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1 : /* Definitions for c-common.cc.
2 : Copyright (C) 1987-2026 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, RID_BITINT,
105 :
106 : /* C extensions */
107 : RID_ASM, RID_TYPEOF, RID_TYPEOF_UNQUAL, RID_ALIGNOF, RID_ATTRIBUTE,
108 : RID_COUNTOF, RID_MAXOF, RID_MINOF,
109 : RID_C23_VA_START, RID_VA_ARG,
110 : RID_EXTENSION, RID_IMAGPART, RID_REALPART, RID_LABEL, RID_CHOOSE_EXPR,
111 : RID_TYPES_COMPATIBLE_P, RID_BUILTIN_COMPLEX, RID_BUILTIN_SHUFFLE,
112 : RID_BUILTIN_SHUFFLEVECTOR, RID_BUILTIN_CONVERTVECTOR, RID_BUILTIN_TGMATH,
113 : RID_BUILTIN_HAS_ATTRIBUTE, RID_BUILTIN_ASSOC_BARRIER, RID_BUILTIN_STDC,
114 : RID_BUILTIN_COUNTED_BY_REF,
115 : RID_DFLOAT32, RID_DFLOAT64, RID_DFLOAT128, RID_DFLOAT64X,
116 :
117 : /* TS 18661-3 keywords, in the same sequence as the TI_* values. */
118 : RID_FLOAT16,
119 : RID_FLOATN_NX_FIRST = RID_FLOAT16,
120 : RID_FLOAT32,
121 : RID_FLOAT64,
122 : RID_FLOAT128,
123 : RID_FLOAT32X,
124 : RID_FLOAT64X,
125 : RID_FLOAT128X,
126 : #define CASE_RID_FLOATN_NX \
127 : case RID_FLOAT16: case RID_FLOAT32: case RID_FLOAT64: case RID_FLOAT128: \
128 : case RID_FLOAT32X: case RID_FLOAT64X: case RID_FLOAT128X
129 :
130 : RID_FRACT, RID_ACCUM, RID_AUTO_TYPE, RID_BUILTIN_CALL_WITH_STATIC_CHAIN,
131 :
132 : /* "__GIMPLE", for the GIMPLE-parsing extension to the C frontend. */
133 : RID_GIMPLE,
134 :
135 : /* "__PHI", for parsing PHI function in GIMPLE FE. */
136 : RID_PHI,
137 :
138 : /* "__RTL", for the RTL-parsing extension to the C frontend. */
139 : RID_RTL,
140 :
141 : /* C11 */
142 : RID_ALIGNAS, RID_GENERIC,
143 :
144 : /* This means to warn that this is a C++ keyword, and then treat it
145 : as a normal identifier. */
146 : RID_CXX_COMPAT_WARN,
147 :
148 : /* GNU transactional memory extension */
149 : RID_TRANSACTION_ATOMIC, RID_TRANSACTION_RELAXED, RID_TRANSACTION_CANCEL,
150 :
151 : /* Too many ways of getting the name of a function as a string */
152 : RID_FUNCTION_NAME, RID_PRETTY_FUNCTION_NAME, RID_C99_FUNCTION_NAME,
153 :
154 : /* C++ (some of these are keywords in Objective-C as well, but only
155 : if they appear after a '@') */
156 : RID_BOOL, RID_WCHAR, RID_CLASS,
157 : RID_PUBLIC, RID_PRIVATE, RID_PROTECTED,
158 : RID_TEMPLATE, RID_NULL, RID_CATCH,
159 : RID_DELETE, RID_FALSE, RID_NAMESPACE,
160 : RID_NEW, RID_OFFSETOF, RID_OPERATOR,
161 : RID_THIS, RID_THROW, RID_TRUE,
162 : RID_TRY, RID_TYPENAME, RID_TYPEID,
163 : RID_USING, RID_CHAR16, RID_CHAR32,
164 :
165 : /* casts */
166 : RID_CONSTCAST, RID_DYNCAST, RID_REINTCAST, RID_STATCAST,
167 :
168 : /* C++ extensions */
169 : RID_ADDRESSOF,
170 : RID_BUILTIN_LAUNDER,
171 : RID_BUILTIN_BIT_CAST,
172 : RID_BUILTIN_OPERATOR_NEW, RID_BUILTIN_OPERATOR_DELETE,
173 :
174 : /* C++11 */
175 : RID_CONSTEXPR, RID_DECLTYPE, RID_NOEXCEPT, RID_NULLPTR, RID_STATIC_ASSERT,
176 :
177 : /* C++20 */
178 : RID_CONSTINIT, RID_CONSTEVAL,
179 :
180 : /* char8_t */
181 : RID_CHAR8,
182 :
183 : /* C++ concepts */
184 : RID_CONCEPT, RID_REQUIRES,
185 :
186 : /* C++ modules. */
187 : RID__MODULE, RID__IMPORT, RID__EXPORT, /* Internal tokens. */
188 :
189 : /* C++ coroutines */
190 : RID_CO_AWAIT, RID_CO_YIELD, RID_CO_RETURN,
191 :
192 : /* C++26 */
193 : RID_CONTASSERT,
194 :
195 : /* C++ transactional memory. */
196 : RID_ATOMIC_NOEXCEPT, RID_ATOMIC_CANCEL, RID_SYNCHRONIZED,
197 :
198 : /* Objective-C ("AT" reserved words - they are only keywords when
199 : they follow '@') */
200 : RID_AT_ENCODE, RID_AT_END,
201 : RID_AT_CLASS, RID_AT_ALIAS, RID_AT_DEFS,
202 : RID_AT_PRIVATE, RID_AT_PROTECTED, RID_AT_PUBLIC, RID_AT_PACKAGE,
203 : RID_AT_PROTOCOL, RID_AT_SELECTOR,
204 : RID_AT_THROW, RID_AT_TRY, RID_AT_CATCH,
205 : RID_AT_FINALLY, RID_AT_SYNCHRONIZED,
206 : RID_AT_OPTIONAL, RID_AT_REQUIRED, RID_AT_PROPERTY,
207 : RID_AT_SYNTHESIZE, RID_AT_DYNAMIC,
208 : RID_AT_INTERFACE,
209 : RID_AT_IMPLEMENTATION,
210 :
211 : /* OpenMP */
212 : RID_OMP_ALL_MEMORY,
213 :
214 : /* Named address support, mapping the keyword to a particular named address
215 : number. Named address space 0 is reserved for the generic address. If
216 : there are more than 254 named addresses, the addr_space_t type will need
217 : to be grown from an unsigned char to unsigned short. */
218 : RID_ADDR_SPACE_0, /* generic address */
219 : RID_ADDR_SPACE_1,
220 : RID_ADDR_SPACE_2,
221 : RID_ADDR_SPACE_3,
222 : RID_ADDR_SPACE_4,
223 : RID_ADDR_SPACE_5,
224 : RID_ADDR_SPACE_6,
225 : RID_ADDR_SPACE_7,
226 : RID_ADDR_SPACE_8,
227 : RID_ADDR_SPACE_9,
228 : RID_ADDR_SPACE_10,
229 : RID_ADDR_SPACE_11,
230 : RID_ADDR_SPACE_12,
231 : RID_ADDR_SPACE_13,
232 : RID_ADDR_SPACE_14,
233 : RID_ADDR_SPACE_15,
234 :
235 : RID_FIRST_ADDR_SPACE = RID_ADDR_SPACE_0,
236 : RID_LAST_ADDR_SPACE = RID_ADDR_SPACE_15,
237 :
238 : /* __intN keywords. The _N_M here doesn't correspond to the intN
239 : in the keyword; use the bitsize in int_n_t_data_t[M] for that.
240 : For example, if int_n_t_data_t[0].bitsize is 13, then RID_INT_N_0
241 : is for __int13. */
242 :
243 : /* Note that the range to use is RID_FIRST_INT_N through
244 : RID_FIRST_INT_N + NUM_INT_N_ENTS - 1 and c-parser.cc has a list of
245 : all RID_INT_N_* in a case statement. */
246 :
247 : RID_INT_N_0,
248 : RID_INT_N_1,
249 : RID_INT_N_2,
250 : RID_INT_N_3,
251 :
252 : RID_FIRST_INT_N = RID_INT_N_0,
253 : RID_LAST_INT_N = RID_INT_N_3,
254 :
255 : RID_MAX,
256 :
257 : RID_FIRST_MODIFIER = RID_STATIC,
258 : RID_LAST_MODIFIER = RID_ONEWAY,
259 :
260 : RID_FIRST_CXX11 = RID_CONSTEXPR,
261 : RID_LAST_CXX11 = RID_STATIC_ASSERT,
262 : RID_FIRST_CXX20 = RID_CONSTINIT,
263 : RID_LAST_CXX20 = RID_CO_RETURN,
264 : RID_FIRST_CXX26 = RID_CONTASSERT,
265 : RID_LAST_CXX26 = RID_CONTASSERT,
266 : RID_FIRST_AT = RID_AT_ENCODE,
267 : RID_LAST_AT = RID_AT_IMPLEMENTATION,
268 : RID_FIRST_PQ = RID_IN,
269 : RID_LAST_PQ = RID_ONEWAY,
270 : RID_FIRST_PATTR = RID_GETTER,
271 : RID_LAST_PATTR = RID_NULL_RESETTABLE
272 : };
273 :
274 : #define OBJC_IS_AT_KEYWORD(rid) \
275 : ((unsigned int) (rid) >= (unsigned int) RID_FIRST_AT && \
276 : (unsigned int) (rid) <= (unsigned int) RID_LAST_AT)
277 :
278 : #define OBJC_IS_PQ_KEYWORD(rid) \
279 : ((unsigned int) (rid) >= (unsigned int) RID_FIRST_PQ && \
280 : (unsigned int) (rid) <= (unsigned int) RID_LAST_PQ)
281 :
282 : /* Keywords permitted in an @property attribute context. */
283 : #define OBJC_IS_PATTR_KEYWORD(rid) \
284 : ((((unsigned int) (rid) >= (unsigned int) RID_FIRST_PATTR && \
285 : (unsigned int) (rid) <= (unsigned int) RID_LAST_PATTR)) \
286 : || rid == RID_CLASS)
287 :
288 : /* OBJC_IS_CXX_KEYWORD recognizes the 'CXX_OBJC' keywords (such as
289 : 'class') which are shared in a subtle way between Objective-C and
290 : C++. When the lexer is lexing in Objective-C/Objective-C++, if it
291 : finds '@' followed by one of these identifiers (eg, '@class'), it
292 : recognizes the whole as an Objective-C keyword. If the identifier
293 : is found elsewhere, it follows the rules of the C/C++ language.
