1 /* Definitions for c-common.c.
2 Copyright (C) 1987, 1993, 1994, 1995, 1997, 1998,
3 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007 Free Software Foundation, Inc.
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify it under
8 the terms of the GNU General Public License as published by the Free
9 Software Foundation; either version 3, or (at your option) any later
12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING3. If not see
19 <http://www.gnu.org/licenses/>. */
21 #ifndef GCC_C_COMMON_H
22 #define GCC_C_COMMON_H
24 #include "splay-tree.h"
28 /* Usage of TREE_LANG_FLAG_?:
29 0: TREE_NEGATED_INT (in INTEGER_CST).
30 IDENTIFIER_MARKED (used by search routines).
31 DECL_PRETTY_FUNCTION_P (in VAR_DECL)
32 1: C_DECLARED_LABEL_FLAG (in LABEL_DECL)
33 STATEMENT_LIST_STMT_EXPR (in STATEMENT_LIST)
35 3: STATEMENT_LIST_HAS_LABEL (in STATEMENT_LIST)
39 /* Reserved identifiers. This is the union of all the keywords for C,
40 C++, and Objective-C. All the type modifiers have to be in one
41 block at the beginning, because they are used as mask bits. There
42 are 27 type modifiers; if we add many more we will have to redesign
43 the mask mechanism. */
48 /* C, in empirical order of frequency. */
50 RID_UNSIGNED
, RID_LONG
, RID_CONST
, RID_EXTERN
,
51 RID_REGISTER
, RID_TYPEDEF
, RID_SHORT
, RID_INLINE
,
52 RID_VOLATILE
, RID_SIGNED
, RID_AUTO
, RID_RESTRICT
,
55 RID_COMPLEX
, RID_THREAD
, RID_SAT
,
58 RID_FRIEND
, RID_VIRTUAL
, RID_EXPLICIT
, RID_EXPORT
, RID_MUTABLE
,
61 RID_IN
, RID_OUT
, RID_INOUT
, RID_BYCOPY
, RID_BYREF
, RID_ONEWAY
,
64 RID_INT
, RID_CHAR
, RID_FLOAT
, RID_DOUBLE
, RID_VOID
,
65 RID_ENUM
, RID_STRUCT
, RID_UNION
, RID_IF
, RID_ELSE
,
66 RID_WHILE
, RID_DO
, RID_FOR
, RID_SWITCH
, RID_CASE
,
67 RID_DEFAULT
, RID_BREAK
, RID_CONTINUE
, RID_RETURN
, RID_GOTO
,
71 RID_ASM
, RID_TYPEOF
, RID_ALIGNOF
, RID_ATTRIBUTE
, RID_VA_ARG
,
72 RID_EXTENSION
, RID_IMAGPART
, RID_REALPART
, RID_LABEL
, RID_CHOOSE_EXPR
,
73 RID_TYPES_COMPATIBLE_P
,
74 RID_DFLOAT32
, RID_DFLOAT64
, RID_DFLOAT128
,
77 /* This means to warn that this is a C++ keyword, and then treat it
78 as a normal identifier. */
81 /* Too many ways of getting the name of a function as a string */
82 RID_FUNCTION_NAME
, RID_PRETTY_FUNCTION_NAME
, RID_C99_FUNCTION_NAME
,
85 RID_BOOL
, RID_WCHAR
, RID_CLASS
,
86 RID_PUBLIC
, RID_PRIVATE
, RID_PROTECTED
,
87 RID_TEMPLATE
, RID_NULL
, RID_CATCH
,
88 RID_DELETE
, RID_FALSE
, RID_NAMESPACE
,
89 RID_NEW
, RID_OFFSETOF
, RID_OPERATOR
,
90 RID_THIS
, RID_THROW
, RID_TRUE
,
91 RID_TRY
, RID_TYPENAME
, RID_TYPEID
,
92 RID_USING
, RID_CHAR16
, RID_CHAR32
,
95 RID_CONSTCAST
, RID_DYNCAST
, RID_REINTCAST
, RID_STATCAST
,
98 RID_HAS_NOTHROW_ASSIGN
, RID_HAS_NOTHROW_CONSTRUCTOR
,
99 RID_HAS_NOTHROW_COPY
, RID_HAS_TRIVIAL_ASSIGN
,
100 RID_HAS_TRIVIAL_CONSTRUCTOR
, RID_HAS_TRIVIAL_COPY
,
101 RID_HAS_TRIVIAL_DESTRUCTOR
, RID_HAS_VIRTUAL_DESTRUCTOR
,
102 RID_IS_ABSTRACT
, RID_IS_BASE_OF
,
103 RID_IS_CONVERTIBLE_TO
, RID_IS_CLASS
,
104 RID_IS_EMPTY
, RID_IS_ENUM
,
105 RID_IS_POD
, RID_IS_POLYMORPHIC
,
109 RID_STATIC_ASSERT
, RID_DECLTYPE
,
112 RID_AT_ENCODE
, RID_AT_END
,
113 RID_AT_CLASS
, RID_AT_ALIAS
, RID_AT_DEFS
,
114 RID_AT_PRIVATE
, RID_AT_PROTECTED
, RID_AT_PUBLIC
,
115 RID_AT_PROTOCOL
, RID_AT_SELECTOR
,
116 RID_AT_THROW
, RID_AT_TRY
, RID_AT_CATCH
,
117 RID_AT_FINALLY
, RID_AT_SYNCHRONIZED
,
119 RID_AT_IMPLEMENTATION
,
123 RID_FIRST_MODIFIER
= RID_STATIC
,
124 RID_LAST_MODIFIER
= RID_ONEWAY
,
126 RID_FIRST_CXX0X
= RID_STATIC_ASSERT
,
127 RID_LAST_CXX0X
= RID_DECLTYPE
,
128 RID_FIRST_AT
= RID_AT_ENCODE
,
129 RID_LAST_AT
= RID_AT_IMPLEMENTATION
,
130 RID_FIRST_PQ
= RID_IN
,
131 RID_LAST_PQ
= RID_ONEWAY
134 #define OBJC_IS_AT_KEYWORD(rid) \
135 ((unsigned int) (rid) >= (unsigned int) RID_FIRST_AT && \
136 (unsigned int) (rid) <= (unsigned int) RID_LAST_AT)
138 #define OBJC_IS_PQ_KEYWORD(rid) \
139 ((unsigned int) (rid) >= (unsigned int) RID_FIRST_PQ && \
140 (unsigned int) (rid) <= (unsigned int) RID_LAST_PQ)
142 /* The elements of `ridpointers' are identifier nodes for the reserved
