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1 : : /* Definitions for c-common.cc.
2 : : Copyright (C) 1987-2024 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_C23_VA_START, RID_VA_ARG,
109 : : RID_EXTENSION, RID_IMAGPART, RID_REALPART, RID_LABEL, RID_CHOOSE_EXPR,
110 : : RID_TYPES_COMPATIBLE_P, RID_BUILTIN_COMPLEX, RID_BUILTIN_SHUFFLE,
111 : : RID_BUILTIN_SHUFFLEVECTOR, RID_BUILTIN_CONVERTVECTOR, RID_BUILTIN_TGMATH,
112 : : RID_BUILTIN_HAS_ATTRIBUTE, RID_BUILTIN_ASSOC_BARRIER, RID_BUILTIN_STDC,
113 : : RID_BUILTIN_COUNTED_BY_REF,
114 : : RID_DFLOAT32, RID_DFLOAT64, RID_DFLOAT128, RID_DFLOAT64X,
115 : :
116 : : /* TS 18661-3 keywords, in the same sequence as the TI_* values. */
117 : : RID_FLOAT16,
118 : : RID_FLOATN_NX_FIRST = RID_FLOAT16,
119 : : RID_FLOAT32,
120 : : RID_FLOAT64,
121 : : RID_FLOAT128,
122 : : RID_FLOAT32X,
123 : : RID_FLOAT64X,
124 : : RID_FLOAT128X,
125 : : #define CASE_RID_FLOATN_NX \
126 : : case RID_FLOAT16: case RID_FLOAT32: case RID_FLOAT64: case RID_FLOAT128: \
127 : : case RID_FLOAT32X: case RID_FLOAT64X: case RID_FLOAT128X
128 : :
129 : : RID_FRACT, RID_ACCUM, RID_AUTO_TYPE, RID_BUILTIN_CALL_WITH_STATIC_CHAIN,
130 : :
131 : : /* "__GIMPLE", for the GIMPLE-parsing extension to the C frontend. */
132 : : RID_GIMPLE,
133 : :
134 : : /* "__PHI", for parsing PHI function in GIMPLE FE. */
135 : : RID_PHI,
136 : :
137 : : /* "__RTL", for the RTL-parsing extension to the C frontend. */
138 : : RID_RTL,
139 : :
140 : : /* C11 */
141 : : RID_ALIGNAS, RID_GENERIC,
142 : :
143 : : /* This means to warn that this is a C++ keyword, and then treat it
144 : : as a normal identifier. */
145 : : RID_CXX_COMPAT_WARN,
146 : :
147 : : /* GNU transactional memory extension */
148 : : RID_TRANSACTION_ATOMIC, RID_TRANSACTION_RELAXED, RID_TRANSACTION_CANCEL,
149 : :
150 : : /* Too many ways of getting the name of a function as a string */
151 : : RID_FUNCTION_NAME, RID_PRETTY_FUNCTION_NAME, RID_C99_FUNCTION_NAME,
152 : :
153 : : /* C++ (some of these are keywords in Objective-C as well, but only
154 : : if they appear after a '@') */
155 : : RID_BOOL, RID_WCHAR, RID_CLASS,
156 : : RID_PUBLIC, RID_PRIVATE, RID_PROTECTED,
157 : : RID_TEMPLATE, RID_NULL, RID_CATCH,
158 : : RID_DELETE, RID_FALSE, RID_NAMESPACE,
159 : : RID_NEW, RID_OFFSETOF, RID_OPERATOR,
160 : : RID_THIS, RID_THROW, RID_TRUE,
161 : : RID_TRY, RID_TYPENAME, RID_TYPEID,
162 : : RID_USING, RID_CHAR16, RID_CHAR32,
163 : :
164 : : /* casts */
165 : : RID_CONSTCAST, RID_DYNCAST, RID_REINTCAST, RID_STATCAST,
166 : :
167 : : /* C++ extensions */
168 : : RID_ADDRESSOF,
169 : : RID_BUILTIN_LAUNDER,
170 : : RID_BUILTIN_BIT_CAST,
171 : : RID_BUILTIN_OPERATOR_NEW, RID_BUILTIN_OPERATOR_DELETE,
172 : :
173 : : /* C++11 */
174 : : RID_CONSTEXPR, RID_DECLTYPE, RID_NOEXCEPT, RID_NULLPTR, RID_STATIC_ASSERT,
175 : :
176 : : /* C++20 */
177 : : RID_CONSTINIT, RID_CONSTEVAL,
178 : :
179 : : /* char8_t */
180 : : RID_CHAR8,
181 : :
182 : : /* C++ concepts */
183 : : RID_CONCEPT, RID_REQUIRES,
184 : :
185 : : /* C++ modules. */
186 : : RID__MODULE, RID__IMPORT, RID__EXPORT, /* Internal tokens. */
187 : :
188 : : /* C++ coroutines */
189 : : RID_CO_AWAIT, RID_CO_YIELD, RID_CO_RETURN,
190 : :
191 : : /* C++ transactional memory. */
192 : : RID_ATOMIC_NOEXCEPT, RID_ATOMIC_CANCEL, RID_SYNCHRONIZED,
193 : :
194 : : /* Objective-C ("AT" reserved words - they are only keywords when
195 : : they follow '@') */
196 : : RID_AT_ENCODE, RID_AT_END,
197 : : RID_AT_CLASS, RID_AT_ALIAS, RID_AT_DEFS,
198 : : RID_AT_PRIVATE, RID_AT_PROTECTED, RID_AT_PUBLIC, RID_AT_PACKAGE,
199 : : RID_AT_PROTOCOL, RID_AT_SELECTOR,
200 : : RID_AT_THROW, RID_AT_TRY, RID_AT_CATCH,
201 : : RID_AT_FINALLY, RID_AT_SYNCHRONIZED,
202 : : RID_AT_OPTIONAL, RID_AT_REQUIRED, RID_AT_PROPERTY,
203 : : RID_AT_SYNTHESIZE, RID_AT_DYNAMIC,
204 : : RID_AT_INTERFACE,
205 : : RID_AT_IMPLEMENTATION,
206 : :
207 : : /* OpenMP */
208 : : RID_OMP_ALL_MEMORY,
209 : :
210 : : /* Named address support, mapping the keyword to a particular named address
211 : : number. Named address space 0 is reserved for the generic address. If
212 : : there are more than 254 named addresses, the addr_space_t type will need
213 : : to be grown from an unsigned char to unsigned short. */
214 : : RID_ADDR_SPACE_0, /* generic address */
215 : : RID_ADDR_SPACE_1,
216 : : RID_ADDR_SPACE_2,
217 : : RID_ADDR_SPACE_3,
218 : : RID_ADDR_SPACE_4,
219 : : RID_ADDR_SPACE_5,
220 : : RID_ADDR_SPACE_6,
221 : : RID_ADDR_SPACE_7,
222 : : RID_ADDR_SPACE_8,
223 : : RID_ADDR_SPACE_9,
224 : : RID_ADDR_SPACE_10,
225 : : RID_ADDR_SPACE_11,
226 : : RID_ADDR_SPACE_12,
227 : : RID_ADDR_SPACE_13,
228 : : RID_ADDR_SPACE_14,
229 : : RID_ADDR_SPACE_15,
230 : :
231 : : RID_FIRST_ADDR_SPACE = RID_ADDR_SPACE_0,
232 : : RID_LAST_ADDR_SPACE = RID_ADDR_SPACE_15,
233 : :
234 : : /* __intN keywords. The _N_M here doesn't correspond to the intN
235 : : in the keyword; use the bitsize in int_n_t_data_t[M] for that.
236 : : For example, if int_n_t_data_t[0].bitsize is 13, then RID_INT_N_0
237 : : is for __int13. */
238 : :
239 : : /* Note that the range to use is RID_FIRST_INT_N through
240 : : RID_FIRST_INT_N + NUM_INT_N_ENTS - 1 and c-parser.cc has a list of
241 : : all RID_INT_N_* in a case statement. */
242 : :
243 : : RID_INT_N_0,
244 : : RID_INT_N_1,
245 : : RID_INT_N_2,
246 : : RID_INT_N_3,
247 : :
248 : : RID_FIRST_INT_N = RID_INT_N_0,
249 : : RID_LAST_INT_N = RID_INT_N_3,
250 : :
251 : : RID_MAX,
252 : :
253 : : RID_FIRST_MODIFIER = RID_STATIC,
254 : : RID_LAST_MODIFIER = RID_ONEWAY,
255 : :
256 : : RID_FIRST_CXX11 = RID_CONSTEXPR,
257 : : RID_LAST_CXX11 = RID_STATIC_ASSERT,
258 : : RID_FIRST_CXX20 = RID_CONSTINIT,
259 : : RID_LAST_CXX20 = RID_CO_RETURN,
260 : : RID_FIRST_AT = RID_AT_ENCODE,
261 : : RID_LAST_AT = RID_AT_IMPLEMENTATION,
262 : : RID_FIRST_PQ = RID_IN,
263 : : RID_LAST_PQ = RID_ONEWAY,
264 : : RID_FIRST_PATTR = RID_GETTER,
265 : : RID_LAST_PATTR = RID_NULL_RESETTABLE
266 : : };
267 : :
268 : : #define OBJC_IS_AT_KEYWORD(rid) \
269 : : ((unsigned int) (rid) >= (unsigned int) RID_FIRST_AT && \
270 : : (unsigned int) (rid) <= (unsigned int) RID_LAST_AT)
271 : :
272 : : #define OBJC_IS_PQ_KEYWORD(rid) \
273 : : ((unsigned int) (rid) >= (unsigned int) RID_FIRST_PQ && \
274 : : (unsigned int) (rid) <= (unsigned int) RID_LAST_PQ)
275 : :
276 : : /* Keywords permitted in an @property attribute context. */
277 : : #define OBJC_IS_PATTR_KEYWORD(rid) \
278 : : ((((unsigned int) (rid) >= (unsigned int) RID_FIRST_PATTR && \
279 : : (unsigned int) (rid) <= (unsigned int) RID_LAST_PATTR)) \
280 : : || rid == RID_CLASS)
281 : :
282 : : /* OBJC_IS_CXX_KEYWORD recognizes the 'CXX_OBJC' keywords (such as
283 : : 'class') which are shared in a subtle way between Objective-C and
284 : : C++. When the lexer is lexing in Objective-C/Objective-C++, if it
285 : : finds '@' followed by one of these identifiers (eg, '@class'), it
286 : : recognizes the whole as an Objective-C keyword. If the identifier
287 : : is found elsewhere, it follows the rules of the C/C++ language.