294 : */
295 : #define OBJC_IS_CXX_KEYWORD(rid) \
296 : (rid == RID_CLASS || rid == RID_SYNCHRONIZED \
297 : || rid == RID_PUBLIC || rid == RID_PROTECTED || rid == RID_PRIVATE \
298 : || rid == RID_TRY || rid == RID_THROW || rid == RID_CATCH)
299 :
300 : /* The elements of `ridpointers' are identifier nodes for the reserved
301 : type names and storage classes. It is indexed by a RID_... value. */
302 : extern GTY ((length ("(int) RID_MAX"))) tree *ridpointers;
303 :
304 : /* Standard named or nameless data types of the C compiler. */
305 :
306 : enum c_tree_index
307 : {
308 : CTI_CHAR8_TYPE,
309 : CTI_CHAR16_TYPE,
310 : CTI_CHAR32_TYPE,
311 : CTI_WCHAR_TYPE,
312 : CTI_UNDERLYING_WCHAR_TYPE,
313 : CTI_WINT_TYPE,
314 : CTI_SIGNED_SIZE_TYPE, /* For format checking only. */
315 : CTI_UNSIGNED_PTRDIFF_TYPE, /* For format checking only. */
316 : CTI_INTMAX_TYPE,
317 : CTI_UINTMAX_TYPE,
318 : CTI_WIDEST_INT_LIT_TYPE,
319 : CTI_WIDEST_UINT_LIT_TYPE,
320 :
321 : /* Types for <stdint.h>, that may not be defined on all
322 : targets. */
323 : CTI_SIG_ATOMIC_TYPE,
324 : CTI_INT8_TYPE,
325 : CTI_INT16_TYPE,
326 : CTI_INT32_TYPE,
327 : CTI_INT64_TYPE,
328 : CTI_UINT8_TYPE,
329 : CTI_UINT16_TYPE,
330 : CTI_UINT32_TYPE,
331 : CTI_UINT64_TYPE,
332 : CTI_INT_LEAST8_TYPE,
333 : CTI_INT_LEAST16_TYPE,
334 : CTI_INT_LEAST32_TYPE,
335 : CTI_INT_LEAST64_TYPE,
336 : CTI_UINT_LEAST8_TYPE,
337 : CTI_UINT_LEAST16_TYPE,
338 : CTI_UINT_LEAST32_TYPE,
339 : CTI_UINT_LEAST64_TYPE,
340 : CTI_INT_FAST8_TYPE,
341 : CTI_INT_FAST16_TYPE,
342 : CTI_INT_FAST32_TYPE,
343 : CTI_INT_FAST64_TYPE,
344 : CTI_UINT_FAST8_TYPE,
345 : CTI_UINT_FAST16_TYPE,
346 : CTI_UINT_FAST32_TYPE,
347 : CTI_UINT_FAST64_TYPE,
348 : CTI_INTPTR_TYPE,
349 : CTI_UINTPTR_TYPE,
350 :
351 : CTI_CHAR_ARRAY_TYPE,
352 : CTI_CHAR8_ARRAY_TYPE,
353 : CTI_CHAR16_ARRAY_TYPE,
354 : CTI_CHAR32_ARRAY_TYPE,
355 : CTI_WCHAR_ARRAY_TYPE,
356 : CTI_STRING_TYPE,
357 : CTI_CONST_STRING_TYPE,
358 :
359 : /* Type for boolean expressions (bool in C++, int in C). */
360 : CTI_TRUTHVALUE_TYPE,
361 : CTI_TRUTHVALUE_TRUE,
362 : CTI_TRUTHVALUE_FALSE,
363 :
364 : CTI_DEFAULT_FUNCTION_TYPE,
365 :
366 : CTI_NULL,
367 : CTI_NULLPTR,
368 : CTI_NULLPTR_TYPE,
369 :
370 : /* These are not types, but we have to look them up all the time. */
371 : CTI_FUNCTION_NAME_DECL,
372 : CTI_PRETTY_FUNCTION_NAME_DECL,
373 : CTI_C99_FUNCTION_NAME_DECL,
374 :
375 : CTI_MODULE_HWM,
376 : /* Below here entities change during compilation. */
377 :
378 : CTI_SAVED_FUNCTION_NAME_DECLS,
379 :
380 : CTI_MAX
381 : };
382 :
383 : #define C_CPP_HASHNODE(id) \
384 : (&(((struct c_common_identifier *) (id))->node))
385 : #define C_RID_CODE(id) \
386 : ((enum rid) (((struct c_common_identifier *) (id))->node.rid_code))
387 : #define C_SET_RID_CODE(id, code) \
388 : (((struct c_common_identifier *) (id))->node.rid_code = (unsigned char) code)
389 :
390 : /* Identifier part common to the C front ends. Inherits from
391 : tree_identifier, despite appearances. */
392 : struct GTY(()) c_common_identifier {
393 : struct tree_common common;
394 : struct cpp_hashnode node;
395 : };
396 :
397 : /* An entry in the reserved keyword table. */
398 :
399 : struct c_common_resword
400 : {
401 : const char *const word;
402 : ENUM_BITFIELD(rid) const rid : 16;
403 : const unsigned int disable : 32;
404 : };
405 :
406 : /* Mode used to build pointers (VOIDmode means ptr_mode). */
407 :
408 : extern machine_mode c_default_pointer_mode;
409 :
410 : /* Extra cpp_ttype values for C++. */
411 :
412 : /* A token type for template-ids. If a template-id is processed while
413 : parsing tentatively, it is replaced with a CPP_TEMPLATE_ID token;
414 : the value of the CPP_TEMPLATE_ID is whatever was returned by
415 : cp_parser_template_id. */
416 : #define CPP_TEMPLATE_ID ((enum cpp_ttype) (CPP_KEYWORD + 1))
417 :
418 : /* A token type for nested-name-specifiers. If a
419 : nested-name-specifier is processed while parsing tentatively, it is
420 : replaced with a CPP_NESTED_NAME_SPECIFIER token; the value of the
421 : CPP_NESTED_NAME_SPECIFIER is whatever was returned by
422 : cp_parser_nested_name_specifier_opt. */
423 : #define CPP_NESTED_NAME_SPECIFIER ((enum cpp_ttype) (CPP_TEMPLATE_ID + 1))
424 :
425 : /* A token type for pre-parsed C++0x decltype. */
426 : #define CPP_DECLTYPE ((enum cpp_ttype) (CPP_NESTED_NAME_SPECIFIER + 1))
427 :
428 : /* A token type for pre-parsed primary-expression (lambda- or statement-). */
429 : #define CPP_PREPARSED_EXPR ((enum cpp_ttype) (CPP_DECLTYPE + 1))
430 :
431 : /* The number of token types, including C++-specific ones. */
432 : #define N_CP_TTYPES ((int) (CPP_PREPARSED_EXPR + 1))
433 :
434 : /* Disable mask. Keywords are disabled if (reswords[i].disable &
435 : mask) is _true_. Thus for keywords which are present in all
436 : languages the disable field is zero. */
437 :
438 : #define D_CONLY 0x0001 /* C only (not in C++). */
439 : #define D_CXXONLY 0x0002 /* C++ only (not in C). */
440 : #define D_C99 0x0004 /* In C, C99 only. */
441 : #define D_C23 0x0008 /* In C, C23 only. */
442 : #define D_CXX11 0x0010 /* In C++, C++11 only. */
443 : #define D_EXT 0x0020 /* GCC extension. */
444 : #define D_EXT89 0x0040 /* GCC extension incorporated in C99. */
445 : #define D_EXT11 0x0080 /* GCC extension incorporated in C23. */
446 : #define D_ASM 0x0100 /* Disabled by -fno-asm. */
447 : #define D_OBJC 0x0200 /* In Objective C and neither C nor C++. */
448 : #define D_CXX_OBJC 0x0400 /* In Objective C, and C++, but not C. */
449 : #define D_CXXWARN 0x0800 /* In C warn with -Wcxx-compat. */
450 : #define D_CXX_CONCEPTS 0x1000 /* In C++, only with concepts. */
451 : #define D_TRANSMEM 0x2000 /* C++ transactional memory TS. */
452 : #define D_CXX_CHAR8_T 0x4000 /* In C++, only with -fchar8_t. */
453 : #define D_CXX20 0x8000 /* In C++, C++20 only. */
454 : #define D_CXX_COROUTINES 0x10000 /* In C++, only with coroutines. */
455 : #define D_CXX_MODULES 0x20000 /* In C++, only with modules. */
456 : #define D_CXX26 0x40000 /* In C++, C++26 only. */
457 :
458 : #define D_CXX_CONCEPTS_FLAGS D_CXXONLY | D_CXX_CONCEPTS
459 : #define D_CXX_CHAR8_T_FLAGS D_CXXONLY | D_CXX_CHAR8_T
460 : #define D_CXX_MODULES_FLAGS (D_CXXONLY | D_CXX_MODULES)
461 : #define D_CXX_COROUTINES_FLAGS (D_CXXONLY | D_CXX_COROUTINES)
462 :
463 : /* The reserved keyword table. */
464 : extern const struct c_common_resword c_common_reswords[];
465 :
466 : /* The number of items in the reserved keyword table. */
467 : extern const unsigned int num_c_common_reswords;
468 :
469 : #define char8_type_node c_global_trees[CTI_CHAR8_TYPE]
470 : #define char16_type_node c_global_trees[CTI_CHAR16_TYPE]
471 : #define char32_type_node c_global_trees[CTI_CHAR32_TYPE]
472 : #define wchar_type_node c_global_trees[CTI_WCHAR_TYPE]
473 : #define underlying_wchar_type_node c_global_trees[CTI_UNDERLYING_WCHAR_TYPE]
474 : #define wint_type_node c_global_trees[CTI_WINT_TYPE]
475 : #define signed_size_type_node c_global_trees[CTI_SIGNED_SIZE_TYPE]
476 : #define unsigned_ptrdiff_type_node c_global_trees[CTI_UNSIGNED_PTRDIFF_TYPE]
477 : #define intmax_type_node c_global_trees[CTI_INTMAX_TYPE]
478 : #define uintmax_type_node c_global_trees[CTI_UINTMAX_TYPE]
479 : #define widest_integer_literal_type_node c_global_trees[CTI_WIDEST_INT_LIT_TYPE]
480 : #define widest_unsigned_literal_type_node c_global_trees[CTI_WIDEST_UINT_LIT_TYPE]
481 :
482 : #define sig_atomic_type_node c_global_trees[CTI_SIG_ATOMIC_TYPE]
483 : #define int8_type_node c_global_trees[CTI_INT8_TYPE]
484 : #define int16_type_node c_global_trees[CTI_INT16_TYPE]
485 : #define int32_type_node c_global_trees[CTI_INT32_TYPE]
486 : #define int64_type_node c_global_trees[CTI_INT64_TYPE]
487 : #define uint8_type_node c_global_trees[CTI_UINT8_TYPE]
488 : #define c_uint16_type_node c_global_trees[CTI_UINT16_TYPE]
489 : #define c_uint32_type_node c_global_trees[CTI_UINT32_TYPE]
490 : #define c_uint64_type_node c_global_trees[CTI_UINT64_TYPE]
491 : #define int_least8_type_node c_global_trees[CTI_INT_LEAST8_TYPE]
492 : #define int_least16_type_node c_global_trees[CTI_INT_LEAST16_TYPE]
493 : #define int_least32_type_node c_global_trees[CTI_INT_LEAST32_TYPE]
494 : #define int_least64_type_node c_global_trees[CTI_INT_LEAST64_TYPE]
495 : #define uint_least8_type_node c_global_trees[CTI_UINT_LEAST8_TYPE]
496 : #define uint_least16_type_node c_global_trees[CTI_UINT_LEAST16_TYPE]
497 : #define uint_least32_type_node c_global_trees[CTI_UINT_LEAST32_TYPE]
498 : #define uint_least64_type_node c_global_trees[CTI_UINT_LEAST64_TYPE]
499 : #define int_fast8_type_node c_global_trees[CTI_INT_FAST8_TYPE]
500 : #define int_fast16_type_node c_global_trees[CTI_INT_FAST16_TYPE]
501 : #define int_fast32_type_node c_global_trees[CTI_INT_FAST32_TYPE]
502 : #define int_fast64_type_node c_global_trees[CTI_INT_FAST64_TYPE]
503 : #define uint_fast8_type_node c_global_trees[CTI_UINT_FAST8_TYPE]
