1 /* Definitions for c-common.c.
2 Copyright (C) 1987, 1993, 1994, 1995, 1997, 1998,
3 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009
4 Free Software Foundation, Inc.
6 This file is part of GCC.
8 GCC is free software; you can redistribute it and/or modify it under
9 the terms of the GNU General Public License as published by the Free
10 Software Foundation; either version 3, or (at your option) any later
13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
18 You should have received a copy of the GNU General Public License
19 along with GCC; see the file COPYING3. If not see
20 <http://www.gnu.org/licenses/>. */
22 #ifndef GCC_C_COMMON_H
23 #define GCC_C_COMMON_H
25 #include "splay-tree.h"
29 /* In order for the format checking to accept the C frontend
30 diagnostic framework extensions, you must include this file before
31 toplev.h, not after. The C front end formats are a subset of those
32 for C++, so they are the appropriate set to use in common code;
33 cp-tree.h overrides this for C++. */
34 #ifndef GCC_DIAG_STYLE
35 #define GCC_DIAG_STYLE __gcc_cdiag__
37 #include "diagnostic-core.h"
39 /* Usage of TREE_LANG_FLAG_?:
40 0: TREE_NEGATED_INT (in INTEGER_CST).
41 IDENTIFIER_MARKED (used by search routines).
42 DECL_PRETTY_FUNCTION_P (in VAR_DECL)
43 C_MAYBE_CONST_EXPR_INT_OPERANDS (in C_MAYBE_CONST_EXPR, for C)
44 1: C_DECLARED_LABEL_FLAG (in LABEL_DECL)
45 STATEMENT_LIST_STMT_EXPR (in STATEMENT_LIST)
46 C_MAYBE_CONST_EXPR_NON_CONST (in C_MAYBE_CONST_EXPR, for C)
48 3: STATEMENT_LIST_HAS_LABEL (in STATEMENT_LIST)
52 /* Reserved identifiers. This is the union of all the keywords for C,
53 C++, and Objective-C. All the type modifiers have to be in one
54 block at the beginning, because they are used as mask bits. There
55 are 27 type modifiers; if we add many more we will have to redesign
56 the mask mechanism. */
61 /* C, in empirical order of frequency. */
63 RID_UNSIGNED
, RID_LONG
, RID_CONST
, RID_EXTERN
,
64 RID_REGISTER
, RID_TYPEDEF
, RID_SHORT
, RID_INLINE
,
65 RID_VOLATILE
, RID_SIGNED
, RID_AUTO
, RID_RESTRICT
,
68 RID_COMPLEX
, RID_THREAD
, RID_SAT
,
71 RID_FRIEND
, RID_VIRTUAL
, RID_EXPLICIT
, RID_EXPORT
, RID_MUTABLE
,
74 RID_IN
, RID_OUT
, RID_INOUT
, RID_BYCOPY
, RID_BYREF
, RID_ONEWAY
,
76 /* C (reserved and imaginary types not implemented, so any use is a
81 RID_INT
, RID_CHAR
, RID_FLOAT
, RID_DOUBLE
, RID_VOID
,
83 RID_ENUM
, RID_STRUCT
, RID_UNION
, RID_IF
, RID_ELSE
,
84 RID_WHILE
, RID_DO
, RID_FOR
, RID_SWITCH
, RID_CASE
,
85 RID_DEFAULT
, RID_BREAK
, RID_CONTINUE
, RID_RETURN
, RID_GOTO
,
89 RID_ASM
, RID_TYPEOF
, RID_ALIGNOF
, RID_ATTRIBUTE
, RID_VA_ARG
,
90 RID_EXTENSION
, RID_IMAGPART
, RID_REALPART
, RID_LABEL
, RID_CHOOSE_EXPR
,
91 RID_TYPES_COMPATIBLE_P
,
92 RID_DFLOAT32
, RID_DFLOAT64
, RID_DFLOAT128
,
95 /* This means to warn that this is a C++ keyword, and then treat it
96 as a normal identifier. */
99 /* Too many ways of getting the name of a function as a string */
100 RID_FUNCTION_NAME
, RID_PRETTY_FUNCTION_NAME
, RID_C99_FUNCTION_NAME
,
103 RID_BOOL
, RID_WCHAR
, RID_CLASS
,
104 RID_PUBLIC
, RID_PRIVATE
, RID_PROTECTED
,
105 RID_TEMPLATE
, RID_NULL
, RID_CATCH
,
106 RID_DELETE
, RID_FALSE
, RID_NAMESPACE
,
107 RID_NEW
, RID_OFFSETOF
, RID_OPERATOR
,
108 RID_THIS
, RID_THROW
, RID_TRUE
,
109 RID_TRY
, RID_TYPENAME
, RID_TYPEID
,
110 RID_USING
, RID_CHAR16
, RID_CHAR32
,
113 RID_CONSTCAST
, RID_DYNCAST
, RID_REINTCAST
, RID_STATCAST
,
116 RID_HAS_NOTHROW_ASSIGN
, RID_HAS_NOTHROW_CONSTRUCTOR
,
117 RID_HAS_NOTHROW_COPY
, RID_HAS_TRIVIAL_ASSIGN
,
118 RID_HAS_TRIVIAL_CONSTRUCTOR
, RID_HAS_TRIVIAL_COPY
,
119 RID_HAS_TRIVIAL_DESTRUCTOR
, RID_HAS_VIRTUAL_DESTRUCTOR
,
120 RID_IS_ABSTRACT
, RID_IS_BASE_OF
,
121 RID_IS_CONVERTIBLE_TO
, RID_IS_CLASS
,
122 RID_IS_EMPTY
, RID_IS_ENUM
,
123 RID_IS_POD
, RID_IS_POLYMORPHIC
,
124 RID_IS_STD_LAYOUT
, RID_IS_TRIVIAL
,
128 RID_CONSTEXPR
, RID_DECLTYPE
, RID_NOEXCEPT
, RID_NULLPTR
, RID_STATIC_ASSERT
,
131 RID_AT_ENCODE
, RID_AT_END
,
132 RID_AT_CLASS
, RID_AT_ALIAS
, RID_AT_DEFS
,
133 RID_AT_PRIVATE
, RID_AT_PROTECTED
, RID_AT_PUBLIC
,
134 RID_AT_PROTOCOL
, RID_AT_SELECTOR