143 type names and storage classes. It is indexed by a RID_... value. */
144 extern GTY ((length ("(int) RID_MAX"))) tree
*ridpointers
;
146 /* Standard named or nameless data types of the C compiler. */
153 CTI_SIGNED_WCHAR_TYPE
,
154 CTI_UNSIGNED_WCHAR_TYPE
,
156 CTI_SIGNED_SIZE_TYPE
, /* For format checking only. */
157 CTI_UNSIGNED_PTRDIFF_TYPE
, /* For format checking only. */
160 CTI_WIDEST_INT_LIT_TYPE
,
161 CTI_WIDEST_UINT_LIT_TYPE
,
164 CTI_CHAR16_ARRAY_TYPE
,
165 CTI_CHAR32_ARRAY_TYPE
,
166 CTI_WCHAR_ARRAY_TYPE
,
169 CTI_CONST_STRING_TYPE
,
171 /* Type for boolean expressions (bool in C++, int in C). */
174 CTI_TRUTHVALUE_FALSE
,
176 CTI_DEFAULT_FUNCTION_TYPE
,
178 /* These are not types, but we have to look them up all the time. */
179 CTI_FUNCTION_NAME_DECL
,
180 CTI_PRETTY_FUNCTION_NAME_DECL
,
181 CTI_C99_FUNCTION_NAME_DECL
,
182 CTI_SAVED_FUNCTION_NAME_DECLS
,
191 #define C_CPP_HASHNODE(id) \
192 (&(((struct c_common_identifier *) (id))->node))
193 #define C_RID_CODE(id) \
194 ((enum rid) (((struct c_common_identifier *) (id))->node.rid_code))
195 #define C_SET_RID_CODE(id, code) \
196 (((struct c_common_identifier *) (id))->node.rid_code = (unsigned char) code)
198 /* Identifier part common to the C front ends. Inherits from
199 tree_identifier, despite appearances. */
200 struct c_common_identifier
GTY(())
202 struct tree_common common
;
203 struct cpp_hashnode node
;
206 /* An entry in the reserved keyword table. */
208 struct c_common_resword
210 const char *const word
;
211 ENUM_BITFIELD(rid
) const rid
: 16;
212 const unsigned int disable
: 16;
215 /* Disable mask. Keywords are disabled if (reswords[i].disable &
216 mask) is _true_. Thus for keywords which are present in all
217 languages the disable field is zero. */
219 #define D_CONLY 0x001 /* C only (not in C++). */
220 #define D_CXXONLY 0x002 /* C++ only (not in C). */
221 #define D_C99 0x004 /* In C, C99 only. */
222 #define D_CXX0X 0x008 /* In C++, C++0X only. */
223 #define D_EXT 0x010 /* GCC extension. */
224 #define D_EXT89 0x020 /* GCC extension incorporated in C99. */
225 #define D_ASM 0x040 /* Disabled by -fno-asm. */
226 #define D_OBJC 0x080 /* In Objective C and neither C nor C++. */
227 #define D_CXX_OBJC 0x100 /* In Objective C, and C++, but not C. */
228 #define D_CXXWARN 0x200 /* In C warn with -Wcxx-compat. */
230 /* The reserved keyword table. */
231 extern const struct c_common_resword c_common_reswords
[];
233 /* The number of items in the reserved keyword table. */
234 extern const unsigned int num_c_common_reswords
;
236 #define char16_type_node c_global_trees[CTI_CHAR16_TYPE]
237 #define char32_type_node c_global_trees[CTI_CHAR32_TYPE]
238 #define wchar_type_node c_global_trees[CTI_WCHAR_TYPE]
239 #define signed_wchar_type_node c_global_trees[CTI_SIGNED_WCHAR_TYPE]
240 #define unsigned_wchar_type_node c_global_trees[CTI_UNSIGNED_WCHAR_TYPE]
241 #define wint_type_node c_global_trees[CTI_WINT_TYPE]
242 #define signed_size_type_node c_global_trees[CTI_SIGNED_SIZE_TYPE]
243 #define unsigned_ptrdiff_type_node c_global_trees[CTI_UNSIGNED_PTRDIFF_TYPE]
244 #define intmax_type_node c_global_trees[CTI_INTMAX_TYPE]
245 #define uintmax_type_node c_global_trees[CTI_UINTMAX_TYPE]
246 #define widest_integer_literal_type_node c_global_trees[CTI_WIDEST_INT_LIT_TYPE]
247 #define widest_unsigned_literal_type_node c_global_trees[CTI_WIDEST_UINT_LIT_TYPE]
249 #define truthvalue_type_node c_global_trees[CTI_TRUTHVALUE_TYPE]
250 #define truthvalue_true_node c_global_trees[CTI_TRUTHVALUE_TRUE]
251 #define truthvalue_false_node c_global_trees[CTI_TRUTHVALUE_FALSE]
253 #define char_array_type_node c_global_trees[CTI_CHAR_ARRAY_TYPE]
254 #define char16_array_type_node c_global_trees[CTI_CHAR16_ARRAY_TYPE]
255 #define char32_array_type_node c_global_trees[CTI_CHAR32_ARRAY_TYPE]
256 #define wchar_array_type_node c_global_trees[CTI_WCHAR_ARRAY_TYPE]
257 #define int_array_type_node c_global_trees[CTI_INT_ARRAY_TYPE]
258 #define string_type_node c_global_trees[CTI_STRING_TYPE]
259 #define const_string_type_node c_global_trees[CTI_CONST_STRING_TYPE]
