header file
614 is loaded. */
615 extern void (*lang_post_pch_load) (void);
616
617 extern void push_file_scope (void);
618 extern void pop_file_scope (void);
619 extern stmt_tree current_stmt_tree (void);
620 extern tree push_stmt_list (void);
621 extern tree pop_stmt_list (tree);
622 extern tree add_stmt (tree);
623 extern void push_cleanup (tree, tree, bool);
624
625 extern tree build_modify_expr (location_t, tree, tree, enum tree_code,
626 location_t, tree, tree);
627 extern tree build_indirect_ref (location_t, tree, ref_operator);
628
629 extern bool has_c_linkage (const_tree decl);
630 extern bool c_decl_implicit (const_tree);
631
632 /* Switches common to the C front ends. */
633
634 /* Nonzero means don't output line number information. */
635
636 extern char flag_no_line_commands;
637
638 /* Nonzero causes -E output not to be done, but directives such as
639 #define that have side effects are still obeyed. */
640
641 extern char flag_no_output;
642
643 /* Nonzero means dump macros in some fashion; contains the 'D', 'M',
644 'N' or 'U' of the command line switch. */
645
646 extern char flag_dump_macros;
647
648 /* Nonzero means pass #include lines through to the output. */
649
650 extern char flag_dump_includes;
651
652 /* Nonzero means process PCH files while preprocessing. */
653
654 extern bool flag_pch_preprocess;
655
656 /* The file name to which we should write a precompiled header, or
657 NULL if no header will be written in this compile. */
658
659 extern const char *pch_file;
660
661 /* Nonzero if an ISO standard was selected. It rejects macros in the
662 user's namespace. */
663
664 extern int flag_iso;
665
666 /* C/ObjC language option variables. */
667
668
669 /* Nonzero means allow type mismatches in conditional expressions;
670 just make their values `void'. */
671
672 extern int flag_cond_mismatch;
673
674 /* Nonzero means enable C89 Amendment 1 features. */
675
676 extern int flag_isoc94;
677
678 /* Nonzero means use the ISO C99 (or later) dialect of C. */
679
680 extern int flag_isoc99;
681
682 /* Nonzero means use the ISO C11 (or later) dialect of C. */
683
684 extern int flag_isoc11;
685
686 /* Nonzero means use the ISO C2X dialect of C. */
687
688 extern int flag_isoc2x;
689
690 /* Nonzero means that we have builtin functions, and main is an int. */
691
692 extern int flag_hosted;
693
694 /* ObjC language option variables. */
695
696
697 /* Tells the compiler that this is a special run. Do not perform any
698 compiling, instead we are to test some platform dependent features
699 and output a C header file with appropriate definitions. */
700
701 extern int print_struct_values;
702
703 /* Tells the compiler what is the constant string class for ObjC. */
704
705 extern const char *constant_string_class_name;
706
707
708 /* C++ language option variables. */
709
710 /* The reference version of the ABI for -Wabi. */
711
712 extern int warn_abi_version;
713
714 /* Return TRUE if one of {flag_abi_version,flag_abi_compat_version} is
715 less than N and the other is at least N. */
716 #define abi_compat_version_crosses(N) \
717 (abi_version_at_least(N) \
718 != (flag_abi_compat_version == 0 \
719 || flag_abi_compat_version >= (N)))
720
721 /* Return TRUE if one of {flag_abi_version,warn_abi_version} is
722 less than N and the other is at least N, for use by -Wabi. */
723 #define abi_version_crosses(N) \
724 (abi_version_at_least(N) \
725 != (warn_abi_version == 0 \
726 || warn_abi_version >= (N)))
727
728 /* The supported C++ dialects. */
729
730 enum cxx_dialect {
731 cxx_unset,
732 /* C++98 with TC1 */
733 cxx98,
734 cxx03 = cxx98,
735 /* C++11 */
736 cxx0x,
737 cxx11 = cxx0x,
738 /* C++14 */
739 cxx14,
740 /* C++17 */
741 cxx17,
742 /* C++20 */
743 cxx20,
744 /* C++23 */
745 cxx23
746 };
747
748 /* The C++ dialect being used. C++98 is the default. */
749 extern enum cxx_dialect cxx_dialect;
750
751 /* Maximum template instantiation depth. This limit is rather
752 arbitrary, but it exists to limit the time it takes to notice
753 excessively recursive template instantiations. */
754
755 extern int max_tinst_depth;
756
757 /* Nonzero means that we should not issue warnings about problems that
758 occur when the code is executed, because the code being processed
759 is not expected to be executed. This is set during parsing. This
760 is used for cases like sizeof() and "0 ? a : b". This is a count,
761 not a bool, because unexecuted expressions can nest. */
762
763 extern int c_inhibit_evaluation_warnings;
764
765 /* Whether lexing has been completed, so subsequent preprocessor
766 errors should use the compiler's input_location. */
767
768 extern bool done_lexing;
769
770 /* C types are partitioned into three subsets: object, function, and
771 incomplete types. */
772 #define C_TYPE_OBJECT_P(type) \
773 (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type))
774