,
135 RID_AT_THROW
, RID_AT_TRY
, RID_AT_CATCH
,
136 RID_AT_FINALLY
, RID_AT_SYNCHRONIZED
,
138 RID_AT_IMPLEMENTATION
,
140 /* Named address support, mapping the keyword to a particular named address
141 number. Named address space 0 is reserved for the generic address. If
142 there are more than 254 named addresses, the addr_space_t type will need
143 to be grown from an unsigned char to unsigned short. */
144 RID_ADDR_SPACE_0
, /* generic address */
161 RID_FIRST_ADDR_SPACE
= RID_ADDR_SPACE_0
,
162 RID_LAST_ADDR_SPACE
= RID_ADDR_SPACE_15
,
166 RID_FIRST_MODIFIER
= RID_STATIC
,
167 RID_LAST_MODIFIER
= RID_ONEWAY
,
169 RID_FIRST_CXX0X
= RID_CONSTEXPR
,
170 RID_LAST_CXX0X
= RID_STATIC_ASSERT
,
171 RID_FIRST_AT
= RID_AT_ENCODE
,
172 RID_LAST_AT
= RID_AT_IMPLEMENTATION
,
173 RID_FIRST_PQ
= RID_IN
,
174 RID_LAST_PQ
= RID_ONEWAY
177 #define OBJC_IS_AT_KEYWORD(rid) \
178 ((unsigned int) (rid) >= (unsigned int) RID_FIRST_AT && \
179 (unsigned int) (rid) <= (unsigned int) RID_LAST_AT)
181 #define OBJC_IS_PQ_KEYWORD(rid) \
182 ((unsigned int) (rid) >= (unsigned int) RID_FIRST_PQ && \
183 (unsigned int) (rid) <= (unsigned int) RID_LAST_PQ)
185 /* The elements of `ridpointers' are identifier nodes for the reserved
186 type names and storage classes. It is indexed by a RID_... value. */
187 extern GTY ((length ("(int) RID_MAX"))) tree
*ridpointers
;
189 /* Standard named or nameless data types of the C compiler. */
196 CTI_UNDERLYING_WCHAR_TYPE
,
198 CTI_SIGNED_SIZE_TYPE
, /* For format checking only. */
199 CTI_UNSIGNED_PTRDIFF_TYPE
, /* For format checking only. */
202 CTI_WIDEST_INT_LIT_TYPE
,
203 CTI_WIDEST_UINT_LIT_TYPE
,
205 /* Types for <stdint.h>, that may not be defined on all
217 CTI_INT_LEAST16_TYPE
,
218 CTI_INT_LEAST32_TYPE
,
219 CTI_INT_LEAST64_TYPE
,
220 CTI_UINT_LEAST8_TYPE
,
221 CTI_UINT_LEAST16_TYPE
,
222 CTI_UINT_LEAST32_TYPE
,
223 CTI_UINT_LEAST64_TYPE
,
229 CTI_UINT_FAST16_TYPE
,
230 CTI_UINT_FAST32_TYPE
,
231 CTI_UINT_FAST64_TYPE
,
236 CTI_CHAR16_ARRAY_TYPE
,
237 CTI_CHAR32_ARRAY_TYPE
,
238 CTI_WCHAR_ARRAY_TYPE
,
241 CTI_CONST_STRING_TYPE
,
243 /* Type for boolean expressions (bool in C++, int in C). */
246 CTI_TRUTHVALUE_FALSE
,
248 CTI_DEFAULT_FUNCTION_TYPE
,
250 /* These are not types, but we have to look them up all the time. */
251 CTI_FUNCTION_NAME_DECL
,
252 CTI_PRETTY_FUNCTION_NAME_DECL
,
253 CTI_C99_FUNCTION_NAME_DECL
,
254 CTI_SAVED_FUNCTION_NAME_DECLS
,
263 #define C_CPP_HASHNODE(id) \
264 (&(((struct c_common_identifier *) (id))->node))
265 #define C_RID_CODE(id) \
266 ((enum rid) (((struct c_common_identifier *) (id))->node.rid_code))
267 #define C_SET_RID_CODE(id, code) \
268 (((struct c_common_identifier *) (id))->node.rid_code = (unsigned char) code)
270 /* Identifier part common to the C front ends. Inherits from
271 tree_identifier, despite appearances. */
272 struct GTY(()) c_common_identifier
{
273 struct tree_common common
;
274 struct cpp_hashnode node
;
277 /* An entry in the reserved keyword table. */
279 struct c_common_resword
281 const char *const word
;
282 ENUM_BITFIELD(rid
) const rid
: 16;
283 const unsigned int disable
: 16;
286 /* Disable mask. Keywords are disabled if (reswords[i].disable &
287 mask) is _true_. Thus for keywords which are present in all
288 languages the disable field is zero. */
290 #define D_CONLY 0x001 /* C only (not in C++). */
291 #define D_CXXONLY 0x002 /* C++ only (not in C). */
292 #define D_C99 0x004 /* In C, C99 only. */
293 #define D_CXX0X 0x008 /* In C++, C++0X only. */
294 #define D_EXT 0x010 /* GCC extension. */
295 #define D_EXT89 0x020 /* GCC extension incorporated in C99. */
296 #define D_ASM 0x040 /* Disabled by -fno-asm. */
297 #define D_OBJC 0x080 /* In Objective C and neither C nor C++. */
298 #define D_CXX_OBJC 0x100 /* In Objective C, and C++, but not C. */
299 #define D_CXXWARN 0x200 /* In C warn with -Wcxx-compat. */
301 /* The reserved keyword table. */
302 extern const struct c_common_resword c_common_reswords
[];
304 /* The number of items in the reserved keyword table. */
305 extern const unsigned int num_c_common_reswords
;