261 #define default_function_type c_global_trees[CTI_DEFAULT_FUNCTION_TYPE]
263 #define function_name_decl_node c_global_trees[CTI_FUNCTION_NAME_DECL]
264 #define pretty_function_name_decl_node c_global_trees[CTI_PRETTY_FUNCTION_NAME_DECL]
265 #define c99_function_name_decl_node c_global_trees[CTI_C99_FUNCTION_NAME_DECL]
266 #define saved_function_name_decls c_global_trees[CTI_SAVED_FUNCTION_NAME_DECLS]
268 /* A node for `((void) 0)'. */
269 #define void_zero_node c_global_trees[CTI_VOID_ZERO]
271 /* The node for C++ `__null'. */
272 #define null_node c_global_trees[CTI_NULL]
274 extern GTY(()) tree c_global_trees
[CTI_MAX
];
276 /* In a RECORD_TYPE, a sorted array of the fields of the type, not a
277 tree for size reasons. */
278 struct sorted_fields_type
GTY(())
281 tree
GTY((length ("%h.len"))) elts
[1];
284 /* Mark which labels are explicitly declared.
285 These may be shadowed, and may be referenced from nested functions. */
286 #define C_DECLARED_LABEL_FLAG(label) TREE_LANG_FLAG_1 (label)
288 typedef enum c_language_kind
290 clk_c
= 0, /* C90, C94 or C99 */
291 clk_objc
= 1, /* clk_c with ObjC features. */
292 clk_cxx
= 2, /* ANSI/ISO C++ */
293 clk_objcxx
= 3 /* clk_cxx with ObjC features. */
297 /* To test for a specific language use c_language, defined by each
298 front end. For "ObjC features" or "not C++" use the macros. */
299 extern c_language_kind c_language
;
301 #define c_dialect_cxx() (c_language & clk_cxx)
302 #define c_dialect_objc() (c_language & clk_objc)
304 /* Information about a statement tree. */
306 struct stmt_tree_s
GTY(()) {
307 /* The current statement list being collected. */
308 tree x_cur_stmt_list
;
310 /* In C++, Nonzero if we should treat statements as full
311 expressions. In particular, this variable is no-zero if at the
312 end of a statement we should destroy any temporaries created
313 during that statement. Similarly, if, at the end of a block, we
314 should destroy any local variables in this block. Normally, this
315 variable is nonzero, since those are the normal semantics of
318 However, in order to represent aggregate initialization code as
319 tree structure, we use statement-expressions. The statements
320 within the statement expression should not result in cleanups
321 being run until the entire enclosing statement is complete.
323 This flag has no effect in C. */
324 int stmts_are_full_exprs_p
;
327 typedef struct stmt_tree_s
*stmt_tree
;
329 /* Global state pertinent to the current function. Some C dialects
330 extend this structure with additional fields. */
332 struct c_language_function
GTY(()) {
333 /* While we are parsing the function, this contains information
334 about the statement-tree that we are building. */
335 struct stmt_tree_s x_stmt_tree
;
338 /* When building a statement-tree, this is the current statement list
339 being collected. It's TREE_CHAIN is a back-pointer to the previous
342 #define cur_stmt_list (current_stmt_tree ()->x_cur_stmt_list)
344 /* Language-specific hooks. */
346 /* If non-NULL, this function is called after a precompile header file
348 extern void (*lang_post_pch_load
) (void);
350 extern void push_file_scope (void);
351 extern void pop_file_scope (void);
352 extern stmt_tree
current_stmt_tree (void);
353 extern tree
push_stmt_list (void);
354 extern tree
pop_stmt_list (tree
);
355 extern tree
add_stmt (tree
);
356 extern void push_cleanup (tree
, tree
, bool);
357 extern tree
pushdecl_top_level (tree
);
358 extern tree
pushdecl (tree
);
359 extern tree
build_modify_expr (tree
, enum tree_code
, tree
);
360 extern tree
build_indirect_ref (tree
, const char *, location_t
);
362 extern int c_expand_decl (tree
);
364 extern int field_decl_cmp (const void *, const void *);
365 extern void resort_sorted_fields (void *, void *, gt_pointer_operator
,
367 extern bool has_c_linkage (const_tree decl
);
369 /* Switches common to the C front ends. */
371 /* Nonzero if prepreprocessing only. */
373 extern int flag_preprocess_only
;
375 /* Zero means that faster, ...NonNil variants of objc_msgSend...