504 : #define uint_fast16_type_node c_global_trees[CTI_UINT_FAST16_TYPE]
505 : #define uint_fast32_type_node c_global_trees[CTI_UINT_FAST32_TYPE]
506 : #define uint_fast64_type_node c_global_trees[CTI_UINT_FAST64_TYPE]
507 : #define intptr_type_node c_global_trees[CTI_INTPTR_TYPE]
508 : #define uintptr_type_node c_global_trees[CTI_UINTPTR_TYPE]
509 :
510 : #define truthvalue_type_node c_global_trees[CTI_TRUTHVALUE_TYPE]
511 : #define truthvalue_true_node c_global_trees[CTI_TRUTHVALUE_TRUE]
512 : #define truthvalue_false_node c_global_trees[CTI_TRUTHVALUE_FALSE]
513 :
514 : #define char_array_type_node c_global_trees[CTI_CHAR_ARRAY_TYPE]
515 : #define char8_array_type_node c_global_trees[CTI_CHAR8_ARRAY_TYPE]
516 : #define char16_array_type_node c_global_trees[CTI_CHAR16_ARRAY_TYPE]
517 : #define char32_array_type_node c_global_trees[CTI_CHAR32_ARRAY_TYPE]
518 : #define wchar_array_type_node c_global_trees[CTI_WCHAR_ARRAY_TYPE]
519 : #define string_type_node c_global_trees[CTI_STRING_TYPE]
520 : #define const_string_type_node c_global_trees[CTI_CONST_STRING_TYPE]
521 :
522 : #define default_function_type c_global_trees[CTI_DEFAULT_FUNCTION_TYPE]
523 :
524 : #define function_name_decl_node c_global_trees[CTI_FUNCTION_NAME_DECL]
525 : #define pretty_function_name_decl_node c_global_trees[CTI_PRETTY_FUNCTION_NAME_DECL]
526 : #define c99_function_name_decl_node c_global_trees[CTI_C99_FUNCTION_NAME_DECL]
527 : #define saved_function_name_decls c_global_trees[CTI_SAVED_FUNCTION_NAME_DECLS]
528 :
529 : /* The node for C++ `__null'. */
530 : #define null_node c_global_trees[CTI_NULL]
531 : /* The nodes for `nullptr'. */
532 : #define nullptr_node c_global_trees[CTI_NULLPTR]
533 : #define nullptr_type_node c_global_trees[CTI_NULLPTR_TYPE]
534 :
535 : extern GTY(()) tree c_global_trees[CTI_MAX];
536 :
537 : /* Mark which labels are explicitly declared.
538 : These may be shadowed, and may be referenced from nested functions. */
539 : #define C_DECLARED_LABEL_FLAG(label) TREE_LANG_FLAG_1 (label)
540 :
541 : enum c_language_kind
542 : {
543 : clk_c = 0, /* C without ObjC features. */
544 : clk_objc = 1, /* clk_c with ObjC features. */
545 : clk_cxx = 2, /* ANSI/ISO C++ */
546 : clk_objcxx = 3 /* clk_cxx with ObjC features. */
547 : };
548 :
549 : /* To test for a specific language use c_language, defined by each
550 : front end. For "ObjC features" or "not C++" use the macros. */
551 : extern c_language_kind c_language;
552 :
553 : #define c_dialect_cxx() ((c_language & clk_cxx) != 0)
554 : #define c_dialect_objc() ((c_language & clk_objc) != 0)
555 :
556 : /* The various name of operator that appears in error messages. */
557 : enum ref_operator {
558 : /* NULL */
559 : RO_NULL,
560 : /* array indexing */
561 : RO_ARRAY_INDEXING,
562 : /* unary * */
563 : RO_UNARY_STAR,
564 : /* -> */
565 : RO_ARROW,
566 : /* implicit conversion */
567 : RO_IMPLICIT_CONVERSION,
568 : /* ->* */
569 : RO_ARROW_STAR
570 : };
571 :
572 : /* Information about a statement tree. */
573 :
574 : struct GTY(()) stmt_tree_s {
575 : /* A stack of statement lists being collected. */
576 : vec<tree, va_gc> *x_cur_stmt_list;
577 :
578 : /* In C++, Nonzero if we should treat statements as full
579 : expressions. In particular, this variable is non-zero if at the
580 : end of a statement we should destroy any temporaries created
581 : during that statement. Similarly, if, at the end of a block, we
582 : should destroy any local variables in this block. Normally, this
583 : variable is nonzero, since those are the normal semantics of
584 : C++.
585 :
586 : This flag has no effect in C. */
587 : int stmts_are_full_exprs_p;
588 : };
589 :
590 : typedef struct stmt_tree_s *stmt_tree;
591 :
592 : /* Global state pertinent to the current function. Some C dialects
593 : extend this structure with additional fields. */
594 :
595 : struct GTY(()) c_language_function {
596 : /* While we are parsing the function, this contains information
597 : about the statement-tree that we are building. */
598 : struct stmt_tree_s x_stmt_tree;
599 :
600 : /* Vector of locally defined typedefs, for
601 : -Wunused-local-typedefs. */
602 : vec<tree, va_gc> *local_typedefs;
603 : };
604 :
605 : #define stmt_list_stack (current_stmt_tree ()->x_cur_stmt_list)
606 :
607 : /* When building a statement-tree, this is the current statement list
608 : being collected. */
609 : #define cur_stmt_list (stmt_list_stack->last ())
610 :
611 : #define building_stmt_list_p() (stmt_list_stack && !stmt_list_stack->is_empty())
612 :
613 : /* Language-specific hooks. */
614 :
615 : /* If non-NULL, this function is called after a precompile header file
616 : is loaded. */
617 : extern void (*lang_post_pch_load) (void);
618 :
619 : extern void push_file_scope (void);
620 : extern void pop_file_scope (void);
621 : extern stmt_tree current_stmt_tree (void);
622 : extern tree push_stmt_list (void);
623 : extern tree pop_stmt_list (tree);
624 : extern tree add_stmt (tree);
625 : extern void push_cleanup (tree, tree, bool);
626 :
627 : extern tree build_modify_expr (location_t, tree, tree, enum tree_code,
628 : location_t, tree, tree);
629 : extern tree build_indirect_ref (location_t, tree, ref_operator);
630 :
631 : extern bool has_c_linkage (const_tree decl);
632 : extern bool c_decl_implicit (const_tree);
633 :
634 : /* Switches common to the C front ends. */
635 :
636 : /* Nonzero means don't output line number information. */
637 :
638 : extern char flag_no_line_commands;
639 :
640 : /* Nonzero causes -E output not to be done, but directives such as
641 : #define that have side effects are still obeyed. */
642 :
643 : extern char flag_no_output;
644 :
645 : /* Nonzero means dump macros in some fashion; contains the 'D', 'M',
646 : 'N' or 'U' of the command line switch. */
647 :
648 : extern char flag_dump_macros;
649 :
650 : /* Nonzero means pass #include lines through to the output. */
651 :
652 : extern char flag_dump_includes;
653 :
654 : /* Nonzero means process PCH files while preprocessing. */
655 :
656 : extern bool flag_pch_preprocess;
657 :
658 : /* The file name to which we should write a precompiled header, or
659 : NULL if no header will be written in this compile. */
660 :
661 : extern const char *pch_file;
662 :
663 : /* Nonzero if an ISO standard was selected. It rejects macros in the
664 : user's namespace. */
665 :
666 : extern int flag_iso;
667 :
668 : /* C/ObjC language option variables. */
669 :
670 :
671 : /* Nonzero means allow type mismatches in conditional expressions;
672 : just make their values `void'. */
673 :
674 : extern int flag_cond_mismatch;
675 :
676 : /* Nonzero means enable C89 Amendment 1 features. */
677 :
678 : extern int flag_isoc94;
679 :
680 : /* Nonzero means use the ISO C99 (or later) dialect of C. */
681 :
682 : extern int flag_isoc99;
683 :
684 : /* Nonzero means use the ISO C11 (or later) dialect of C. */
685 :
686 : extern int flag_isoc11;
687 :
688 : /* Nonzero means use the ISO C23 (or later) dialect of C. */
689 :
690 : extern int flag_isoc23;
691 :
692 : /* Nonzero means use the ISO C2Y (or later) dialect of C. */
693 :
694 : extern int flag_isoc2y;
695 :
696 : /* Nonzero means that we have builtin functions, and main is an int. */
697 :
698 : extern int flag_hosted;
699 :
700 : /* ObjC language option variables. */
701 :
702 :
703 : /* Tells the compiler that this is a special run. Do not perform any
704 : compiling, instead we are to test some platform dependent features
705 : and output a C header file with appropriate definitions. */
706 :
707 : extern int print_struct_values;
708 :
709 : /* Tells the compiler what is the constant string class for ObjC. */
710 :
711 : extern const char *constant_string_class_name;
712 :
713 :
714 : /* C++ language option variables. */
715 :
716 : /* The reference version of the ABI for -Wabi. */
717 :
718 : extern int warn_abi_version;
719 :
720 : /* Return TRUE if one of {flag_abi_version,flag_abi_compat_version} is
721 : less than N and the other is at least N. */
722 : #define abi_compat_version_crosses(N) \
723 : (abi_version_at_least(N) \
724 : != (flag_abi_compat_version == 0 \
725 : || flag_abi_compat_version >= (N)))
726 :
727 : /* Return TRUE if one of {flag_abi_version,warn_abi_version} is
728 : less than N and the other is at least N, for use by -Wabi. */
729 : #define abi_version_crosses(N) \
730 : (abi_version_at_least(N) \
731 : != (warn_abi_version == 0 \
732 : || warn_abi_version >= (N)))
733 :
734 : /* The supported C++ dialects. */
735 :
736 : enum cxx_dialect {
737 : cxx_unset,
738 : /* C++98 with TC1 */
739 : cxx98,
740 : cxx03 = cxx98,
741 : /* C++11 */
742 : cxx0x,
743 : cxx11 = cxx0x,
744 : /* C++14 */
745 : cxx14,
746 : /* C++17 */
747 : cxx17,
748 : /* C++20 */
749 : cxx20,
750 : /* C++23 */
751 : cxx23,
752 : /* C++26 */
753 : cxx26
754 : };
755 :
756 : /* The C++ dialect being used. C++20 is the default. */