307 #define char16_type_node c_global_trees[CTI_CHAR16_TYPE]
308 #define char32_type_node c_global_trees[CTI_CHAR32_TYPE]
309 #define wchar_type_node c_global_trees[CTI_WCHAR_TYPE]
310 #define underlying_wchar_type_node c_global_trees[CTI_UNDERLYING_WCHAR_TYPE]
311 #define wint_type_node c_global_trees[CTI_WINT_TYPE]
312 #define signed_size_type_node c_global_trees[CTI_SIGNED_SIZE_TYPE]
313 #define unsigned_ptrdiff_type_node c_global_trees[CTI_UNSIGNED_PTRDIFF_TYPE]
314 #define intmax_type_node c_global_trees[CTI_INTMAX_TYPE]
315 #define uintmax_type_node c_global_trees[CTI_UINTMAX_TYPE]
316 #define widest_integer_literal_type_node c_global_trees[CTI_WIDEST_INT_LIT_TYPE]
317 #define widest_unsigned_literal_type_node c_global_trees[CTI_WIDEST_UINT_LIT_TYPE]
319 #define sig_atomic_type_node c_global_trees[CTI_SIG_ATOMIC_TYPE]
320 #define int8_type_node c_global_trees[CTI_INT8_TYPE]
321 #define int16_type_node c_global_trees[CTI_INT16_TYPE]
322 #define int32_type_node c_global_trees[CTI_INT32_TYPE]
323 #define int64_type_node c_global_trees[CTI_INT64_TYPE]
324 #define uint8_type_node c_global_trees[CTI_UINT8_TYPE]
325 #define uint16_type_node c_global_trees[CTI_UINT16_TYPE]
326 #define c_uint32_type_node c_global_trees[CTI_UINT32_TYPE]
327 #define c_uint64_type_node c_global_trees[CTI_UINT64_TYPE]
328 #define int_least8_type_node c_global_trees[CTI_INT_LEAST8_TYPE]
329 #define int_least16_type_node c_global_trees[CTI_INT_LEAST16_TYPE]
330 #define int_least32_type_node c_global_trees[CTI_INT_LEAST32_TYPE]
331 #define int_least64_type_node c_global_trees[CTI_INT_LEAST64_TYPE]
332 #define uint_least8_type_node c_global_trees[CTI_UINT_LEAST8_TYPE]
333 #define uint_least16_type_node c_global_trees[CTI_UINT_LEAST16_TYPE]
334 #define uint_least32_type_node c_global_trees[CTI_UINT_LEAST32_TYPE]
335 #define uint_least64_type_node c_global_trees[CTI_UINT_LEAST64_TYPE]
336 #define int_fast8_type_node c_global_trees[CTI_INT_FAST8_TYPE]
337 #define int_fast16_type_node c_global_trees[CTI_INT_FAST16_TYPE]
338 #define int_fast32_type_node c_global_trees[CTI_INT_FAST32_TYPE]
339 #define int_fast64_type_node c_global_trees[CTI_INT_FAST64_TYPE]
340 #define uint_fast8_type_node c_global_trees[CTI_UINT_FAST8_TYPE]
341 #define uint_fast16_type_node c_global_trees[CTI_UINT_FAST16_TYPE]
342 #define uint_fast32_type_node c_global_trees[CTI_UINT_FAST32_TYPE]
343 #define uint_fast64_type_node c_global_trees[CTI_UINT_FAST64_TYPE]
344 #define intptr_type_node c_global_trees[CTI_INTPTR_TYPE]
345 #define uintptr_type_node c_global_trees[CTI_UINTPTR_TYPE]
347 #define truthvalue_type_node c_global_trees[CTI_TRUTHVALUE_TYPE]
348 #define truthvalue_true_node c_global_trees[CTI_TRUTHVALUE_TRUE]
349 #define truthvalue_false_node c_global_trees[CTI_TRUTHVALUE_FALSE]
351 #define char_array_type_node c_global_trees[CTI_CHAR_ARRAY_TYPE]
352 #define char16_array_type_node c_global_trees[CTI_CHAR16_ARRAY_TYPE]
353 #define char32_array_type_node c_global_trees[CTI_CHAR32_ARRAY_TYPE]
354 #define wchar_array_type_node c_global_trees[CTI_WCHAR_ARRAY_TYPE]
355 #define int_array_type_node c_global_trees[CTI_INT_ARRAY_TYPE]
356 #define string_type_node c_global_trees[CTI_STRING_TYPE]
357 #define const_string_type_node c_global_trees[CTI_CONST_STRING_TYPE]
359 #define default_function_type c_global_trees[CTI_DEFAULT_FUNCTION_TYPE]
361 #define function_name_decl_node c_global_trees[CTI_FUNCTION_NAME_DECL]
362 #define pretty_function_name_decl_node c_global_trees[CTI_PRETTY_FUNCTION_NAME_DECL]
363 #define c99_function_name_decl_node c_global_trees[CTI_C99_FUNCTION_NAME_DECL]
364 #define saved_function_name_decls c_global_trees[CTI_SAVED_FUNCTION_NAME_DECLS]
366 /* A node for `((void) 0)'. */
367 #define void_zero_node c_global_trees[CTI_VOID_ZERO]
369 /* The node for C++ `__null'. */
370 #define null_node c_global_trees[CTI_NULL]
372 extern GTY(()) tree c_global_trees
[CTI_MAX
];
374 /* In a RECORD_TYPE, a sorted array of the fields of the type, not a
375 tree for size reasons. */
376 struct GTY((variable_size
)) sorted_fields_type
{
378 tree
GTY((length ("%h.len"))) elts
[1];
381 /* Mark which labels are explicitly declared.