376 calls will be used in ObjC; passing nil receivers to such calls
377 will most likely result in crashes. */
378 extern int flag_nil_receivers
;
380 /* Nonzero means that we will allow new ObjC exception syntax (@throw,
381 @try, etc.) in source code. */
382 extern int flag_objc_exceptions
;
384 /* Nonzero means that we generate NeXT setjmp based exceptions. */
385 extern int flag_objc_sjlj_exceptions
;
387 /* Nonzero means that code generation will be altered to support
388 "zero-link" execution. This currently affects ObjC only, but may
389 affect other languages in the future. */
390 extern int flag_zero_link
;
392 /* Nonzero means emit an '__OBJC, __image_info' for the current translation
393 unit. It will inform the ObjC runtime that class definition(s) herein
394 contained are to replace one(s) previously loaded. */
395 extern int flag_replace_objc_classes
;
397 /* Nonzero means don't output line number information. */
399 extern char flag_no_line_commands
;
401 /* Nonzero causes -E output not to be done, but directives such as
402 #define that have side effects are still obeyed. */
404 extern char flag_no_output
;
406 /* Nonzero means dump macros in some fashion; contains the 'D', 'M',
407 'N' or 'U' of the command line switch. */
409 extern char flag_dump_macros
;
411 /* Nonzero means pass #include lines through to the output. */
413 extern char flag_dump_includes
;
415 /* Nonzero means process PCH files while preprocessing. */
417 extern bool flag_pch_preprocess
;
419 /* The file name to which we should write a precompiled header, or
420 NULL if no header will be written in this compile. */
422 extern const char *pch_file
;
424 /* Nonzero if an ISO standard was selected. It rejects macros in the
429 /* Nonzero if -undef was given. It suppresses target built-in macros
432 extern int flag_undef
;
434 /* Nonzero means don't recognize the non-ANSI builtin functions. */
436 extern int flag_no_builtin
;
438 /* Nonzero means don't recognize the non-ANSI builtin functions.
441 extern int flag_no_nonansi_builtin
;
443 /* Nonzero means give `double' the same size as `float'. */
445 extern int flag_short_double
;
447 /* Nonzero means give `wchar_t' the same size as `short'. */
449 extern int flag_short_wchar
;
451 /* Nonzero means allow implicit conversions between vectors with
452 differing numbers of subparts and/or differing element types. */
453 extern int flag_lax_vector_conversions
;
455 /* Nonzero means allow Microsoft extensions without warnings or errors. */
456 extern int flag_ms_extensions
;
458 /* Nonzero means don't recognize the keyword `asm'. */
460 extern int flag_no_asm
;
462 /* Nonzero means give string constants the type `const char *', as mandated
465 extern int flag_const_strings
;
467 /* Nonzero means to treat bitfields as signed unless they say `unsigned'. */
469 extern int flag_signed_bitfields
;
471 /* Warn about #pragma directives that are not recognized. */
473 extern int warn_unknown_pragmas
; /* Tri state variable. */
475 /* Warn about format/argument anomalies in calls to formatted I/O functions
476 (*printf, *scanf, strftime, strfmon, etc.). */
478 extern int warn_format
;
481 /* C/ObjC language option variables. */
484 /* Nonzero means allow type mismatches in conditional expressions;
485 just make their values `void'. */
487 extern int flag_cond_mismatch
;
489 /* Nonzero means enable C89 Amendment 1 features. */
491 extern int flag_isoc94
;
493 /* Nonzero means use the ISO C99 dialect of C. */
495 extern int flag_isoc99
;
497 /* Nonzero means that we have builtin functions, and main is an int. */
499 extern int flag_hosted
;
501 /* ObjC language option variables. */
504 /* Open and close the file for outputting class declarations, if
507 extern int flag_gen_declaration
;
509 /* Tells the compiler that this is a special run. Do not perform any
510 compiling, instead we are to test some platform dependent features
511 and output a C header file with appropriate definitions. */
513 extern int print_struct_values
;
515 /* ???. Undocumented. */
517 extern const char *constant_string_class_name
;
520 /* C++ language option variables. */
523 /* Nonzero means don't recognize any extension keywords. */
525 extern int flag_no_gnu_keywords
;
527 /* Nonzero means do emit exported implementations of functions even if
528 they can be inlined. */
530 extern int flag_implement_inlines
;
532 /* Nonzero means that implicit instantiations will be emitted if needed. */
534 extern int flag_implicit_templates
;
536 /* Nonzero means that implicit instantiations of inline templates will be
537 emitted if needed, even if instantiations of non-inline templates
540 extern int flag_implicit_inline_templates
;
542 /* Nonzero means generate separate instantiation control files and
543 juggle them at link time. */
545 extern int flag_use_repository
;
547 /* Nonzero if we want to issue diagnostics that the standard says are not
550 extern int flag_optional_diags
;
552 /* Nonzero means we should attempt to elide constructors when possible. */
554 extern int flag_elide_constructors
;
556 /* Nonzero means that member functions defined in class scope are
557 inline by default. */
559 extern int flag_default_inline
;
561 /* Controls whether compiler generates 'type descriptor' that give
562 run-time type information. */
564 extern int flag_rtti
;
566 /* Nonzero if we want to conserve space in the .o files. We do this
567 by putting uninitialized data and runtime initialized data into
568 .common instead of .data at the expense of not flagging multiple
571 extern int flag_conserve_space
;
573 /* Nonzero if we want to obey access control semantics. */
575 extern int flag_access_control
;
577 /* Nonzero if we want to check the return value of new and avoid calling
578 constructors if it is a null pointer. */
580 extern int flag_check_new
;
582 /* The supported C++ dialects. */
587 /* Experimental features that are likely to become part of
592 /* The C++ dialect being used. C++98 is the default. */
593 extern enum cxx_dialect cxx_dialect
;
595 /* Nonzero if we want the new ISO rules for pushing a new scope for `for'
596 initialization variables.