288 : : */
289 : : #define OBJC_IS_CXX_KEYWORD(rid) \
290 : : (rid == RID_CLASS || rid == RID_SYNCHRONIZED \
291 : : || rid == RID_PUBLIC || rid == RID_PROTECTED || rid == RID_PRIVATE \
292 : : || rid == RID_TRY || rid == RID_THROW || rid == RID_CATCH)
293 : :
294 : : /* The elements of `ridpointers' are identifier nodes for the reserved
295 : : type names and storage classes. It is indexed by a RID_... value. */
296 : : extern GTY ((length ("(int) RID_MAX"))) tree *ridpointers;
297 : :
298 : : /* Standard named or nameless data types of the C compiler. */
299 : :
300 : : enum c_tree_index
301 : : {
302 : : CTI_CHAR8_TYPE,
303 : : CTI_CHAR16_TYPE,
304 : : CTI_CHAR32_TYPE,
305 : : CTI_WCHAR_TYPE,
306 : : CTI_UNDERLYING_WCHAR_TYPE,
307 : : CTI_WINT_TYPE,
308 : : CTI_SIGNED_SIZE_TYPE, /* For format checking only. */
309 : : CTI_UNSIGNED_PTRDIFF_TYPE, /* For format checking only. */
310 : : CTI_INTMAX_TYPE,
311 : : CTI_UINTMAX_TYPE,
312 : : CTI_WIDEST_INT_LIT_TYPE,
313 : : CTI_WIDEST_UINT_LIT_TYPE,
314 : :
315 : : /* Types for <stdint.h>, that may not be defined on all
316 : : targets. */
317 : : CTI_SIG_ATOMIC_TYPE,
318 : : CTI_INT8_TYPE,
319 : : CTI_INT16_TYPE,
320 : : CTI_INT32_TYPE,
321 : : CTI_INT64_TYPE,
322 : : CTI_UINT8_TYPE,
323 : : CTI_UINT16_TYPE,
324 : : CTI_UINT32_TYPE,
325 : : CTI_UINT64_TYPE,
326 : : CTI_INT_LEAST8_TYPE,
327 : : CTI_INT_LEAST16_TYPE,
328 : : CTI_INT_LEAST32_TYPE,
329 : : CTI_INT_LEAST64_TYPE,
330 : : CTI_UINT_LEAST8_TYPE,
331 : : CTI_UINT_LEAST16_TYPE,
332 : : CTI_UINT_LEAST32_TYPE,
333 : : CTI_UINT_LEAST64_TYPE,
334 : : CTI_INT_FAST8_TYPE,
335 : : CTI_INT_FAST16_TYPE,
336 : : CTI_INT_FAST32_TYPE,
337 : : CTI_INT_FAST64_TYPE,
338 : : CTI_UINT_FAST8_TYPE,
339 : : CTI_UINT_FAST16_TYPE,
340 : : CTI_UINT_FAST32_TYPE,
341 : : CTI_UINT_FAST64_TYPE,
342 : : CTI_INTPTR_TYPE,
343 : : CTI_UINTPTR_TYPE,
344 : :
345 : : CTI_CHAR_ARRAY_TYPE,
346 : : CTI_CHAR8_ARRAY_TYPE,
347 : : CTI_CHAR16_ARRAY_TYPE,
348 : : CTI_CHAR32_ARRAY_TYPE,
349 : : CTI_WCHAR_ARRAY_TYPE,
350 : : CTI_STRING_TYPE,
351 : : CTI_CONST_STRING_TYPE,
352 : :
353 : : /* Type for boolean expressions (bool in C++, int in C). */
354 : : CTI_TRUTHVALUE_TYPE,
355 : : CTI_TRUTHVALUE_TRUE,
356 : : CTI_TRUTHVALUE_FALSE,
357 : :
358 : : CTI_DEFAULT_FUNCTION_TYPE,
359 : :
360 : : CTI_NULL,
361 : : CTI_NULLPTR,
362 : : CTI_NULLPTR_TYPE,
363 : :
364 : : /* These are not types, but we have to look them up all the time. */
365 : : CTI_FUNCTION_NAME_DECL,
366 : : CTI_PRETTY_FUNCTION_NAME_DECL,
367 : : CTI_C99_FUNCTION_NAME_DECL,
368 : :
369 : : CTI_MODULE_HWM,
370 : : /* Below here entities change during compilation. */
371 : :
372 : : CTI_SAVED_FUNCTION_NAME_DECLS,
373 : :
374 : : CTI_MAX
375 : : };
376 : :
377 : : #define C_CPP_HASHNODE(id) \
378 : : (&(((struct c_common_identifier *) (id))->node))
379 : : #define C_RID_CODE(id) \
380 : : ((enum rid) (((struct c_common_identifier *) (id))->node.rid_code))
381 : : #define C_SET_RID_CODE(id, code) \
382 : : (((struct c_common_identifier *) (id))->node.rid_code = (unsigned char) code)
383 : :
384 : : /* Identifier part common to the C front ends. Inherits from
385 : : tree_identifier, despite appearances. */
386 : : struct GTY(()) c_common_identifier {
387 : : struct tree_common common;
388 : : struct cpp_hashnode node;
389 : : };
390 : :
391 : : /* An entry in the reserved keyword table. */
392 : :
393 : : struct c_common_resword
394 : : {
395 : : const char *const word;
396 : : ENUM_BITFIELD(rid) const rid : 16;
397 : : const unsigned int disable : 32;
398 : : };
399 : :
400 : : /* Mode used to build pointers (VOIDmode means ptr_mode). */
401 : :
402 : : extern machine_mode c_default_pointer_mode;
403 : :
404 : : /* Extra cpp_ttype values for C++. */
405 : :
406 : : /* A token type for template-ids. If a template-id is processed while
407 : : parsing tentatively, it is replaced with a CPP_TEMPLATE_ID token;
408 : : the value of the CPP_TEMPLATE_ID is whatever was returned by
409 : : cp_parser_template_id. */
410 : : #define CPP_TEMPLATE_ID ((enum cpp_ttype) (CPP_KEYWORD + 1))
411 : :
412 : : /* A token type for nested-name-specifiers. If a
413 : : nested-name-specifier is processed while parsing tentatively, it is
414 : : replaced with a CPP_NESTED_NAME_SPECIFIER token; the value of the
415 : : CPP_NESTED_NAME_SPECIFIER is whatever was returned by
416 : : cp_parser_nested_name_specifier_opt. */
417 : : #define CPP_NESTED_NAME_SPECIFIER ((enum cpp_ttype) (CPP_TEMPLATE_ID + 1))
418 : :
419 : : /* A token type for pre-parsed C++0x decltype. */
420 : : #define CPP_DECLTYPE ((enum cpp_ttype) (CPP_NESTED_NAME_SPECIFIER + 1))
421 : :
422 : : /* A token type for pre-parsed primary-expression (lambda- or statement-). */
423 : : #define CPP_PREPARSED_EXPR ((enum cpp_ttype) (CPP_DECLTYPE + 1))
424 : :
425 : : /* The number of token types, including C++-specific ones. */
426 : : #define N_CP_TTYPES ((int) (CPP_PREPARSED_EXPR + 1))
427 : :
428 : : /* Disable mask. Keywords are disabled if (reswords[i].disable &
429 : : mask) is _true_. Thus for keywords which are present in all
430 : : languages the disable field is zero. */
431 : :
432 : : #define D_CONLY 0x0001 /* C only (not in C++). */
433 : : #define D_CXXONLY 0x0002 /* C++ only (not in C). */
434 : : #define D_C99 0x0004 /* In C, C99 only. */
435 : : #define D_C23 0x0008 /* In C, C23 only. */
436 : : #define D_CXX11 0x0010 /* In C++, C++11 only. */
437 : : #define D_EXT 0x0020 /* GCC extension. */
438 : : #define D_EXT89 0x0040 /* GCC extension incorporated in C99. */
439 : : #define D_EXT11 0x0080 /* GCC extension incorporated in C23. */
440 : : #define D_ASM 0x0100 /* Disabled by -fno-asm. */
441 : : #define D_OBJC 0x0200 /* In Objective C and neither C nor C++. */
442 : : #define D_CXX_OBJC 0x0400 /* In Objective C, and C++, but not C. */
443 : : #define D_CXXWARN 0x0800 /* In C warn with -Wcxx-compat. */
444 : : #define D_CXX_CONCEPTS 0x1000 /* In C++, only with concepts. */
445 : : #define D_TRANSMEM 0x2000 /* C++ transactional memory TS. */
446 : : #define D_CXX_CHAR8_T 0x4000 /* In C++, only with -fchar8_t. */
447 : : #define D_CXX20 0x8000 /* In C++, C++20 only. */
448 : : #define D_CXX_COROUTINES 0x10000 /* In C++, only with coroutines. */
449 : : #define D_CXX_MODULES 0x20000 /* In C++, only with modules. */
450 : :
451 : : #define D_CXX_CONCEPTS_FLAGS D_CXXONLY | D_CXX_CONCEPTS
452 : : #define D_CXX_CHAR8_T_FLAGS D_CXXONLY | D_CXX_CHAR8_T
453 : : #define D_CXX_MODULES_FLAGS (D_CXXONLY | D_CXX_MODULES)
454 : : #define D_CXX_COROUTINES_FLAGS (D_CXXONLY | D_CXX_COROUTINES)
455 : :
456 : : /* The reserved keyword table. */
457 : : extern const struct c_common_resword c_common_reswords[];
458 : :
459 : : /* The number of items in the reserved keyword table. */
460 : : extern const unsigned int num_c_common_reswords;
461 : :
462 : : #define char8_type_node c_global_trees[CTI_CHAR8_TYPE]
463 : : #define char16_type_node c_global_trees[CTI_CHAR16_TYPE]
464 : : #define char32_type_node c_global_trees[CTI_CHAR32_TYPE]
465 : : #define wchar_type_node c_global_trees[CTI_WCHAR_TYPE]
466 : : #define underlying_wchar_type_node c_global_trees[CTI_UNDERLYING_WCHAR_TYPE]
467 : : #define wint_type_node c_global_trees[CTI_WINT_TYPE]
468 : : #define signed_size_type_node c_global_trees[CTI_SIGNED_SIZE_TYPE]
469 : : #define unsigned_ptrdiff_type_node c_global_trees[CTI_UNSIGNED_PTRDIFF_TYPE]
470 : : #define intmax_type_node c_global_trees[CTI_INTMAX_TYPE]
471 : : #define uintmax_type_node c_global_trees[CTI_UINTMAX_TYPE]
472 : : #define widest_integer_literal_type_node c_global_trees[CTI_WIDEST_INT_LIT_TYPE]
473 : : #define widest_unsigned_literal_type_node c_global_trees[CTI_WIDEST_UINT_LIT_TYPE]
474 : :
475 : : #define sig_atomic_type_node c_global_trees[CTI_SIG_ATOMIC_TYPE]
476 : : #define int8_type_node c_global_trees[CTI_INT8_TYPE]
477 : : #define int16_type_node c_global_trees[CTI_INT16_TYPE]
478 : : #define int32_type_node c_global_trees[CTI_INT32_TYPE]
479 : : #define int64_type_node c_global_trees[CTI_INT64_TYPE]
480 : : #define uint8_type_node c_global_trees[CTI_UINT8_TYPE]
481 : : #define c_uint16_type_node c_global_trees[CTI_UINT16_TYPE]
482 : : #define c_uint32_type_node c_global_trees[CTI_UINT32_TYPE]
483 : : #define c_uint64_type_node c_global_trees[CTI_UINT64_TYPE]
484 : : #define int_least8_type_node c_global_trees[CTI_INT_LEAST8_TYPE]
485 : : #define int_least16_type_node c_global_trees[CTI_INT_LEAST16_TYPE]
486 : : #define int_least32_type_node c_global_trees[CTI_INT_LEAST32_TYPE]
487 : : #define int_least64_type_node c_global_trees[CTI_INT_LEAST64_TYPE]
488 : : #define uint_least8_type_node c_global_trees[CTI_UINT_LEAST8_TYPE]
489 : : #define uint_least16_type_node c_global_trees[CTI_UINT_LEAST16_TYPE]
490 : : #define uint_least32_type_node c_global_trees[CTI_UINT_LEAST32_TYPE]
491 : : #define uint_least64_type_node c_global_trees[CTI_UINT_LEAST64_TYPE]
492 : : #define int_fast8_type_node c_global_trees[CTI_INT_FAST8_TYPE]
493 : : #define int_fast16_type_node c_global_trees[CTI_INT_FAST16_TYPE]
494 : : #define int_fast32_type_node c_global_trees[CTI_INT_FAST32_TYPE]
495 : : #define int_fast64_type_node c_global_trees[CTI_INT_FAST64_TYPE]
496 : : #define uint_fast8_type_node c_global_trees[CTI_UINT_FAST8_TYPE]