382 These may be shadowed, and may be referenced from nested functions. */
383 #define C_DECLARED_LABEL_FLAG(label) TREE_LANG_FLAG_1 (label)
385 typedef enum c_language_kind
387 clk_c
= 0, /* C90, C94 or C99 */
388 clk_objc
= 1, /* clk_c with ObjC features. */
389 clk_cxx
= 2, /* ANSI/ISO C++ */
390 clk_objcxx
= 3 /* clk_cxx with ObjC features. */
394 /* To test for a specific language use c_language, defined by each
395 front end. For "ObjC features" or "not C++" use the macros. */
396 extern c_language_kind c_language
;
398 #define c_dialect_cxx() ((c_language & clk_cxx) != 0)
399 #define c_dialect_objc() ((c_language & clk_objc) != 0)
401 /* The various name of operator that appears in error messages. */
402 typedef enum ref_operator
{
411 /* implicit conversion */
412 RO_IMPLICIT_CONVERSION
415 /* Information about a statement tree. */
417 struct GTY(()) stmt_tree_s
{
418 /* The current statement list being collected. */
419 tree x_cur_stmt_list
;
421 /* In C++, Nonzero if we should treat statements as full
422 expressions. In particular, this variable is no-zero if at the
423 end of a statement we should destroy any temporaries created
424 during that statement. Similarly, if, at the end of a block, we
425 should destroy any local variables in this block. Normally, this
426 variable is nonzero, since those are the normal semantics of
429 However, in order to represent aggregate initialization code as
430 tree structure, we use statement-expressions. The statements
431 within the statement expression should not result in cleanups
432 being run until the entire enclosing statement is complete.
434 This flag has no effect in C. */
435 int stmts_are_full_exprs_p
;
438 typedef struct stmt_tree_s
*stmt_tree
;
440 /* Global state pertinent to the current function. Some C dialects
441 extend this structure with additional fields. */
443 struct GTY(()) c_language_function
{
444 /* While we are parsing the function, this contains information
445 about the statement-tree that we are building. */
446 struct stmt_tree_s x_stmt_tree
;
449 /* When building a statement-tree, this is the current statement list
450 being collected. It's TREE_CHAIN is a back-pointer to the previous
453 #define cur_stmt_list (current_stmt_tree ()->x_cur_stmt_list)
455 /* Language-specific hooks. */
457 /* If non-NULL, this function is called after a precompile header file
459 extern void (*lang_post_pch_load
) (void);
461 extern void push_file_scope (void);
462 extern void pop_file_scope (void);
463 extern stmt_tree
current_stmt_tree (void);
464 extern tree
push_stmt_list (void);
465 extern tree
pop_stmt_list (tree
);
466 extern tree
add_stmt (tree
);
467 extern void push_cleanup (tree
, tree
, bool);
468 extern tree
pushdecl_top_level (tree
);
469 extern tree
pushdecl (tree
);
470 extern tree
build_modify_expr (location_t
, tree
, tree
, enum tree_code
,
471 location_t
, tree
, tree
);
472 extern tree
build_indirect_ref (location_t
, tree
, ref_operator
);
474 extern int c_expand_decl (tree
);
476 extern int field_decl_cmp (const void *, const void *);
477 extern void resort_sorted_fields (void *, void *, gt_pointer_operator
,
479 extern bool has_c_linkage (const_tree decl
);
481 /* Switches common to the C front ends. */
483 /* Nonzero means don't output line number information. */
485 extern char flag_no_line_commands
;
487 /* Nonzero causes -E output not to be done, but directives such as
488 #define that have side effects are still obeyed. */
490 extern char flag_no_output
;
492 /* Nonzero means dump macros in some fashion; contains the 'D', 'M',
493 'N' or 'U' of the command line switch. */
495 extern char flag_dump_macros
;
497 /* Nonzero means pass #include lines through to the output. */
499 extern char flag_dump_includes
;
501 /* Nonzero means process PCH files while preprocessing. */
503 extern bool flag_pch_preprocess
;
505 /* The file name to which we should write a precompiled header, or
506 NULL if no header will be written in this compile. */
508 extern const char *pch_file
;
510 /* Nonzero if an ISO standard was selected. It rejects macros in the
515 /* Warn about #pragma directives that are not recognized. */
517 extern int warn_unknown_pragmas
; /* Tri state variable. */
519 /* Warn about format/argument anomalies in calls to formatted I/O functions
520 (*printf, *scanf, strftime, strfmon, etc.). */
522 extern int warn_format
;
525 /* C/ObjC language option variables. */
528 /* Nonzero means allow type mismatches in conditional expressions;
529 just make their values `void'. */
531 extern int flag_cond_mismatch
;
533 /* Nonzero means enable C89 Amendment 1 features. */
535 extern int flag_isoc94
;
537 /* Nonzero means use the ISO C99 (or C1X) dialect of C. */
539 extern int flag_isoc99
;
541 /* Nonzero means use the ISO C1X dialect of C. */
543 extern int flag_isoc1x
;
545 /* Nonzero means that we have builtin functions, and main is an int. */