597 0: Old rules, set by -fno-for-scope.
598 2: New ISO rules, set by -ffor-scope.
599 1: Try to implement new ISO rules, but with backup compatibility
600 (and warnings). This is the default, for now. */
602 extern int flag_new_for_scope
;
604 /* Nonzero if we want to emit defined symbols with common-like linkage as
605 weak symbols where possible, in order to conform to C++ semantics.
606 Otherwise, emit them as local symbols. */
608 extern int flag_weak
;
610 /* 0 means we want the preprocessor to not emit line directives for
611 the current working directory. 1 means we want it to do it. -1
612 means we should decide depending on whether debugging information
613 is being emitted or not. */
615 extern int flag_working_directory
;
617 /* Nonzero to use __cxa_atexit, rather than atexit, to register
618 destructors for local statics and global objects. */
620 extern int flag_use_cxa_atexit
;
622 /* Nonzero to use __cxa_get_exception_ptr in the C++ exception-handling
625 extern int flag_use_cxa_get_exception_ptr
;
627 /* Nonzero means to implement standard semantics for exception
628 specifications, calling unexpected if an exception is thrown that
629 doesn't match the specification. Zero means to treat them as
630 assertions and optimize accordingly, but not check them. */
632 extern int flag_enforce_eh_specs
;
634 /* Nonzero (the default) means to generate thread-safe code for
635 initializing local statics. */
637 extern int flag_threadsafe_statics
;
639 /* Nonzero means warn about implicit declarations. */
641 extern int warn_implicit
;
643 /* Warn about using __null (as NULL in C++) as sentinel. For code compiled
644 with GCC this doesn't matter as __null is guaranteed to have the right
647 extern int warn_strict_null_sentinel
;
649 /* Maximum template instantiation depth. This limit is rather
650 arbitrary, but it exists to limit the time it takes to notice
651 infinite template instantiations. */
653 extern int max_tinst_depth
;
655 /* Nonzero means the expression being parsed will never be evaluated.
656 This is a count, since unevaluated expressions can nest. */
658 extern int skip_evaluation
;
660 /* C types are partitioned into three subsets: object, function, and
662 #define C_TYPE_OBJECT_P(type) \
663 (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type))
665 #define C_TYPE_INCOMPLETE_P(type) \
666 (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type) == 0)
668 #define C_TYPE_FUNCTION_P(type) \
669 (TREE_CODE (type) == FUNCTION_TYPE)
671 /* For convenience we define a single macro to identify the class of
672 object or incomplete types. */
673 #define C_TYPE_OBJECT_OR_INCOMPLETE_P(type) \
674 (!C_TYPE_FUNCTION_P (type))
676 /* Attribute table common to the C front ends. */
677 extern const struct attribute_spec c_common_attribute_table
[];
678 extern const struct attribute_spec c_common_format_attribute_table
[];
680 /* Pointer to function to lazily generate the VAR_DECL for __FUNCTION__ etc.
