1/* Definitions for c-common.c.
2 Copyright (C) 1987, 1993, 1994, 1995, 1997, 1998,
3 1999, 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
4
5This file is part of GCC.
6
7GCC is free software; you can redistribute it and/or modify it under
8the terms of the GNU General Public License as published by the Free
9Software Foundation; either version 2, or (at your option) any later
10version.
11
12GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13WARRANTY; without even the implied warranty of MERCHANTABILITY or
14FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15for more details.
16
17You should have received a copy of the GNU General Public License
18along with GCC; see the file COPYING. If not, write to the Free
19Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
2002110-1301, USA. */
21
22#ifndef GCC_C_COMMON_H
23#define GCC_C_COMMON_H
24
25#include "splay-tree.h"
26#include "cpplib.h"
27#include "ggc.h"
28
29/* Usage of TREE_LANG_FLAG_?:
30 0: TREE_NEGATED_INT (in INTEGER_CST).
31 IDENTIFIER_MARKED (used by search routines).
32 DECL_PRETTY_FUNCTION_P (in VAR_DECL)
33 1: C_DECLARED_LABEL_FLAG (in LABEL_DECL)
34 STATEMENT_LIST_STMT_EXPR (in STATEMENT_LIST)
35 2: unused
36 3: STATEMENT_LIST_HAS_LABEL (in STATEMENT_LIST)
37 4: unused
38*/
39
40/* Reserved identifiers. This is the union of all the keywords for C,
41 C++, and Objective-C. All the type modifiers have to be in one
42 block at the beginning, because they are used as mask bits. There
43 are 27 type modifiers; if we add many more we will have to redesign
44 the mask mechanism. */
45
46enum rid
47{
48 /* Modifiers: */
49 /* C, in empirical order of frequency. */
50 RID_STATIC = 0,
51 RID_UNSIGNED, RID_LONG, RID_CONST, RID_EXTERN,
52 RID_REGISTER, RID_TYPEDEF, RID_SHORT, RID_INLINE,
53 RID_VOLATILE, RID_SIGNED, RID_AUTO, RID_RESTRICT,
54
55 /* C extensions */
56 RID_COMPLEX, RID_THREAD,
57
58 /* C++ */
59 RID_FRIEND, RID_VIRTUAL, RID_EXPLICIT, RID_EXPORT, RID_MUTABLE,
60
61 /* ObjC */
62 RID_IN, RID_OUT, RID_INOUT, RID_BYCOPY, RID_BYREF, RID_ONEWAY,
63
64 /* C */
65 RID_INT, RID_CHAR, RID_FLOAT, RID_DOUBLE, RID_VOID,
66 RID_ENUM, RID_STRUCT, RID_UNION, RID_IF, RID_ELSE,
67 RID_WHILE, RID_DO, RID_FOR, RID_SWITCH, RID_CASE,
68 RID_DEFAULT, RID_BREAK, RID_CONTINUE, RID_RETURN, RID_GOTO,
69 RID_SIZEOF,
70
71 /* C extensions */
72 RID_ASM, RID_TYPEOF, RID_ALIGNOF, RID_ATTRIBUTE, RID_VA_ARG,
73 RID_EXTENSION, RID_IMAGPART, RID_REALPART, RID_LABEL, RID_CHOOSE_EXPR,
74 RID_TYPES_COMPATIBLE_P,
75 RID_DFLOAT32, RID_DFLOAT64, RID_DFLOAT128,
76
77 /* Too many ways of getting the name of a function as a string */
78 RID_FUNCTION_NAME, RID_PRETTY_FUNCTION_NAME, RID_C99_FUNCTION_NAME,
79
80 /* C++ */
81 RID_BOOL, RID_WCHAR, RID_CLASS,
82 RID_PUBLIC, RID_PRIVATE, RID_PROTECTED,
83 RID_TEMPLATE, RID_NULL, RID_CATCH,
84 RID_DELETE, RID_FALSE, RID_NAMESPACE,
85 RID_NEW, RID_OFFSETOF, RID_OPERATOR,
86 RID_THIS, RID_THROW, RID_TRUE,
87 RID_TRY, RID_TYPENAME, RID_TYPEID,
88 RID_USING,
89
90 /* casts */
91 RID_CONSTCAST, RID_DYNCAST, RID_REINTCAST, RID_STATCAST,
92
93 /* Objective-C */
94 RID_AT_ENCODE, RID_AT_END,
95 RID_AT_CLASS, RID_AT_ALIAS, RID_AT_DEFS,
96 RID_AT_PRIVATE, RID_AT_PROTECTED, RID_AT_PUBLIC,
97 RID_AT_PROTOCOL, RID_AT_SELECTOR,
98 RID_AT_THROW, RID_AT_TRY, RID_AT_CATCH,
99 RID_AT_FINALLY, RID_AT_SYNCHRONIZED,
100 RID_AT_INTERFACE,
101 RID_AT_IMPLEMENTATION,
102
103 RID_MAX,
104
105 RID_FIRST_MODIFIER = RID_STATIC,
106 RID_LAST_MODIFIER = RID_ONEWAY,
107
108 RID_FIRST_AT = RID_AT_ENCODE,
109 RID_LAST_AT = RID_AT_IMPLEMENTATION,
110 RID_FIRST_PQ = RID_IN,
111 RID_LAST_PQ = RID_ONEWAY
112};
113
114#define OBJC_IS_AT_KEYWORD(rid) \