497 : : #define uint_fast16_type_node c_global_trees[CTI_UINT_FAST16_TYPE]
498 : : #define uint_fast32_type_node c_global_trees[CTI_UINT_FAST32_TYPE]
499 : : #define uint_fast64_type_node c_global_trees[CTI_UINT_FAST64_TYPE]
500 : : #define intptr_type_node c_global_trees[CTI_INTPTR_TYPE]
501 : : #define uintptr_type_node c_global_trees[CTI_UINTPTR_TYPE]
502 : :
503 : : #define truthvalue_type_node c_global_trees[CTI_TRUTHVALUE_TYPE]
504 : : #define truthvalue_true_node c_global_trees[CTI_TRUTHVALUE_TRUE]
505 : : #define truthvalue_false_node c_global_trees[CTI_TRUTHVALUE_FALSE]
506 : :
507 : : #define char_array_type_node c_global_trees[CTI_CHAR_ARRAY_TYPE]
508 : : #define char8_array_type_node c_global_trees[CTI_CHAR8_ARRAY_TYPE]
509 : : #define char16_array_type_node c_global_trees[CTI_CHAR16_ARRAY_TYPE]
510 : : #define char32_array_type_node c_global_trees[CTI_CHAR32_ARRAY_TYPE]
511 : : #define wchar_array_type_node c_global_trees[CTI_WCHAR_ARRAY_TYPE]
512 : : #define string_type_node c_global_trees[CTI_STRING_TYPE]
513 : : #define const_string_type_node c_global_trees[CTI_CONST_STRING_TYPE]
514 : :
515 : : #define default_function_type c_global_trees[CTI_DEFAULT_FUNCTION_TYPE]
516 : :
517 : : #define function_name_decl_node c_global_trees[CTI_FUNCTION_NAME_DECL]
518 : : #define pretty_function_name_decl_node c_global_trees[CTI_PRETTY_FUNCTION_NAME_DECL]
519 : : #define c99_function_name_decl_node c_global_trees[CTI_C99_FUNCTION_NAME_DECL]
520 : : #define saved_function_name_decls c_global_trees[CTI_SAVED_FUNCTION_NAME_DECLS]
521 : :
522 : : /* The node for C++ `__null'. */
523 : : #define null_node c_global_trees[CTI_NULL]
524 : : /* The nodes for `nullptr'. */
525 : : #define nullptr_node c_global_trees[CTI_NULLPTR]
526 : : #define nullptr_type_node c_global_trees[CTI_NULLPTR_TYPE]
527 : :
528 : : extern GTY(()) tree c_global_trees[CTI_MAX];
529 : :
530 : : /* Mark which labels are explicitly declared.
531 : : These may be shadowed, and may be referenced from nested functions. */
532 : : #define C_DECLARED_LABEL_FLAG(label) TREE_LANG_FLAG_1 (label)
533 : :
534 : : enum c_language_kind
535 : : {
536 : : clk_c = 0, /* C without ObjC features. */
537 : : clk_objc = 1, /* clk_c with ObjC features. */
538 : : clk_cxx = 2, /* ANSI/ISO C++ */
539 : : clk_objcxx = 3 /* clk_cxx with ObjC features. */
540 : : };
541 : :
542 : : /* To test for a specific language use c_language, defined by each
543 : : front end. For "ObjC features" or "not C++" use the macros. */
544 : : extern c_language_kind c_language;
545 : :
546 : : #define c_dialect_cxx() ((c_language & clk_cxx) != 0)
547 : : #define c_dialect_objc() ((c_language & clk_objc) != 0)
548 : :
549 : : /* The various name of operator that appears in error messages. */
550 : : enum ref_operator {
551 : : /* NULL */
552 : : RO_NULL,
553 : : /* array indexing */
554 : : RO_ARRAY_INDEXING,
555 : : /* unary * */
556 : : RO_UNARY_STAR,
557 : : /* -> */
558 : : RO_ARROW,
559 : : /* implicit conversion */
560 : : RO_IMPLICIT_CONVERSION,
561 : : /* ->* */
562 : : RO_ARROW_STAR
563 : : };
564 : :
565 : : /* Information about a statement tree. */
566 : :
567 : : struct GTY(()) stmt_tree_s {
568 : : /* A stack of statement lists being collected. */
569 : : vec<tree, va_gc> *x_cur_stmt_list;
570 : :
571 : : /* In C++, Nonzero if we should treat statements as full
572 : : expressions. In particular, this variable is non-zero if at the
573 : : end of a statement we should destroy any temporaries created
574 : : during that statement. Similarly, if, at the end of a block, we
575 : : should destroy any local variables in this block. Normally, this
576 : : variable is nonzero, since those are the normal semantics of
577 : : C++.
578 : :
579 : : This flag has no effect in C. */
580 : : int stmts_are_full_exprs_p;
581 : : };
582 : :
583 : : typedef struct stmt_tree_s *stmt_tree;
584 : :
585 : : /* Global state pertinent to the current function. Some C dialects
586 : : extend this structure with additional fields. */
587 : :
588 : : struct GTY(()) c_language_function {
589 : : /* While we are parsing the function, this contains information
590 : : about the statement-tree that we are building. */
591 : : struct stmt_tree_s x_stmt_tree;
592 : :
593 : : /* Vector of locally defined typedefs, for
594 : : -Wunused-local-typedefs. */
595 : : vec<tree, va_gc> *local_typedefs;
596 : : };
597 : :
598 : : #define stmt_list_stack (current_stmt_tree ()->x_cur_stmt_list)
599 : :
600 : : /* When building a statement-tree, this is the current statement list
601 : : being collected. */
602 : : #define cur_stmt_list (stmt_list_stack->last ())
603 : :
604 : : #define building_stmt_list_p() (stmt_list_stack && !stmt_list_stack->is_empty())
605 : :
606 : : /* Language-specific hooks. */
607 : :
608 : : /* If non-NULL, this function is called after a precompile header file
609 : : is loaded. */
610 : : extern void (*lang_post_pch_load) (void);
611 : :
612 : : extern void push_file_scope (void);
613 : : extern void pop_file_scope (void);
614 : : extern stmt_tree current_stmt_tree (void);
615 : : extern tree push_stmt_list (void);
616 : : extern tree pop_stmt_list (tree);
617 : : extern tree add_stmt (tree);
618 : : extern void push_cleanup (tree, tree, bool);
619 : :
620 : : extern tree build_modify_expr (location_t, tree, tree, enum tree_code,
621 : : location_t, tree, tree);
622 : : extern tree build_indirect_ref (location_t, tree, ref_operator);
623 : :
624 : : extern bool has_c_linkage (const_tree decl);
625 : : extern bool c_decl_implicit (const_tree);
626 : :
627 : : /* Switches common to the C front ends. */
628 : :
629 : : /* Nonzero means don't output line number information. */
630 : :
631 : : extern char flag_no_line_commands;
632 : :
633 : : /* Nonzero causes -E output not to be done, but directives such as
634 : : #define that have side effects are still obeyed. */
635 : :
636 : : extern char flag_no_output;
637 : :
638 : : /* Nonzero means dump macros in some fashion; contains the 'D', 'M',
639 : : 'N' or 'U' of the command line switch. */
640 : :
641 : : extern char flag_dump_macros;
642 : :
643 : : /* Nonzero means pass #include lines through to the output. */
644 : :
645 : : extern char flag_dump_includes;
646 : :
647 : : /* Nonzero means process PCH files while preprocessing. */
648 : :
649 : : extern bool flag_pch_preprocess;
650 : :
651 : : /* The file name to which we should write a precompiled header, or
652 : : NULL if no header will be written in this compile. */
653 : :
654 : : extern const char *pch_file;
655 : :
656 : : /* Nonzero if an ISO standard was selected. It rejects macros in the
657 : : user's namespace. */
658 : :
659 : : extern int flag_iso;
660 : :
661 : : /* C/ObjC language option variables. */
662 : :
663 : :
664 : : /* Nonzero means allow type mismatches in conditional expressions;
665 : : just make their values `void'. */
666 : :
667 : : extern int flag_cond_mismatch;
668 : :
669 : : /* Nonzero means enable C89 Amendment 1 features. */
670 : :
671 : : extern int flag_isoc94;
672 : :
673 : : /* Nonzero means use the ISO C99 (or later) dialect of C. */
674 : :
675 : : extern int flag_isoc99;
676 : :
677 : : /* Nonzero means use the ISO C11 (or later) dialect of C. */
678 : :
679 : : extern int flag_isoc11;
680 : :
681 : : /* Nonzero means use the ISO C23 (or later) dialect of C. */
682 : :
683 : : extern int flag_isoc23;
684 : :
685 : : /* Nonzero means use the ISO C2Y (or later) dialect of C. */
686 : :
687 : : extern int flag_isoc2y;
688 : :
689 : : /* Nonzero means that we have builtin functions, and main is an int. */
690 : :
691 : : extern int flag_hosted;
692 : :
693 : : /* ObjC language option variables. */
694 : :
695 : :
696 : : /* Tells the compiler that this is a special run. Do not perform any
697 : : compiling, instead we are to test some platform dependent features
698 : : and output a C header file with appropriate definitions. */
699 : :
700 : : extern int print_struct_values;
701 : :
702 : : /* Tells the compiler what is the constant string class for ObjC. */
703 : :
704 : : extern const char *constant_string_class_name;
705 : :
706 : :
707 : : /* C++ language option variables. */
708 : :
709 : : /* The reference version of the ABI for -Wabi. */
710 : :
711 : : extern int warn_abi_version;
712 : :
713 : : /* Return TRUE if one of {flag_abi_version,flag_abi_compat_version} is
714 : : less than N and the other is at least N. */
715 : : #define abi_compat_version_crosses(N) \
716 : : (abi_version_at_least(N) \
717 : : != (flag_abi_compat_version == 0 \
718 : : || flag_abi_compat_version >= (N)))
719 : :
720 : : /* Return TRUE if one of {flag_abi_version,warn_abi_version} is
721 : : less than N and the other is at least N, for use by -Wabi. */
722 : : #define abi_version_crosses(N) \
723 : : (abi_version_at_least(N) \
724 : : != (warn_abi_version == 0 \
725 : : || warn_abi_version >= (N)))
726 : :
727 : : /* The supported C++ dialects. */
728 : :
729 : : enum cxx_dialect {
730 : : cxx_unset,
731 : : /* C++98 with TC1 */
732 : : cxx98,
733 : : cxx03 = cxx98,
734 : : /* C++11 */
735 : : cxx0x,
736 : : cxx11 = cxx0x,
737 : : /* C++14 */
738 : : cxx14,
739 : : /* C++17 */
740 : : cxx17,
741 : : /* C++20 */
742 : : cxx20,
743 : : /* C++23 */