757 : extern enum cxx_dialect cxx_dialect;
758 :
759 : /* Maximum template instantiation depth. This limit is rather
760 : arbitrary, but it exists to limit the time it takes to notice
761 : excessively recursive template instantiations. */
762 :
763 : extern int max_tinst_depth;
764 :
765 : /* Nonzero means that we should not issue warnings about problems that
766 : occur when the code is executed, because the code being processed
767 : is not expected to be executed. This is set during parsing. This
768 : is used for cases like sizeof() and "0 ? a : b". This is a count,
769 : not a bool, because unexecuted expressions can nest. */
770 :
771 : extern int c_inhibit_evaluation_warnings;
772 :
773 : /* Depending on which phase of processing we are in, we may need
774 : to prefer input_location to libcpp's locations. (Specifically,
775 : after the C++ lexer is done lexing tokens, but prior to calling
776 : cpp_finish (), we need to do so. */
777 :
778 : extern bool override_libcpp_locations;
779 :
780 : /* C types are partitioned into three subsets: object, function, and
781 : incomplete types. */
782 : #define C_TYPE_OBJECT_P(type) \
783 : (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type))
784 :
785 : #define C_TYPE_INCOMPLETE_P(type) \
786 : (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type) == 0)
787 :
788 : #define C_TYPE_FUNCTION_P(type) \
789 : (TREE_CODE (type) == FUNCTION_TYPE)
790 :
791 : /* For convenience we define a single macro to identify the class of
792 : object or incomplete types. */
793 : #define C_TYPE_OBJECT_OR_INCOMPLETE_P(type) \
794 : (!C_TYPE_FUNCTION_P (type))
795 :
796 : /* Return true if TYPE is a vector type that should be subject to the GNU
797 : vector extensions (as opposed to a vector type that is used only for
798 : the purposes of defining target-specific built-in functions). */
799 :
800 : inline bool
801 772238256 : gnu_vector_type_p (const_tree type)
802 : {
803 772238256 : return VECTOR_TYPE_P (type) && !TYPE_INDIVISIBLE_P (type);
804 : }
805 :
806 : struct visibility_flags
807 : {
808 : unsigned inpragma : 1; /* True when in #pragma GCC visibility. */
809 : unsigned inlines_hidden : 1; /* True when -finlineshidden in effect. */
810 : };
811 :
812 : /* These enumerators are possible types of unsafe conversions. */
813 : enum conversion_safety {
814 : /* The conversion is safe. */
815 : SAFE_CONVERSION = 0,
816 : /* Another type of conversion with problems. */
817 : UNSAFE_OTHER,
818 : /* Conversion between signed and unsigned integers. */
819 : UNSAFE_SIGN,
820 : /* Conversions that reduce the precision of reals including conversions
821 : from reals to integers. */
822 : UNSAFE_REAL,
823 : /* Conversions from complex to reals or integers, that discard imaginary
824 : component. */
825 : UNSAFE_IMAGINARY
826 : };
827 :
828 : /* Global visibility options. */
829 : extern struct visibility_flags visibility_options;
830 :
831 : /* Attribute table common to the C front ends. */
832 : extern const struct scoped_attribute_specs c_common_gnu_attribute_table;
833 : extern const struct scoped_attribute_specs c_common_clang_attribute_table;
834 : extern const struct scoped_attribute_specs c_common_format_attribute_table;
835 :
836 : /* Pointer to function to lazily generate the VAR_DECL for __FUNCTION__ etc.
837 : ID is the identifier to use, NAME is the string.
838 : TYPE_DEP indicates whether it depends on type of the function or not
839 : (i.e. __PRETTY_FUNCTION__). */
840 :
841 : extern tree (*make_fname_decl) (location_t, tree, int);
842 :
843 : /* In c-decl.cc and cp/tree.cc. FIXME. */
844 : extern void c_register_addr_space (const char *str, addr_space_t as);
845 :
846 : /* In c-common.cc. */
847 : extern bool in_late_binary_op;
848 : extern const char *c_addr_space_name (addr_space_t as);
849 : extern tree identifier_global_value (tree);
850 : extern tree identifier_global_tag (tree);
851 : extern int names_builtin_p (const char *);
852 : extern tree c_linkage_bindings (tree);
853 : extern void record_builtin_type (enum rid, const char *, tree);
854 : extern void start_fname_decls (void);
855 : extern void finish_fname_decls (void);
856 : extern const char *fname_as_string (int);
857 : extern tree fname_decl (location_t, unsigned, tree);
858 :
859 : extern int check_user_alignment (const_tree, bool, bool);
860 : extern bool check_function_arguments (location_t loc, const_tree, const_tree,
861 : int, tree *, vec<location_t> *,
862 : bool (*comp_types) (tree, tree));
863 : extern void check_function_arguments_recurse (void (*)
864 : (void *, tree,
865 : unsigned HOST_WIDE_INT),
866 : void *, tree,
867 : unsigned HOST_WIDE_INT,
868 : opt_code);
869 : extern bool check_builtin_function_arguments (location_t, vec<location_t>, tree,
870 : tree, int, tree *, bool = true);
871 : extern void check_function_format (const_tree, tree, int, tree *,
872 : vec<location_t> *,
873 : bool (*comp_types) (tree, tree));
874 : extern bool attribute_fallthrough_p (tree);
875 : extern tree handle_format_attribute (tree *, tree, tree, int, bool *);
876 : extern tree handle_format_arg_attribute (tree *, tree, tree, int, bool *);
877 : extern tree handle_unsequenced_attribute (tree *, tree, tree, int, bool *);
878 : extern tree handle_reproducible_attribute (tree *, tree, tree, int, bool *);
879 : extern bool c_common_handle_option (size_t, const char *, HOST_WIDE_INT, int,
880 : location_t,
881 : const struct cl_option_handlers *);
882 : extern bool default_handle_c_option (size_t, const char *, int);
883 : extern tree c_common_type_for_mode (machine_mode, int);
884 : extern tree c_common_type_for_size (unsigned int, int);
885 : extern tree c_common_fixed_point_type_for_size (unsigned int, unsigned int,
886 : int, int);
887 : extern tree c_common_unsigned_type (tree);
888 : extern tree c_common_signed_type (tree);
889 : extern tree c_common_signed_or_unsigned_type (int, tree);
890 : extern void c_common_init_ts (void);
891 : extern tree c_build_bitfield_integer_type (unsigned HOST_WIDE_INT, int);
892 : extern enum conversion_safety unsafe_conversion_p (tree, tree, tree, bool);
893 : extern bool decl_with_nonnull_addr_p (const_tree);
894 : extern tree c_fully_fold (tree, bool, bool *, bool = false);
895 : extern tree c_wrap_maybe_const (tree, bool);
896 : extern tree c_common_truthvalue_conversion (location_t, tree);
897 : extern void c_apply_type_quals_to_decl (int, tree);
898 : extern tree c_sizeof_or_alignof_type (location_t, tree, bool, bool, int);
899 : extern tree c_alignof_expr (location_t, tree);
900 : extern tree c_countof_type (location_t, tree);
901 : extern tree c_maxof_type (location_t, tree);
902 : extern tree c_minof_type (location_t, tree);
903 : /* Print an error message for invalid operands to arith operation CODE.
904 : NOP_EXPR is used as a special case (see truthvalue_conversion). */
905 : extern void binary_op_error (rich_location *, enum tree_code, tree, tree);
906 : extern tree fix_string_type (tree);
907 : extern tree convert_and_check (location_t, tree, tree, bool = false);
908 : extern bool c_determine_visibility (tree);
909 : extern bool vector_types_compatible_elements_p (tree, tree);
910 : extern void mark_valid_location_for_stdc_pragma (bool);
911 : extern bool valid_location_for_stdc_pragma_p (void);
912 : extern void set_float_const_decimal64 (void);
913 : extern void clear_float_const_decimal64 (void);
914 : extern bool float_const_decimal64_p (void);
915 :
916 : extern bool keyword_begins_type_specifier (enum rid);
917 : extern bool keyword_is_storage_class_specifier (enum rid);
918 : extern bool keyword_is_type_qualifier (enum rid);
919 : extern bool keyword_is_decl_specifier (enum rid);
920 : extern unsigned max_align_t_align (void);
921 : extern bool cxx_fundamental_alignment_p (unsigned);
922 : extern bool pointer_to_zero_sized_aggr_p (tree);
923 : extern bool bool_promoted_to_int_p (tree);
924 : extern tree fold_for_warn (tree);
925 : extern tree c_common_get_narrower (tree, int *);
926 : extern bool get_attribute_operand (tree, unsigned HOST_WIDE_INT *);
927 : extern void c_common_finalize_early_debug (void);
928 : extern bool c_flexible_array_member_type_p (const_tree);
929 : extern unsigned int c_strict_flex_array_level_of (tree);
930 : extern bool c_option_is_from_cpp_diagnostics (int);
931 : extern tree c_hardbool_type_attr_1 (tree, tree *, tree *);
932 :
933 : /* Used by convert_and_check; in front ends. */
934 : extern tree convert_init (tree, tree);
935 :
936 : #define c_sizeof(LOC, T) c_sizeof_or_alignof_type (LOC, T, true, false, 1)
937 : #define c_alignof(LOC, T) c_sizeof_or_alignof_type (LOC, T, false, false, 1)
938 :
939 : /* Subroutine of build_binary_op, used for certain operations. */
940 : extern tree shorten_binary_op (tree result_type, tree op0, tree op1, bool bitwise);
941 :
942 : /* Return true if division or modulo op0 / op1 or op0 % op1 may be shortened.