547 extern int flag_hosted
;
549 /* ObjC language option variables. */
552 /* Tells the compiler that this is a special run. Do not perform any
553 compiling, instead we are to test some platform dependent features
554 and output a C header file with appropriate definitions. */
556 extern int print_struct_values
;
558 /* ???. Undocumented. */
560 extern const char *constant_string_class_name
;
563 /* C++ language option variables. */
566 /* Nonzero means generate separate instantiation control files and
567 juggle them at link time. */
569 extern int flag_use_repository
;
571 /* The supported C++ dialects. */
576 /* Experimental features that are likely to become part of
581 /* The C++ dialect being used. C++98 is the default. */
582 extern enum cxx_dialect cxx_dialect
;
584 /* Maximum template instantiation depth. This limit is rather
585 arbitrary, but it exists to limit the time it takes to notice
586 infinite template instantiations. */
588 extern int max_tinst_depth
;
590 /* Nonzero means that we should not issue warnings about problems that
591 occur when the code is executed, because the code being processed
592 is not expected to be executed. This is set during parsing. This
593 is used for cases like sizeof() and "0 ? a : b". This is a count,
594 not a bool, because unexecuted expressions can nest. */
596 extern int c_inhibit_evaluation_warnings
;
598 /* Whether lexing has been completed, so subsequent preprocessor
599 errors should use the compiler's input_location. */
601 extern bool done_lexing
;
603 /* C types are partitioned into three subsets: object, function, and
605 #define C_TYPE_OBJECT_P(type) \
606 (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type))
608 #define C_TYPE_INCOMPLETE_P(type) \
609 (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type) == 0)
611 #define C_TYPE_FUNCTION_P(type) \
612 (TREE_CODE (type) == FUNCTION_TYPE)
614 /* For convenience we define a single macro to identify the class of
615 object or incomplete types. */
616 #define C_TYPE_OBJECT_OR_INCOMPLETE_P(type) \
617 (!C_TYPE_FUNCTION_P (type))
619 /* Attribute table common to the C front ends. */
620 extern const struct attribute_spec c_common_attribute_table
[];
621 extern const struct attribute_spec c_common_format_attribute_table
[];
623 /* Pointer to function to lazily generate the VAR_DECL for __FUNCTION__ etc.
624 ID is the identifier to use, NAME is the string.
625 TYPE_DEP indicates whether it depends on type of the function or not
626 (i.e. __PRETTY_FUNCTION__). */
628 extern tree (*make_fname_decl
) (location_t
, tree
, int);
630 /* In c-decl.c and cp/tree.c. FIXME. */
631 extern void c_register_addr_space (const char *str
, addr_space_t as
);
634 extern const char *c_addr_space_name (addr_space_t as
);
635 extern tree
identifier_global_value (tree
);
636 extern void record_builtin_type (enum rid
, const char *, tree
);
637 extern tree
build_void_list_node (void);
638 extern void start_fname_decls (void);
639 extern void finish_fname_decls (void);
640 extern const char *fname_as_string (int);
641 extern tree
fname_decl (location_t
, unsigned, tree
);
643 extern void check_function_arguments (tree
, int, tree
*, tree
);
644 extern void check_function_arguments_recurse (void (*)
646 unsigned HOST_WIDE_INT
),
648 unsigned HOST_WIDE_INT
);
649 extern bool check_builtin_function_arguments (tree
, int, tree
*);
650 extern void check_function_format (tree
, int, tree
*);
651 extern void set_Wformat (int);
652 extern tree
handle_format_attribute (tree
*, tree
, tree
, int, bool *);
653 extern tree
handle_format_arg_attribute (tree
*, tree
, tree
, int, bool *);
654 extern bool attribute_takes_identifier_p (const_tree
);
655 extern int c_common_handle_option (size_t code
, const char *arg
, int value
, int kind
);
656 extern bool c_common_missing_argument (const char *opt
, size_t code
);
657 extern tree
c_common_type_for_mode (enum machine_mode
, int);
658 extern tree
c_common_type_for_size (unsigned int, int);
659 extern tree
c_common_fixed_point_type_for_size (unsigned int, unsigned int,
661 extern tree
c_common_unsigned_type (tree
);
662 extern tree
c_common_signed_type (tree
);
663 extern tree
c_common_signed_or_unsigned_type (int, tree
);
664 extern tree
c_build_bitfield_integer_type (unsigned HOST_WIDE_INT
, int);
665 extern bool decl_with_nonnull_addr_p (const_tree
);
666 extern tree
c_fully_fold (tree
, bool, bool *);
667 extern tree
decl_constant_value_for_optimization (tree
);
668 extern tree
c_wrap_maybe_const (tree
, bool);
669 extern tree
c_save_expr (tree
);
670 extern tree
c_common_truthvalue_conversion (location_t
, tree
);
671 extern void c_apply_type_quals_to_decl (int, tree
);
672 extern tree
c_sizeof_or_alignof_type (location_t
, tree
, bool, int);
673 extern tree
c_alignof_expr (location_t
, tree
);
674 /* Print an error message for invalid operands to arith operation CODE.
