1 /* Definitions for c-common.c.
2 Copyright (C) 1987-2021 Free Software Foundation, Inc.
4 This file is part of GCC.
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
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
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/>. */
20 #ifndef GCC_C_COMMON_H
21 #define GCC_C_COMMON_H
23 #include "splay-tree.h"
27 #include "fold-const.h"
28 #include "wide-int-bitmask.h"
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)
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 \
41 #ifndef GCC_DIAG_STYLE
42 #define GCC_DIAG_STYLE __gcc_cdiag__
44 #include "diagnostic-core.h"
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)
53 3: STATEMENT_LIST_HAS_LABEL (in STATEMENT_LIST)
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. */
66 /* C, in empirical order of frequency. */
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
,
74 RID_COMPLEX
, RID_THREAD
, RID_SAT
,
77 RID_FRIEND
, RID_VIRTUAL
, RID_EXPLICIT
, RID_EXPORT
, RID_MUTABLE
,
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
,
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
,
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
,
95 /* C (reserved and imaginary types not implemented, so any use is a
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
,
107 RID_ASM
, RID_TYPEOF
, RID_ALIGNOF
, RID_ATTRIBUTE
, RID_VA_ARG
,
108 RID_EXTENSION
, RID_IMAGPART
, RID_REALPART
, RID_LABEL
, RID_CHOOSE_EXPR
,
109 RID_TYPES_COMPATIBLE_P
, RID_BUILTIN_COMPLEX
, RID_BUILTIN_SHUFFLE
,
110 RID_BUILTIN_CONVERTVECTOR
, RID_BUILTIN_TGMATH
,
111 RID_BUILTIN_HAS_ATTRIBUTE
,
112 RID_DFLOAT32
, RID_DFLOAT64
, RID_DFLOAT128
,
114 /* TS 18661-3 keywords, in the same sequence as the TI_* values. */
116 RID_FLOATN_NX_FIRST
= RID_FLOAT16
,
123 #define CASE_RID_FLOATN_NX \
124 case RID_FLOAT16: case RID_FLOAT32: case RID_FLOAT64: case RID_FLOAT128: \
125 case RID_FLOAT32X: case RID_FLOAT64X: case RID_FLOAT128X
127 RID_FRACT
, RID_ACCUM
, RID_AUTO_TYPE
, RID_BUILTIN_CALL_WITH_STATIC_CHAIN
,
129 /* "__GIMPLE", for the GIMPLE-parsing extension to the C frontend. */
132 /* "__PHI", for parsing PHI function in GIMPLE FE. */
135 /* "__RTL", for the RTL-parsing extension to the C frontend. */
139 RID_ALIGNAS
, RID_GENERIC
,
141 /* This means to warn that this is a C++ keyword, and then treat it
142 as a normal identifier. */
145 /* GNU transactional memory extension */
146 RID_TRANSACTION_ATOMIC
, RID_TRANSACTION_RELAXED
, RID_TRANSACTION_CANCEL
,
148 /* Too many ways of getting the name of a function as a string */
149 RID_FUNCTION_NAME
, RID_PRETTY_FUNCTION_NAME
, RID_C99_FUNCTION_NAME
,
151 /* C++ (some of these are keywords in Objective-C as well, but only
152 if they appear after a '@') */
153 RID_BOOL
, RID_WCHAR
, RID_CLASS
,
154 RID_PUBLIC
, RID_PRIVATE
, RID_PROTECTED
,
155 RID_TEMPLATE
, RID_NULL
, RID_CATCH
,
156 RID_DELETE
, RID_FALSE
, RID_NAMESPACE
,
157 RID_NEW
, RID_OFFSETOF
, RID_OPERATOR
,
158 RID_THIS
, RID_THROW
, RID_TRUE
,
159 RID_TRY
, RID_TYPENAME
, RID_TYPEID
,
160 RID_USING
, RID_CHAR16
, RID_CHAR32
,
163 RID_CONSTCAST
, RID_DYNCAST
, RID_REINTCAST
, RID_STATCAST
,
166 RID_ADDRESSOF
, RID_BASES
,
167 RID_BUILTIN_LAUNDER
, RID_DIRECT_BASES
,
168 RID_HAS_NOTHROW_ASSIGN
, RID_HAS_NOTHROW_CONSTRUCTOR
,
169 RID_HAS_NOTHROW_COPY
, RID_HAS_TRIVIAL_ASSIGN
,
170 RID_HAS_TRIVIAL_CONSTRUCTOR
, RID_HAS_TRIVIAL_COPY
,
171 RID_HAS_TRIVIAL_DESTRUCTOR
, RID_HAS_UNIQUE_OBJ_REPRESENTATIONS
,
172 RID_HAS_VIRTUAL_DESTRUCTOR
, RID_BUILTIN_BIT_CAST
,
173 RID_IS_ABSTRACT
, RID_IS_AGGREGATE
,
174 RID_IS_BASE_OF
, RID_IS_CLASS
,
175 RID_IS_EMPTY
, RID_IS_ENUM
,
176 RID_IS_FINAL
, RID_IS_LITERAL_TYPE
,
177 RID_IS_POD
, RID_IS_POLYMORPHIC
,
179 RID_IS_STD_LAYOUT
, RID_IS_TRIVIAL
,
180 RID_IS_TRIVIALLY_ASSIGNABLE
, RID_IS_TRIVIALLY_CONSTRUCTIBLE
,
181 RID_IS_TRIVIALLY_COPYABLE
,
182 RID_IS_UNION
, RID_UNDERLYING_TYPE
,
183 RID_IS_ASSIGNABLE
, RID_IS_CONSTRUCTIBLE
,
184 RID_IS_NOTHROW_ASSIGNABLE
, RID_IS_NOTHROW_CONSTRUCTIBLE
,
187 RID_CONSTEXPR
, RID_DECLTYPE
, RID_NOEXCEPT
, RID_NULLPTR
, RID_STATIC_ASSERT
,
190 RID_CONSTINIT
, RID_CONSTEVAL
,
196 RID_CONCEPT
, RID_REQUIRES
,
199 RID__MODULE
, RID__IMPORT
, RID__EXPORT
, /* Internal tokens. */
202 RID_CO_AWAIT
, RID_CO_YIELD
, RID_CO_RETURN
,
204 /* C++ transactional memory. */
205 RID_ATOMIC_NOEXCEPT
, RID_ATOMIC_CANCEL
, RID_SYNCHRONIZED
,
207 /* Objective-C ("AT" reserved words - they are only keywords when
209 RID_AT_ENCODE
, RID_AT_END
,
210 RID_AT_CLASS
, RID_AT_ALIAS
, RID_AT_DEFS
,
211 RID_AT_PRIVATE
, RID_AT_PROTECTED
, RID_AT_PUBLIC
, RID_AT_PACKAGE
,
212 RID_AT_PROTOCOL
, RID_AT_SELECTOR
,
213 RID_AT_THROW
, RID_AT_TRY
, RID_AT_CATCH
,
214 RID_AT_FINALLY
, RID_AT_SYNCHRONIZED
,
215 RID_AT_OPTIONAL
, RID_AT_REQUIRED
, RID_AT_PROPERTY
,
216 RID_AT_SYNTHESIZE
, RID_AT_DYNAMIC
,
218 RID_AT_IMPLEMENTATION
,
220 /* Named address support, mapping the keyword to a particular named address
221 number. Named address space 0 is reserved for the generic address. If
222 there are more than 254 named addresses, the addr_space_t type will need
223 to be grown from an unsigned char to unsigned short. */
224 RID_ADDR_SPACE_0
, /* generic address */
241 RID_FIRST_ADDR_SPACE
= RID_ADDR_SPACE_0
,
242 RID_LAST_ADDR_SPACE
= RID_ADDR_SPACE_15
,
244 /* __intN keywords. The _N_M here doesn't correspond to the intN
245 in the keyword; use the bitsize in int_n_t_data_t[M] for that.