775 #define C_TYPE_INCOMPLETE_P(type) \
776 (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type) == 0)
777
778 #define C_TYPE_FUNCTION_P(type) \
779 (TREE_CODE (type) == FUNCTION_TYPE)
780
781 /* For convenience we define a single macro to identify the class of
782 object or incomplete types. */
783 #define C_TYPE_OBJECT_OR_INCOMPLETE_P(type) \
784 (!C_TYPE_FUNCTION_P (type))
785
786 /* Return true if TYPE is a vector type that should be subject to the GNU
787 vector extensions (as opposed to a vector type that is used only for
788 the purposes of defining target-specific built-in functions). */
789
790 inline bool
gnu_vector_type_p(const_tree type)791 gnu_vector_type_p (const_tree type)
792 {
793 return TREE_CODE (type) == VECTOR_TYPE && !TYPE_INDIVISIBLE_P (type);
794 }
795
796 struct visibility_flags
797 {
798 unsigned inpragma : 1; /* True when in #pragma GCC visibility. */
799 unsigned inlines_hidden : 1; /* True when -finlineshidden in effect. */
800 };
801
802 /* These enumerators are possible types of unsafe conversions. */
803 enum conversion_safety {
804 /* The conversion is safe. */
805 SAFE_CONVERSION = 0,
806 /* Another type of conversion with problems. */
807 UNSAFE_OTHER,
808 /* Conversion between signed and unsigned integers. */
809 UNSAFE_SIGN,
810 /* Conversions that reduce the precision of reals including conversions
811 from reals to integers. */
812 UNSAFE_REAL,
813 /* Conversions from complex to reals or integers, that discard imaginary
814 component. */
815 UNSAFE_IMAGINARY
816 };
817
818 /* Global visibility options. */
819 extern struct visibility_flags visibility_options;
820
821 /* Attribute table common to the C front ends. */
822 extern const struct attribute_spec c_common_attribute_table[];
823 extern const struct attribute_spec c_common_format_attribute_table[];
824
825 /* Pointer to function to lazily generate the VAR_DECL for __FUNCTION__ etc.
826 ID is the identifier to use, NAME is the string.
827 TYPE_DEP indicates whether it depends on type of the function or not
828 (i.e. __PRETTY_FUNCTION__). */
829
830 extern tree (*make_fname_decl) (location_t, tree, int);
831
832 /* In c-decl.cc and cp/tree.cc. FIXME. */
833 extern void c_register_addr_space (const char *str, addr_space_t as);
834
835 /* In c-common.cc. */
836 extern bool in_late_binary_op;
837 extern const char *c_addr_space_name (addr_space_t as);
838 extern tree identifier_global_value (tree);
839 extern tree identifier_global_tag (tree);
840 extern bool names_builtin_p (const char *);
841 extern tree c_linkage_bindings (tree);
842 extern void record_builtin_type (enum rid, const char *, tree);
843 extern tree build_void_list_node (void);
844 extern void start_fname_decls (void);
845 extern void finish_fname_decls (void);
846 extern const char *fname_as_string (int);
847 extern tree fname_decl (location_t, unsigned, tree);
848
849 extern int check_user_alignment (const_tree, bool, bool);
850 extern bool check_function_arguments (location_t loc, const_tree, const_tree,
851 int, tree *, vec<location_t> *);
852 extern void check_function_arguments_recurse (void (*)
853 (void *, tree,
854 unsigned HOST_WIDE_INT),
855 void *, tree,
856 unsigned HOST_WIDE_INT,
857 opt_code);
858 extern bool check_builtin_function_arguments (location_t, vec<location_t>,
859 tree, tree, int, tree *);
860 extern void check_function_format (const_tree, tree, int, tree *,
861 vec<location_t> *);
862 extern bool attribute_fallthrough_p (tree);
863 extern tree handle_format_attribute (tree *, tree, tree, int, bool *);
864 extern tree handle_format_arg_attribute (tree *, tree, tree, int, bool *);
865 extern bool c_common_handle_option (size_t, const char *, HOST_WIDE_INT, int,
866 location_t,
867 const struct cl_option_handlers *);
868 extern bool default_handle_c_option (size_t, const char *, int);
869 extern tree c_common_type_for_mode (machine_mode, int);
870 extern tree c_common_type_for_size (unsigned int, int);
871 extern tree c_common_fixed_point_type_for_size (unsigned int, unsigned int,
872 int, int);
873 extern tree c_common_unsigned_type (tree);
874 extern tree c_common_signed_type (tree);
875 extern tree c_common_signed_or_unsigned_type (int, tree);
876 extern void c_common_init_ts (void);
877 extern tree c_build_bitfield_integer_type (unsigned HOST_WIDE_INT, int);
878 extern enum conversion_safety unsafe_conversion_p (tree, tree, tree, bool);
879 extern bool decl_with_nonnull_addr_p (const_tree);
880 extern tree c_fully_fold (tree, bool, bool *, bool = false);
881 extern tree c_wrap_maybe_const (tree, bool);
882 extern tree c_common_truthvalue_conversion (location_t, tree);
883 extern void c_apply_type_quals_to_decl (int, tree);
884 extern tree c_sizeof_or_alignof_type (location_t, tree, bool, bool, int);
885 extern tree c_alignof_expr (location_t, tree);
886 /* Print an error message for invalid operands to arith operation CODE.