675 NOP_EXPR is used as a special case (see truthvalue_conversion). */
676 extern void binary_op_error (location_t
, enum tree_code
, tree
, tree
);
677 extern tree
fix_string_type (tree
);
678 extern void constant_expression_warning (tree
);
679 extern void constant_expression_error (tree
);
680 extern bool strict_aliasing_warning (tree
, tree
, tree
);
681 extern void warnings_for_convert_and_check (tree
, tree
, tree
);
682 extern tree
convert_and_check (tree
, tree
);
683 extern void overflow_warning (location_t
, tree
);
684 extern void warn_logical_operator (location_t
, enum tree_code
, tree
,
685 enum tree_code
, tree
, enum tree_code
, tree
);
686 extern void check_main_parameter_types (tree decl
);
687 extern bool c_determine_visibility (tree
);
688 extern bool same_scalar_type_ignoring_signedness (tree
, tree
);
689 extern void mark_valid_location_for_stdc_pragma (bool);
690 extern bool valid_location_for_stdc_pragma_p (void);
691 extern void set_float_const_decimal64 (void);
692 extern void clear_float_const_decimal64 (void);
693 extern bool float_const_decimal64_p (void);
695 #define c_sizeof(LOC, T) c_sizeof_or_alignof_type (LOC, T, true, 1)
696 #define c_alignof(LOC, T) c_sizeof_or_alignof_type (LOC, T, false, 1)
698 /* Subroutine of build_binary_op, used for certain operations. */
699 extern tree
shorten_binary_op (tree result_type
, tree op0
, tree op1
, bool bitwise
);
701 /* Subroutine of build_binary_op, used for comparison operations.
702 See if the operands have both been converted from subword integer types
703 and, if so, perhaps change them both back to their original type. */
704 extern tree
shorten_compare (tree
*, tree
*, tree
*, enum tree_code
*);
706 extern tree
pointer_int_sum (location_t
, enum tree_code
, tree
, tree
);
708 /* Add qualifiers to a type, in the fashion for C. */
709 extern tree
c_build_qualified_type (tree
, int);
711 /* Build tree nodes and builtin functions common to both C and C++ language
713 extern void c_common_nodes_and_builtins (void);
715 extern void disable_builtin_function (const char *);
717 extern void set_compound_literal_name (tree decl
);
719 extern tree
build_va_arg (location_t
, tree
, tree
);
721 extern unsigned int c_common_init_options (unsigned int, const char **);
722 extern bool c_common_post_options (const char **);
723 extern bool c_common_init (void);
724 extern void c_common_finish (void);
725 extern void c_common_parse_file (int);
726 extern alias_set_type
c_common_get_alias_set (tree
);
727 extern void c_register_builtin_type (tree
, const char*);
728 extern bool c_promoting_integer_type_p (const_tree
);
729 extern int self_promoting_args_p (const_tree
);
730 extern tree
strip_pointer_operator (tree
);
731 extern tree
strip_pointer_or_array_types (tree
);
732 extern HOST_WIDE_INT
c_common_to_target_charset (HOST_WIDE_INT
);
734 /* This is the basic parsing function. */
735 extern void c_parse_file (void);
736 /* This is misnamed, it actually performs end-of-compilation processing. */
737 extern void finish_file (void);
739 extern void warn_for_omitted_condop (location_t
, tree
);
741 /* These macros provide convenient access to the various _STMT nodes. */
743 /* Nonzero if a given STATEMENT_LIST represents the outermost binding
744 if a statement expression. */
745 #define STATEMENT_LIST_STMT_EXPR(NODE) \
746 TREE_LANG_FLAG_1 (STATEMENT_LIST_CHECK (NODE))
748 /* Nonzero if a label has been added to the statement list. */
749 #define STATEMENT_LIST_HAS_LABEL(NODE) \
750 TREE_LANG_FLAG_3 (STATEMENT_LIST_CHECK (NODE))
752 /* C_MAYBE_CONST_EXPR accessors. */
753 #define C_MAYBE_CONST_EXPR_PRE(NODE) \
754 TREE_OPERAND (C_MAYBE_CONST_EXPR_CHECK (NODE), 0)
755 #define C_MAYBE_CONST_EXPR_EXPR(NODE) \
756 TREE_OPERAND (C_MAYBE_CONST_EXPR_CHECK (NODE), 1)
757 #define C_MAYBE_CONST_EXPR_INT_OPERANDS(NODE) \
758 TREE_LANG_FLAG_0 (C_MAYBE_CONST_EXPR_CHECK (NODE))
759 #define C_MAYBE_CONST_EXPR_NON_CONST(NODE) \
760 TREE_LANG_FLAG_1 (C_MAYBE_CONST_EXPR_CHECK (NODE))
761 #define EXPR_INT_CONST_OPERANDS(EXPR) \
762 (INTEGRAL_TYPE_P (TREE_TYPE (EXPR)) \
763 && (TREE_CODE (EXPR) == INTEGER_CST \
764 || (TREE_CODE (EXPR) == C_MAYBE_CONST_EXPR \
765 && C_MAYBE_CONST_EXPR_INT_OPERANDS (EXPR))))
767 /* In a FIELD_DECL, nonzero if the decl was originally a bitfield. */
768 #define DECL_C_BIT_FIELD(NODE) \
769 (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) == 1)
770 #define SET_DECL_C_BIT_FIELD(NODE) \
771 (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 1)
772 #define CLEAR_DECL_C_BIT_FIELD(NODE) \
773 (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 0)
775 extern tree
do_case (location_t
, tree
, tree
);
776 extern tree
build_stmt (location_t
, enum tree_code
, ...);
777 extern tree
build_case_label (location_t
, tree
, tree
, tree
);
779 /* These functions must be defined by each front-end which implements
780 a variant of the C language. They are used in c-common.c. */
782 extern tree
build_unary_op (location_t
, enum tree_code
, tree
, int);
783 extern tree
build_binary_op (location_t
, enum tree_code
, tree
, tree
, int);
784 extern tree
perform_integral_promotions (tree
);
786 /* These functions must be defined by each front-end which implements
787 a variant of the C language. They are used by port files. */
789 extern tree
default_conversion (tree
);
791 /* Given two integer or real types, return the type for their sum.