744 : : cxx23,
745 : : /* C++26 */
746 : : cxx26
747 : : };
748 : :
749 : : /* The C++ dialect being used. C++98 is the default. */
750 : : extern enum cxx_dialect cxx_dialect;
751 : :
752 : : /* Maximum template instantiation depth. This limit is rather
753 : : arbitrary, but it exists to limit the time it takes to notice
754 : : excessively recursive template instantiations. */
755 : :
756 : : extern int max_tinst_depth;
757 : :
758 : : /* Nonzero means that we should not issue warnings about problems that
759 : : occur when the code is executed, because the code being processed
760 : : is not expected to be executed. This is set during parsing. This
761 : : is used for cases like sizeof() and "0 ? a : b". This is a count,
762 : : not a bool, because unexecuted expressions can nest. */
763 : :
764 : : extern int c_inhibit_evaluation_warnings;
765 : :
766 : : /* Depending on which phase of processing we are in, we may need
767 : : to prefer input_location to libcpp's locations. (Specifically,
768 : : after the C++ lexer is done lexing tokens, but prior to calling
769 : : cpp_finish (), we need to do so. */
770 : :
771 : : extern bool override_libcpp_locations;
772 : :
773 : : /* C types are partitioned into three subsets: object, function, and
774 : : incomplete types. */
775 : : #define C_TYPE_OBJECT_P(type) \
776 : : (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type))
777 : :
778 : : #define C_TYPE_INCOMPLETE_P(type) \
779 : : (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type) == 0)
780 : :
781 : : #define C_TYPE_FUNCTION_P(type) \
782 : : (TREE_CODE (type) == FUNCTION_TYPE)
783 : :
784 : : /* For convenience we define a single macro to identify the class of
785 : : object or incomplete types. */
786 : : #define C_TYPE_OBJECT_OR_INCOMPLETE_P(type) \
787 : : (!C_TYPE_FUNCTION_P (type))
788 : :
789 : : /* Return true if TYPE is a vector type that should be subject to the GNU
790 : : vector extensions (as opposed to a vector type that is used only for
791 : : the purposes of defining target-specific built-in functions). */
792 : :
793 : : inline bool
794 : 572316768 : gnu_vector_type_p (const_tree type)
795 : : {
796 : 572316768 : return VECTOR_TYPE_P (type) && !TYPE_INDIVISIBLE_P (type);
797 : : }
798 : :
799 : : struct visibility_flags
800 : : {
801 : : unsigned inpragma : 1; /* True when in #pragma GCC visibility. */
802 : : unsigned inlines_hidden : 1; /* True when -finlineshidden in effect. */
803 : : };
804 : :
805 : : /* These enumerators are possible types of unsafe conversions. */
806 : : enum conversion_safety {
807 : : /* The conversion is safe. */
808 : : SAFE_CONVERSION = 0,
809 : : /* Another type of conversion with problems. */
810 : : UNSAFE_OTHER,
811 : : /* Conversion between signed and unsigned integers. */
812 : : UNSAFE_SIGN,
813 : : /* Conversions that reduce the precision of reals including conversions
814 : : from reals to integers. */
815 : : UNSAFE_REAL,
816 : : /* Conversions from complex to reals or integers, that discard imaginary
817 : : component. */
818 : : UNSAFE_IMAGINARY
819 : : };
820 : :
821 : : /* Global visibility options. */
822 : : extern struct visibility_flags visibility_options;
823 : :
824 : : /* Attribute table common to the C front ends. */
825 : : extern const struct scoped_attribute_specs c_common_gnu_attribute_table;
826 : : extern const struct scoped_attribute_specs c_common_clang_attribute_table;
827 : : extern const struct scoped_attribute_specs c_common_format_attribute_table;
828 : :
829 : : /* Pointer to function to lazily generate the VAR_DECL for __FUNCTION__ etc.
830 : : ID is the identifier to use, NAME is the string.
831 : : TYPE_DEP indicates whether it depends on type of the function or not
832 : : (i.e. __PRETTY_FUNCTION__). */
833 : :
834 : : extern tree (*make_fname_decl) (location_t, tree, int);
835 : :
836 : : /* In c-decl.cc and cp/tree.cc. FIXME. */
837 : : extern void c_register_addr_space (const char *str, addr_space_t as);
838 : :
839 : : /* In c-common.cc. */
840 : : extern bool in_late_binary_op;
841 : : extern const char *c_addr_space_name (addr_space_t as);
842 : : extern tree identifier_global_value (tree);
843 : : extern tree identifier_global_tag (tree);
844 : : extern int names_builtin_p (const char *);
845 : : extern tree c_linkage_bindings (tree);
846 : : extern void record_builtin_type (enum rid, const char *, tree);
847 : : extern void start_fname_decls (void);
848 : : extern void finish_fname_decls (void);
849 : : extern const char *fname_as_string (int);
850 : : extern tree fname_decl (location_t, unsigned, tree);
851 : :
852 : : extern int check_user_alignment (const_tree, bool, bool);
853 : : extern bool check_function_arguments (location_t loc, const_tree, const_tree,
854 : : int, tree *, vec<location_t> *,
855 : : bool (*comp_types) (tree, tree));
856 : : extern void check_function_arguments_recurse (void (*)
857 : : (void *, tree,
858 : : unsigned HOST_WIDE_INT),
859 : : void *, tree,
860 : : unsigned HOST_WIDE_INT,
861 : : opt_code);
862 : : extern bool check_builtin_function_arguments (location_t, vec<location_t>, tree,
863 : : tree, int, tree *, bool = true);
864 : : extern void check_function_format (const_tree, tree, int, tree *,
865 : : vec<location_t> *,
866 : : bool (*comp_types) (tree, tree));
867 : : extern bool attribute_fallthrough_p (tree);
868 : : extern tree handle_format_attribute (tree *, tree, tree, int, bool *);
869 : : extern tree handle_format_arg_attribute (tree *, tree, tree, int, bool *);
870 : : extern tree handle_unsequenced_attribute (tree *, tree, tree, int, bool *);
871 : : extern tree handle_reproducible_attribute (tree *, tree, tree, int, bool *);
872 : : extern bool c_common_handle_option (size_t, const char *, HOST_WIDE_INT, int,
873 : : location_t,
874 : : const struct cl_option_handlers *);
875 : : extern bool default_handle_c_option (size_t, const char *, int);
876 : : extern tree c_common_type_for_mode (machine_mode, int);
877 : : extern tree c_common_type_for_size (unsigned int, int);
878 : : extern tree c_common_fixed_point_type_for_size (unsigned int, unsigned int,
879 : : int, int);
880 : : extern tree c_common_unsigned_type (tree);
881 : : extern tree c_common_signed_type (tree);
882 : : extern tree c_common_signed_or_unsigned_type (int, tree);
883 : : extern void c_common_init_ts (void);
884 : : extern tree c_build_bitfield_integer_type (unsigned HOST_WIDE_INT, int);
885 : : extern enum conversion_safety unsafe_conversion_p (tree, tree, tree, bool);
886 : : extern bool decl_with_nonnull_addr_p (const_tree);
887 : : extern tree c_fully_fold (tree, bool, bool *, bool = false);
888 : : extern tree c_wrap_maybe_const (tree, bool);
889 : : extern tree c_common_truthvalue_conversion (location_t, tree);
890 : : extern void c_apply_type_quals_to_decl (int, tree);
891 : : extern tree c_sizeof_or_alignof_type (location_t, tree, bool, bool, int);
892 : : extern tree c_alignof_expr (location_t, tree);
893 : : /* Print an error message for invalid operands to arith operation CODE.
894 : : NOP_EXPR is used as a special case (see truthvalue_conversion). */
895 : : extern void binary_op_error (rich_location *, enum tree_code, tree, tree);
896 : : extern tree fix_string_type (tree);
897 : : extern tree convert_and_check (location_t, tree, tree, bool = false);
898 : : extern bool c_determine_visibility (tree);
899 : : extern bool vector_types_compatible_elements_p (tree, tree);
900 : : extern void mark_valid_location_for_stdc_pragma (bool);
901 : : extern bool valid_location_for_stdc_pragma_p (void);
902 : : extern void set_float_const_decimal64 (void);
903 : : extern void clear_float_const_decimal64 (void);
904 : : extern bool float_const_decimal64_p (void);
905 : :
906 : : extern bool keyword_begins_type_specifier (enum rid);
907 : : extern bool keyword_is_storage_class_specifier (enum rid);
908 : : extern bool keyword_is_type_qualifier (enum rid);
909 : : extern bool keyword_is_decl_specifier (enum rid);
910 : : extern unsigned max_align_t_align (void);
911 : : extern bool cxx_fundamental_alignment_p (unsigned);
912 : : extern bool pointer_to_zero_sized_aggr_p (tree);
913 : : extern bool bool_promoted_to_int_p (tree);
914 : : extern tree fold_for_warn (tree);
915 : : extern tree c_common_get_narrower (tree, int *);
916 : : extern bool get_attribute_operand (tree, unsigned HOST_WIDE_INT *);
917 : : extern void c_common_finalize_early_debug (void);
918 : : extern bool c_flexible_array_member_type_p (const_tree);
919 : : extern unsigned int c_strict_flex_array_level_of (tree);
920 : : extern bool c_option_is_from_cpp_diagnostics (int);
921 : : extern tree c_hardbool_type_attr_1 (tree, tree *, tree *);
922 : :
923 : : /* Used by convert_and_check; in front ends. */
924 : : extern tree convert_init (tree, tree);
925 : :
926 : : #define c_sizeof(LOC, T) c_sizeof_or_alignof_type (LOC, T, true, false, 1)
927 : : #define c_alignof(LOC, T) c_sizeof_or_alignof_type (LOC, T, false, false, 1)
928 : :
929 : : /* Subroutine of build_binary_op, used for certain operations. */
930 : : extern tree shorten_binary_op (tree result_type, tree op0, tree op1, bool bitwise);
931 : :
932 : : /* Return true if division or modulo op0 / op1 or op0 % op1 may be shortened.