887 NOP_EXPR is used as a special case (see truthvalue_conversion). */
888 extern void binary_op_error (rich_location *, enum tree_code, tree, tree);
889 extern tree fix_string_type (tree);
890 extern tree convert_and_check (location_t, tree, tree, bool = false);
891 extern bool c_determine_visibility (tree);
892 extern bool vector_types_compatible_elements_p (tree, tree);
893 extern void mark_valid_location_for_stdc_pragma (bool);
894 extern bool valid_location_for_stdc_pragma_p (void);
895 extern void set_float_const_decimal64 (void);
896 extern void clear_float_const_decimal64 (void);
897 extern bool float_const_decimal64_p (void);
898
899 extern bool keyword_begins_type_specifier (enum rid);
900 extern bool keyword_is_storage_class_specifier (enum rid);
901 extern bool keyword_is_type_qualifier (enum rid);
902 extern bool keyword_is_decl_specifier (enum rid);
903 extern unsigned max_align_t_align (void);
904 extern bool cxx_fundamental_alignment_p (unsigned);
905 extern bool pointer_to_zero_sized_aggr_p (tree);
906 extern bool bool_promoted_to_int_p (tree);
907 extern tree fold_for_warn (tree);
908 extern tree c_common_get_narrower (tree, int *);
909 extern bool get_attribute_operand (tree, unsigned HOST_WIDE_INT *);
910 extern void c_common_finalize_early_debug (void);
911
912 /* Used by convert_and_check; in front ends. */
913 extern tree convert_init (tree, tree);
914
915 #define c_sizeof(LOC, T) c_sizeof_or_alignof_type (LOC, T, true, false, 1)
916 #define c_alignof(LOC, T) c_sizeof_or_alignof_type (LOC, T, false, false, 1)
917
918 /* Subroutine of build_binary_op, used for certain operations. */
919 extern tree shorten_binary_op (tree result_type, tree op0, tree op1, bool bitwise);
920
921 /* Subroutine of build_binary_op, used for comparison operations.
922 See if the operands have both been converted from subword integer types
923 and, if so, perhaps change them both back to their original type. */
924 extern tree shorten_compare (location_t, tree *, tree *, tree *,
925 enum tree_code *);
926
927 extern tree pointer_int_sum (location_t, enum tree_code, tree, tree,
928 bool = true);
929
930 /* Add qualifiers to a type, in the fashion for C. */
931 extern tree c_build_qualified_type (tree, int, tree = NULL_TREE, size_t = 0);
932
933 /* Build tree nodes and builtin functions common to both C and C++ language
934 frontends. */
935 extern void c_common_nodes_and_builtins (void);
936
937 extern void disable_builtin_function (const char *);
938
939 extern void set_compound_literal_name (tree decl);
940
941 extern tree build_va_arg (location_t, tree, tree);
942
943 extern const unsigned int c_family_lang_mask;
944 extern unsigned int c_common_option_lang_mask (void);
945 extern void c_common_diagnostics_set_defaults (diagnostic_context *);
946 extern bool c_common_complain_wrong_lang_p (const struct cl_option *);
947 extern void c_common_init_options_struct (struct gcc_options *);
948 extern void c_common_init_options (unsigned int, struct cl_decoded_option *);
949 extern bool c_common_post_options (const char **);
950 extern bool c_common_init (void);
951 extern void c_common_finish (void);
952 extern void c_common_parse_file (void);
953 extern FILE *get_dump_info (int, dump_flags_t *);
954 extern alias_set_type c_common_get_alias_set (tree);
955 extern void c_register_builtin_type (tree, const char*);
956 extern bool c_promoting_integer_type_p (const_tree);
957 extern bool self_promoting_args_p (const_tree);
958 extern tree strip_pointer_operator (tree);
959 extern tree strip_pointer_or_array_types (tree);
960 extern HOST_WIDE_INT c_common_to_target_charset (HOST_WIDE_INT);
961
962 /* This is the basic parsing function. */
963 extern void c_parse_file (void);
964
965 extern void c_parse_final_cleanups (void);
966
967 /* These macros provide convenient access to the various _STMT nodes. */
968
969 /* Nonzero if a given STATEMENT_LIST represents the outermost binding
970 if a statement expression. */
971 #define STATEMENT_LIST_STMT_EXPR(NODE) \
972 TREE_LANG_FLAG_1 (STATEMENT_LIST_CHECK (NODE))
973
974 /* Nonzero if a label has been added to the statement list. */
975 #define STATEMENT_LIST_HAS_LABEL(NODE) \
976 TREE_LANG_FLAG_3 (STATEMENT_LIST_CHECK (NODE))
977
978 /* C_MAYBE_CONST_EXPR accessors. */
979 #define C_MAYBE_CONST_EXPR_PRE(NODE) \
980 TREE_OPERAND (C_MAYBE_CONST_EXPR_CHECK (NODE), 0)
981 #define C_MAYBE_CONST_EXPR_EXPR(NODE) \
982 TREE_OPERAND (C_MAYBE_CONST_EXPR_CHECK (NODE), 1)
983 #define C_MAYBE_CONST_EXPR_INT_OPERANDS(NODE) \
984 TREE_LANG_FLAG_0 (C_MAYBE_CONST_EXPR_CHECK (NODE))
985 #define C_MAYBE_CONST_EXPR_NON_CONST(NODE) \
986 TREE_LANG_FLAG_1 (C_MAYBE_CONST_EXPR_CHECK (NODE))
987 #define EXPR_INT_CONST_OPERANDS(EXPR) \
988 (INTEGRAL_TYPE_P (TREE_TYPE (EXPR)) \
989 && (TREE_CODE (EXPR) == INTEGER_CST \
990 || (TREE_CODE (EXPR) == C_MAYBE_CONST_EXPR \
991 && C_MAYBE_CONST_EXPR_INT_OPERANDS (EXPR))))
992
993 /* In a FIELD_DECL, nonzero if the decl was originally a bitfield. */
994 #define DECL_C_BIT_FIELD(NODE) \
995 (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) == 1)
996 #define SET_DECL_C_BIT_FIELD(NODE) \
997 (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 1)
998 #define CLEAR_DECL_C_BIT_FIELD(NODE) \
999 (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 0)
1000
1001 /* True if the decl was an unnamed bitfield. */
1002 #define DECL_UNNAMED_BIT_FIELD(NODE) \
1003 (DECL_C_BIT_FIELD (NODE) && !DECL_NAME (NODE))
1004
1005 extern tree do_case (location_t, tree, tree);
1006 extern tree build_stmt (location_t, enum tree_code, ...);
1007 extern tree build_real_imag_expr (location_t, enum tree_code, tree);
1008
1009 /* These functions must be defined by each front-end which implements
1010 a variant of the C language. They are used in c-common.cc. */
1011
1012 extern tree build_unary_op (location_t, enum tree_code, tree, bool);
1013 extern tree build_binary_op (location_t, enum tree_code, tree, tree, bool);
1014 extern tree perform_integral_promotions (tree);
1015
1016 /* These functions must be defined by each front-end which implements
1017 a variant of the C language. They are used by port files. */
1018
1019 extern tree default_conversion (tree);
1020
1021 /* Given two integer or real types, return the type for their sum.