246 For example, if int_n_t_data_t[0].bitsize is 13, then RID_INT_N_0
249 /* Note that the range to use is RID_FIRST_INT_N through
250 RID_FIRST_INT_N + NUM_INT_N_ENTS - 1 and c-parser.c has a list of
251 all RID_INT_N_* in a case statement. */
258 RID_FIRST_INT_N
= RID_INT_N_0
,
259 RID_LAST_INT_N
= RID_INT_N_3
,
263 RID_FIRST_MODIFIER
= RID_STATIC
,
264 RID_LAST_MODIFIER
= RID_ONEWAY
,
266 RID_FIRST_CXX11
= RID_CONSTEXPR
,
267 RID_LAST_CXX11
= RID_STATIC_ASSERT
,
268 RID_FIRST_CXX20
= RID_CONSTINIT
,
269 RID_LAST_CXX20
= RID_CONSTINIT
,
270 RID_FIRST_AT
= RID_AT_ENCODE
,
271 RID_LAST_AT
= RID_AT_IMPLEMENTATION
,
272 RID_FIRST_PQ
= RID_IN
,
273 RID_LAST_PQ
= RID_ONEWAY
,
274 RID_FIRST_PATTR
= RID_GETTER
,
275 RID_LAST_PATTR
= RID_NULL_RESETTABLE
278 #define OBJC_IS_AT_KEYWORD(rid) \
279 ((unsigned int) (rid) >= (unsigned int) RID_FIRST_AT && \
280 (unsigned int) (rid) <= (unsigned int) RID_LAST_AT)
282 #define OBJC_IS_PQ_KEYWORD(rid) \
283 ((unsigned int) (rid) >= (unsigned int) RID_FIRST_PQ && \
284 (unsigned int) (rid) <= (unsigned int) RID_LAST_PQ)
286 /* Keywords permitted in an @property attribute context. */
287 #define OBJC_IS_PATTR_KEYWORD(rid) \
288 ((((unsigned int) (rid) >= (unsigned int) RID_FIRST_PATTR && \
289 (unsigned int) (rid) <= (unsigned int) RID_LAST_PATTR)) \
292 /* OBJC_IS_CXX_KEYWORD recognizes the 'CXX_OBJC' keywords (such as
293 'class') which are shared in a subtle way between Objective-C and
294 C++. When the lexer is lexing in Objective-C/Objective-C++, if it
295 finds '@' followed by one of these identifiers (eg, '@class'), it
296 recognizes the whole as an Objective-C keyword. If the identifier
297 is found elsewhere, it follows the rules of the C/C++ language.
299 #define OBJC_IS_CXX_KEYWORD(rid) \
300 (rid == RID_CLASS || rid == RID_SYNCHRONIZED \
301 || rid == RID_PUBLIC || rid == RID_PROTECTED || rid == RID_PRIVATE \
302 || rid == RID_TRY || rid == RID_THROW || rid == RID_CATCH)
304 /* The elements of `ridpointers' are identifier nodes for the reserved
305 type names and storage classes. It is indexed by a RID_... value. */
306 extern GTY ((length ("(int) RID_MAX"))) tree
*ridpointers
;
308 /* Standard named or nameless data types of the C compiler. */
316 CTI_UNDERLYING_WCHAR_TYPE
,
318 CTI_SIGNED_SIZE_TYPE
, /* For format checking only. */
319 CTI_UNSIGNED_PTRDIFF_TYPE
, /* For format checking only. */
322 CTI_WIDEST_INT_LIT_TYPE
,
323 CTI_WIDEST_UINT_LIT_TYPE
,
325 /* Types for <stdint.h>, that may not be defined on all
337 CTI_INT_LEAST16_TYPE
,
338 CTI_INT_LEAST32_TYPE
,
339 CTI_INT_LEAST64_TYPE
,
340 CTI_UINT_LEAST8_TYPE
,
341 CTI_UINT_LEAST16_TYPE
,
342 CTI_UINT_LEAST32_TYPE
,
343 CTI_UINT_LEAST64_TYPE
,
349 CTI_UINT_FAST16_TYPE
,
350 CTI_UINT_FAST32_TYPE
,
351 CTI_UINT_FAST64_TYPE
,
356 CTI_CHAR8_ARRAY_TYPE
,
357 CTI_CHAR16_ARRAY_TYPE
,
358 CTI_CHAR32_ARRAY_TYPE
,
359 CTI_WCHAR_ARRAY_TYPE
,
361 CTI_CONST_STRING_TYPE
,
363 /* Type for boolean expressions (bool in C++, int in C). */
366 CTI_TRUTHVALUE_FALSE
,
368 CTI_DEFAULT_FUNCTION_TYPE
,
372 /* These are not types, but we have to look them up all the time. */
373 CTI_FUNCTION_NAME_DECL
,
374 CTI_PRETTY_FUNCTION_NAME_DECL
,
375 CTI_C99_FUNCTION_NAME_DECL
,
378 /* Below here entities change during compilation. */
380 CTI_SAVED_FUNCTION_NAME_DECLS
,
385 #define C_CPP_HASHNODE(id) \
386 (&(((struct c_common_identifier *) (id))->node))
387 #define C_RID_CODE(id) \
388 ((enum rid) (((struct c_common_identifier *) (id))->node.rid_code))
389 #define C_SET_RID_CODE(id, code) \
390 (((struct c_common_identifier *) (id))->node.rid_code = (unsigned char) code)
392 /* Identifier part common to the C front ends. Inherits from
393 tree_identifier, despite appearances. */
394 struct GTY(()) c_common_identifier
{
395 struct tree_common common
;
396 struct cpp_hashnode node
;
399 /* An entry in the reserved keyword table. */
401 struct c_common_resword
403 const char *const word
;
404 ENUM_BITFIELD(rid
) const rid
: 16;
405 const unsigned int disable
: 16;
408 /* Mode used to build pointers (VOIDmode means ptr_mode). */
410 extern machine_mode c_default_pointer_mode
;
412 /* Extra cpp_ttype values for C++. */
414 /* A token type for template-ids. If a template-id is processed while
415 parsing tentatively, it is replaced with a CPP_TEMPLATE_ID token;
416 the value of the CPP_TEMPLATE_ID is whatever was returned by
417 cp_parser_template_id. */
418 #define CPP_TEMPLATE_ID ((enum cpp_ttype) (CPP_KEYWORD + 1))
420 /* A token type for nested-name-specifiers. If a
421 nested-name-specifier is processed while parsing tentatively, it is
422 replaced with a CPP_NESTED_NAME_SPECIFIER token; the value of the
423 CPP_NESTED_NAME_SPECIFIER is whatever was returned by
424 cp_parser_nested_name_specifier_opt. */
425 #define CPP_NESTED_NAME_SPECIFIER ((enum cpp_ttype) (CPP_TEMPLATE_ID + 1))
427 /* A token type for pre-parsed C++0x decltype. */
428 #define CPP_DECLTYPE ((enum cpp_ttype) (CPP_NESTED_NAME_SPECIFIER + 1))
430 /* A token type for pre-parsed primary-expression (lambda- or statement-). */
431 #define CPP_PREPARSED_EXPR ((enum cpp_ttype) (CPP_DECLTYPE + 1))
433 /* The number of token types, including C++-specific ones. */
434 #define N_CP_TTYPES ((int) (CPP_PREPARSED_EXPR + 1))
436 /* Disable mask. Keywords are disabled if (reswords[i].disable &
437 mask) is _true_. Thus for keywords which are present in all