792 Given two compatible ANSI C types, returns the merged type. */
794 extern tree
common_type (tree
, tree
);
796 extern tree
decl_constant_value (tree
);
798 /* Handle increment and decrement of boolean types. */
799 extern tree
boolean_increment (enum tree_code
, tree
);
801 extern int case_compare (splay_tree_key
, splay_tree_key
);
803 extern tree
c_add_case_label (location_t
, splay_tree
, tree
, tree
, tree
, tree
);
805 extern void c_do_switch_warnings (splay_tree
, location_t
, tree
, tree
);
807 extern tree
build_function_call (location_t
, tree
, tree
);
809 extern tree
build_function_call_vec (location_t
, tree
,
810 VEC(tree
,gc
) *, VEC(tree
,gc
) *);
812 extern tree
resolve_overloaded_builtin (location_t
, tree
, VEC(tree
,gc
) *);
814 extern tree
finish_label_address_expr (tree
, location_t
);
816 /* Same function prototype, but the C and C++ front ends have
817 different implementations. Used in c-common.c. */
818 extern tree
lookup_label (tree
);
819 extern tree
lookup_name (tree
);
820 extern bool lvalue_p (const_tree
);
822 extern bool vector_targets_convertible_p (const_tree t1
, const_tree t2
);
823 extern bool vector_types_convertible_p (const_tree t1
, const_tree t2
, bool emit_lax_note
);
825 extern rtx
c_expand_expr (tree
, rtx
, enum machine_mode
, int, rtx
*);
827 extern void init_c_lex (void);
829 extern void c_cpp_builtins (cpp_reader
*);
830 extern void c_cpp_builtins_optimize_pragma (cpp_reader
*, tree
, tree
);
831 extern bool c_cpp_error (cpp_reader
*, int, int, location_t
, unsigned int,
832 const char *, va_list *)
833 ATTRIBUTE_GCC_DIAG(6,0);
835 /* Positive if an implicit `extern "C"' scope has just been entered;
836 negative if such a scope has just been exited. */
837 extern GTY(()) int pending_lang_change
;
839 /* Information recorded about each file examined during compilation. */
843 int time
; /* Time spent in the file. */
845 /* Flags used only by C++.
846 INTERFACE_ONLY nonzero means that we are in an "interface" section
847 of the compiler. INTERFACE_UNKNOWN nonzero means we cannot trust
848 the value of INTERFACE_ONLY. If INTERFACE_UNKNOWN is zero and
849 INTERFACE_ONLY is zero, it means that we are responsible for
850 exporting definitions that others might need. */
851 short interface_only
;
852 short interface_unknown
;
855 struct c_fileinfo
*get_fileinfo (const char *);
856 extern void dump_time_statistics (void);
858 extern bool c_dump_tree (void *, tree
);
860 extern void verify_sequence_points (tree
);
862 extern tree
fold_offsetof (tree
, tree
);
864 /* Places where an lvalue, or modifiable lvalue, may be required.