933 : : We can shorten only if we can guarantee that op0 is not signed integral
934 : : minimum or op1 is not -1, because e.g. (long long) INT_MIN / -1 is
935 : : well defined INT_MAX + 1LL if long long is wider than int, but INT_MIN / -1
936 : : is UB. */
937 : : inline bool
938 : 4935314 : may_shorten_divmod (tree op0, tree op1)
939 : : {
940 : 4935314 : tree type0 = TREE_TYPE (op0);
941 : 4935314 : if (TYPE_UNSIGNED (type0))
942 : : return true;
943 : : /* A cast from narrower unsigned won't be signed integral minimum,
944 : : but cast from same or wider precision unsigned could be. */
945 : 2717506 : if (TREE_CODE (op0) == NOP_EXPR
946 : 1101821 : && INTEGRAL_TYPE_P (TREE_TYPE (TREE_OPERAND (op0, 0)))
947 : 1101816 : && TYPE_UNSIGNED (TREE_TYPE (TREE_OPERAND (op0, 0)))
948 : 2720743 : && (TYPE_PRECISION (TREE_TYPE (TREE_OPERAND (op0, 0)))
949 : 3237 : < TYPE_PRECISION (type0)))
950 : : return true;
951 : 2714868 : if (TREE_CODE (op1) == INTEGER_CST && !integer_all_onesp (op1))
952 : : return true;
953 : : return false;
954 : : }
955 : :
956 : : /* Subroutine of build_binary_op, used for comparison operations.
957 : : See if the operands have both been converted from subword integer types
958 : : and, if so, perhaps change them both back to their original type. */
959 : : extern tree shorten_compare (location_t, tree *, tree *, tree *,
960 : : enum tree_code *);
961 : :
962 : : extern tree pointer_int_sum (location_t, enum tree_code, tree, tree,
963 : : bool = true);
964 : :
965 : : /* Add qualifiers to a type, in the fashion for C. */
966 : : extern tree c_build_qualified_type (tree, int, tree = NULL_TREE, size_t = 0);
967 : :
968 : : /* Build tree nodes and builtin functions common to both C and C++ language
969 : : frontends. */
970 : : extern void c_common_nodes_and_builtins (void);
971 : :
972 : : extern void disable_builtin_function (const char *);
973 : :
974 : : extern void set_compound_literal_name (tree decl);
975 : :
976 : : extern tree build_va_arg (location_t, tree, tree);
977 : :
978 : : extern const unsigned int c_family_lang_mask;
979 : : extern unsigned int c_common_option_lang_mask (void);
980 : : extern void c_common_diagnostics_set_defaults (diagnostic_context *);
981 : : extern bool c_common_complain_wrong_lang_p (const struct cl_option *);
982 : : extern void c_common_init_options_struct (struct gcc_options *);
983 : : extern void c_common_init_options (unsigned int, struct cl_decoded_option *);
984 : : extern bool c_common_post_options (const char **);
985 : : extern bool c_common_init (void);
986 : : extern void c_common_finish (void);
987 : : extern void c_common_parse_file (void);
988 : : extern alias_set_type c_common_get_alias_set (tree);
989 : : extern void c_register_builtin_type (tree, const char*);
990 : : extern bool c_promoting_integer_type_p (const_tree);
991 : : extern bool self_promoting_args_p (const_tree);
992 : : extern tree strip_pointer_operator (tree);
993 : : extern tree strip_pointer_or_array_types (tree);
994 : : extern HOST_WIDE_INT c_common_to_target_charset (HOST_WIDE_INT);
995 : :
996 : : /* This is the basic parsing function. */
997 : : extern void c_parse_file (void);
998 : :
999 : : extern void c_parse_final_cleanups (void);
1000 : :
1001 : : /* This initializes for preprocess-only mode. */
1002 : : extern void c_init_preprocess (void);
1003 : :
1004 : : /* These macros provide convenient access to the various _STMT nodes. */
1005 : :
1006 : : /* Nonzero if a given STATEMENT_LIST represents the outermost binding
1007 : : if a statement expression. */
1008 : : #define STATEMENT_LIST_STMT_EXPR(NODE) \
1009 : : TREE_LANG_FLAG_1 (STATEMENT_LIST_CHECK (NODE))
1010 : :
1011 : : /* Nonzero if a label has been added to the statement list. */
1012 : : #define STATEMENT_LIST_HAS_LABEL(NODE) \
1013 : : TREE_LANG_FLAG_3 (STATEMENT_LIST_CHECK (NODE))
1014 : :
1015 : : /* C_MAYBE_CONST_EXPR accessors. */
1016 : : #define C_MAYBE_CONST_EXPR_PRE(NODE) \
1017 : : TREE_OPERAND (C_MAYBE_CONST_EXPR_CHECK (NODE), 0)
1018 : : #define C_MAYBE_CONST_EXPR_EXPR(NODE) \
1019 : : TREE_OPERAND (C_MAYBE_CONST_EXPR_CHECK (NODE), 1)
1020 : : #define C_MAYBE_CONST_EXPR_INT_OPERANDS(NODE) \
1021 : : TREE_LANG_FLAG_0 (C_MAYBE_CONST_EXPR_CHECK (NODE))
1022 : : #define C_MAYBE_CONST_EXPR_NON_CONST(NODE) \
1023 : : TREE_LANG_FLAG_1 (C_MAYBE_CONST_EXPR_CHECK (NODE))
1024 : : #define EXPR_INT_CONST_OPERANDS(EXPR) \
1025 : : (INTEGRAL_TYPE_P (TREE_TYPE (EXPR)) \
1026 : : && (TREE_CODE (EXPR) == INTEGER_CST \
1027 : : || (TREE_CODE (EXPR) == C_MAYBE_CONST_EXPR \
1028 : : && C_MAYBE_CONST_EXPR_INT_OPERANDS (EXPR))))
1029 : :
1030 : : /* In a FIELD_DECL, nonzero if the decl was originally a bitfield. */
1031 : : #define DECL_C_BIT_FIELD(NODE) \
1032 : : (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) == 1)
1033 : : #define SET_DECL_C_BIT_FIELD(NODE) \
1034 : : (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 1)
1035 : : #define CLEAR_DECL_C_BIT_FIELD(NODE) \
1036 : : (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 0)
1037 : :
1038 : : /* True if the decl was an unnamed bitfield. */
1039 : : #define DECL_UNNAMED_BIT_FIELD(NODE) \
1040 : : (DECL_C_BIT_FIELD (NODE) && !DECL_NAME (NODE))
1041 : :
1042 : : /* True iff TYPE is cv decltype(nullptr). */
1043 : : #define NULLPTR_TYPE_P(TYPE) (TREE_CODE (TYPE) == NULLPTR_TYPE)
1044 : :
1045 : : /* Returns the underlying type of the given enumeration type. The
1046 : : underlying type is determined in different ways, depending on the
1047 : : properties of the enum:
1048 : :
1049 : : - In C++0x or C23, the underlying type can be explicitly specified, e.g.,
1050 : :
1051 : : enum E1 : char { ... } // underlying type is char
1052 : :
1053 : : - In a C++0x scoped enumeration, the underlying type is int
1054 : : unless otherwises specified:
1055 : :
1056 : : enum class E2 { ... } // underlying type is int
1057 : :
1058 : : - Otherwise, the underlying type is determined based on the
1059 : : values of the enumerators. In this case, the
1060 : : ENUM_UNDERLYING_TYPE will not be set until after the definition
1061 : : of the enumeration is completed by finish_enum. */
1062 : : #define ENUM_UNDERLYING_TYPE(TYPE) \
1063 : : TREE_TYPE (ENUMERAL_TYPE_CHECK (TYPE))
1064 : :
1065 : : /* Determines whether an ENUMERAL_TYPE has an explicit
1066 : : underlying type. */
1067 : : #define ENUM_FIXED_UNDERLYING_TYPE_P(NODE) (TYPE_LANG_FLAG_5 (NODE))
1068 : :
1069 : : extern tree do_case (location_t, tree, tree, tree);
1070 : : extern tree build_stmt (location_t, enum tree_code, ...);
1071 : : extern tree build_real_imag_expr (location_t, enum tree_code, tree);
1072 : :
1073 : : /* These functions must be defined by each front-end which implements
1074 : : a variant of the C language. They are used in c-common.cc. */
1075 : :
1076 : : extern tree build_unary_op (location_t, enum tree_code, tree, bool);
1077 : : extern tree build_binary_op (location_t, enum tree_code, tree, tree, bool);
1078 : : extern tree perform_integral_promotions (tree);
1079 : :
1080 : : /* These functions must be defined by each front-end which implements
1081 : : a variant of the C language. They are used by port files. */
1082 : :
1083 : : extern tree default_conversion (tree);
1084 : :
1085 : : /* Given two integer or real types, return the type for their sum.
1086 : : Given two compatible ANSI C types, returns the merged type. */
1087 : :
1088 : : extern tree common_type (tree, tree);
1089 : :
1090 : : extern tree decl_constant_value (tree);
1091 : :
1092 : : /* Handle increment and decrement of boolean types. */
1093 : : extern tree boolean_increment (enum tree_code, tree);
1094 : :
1095 : : extern int case_compare (splay_tree_key, splay_tree_key);
1096 : :
1097 : : extern tree c_add_case_label (location_t, splay_tree, tree, tree, tree,
1098 : : tree = NULL_TREE);
1099 : : extern bool c_switch_covers_all_cases_p (splay_tree, tree);
1100 : : extern bool c_block_may_fallthru (const_tree);
1101 : :
1102 : : extern tree build_function_call (location_t, tree, tree);
1103 : :
1104 : : extern tree build_function_call_vec (location_t, vec<location_t>, tree,
1105 : : vec<tree, va_gc> *, vec<tree, va_gc> *,
1106 : : tree = NULL_TREE);
1107 : :
1108 : : extern tree resolve_overloaded_builtin (location_t, tree, vec<tree, va_gc> *,
1109 : : bool = true);
1110 : :
1111 : : extern tree finish_label_address_expr (tree, location_t);
1112 : :
1113 : : /* Same function prototype, but the C and C++ front ends have
1114 : : different implementations. Used in c-common.cc. */
1115 : : extern tree lookup_label (tree);
1116 : : extern tree lookup_name (tree);
1117 : : extern bool lvalue_p (const_tree);
1118 : : extern int maybe_adjust_arg_pos_for_attribute (const_tree);
1119 : : extern bool instantiation_dependent_expression_p (tree);
1120 : :
1121 : : extern bool vector_targets_convertible_p (const_tree t1, const_tree t2);
1122 : : extern bool vector_types_convertible_p (const_tree t1, const_tree t2, bool emit_lax_note);
1123 : : extern tree c_build_vec_perm_expr (location_t, tree, tree, tree, bool = true);
1124 : : extern tree c_build_shufflevector (location_t, tree, tree,
1125 : : const vec<tree> &, bool = true);
1126 : : extern tree c_build_vec_convert (location_t, tree, location_t, tree, bool = true);
1127 : :
1128 : : extern void init_c_lex (void);
1129 : :
1130 : : extern void c_cpp_builtins (cpp_reader *);
1131 : : extern void c_cpp_builtins_optimize_pragma (cpp_reader *, tree, tree);
1132 : : extern bool c_cpp_diagnostic (cpp_reader *, enum cpp_diagnostic_level,
1133 : : enum cpp_warning_reason, rich_location *,
1134 : : const char *, va_list *)
1135 : : ATTRIBUTE_GCC_DIAG(5,0);
1136 : : extern int c_common_has_attribute (cpp_reader *, bool);
1137 : : extern int c_common_has_builtin (cpp_reader *);
1138 : : extern int c_common_has_feature (cpp_reader *, bool);
1139 : :
1140 : : /* Implemented by each front end in *-lang.cc. */
1141 : : extern void c_family_register_lang_features ();
1142 : :
1143 : : /* Implemented in c-family/c-common.cc. */
1144 : : extern void c_common_register_feature (const char *, bool);
1145 : : extern bool has_feature_p (const char *, bool);
1146 : :
1147 : : extern bool parse_optimize_options (tree, bool);
1148 : :
1149 : : /* Positive if an implicit `extern "C"' scope has just been entered;
1150 : : negative if such a scope has just been exited. */
1151 : : extern GTY(()) int pending_lang_change;
1152 : :
1153 : : /* Information recorded about each file examined during compilation. */
1154 : :
1155 : : struct c_fileinfo
1156 : : {
1157 : : int time; /* Time spent in the file. */
1158 : :
1159 : : /* Flags used only by C++.