438 languages the disable field is zero. */
440 #define D_CONLY 0x0001 /* C only (not in C++). */
441 #define D_CXXONLY 0x0002 /* C++ only (not in C). */
442 #define D_C99 0x0004 /* In C, C99 only. */
443 #define D_CXX11 0x0008 /* In C++, C++11 only. */
444 #define D_EXT 0x0010 /* GCC extension. */
445 #define D_EXT89 0x0020 /* GCC extension incorporated in C99. */
446 #define D_ASM 0x0040 /* Disabled by -fno-asm. */
447 #define D_OBJC 0x0080 /* In Objective C and neither C nor C++. */
448 #define D_CXX_OBJC 0x0100 /* In Objective C, and C++, but not C. */
449 #define D_CXXWARN 0x0200 /* In C warn with -Wcxx-compat. */
450 #define D_CXX_CONCEPTS 0x0400 /* In C++, only with concepts. */
451 #define D_TRANSMEM 0X0800 /* C++ transactional memory TS. */
452 #define D_CXX_CHAR8_T 0X1000 /* In C++, only with -fchar8_t. */
453 #define D_CXX20 0x2000 /* In C++, C++20 only. */
454 #define D_CXX_COROUTINES 0x4000 /* In C++, only with coroutines. */
455 #define D_CXX_MODULES 0x8000 /* In C++, only with modules. */
457 #define D_CXX_CONCEPTS_FLAGS D_CXXONLY | D_CXX_CONCEPTS
458 #define D_CXX_CHAR8_T_FLAGS D_CXXONLY | D_CXX_CHAR8_T
459 #define D_CXX_MODULES_FLAGS (D_CXXONLY | D_CXX_MODULES)
460 #define D_CXX_COROUTINES_FLAGS (D_CXXONLY | D_CXX_COROUTINES)
462 /* The reserved keyword table. */
463 extern const struct c_common_resword c_common_reswords
[];
465 /* The number of items in the reserved keyword table. */
466 extern const unsigned int num_c_common_reswords
;
468 #define char8_type_node c_global_trees[CTI_CHAR8_TYPE]
469 #define char16_type_node c_global_trees[CTI_CHAR16_TYPE]
470 #define char32_type_node c_global_trees[CTI_CHAR32_TYPE]
471 #define wchar_type_node c_global_trees[CTI_WCHAR_TYPE]
472 #define underlying_wchar_type_node c_global_trees[CTI_UNDERLYING_WCHAR_TYPE]
473 #define wint_type_node c_global_trees[CTI_WINT_TYPE]
474 #define signed_size_type_node c_global_trees[CTI_SIGNED_SIZE_TYPE]
475 #define unsigned_ptrdiff_type_node c_global_trees[CTI_UNSIGNED_PTRDIFF_TYPE]
476 #define intmax_type_node c_global_trees[CTI_INTMAX_TYPE]
477 #define uintmax_type_node c_global_trees[CTI_UINTMAX_TYPE]
478 #define widest_integer_literal_type_node c_global_trees[CTI_WIDEST_INT_LIT_TYPE]
479 #define widest_unsigned_literal_type_node c_global_trees[CTI_WIDEST_UINT_LIT_TYPE]
481 #define sig_atomic_type_node c_global_trees[CTI_SIG_ATOMIC_TYPE]
482 #define int8_type_node c_global_trees[CTI_INT8_TYPE]
483 #define int16_type_node c_global_trees[CTI_INT16_TYPE]
484 #define int32_type_node c_global_trees[CTI_INT32_TYPE]
485 #define int64_type_node c_global_trees[CTI_INT64_TYPE]
486 #define uint8_type_node c_global_trees[CTI_UINT8_TYPE]
487 #define c_uint16_type_node c_global_trees[CTI_UINT16_TYPE]
488 #define c_uint32_type_node c_global_trees[CTI_UINT32_TYPE]
489 #define c_uint64_type_node c_global_trees[CTI_UINT64_TYPE]
490 #define int_least8_type_node c_global_trees[CTI_INT_LEAST8_TYPE]
491 #define int_least16_type_node c_global_trees[CTI_INT_LEAST16_TYPE]
492 #define int_least32_type_node c_global_trees[CTI_INT_LEAST32_TYPE]
493 #define int_least64_type_node c_global_trees[CTI_INT_LEAST64_TYPE]
494 #define uint_least8_type_node c_global_trees[CTI_UINT_LEAST8_TYPE]
495 #define uint_least16_type_node c_global_trees[CTI_UINT_LEAST16_TYPE]
496 #define uint_least32_type_node c_global_trees[CTI_UINT_LEAST32_TYPE]
497 #define uint_least64_type_node c_global_trees[CTI_UINT_LEAST64_TYPE]
498 #define int_fast8_type_node c_global_trees[CTI_INT_FAST8_TYPE]
499 #define int_fast16_type_node c_global_trees[CTI_INT_FAST16_TYPE]
500 #define int_fast32_type_node c_global_trees[CTI_INT_FAST32_TYPE]
501 #define int_fast64_type_node c_global_trees[CTI_INT_FAST64_TYPE]
502 #define uint_fast8_type_node c_global_trees[CTI_UINT_FAST8_TYPE]
503 #define uint_fast16_type_node c_global_trees[CTI_UINT_FAST16_TYPE]
504 #define uint_fast32_type_node c_global_trees[CTI_UINT_FAST32_TYPE]
505 #define uint_fast64_type_node c_global_trees[CTI_UINT_FAST64_TYPE]
506 #define intptr_type_node c_global_trees[CTI_INTPTR_TYPE]
507 #define uintptr_type_node c_global_trees[CTI_UINTPTR_TYPE]
509 #define truthvalue_type_node c_global_trees[CTI_TRUTHVALUE_TYPE]
510 #define truthvalue_true_node c_global_trees[CTI_TRUTHVALUE_TRUE]
511 #define truthvalue_false_node c_global_trees[CTI_TRUTHVALUE_FALSE]
513 #define char_array_type_node c_global_trees[CTI_CHAR_ARRAY_TYPE]
514 #define char8_array_type_node c_global_trees[CTI_CHAR8_ARRAY_TYPE]
515 #define char16_array_type_node c_global_trees[CTI_CHAR16_ARRAY_TYPE]
516 #define char32_array_type_node c_global_trees[CTI_CHAR32_ARRAY_TYPE]
517 #define wchar_array_type_node c_global_trees[CTI_WCHAR_ARRAY_TYPE]
518 #define string_type_node c_global_trees[CTI_STRING_TYPE]
519 #define const_string_type_node c_global_trees[CTI_CONST_STRING_TYPE]
521 #define default_function_type c_global_trees[CTI_DEFAULT_FUNCTION_TYPE]
523 #define function_name_decl_node c_global_trees[CTI_FUNCTION_NAME_DECL]
524 #define pretty_function_name_decl_node c_global_trees[CTI_PRETTY_FUNCTION_NAME_DECL]
525 #define c99_function_name_decl_node c_global_trees[CTI_C99_FUNCTION_NAME_DECL]
526 #define saved_function_name_decls c_global_trees[CTI_SAVED_FUNCTION_NAME_DECLS]
528 /* The node for C++ `__null'. */
529 #define null_node c_global_trees[CTI_NULL]
531 extern GTY(()) tree c_global_trees
[CTI_MAX
];
533 /* Mark which labels are explicitly declared.