943 : We can shorten only if we can guarantee that op0 is not signed integral
944 : minimum or op1 is not -1, because e.g. (long long) INT_MIN / -1 is
945 : well defined INT_MAX + 1LL if long long is wider than int, but INT_MIN / -1
946 : is UB. */
947 : inline bool
948 8445133 : may_shorten_divmod (tree op0, tree op1)
949 : {
950 8445133 : tree type0 = TREE_TYPE (op0);
951 8445133 : if (TYPE_UNSIGNED (type0))
952 : return true;
953 : /* A cast from narrower unsigned won't be signed integral minimum,
954 : but cast from same or wider precision unsigned could be. */
955 5471017 : if (TREE_CODE (op0) == NOP_EXPR
956 1628465 : && INTEGRAL_TYPE_P (TREE_TYPE (TREE_OPERAND (op0, 0)))
957 1628460 : && TYPE_UNSIGNED (TREE_TYPE (TREE_OPERAND (op0, 0)))
958 5474285 : && (TYPE_PRECISION (TREE_TYPE (TREE_OPERAND (op0, 0)))
959 3268 : < TYPE_PRECISION (type0)))
960 : return true;
961 5468348 : if (TREE_CODE (op1) == INTEGER_CST && !integer_all_onesp (op1))
962 : return true;
963 : return false;
964 : }
965 :
966 : /* Subroutine of build_binary_op, used for comparison operations.
967 : See if the operands have both been converted from subword integer types
968 : and, if so, perhaps change them both back to their original type. */
969 : extern tree shorten_compare (location_t, tree *, tree *, tree *,
970 : enum tree_code *);
971 :
972 : extern tree pointer_int_sum (location_t, enum tree_code, tree, tree,
973 : bool = true);
974 :
975 : /* Add qualifiers to a type, in the fashion for C. */
976 : extern tree c_build_qualified_type (tree, int, tree = NULL_TREE, size_t = 0);
977 :
978 : /* Build tree nodes and builtin functions common to both C and C++ language
979 : frontends. */
980 : extern void c_common_nodes_and_builtins (void);
981 :
982 : extern void disable_builtin_function (const char *);
983 :
984 : extern void set_compound_literal_name (tree decl);
985 :
986 : extern tree build_va_arg (location_t, tree, tree);
987 :
988 : extern const unsigned int c_family_lang_mask;
989 : extern unsigned int c_common_option_lang_mask (void);
990 : extern void c_common_diagnostics_set_defaults (diagnostics::context *);
991 : extern bool c_common_complain_wrong_lang_p (const struct cl_option *);
992 : extern void c_common_init_options_struct (struct gcc_options *);
993 : extern void c_common_init_options (unsigned int, struct cl_decoded_option *);
994 : extern bool c_common_post_options (const char **);
995 : extern bool c_common_init (void);
996 : extern void c_common_finish (void);
997 : extern void c_common_parse_file (void);
998 : extern alias_set_type c_common_get_alias_set (tree);
999 : extern void c_register_builtin_type (tree, const char*);
1000 : extern bool c_promoting_integer_type_p (const_tree);
1001 : extern bool self_promoting_args_p (const_tree);
1002 : extern tree strip_pointer_operator (tree);
1003 : extern tree strip_pointer_or_array_types (tree);
1004 : extern HOST_WIDE_INT c_common_to_target_charset (HOST_WIDE_INT);
1005 :
1006 : /* This is the basic parsing function. */
1007 : extern void c_parse_file (void);
1008 :
1009 : extern void c_parse_final_cleanups (void);
1010 :
1011 : /* This initializes for preprocess-only mode. */
1012 : extern void c_init_preprocess (void);
1013 :
1014 : /* These macros provide convenient access to the various _STMT nodes. */
1015 :
1016 : /* Nonzero if a given STATEMENT_LIST represents the outermost binding
1017 : if a statement expression. */
1018 : #define STATEMENT_LIST_STMT_EXPR(NODE) \
1019 : TREE_LANG_FLAG_1 (STATEMENT_LIST_CHECK (NODE))
1020 :
1021 : /* Nonzero if a label has been added to the statement list. */
1022 : #define STATEMENT_LIST_HAS_LABEL(NODE) \
1023 : TREE_LANG_FLAG_3 (STATEMENT_LIST_CHECK (NODE))
1024 :
1025 : /* C_MAYBE_CONST_EXPR accessors. */
1026 : #define C_MAYBE_CONST_EXPR_PRE(NODE) \
1027 : TREE_OPERAND (C_MAYBE_CONST_EXPR_CHECK (NODE), 0)
1028 : #define C_MAYBE_CONST_EXPR_EXPR(NODE) \
1029 : TREE_OPERAND (C_MAYBE_CONST_EXPR_CHECK (NODE), 1)
1030 : #define C_MAYBE_CONST_EXPR_INT_OPERANDS(NODE) \
1031 : TREE_LANG_FLAG_0 (C_MAYBE_CONST_EXPR_CHECK (NODE))
1032 : #define C_MAYBE_CONST_EXPR_NON_CONST(NODE) \
1033 : TREE_LANG_FLAG_1 (C_MAYBE_CONST_EXPR_CHECK (NODE))
1034 : #define EXPR_INT_CONST_OPERANDS(EXPR) \
1035 : (INTEGRAL_TYPE_P (TREE_TYPE (EXPR)) \
1036 : && (TREE_CODE (EXPR) == INTEGER_CST \
1037 : || (TREE_CODE (EXPR) == C_MAYBE_CONST_EXPR \
1038 : && C_MAYBE_CONST_EXPR_INT_OPERANDS (EXPR))))
1039 :
1040 : /* In a FIELD_DECL, nonzero if the decl was originally a bitfield. */
1041 : #define DECL_C_BIT_FIELD(NODE) \
1042 : (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) == 1)
1043 : #define SET_DECL_C_BIT_FIELD(NODE) \
1044 : (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 1)
1045 : #define CLEAR_DECL_C_BIT_FIELD(NODE) \
1046 : (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 0)
1047 :
1048 : /* True if the decl was an unnamed bitfield. */
1049 : #define DECL_UNNAMED_BIT_FIELD(NODE) \
1050 : (DECL_C_BIT_FIELD (NODE) && !DECL_NAME (NODE))
1051 :
1052 : /* True iff TYPE is cv decltype(nullptr). */
1053 : #define NULLPTR_TYPE_P(TYPE) (TREE_CODE (TYPE) == NULLPTR_TYPE)
1054 :
1055 : /* Returns the underlying type of the given enumeration type. The
1056 : underlying type is determined in different ways, depending on the
1057 : properties of the enum:
1058 :
1059 : - In C++0x or C23, the underlying type can be explicitly specified, e.g.,
1060 :
1061 : enum E1 : char { ... } // underlying type is char
1062 :
1063 : - In a C++0x scoped enumeration, the underlying type is int
1064 : unless otherwises specified:
1065 :
1066 : enum class E2 { ... } // underlying type is int
1067 :
1068 : - Otherwise, the underlying type is determined based on the
1069 : values of the enumerators. In this case, the
1070 : ENUM_UNDERLYING_TYPE will not be set until after the definition
1071 : of the enumeration is completed by finish_enum. */
1072 : #define ENUM_UNDERLYING_TYPE(TYPE) \
1073 : TREE_TYPE (ENUMERAL_TYPE_CHECK (TYPE))
1074 :
1075 : /* Determines whether an ENUMERAL_TYPE has an explicit
1076 : underlying type. */
1077 : #define ENUM_FIXED_UNDERLYING_TYPE_P(NODE) (TYPE_LANG_FLAG_5 (NODE))
1078 :
1079 : extern tree do_case (location_t, tree, tree, tree);
1080 : extern tree build_stmt (location_t, enum tree_code, ...);
1081 : extern tree build_real_imag_expr (location_t, enum tree_code, tree);
1082 :
1083 : /* These functions must be defined by each front-end which implements
1084 : a variant of the C language. They are used in c-common.cc. */
1085 :
1086 : extern tree build_unary_op (location_t, enum tree_code, tree, bool);
1087 : extern tree build_binary_op (location_t, enum tree_code, tree, tree, bool);
1088 : extern tree perform_integral_promotions (tree);
1089 :
1090 : /* These functions must be defined by each front-end which implements
1091 : a variant of the C language. They are used by port files. */
1092 :
1093 : extern tree default_conversion (tree);
1094 :
1095 : /* Given two integer or real types, return the type for their sum.
1096 : Given two compatible ANSI C types, returns the merged type. */
1097 :
1098 : extern tree common_type (tree, tree);
1099 :
1100 : extern tree decl_constant_value (tree);
1101 :
1102 : /* Handle increment and decrement of boolean types. */
1103 : extern tree boolean_increment (enum tree_code, tree);
1104 :
1105 : extern int case_compare (splay_tree_key, splay_tree_key);
1106 :
1107 : extern tree c_add_case_label (location_t, splay_tree, tree, tree, tree,
1108 : tree = NULL_TREE);
1109 : extern bool c_switch_covers_all_cases_p (splay_tree, tree);
1110 : extern bool c_block_may_fallthru (const_tree);
1111 :
1112 : extern tree build_function_call (location_t, tree, tree);
1113 :
1114 : extern tree build_function_call_vec (location_t, vec<location_t>, tree,
1115 : vec<tree, va_gc> *, vec<tree, va_gc> *,
1116 : tree = NULL_TREE);
1117 :
1118 : extern tree resolve_overloaded_builtin (location_t, tree, vec<tree, va_gc> *,
1119 : bool = true);
1120 :
1121 : extern tree finish_label_address_expr (tree, location_t);
1122 :
1123 : /* Same function prototype, but the C and C++ front ends have
1124 : different implementations. Used in c-common.cc. */
1125 : extern tree lookup_label (tree);
1126 : extern tree lookup_name (tree);
1127 : extern bool lvalue_p (const_tree);
1128 : extern int maybe_adjust_arg_pos_for_attribute (const_tree);
1129 : extern bool instantiation_dependent_expression_p (tree);
1130 :
1131 : extern bool vector_targets_convertible_p (const_tree t1, const_tree t2);
1132 : extern bool vector_types_convertible_p (const_tree t1, const_tree t2, bool emit_lax_note);
1133 : extern tree c_build_vec_perm_expr (location_t, tree, tree, tree, bool = true);
1134 : extern tree c_build_shufflevector (location_t, tree, tree,
1135 : const vec<tree> &, bool = true);
1136 : extern tree c_build_vec_convert (location_t, tree, location_t, tree, bool = true);
1137 :
1138 : extern void init_c_lex (void);
1139 :
1140 : extern void c_cpp_builtins (cpp_reader *);
1141 : extern void c_cpp_builtins_optimize_pragma (cpp_reader *, tree, tree);
1142 : extern bool c_cpp_diagnostic (cpp_reader *, enum cpp_diagnostic_level,
1143 : enum cpp_warning_reason, rich_location *,
1144 : const char *, va_list *)
1145 : ATTRIBUTE_GCC_DIAG(5,0);
1146 : extern int c_common_has_attribute (cpp_reader *, bool);
1147 : extern int c_common_has_builtin (cpp_reader *);
1148 : extern int c_common_has_feature (cpp_reader *, bool);
1149 :
1150 : /* Implemented by each front end in *-lang.cc. */
1151 : extern void c_family_register_lang_features ();
1152 :
1153 : /* Implemented in c-family/c-common.cc. */
1154 : extern void c_common_register_feature (const char *, bool);
1155 : extern bool has_feature_p (const char *, bool);
1156 :
1157 : extern bool parse_optimize_options (tree, bool);
1158 :
1159 : /* Positive if an implicit `extern "C"' scope has just been entered;
1160 : negative if such a scope has just been exited. */
1161 : extern GTY(()) int pending_lang_change;
1162 :
1163 : /* Information recorded about each file examined during compilation. */
1164 :
1165 : struct c_fileinfo
1166 : {
1167 : int time; /* Time spent in the file. */
1168 :
1169 : /* Flags used only by C++.