115 ((unsigned int) (rid) >= (unsigned int) RID_FIRST_AT && \
116 (unsigned int) (rid) <= (unsigned int) RID_LAST_AT)
117
118#define OBJC_IS_PQ_KEYWORD(rid) \
119 ((unsigned int) (rid) >= (unsigned int) RID_FIRST_PQ && \
120 (unsigned int) (rid) <= (unsigned int) RID_LAST_PQ)
121
122/* The elements of `ridpointers' are identifier nodes for the reserved
123 type names and storage classes. It is indexed by a RID_... value. */
124extern GTY ((length ("(int) RID_MAX"))) tree *ridpointers;
125
126/* Standard named or nameless data types of the C compiler. */
127
128enum c_tree_index
129{
130 CTI_WCHAR_TYPE,
131 CTI_SIGNED_WCHAR_TYPE,
132 CTI_UNSIGNED_WCHAR_TYPE,
133 CTI_WINT_TYPE,
134 CTI_SIGNED_SIZE_TYPE, /* For format checking only. */
135 CTI_UNSIGNED_PTRDIFF_TYPE, /* For format checking only. */
136 CTI_INTMAX_TYPE,
137 CTI_UINTMAX_TYPE,
138 CTI_WIDEST_INT_LIT_TYPE,
139 CTI_WIDEST_UINT_LIT_TYPE,
140
141 CTI_CHAR_ARRAY_TYPE,
142 CTI_WCHAR_ARRAY_TYPE,
143 CTI_INT_ARRAY_TYPE,
144 CTI_STRING_TYPE,
145 CTI_CONST_STRING_TYPE,
146
147 /* Type for boolean expressions (bool in C++, int in C). */
148 CTI_TRUTHVALUE_TYPE,
149 CTI_TRUTHVALUE_TRUE,
150 CTI_TRUTHVALUE_FALSE,
151
152 CTI_DEFAULT_FUNCTION_TYPE,
153
154 /* These are not types, but we have to look them up all the time. */
155 CTI_FUNCTION_NAME_DECL,
156 CTI_PRETTY_FUNCTION_NAME_DECL,
157 CTI_C99_FUNCTION_NAME_DECL,
158 CTI_SAVED_FUNCTION_NAME_DECLS,
159
160 CTI_VOID_ZERO,
161
162 CTI_NULL,
163
164 CTI_MAX
165};
166
167#define C_RID_CODE(id) (((struct c_common_identifier *) (id))->node.rid_code)
168
169/* Identifier part common to the C front ends. Inherits from
170 tree_identifier, despite appearances. */
171struct c_common_identifier GTY(())
172{
173 struct tree_common common;
174 struct cpp_hashnode node;
175};
176
177#define wchar_type_node c_global_trees[CTI_WCHAR_TYPE]
178#define signed_wchar_type_node c_global_trees[CTI_SIGNED_WCHAR_TYPE]
179#define unsigned_wchar_type_node c_global_trees[CTI_UNSIGNED_WCHAR_TYPE]
180#define wint_type_node c_global_trees[CTI_WINT_TYPE]
181#define signed_size_type_node c_global_trees[CTI_SIGNED_SIZE_TYPE]
182#define unsigned_ptrdiff_type_node c_global_trees[CTI_UNSIGNED_PTRDIFF_TYPE]
183#define intmax_type_node c_global_trees[CTI_INTMAX_TYPE]
184#define uintmax_type_node c_global_trees[CTI_UINTMAX_TYPE]
185#define widest_integer_literal_type_node c_global_trees[CTI_WIDEST_INT_LIT_TYPE]
186#define widest_unsigned_literal_type_node c_global_trees[CTI_WIDEST_UINT_LIT_TYPE]
187
188#define truthvalue_type_node c_global_trees[CTI_TRUTHVALUE_TYPE]
189#define truthvalue_true_node c_global_trees[CTI_TRUTHVALUE_TRUE]
190#define truthvalue_false_node c_global_trees[CTI_TRUTHVALUE_FALSE]
191
192#define char_array_type_node c_global_trees[CTI_CHAR_ARRAY_TYPE]
193#define wchar_array_type_node c_global_trees[CTI_WCHAR_ARRAY_TYPE]
194#define int_array_type_node c_global_trees[CTI_INT_ARRAY_TYPE]
195#define string_type_node c_global_trees[CTI_STRING_TYPE]
196#define const_string_type_node c_global_trees[CTI_CONST_STRING_TYPE]
197
198#define default_function_type c_global_trees[CTI_DEFAULT_FUNCTION_TYPE]
199
200#define function_name_decl_node c_global_trees[CTI_FUNCTION_NAME_DECL]
201#define pretty_function_name_decl_node c_global_trees[CTI_PRETTY_FUNCTION_NAME_DECL]
202#define c99_function_name_decl_node c_global_trees[CTI_C99_FUNCTION_NAME_DECL]
203#define saved_function_name_decls c_global_trees[CTI_SAVED_FUNCTION_NAME_DECLS]
204
205/* A node for `((void) 0)'. */
206#define void_zero_node c_global_trees[CTI_VOID_ZERO]
207
208/* The node for C++ `__null'. */
209#define null_node c_global_trees[CTI_NULL]
210
211extern GTY(()) tree c_global_trees[CTI_MAX];
212