534 These may be shadowed, and may be referenced from nested functions. */
535 #define C_DECLARED_LABEL_FLAG(label) TREE_LANG_FLAG_1 (label)
539 clk_c
= 0, /* C90, C94, C99, C11 or C2X */
540 clk_objc
= 1, /* clk_c with ObjC features. */
541 clk_cxx
= 2, /* ANSI/ISO C++ */
542 clk_objcxx
= 3 /* clk_cxx with ObjC features. */
545 /* To test for a specific language use c_language, defined by each
546 front end. For "ObjC features" or "not C++" use the macros. */
547 extern c_language_kind c_language
;
549 #define c_dialect_cxx() ((c_language & clk_cxx) != 0)
550 #define c_dialect_objc() ((c_language & clk_objc) != 0)
552 /* The various name of operator that appears in error messages. */
562 /* implicit conversion */
563 RO_IMPLICIT_CONVERSION
,
568 /* Information about a statement tree. */
570 struct GTY(()) stmt_tree_s
{
571 /* A stack of statement lists being collected. */
572 vec
<tree
, va_gc
> *x_cur_stmt_list
;
574 /* In C++, Nonzero if we should treat statements as full
575 expressions. In particular, this variable is non-zero if at the
576 end of a statement we should destroy any temporaries created
577 during that statement. Similarly, if, at the end of a block, we
578 should destroy any local variables in this block. Normally, this
579 variable is nonzero, since those are the normal semantics of
582 This flag has no effect in C. */
583 int stmts_are_full_exprs_p
;
586 typedef struct stmt_tree_s
*stmt_tree
;
588 /* Global state pertinent to the current function. Some C dialects
589 extend this structure with additional fields. */
591 struct GTY(()) c_language_function
{
592 /* While we are parsing the function, this contains information
593 about the statement-tree that we are building. */
594 struct stmt_tree_s x_stmt_tree
;
596 /* Vector of locally defined typedefs, for
597 -Wunused-local-typedefs. */
598 vec
<tree
, va_gc
> *local_typedefs
;
601 #define stmt_list_stack (current_stmt_tree ()->x_cur_stmt_list)
603 /* When building a statement-tree, this is the current statement list
605 #define cur_stmt_list (stmt_list_stack->last ())
607 #define building_stmt_list_p() (stmt_list_stack && !stmt_list_stack->is_empty())
609 /* Language-specific hooks. */
611 /* If non-NULL, this function is called after a precompile header file
613 extern void (*lang_post_pch_load
) (void);
615 extern void push_file_scope (void);
616 extern void pop_file_scope (void);
617 extern stmt_tree
current_stmt_tree (void);
618 extern tree
push_stmt_list (void);
619 extern tree
pop_stmt_list (tree
);
620 extern tree
add_stmt (tree
);
621 extern void push_cleanup (tree
, tree
, bool);
623 extern tree
build_modify_expr (location_t
, tree
, tree
, enum tree_code
,
624 location_t
, tree
, tree
);
625 extern tree
build_indirect_ref (location_t
, tree
, ref_operator
);
627 extern bool has_c_linkage (const_tree decl
);
628 extern bool c_decl_implicit (const_tree
);
630 /* Switches common to the C front ends. */
632 /* Nonzero means don't output line number information. */
634 extern char flag_no_line_commands
;
636 /* Nonzero causes -E output not to be done, but directives such as
637 #define that have side effects are still obeyed. */
639 extern char flag_no_output
;
641 /* Nonzero means dump macros in some fashion; contains the 'D', 'M',
642 'N' or 'U' of the command line switch. */
644 extern char flag_dump_macros
;
646 /* Nonzero means pass #include lines through to the output. */
648 extern char flag_dump_includes
;
650 /* Nonzero means process PCH files while preprocessing. */
652 extern bool flag_pch_preprocess
;
654 /* The file name to which we should write a precompiled header, or
655 NULL if no header will be written in this compile. */
657 extern const char *pch_file
;
659 /* Nonzero if an ISO standard was selected. It rejects macros in the
664 /* C/ObjC language option variables. */
667 /* Nonzero means allow type mismatches in conditional expressions;
668 just make their values `void'. */
670 extern int flag_cond_mismatch
;
672 /* Nonzero means enable C89 Amendment 1 features. */
674 extern int flag_isoc94
;
676 /* Nonzero means use the ISO C99 (or later) dialect of C. */
678 extern int flag_isoc99
;
680 /* Nonzero means use the ISO C11 (or later) dialect of C. */
682 extern int flag_isoc11
;
684 /* Nonzero means use the ISO C2X dialect of C. */
686 extern int flag_isoc2x
;
688 /* Nonzero means that we have builtin functions, and main is an int. */
690 extern int flag_hosted
;
692 /* ObjC language option variables. */
695 /* Tells the compiler that this is a special run. Do not perform any
696 compiling, instead we are to test some platform dependent features
697 and output a C header file with appropriate definitions. */
699 extern int print_struct_values
;
701 /* Tells the compiler what is the constant string class for ObjC. */
703 extern const char *constant_string_class_name
;
706 /* C++ language option variables. */
708 /* The reference version of the ABI for -Wabi. */
710 extern int warn_abi_version
;
712 /* Return TRUE if one of {flag_abi_version,flag_abi_compat_version} is
713 less than N and the other is at least N. */
714 #define abi_compat_version_crosses(N) \
715 (abi_version_at_least(N) \
716 != (flag_abi_compat_version == 0 \
717 || flag_abi_compat_version >= (N)))
719 /* Return TRUE if one of {flag_abi_version,warn_abi_version} is
720 less than N and the other is at least N, for use by -Wabi. */
721 #define abi_version_crosses(N) \
722 (abi_version_at_least(N) \
723 != (warn_abi_version == 0 \
724 || warn_abi_version >= (N)))
726 /* The supported C++ dialects. */
744 /* The C++ dialect being used. C++98 is the default. */
745 extern enum cxx_dialect cxx_dialect
;
747 /* Maximum template instantiation depth. This limit is rather
748 arbitrary, but it exists to limit the time it takes to notice
749 excessively recursive template instantiations. */
751 extern int max_tinst_depth
;
753 /* Nonzero means that we should not issue warnings about problems that
754 occur when the code is executed, because the code being processed
755 is not expected to be executed. This is set during parsing. This
756 is used for cases like sizeof() and "0 ? a : b". This is a count,
757 not a bool, because unexecuted expressions can nest. */
759 extern int c_inhibit_evaluation_warnings
;
761 /* Whether lexing has been completed, so subsequent preprocessor
762 errors should use the compiler's input_location. */
764 extern bool done_lexing
;
766 /* C types are partitioned into three subsets: object, function, and
768 #define C_TYPE_OBJECT_P(type) \
769 (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type))
771 #define C_TYPE_INCOMPLETE_P(type) \
772 (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type) == 0)
774 #define C_TYPE_FUNCTION_P(type) \
775 (TREE_CODE (type) == FUNCTION_TYPE)
777 /* For convenience we define a single macro to identify the class of
778 object or incomplete types. */
779 #define C_TYPE_OBJECT_OR_INCOMPLETE_P(type) \
780 (!C_TYPE_FUNCTION_P (type))
782 /* Return true if TYPE is a vector type that should be subject to the GNU
783 vector extensions (as opposed to a vector type that is used only for
784 the purposes of defining target-specific built-in functions). */
787 gnu_vector_type_p (const_tree type
)
789 return TREE_CODE (type
) == VECTOR_TYPE
&& !TYPE_INDIVISIBLE_P (type
);
792 struct visibility_flags
794 unsigned inpragma
: 1; /* True when in #pragma GCC visibility. */
795 unsigned inlines_hidden
: 1; /* True when -finlineshidden in effect. */
798 /* These enumerators are possible types of unsafe conversions. */
799 enum conversion_safety
{
800 /* The conversion is safe. */
802 /* Another type of conversion with problems. */
804 /* Conversion between signed and unsigned integers. */
806 /* Conversions that reduce the precision of reals including conversions
807 from reals to integers. */
809 /* Conversions from complex to reals or integers, that discard imaginary
814 /* Global visibility options. */
815 extern struct visibility_flags visibility_options
;
817 /* Attribute table common to the C front ends. */
818 extern const struct attribute_spec c_common_attribute_table
[];
819 extern const struct attribute_spec c_common_format_attribute_table
[];
821 /* Pointer to function to lazily generate the VAR_DECL for __FUNCTION__ etc.