1022 Given two compatible ANSI C types, returns the merged type. */
1023
1024 extern tree common_type (tree, tree);
1025
1026 extern tree decl_constant_value (tree);
1027
1028 /* Handle increment and decrement of boolean types. */
1029 extern tree boolean_increment (enum tree_code, tree);
1030
1031 extern int case_compare (splay_tree_key, splay_tree_key);
1032
1033 extern tree c_add_case_label (location_t, splay_tree, tree, tree, tree);
1034 extern bool c_switch_covers_all_cases_p (splay_tree, tree);
1035 extern bool c_block_may_fallthru (const_tree);
1036
1037 extern tree build_function_call (location_t, tree, tree);
1038
1039 extern tree build_function_call_vec (location_t, vec<location_t>, tree,
1040 vec<tree, va_gc> *, vec<tree, va_gc> *,
1041 tree = NULL_TREE);
1042
1043 extern tree resolve_overloaded_builtin (location_t, tree, vec<tree, va_gc> *);
1044
1045 extern tree finish_label_address_expr (tree, location_t);
1046
1047 /* Same function prototype, but the C and C++ front ends have
1048 different implementations. Used in c-common.cc. */
1049 extern tree lookup_label (tree);
1050 extern tree lookup_name (tree);
1051 extern bool lvalue_p (const_tree);
1052 extern bool instantiation_dependent_expression_p (tree);
1053
1054 extern bool vector_targets_convertible_p (const_tree t1, const_tree t2);
1055 extern bool vector_types_convertible_p (const_tree t1, const_tree t2, bool emit_lax_note);
1056 extern tree c_build_vec_perm_expr (location_t, tree, tree, tree, bool = true);
1057 extern tree c_build_shufflevector (location_t, tree, tree,
1058 const vec<tree> &, bool = true);
1059 extern tree c_build_vec_convert (location_t, tree, location_t, tree, bool = true);
1060
1061 extern void init_c_lex (void);
1062
1063 extern void c_cpp_builtins (cpp_reader *);
1064 extern void c_cpp_builtins_optimize_pragma (cpp_reader *, tree, tree);
1065 extern bool c_cpp_diagnostic (cpp_reader *, enum cpp_diagnostic_level,
1066 enum cpp_warning_reason, rich_location *,
1067 const char *, va_list *)
1068 ATTRIBUTE_GCC_DIAG(5,0);
1069 extern int c_common_has_attribute (cpp_reader *, bool);
1070 extern int c_common_has_builtin (cpp_reader *);
1071
1072 extern bool parse_optimize_options (tree, bool);
1073
1074 /* Positive if an implicit `extern "C"' scope has just been entered;
1075 negative if such a scope has just been exited. */
1076 extern GTY(()) int pending_lang_change;
1077
1078 /* Information recorded about each file examined during compilation. */
1079
1080 struct c_fileinfo
1081 {
1082 int time; /* Time spent in the file. */
1083
1084 /* Flags used only by C++.