213/* In a RECORD_TYPE, a sorted array of the fields of the type, not a
214 tree for size reasons. */
215struct sorted_fields_type GTY(())
216{
217 int len;
218 tree GTY((length ("%h.len"))) elts[1];
219};
220
221/* Mark which labels are explicitly declared.
222 These may be shadowed, and may be referenced from nested functions. */
223#define C_DECLARED_LABEL_FLAG(label) TREE_LANG_FLAG_1 (label)
224
225typedef enum c_language_kind
226{
227 clk_c = 0, /* C90, C94 or C99 */
228 clk_objc = 1, /* clk_c with ObjC features. */
229 clk_cxx = 2, /* ANSI/ISO C++ */
230 clk_objcxx = 3 /* clk_cxx with ObjC features. */
231}
232c_language_kind;
233
234/* To test for a specific language use c_language, defined by each
235 front end. For "ObjC features" or "not C++" use the macros. */
236extern c_language_kind c_language;
237
238#define c_dialect_cxx() (c_language & clk_cxx)
239#define c_dialect_objc() (c_language & clk_objc)
240
241/* Information about a statement tree. */
242
243struct stmt_tree_s GTY(()) {
244 /* The current statement list being collected. */
245 tree x_cur_stmt_list;
246
247 /* In C++, Nonzero if we should treat statements as full
248 expressions. In particular, this variable is no-zero if at the
249 end of a statement we should destroy any temporaries created
250 during that statement. Similarly, if, at the end of a block, we
251 should destroy any local variables in this block. Normally, this
252 variable is nonzero, since those are the normal semantics of
253 C++.
254
255 However, in order to represent aggregate initialization code as
256 tree structure, we use statement-expressions. The statements
257 within the statement expression should not result in cleanups
258 being run until the entire enclosing statement is complete.
259
260 This flag has no effect in C. */
261 int stmts_are_full_exprs_p;
262};
263
264typedef struct stmt_tree_s *stmt_tree;
265
266/* Global state pertinent to the current function. Some C dialects
267 extend this structure with additional fields. */
268
269struct c_language_function GTY(()) {
270 /* While we are parsing the function, this contains information
271 about the statement-tree that we are building. */
272 struct stmt_tree_s x_stmt_tree;
273};
274
275/* When building a statement-tree, this is the current statement list
276 being collected. It's TREE_CHAIN is a back-pointer to the previous
277 statement list. */
278
279#define cur_stmt_list (current_stmt_tree ()->x_cur_stmt_list)
280
281/* Language-specific hooks. */
282
283/* Callback that determines if it's ok for a function to have no
284 noreturn attribute. */
285extern int (*lang_missing_noreturn_ok_p) (tree);
286
287/* If non-NULL, this function is called after a precompile header file
288 is loaded. */
289extern void (*lang_post_pch_load) (void);
290
291extern void push_file_scope (void);
292extern void pop_file_scope (void);
293extern stmt_tree current_stmt_tree (void);
294extern tree push_stmt_list (void);
295extern tree pop_stmt_list (tree);
296extern tree add_stmt (tree);
297extern void push_cleanup (tree, tree, bool);
298extern tree pushdecl_top_level (tree);
299extern tree pushdecl (tree);
300extern tree build_modify_expr (tree, enum tree_code, tree);
301extern tree build_indirect_ref (tree, const char *);
302
303extern int c_expand_decl (tree);
304
305extern int field_decl_cmp (const void *, const void *);
306extern void resort_sorted_fields (void *, void *, gt_pointer_operator,
307 void *);
308extern bool has_c_linkage (tree decl);
309
310/* Switches common to the C front ends. */
311
312/* Nonzero if prepreprocessing only. */
313
314extern int flag_preprocess_only;
315
316/* Zero means that faster, ...NonNil variants of objc_msgSend...