822 ID is the identifier to use, NAME is the string.
823 TYPE_DEP indicates whether it depends on type of the function or not
824 (i.e. __PRETTY_FUNCTION__). */
826 extern tree (*make_fname_decl
) (location_t
, tree
, int);
828 /* In c-decl.c and cp/tree.c. FIXME. */
829 extern void c_register_addr_space (const char *str
, addr_space_t as
);
832 extern bool in_late_binary_op
;
833 extern const char *c_addr_space_name (addr_space_t as
);
834 extern tree
identifier_global_value (tree
);
835 extern tree
identifier_global_tag (tree
);
836 extern bool names_builtin_p (const char *);
837 extern tree
c_linkage_bindings (tree
);
838 extern void record_builtin_type (enum rid
, const char *, tree
);
839 extern tree
build_void_list_node (void);
840 extern void start_fname_decls (void);
841 extern void finish_fname_decls (void);
842 extern const char *fname_as_string (int);
843 extern tree
fname_decl (location_t
, unsigned, tree
);
845 extern int check_user_alignment (const_tree
, bool, bool);
846 extern bool check_function_arguments (location_t loc
, const_tree
, const_tree
,
847 int, tree
*, vec
<location_t
> *);
848 extern void check_function_arguments_recurse (void (*)
850 unsigned HOST_WIDE_INT
),
852 unsigned HOST_WIDE_INT
);
853 extern bool check_builtin_function_arguments (location_t
, vec
<location_t
>,
854 tree
, tree
, int, tree
*);
855 extern void check_function_format (const_tree
, tree
, int, tree
*,
857 extern bool attribute_fallthrough_p (tree
);
858 extern tree
handle_format_attribute (tree
*, tree
, tree
, int, bool *);
859 extern tree
handle_format_arg_attribute (tree
*, tree
, tree
, int, bool *);
860 extern bool c_common_handle_option (size_t, const char *, HOST_WIDE_INT
, int,
862 const struct cl_option_handlers
*);
863 extern bool default_handle_c_option (size_t, const char *, int);
864 extern tree
c_common_type_for_mode (machine_mode
, int);
865 extern tree
c_common_type_for_size (unsigned int, int);
866 extern tree
c_common_fixed_point_type_for_size (unsigned int, unsigned int,
868 extern tree
c_common_unsigned_type (tree
);
869 extern tree
c_common_signed_type (tree
);
870 extern tree
c_common_signed_or_unsigned_type (int, tree
);
871 extern void c_common_init_ts (void);
872 extern tree
c_build_bitfield_integer_type (unsigned HOST_WIDE_INT
, int);
873 extern enum conversion_safety
unsafe_conversion_p (tree
, tree
, tree
, bool);
874 extern bool decl_with_nonnull_addr_p (const_tree
);
875 extern tree
c_fully_fold (tree
, bool, bool *, bool = false);
876 extern tree
c_wrap_maybe_const (tree
, bool);
877 extern tree
c_common_truthvalue_conversion (location_t
, tree
);
878 extern void c_apply_type_quals_to_decl (int, tree
);
879 extern tree
c_sizeof_or_alignof_type (location_t
, tree
, bool, bool, int);
880 extern tree
c_alignof_expr (location_t
, tree
);
881 /* Print an error message for invalid operands to arith operation CODE.
882 NOP_EXPR is used as a special case (see truthvalue_conversion). */
883 extern void binary_op_error (rich_location
*, enum tree_code
, tree
, tree
);
884 extern tree
fix_string_type (tree
);
885 extern tree
convert_and_check (location_t
, tree
, tree
);
886 extern bool c_determine_visibility (tree
);
887 extern bool vector_types_compatible_elements_p (tree
, tree
);
888 extern void mark_valid_location_for_stdc_pragma (bool);
889 extern bool valid_location_for_stdc_pragma_p (void);
890 extern void set_float_const_decimal64 (void);
891 extern void clear_float_const_decimal64 (void);
892 extern bool float_const_decimal64_p (void);
894 extern bool keyword_begins_type_specifier (enum rid
);
895 extern bool keyword_is_storage_class_specifier (enum rid
);
896 extern bool keyword_is_type_qualifier (enum rid
);
897 extern bool keyword_is_decl_specifier (enum rid
);
898 extern unsigned max_align_t_align (void);
899 extern bool cxx_fundamental_alignment_p (unsigned);
900 extern bool pointer_to_zero_sized_aggr_p (tree
);
901 extern bool bool_promoted_to_int_p (tree
);
902 extern tree
fold_for_warn (tree
);
903 extern tree
c_common_get_narrower (tree
, int *);
904 extern bool get_attribute_operand (tree
, unsigned HOST_WIDE_INT
*);
905 extern void c_common_finalize_early_debug (void);
908 #define c_sizeof(LOC, T) c_sizeof_or_alignof_type (LOC, T, true, false, 1)
909 #define c_alignof(LOC, T) c_sizeof_or_alignof_type (LOC, T, false, false, 1)
911 /* Subroutine of build_binary_op, used for certain operations. */
912 extern tree
shorten_binary_op (tree result_type
, tree op0
, tree op1
, bool bitwise
);
914 /* Subroutine of build_binary_op, used for comparison operations.
915 See if the operands have both been converted from subword integer types
916 and, if so, perhaps change them both back to their original type. */
917 extern tree
shorten_compare (location_t
, tree
*, tree
*, tree
*,
920 extern tree
pointer_int_sum (location_t
, enum tree_code
, tree
, tree
,
923 /* Add qualifiers to a type, in the fashion for C. */
924 extern tree
c_build_qualified_type (tree
, int, tree
= NULL_TREE
, size_t = 0);
926 /* Build tree nodes and builtin functions common to both C and C++ language
928 extern void c_common_nodes_and_builtins (void);
930 extern void disable_builtin_function (const char *);
932 extern void set_compound_literal_name (tree decl
);
934 extern tree
build_va_arg (location_t
, tree
, tree
);
936 extern const unsigned int c_family_lang_mask
;
937 extern unsigned int c_common_option_lang_mask (void);
938 extern void c_common_diagnostics_set_defaults (diagnostic_context
*);
939 extern bool c_common_complain_wrong_lang_p (const struct cl_option
*);
940 extern void c_common_init_options_struct (struct gcc_options
*);
941 extern void c_common_init_options (unsigned int, struct cl_decoded_option
*);
942 extern bool c_common_post_options (const char **);
943 extern bool c_common_init (void);
944 extern void c_common_finish (void);
945 extern void c_common_parse_file (void);
946 extern FILE *get_dump_info (int, dump_flags_t
*);
947 extern alias_set_type
c_common_get_alias_set (tree
);
948 extern void c_register_builtin_type (tree
, const char*);
949 extern bool c_promoting_integer_type_p (const_tree
);
950 extern bool self_promoting_args_p (const_tree
);
951 extern tree
strip_pointer_operator (tree
);
952 extern tree
strip_pointer_or_array_types (tree
);
953 extern HOST_WIDE_INT
c_common_to_target_charset (HOST_WIDE_INT
);
955 /* This is the basic parsing function. */
956 extern void c_parse_file (void);
958 extern void c_parse_final_cleanups (void);
960 /* These macros provide convenient access to the various _STMT nodes. */
962 /* Nonzero if a given STATEMENT_LIST represents the outermost binding
963 if a statement expression. */
964 #define STATEMENT_LIST_STMT_EXPR(NODE) \
965 TREE_LANG_FLAG_1 (STATEMENT_LIST_CHECK (NODE))
967 /* Nonzero if a label has been added to the statement list. */
968 #define STATEMENT_LIST_HAS_LABEL(NODE) \
969 TREE_LANG_FLAG_3 (STATEMENT_LIST_CHECK (NODE))
971 /* C_MAYBE_CONST_EXPR accessors. */
972 #define C_MAYBE_CONST_EXPR_PRE(NODE) \
973 TREE_OPERAND (C_MAYBE_CONST_EXPR_CHECK (NODE), 0)
974 #define C_MAYBE_CONST_EXPR_EXPR(NODE) \
975 TREE_OPERAND (C_MAYBE_CONST_EXPR_CHECK (NODE), 1)
976 #define C_MAYBE_CONST_EXPR_INT_OPERANDS(NODE) \
977 TREE_LANG_FLAG_0 (C_MAYBE_CONST_EXPR_CHECK (NODE))
978 #define C_MAYBE_CONST_EXPR_NON_CONST(NODE) \
979 TREE_LANG_FLAG_1 (C_MAYBE_CONST_EXPR_CHECK (NODE))
980 #define EXPR_INT_CONST_OPERANDS(EXPR) \
981 (INTEGRAL_TYPE_P (TREE_TYPE (EXPR)) \
982 && (TREE_CODE (EXPR) == INTEGER_CST \
983 || (TREE_CODE (EXPR) == C_MAYBE_CONST_EXPR \
984 && C_MAYBE_CONST_EXPR_INT_OPERANDS (EXPR))))
986 /* In a FIELD_DECL, nonzero if the decl was originally a bitfield. */
987 #define DECL_C_BIT_FIELD(NODE) \
988 (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) == 1)
989 #define SET_DECL_C_BIT_FIELD(NODE) \
990 (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 1)
991 #define CLEAR_DECL_C_BIT_FIELD(NODE) \
992 (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 0)
994 /* True if the decl was an unnamed bitfield. */
995 #define DECL_UNNAMED_BIT_FIELD(NODE) \
996 (DECL_C_BIT_FIELD (NODE) && !DECL_NAME (NODE))
998 extern tree
do_case (location_t
, tree
, tree
);
999 extern tree
build_stmt (location_t
, enum tree_code
, ...);
1000 extern tree
build_real_imag_expr (location_t
, enum tree_code
, tree
);
1002 /* These functions must be defined by each front-end which implements
1003 a variant of the C language. They are used in c-common.c. */
1005 extern tree
build_unary_op (location_t
, enum tree_code
, tree
, bool);
1006 extern tree
build_binary_op (location_t
, enum tree_code
, tree
, tree
, bool);
1007 extern tree
perform_integral_promotions (tree
);
1009 /* These functions must be defined by each front-end which implements
1010 a variant of the C language. They are used by port files. */
1012 extern tree
default_conversion (tree
);
1014 /* Given two integer or real types, return the type for their sum.