865 Used to select diagnostic messages in lvalue_error and
875 extern void lvalue_error (enum lvalue_use
);
877 extern int complete_array_type (tree
*, tree
, bool);
879 extern tree
builtin_type_for_size (int, bool);
881 extern void warn_array_subscript_with_type_char (tree
);
882 extern void warn_about_parentheses (enum tree_code
,
883 enum tree_code
, tree
,
884 enum tree_code
, tree
);
885 extern void warn_for_unused_label (tree label
);
886 extern void warn_for_div_by_zero (location_t
, tree divisor
);
887 extern void warn_for_sign_compare (location_t
,
888 tree orig_op0
, tree orig_op1
,
891 enum tree_code resultcode
);
892 extern void set_underlying_type (tree x
);
893 extern VEC(tree
,gc
) *make_tree_vector (void);
894 extern void release_tree_vector (VEC(tree
,gc
) *);
895 extern VEC(tree
,gc
) *make_tree_vector_single (tree
);
896 extern VEC(tree
,gc
) *make_tree_vector_copy (const VEC(tree
,gc
) *);
898 /* In c-gimplify.c */
899 extern void c_genericize (tree
);
900 extern int c_gimplify_expr (tree
*, gimple_seq
*, gimple_seq
*);
901 extern tree
c_build_bind_expr (location_t
, tree
, tree
);
904 extern void pch_init (void);
905 extern int c_common_valid_pch (cpp_reader
*pfile
, const char *name
, int fd
);
906 extern void c_common_read_pch (cpp_reader
*pfile
, const char *name
, int fd
,
908 extern void c_common_write_pch (void);
909 extern void c_common_no_more_pch (void);
910 extern void c_common_pch_pragma (cpp_reader
*pfile
, const char *);
911 extern void c_common_print_pch_checksum (FILE *f
);
913 /* In *-checksum.c */
914 extern const unsigned char executable_checksum
[16];
916 /* In c-cppbuiltin.c */
917 extern void builtin_define_std (const char *macro
);
918 extern void builtin_define_with_value (const char *, const char *, int);
919 extern void c_stddef_cpp_builtins (void);
920 extern void fe_file_change (const struct line_map
*);
921 extern void c_parse_error (const char *, enum cpp_ttype
, tree
, unsigned char);
923 /* Objective-C / Objective-C++ entry points. */
925 /* The following ObjC/ObjC++ functions are called by the C and/or C++
926 front-ends; they all must have corresponding stubs in stub-objc.c. */
927 extern tree
objc_is_class_name (tree
);
928 extern tree
objc_is_object_ptr (tree
);
929 extern void objc_check_decl (tree
);
930 extern int objc_is_reserved_word (tree
);
931 extern bool objc_compare_types (tree
, tree
, int, tree
);
932 extern void objc_volatilize_decl (tree
);
933 extern bool objc_type_quals_match (tree
, tree
);
934 extern tree
objc_rewrite_function_call (tree
, tree
);
935 extern tree
objc_message_selector (void);
936 extern tree
objc_lookup_ivar (tree
, tree
);
937 extern void objc_clear_super_receiver (void);
938 extern int objc_is_public (tree
, tree
);
939 extern tree
objc_is_id (tree
);
940 extern void objc_declare_alias (tree
, tree
);
941 extern void objc_declare_class (tree
);
942 extern void objc_declare_protocols (tree
);
943 extern tree
objc_build_message_expr (tree
);
944 extern tree
objc_finish_message_expr (tree
, tree
, tree
);
945 extern tree
objc_build_selector_expr (location_t
, tree
);
946 extern tree
objc_build_protocol_expr (tree
);
947 extern tree
objc_build_encode_expr (tree
);
948 extern tree
objc_build_string_object (tree
);
949 extern tree
objc_get_protocol_qualified_type (tree
, tree
);
950 extern tree
objc_get_class_reference (tree
);
951 extern tree
objc_get_class_ivars (tree
);
952 extern void objc_start_class_interface (tree
, tree
, tree
);
953 extern void objc_start_category_interface (tree
, tree
, tree
);
954 extern void objc_start_protocol (tree
, tree
);
955 extern void objc_continue_interface (void);
956 extern void objc_finish_interface (void);
957 extern void objc_start_class_implementation (tree
, tree
);
958 extern void objc_start_category_implementation (tree
, tree
);
959 extern void objc_continue_implementation (void);
960 extern void objc_finish_implementation (void);
961 extern void objc_set_visibility (int);
962 extern void objc_set_method_type (enum tree_code
);
963 extern tree
objc_build_method_signature (tree
, tree
, tree
, bool);
964 extern void objc_add_method_declaration (tree
);
965 extern void objc_start_method_definition (tree
);
966 extern void objc_finish_method_definition (tree
);
967 extern void objc_add_instance_variable (tree
);
968 extern tree
objc_build_keyword_decl (tree
, tree
, tree
);
969 extern tree
objc_build_throw_stmt (location_t
, tree
);
970 extern void objc_begin_try_stmt (location_t
, tree
);
971 extern tree
objc_finish_try_stmt (void);
972 extern void objc_begin_catch_clause (tree
);
973 extern void objc_finish_catch_clause (void);
974 extern void objc_build_finally_clause (location_t
, tree
);
975 extern tree
objc_build_synchronized (location_t
, tree
, tree
);
976 extern int objc_static_init_needed_p (void);
977 extern tree
objc_generate_static_init_call (tree
);
978 extern tree
objc_generate_write_barrier (tree
, enum tree_code
, tree
);
980 /* The following are provided by the C and C++ front-ends, and called by
982 extern void *objc_get_current_scope (void);
983 extern void objc_mark_locals_volatile (void *);
985 /* In c-ppoutput.c */
986 extern void init_pp_output (FILE *);
987 extern void preprocess_file (cpp_reader
*);
988 extern void pp_file_change (const struct line_map
*);
989 extern void pp_dir_change (cpp_reader
*, const char *);
990 extern bool check_missing_format_attribute (tree
, tree
);
993 extern tree
c_finish_omp_master (location_t
, tree
);
994 extern tree
c_finish_omp_critical (location_t
, tree
, tree
);
995 extern tree
c_finish_omp_ordered (location_t
, tree
);
996 extern void c_finish_omp_barrier (location_t
);
997 extern tree
c_finish_omp_atomic (location_t
, enum tree_code
, tree
, tree
);
998 extern void c_finish_omp_flush (location_t
);
999 extern void c_finish_omp_taskwait (location_t
);
1000 extern tree
c_finish_omp_for (location_t
, tree
, tree
, tree
, tree
, tree
, tree
);
1001 extern void c_split_parallel_clauses (location_t
, tree
, tree
*, tree
*);
1002 extern enum omp_clause_default_kind
c_omp_predetermined_sharing (tree
);
1004 /* Not in c-omp.c; provided by the front end. */
1005 extern bool c_omp_sharing_predetermined (tree
);
1006 extern tree
c_omp_remap_decl (tree
, bool);
1007 extern void record_types_used_by_current_var_decl (tree
);
1009 #endif /* ! GCC_C_COMMON_H */