1160 : : INTERFACE_ONLY nonzero means that we are in an "interface" section
1161 : : of the compiler. INTERFACE_UNKNOWN nonzero means we cannot trust
1162 : : the value of INTERFACE_ONLY. If INTERFACE_UNKNOWN is zero and
1163 : : INTERFACE_ONLY is zero, it means that we are responsible for
1164 : : exporting definitions that others might need. */
1165 : : short interface_only;
1166 : : short interface_unknown;
1167 : : };
1168 : :
1169 : : struct c_fileinfo *get_fileinfo (const char *);
1170 : : extern void dump_time_statistics (void);
1171 : :
1172 : : extern bool c_dump_tree (void *, tree);
1173 : :
1174 : : extern void verify_sequence_points (tree);
1175 : :
1176 : : extern tree fold_offsetof (tree, tree = size_type_node,
1177 : : tree_code ctx = ERROR_MARK);
1178 : :
1179 : : extern int complete_array_type (tree *, tree, bool);
1180 : : extern void complete_flexible_array_elts (tree);
1181 : :
1182 : : extern tree builtin_type_for_size (int, bool);
1183 : :
1184 : : extern void c_common_mark_addressable_vec (tree);
1185 : :
1186 : : extern void set_underlying_type (tree);
1187 : : extern bool user_facing_original_type_p (const_tree);
1188 : : extern void record_types_used_by_current_var_decl (tree);
1189 : : extern vec<tree, va_gc> *make_tree_vector (void);
1190 : : extern void release_tree_vector (vec<tree, va_gc> *);
1191 : : extern vec<tree, va_gc> *make_tree_vector_single (tree);
1192 : : extern vec<tree, va_gc> *make_tree_vector_from_list (tree);
1193 : : extern vec<tree, va_gc> *make_tree_vector_from_ctor (tree);
1194 : : extern vec<tree, va_gc> *make_tree_vector_copy (const vec<tree, va_gc> *);
1195 : :
1196 : : /* Used for communication between c_common_type_for_mode and
1197 : : c_register_builtin_type. */
1198 : : extern GTY(()) tree registered_builtin_types;
1199 : :
1200 : : /* Read SOURCE_DATE_EPOCH from environment to have a deterministic
1201 : : timestamp to replace embedded current dates to get reproducible
1202 : : results. Returns -1 if SOURCE_DATE_EPOCH is not defined. */
1203 : : extern time_t cb_get_source_date_epoch (cpp_reader *pfile);
1204 : :
1205 : : /* The value (as a unix timestamp) corresponds to date
1206 : : "Dec 31 9999 23:59:59 UTC", which is the latest date that __DATE__ and
1207 : : __TIME__ can store. */
1208 : : #define MAX_SOURCE_DATE_EPOCH HOST_WIDE_INT_C (253402300799)
1209 : :
1210 : : /* Callback for libcpp for offering spelling suggestions for misspelled
1211 : : directives. */
1212 : : extern const char *cb_get_suggestion (cpp_reader *, const char *,
1213 : : const char *const *);
1214 : :
1215 : : extern GTY(()) string_concat_db *g_string_concat_db;
1216 : :
1217 : : class substring_loc;
1218 : : extern const char *c_get_substring_location (const substring_loc &substr_loc,
1219 : : location_t *out_loc);
1220 : :
1221 : : /* In c-gimplify.cc. */
1222 : : typedef hash_map<tree, tree_pair,
1223 : : simple_hashmap_traits<tree_decl_hash,
1224 : : tree_pair>> bc_hash_map_t;
1225 : : typedef struct bc_state
1226 : : {
1227 : : tree bc_label[2];
1228 : : bc_hash_map_t *bc_hash_map;
1229 : : } bc_state_t;
1230 : : extern void save_bc_state (bc_state_t *);
1231 : : extern void restore_bc_state (bc_state_t *);
1232 : : extern tree c_genericize_control_stmt (tree *, int *, void *,
1233 : : walk_tree_fn, walk_tree_lh);
1234 : : extern void c_genericize (tree);
1235 : : extern int c_gimplify_expr (tree *, gimple_seq *, gimple_seq *);
1236 : : extern tree c_build_bind_expr (location_t, tree, tree);
1237 : :
1238 : : /* In c-lex.cc. */
1239 : : extern enum cpp_ttype
1240 : : conflict_marker_get_final_tok_kind (enum cpp_ttype tok1_kind);
1241 : :
1242 : : /* In c-pch.cc */
1243 : : extern void pch_init (void);
1244 : : extern void pch_cpp_save_state (void);
1245 : : extern int c_common_valid_pch (cpp_reader *pfile, const char *name, int fd);
1246 : : extern void c_common_read_pch (cpp_reader *pfile, const char *name, int fd,
1247 : : const char *orig);
1248 : : extern void c_common_write_pch (void);
1249 : : extern void c_common_no_more_pch (void);
1250 : : extern void c_common_pch_pragma (cpp_reader *pfile, const char *);
1251 : :
1252 : : /* In *-checksum.c */
1253 : : extern const unsigned char executable_checksum[16];
1254 : :
1255 : : /* In c-cppbuiltin.cc */
1256 : : extern void builtin_define_std (const char *macro);
1257 : : extern void builtin_define_with_value (const char *, const char *, int);
1258 : : extern void builtin_define_with_int_value (const char *, HOST_WIDE_INT);
1259 : : extern void builtin_define_type_sizeof (const char *, tree);
1260 : : extern void c_stddef_cpp_builtins (void);
1261 : : extern void fe_file_change (const line_map_ordinary *);
1262 : : extern void c_parse_error (const char *, enum cpp_ttype, tree, unsigned char,
1263 : : rich_location *richloc);
1264 : : extern diagnostic_option_id get_option_for_builtin_define (const char *macro_name);
1265 : :
1266 : : /* In c-ppoutput.cc */
1267 : : extern void init_pp_output (FILE *);
1268 : : extern void preprocess_file (cpp_reader *);
1269 : : extern void pp_file_change (const line_map_ordinary *);
1270 : : extern void pp_dir_change (cpp_reader *, const char *);
1271 : : extern bool check_missing_format_attribute (tree, tree);
1272 : : extern void c_pp_stream_token (cpp_reader *, const cpp_token *, location_t loc);
1273 : :
1274 : : /* In c-omp.cc */
1275 : : typedef wide_int_bitmask omp_clause_mask;
1276 : :
1277 : : #define OMP_CLAUSE_MASK_1 omp_clause_mask (1)
1278 : :
1279 : : enum c_omp_clause_split
1280 : : {
1281 : : C_OMP_CLAUSE_SPLIT_TARGET = 0,
1282 : : C_OMP_CLAUSE_SPLIT_TEAMS,
1283 : : C_OMP_CLAUSE_SPLIT_DISTRIBUTE,
1284 : : C_OMP_CLAUSE_SPLIT_PARALLEL,
1285 : : C_OMP_CLAUSE_SPLIT_FOR,
1286 : : C_OMP_CLAUSE_SPLIT_SIMD,
1287 : : C_OMP_CLAUSE_SPLIT_COUNT,
1288 : : C_OMP_CLAUSE_SPLIT_SECTIONS = C_OMP_CLAUSE_SPLIT_FOR,
1289 : : C_OMP_CLAUSE_SPLIT_TASKLOOP = C_OMP_CLAUSE_SPLIT_FOR,
1290 : : C_OMP_CLAUSE_SPLIT_LOOP = C_OMP_CLAUSE_SPLIT_FOR,
1291 : : C_OMP_CLAUSE_SPLIT_MASKED = C_OMP_CLAUSE_SPLIT_DISTRIBUTE
1292 : : };
1293 : :
1294 : : enum c_omp_region_type
1295 : : {
1296 : : C_ORT_OMP = 1 << 0,
1297 : : C_ORT_ACC = 1 << 1,
1298 : : C_ORT_DECLARE_SIMD = 1 << 2,
1299 : : C_ORT_TARGET = 1 << 3,
1300 : : C_ORT_EXIT_DATA = 1 << 4,
1301 : : C_ORT_INTEROP = 1 << 5,
1302 : : C_ORT_OMP_DECLARE_SIMD = C_ORT_OMP | C_ORT_DECLARE_SIMD,
1303 : : C_ORT_OMP_TARGET = C_ORT_OMP | C_ORT_TARGET,
1304 : : C_ORT_OMP_EXIT_DATA = C_ORT_OMP | C_ORT_EXIT_DATA,
1305 : : C_ORT_OMP_INTEROP = C_ORT_OMP | C_ORT_INTEROP,
1306 : : C_ORT_ACC_TARGET = C_ORT_ACC | C_ORT_TARGET
1307 : : };
1308 : :
1309 : : extern tree c_finish_omp_master (location_t, tree);
1310 : : extern tree c_finish_omp_masked (location_t, tree, tree);
1311 : : extern tree c_finish_omp_taskgroup (location_t, tree, tree);
1312 : : extern tree c_finish_omp_critical (location_t, tree, tree, tree);
1313 : : extern tree c_finish_omp_ordered (location_t, tree, tree);
1314 : : extern void c_finish_omp_barrier (location_t);
1315 : : extern tree c_finish_omp_atomic (location_t, enum tree_code, enum tree_code,
1316 : : tree, tree, tree, tree, tree, tree, bool,
1317 : : enum omp_memory_order, bool, bool = false);
1318 : : extern bool c_omp_interop_t_p (tree);
1319 : : extern bool c_omp_depend_t_p (tree);
1320 : : extern void c_finish_omp_depobj (location_t, tree, enum omp_clause_depend_kind,
1321 : : tree);
1322 : : extern void c_finish_omp_flush (location_t, int);
1323 : : extern void c_finish_omp_taskwait (location_t);
1324 : : extern void c_finish_omp_taskyield (location_t);
1325 : : extern tree c_finish_omp_for (location_t, enum tree_code, tree, tree, tree,
1326 : : tree, tree, tree, tree, bool);
1327 : : extern int c_omp_find_generated_loop (tree &, int, walk_tree_lh);
1328 : : extern bool c_omp_check_loop_iv (tree, tree, walk_tree_lh);
1329 : : extern bool c_omp_check_loop_iv_exprs (location_t, enum tree_code, tree, int,
1330 : : tree, tree, tree, walk_tree_lh);
1331 : : extern bool c_omp_check_loop_binding_exprs (tree, vec<tree> *);
1332 : : extern tree c_finish_oacc_wait (location_t, tree, tree);
1333 : : extern tree c_oacc_split_loop_clauses (tree, tree *, bool);
1334 : : extern void c_omp_split_clauses (location_t, enum tree_code, omp_clause_mask,
1335 : : tree, tree *);
1336 : : extern tree c_omp_declare_simd_clauses_to_numbers (tree, tree);
1337 : : extern void c_omp_declare_simd_clauses_to_decls (tree, tree);
1338 : : extern bool c_omp_predefined_variable (tree);
1339 : : extern enum omp_clause_default_kind c_omp_predetermined_sharing (tree);
1340 : : extern enum omp_clause_defaultmap_kind c_omp_predetermined_mapping (tree);
1341 : : extern tree c_omp_check_context_selector (location_t, tree);