1015 Given two compatible ANSI C types, returns the merged type. */
1017 extern tree
common_type (tree
, tree
);
1019 extern tree
decl_constant_value (tree
);
1021 /* Handle increment and decrement of boolean types. */
1022 extern tree
boolean_increment (enum tree_code
, tree
);
1024 extern int case_compare (splay_tree_key
, splay_tree_key
);
1026 extern tree
c_add_case_label (location_t
, splay_tree
, tree
, tree
, tree
);
1027 extern bool c_switch_covers_all_cases_p (splay_tree
, tree
);
1028 extern bool c_block_may_fallthru (const_tree
);
1030 extern tree
build_function_call (location_t
, tree
, tree
);
1032 extern tree
build_function_call_vec (location_t
, vec
<location_t
>, tree
,
1033 vec
<tree
, va_gc
> *, vec
<tree
, va_gc
> *,
1036 extern tree
resolve_overloaded_builtin (location_t
, tree
, vec
<tree
, va_gc
> *);
1038 extern tree
finish_label_address_expr (tree
, location_t
);
1040 /* Same function prototype, but the C and C++ front ends have
1041 different implementations. Used in c-common.c. */
1042 extern tree
lookup_label (tree
);
1043 extern tree
lookup_name (tree
);
1044 extern bool lvalue_p (const_tree
);
1046 extern bool vector_targets_convertible_p (const_tree t1
, const_tree t2
);
1047 extern bool vector_types_convertible_p (const_tree t1
, const_tree t2
, bool emit_lax_note
);
1048 extern tree
c_build_vec_perm_expr (location_t
, tree
, tree
, tree
, bool = true);
1049 extern tree
c_build_vec_convert (location_t
, tree
, location_t
, tree
, bool = true);
1051 extern void init_c_lex (void);
1053 extern void c_cpp_builtins (cpp_reader
*);
1054 extern void c_cpp_builtins_optimize_pragma (cpp_reader
*, tree
, tree
);
1055 extern bool c_cpp_diagnostic (cpp_reader
*, enum cpp_diagnostic_level
,
1056 enum cpp_warning_reason
, rich_location
*,
1057 const char *, va_list *)
1058 ATTRIBUTE_GCC_DIAG(5,0);
1059 extern int c_common_has_attribute (cpp_reader
*, bool);
1060 extern int c_common_has_builtin (cpp_reader
*);
1062 extern bool parse_optimize_options (tree
, bool);
1064 /* Positive if an implicit `extern "C"' scope has just been entered;
1065 negative if such a scope has just been exited. */
1066 extern GTY(()) int pending_lang_change
;
1068 /* Information recorded about each file examined during compilation. */
1072 int time
; /* Time spent in the file. */
1074 /* Flags used only by C++.
1075 INTERFACE_ONLY nonzero means that we are in an "interface" section
1076 of the compiler. INTERFACE_UNKNOWN nonzero means we cannot trust
1077 the value of INTERFACE_ONLY. If INTERFACE_UNKNOWN is zero and
1078 INTERFACE_ONLY is zero, it means that we are responsible for
1079 exporting definitions that others might need. */
1080 short interface_only
;
1081 short interface_unknown
;
1084 struct c_fileinfo
*get_fileinfo (const char *);
1085 extern void dump_time_statistics (void);
1087 extern bool c_dump_tree (void *, tree
);
1089 extern void verify_sequence_points (tree
);
1091 extern tree
fold_offsetof (tree
, tree
= size_type_node
,
1092 tree_code ctx
= ERROR_MARK
);
1094 extern int complete_array_type (tree
*, tree
, bool);
1095 extern void complete_flexible_array_elts (tree
);
1097 extern tree
builtin_type_for_size (int, bool);
1099 extern void c_common_mark_addressable_vec (tree
);
1101 extern void set_underlying_type (tree
);
1102 extern bool user_facing_original_type_p (const_tree
);
1103 extern void record_types_used_by_current_var_decl (tree
);
1104 extern vec
<tree
, va_gc
> *make_tree_vector (void);
1105 extern void release_tree_vector (vec
<tree
, va_gc
> *);
1106 extern vec
<tree
, va_gc
> *make_tree_vector_single (tree
);
1107 extern vec
<tree
, va_gc
> *make_tree_vector_from_list (tree
);
1108 extern vec
<tree
, va_gc
> *make_tree_vector_from_ctor (tree
);
1109 extern vec
<tree
, va_gc
> *make_tree_vector_copy (const vec
<tree
, va_gc
> *);
1111 /* Used for communication between c_common_type_for_mode and
1112 c_register_builtin_type. */
1113 extern GTY(()) tree registered_builtin_types
;
1115 /* Read SOURCE_DATE_EPOCH from environment to have a deterministic
1116 timestamp to replace embedded current dates to get reproducible
1117 results. Returns -1 if SOURCE_DATE_EPOCH is not defined. */
1118 extern time_t cb_get_source_date_epoch (cpp_reader
*pfile
);
1120 /* The value (as a unix timestamp) corresponds to date
1121 "Dec 31 9999 23:59:59 UTC", which is the latest date that __DATE__ and
1122 __TIME__ can store. */
1123 #define MAX_SOURCE_DATE_EPOCH HOST_WIDE_INT_C (253402300799)
1125 /* Callback for libcpp for offering spelling suggestions for misspelled
1127 extern const char *cb_get_suggestion (cpp_reader
*, const char *,
1128 const char *const *);
1130 extern GTY(()) string_concat_db
*g_string_concat_db
;
1132 class substring_loc
;
1133 extern const char *c_get_substring_location (const substring_loc
&substr_loc
,
1134 location_t
*out_loc
);
1136 /* In c-gimplify.c. */
1137 typedef struct bc_state
1141 extern void save_bc_state (bc_state_t
*);
1142 extern void restore_bc_state (bc_state_t
*);
1143 extern tree
c_genericize_control_stmt (tree
*, int *, void *,
1144 walk_tree_fn
, walk_tree_lh
);
1145 extern void c_genericize (tree
);
1146 extern int c_gimplify_expr (tree
*, gimple_seq
*, gimple_seq
*);
1147 extern tree
c_build_bind_expr (location_t
, tree
, tree
);
1150 extern enum cpp_ttype
1151 conflict_marker_get_final_tok_kind (enum cpp_ttype tok1_kind
);
1154 extern void pch_init (void);
1155 extern void pch_cpp_save_state (void);
1156 extern int c_common_valid_pch (cpp_reader
*pfile
, const char *name
, int fd
);
1157 extern void c_common_read_pch (cpp_reader
*pfile
, const char *name
, int fd
,
1159 extern void c_common_write_pch (void);
1160 extern void c_common_no_more_pch (void);
1161 extern void c_common_pch_pragma (cpp_reader
*pfile
, const char *);
1163 /* In *-checksum.c */
1164 extern const unsigned char executable_checksum
[16];
1166 /* In c-cppbuiltin.c */
1167 extern void builtin_define_std (const char *macro
);
1168 extern void builtin_define_with_value (const char *, const char *, int);
1169 extern void builtin_define_with_int_value (const char *, HOST_WIDE_INT
);
1170 extern void builtin_define_type_sizeof (const char *, tree
);
1171 extern void c_stddef_cpp_builtins (void);
1172 extern void fe_file_change (const line_map_ordinary
*);
1173 extern void c_parse_error (const char *, enum cpp_ttype
, tree
, unsigned char,
1174 rich_location
*richloc
);
1176 /* In c-ppoutput.c */
1177 extern void init_pp_output (FILE *);
1178 extern void preprocess_file (cpp_reader
*);
1179 extern void pp_file_change (const line_map_ordinary