681 ID is the identifier to use, NAME is the string.
682 TYPE_DEP indicates whether it depends on type of the function or not
683 (i.e. __PRETTY_FUNCTION__). */
685 extern tree (*make_fname_decl
) (tree
, int);
687 extern tree
identifier_global_value (tree
);
688 extern void record_builtin_type (enum rid
, const char *, tree
);
689 extern tree
build_void_list_node (void);
690 extern void start_fname_decls (void);
691 extern void finish_fname_decls (void);
692 extern const char *fname_as_string (int);
693 extern tree
fname_decl (location_t
, unsigned, tree
);
695 extern void check_function_arguments (tree
, int, tree
*, tree
);
696 extern void check_function_arguments_recurse (void (*)
698 unsigned HOST_WIDE_INT
),
700 unsigned HOST_WIDE_INT
);
701 extern bool check_builtin_function_arguments (tree
, int, tree
*);
702 extern void check_function_format (tree
, int, tree
*);
703 extern void set_Wformat (int);
704 extern tree
handle_format_attribute (tree
*, tree
, tree
, int, bool *);
705 extern tree
handle_format_arg_attribute (tree
*, tree
, tree
, int, bool *);
706 extern int c_common_handle_option (size_t code
, const char *arg
, int value
);
707 extern bool c_common_missing_argument (const char *opt
, size_t code
);
708 extern tree
c_common_type_for_mode (enum machine_mode
, int);
709 extern tree
c_common_type_for_size (unsigned int, int);
710 extern tree
c_common_fixed_point_type_for_size (unsigned int, unsigned int,
712 extern tree
c_common_unsigned_type (tree
);
713 extern tree
c_common_signed_type (tree
);
714 extern tree
c_common_signed_or_unsigned_type (int, tree
);
715 extern tree
c_build_bitfield_integer_type (unsigned HOST_WIDE_INT
, int);
716 extern bool decl_with_nonnull_addr_p (const_tree
);
717 extern tree
c_common_truthvalue_conversion (location_t
, tree
);
718 extern void c_apply_type_quals_to_decl (int, tree
);
719 extern tree
c_sizeof_or_alignof_type (tree
, bool, int);
720 extern tree
c_alignof_expr (tree
);
721 /* Print an error message for invalid operands to arith operation CODE.
722 NOP_EXPR is used as a special case (see truthvalue_conversion). */
723 extern void binary_op_error (location_t
, enum tree_code
, tree
, tree
);
724 extern tree
fix_string_type (tree
);
725 struct varray_head_tag
;
726 extern void constant_expression_warning (tree
);
727 extern void constant_expression_error (tree
);
728 extern bool strict_aliasing_warning (tree
, tree
, tree
);
729 extern void warnings_for_convert_and_check (tree
, tree
, tree
);
730 extern tree
convert_and_check (tree
, tree
);
731 extern void overflow_warning (tree
);
732 extern void warn_logical_operator (enum tree_code
, tree
, tree
);
733 extern void check_main_parameter_types (tree decl
);
734 extern bool c_determine_visibility (tree
);
735 extern bool same_scalar_type_ignoring_signedness (tree
, tree
);
737 #define c_sizeof(T) c_sizeof_or_alignof_type (T, true, 1)
738 #define c_alignof(T) c_sizeof_or_alignof_type (T, false, 1)
740 /* Subroutine of build_binary_op, used for certain operations. */
741 extern tree
shorten_binary_op (tree result_type
, tree op0
, tree op1
, bool bitwise
);
743 /* Subroutine of build_binary_op, used for comparison operations.
744 See if the operands have both been converted from subword integer types
745 and, if so, perhaps change them both back to their original type. */
746 extern tree
shorten_compare (tree
*, tree
*, tree
*, enum tree_code
*);
748 extern tree
pointer_int_sum (enum tree_code
, tree
, tree
);
749 extern unsigned int min_precision (tree
, int);
751 /* Add qualifiers to a type, in the fashion for C. */
752 extern tree
c_build_qualified_type (tree
, int);
754 /* Build tree nodes and builtin functions common to both C and C++ language
756 extern void c_common_nodes_and_builtins (void);
758 extern void set_builtin_user_assembler_name (tree decl
, const char *asmspec
);
760 extern void disable_builtin_function (const char *);
762 extern void set_compound_literal_name (tree decl
);
764 extern tree
build_va_arg (tree
, tree
);
766 extern unsigned int c_common_init_options (unsigned int, const char **);
767 extern bool c_common_post_options (const char **);
768 extern bool c_common_init (void);
769 extern void c_common_finish (void);
770 extern void c_common_parse_file (int);
771 extern alias_set_type
c_common_get_alias_set (tree
);
772 extern void c_register_builtin_type (tree
, const char*);
773 extern bool c_promoting_integer_type_p (const_tree
);
774 extern int self_promoting_args_p (const_tree
);
775 extern tree
strip_pointer_operator (tree
);
776 extern tree
strip_pointer_or_array_types (tree
);
777 extern HOST_WIDE_INT
c_common_to_target_charset (HOST_WIDE_INT
);
779 /* This is the basic parsing function. */
780 extern void c_parse_file (void);
781 /* This is misnamed, it actually performs end-of-compilation processing. */
782 extern void finish_file (void);
785 /* These macros provide convenient access to the various _STMT nodes. */
787 /* Nonzero if a given STATEMENT_LIST represents the outermost binding
788 if a statement expression. */
789 #define STATEMENT_LIST_STMT_EXPR(NODE) \
790 TREE_LANG_FLAG_1 (STATEMENT_LIST_CHECK (NODE))
792 /* Nonzero if a label has been added to the statement list. */
793 #define STATEMENT_LIST_HAS_LABEL(NODE) \
794 TREE_LANG_FLAG_3 (STATEMENT_LIST_CHECK (NODE))
796 /* COMPOUND_LITERAL_EXPR accessors. */
797 #define COMPOUND_LITERAL_EXPR_DECL_STMT(NODE) \
798 TREE_OPERAND (COMPOUND_LITERAL_EXPR_CHECK (NODE), 0)
799 #define COMPOUND_LITERAL_EXPR_DECL(NODE) \
800 DECL_EXPR_DECL (COMPOUND_LITERAL_EXPR_DECL_STMT (NODE))
802 /* In a FIELD_DECL, nonzero if the decl was originally a bitfield. */
803 #define DECL_C_BIT_FIELD(NODE) \
804 (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) == 1)
805 #define SET_DECL_C_BIT_FIELD(NODE) \
806 (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 1)
807 #define CLEAR_DECL_C_BIT_FIELD(NODE) \
808 (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 0)
810 extern void emit_local_var (tree
);
811 extern tree
do_case (tree
, tree
);
812 extern tree
build_stmt (enum tree_code
, ...);
813 extern tree
build_case_label (tree
, tree
, tree
);
815 /* These functions must be defined by each front-end which implements
816 a variant of the C language. They are used in c-common.c. */
818 extern tree
build_unary_op (enum tree_code
, tree
, int);
819 extern tree
build_binary_op (location_t
, enum tree_code
, tree
, tree
, int);
820 extern tree
perform_integral_promotions (tree
);
822 /* These functions must be defined by each front-end which implements
823 a variant of the C language. They are used by port files. */
825 extern tree
default_conversion (tree
);
827 /* Given two integer or real types, return the type for their sum.