1342 : : extern void c_omp_mark_declare_variant (location_t, tree, tree);
1343 : : extern void c_omp_adjust_map_clauses (tree, bool);
1344 : :
1345 : : namespace omp_addr_tokenizer { struct omp_addr_token; }
1346 : : typedef omp_addr_tokenizer::omp_addr_token omp_addr_token;
1347 : :
1348 : : class c_omp_address_inspector
1349 : : {
1350 : : location_t loc;
1351 : : tree root_term;
1352 : : bool indirections;
1353 : : int map_supported;
1354 : :
1355 : : protected:
1356 : : tree orig;
1357 : :
1358 : : public:
1359 : 42461 : c_omp_address_inspector (location_t loc, tree t)
1360 : 42461 : : loc (loc), root_term (NULL_TREE), indirections (false),
1361 : 42461 : map_supported (-1), orig (t)
1362 : : {
1363 : : }
1364 : :
1365 : 30930 : ~c_omp_address_inspector ()
1366 : : {
1367 : 11531 : }
1368 : :
1369 : 45958 : virtual bool processing_template_decl_p ()
1370 : : {
1371 : 45958 : return false;
1372 : : }
1373 : :
1374 : 0 : virtual void emit_unmappable_type_notes (tree)
1375 : : {
1376 : 0 : }
1377 : :
1378 : 0 : virtual tree convert_from_reference (tree)
1379 : : {
1380 : 0 : gcc_unreachable ();
1381 : : }
1382 : :
1383 : 19 : virtual tree build_array_ref (location_t loc, tree arr, tree idx)
1384 : : {
1385 : 19 : tree eltype = TREE_TYPE (TREE_TYPE (arr));
1386 : 19 : return build4_loc (loc, ARRAY_REF, eltype, arr, idx, NULL_TREE,
1387 : 19 : NULL_TREE);
1388 : : }
1389 : :
1390 : : virtual bool check_clause (tree);
1391 : : tree get_root_term (bool);
1392 : :
1393 : : tree unconverted_ref_origin ();
1394 : : bool component_access_p ();
1395 : :
1396 : : bool map_supported_p ();
1397 : :
1398 : : tree get_origin (tree);
1399 : : tree maybe_unconvert_ref (tree);
1400 : :
1401 : : bool maybe_zero_length_array_section (tree);
1402 : :
1403 : : tree expand_array_base (tree, vec<omp_addr_token *> &, tree, unsigned *,
1404 : : c_omp_region_type);
1405 : : tree expand_component_selector (tree, vec<omp_addr_token *> &, tree,
1406 : : unsigned *, c_omp_region_type);
1407 : : tree expand_map_clause (tree, tree, vec<omp_addr_token *> &,
1408 : : c_omp_region_type);
1409 : : };
1410 : :
1411 : : enum c_omp_directive_kind {
1412 : : C_OMP_DIR_STANDALONE,
1413 : : C_OMP_DIR_CONSTRUCT,
1414 : : C_OMP_DIR_DECLARATIVE,
1415 : : C_OMP_DIR_UTILITY,
1416 : : C_OMP_DIR_INFORMATIONAL
1417 : : };
1418 : :
1419 : : struct c_omp_directive {
1420 : : const char *first, *second, *third;
1421 : : unsigned int id;
1422 : : enum c_omp_directive_kind kind;
1423 : : bool simd;
1424 : : };
1425 : :
1426 : : extern const struct c_omp_directive c_omp_directives[];
1427 : : extern const struct c_omp_directive *c_omp_categorize_directive (const char *,
1428 : : const char *,
1429 : : const char *);
1430 : :
1431 : : /* Return next tree in the chain for chain_next walking of tree nodes. */
1432 : : inline tree
1433 : 67627273666 : c_tree_chain_next (tree t)
1434 : : {
1435 : : /* TREE_CHAIN of a type is TYPE_STUB_DECL, which is different
1436 : : kind of object, never a long chain of nodes. Prefer
1437 : : TYPE_NEXT_VARIANT for types. */
1438 : 67627273666 : if (CODE_CONTAINS_STRUCT (TREE_CODE (t), TS_TYPE_COMMON))
1439 : 7884314970 : return TYPE_NEXT_VARIANT (t);
1440 : : /* Otherwise, if there is TREE_CHAIN, return it. */
1441 : 59742958696 : if (CODE_CONTAINS_STRUCT (TREE_CODE (t), TS_COMMON))
1442 : 37484334006 : return TREE_CHAIN (t);
1443 : : return NULL;
1444 : : }
1445 : :
1446 : : /* Return the hardbool attribute associated with TYPE, if there is one, provided
1447 : : that TYPE looks like an enumeral type that might have been set up by
1448 : : handle_hardbool_attribute. Return NULL otherwise.
1449 : :
1450 : : If FALSE_VALUE or TRUE_VALUE are non-NULL and TYPE is a hardened boolean
1451 : : type, store the corresponding representation values. */
1452 : : static inline tree
1453 : 545483518 : c_hardbool_type_attr (tree type,
1454 : : tree *false_value = NULL, tree *true_value = NULL)
1455 : : {
1456 : 545483518 : if (TREE_CODE (type) != ENUMERAL_TYPE
1457 : 545483518 : || TYPE_LANG_SPECIFIC (type))
1458 : : return NULL_TREE;
1459 : :
1460 : 36854 : return c_hardbool_type_attr_1 (type, false_value, true_value);
1461 : : }
1462 : :
1463 : : /* Mask used by tm_stmt_attr. */
1464 : : #define TM_STMT_ATTR_OUTER 2
1465 : : #define TM_STMT_ATTR_ATOMIC 4
1466 : : #define TM_STMT_ATTR_RELAXED 8
1467 : :
1468 : : /* Mask used by tm_attr_to_mask and tm_mask_to_attr. Note that these
1469 : : are ordered specifically such that more restrictive attributes are
1470 : : at lower bit positions. This fact is known by the C++ tm attribute
1471 : : inheritance code such that least bit extraction (mask & -mask) results
1472 : : in the most restrictive attribute. */
1473 : : #define TM_ATTR_SAFE 1
1474 : : #define TM_ATTR_CALLABLE 2
1475 : : #define TM_ATTR_PURE 4
1476 : : #define TM_ATTR_IRREVOCABLE 8
1477 : : #define TM_ATTR_MAY_CANCEL_OUTER 16
1478 : :
1479 : : /* A suffix-identifier value doublet that represents user-defined literals
1480 : : for C++-0x. */
1481 : : enum overflow_type {
1482 : : OT_UNDERFLOW = -1,
1483 : : OT_NONE,
1484 : : OT_OVERFLOW
1485 : : };
1486 : :
1487 : : struct GTY(()) tree_userdef_literal {
1488 : : struct tree_base base;
1489 : : tree suffix_id;
1490 : : tree value;
1491 : : tree num_string;
1492 : : enum overflow_type overflow;
1493 : : };
1494 : :
1495 : : #define USERDEF_LITERAL_SUFFIX_ID(NODE) \
1496 : : (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->suffix_id)
1497 : :
1498 : : #define USERDEF_LITERAL_VALUE(NODE) \
1499 : : (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->value)
1500 : :
1501 : : #define USERDEF_LITERAL_OVERFLOW(NODE) \
1502 : : (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->overflow)
1503 : :
1504 : : #define USERDEF_LITERAL_NUM_STRING(NODE) \
1505 : : (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->num_string)
1506 : :
1507 : : #define USERDEF_LITERAL_TYPE(NODE) \
1508 : : (TREE_TYPE (USERDEF_LITERAL_VALUE (NODE)))
1509 : :
1510 : : extern tree build_userdef_literal (tree suffix_id, tree value,
1511 : : enum overflow_type overflow,
1512 : : tree num_string);
1513 : :
1514 : :
1515 : : /* WHILE_STMT accessors. These give access to the condition of the
1516 : : while statement, the body and name of the while statement, respectively. */
1517 : : #define WHILE_COND(NODE) TREE_OPERAND (WHILE_STMT_CHECK (NODE), 0)
1518 : : #define WHILE_BODY(NODE) TREE_OPERAND (WHILE_STMT_CHECK (NODE), 1)
1519 : : #define WHILE_NAME(NODE) TREE_OPERAND (WHILE_STMT_CHECK (NODE), 2)
1520 : :
1521 : : /* DO_STMT accessors. These give access to the condition of the do
1522 : : statement, the body and name of the do statement, respectively. */
1523 : : #define DO_COND(NODE) TREE_OPERAND (DO_STMT_CHECK (NODE), 0)
1524 : : #define DO_BODY(NODE) TREE_OPERAND (DO_STMT_CHECK (NODE), 1)
1525 : : #define DO_NAME(NODE) TREE_OPERAND (DO_STMT_CHECK (NODE), 2)
1526 : :
1527 : : /* FOR_STMT accessors. These give access to the init statement,
1528 : : condition, update expression, body and name of the for statement,
1529 : : respectively. */
1530 : : #define FOR_INIT_STMT(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 0)
1531 : : #define FOR_COND(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 1)
1532 : : #define FOR_EXPR(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 2)
1533 : : #define FOR_BODY(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 3)
1534 : : #define FOR_SCOPE(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 4)
1535 : : #define FOR_NAME(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 5)
1536 : :
1537 : : /* BREAK_STMT accessors. */
1538 : : #define BREAK_NAME(NODE) TREE_OPERAND (BREAK_STMT_CHECK (NODE), 0)
1539 : :
1540 : : /* CONTINUE_STMT accessors. */
1541 : : #define CONTINUE_NAME(NODE) TREE_OPERAND (CONTINUE_STMT_CHECK (NODE), 0)
1542 : :
1543 : : #define SWITCH_STMT_COND(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 0)
1544 : : #define SWITCH_STMT_BODY(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 1)
1545 : : #define SWITCH_STMT_TYPE(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 2)
1546 : : #define SWITCH_STMT_SCOPE(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 3)
1547 : : #define SWITCH_STMT_NAME(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 4)
1548 : : /* True if there are case labels for all possible values of switch cond, either
1549 : : because there is a default: case label or because the case label ranges cover
1550 : : all values. */
1551 : : #define SWITCH_STMT_ALL_CASES_P(NODE) \
1552 : : TREE_LANG_FLAG_0 (SWITCH_STMT_CHECK (NODE))
1553 : : /* True if the body of a switch stmt contains no BREAK_STMTs. */
1554 : : #define SWITCH_STMT_NO_BREAK_P(NODE) \