*);
1180 extern void pp_dir_change (cpp_reader
*, const char *);
1181 extern bool check_missing_format_attribute (tree
, tree
);
1184 typedef wide_int_bitmask omp_clause_mask
;
1186 #define OMP_CLAUSE_MASK_1 omp_clause_mask (1)
1188 enum c_omp_clause_split
1190 C_OMP_CLAUSE_SPLIT_TARGET
= 0,
1191 C_OMP_CLAUSE_SPLIT_TEAMS
,
1192 C_OMP_CLAUSE_SPLIT_DISTRIBUTE
,
1193 C_OMP_CLAUSE_SPLIT_PARALLEL
,
1194 C_OMP_CLAUSE_SPLIT_FOR
,
1195 C_OMP_CLAUSE_SPLIT_SIMD
,
1196 C_OMP_CLAUSE_SPLIT_COUNT
,
1197 C_OMP_CLAUSE_SPLIT_SECTIONS
= C_OMP_CLAUSE_SPLIT_FOR
,
1198 C_OMP_CLAUSE_SPLIT_TASKLOOP
= C_OMP_CLAUSE_SPLIT_FOR
,
1199 C_OMP_CLAUSE_SPLIT_LOOP
= C_OMP_CLAUSE_SPLIT_FOR
1202 enum c_omp_region_type
1206 C_ORT_DECLARE_SIMD
= 1 << 2,
1207 C_ORT_OMP_DECLARE_SIMD
= C_ORT_OMP
| C_ORT_DECLARE_SIMD
1210 extern tree
c_finish_omp_master (location_t
, tree
);
1211 extern tree
c_finish_omp_taskgroup (location_t
, tree
, tree
);
1212 extern tree
c_finish_omp_critical (location_t
, tree
, tree
, tree
);
1213 extern tree
c_finish_omp_ordered (location_t
, tree
, tree
);
1214 extern void c_finish_omp_barrier (location_t
);
1215 extern tree
c_finish_omp_atomic (location_t
, enum tree_code
, enum tree_code
,
1216 tree
, tree
, tree
, tree
, tree
, bool,
1217 enum omp_memory_order
, bool = false);
1218 extern bool c_omp_depend_t_p (tree
);
1219 extern void c_finish_omp_depobj (location_t
, tree
, enum omp_clause_depend_kind
,
1221 extern void c_finish_omp_flush (location_t
, int);
1222 extern void c_finish_omp_taskwait (location_t
);
1223 extern void c_finish_omp_taskyield (location_t
);
1224 extern tree
c_finish_omp_for (location_t
, enum tree_code
, tree
, tree
, tree
,
1225 tree
, tree
, tree
, tree
, bool);
1226 extern bool c_omp_check_loop_iv (tree
, tree
, walk_tree_lh
);
1227 extern bool c_omp_check_loop_iv_exprs (location_t
, tree
, int, tree
, tree
, tree
,
1229 extern tree
c_finish_oacc_wait (location_t
, tree
, tree
);
1230 extern tree
c_oacc_split_loop_clauses (tree
, tree
*, bool);
1231 extern void c_omp_split_clauses (location_t
, enum tree_code
, omp_clause_mask
,
1233 extern tree
c_omp_declare_simd_clauses_to_numbers (tree
, tree
);
1234 extern void c_omp_declare_simd_clauses_to_decls (tree
, tree
);
1235 extern bool c_omp_predefined_variable (tree
);
1236 extern enum omp_clause_default_kind
c_omp_predetermined_sharing (tree
);
1237 extern enum omp_clause_defaultmap_kind
c_omp_predetermined_mapping (tree
);
1238 extern tree
c_omp_check_context_selector (location_t
, tree
);
1239 extern void c_omp_mark_declare_variant (location_t
, tree
, tree
);
1240 extern const char *c_omp_map_clause_name (tree
, bool);
1241 extern void c_omp_adjust_map_clauses (tree
, bool);
1243 /* Return next tree in the chain for chain_next walking of tree nodes. */
1245 c_tree_chain_next (tree t
)
1247 /* TREE_CHAIN of a type is TYPE_STUB_DECL, which is different
1248 kind of object, never a long chain of nodes. Prefer
1249 TYPE_NEXT_VARIANT for types. */
1250 if (CODE_CONTAINS_STRUCT (TREE_CODE (t
), TS_TYPE_COMMON
))
1251 return TYPE_NEXT_VARIANT (t
);
1252 /* Otherwise, if there is TREE_CHAIN, return it. */
1253 if (CODE_CONTAINS_STRUCT (TREE_CODE (t
), TS_COMMON
))
1254 return TREE_CHAIN (t
);
1258 /* Mask used by tm_stmt_attr. */
1259 #define TM_STMT_ATTR_OUTER 2
1260 #define TM_STMT_ATTR_ATOMIC 4
1261 #define TM_STMT_ATTR_RELAXED 8
1263 /* Mask used by tm_attr_to_mask and tm_mask_to_attr. Note that these
1264 are ordered specifically such that more restrictive attributes are
1265 at lower bit positions. This fact is known by the C++ tm attribute
1266 inheritance code such that least bit extraction (mask & -mask) results
1267 in the most restrictive attribute. */
1268 #define TM_ATTR_SAFE 1
1269 #define TM_ATTR_CALLABLE 2
1270 #define TM_ATTR_PURE 4
1271 #define TM_ATTR_IRREVOCABLE 8
1272 #define TM_ATTR_MAY_CANCEL_OUTER 16
1274 /* A suffix-identifier value doublet that represents user-defined literals
1276 enum overflow_type
{
1282 struct GTY(()) tree_userdef_literal
{
1283 struct tree_base base
;
1287 enum overflow_type overflow
;
1290 #define USERDEF_LITERAL_SUFFIX_ID(NODE) \
1291 (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->suffix_id)
1293 #define USERDEF_LITERAL_VALUE(NODE) \
1294 (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->value)
1296 #define USERDEF_LITERAL_OVERFLOW(NODE) \
1297 (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->overflow)
1299 #define USERDEF_LITERAL_NUM_STRING(NODE) \
1300 (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->num_string)
1302 #define USERDEF_LITERAL_TYPE(NODE) \
1303 (TREE_TYPE (USERDEF_LITERAL_VALUE (NODE)))
1305 extern tree
build_userdef_literal (tree suffix_id
, tree value
,
1306 enum overflow_type overflow
,
1310 /* WHILE_STMT accessors. These give access to the condition of the
1311 while statement and the body of the while statement, respectively. */
1312 #define WHILE_COND(NODE) TREE_OPERAND (WHILE_STMT_CHECK (NODE), 0)
1313 #define WHILE_BODY(NODE) TREE_OPERAND (WHILE_STMT_CHECK (NODE), 1)
1315 /* DO_STMT accessors. These give access to the condition of the do
1316 statement and the body of the do statement, respectively. */
1317 #define DO_COND(NODE) TREE_OPERAND (DO_STMT_CHECK (NODE), 0)
1318 #define DO_BODY(NODE) TREE_OPERAND (DO_STMT_CHECK (NODE), 1)
1320 /* FOR_STMT accessors. These give access to the init statement,
1321 condition, update expression, and body of the for statement,
1323 #define FOR_INIT_STMT(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 0)
1324 #define FOR_COND(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 1)
1325 #define FOR_EXPR(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 2)
1326 #define FOR_BODY(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 3)
1327 #define FOR_SCOPE(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 4)
1329 #define SWITCH_STMT_COND(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 0)
1330 #define SWITCH_STMT_BODY(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 1)
1331 #define SWITCH_STMT_TYPE(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 2)
1332 #define SWITCH_STMT_SCOPE(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 3)
1333 /* True if there are case labels for all possible values of switch cond, either
1334 because there is a default: case label or because the case label ranges cover
1336 #define SWITCH_STMT_ALL_CASES_P(NODE) \
1337 TREE_LANG_FLAG_0 (SWITCH_STMT_CHECK (NODE))
1338 /* True if the body of a switch stmt contains no BREAK_STMTs. */
1339 #define SWITCH_STMT_NO_BREAK_P(NODE) \
1340 TREE_LANG_FLAG_2 (SWITCH_STMT_CHECK (NODE))