1085 INTERFACE_ONLY nonzero means that we are in an "interface" section
1086 of the compiler. INTERFACE_UNKNOWN nonzero means we cannot trust
1087 the value of INTERFACE_ONLY. If INTERFACE_UNKNOWN is zero and
1088 INTERFACE_ONLY is zero, it means that we are responsible for
1089 exporting definitions that others might need. */
1090 short interface_only;
1091 short interface_unknown;
1092 };
1093
1094 struct c_fileinfo *get_fileinfo (const char *);
1095 extern void dump_time_statistics (void);
1096
1097 extern bool c_dump_tree (void *, tree);
1098
1099 extern void verify_sequence_points (tree);
1100
1101 extern tree fold_offsetof (tree, tree = size_type_node,
1102 tree_code ctx = ERROR_MARK);
1103
1104 extern int complete_array_type (tree *, tree, bool);
1105 extern void complete_flexible_array_elts (tree);
1106
1107 extern tree builtin_type_for_size (int, bool);
1108
1109 extern void c_common_mark_addressable_vec (tree);
1110
1111 extern void set_underlying_type (tree);
1112 extern bool user_facing_original_type_p (const_tree);
1113 extern void record_types_used_by_current_var_decl (tree);
1114 extern vec<tree, va_gc> *make_tree_vector (void);
1115 extern void release_tree_vector (vec<tree, va_gc> *);
1116 extern vec<tree, va_gc> *make_tree_vector_single (tree);
1117 extern vec<tree, va_gc> *make_tree_vector_from_list (tree);
1118 extern vec<tree, va_gc> *make_tree_vector_from_ctor (tree);
1119 extern vec<tree, va_gc> *make_tree_vector_copy (const vec<tree, va_gc> *);
1120
1121 /* Used for communication between c_common_type_for_mode and
1122 c_register_builtin_type. */
1123 extern GTY(()) tree registered_builtin_types;
1124
1125 /* Read SOURCE_DATE_EPOCH from environment to have a deterministic
1126 timestamp to replace embedded current dates to get reproducible
1127 results. Returns -1 if SOURCE_DATE_EPOCH is not defined. */
1128 extern time_t cb_get_source_date_epoch (cpp_reader *pfile);
1129
1130 /* The value (as a unix timestamp) corresponds to date
1131 "Dec 31 9999 23:59:59 UTC", which is the latest date that __DATE__ and
1132 __TIME__ can store. */
1133 #define MAX_SOURCE_DATE_EPOCH HOST_WIDE_INT_C (253402300799)
1134
1135 /* Callback for libcpp for offering spelling suggestions for misspelled
1136 directives. */
1137 extern const char *cb_get_suggestion (cpp_reader *, const char *,
1138 const char *const *);
1139
1140 extern GTY(()) string_concat_db *g_string_concat_db;
1141
1142 class substring_loc;
1143 extern const char *c_get_substring_location (const substring_loc &substr_loc,
1144 location_t *out_loc);
1145
1146 /* In c-gimplify.cc. */
1147 typedef struct bc_state
1148 {
1149 tree bc_label[2];
1150 } bc_state_t;
1151 extern void save_bc_state (bc_state_t *);
1152 extern void restore_bc_state (bc_state_t *);
1153 extern tree c_genericize_control_stmt (tree *, int *, void *,
1154 walk_tree_fn, walk_tree_lh);
1155 extern void c_genericize (tree);
1156 extern int c_gimplify_expr (tree *, gimple_seq *, gimple_seq *);
1157 extern tree c_build_bind_expr (location_t, tree, tree);
1158
1159 /* In c-lex.cc. */
1160 extern enum cpp_ttype
1161 conflict_marker_get_final_tok_kind (enum cpp_ttype tok1_kind);
1162
1163 /* In c-pch.cc */
1164 extern void pch_init (void);
1165 extern void pch_cpp_save_state (void);
1166 extern int c_common_valid_pch (cpp_reader *pfile, const char *name, int fd);
1167 extern void c_common_read_pch (cpp_reader *pfile, const char *name, int fd,
1168 const char *orig);
1169 extern void c_common_write_pch (void);
1170 extern void c_common_no_more_pch (void);
1171 extern void c_common_pch_pragma (cpp_reader *pfile, const char *);
1172
1173 /* In *-checksum.c */
1174 extern const unsigned char executable_checksum[16];
1175
1176 /* In c-cppbuiltin.cc */
1177 extern void builtin_define_std (const char *macro);
1178 extern void builtin_define_with_value (const char *, const char *, int);
1179 extern void builtin_define_with_int_value (const char *, HOST_WIDE_INT);
1180 extern void builtin_define_type_sizeof (const char *, tree);
1181 extern void c_stddef_cpp_builtins (void);
1182 extern void fe_file_change (const line_map_ordinary *);
1183 extern void c_parse_error (const char *, enum cpp_ttype, tree, unsigned char,
1184 rich_location *richloc);
1185
1186 /* In c-ppoutput.cc */
1187 extern void init_pp_output (FILE *);
1188 extern void preprocess_file (cpp_reader *);
1189 extern void pp_file_change (const line_map_ordinary *);
1190 extern void pp_dir_change (cpp_reader *, const char *);
1191 extern bool check_missing_format_attribute (tree, tree);
1192
1193 /* In c-omp.cc */
1194 typedef wide_int_bitmask omp_clause_mask;
1195
1196 #define OMP_CLAUSE_MASK_1 omp_clause_mask (1)
1197
1198 enum c_omp_clause_split
1199 {
1200 C_OMP_CLAUSE_SPLIT_TARGET = 0,
1201 C_OMP_CLAUSE_SPLIT_TEAMS,
1202 C_OMP_CLAUSE_SPLIT_DISTRIBUTE,
1203 C_OMP_CLAUSE_SPLIT_PARALLEL,
1204 C_OMP_CLAUSE_SPLIT_FOR,
1205 C_OMP_CLAUSE_SPLIT_SIMD,
1206 C_OMP_CLAUSE_SPLIT_COUNT,