1170 : INTERFACE_ONLY nonzero means that we are in an "interface" section
1171 : of the compiler. INTERFACE_UNKNOWN nonzero means we cannot trust
1172 : the value of INTERFACE_ONLY. If INTERFACE_UNKNOWN is zero and
1173 : INTERFACE_ONLY is zero, it means that we are responsible for
1174 : exporting definitions that others might need. */
1175 : short interface_only;
1176 : short interface_unknown;
1177 : };
1178 :
1179 : struct c_fileinfo *get_fileinfo (const char *);
1180 : extern void dump_time_statistics (void);
1181 :
1182 : extern bool c_dump_tree (void *, tree);
1183 :
1184 : extern void verify_sequence_points (tree);
1185 :
1186 : extern tree fold_offsetof (tree, tree = size_type_node,
1187 : tree_code ctx = ERROR_MARK);
1188 :
1189 : extern int complete_array_type (tree *, tree, bool);
1190 : extern void complete_flexible_array_elts (tree);
1191 :
1192 : extern tree builtin_type_for_size (int, bool);
1193 :
1194 : extern void c_common_mark_addressable_vec (tree);
1195 :
1196 : extern void set_underlying_type (tree);
1197 : extern bool user_facing_original_type_p (const_tree);
1198 : extern void record_types_used_by_current_var_decl (tree);
1199 : extern vec<tree, va_gc> *make_tree_vector (void);
1200 : extern void release_tree_vector (vec<tree, va_gc> *);
1201 : extern vec<tree, va_gc> *make_tree_vector_single (tree);
1202 : extern vec<tree, va_gc> *make_tree_vector_from_list (tree);
1203 : extern vec<tree, va_gc> *append_ctor_to_tree_vector (vec<tree, va_gc> *,
1204 : tree);
1205 : extern vec<tree, va_gc> *make_tree_vector_from_ctor (tree);
1206 : extern vec<tree, va_gc> *make_tree_vector_copy (const vec<tree, va_gc> *);
1207 :
1208 : /* Used for communication between c_common_type_for_mode and
1209 : c_register_builtin_type. */
1210 : extern GTY(()) tree registered_builtin_types;
1211 :
1212 : /* Read SOURCE_DATE_EPOCH from environment to have a deterministic
1213 : timestamp to replace embedded current dates to get reproducible
1214 : results. Returns -1 if SOURCE_DATE_EPOCH is not defined. */
1215 : extern time_t cb_get_source_date_epoch (cpp_reader *pfile);
1216 :
1217 : /* The value (as a unix timestamp) corresponds to date
1218 : "Dec 31 9999 23:59:59 UTC", which is the latest date that __DATE__ and
1219 : __TIME__ can store. */
1220 : #define MAX_SOURCE_DATE_EPOCH HOST_WIDE_INT_C (253402300799)
1221 :
1222 : /* Callback for libcpp for offering spelling suggestions for misspelled
1223 : directives. */
1224 : extern const char *cb_get_suggestion (cpp_reader *, const char *,
1225 : const char *const *);
1226 :
1227 : extern GTY(()) string_concat_db *g_string_concat_db;
1228 :
1229 : class substring_loc;
1230 : extern const char *c_get_substring_location (const substring_loc &substr_loc,
1231 : location_t *out_loc);
1232 :
1233 : /* In c-gimplify.cc. */
1234 : typedef hash_map<tree, tree_pair,
1235 : simple_hashmap_traits<tree_decl_hash,
1236 : tree_pair>> bc_hash_map_t;
1237 : typedef struct bc_state
1238 : {
1239 : tree bc_label[2];
1240 : bc_hash_map_t *bc_hash_map;
1241 : } bc_state_t;
1242 : extern void save_bc_state (bc_state_t *);
1243 : extern void restore_bc_state (bc_state_t *);
1244 : extern tree c_genericize_control_stmt (tree *, int *, void *,
1245 : walk_tree_fn, walk_tree_lh);
1246 : extern void c_genericize (tree);
1247 : extern int c_gimplify_expr (tree *, gimple_seq *, gimple_seq *);
1248 : extern tree c_build_bind_expr (location_t, tree, tree);
1249 :
1250 : /* In c-lex.cc. */
1251 : extern enum cpp_ttype
1252 : conflict_marker_get_final_tok_kind (enum cpp_ttype tok1_kind);
1253 :
1254 : /* In c-pch.cc */
1255 : extern void pch_init (void);
1256 : extern void pch_cpp_save_state (void);
1257 : extern int c_common_valid_pch (cpp_reader *pfile, const char *name, int fd);
1258 : extern void c_common_read_pch (cpp_reader *pfile, const char *name, int fd,
1259 : const char *orig);
1260 : extern void c_common_write_pch (void);
1261 : extern void c_common_no_more_pch (void);
1262 : extern void c_common_pch_pragma (cpp_reader *pfile, const char *);
1263 :
1264 : /* In *-checksum.c */
1265 : extern const unsigned char executable_checksum[16];
1266 :
1267 : /* In c-cppbuiltin.cc */
1268 : extern void builtin_define_std (const char *macro);
1269 : extern void builtin_define_with_value (const char *, const char *, int);
1270 : extern void builtin_define_with_int_value (const char *, HOST_WIDE_INT);
1271 : extern void builtin_define_type_sizeof (const char *, tree);
1272 : extern void c_stddef_cpp_builtins (void);
1273 : extern void fe_file_change (const line_map_ordinary *);
1274 : extern void c_parse_error (const char *, enum cpp_ttype, tree, unsigned char,
1275 : rich_location *richloc);
1276 : extern diagnostics::option_id get_option_for_builtin_define (const char *macro_name);
1277 :
1278 : /* In c-ppoutput.cc */
1279 : extern void init_pp_output (FILE *);
1280 : extern void preprocess_file (cpp_reader *);
1281 : extern void pp_file_change (const line_map_ordinary *);
1282 : extern void pp_dir_change (cpp_reader *, const char *);
1283 : extern bool check_missing_format_attribute (tree, tree);
1284 : extern void c_pp_stream_token (cpp_reader *, const cpp_token *, location_t loc);
1285 :
1286 : /* In c-omp.cc */
1287 : typedef wide_int_bitmask omp_clause_mask;
1288 :
1289 : #define OMP_CLAUSE_MASK_1 omp_clause_mask (1)
1290 :
1291 : enum c_omp_clause_split
1292 : {
1293 : C_OMP_CLAUSE_SPLIT_TARGET = 0,
1294 : C_OMP_CLAUSE_SPLIT_TEAMS,
1295 : C_OMP_CLAUSE_SPLIT_DISTRIBUTE,
1296 : C_OMP_CLAUSE_SPLIT_PARALLEL,
1297 : C_OMP_CLAUSE_SPLIT_FOR,
1298 : C_OMP_CLAUSE_SPLIT_SIMD,
1299 : C_OMP_CLAUSE_SPLIT_COUNT,
1300 : C_OMP_CLAUSE_SPLIT_SECTIONS = C_OMP_CLAUSE_SPLIT_FOR,
1301 : C_OMP_CLAUSE_SPLIT_TASKLOOP = C_OMP_CLAUSE_SPLIT_FOR,
1302 : C_OMP_CLAUSE_SPLIT_LOOP = C_OMP_CLAUSE_SPLIT_FOR,
1303 : C_OMP_CLAUSE_SPLIT_MASKED = C_OMP_CLAUSE_SPLIT_DISTRIBUTE
1304 : };
1305 :
1306 : enum c_omp_region_type
1307 : {
1308 : C_ORT_OMP = 1 << 0,
1309 : C_ORT_ACC = 1 << 1,
1310 : C_ORT_DECLARE_SIMD = 1 << 2,
1311 : C_ORT_TARGET = 1 << 3,
1312 : C_ORT_EXIT_DATA = 1 << 4,
1313 : C_ORT_INTEROP = 1 << 5,
1314 : C_ORT_DECLARE_MAPPER = 1 << 6,
1315 : C_ORT_OMP_DECLARE_SIMD = C_ORT_OMP | C_ORT_DECLARE_SIMD,
1316 : C_ORT_OMP_TARGET = C_ORT_OMP | C_ORT_TARGET,
1317 : C_ORT_OMP_EXIT_DATA = C_ORT_OMP | C_ORT_EXIT_DATA,
1318 : C_ORT_OMP_INTEROP = C_ORT_OMP | C_ORT_INTEROP,
1319 : C_ORT_OMP_DECLARE_MAPPER = C_ORT_OMP | C_ORT_DECLARE_MAPPER,
1320 : C_ORT_ACC_TARGET = C_ORT_ACC | C_ORT_TARGET
1321 : };
1322 :
1323 : extern tree c_finish_omp_master (location_t, tree);
1324 : extern tree c_finish_omp_masked (location_t, tree, tree);
1325 : extern tree c_finish_omp_taskgroup (location_t, tree, tree);
1326 : extern tree c_finish_omp_critical (location_t, tree, tree, tree);
1327 : extern tree c_finish_omp_ordered (location_t, tree, tree);
1328 : extern void c_finish_omp_barrier (location_t);
1329 : extern tree c_finish_omp_atomic (location_t, enum tree_code, enum tree_code,
1330 : tree, tree, tree, tree, tree, tree, bool,
1331 : enum omp_memory_order, bool, bool = false);
1332 : extern bool c_omp_interop_t_p (tree);
1333 : extern bool c_omp_depend_t_p (tree);
1334 : extern void c_finish_omp_depobj (location_t, tree, enum omp_clause_depend_kind,
1335 : tree);
1336 : extern void c_finish_omp_flush (location_t, int);
1337 : extern void c_finish_omp_taskwait (location_t);
1338 : extern void c_finish_omp_taskyield (location_t);
1339 : extern tree c_finish_omp_for (location_t, enum tree_code, tree, tree, tree,
1340 : tree, tree, tree, tree, bool);
1341 : extern int c_omp_find_generated_loop (tree &, int, walk_tree_lh);
1342 : extern bool c_omp_check_loop_iv (tree, tree, walk_tree_lh);
1343 : extern bool c_omp_check_loop_iv_exprs (location_t, enum tree_code, tree, int,
1344 : tree, tree, tree, walk_tree_lh);
1345 : extern bool c_omp_check_loop_binding_exprs (tree, vec<tree> *);
1346 : extern tree c_finish_oacc_wait (location_t, tree, tree);
1347 : extern tree c_oacc_split_loop_clauses (tree, tree *, bool);
1348 : extern void c_omp_split_clauses (location_t, enum tree_code, omp_clause_mask,
1349 : tree, tree *);
1350 : extern tree c_omp_declare_simd_clauses_to_numbers (tree, tree);
1351 : extern void c_omp_declare_simd_clauses_to_decls (tree, tree);
1352 : extern bool c_omp_predefined_variable (tree);
1353 : extern enum omp_clause_default_kind c_omp_predetermined_sharing (tree);
1354 : extern enum omp_clause_defaultmap_kind c_omp_predetermined_mapping (tree);
1355 : extern tree c_omp_check_context_selector (location_t, tree);
1356 : extern void c_omp_mark_declare_variant (location_t, tree, tree);