828 Given two compatible ANSI C types, returns the merged type. */
830 extern tree
common_type (tree
, tree
);
832 extern tree
decl_constant_value (tree
);
834 /* Handle increment and decrement of boolean types. */
835 extern tree
boolean_increment (enum tree_code
, tree
);
837 extern int case_compare (splay_tree_key
, splay_tree_key
);
839 extern tree
c_add_case_label (splay_tree
, tree
, tree
, tree
, tree
);
841 extern void c_do_switch_warnings (splay_tree
, location_t
, tree
, tree
);
843 extern tree
build_function_call (tree
, tree
);
845 extern tree
resolve_overloaded_builtin (tree
, tree
);
847 extern tree
finish_label_address_expr (tree
, location_t
);
849 /* Same function prototype, but the C and C++ front ends have
850 different implementations. Used in c-common.c. */
851 extern tree
lookup_label (tree
);
852 extern tree
lookup_name (tree
);
854 extern bool vector_targets_convertible_p (const_tree t1
, const_tree t2
);
855 extern bool vector_types_convertible_p (const_tree t1
, const_tree t2
, bool emit_lax_note
);
857 extern rtx
c_expand_expr (tree
, rtx
, enum machine_mode
, int, rtx
*);
859 extern tree
c_staticp (tree
);
861 extern void init_c_lex (void);
863 extern void c_cpp_builtins (cpp_reader
*);
864 extern void c_cpp_builtins_optimize_pragma (cpp_reader
*, tree
, tree
);
866 /* Positive if an implicit `extern "C"' scope has just been entered;
867 negative if such a scope has just been exited. */
868 extern GTY(()) int pending_lang_change
;
870 /* Information recorded about each file examined during compilation. */
874 int time
; /* Time spent in the file. */
876 /* Flags used only by C++.
877 INTERFACE_ONLY nonzero means that we are in an "interface" section
878 of the compiler. INTERFACE_UNKNOWN nonzero means we cannot trust
879 the value of INTERFACE_ONLY. If INTERFACE_UNKNOWN is zero and
880 INTERFACE_ONLY is zero, it means that we are responsible for
881 exporting definitions that others might need. */
882 short interface_only
;
883 short interface_unknown
;
886 struct c_fileinfo
*get_fileinfo (const char *);
887 extern void dump_time_statistics (void);
889 extern bool c_dump_tree (void *, tree
);
891 extern void c_warn_unused_result (gimple_seq
);
893 extern void verify_sequence_points (tree
);
895 extern tree
fold_offsetof (tree
, tree
);
897 /* Places where an lvalue, or modifiable lvalue, may be required.
898 Used to select diagnostic messages in lvalue_error and
908 extern void lvalue_error (enum lvalue_use
);
910 extern int complete_array_type (tree
*, tree
, bool);
912 extern tree
builtin_type_for_size (int, bool);
914 extern void warn_array_subscript_with_type_char (tree
);
915 extern void warn_about_parentheses (enum tree_code
, enum tree_code
,
917 extern void warn_for_unused_label (tree label
);
918 extern void warn_for_div_by_zero (tree divisor
);
919 extern void warn_for_sign_compare (location_t
,
920 tree orig_op0
, tree orig_op1
,
923 enum tree_code resultcode
);
925 /* In c-gimplify.c */
926 extern void c_genericize (tree
);
927 extern int c_gimplify_expr (tree
*, gimple_seq
*, gimple_seq
*);
928 extern tree
c_build_bind_expr (tree
, tree
);
931 extern void pch_init (void);
932 extern int c_common_valid_pch (cpp_reader
*pfile
, const char *name
, int fd
);
933 extern void c_common_read_pch (cpp_reader
*pfile
, const char *name
, int fd
,
935 extern void c_common_write_pch (void);
936 extern void c_common_no_more_pch (void);
937 extern void c_common_pch_pragma (cpp_reader
*pfile
, const char *);
938 extern void c_common_print_pch_checksum (FILE *f
);
940 /* In *-checksum.c */
941 extern const unsigned char executable_checksum
[16];
943 /* In c-cppbuiltin.c */
944 extern void builtin_define_std (const char *macro
);
945 extern void builtin_define_with_value (const char *, const char *, int);
946 extern void c_stddef_cpp_builtins (void);
947 extern void fe_file_change (const struct line_map
*);
948 extern void c_parse_error (const char *, enum cpp_ttype
, tree
);
950 /* Objective-C / Objective-C++ entry points. */
952 /* The following ObjC/ObjC++ functions are called by the C and/or C++
953 front-ends; they all must have corresponding stubs in stub-objc.c. */
954 extern tree
objc_is_class_name (tree
);
955 extern tree
objc_is_object_ptr (tree
);
956 extern void objc_check_decl (tree
);