1207 C_OMP_CLAUSE_SPLIT_SECTIONS = C_OMP_CLAUSE_SPLIT_FOR,
1208 C_OMP_CLAUSE_SPLIT_TASKLOOP = C_OMP_CLAUSE_SPLIT_FOR,
1209 C_OMP_CLAUSE_SPLIT_LOOP = C_OMP_CLAUSE_SPLIT_FOR,
1210 C_OMP_CLAUSE_SPLIT_MASKED = C_OMP_CLAUSE_SPLIT_DISTRIBUTE
1211 };
1212
1213 enum c_omp_region_type
1214 {
1215 C_ORT_OMP = 1 << 0,
1216 C_ORT_ACC = 1 << 1,
1217 C_ORT_DECLARE_SIMD = 1 << 2,
1218 C_ORT_TARGET = 1 << 3,
1219 C_ORT_OMP_DECLARE_SIMD = C_ORT_OMP | C_ORT_DECLARE_SIMD,
1220 C_ORT_OMP_TARGET = C_ORT_OMP | C_ORT_TARGET
1221 };
1222
1223 extern tree c_finish_omp_master (location_t, tree);
1224 extern tree c_finish_omp_masked (location_t, tree, tree);
1225 extern tree c_finish_omp_taskgroup (location_t, tree, tree);
1226 extern tree c_finish_omp_critical (location_t, tree, tree, tree);
1227 extern tree c_finish_omp_ordered (location_t, tree, tree);
1228 extern void c_finish_omp_barrier (location_t);
1229 extern tree c_finish_omp_atomic (location_t, enum tree_code, enum tree_code,
1230 tree, tree, tree, tree, tree, tree, bool,
1231 enum omp_memory_order, bool, bool = false);
1232 extern bool c_omp_depend_t_p (tree);
1233 extern void c_finish_omp_depobj (location_t, tree, enum omp_clause_depend_kind,
1234 tree);
1235 extern void c_finish_omp_flush (location_t, int);
1236 extern void c_finish_omp_taskwait (location_t);
1237 extern void c_finish_omp_taskyield (location_t);
1238 extern tree c_finish_omp_for (location_t, enum tree_code, tree, tree, tree,
1239 tree, tree, tree, tree, bool);
1240 extern bool c_omp_check_loop_iv (tree, tree, walk_tree_lh);
1241 extern bool c_omp_check_loop_iv_exprs (location_t, enum tree_code, tree, int,
1242 tree, tree, tree, walk_tree_lh);
1243 extern tree c_finish_oacc_wait (location_t, tree, tree);
1244 extern tree c_oacc_split_loop_clauses (tree, tree *, bool);
1245 extern void c_omp_split_clauses (location_t, enum tree_code, omp_clause_mask,
1246 tree, tree *);
1247 extern tree c_omp_declare_simd_clauses_to_numbers (tree, tree);
1248 extern void c_omp_declare_simd_clauses_to_decls (tree, tree);
1249 extern bool c_omp_predefined_variable (tree);
1250 extern enum omp_clause_default_kind c_omp_predetermined_sharing (tree);
1251 extern enum omp_clause_defaultmap_kind c_omp_predetermined_mapping (tree);
1252 extern tree c_omp_check_context_selector (location_t, tree);
1253 extern void c_omp_mark_declare_variant (location_t, tree, tree);
1254 extern void c_omp_adjust_map_clauses (tree, bool);
1255
1256 enum c_omp_directive_kind {
1257 C_OMP_DIR_STANDALONE,
1258 C_OMP_DIR_CONSTRUCT,
1259 C_OMP_DIR_DECLARATIVE,
1260 C_OMP_DIR_UTILITY,
1261 C_OMP_DIR_INFORMATIONAL
1262 };
1263
1264 struct c_omp_directive {
1265 const char *first, *second, *third;
1266 unsigned int id;
1267 enum c_omp_directive_kind kind;
1268 bool simd;
1269 };
1270
1271 extern const struct c_omp_directive *c_omp_categorize_directive (const char *,
1272 const char *,
1273 const char *);
1274
1275 /* Return next tree in the chain for chain_next walking of tree nodes. */
1276 static inline tree
c_tree_chain_next(tree t)1277 c_tree_chain_next (tree t)
1278 {
1279 /* TREE_CHAIN of a type is TYPE_STUB_DECL, which is different
1280 kind of object, never a long chain of nodes. Prefer
1281 TYPE_NEXT_VARIANT for types. */
1282 if (CODE_CONTAINS_STRUCT (TREE_CODE (t), TS_TYPE_COMMON))
1283 return TYPE_NEXT_VARIANT (t);
1284 /* Otherwise, if there is TREE_CHAIN, return it. */
1285 if (CODE_CONTAINS_STRUCT (TREE_CODE (t), TS_COMMON))
1286 return TREE_CHAIN (t);
1287 return NULL;
1288 }
1289
1290 /* Mask used by tm_stmt_attr. */
1291 #define TM_STMT_ATTR_OUTER 2
1292 #define TM_STMT_ATTR_ATOMIC 4
1293 #define TM_STMT_ATTR_RELAXED 8
1294
1295 /* Mask used by tm_attr_to_mask and tm_mask_to_attr. Note that these
1296 are ordered specifically such that more restrictive attributes are
1297 at lower bit positions. This fact is known by the C++ tm attribute
1298 inheritance code such that least bit extraction (mask & -mask) results
1299 in the most restrictive attribute. */
1300 #define TM_ATTR_SAFE 1
1301 #define TM_ATTR_CALLABLE 2
1302 #define TM_ATTR_PURE 4
1303 #define TM_ATTR_IRREVOCABLE 8
1304 #define TM_ATTR_MAY_CANCEL_OUTER 16
1305
1306 /* A suffix-identifier value doublet that represents user-defined literals
1307 for C++-0x. */
1308 enum overflow_type {
1309 OT_UNDERFLOW = -1,
1310 OT_NONE,
1311 OT_OVERFLOW
1312 };
1313
1314 struct GTY(()) tree_userdef_literal {
1315 struct tree_base base;
1316 tree suffix_id;
1317 tree value;
1318 tree num_string;
1319 enum overflow_type overflow;
1320 };
1321
1322 #define USERDEF_LITERAL_SUFFIX_ID(NODE) \
1323 (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->suffix_id)
1324
1325 #define USERDEF_LITERAL_VALUE(NODE) \
1326 (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->value)
1327
1328 #define USERDEF_LITERAL_OVERFLOW(NODE) \
1329 (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->overflow)
1330
1331 #define USERDEF_LITERAL_NUM_STRING(NODE) \