1357 : extern void c_omp_adjust_map_clauses (tree, bool);
1358 : template<typename T> struct omp_mapper_list;
1359 : extern void c_omp_find_nested_mappers (struct omp_mapper_list<tree> *, tree);
1360 : extern tree c_omp_instantiate_mappers (tree);
1361 :
1362 : namespace omp_addr_tokenizer { struct omp_addr_token; }
1363 : typedef omp_addr_tokenizer::omp_addr_token omp_addr_token;
1364 :
1365 : class c_omp_address_inspector
1366 : {
1367 : location_t loc;
1368 : tree root_term;
1369 : bool indirections;
1370 : int map_supported;
1371 :
1372 : protected:
1373 : tree orig;
1374 :
1375 : public:
1376 44598 : c_omp_address_inspector (location_t loc, tree t)
1377 44598 : : loc (loc), root_term (NULL_TREE), indirections (false),
1378 44598 : map_supported (-1), orig (t)
1379 : {
1380 : }
1381 :
1382 32412 : ~c_omp_address_inspector ()
1383 : {
1384 12186 : }
1385 :
1386 48523 : virtual bool processing_template_decl_p ()
1387 : {
1388 48523 : return false;
1389 : }
1390 :
1391 0 : virtual void emit_unmappable_type_notes (tree)
1392 : {
1393 0 : }
1394 :
1395 0 : virtual tree convert_from_reference (tree)
1396 : {
1397 0 : gcc_unreachable ();
1398 : }
1399 :
1400 19 : virtual tree build_array_ref (location_t loc, tree arr, tree idx)
1401 : {
1402 19 : tree eltype = TREE_TYPE (TREE_TYPE (arr));
1403 19 : return build4_loc (loc, ARRAY_REF, eltype, arr, idx, NULL_TREE,
1404 19 : NULL_TREE);
1405 : }
1406 :
1407 : virtual bool check_clause (tree);
1408 : tree get_root_term (bool);
1409 :
1410 : tree unconverted_ref_origin ();
1411 : bool component_access_p ();
1412 :
1413 : bool map_supported_p ();
1414 :
1415 : tree get_origin (tree);
1416 : tree maybe_unconvert_ref (tree);
1417 :
1418 : bool maybe_zero_length_array_section (tree);
1419 :
1420 : tree expand_array_base (tree, vec<omp_addr_token *> &, tree, unsigned *,
1421 : c_omp_region_type);
1422 : tree expand_component_selector (tree, vec<omp_addr_token *> &, tree,
1423 : unsigned *, c_omp_region_type);
1424 : tree expand_map_clause (tree, tree, vec<omp_addr_token *> &,
1425 : c_omp_region_type);
1426 : };
1427 :
1428 : enum c_omp_directive_kind {
1429 : C_OMP_DIR_STANDALONE,
1430 : C_OMP_DIR_CONSTRUCT,
1431 : C_OMP_DIR_DECLARATIVE,
1432 : C_OMP_DIR_UTILITY,
1433 : C_OMP_DIR_INFORMATIONAL,
1434 : C_OMP_DIR_META
1435 : };
1436 :
1437 : struct c_omp_directive {
1438 : const char *first, *second, *third;
1439 : unsigned int id;
1440 : enum c_omp_directive_kind kind;
1441 : bool simd;
1442 : };
1443 :
1444 : extern const struct c_omp_directive c_omp_directives[];
1445 : extern const struct c_omp_directive *c_omp_categorize_directive (const char *,
1446 : const char *,
1447 : const char *);
1448 : extern tree c_omp_expand_variant_construct (vec<struct omp_variant> &);
1449 :
1450 : /* Return next tree in the chain for chain_next walking of tree nodes. */
1451 : inline tree
1452 86585995582 : c_tree_chain_next (tree t)
1453 : {
1454 : /* TREE_CHAIN of a type is TYPE_STUB_DECL, which is different
1455 : kind of object, never a long chain of nodes. Prefer
1456 : TYPE_NEXT_VARIANT for types. */
1457 86585995582 : if (CODE_CONTAINS_STRUCT (TREE_CODE (t), TS_TYPE_COMMON))
1458 10055238684 : return TYPE_NEXT_VARIANT (t);
1459 : /* Otherwise, if there is TREE_CHAIN, return it. */
1460 76530756898 : if (CODE_CONTAINS_STRUCT (TREE_CODE (t), TS_COMMON))
1461 46087577152 : return TREE_CHAIN (t);
1462 : return NULL;
1463 : }
1464 :
1465 : /* Return the hardbool attribute associated with TYPE, if there is one, provided
1466 : that TYPE looks like an enumeral type that might have been set up by
1467 : handle_hardbool_attribute. Return NULL otherwise.
1468 :
1469 : If FALSE_VALUE or TRUE_VALUE are non-NULL and TYPE is a hardened boolean
1470 : type, store the corresponding representation values. */
1471 : static inline tree
1472 514174601 : c_hardbool_type_attr (tree type,
1473 : tree *false_value = NULL, tree *true_value = NULL)
1474 : {
1475 514174601 : if (TREE_CODE (type) != ENUMERAL_TYPE
1476 514174601 : || TYPE_LANG_SPECIFIC (type))
1477 : return NULL_TREE;
1478 :
1479 69449 : return c_hardbool_type_attr_1 (type, false_value, true_value);
1480 : }
1481 :
1482 : /* Mask used by tm_stmt_attr. */
1483 : #define TM_STMT_ATTR_OUTER 2
1484 : #define TM_STMT_ATTR_ATOMIC 4
1485 : #define TM_STMT_ATTR_RELAXED 8
1486 :
1487 : /* Mask used by tm_attr_to_mask and tm_mask_to_attr. Note that these
1488 : are ordered specifically such that more restrictive attributes are
1489 : at lower bit positions. This fact is known by the C++ tm attribute
1490 : inheritance code such that least bit extraction (mask & -mask) results
1491 : in the most restrictive attribute. */
1492 : #define TM_ATTR_SAFE 1
1493 : #define TM_ATTR_CALLABLE 2
1494 : #define TM_ATTR_PURE 4
1495 : #define TM_ATTR_IRREVOCABLE 8
1496 : #define TM_ATTR_MAY_CANCEL_OUTER 16
1497 :
1498 : /* A suffix-identifier value doublet that represents user-defined literals
1499 : for C++-0x. */
1500 : enum overflow_type {
1501 : OT_UNDERFLOW = -1,
1502 : OT_NONE,
1503 : OT_OVERFLOW
1504 : };
1505 :
1506 : struct GTY(()) tree_userdef_literal {
1507 : struct tree_base base;
1508 : tree suffix_id;
1509 : tree value;
1510 : tree num_string;
1511 : enum overflow_type overflow;
1512 : };
1513 :
1514 : #define USERDEF_LITERAL_SUFFIX_ID(NODE) \
1515 : (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->suffix_id)
1516 :
1517 : #define USERDEF_LITERAL_VALUE(NODE) \
1518 : (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->value)
1519 :
1520 : #define USERDEF_LITERAL_OVERFLOW(NODE) \
1521 : (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->overflow)
1522 :
1523 : #define USERDEF_LITERAL_NUM_STRING(NODE) \
1524 : (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->num_string)
1525 :
1526 : #define USERDEF_LITERAL_TYPE(NODE) \
1527 : (TREE_TYPE (USERDEF_LITERAL_VALUE (NODE)))
1528 :
1529 : extern tree build_userdef_literal (tree suffix_id, tree value,
1530 : enum overflow_type overflow,
1531 : tree num_string);
1532 :
1533 :
1534 : /* WHILE_STMT accessors. These give access to the condition of the
1535 : while statement, the body, and name of the while statement, and
1536 : condition preparation statements and number of its nested cleanups,
1537 : respectively. */
1538 : #define WHILE_COND(NODE) TREE_OPERAND (WHILE_STMT_CHECK (NODE), 0)
1539 : #define WHILE_BODY(NODE) TREE_OPERAND (WHILE_STMT_CHECK (NODE), 1)
1540 : #define WHILE_NAME(NODE) TREE_OPERAND (WHILE_STMT_CHECK (NODE), 2)
1541 : #define WHILE_COND_PREP(NODE) TREE_OPERAND (WHILE_STMT_CHECK (NODE), 3)
1542 : #define WHILE_COND_CLEANUP(NODE) TREE_OPERAND (WHILE_STMT_CHECK (NODE), 4)
1543 :
1544 : /* DO_STMT accessors. These give access to the condition of the do
1545 : statement, the body and name of the do statement, respectively. */
1546 : #define DO_COND(NODE) TREE_OPERAND (DO_STMT_CHECK (NODE), 0)
1547 : #define DO_BODY(NODE) TREE_OPERAND (DO_STMT_CHECK (NODE), 1)
1548 : #define DO_NAME(NODE) TREE_OPERAND (DO_STMT_CHECK (NODE), 2)
1549 :
1550 : /* FOR_STMT accessors. These give access to the init statement,
1551 : condition, update expression, body and name of the for statement,
1552 : and condition preparation statements and number of its nested cleanups,
1553 : respectively. */
1554 : #define FOR_INIT_STMT(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 0)
1555 : #define FOR_COND(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 1)
1556 : #define FOR_EXPR(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 2)
1557 : #define FOR_BODY(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 3)
1558 : #define FOR_SCOPE(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 4)
1559 : #define FOR_NAME(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 5)
1560 : #define FOR_COND_PREP(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 6)
1561 : #define FOR_COND_CLEANUP(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 7)
1562 :
1563 : /* BREAK_STMT accessors. */
1564 : #define BREAK_NAME(NODE) TREE_OPERAND (BREAK_STMT_CHECK (NODE), 0)
1565 :
1566 : /* CONTINUE_STMT accessors. */
1567 : #define CONTINUE_NAME(NODE) TREE_OPERAND (CONTINUE_STMT_CHECK (NODE), 0)
1568 :
1569 : #define SWITCH_STMT_COND(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 0)
1570 : #define SWITCH_STMT_BODY(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 1)
1571 : #define SWITCH_STMT_TYPE(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 2)
1572 : #define SWITCH_STMT_SCOPE(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 3)
1573 : #define SWITCH_STMT_NAME(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 4)
1574 : /* True if there are case labels for all possible values of switch cond, either