1555 : : TREE_LANG_FLAG_2 (SWITCH_STMT_CHECK (NODE))
1556 : :
1557 : :
1558 : : /* Nonzero if NODE is the target for genericization of 'break' stmts. */
1559 : : #define LABEL_DECL_BREAK(NODE) \
1560 : : DECL_LANG_FLAG_0 (LABEL_DECL_CHECK (NODE))
1561 : :
1562 : : /* Nonzero if NODE is the target for genericization of 'continue' stmts. */
1563 : : #define LABEL_DECL_CONTINUE(NODE) \
1564 : : DECL_LANG_FLAG_1 (LABEL_DECL_CHECK (NODE))
1565 : :
1566 : : extern bool convert_vector_to_array_for_subscript (location_t, tree *, tree);
1567 : :
1568 : : /* Possibe cases of scalar_to_vector conversion. */
1569 : : enum stv_conv {
1570 : : stv_error, /* Error occurred. */
1571 : : stv_nothing, /* Nothing happened. */
1572 : : stv_firstarg, /* First argument must be expanded. */
1573 : : stv_secondarg /* Second argument must be expanded. */
1574 : : };
1575 : :
1576 : : extern enum stv_conv scalar_to_vector (location_t loc, enum tree_code code,
1577 : : tree op0, tree op1, bool);
1578 : :
1579 : : extern tree find_inv_trees (tree *, int *, void *);
1580 : : extern tree replace_inv_trees (tree *, int *, void *);
1581 : :
1582 : : extern bool reject_gcc_builtin (const_tree, location_t = UNKNOWN_LOCATION);
1583 : : extern bool valid_array_size_p (location_t, const_tree, tree, bool = true);
1584 : : extern void invalid_array_size_error (location_t, cst_size_error,
1585 : : const_tree, const_tree);
1586 : :
1587 : : /* In c-warn.cc. */
1588 : : extern void constant_expression_warning (tree);
1589 : : extern void constant_expression_error (tree);
1590 : : extern void overflow_warning (location_t, tree, tree = NULL_TREE);
1591 : : extern void warn_logical_operator (location_t, enum tree_code, tree,
1592 : : enum tree_code, tree, enum tree_code, tree);
1593 : : extern void warn_tautological_cmp (const op_location_t &, enum tree_code,
1594 : : tree, tree);
1595 : : extern void warn_logical_not_parentheses (location_t, enum tree_code, tree,
1596 : : tree);
1597 : : extern bool warn_if_unused_value (const_tree, location_t, bool = false);
1598 : : extern bool strict_aliasing_warning (location_t, tree, tree);
1599 : : extern void sizeof_pointer_memaccess_warning (location_t *, tree,
1600 : : vec<tree, va_gc> *, tree *,
1601 : : bool (*) (tree, tree));
1602 : : extern void check_main_parameter_types (tree decl);
1603 : : extern void warnings_for_convert_and_check (location_t, tree, tree, tree);
1604 : : extern void c_do_switch_warnings (splay_tree, location_t, tree, tree, bool);
1605 : : extern void warn_for_omitted_condop (location_t, tree);
1606 : : extern bool warn_for_restrict (unsigned, tree *, unsigned);
1607 : : extern void warn_for_address_of_packed_member (tree, tree);
1608 : : extern void warn_parm_array_mismatch (location_t, tree, tree);
1609 : : extern void maybe_warn_sizeof_array_div (location_t, tree, tree, tree, tree);
1610 : : extern void do_warn_array_compare (location_t, tree_code, tree, tree);
1611 : :
1612 : : /* Places where an lvalue, or modifiable lvalue, may be required.
1613 : : Used to select diagnostic messages in lvalue_error and
1614 : : readonly_error. */
1615 : : enum lvalue_use {
1616 : : lv_assign,
1617 : : lv_increment,
1618 : : lv_decrement,
1619 : : lv_addressof,
1620 : : lv_asm
1621 : : };
1622 : :
1623 : : extern void lvalue_error (location_t, enum lvalue_use);
1624 : : extern void invalid_indirection_error (location_t, tree, ref_operator);
1625 : : extern void readonly_error (location_t, tree, enum lvalue_use);
1626 : : extern void warn_array_subscript_with_type_char (location_t, tree);
1627 : : extern void warn_about_parentheses (location_t,
1628 : : enum tree_code,
1629 : : enum tree_code, tree,
1630 : : enum tree_code, tree);
1631 : : extern void warn_for_unused_label (tree label);
1632 : : extern void warn_for_div_by_zero (location_t, tree divisor);
1633 : : extern void warn_for_memset (location_t, tree, tree, int);
1634 : : extern void warn_for_calloc (location_t *, tree, vec<tree, va_gc> *,
1635 : : tree *, tree);
1636 : : extern void warn_for_alloc_size (location_t, tree, tree, tree);
1637 : : extern void warn_for_sign_compare (location_t,
1638 : : tree orig_op0, tree orig_op1,
1639 : : tree op0, tree op1,
1640 : : tree result_type,
1641 : : enum tree_code resultcode);
1642 : : extern void do_warn_double_promotion (tree, tree, tree, const char *,
1643 : : location_t);
1644 : : extern void do_warn_unused_parameter (tree);
1645 : : extern void record_locally_defined_typedef (tree);
1646 : : extern void maybe_record_typedef_use (tree);
1647 : : extern void maybe_warn_unused_local_typedefs (void);
1648 : : extern void maybe_warn_bool_compare (location_t, enum tree_code, tree, tree);
1649 : : extern bool maybe_warn_shift_overflow (location_t, tree, tree);
1650 : : extern void warn_duplicated_cond_add_or_warn (location_t, tree, vec<tree> **);
1651 : : extern bool diagnose_mismatched_attributes (tree, tree);
1652 : : extern tree do_warn_duplicated_branches_r (tree *, int *, void *);
1653 : : extern void warn_for_multistatement_macros (location_t, location_t,
1654 : : location_t, enum rid);
1655 : :
1656 : : extern void check_for_xor_used_as_pow (location_t lhs_loc, tree lhs_val,
1657 : : location_t operator_loc,
1658 : : location_t rhs_loc, tree rhs_val);
1659 : :
1660 : : /* In c-attribs.cc. */
1661 : : extern bool attribute_takes_identifier_p (const_tree);
1662 : : extern tree handle_deprecated_attribute (tree *, tree, tree, int, bool *);
1663 : : extern tree handle_unused_attribute (tree *, tree, tree, int, bool *);
1664 : : extern tree handle_fallthrough_attribute (tree *, tree, tree, int, bool *);
1665 : : extern int parse_tm_stmt_attr (tree, int);
1666 : : extern int tm_attr_to_mask (tree);
1667 : : extern tree tm_mask_to_attr (int);
1668 : : extern tree find_tm_attribute (tree);
1669 : : extern const struct attribute_spec::exclusions attr_aligned_exclusions[];
1670 : : extern const struct attribute_spec::exclusions attr_cold_hot_exclusions[];
1671 : : extern const struct attribute_spec::exclusions attr_noreturn_exclusions[];
1672 : : extern tree handle_aligned_attribute (tree *, tree, tree, int, bool *);
1673 : : extern tree handle_noreturn_attribute (tree *, tree, tree, int, bool *);
1674 : : extern tree handle_musttail_attribute (tree *, tree, tree, int, bool *);
1675 : : extern bool has_attribute (location_t, tree, tree, tree (*)(tree));
1676 : : extern tree build_attr_access_from_parms (tree, bool);
1677 : : extern void set_musttail_on_return (tree, location_t, bool);
1678 : :
1679 : : /* In c-format.cc. */
1680 : : extern bool valid_format_string_type_p (tree);
1681 : :
1682 : : /* A bitmap of flags to positional_argument. */
1683 : : enum posargflags {
1684 : : /* Consider positional attribute argument value zero valid. */
1685 : : POSARG_ZERO = 1,
1686 : : /* Consider positional attribute argument value valid if it refers
1687 : : to the ellipsis (i.e., beyond the last typed argument). */
1688 : : POSARG_ELLIPSIS = 2
1689 : : };
1690 : :
1691 : : extern tree positional_argument (const_tree, const_tree, tree &, tree_code,
1692 : : int = 0, int = posargflags ());
1693 : :
1694 : : extern enum flt_eval_method
1695 : : excess_precision_mode_join (enum flt_eval_method, enum flt_eval_method);
1696 : :
1697 : : extern int c_flt_eval_method (bool ts18661_p);
1698 : : extern void add_no_sanitize_value (tree node, unsigned int flags);
1699 : :
1700 : : extern void maybe_add_include_fixit (rich_location *, const char *, bool);
1701 : : extern void maybe_suggest_missing_token_insertion (rich_location *richloc,
1702 : : enum cpp_ttype token_type,
1703 : : location_t prev_token_loc);
1704 : : extern void maybe_emit_indirection_note (location_t loc,
1705 : : tree expr, tree expected_type);
1706 : : extern bool compatible_types_for_indirection_note_p (tree type1, tree type2);
1707 : :
1708 : : extern tree braced_lists_to_strings (tree, tree);
1709 : :
1710 : : #if CHECKING_P
1711 : : namespace selftest {
1712 : : /* Declarations for specific families of tests within c-family,
1713 : : by source file, in alphabetical order. */
1714 : : extern void c_diagnostic_cc_tests (void);
1715 : : extern void c_format_cc_tests (void);
1716 : : extern void c_indentation_cc_tests (void);
1717 : : extern void c_opt_problem_cc_tests (void);
1718 : : extern void c_pretty_print_cc_tests (void);
1719 : : extern void c_spellcheck_cc_tests (void);
1720 : :
1721 : : /* The entrypoint for running all of the above tests. */
1722 : : extern void c_family_tests (void);
1723 : : } // namespace selftest
1724 : : #endif /* #if CHECKING_P */
1725 : :
1726 : : #endif /* ! GCC_C_COMMON_H */
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