1332 (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->num_string)
1333
1334 #define USERDEF_LITERAL_TYPE(NODE) \
1335 (TREE_TYPE (USERDEF_LITERAL_VALUE (NODE)))
1336
1337 extern tree build_userdef_literal (tree suffix_id, tree value,
1338 enum overflow_type overflow,
1339 tree num_string);
1340
1341
1342 /* WHILE_STMT accessors. These give access to the condition of the
1343 while statement and the body of the while statement, respectively. */
1344 #define WHILE_COND(NODE) TREE_OPERAND (WHILE_STMT_CHECK (NODE), 0)
1345 #define WHILE_BODY(NODE) TREE_OPERAND (WHILE_STMT_CHECK (NODE), 1)
1346
1347 /* DO_STMT accessors. These give access to the condition of the do
1348 statement and the body of the do statement, respectively. */
1349 #define DO_COND(NODE) TREE_OPERAND (DO_STMT_CHECK (NODE), 0)
1350 #define DO_BODY(NODE) TREE_OPERAND (DO_STMT_CHECK (NODE), 1)
1351
1352 /* FOR_STMT accessors. These give access to the init statement,
1353 condition, update expression, and body of the for statement,
1354 respectively. */
1355 #define FOR_INIT_STMT(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 0)
1356 #define FOR_COND(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 1)
1357 #define FOR_EXPR(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 2)
1358 #define FOR_BODY(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 3)
1359 #define FOR_SCOPE(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 4)
1360
1361 #define SWITCH_STMT_COND(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 0)
1362 #define SWITCH_STMT_BODY(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 1)
1363 #define SWITCH_STMT_TYPE(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 2)
1364 #define SWITCH_STMT_SCOPE(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 3)
1365 /* True if there are case labels for all possible values of switch cond, either
1366 because there is a default: case label or because the case label ranges cover
1367 all values. */
1368 #define SWITCH_STMT_ALL_CASES_P(NODE) \
1369 TREE_LANG_FLAG_0 (SWITCH_STMT_CHECK (NODE))
1370 /* True if the body of a switch stmt contains no BREAK_STMTs. */
1371 #define SWITCH_STMT_NO_BREAK_P(NODE) \
1372 TREE_LANG_FLAG_2 (SWITCH_STMT_CHECK (NODE))
1373
1374
1375 /* Nonzero if NODE is the target for genericization of 'break' stmts. */
1376 #define LABEL_DECL_BREAK(NODE) \
1377 DECL_LANG_FLAG_0 (LABEL_DECL_CHECK (NODE))
1378
1379 /* Nonzero if NODE is the target for genericization of 'continue' stmts. */
1380 #define LABEL_DECL_CONTINUE(NODE) \
1381 DECL_LANG_FLAG_1 (LABEL_DECL_CHECK (NODE))
1382
1383 extern bool convert_vector_to_array_for_subscript (location_t, tree *, tree);
1384
1385 /* Possibe cases of scalar_to_vector conversion. */
1386 enum stv_conv {
1387 stv_error, /* Error occurred. */
1388 stv_nothing, /* Nothing happened. */
1389 stv_firstarg, /* First argument must be expanded. */
1390 stv_secondarg /* Second argument must be expanded. */
1391 };
1392
1393 extern enum stv_conv scalar_to_vector (location_t loc, enum tree_code code,
1394 tree op0, tree op1, bool);
1395
1396 extern tree find_inv_trees (tree *, int *, void *);
1397 extern tree replace_inv_trees (tree *, int *, void *);
1398
1399 extern bool reject_gcc_builtin (const_tree, location_t = UNKNOWN_LOCATION);
1400 extern bool valid_array_size_p (location_t, const_tree, tree, bool = true);
1401 extern void invalid_array_size_error (location_t, cst_size_error,
1402 const_tree, const_tree);
1403
1404 /* In c-warn.cc. */
1405 extern void constant_expression_warning (tree);
1406 extern void constant_expression_error (tree);
1407 extern void overflow_warning (location_t, tree, tree = NULL_TREE);
1408 extern void warn_logical_operator (location_t, enum tree_code, tree,
1409 enum tree_code, tree, enum tree_code, tree);
1410 extern void warn_tautological_cmp (const op_location_t &, enum tree_code,
1411 tree, tree);
1412 extern void warn_logical_not_parentheses (location_t, enum tree_code, tree,
1413 tree);
1414 extern bool warn_if_unused_value (const_tree, location_t, bool = false);
1415 extern bool strict_aliasing_warning (location_t, tree, tree);
1416 extern void sizeof_pointer_memaccess_warning (location_t *, tree,
1417 vec<tree, va_gc> *, tree *,
1418 bool (*) (tree, tree));
1419 extern void check_main_parameter_types (tree decl);
1420 extern void warnings_for_convert_and_check (location_t, tree, tree, tree);
1421 extern void c_do_switch_warnings (splay_tree, location_t, tree, tree, bool);
1422 extern void warn_for_omitted_condop (location_t, tree);
1423 extern bool warn_for_restrict (unsigned, tree *, unsigned);
1424 extern void warn_for_address_or_pointer_of_packed_member (tree, tree);
1425 extern void warn_parm_array_mismatch (location_t, tree, tree);
1426 extern void maybe_warn_sizeof_array_div (location_t, tree, tree, tree, tree);
1427 extern void do_warn_array_compare (location_t, tree_code, tree, tree);
1428
1429 /* Places where an lvalue, or modifiable lvalue, may be required.