1575 : because there is a default: case label or because the case label ranges cover
1576 : all values. */
1577 : #define SWITCH_STMT_ALL_CASES_P(NODE) \
1578 : TREE_LANG_FLAG_0 (SWITCH_STMT_CHECK (NODE))
1579 : /* True if the body of a switch stmt contains no BREAK_STMTs. */
1580 : #define SWITCH_STMT_NO_BREAK_P(NODE) \
1581 : TREE_LANG_FLAG_2 (SWITCH_STMT_CHECK (NODE))
1582 :
1583 :
1584 : /* Nonzero if NODE is the target for genericization of 'break' stmts. */
1585 : #define LABEL_DECL_BREAK(NODE) \
1586 : DECL_LANG_FLAG_0 (LABEL_DECL_CHECK (NODE))
1587 :
1588 : /* Nonzero if NODE is the target for genericization of 'continue' stmts. */
1589 : #define LABEL_DECL_CONTINUE(NODE) \
1590 : DECL_LANG_FLAG_1 (LABEL_DECL_CHECK (NODE))
1591 :
1592 : extern bool convert_vector_to_array_for_subscript (location_t, tree *, tree);
1593 :
1594 : /* Possibe cases of scalar_to_vector conversion. */
1595 : enum stv_conv {
1596 : stv_error, /* Error occurred. */
1597 : stv_nothing, /* Nothing happened. */
1598 : stv_firstarg, /* First argument must be expanded. */
1599 : stv_secondarg /* Second argument must be expanded. */
1600 : };
1601 :
1602 : extern enum stv_conv scalar_to_vector (location_t loc, enum tree_code code,
1603 : tree op0, tree op1, bool);
1604 :
1605 : extern tree find_inv_trees (tree *, int *, void *);
1606 : extern tree replace_inv_trees (tree *, int *, void *);
1607 :
1608 : extern bool reject_gcc_builtin (const_tree, location_t = UNKNOWN_LOCATION);
1609 : extern bool valid_array_size_p (location_t, const_tree, tree, bool = true);
1610 : extern void invalid_array_size_error (location_t, cst_size_error,
1611 : const_tree, const_tree);
1612 :
1613 : /* In c-warn.cc. */
1614 : extern void constant_expression_warning (tree);
1615 : extern void constant_expression_error (tree);
1616 : extern void overflow_warning (location_t, tree, tree = NULL_TREE);
1617 : extern void warn_logical_operator (location_t, enum tree_code, tree,
1618 : enum tree_code, tree, enum tree_code, tree);
1619 : extern void warn_tautological_cmp (const op_location_t &, enum tree_code,
1620 : tree, tree);
1621 : extern void warn_logical_not_parentheses (location_t, enum tree_code, tree,
1622 : tree);
1623 : extern bool warn_if_unused_value (const_tree, location_t, bool = false);
1624 : extern bool strict_aliasing_warning (location_t, tree, tree);
1625 : extern void sizeof_pointer_memaccess_warning (location_t *, tree,
1626 : vec<tree, va_gc> *, tree *,
1627 : bool (*) (tree, tree));
1628 : extern void check_main_parameter_types (tree decl);
1629 : extern void warnings_for_convert_and_check (location_t, tree, tree, tree);
1630 : extern void c_do_switch_warnings (splay_tree, location_t, tree, tree, bool);
1631 : extern void warn_for_omitted_condop (location_t, tree);
1632 : extern bool warn_for_restrict (unsigned, tree *, unsigned);
1633 : extern void warn_for_address_of_packed_member (tree, tree);
1634 : extern void warn_parms_array_mismatch (location_t, tree, tree);
1635 : extern void maybe_warn_sizeof_array_div (location_t, tree, tree, tree, tree);
1636 : extern void do_warn_array_compare (location_t, tree_code, tree, tree);
1637 :
1638 : /* Places where an lvalue, or modifiable lvalue, may be required.
1639 : Used to select diagnostic messages in lvalue_error and
1640 : readonly_error. */
1641 : enum lvalue_use {
1642 : lv_assign,
1643 : lv_increment,
1644 : lv_decrement,
1645 : lv_addressof,
1646 : lv_asm
1647 : };
1648 :
1649 : extern void lvalue_error (location_t, enum lvalue_use);
1650 : extern void invalid_indirection_error (location_t, tree, ref_operator);
1651 : extern void readonly_error (location_t, tree, enum lvalue_use);
1652 : extern void warn_array_subscript_with_type_char (location_t, tree);
1653 : extern void warn_about_parentheses (location_t,
1654 : enum tree_code,
1655 : enum tree_code, tree,
1656 : enum tree_code, tree);
1657 : extern void warn_for_unused_label (tree label);
1658 : extern void warn_for_div_by_zero (location_t, tree divisor);
1659 : extern void warn_for_memset (location_t, tree, tree, int);
1660 : extern void warn_for_calloc (location_t *, tree, vec<tree, va_gc> *,
1661 : tree *, tree);
1662 : extern void warn_for_alloc_size (location_t, tree, tree, tree);
1663 : extern void warn_for_sign_compare (location_t,
1664 : tree orig_op0, tree orig_op1,
1665 : tree op0, tree op1,
1666 : tree result_type,
1667 : enum tree_code resultcode);
1668 : extern void do_warn_double_promotion (tree, tree, tree, const char *,
1669 : location_t);
1670 : extern void do_warn_unused_parameter (tree);
1671 : extern void record_locally_defined_typedef (tree);
1672 : extern void maybe_record_typedef_use (tree);
1673 : extern void maybe_warn_unused_local_typedefs (void);
1674 : extern void maybe_warn_bool_compare (location_t, enum tree_code, tree, tree);
1675 : extern bool maybe_warn_shift_overflow (location_t, tree, tree);
1676 : extern void warn_duplicated_cond_add_or_warn (location_t, tree, vec<tree> **);
1677 : extern bool diagnose_mismatched_attributes (tree, tree);
1678 : extern tree do_warn_duplicated_branches_r (tree *, int *, void *);
1679 : extern void warn_for_multistatement_macros (location_t, location_t,
1680 : location_t, enum rid);
1681 :
1682 : extern void check_for_xor_used_as_pow (location_t lhs_loc, tree lhs_val,
1683 : location_t operator_loc,
1684 : location_t rhs_loc, tree rhs_val);
1685 :
1686 : /* In c-attribs.cc. */
1687 : extern bool attribute_takes_identifier_p (const_tree);
1688 : extern tree handle_deprecated_attribute (tree *, tree, tree, int, bool *);
1689 : extern tree handle_unused_attribute (tree *, tree, tree, int, bool *);
1690 : extern tree handle_fallthrough_attribute (tree *, tree, tree, int, bool *);
1691 : extern int parse_tm_stmt_attr (tree, int);
1692 : extern int tm_attr_to_mask (tree);
1693 : extern tree tm_mask_to_attr (int);
1694 : extern tree find_tm_attribute (tree);
1695 : extern const struct attribute_spec::exclusions attr_aligned_exclusions[];
1696 : extern const struct attribute_spec::exclusions attr_cold_hot_exclusions[];
1697 : extern const struct attribute_spec::exclusions attr_noreturn_exclusions[];
1698 : extern tree handle_aligned_attribute (tree *, tree, tree, int, bool *);
1699 : extern tree handle_noreturn_attribute (tree *, tree, tree, int, bool *);
1700 : extern tree handle_musttail_attribute (tree *, tree, tree, int, bool *);
1701 : extern bool has_attribute (location_t, tree, tree, tree (*)(tree));
1702 : extern tree build_attr_access_from_parms (tree, bool);
1703 : extern void set_musttail_on_return (tree, location_t, bool);
1704 :
1705 : /* In c-format.cc. */
1706 : extern bool valid_format_string_type_p (tree);
1707 :
1708 : /* A bitmap of flags to positional_argument. */
1709 : enum posargflags {
1710 : /* Consider positional attribute argument value zero valid. */
1711 : POSARG_ZERO = 1,
1712 : /* Consider positional attribute argument value valid if it refers
1713 : to the ellipsis (i.e., beyond the last typed argument). */
1714 : POSARG_ELLIPSIS = 2
1715 : };
1716 :
1717 : extern tree positional_argument (const_tree, const_tree, tree &, tree_code,
1718 : int = 0, int = posargflags ());
1719 :
1720 : extern enum flt_eval_method
1721 : excess_precision_mode_join (enum flt_eval_method, enum flt_eval_method);
1722 :
1723 : extern int c_flt_eval_method (bool ts18661_p);
1724 : extern void add_no_sanitize_value (tree node, sanitize_code_type flags);
1725 :
1726 : extern void maybe_add_include_fixit (rich_location *, const char *, bool);
1727 : extern void maybe_suggest_missing_token_insertion (rich_location *richloc,
1728 : enum cpp_ttype token_type,
1729 : location_t prev_token_loc);
1730 : extern void maybe_emit_indirection_note (location_t loc,
1731 : tree expr, tree expected_type);
1732 : extern bool compatible_types_for_indirection_note_p (tree type1, tree type2);
1733 :
1734 : extern tree braced_lists_to_strings (tree, tree);
1735 :
1736 : #if CHECKING_P
1737 : namespace selftest {
1738 : /* Declarations for specific families of tests within c-family,
1739 : by source file, in alphabetical order. */
1740 : extern void c_format_cc_tests (void);
1741 : extern void c_indentation_cc_tests (void);
1742 : extern void c_opt_problem_cc_tests (void);
1743 : extern void c_pretty_print_cc_tests (void);
1744 : extern void c_spellcheck_cc_tests (void);
1745 :
1746 : /* The entrypoint for running all of the above tests. */
1747 : extern void c_family_tests (void);
1748 : } // namespace selftest
1749 : #endif /* #if CHECKING_P */
1750 :
1751 : #endif /* ! GCC_C_COMMON_H */
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