957 extern int objc_is_reserved_word (tree
);
958 extern bool objc_compare_types (tree
, tree
, int, tree
);
959 extern void objc_volatilize_decl (tree
);
960 extern bool objc_type_quals_match (tree
, tree
);
961 extern tree
objc_rewrite_function_call (tree
, tree
);
962 extern tree
objc_message_selector (void);
963 extern tree
objc_lookup_ivar (tree
, tree
);
964 extern void objc_clear_super_receiver (void);
965 extern int objc_is_public (tree
, tree
);
966 extern tree
objc_is_id (tree
);
967 extern void objc_declare_alias (tree
, tree
);
968 extern void objc_declare_class (tree
);
969 extern void objc_declare_protocols (tree
);
970 extern tree
objc_build_message_expr (tree
);
971 extern tree
objc_finish_message_expr (tree
, tree
, tree
);
972 extern tree
objc_build_selector_expr (tree
);
973 extern tree
objc_build_protocol_expr (tree
);
974 extern tree
objc_build_encode_expr (tree
);
975 extern tree
objc_build_string_object (tree
);
976 extern tree
objc_get_protocol_qualified_type (tree
, tree
);
977 extern tree
objc_get_class_reference (tree
);
978 extern tree
objc_get_class_ivars (tree
);
979 extern void objc_start_class_interface (tree
, tree
, tree
);
980 extern void objc_start_category_interface (tree
, tree
, tree
);
981 extern void objc_start_protocol (tree
, tree
);
982 extern void objc_continue_interface (void);
983 extern void objc_finish_interface (void);
984 extern void objc_start_class_implementation (tree
, tree
);
985 extern void objc_start_category_implementation (tree
, tree
);
986 extern void objc_continue_implementation (void);
987 extern void objc_finish_implementation (void);
988 extern void objc_set_visibility (int);
989 extern void objc_set_method_type (enum tree_code
);
990 extern tree
objc_build_method_signature (tree
, tree
, tree
, bool);
991 extern void objc_add_method_declaration (tree
);
992 extern void objc_start_method_definition (tree
);
993 extern void objc_finish_method_definition (tree
);
994 extern void objc_add_instance_variable (tree
);
995 extern tree
objc_build_keyword_decl (tree
, tree
, tree
);
996 extern tree
objc_build_throw_stmt (tree
);
997 extern void objc_begin_try_stmt (location_t
, tree
);
998 extern tree
objc_finish_try_stmt (void);
999 extern void objc_begin_catch_clause (tree
);
1000 extern void objc_finish_catch_clause (void);
1001 extern void objc_build_finally_clause (location_t
, tree
);
1002 extern tree
objc_build_synchronized (location_t
, tree
, tree
);
1003 extern int objc_static_init_needed_p (void);
1004 extern tree
objc_generate_static_init_call (tree
);
1005 extern tree
objc_generate_write_barrier (tree
, enum tree_code
, tree
);
1007 /* The following are provided by the C and C++ front-ends, and called by
1009 extern void *objc_get_current_scope (void);
1010 extern void objc_mark_locals_volatile (void *);
1012 /* In c-ppoutput.c */
1013 extern void init_pp_output (FILE *);
1014 extern void preprocess_file (cpp_reader
*);
1015 extern void pp_file_change (const struct line_map
*);
1016 extern void pp_dir_change (cpp_reader
*, const char *);
1017 extern bool check_missing_format_attribute (tree
, tree
);
1020 extern tree
c_finish_omp_master (tree
);
1021 extern tree
c_finish_omp_critical (tree
, tree
);
1022 extern tree
c_finish_omp_ordered (tree
);
1023 extern void c_finish_omp_barrier (void);
1024 extern tree
c_finish_omp_atomic (enum tree_code
, tree
, tree
);
1025 extern void c_finish_omp_flush (void);
1026 extern void c_finish_omp_taskwait (void);
1027 extern tree
c_finish_omp_for (location_t
, tree
, tree
, tree
, tree
, tree
, tree
);
1028 extern void c_split_parallel_clauses (tree
, tree
*, tree
*);
1029 extern enum omp_clause_default_kind
c_omp_predetermined_sharing (tree
);
1031 /* Not in c-omp.c; provided by the front end. */
1032 extern bool c_omp_sharing_predetermined (tree
);
1033 extern tree
c_omp_remap_decl (tree
, bool);
1035 /* In order for the format checking to accept the C frontend
1036 diagnostic framework extensions, you must include this file before
1037 toplev.h, not after. The C front end formats are a subset of those
1038 for C++, so they are the appropriate set to use in common code;
1039 cp-tree.h overrides this for C++. */
1040 #ifndef GCC_DIAG_STYLE
1041 #define GCC_DIAG_STYLE __gcc_cdiag__
1044 #endif /* ! GCC_C_COMMON_H */