1430 Used to select diagnostic messages in lvalue_error and
1431 readonly_error. */
1432 enum lvalue_use {
1433 lv_assign,
1434 lv_increment,
1435 lv_decrement,
1436 lv_addressof,
1437 lv_asm
1438 };
1439
1440 extern void lvalue_error (location_t, enum lvalue_use);
1441 extern void invalid_indirection_error (location_t, tree, ref_operator);
1442 extern void readonly_error (location_t, tree, enum lvalue_use);
1443 extern void warn_array_subscript_with_type_char (location_t, tree);
1444 extern void warn_about_parentheses (location_t,
1445 enum tree_code,
1446 enum tree_code, tree,
1447 enum tree_code, tree);
1448 extern void warn_for_unused_label (tree label);
1449 extern void warn_for_div_by_zero (location_t, tree divisor);
1450 extern void warn_for_memset (location_t, tree, tree, int);
1451 extern void warn_for_sign_compare (location_t,
1452 tree orig_op0, tree orig_op1,
1453 tree op0, tree op1,
1454 tree result_type,
1455 enum tree_code resultcode);
1456 extern void do_warn_double_promotion (tree, tree, tree, const char *,
1457 location_t);
1458 extern void do_warn_unused_parameter (tree);
1459 extern void record_locally_defined_typedef (tree);
1460 extern void maybe_record_typedef_use (tree);
1461 extern void maybe_warn_unused_local_typedefs (void);
1462 extern void maybe_warn_bool_compare (location_t, enum tree_code, tree, tree);
1463 extern bool maybe_warn_shift_overflow (location_t, tree, tree);
1464 extern void warn_duplicated_cond_add_or_warn (location_t, tree, vec<tree> **);
1465 extern bool diagnose_mismatched_attributes (tree, tree);
1466 extern tree do_warn_duplicated_branches_r (tree *, int *, void *);
1467 extern void warn_for_multistatement_macros (location_t, location_t,
1468 location_t, enum rid);
1469
1470 /* In c-attribs.cc. */
1471 extern bool attribute_takes_identifier_p (const_tree);
1472 extern tree handle_deprecated_attribute (tree *, tree, tree, int, bool *);
1473 extern tree handle_unused_attribute (tree *, tree, tree, int, bool *);
1474 extern tree handle_fallthrough_attribute (tree *, tree, tree, int, bool *);
1475 extern int parse_tm_stmt_attr (tree, int);
1476 extern int tm_attr_to_mask (tree);
1477 extern tree tm_mask_to_attr (int);
1478 extern tree find_tm_attribute (tree);
1479 extern const struct attribute_spec::exclusions attr_cold_hot_exclusions[];
1480 extern const struct attribute_spec::exclusions attr_noreturn_exclusions[];
1481 extern tree handle_noreturn_attribute (tree *, tree, tree, int, bool *);
1482 extern bool has_attribute (location_t, tree, tree, tree (*)(tree));
1483 extern tree build_attr_access_from_parms (tree, bool);
1484
1485 /* In c-format.cc. */
1486 extern bool valid_format_string_type_p (tree);
1487
1488 /* A bitmap of flags to positional_argument. */
1489 enum posargflags {
1490 /* Consider positional attribute argument value zero valid. */
1491 POSARG_ZERO = 1,
1492 /* Consider positional attribute argument value valid if it refers
1493 to the ellipsis (i.e., beyond the last typed argument). */
1494 POSARG_ELLIPSIS = 2
1495 };
1496
1497 extern tree positional_argument (const_tree, const_tree, tree, tree_code,
1498 int = 0, int = posargflags ());
1499
1500 extern enum flt_eval_method
1501 excess_precision_mode_join (enum flt_eval_method, enum flt_eval_method);
1502
1503 extern int c_flt_eval_method (bool ts18661_p);
1504 extern void add_no_sanitize_value (tree node, unsigned int flags);
1505
1506 extern void maybe_add_include_fixit (rich_location *, const char *, bool);
1507 extern void maybe_suggest_missing_token_insertion (rich_location *richloc,
1508 enum cpp_ttype token_type,
1509 location_t prev_token_loc);
1510 extern tree braced_lists_to_strings (tree, tree);
1511
1512 #if CHECKING_P
1513 namespace selftest {
1514 /* Declarations for specific families of tests within c-family,
1515 by source file, in alphabetical order. */
1516 extern void c_diagnostic_cc_tests (void);
1517 extern void c_format_cc_tests (void);
1518 extern void c_indentation_cc_tests (void);
1519 extern void c_opt_problem_cc_tests (void);
1520 extern void c_pretty_print_cc_tests (void);
1521 extern void c_spellcheck_cc_tests (void);
1522
1523 /* The entrypoint for running all of the above tests. */
1524 extern void c_family_tests (void);
1525 } // namespace selftest
1526 #endif /* #if CHECKING_P */
1527
1528 #endif /* ! GCC_C_COMMON_H */
1529