1343 /* Nonzero if NODE is the target for genericization of 'break' stmts. */
1344 #define LABEL_DECL_BREAK(NODE) \
1345 DECL_LANG_FLAG_0 (LABEL_DECL_CHECK (NODE))
1347 /* Nonzero if NODE is the target for genericization of 'continue' stmts. */
1348 #define LABEL_DECL_CONTINUE(NODE) \
1349 DECL_LANG_FLAG_1 (LABEL_DECL_CHECK (NODE))
1351 extern bool convert_vector_to_array_for_subscript (location_t
, tree
*, tree
);
1353 /* Possibe cases of scalar_to_vector conversion. */
1355 stv_error
, /* Error occurred. */
1356 stv_nothing
, /* Nothing happened. */
1357 stv_firstarg
, /* First argument must be expanded. */
1358 stv_secondarg
/* Second argument must be expanded. */
1361 extern enum stv_conv
scalar_to_vector (location_t loc
, enum tree_code code
,
1362 tree op0
, tree op1
, bool);
1364 extern tree
find_inv_trees (tree
*, int *, void *);
1365 extern tree
replace_inv_trees (tree
*, int *, void *);
1367 extern bool reject_gcc_builtin (const_tree
, location_t
= UNKNOWN_LOCATION
);
1368 extern bool valid_array_size_p (location_t
, const_tree
, tree
, bool = true);
1369 extern void invalid_array_size_error (location_t
, cst_size_error
,
1370 const_tree
, const_tree
);
1373 extern void constant_expression_warning (tree
);
1374 extern void constant_expression_error (tree
);
1375 extern void overflow_warning (location_t
, tree
, tree
= NULL_TREE
);
1376 extern void warn_logical_operator (location_t
, enum tree_code
, tree
,
1377 enum tree_code
, tree
, enum tree_code
, tree
);
1378 extern void warn_tautological_cmp (const op_location_t
&, enum tree_code
,
1380 extern void warn_logical_not_parentheses (location_t
, enum tree_code
, tree
,
1382 extern bool warn_if_unused_value (const_tree
, location_t
, bool = false);
1383 extern bool strict_aliasing_warning (location_t
, tree
, tree
);
1384 extern void sizeof_pointer_memaccess_warning (location_t
*, tree
,
1385 vec
<tree
, va_gc
> *, tree
*,
1386 bool (*) (tree
, tree
));
1387 extern void check_main_parameter_types (tree decl
);
1388 extern void warnings_for_convert_and_check (location_t
, tree
, tree
, tree
);
1389 extern void c_do_switch_warnings (splay_tree
, location_t
, tree
, tree
, bool);
1390 extern void warn_for_omitted_condop (location_t
, tree
);
1391 extern bool warn_for_restrict (unsigned, tree
*, unsigned);
1392 extern void warn_for_address_or_pointer_of_packed_member (tree
, tree
);
1393 extern void warn_parm_array_mismatch (location_t
, tree
, tree
);
1394 extern void maybe_warn_sizeof_array_div (location_t
, tree
, tree
, tree
, tree
);
1396 /* Places where an lvalue, or modifiable lvalue, may be required.
1397 Used to select diagnostic messages in lvalue_error and
1407 extern void lvalue_error (location_t
, enum lvalue_use
);
1408 extern void invalid_indirection_error (location_t
, tree
, ref_operator
);
1409 extern void readonly_error (location_t
, tree
, enum lvalue_use
);
1410 extern void warn_array_subscript_with_type_char (location_t
, tree
);
1411 extern void warn_about_parentheses (location_t
,
1413 enum tree_code
, tree
,
1414 enum tree_code
, tree
);
1415 extern void warn_for_unused_label (tree label
);
1416 extern void warn_for_div_by_zero (location_t
, tree divisor
);
1417 extern void warn_for_memset (location_t
, tree
, tree
, int);
1418 extern void warn_for_sign_compare (location_t
,
1419 tree orig_op0
, tree orig_op1
,
1422 enum tree_code resultcode
);
1423 extern void do_warn_double_promotion (tree
, tree
, tree
, const char *,
1425 extern void do_warn_unused_parameter (tree
);
1426 extern void record_locally_defined_typedef (tree
);
1427 extern void maybe_record_typedef_use (tree
);
1428 extern void maybe_warn_unused_local_typedefs (void);
1429 extern void maybe_warn_bool_compare (location_t
, enum tree_code
, tree
, tree
);
1430 extern bool maybe_warn_shift_overflow (location_t
, tree
, tree
);
1431 extern void warn_duplicated_cond_add_or_warn (location_t
, tree
, vec
<tree
> **);
1432 extern bool diagnose_mismatched_attributes (tree
, tree
);
1433 extern tree
do_warn_duplicated_branches_r (tree
*, int *, void *);
1434 extern void warn_for_multistatement_macros (location_t
, location_t
,
1435 location_t
, enum rid
);
1437 /* In c-attribs.c. */
1438 extern bool attribute_takes_identifier_p (const_tree
);
1439 extern tree
handle_deprecated_attribute (tree
*, tree
, tree
, int, bool *);
1440 extern tree
handle_unused_attribute (tree
*, tree
, tree
, int, bool *);
1441 extern tree
handle_fallthrough_attribute (tree
*, tree
, tree
, int, bool *);
1442 extern int parse_tm_stmt_attr (tree
, int);
1443 extern int tm_attr_to_mask (tree
);
1444 extern tree
tm_mask_to_attr (int);
1445 extern tree
find_tm_attribute (tree
);
1446 extern const struct attribute_spec::exclusions attr_cold_hot_exclusions
[];
1447 extern const struct attribute_spec::exclusions attr_noreturn_exclusions
[];
1448 extern tree
handle_noreturn_attribute (tree
*, tree
, tree
, int, bool *);
1449 extern bool has_attribute (location_t
, tree
, tree
, tree (*)(tree
));
1450 extern tree
build_attr_access_from_parms (tree
, bool);
1452 /* In c-format.c. */
1453 extern bool valid_format_string_type_p (tree
);
1455 /* A bitmap of flags to positional_argument. */
1457 /* Consider positional attribute argument value zero valid. */
1459 /* Consider positional attribute argument value valid if it refers
1460 to the ellipsis (i.e., beyond the last typed argument). */
1464 extern tree
positional_argument (const_tree
, const_tree
, tree
, tree_code
,
1465 int = 0, int = posargflags ());
1467 extern enum flt_eval_method
1468 excess_precision_mode_join (enum flt_eval_method
, enum flt_eval_method
);
1470 extern int c_flt_eval_method (bool ts18661_p
);
1471 extern void add_no_sanitize_value (tree node
, unsigned int flags
);
1473 extern void maybe_add_include_fixit (rich_location
*, const char *, bool);
1474 extern void maybe_suggest_missing_token_insertion (rich_location
*richloc
,
1475 enum cpp_ttype token_type
,
1476 location_t prev_token_loc
);
1477 extern tree
braced_lists_to_strings (tree
, tree
);
1480 namespace selftest
{
1481 /* Declarations for specific families of tests within c-family,
1482 by source file, in alphabetical order. */
1483 extern void c_format_c_tests (void);
1484 extern void c_indentation_c_tests (void);
1485 extern void c_pretty_print_c_tests (void);
1486 extern void c_spellcheck_cc_tests (void);
1488 /* The entrypoint for running all of the above tests. */
1489 extern void c_family_tests (void);
1490 } // namespace selftest
1491 #endif /* #if CHECKING_P */
1493 #endif /* ! GCC_C_COMMON_H */