317 calls will be used in ObjC; passing nil receivers to such calls
318 will most likely result in crashes. */
319extern int flag_nil_receivers;
320
321/* Nonzero means that we will allow new ObjC exception syntax (@throw,
322 @try, etc.) in source code. */
323extern int flag_objc_exceptions;
324
325/* Nonzero means that we generate NeXT setjmp based exceptions. */
326extern int flag_objc_sjlj_exceptions;
327
328/* Nonzero means that code generation will be altered to support
329 "zero-link" execution. This currently affects ObjC only, but may
330 affect other languages in the future. */
331extern int flag_zero_link;
332
333/* Nonzero means emit an '__OBJC, __image_info' for the current translation
334 unit. It will inform the ObjC runtime that class definition(s) herein
335 contained are to replace one(s) previously loaded. */
336extern int flag_replace_objc_classes;
337
338/* Nonzero means don't output line number information. */
339
340extern char flag_no_line_commands;
341
342/* Nonzero causes -E output not to be done, but directives such as
343 #define that have side effects are still obeyed. */
344
345extern char flag_no_output;
346
347/* Nonzero means dump macros in some fashion; contains the 'D', 'M' or
348 'N' of the command line switch. */
349
350extern char flag_dump_macros;
351
352/* Nonzero means pass #include lines through to the output. */
353
354extern char flag_dump_includes;
355
356/* Nonzero means process PCH files while preprocessing. */
357
358extern bool flag_pch_preprocess;
359
360/* The file name to which we should write a precompiled header, or
361 NULL if no header will be written in this compile. */
362
363extern const char *pch_file;
364
365/* Nonzero if an ISO standard was selected. It rejects macros in the
366 user's namespace. */
367
368extern int flag_iso;
369
370/* Nonzero if -undef was given. It suppresses target built-in macros
371 and assertions. */
372
373extern int flag_undef;
374
375/* Nonzero means don't recognize the non-ANSI builtin functions. */
376
377extern int flag_no_builtin;
378
379/* Nonzero means don't recognize the non-ANSI builtin functions.
380 -ansi sets this. */
381
382extern int flag_no_nonansi_builtin;
383
384/* Nonzero means give `double' the same size as `float'. */
385
386extern int flag_short_double;
387
388/* Nonzero means give `wchar_t' the same size as `short'. */
389
390extern int flag_short_wchar;
391
| 1/* Definitions for c-common.c.
2 Copyright (C) 1987, 1993, 1994, 1995, 1997, 1998,
3 1999, 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
4
5This file is part of GCC.
6
7GCC is free software; you can redistribute it and/or modify it under
8the terms of the GNU General Public License as published by the Free
9Software Foundation; either version 2, or (at your option) any later
10version.
11
12GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13WARRANTY; without even the implied warranty of MERCHANTABILITY or
14FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15for more details.
16
17You should have received a copy of the GNU General Public License
18along with GCC; see the file COPYING. If not, write to the Free
19Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
2002110-1301, USA. */
21
22#ifndef GCC_C_COMMON_H
23#define GCC_C_COMMON_H
24
25#include "splay-tree.h"
26#include "cpplib.h"
27#include "ggc.h"
28
29/* Usage of TREE_LANG_FLAG_?:
30 0: TREE_NEGATED_INT (in INTEGER_CST).
31 IDENTIFIER_MARKED (used by search routines).
32 DECL_PRETTY_FUNCTION_P (in VAR_DECL)
33 1: C_DECLARED_LABEL_FLAG (in LABEL_DECL)
34 STATEMENT_LIST_STMT_EXPR (in STATEMENT_LIST)
35 2: unused
36 3: STATEMENT_LIST_HAS_LABEL (in STATEMENT_LIST)
37 4: unused
38*/
39
40/* Reserved identifiers. This is the union of all the keywords for C,
41 C++, and Objective-C. All the type modifiers have to be in one
42 block at the beginning, because they are used as mask bits. There
43 are 27 type modifiers; if we add many more we will have to redesign
44 the mask mechanism. */
45
46enum rid
47{
48 /* Modifiers: */
49 /* C, in empirical order of frequency. */
50 RID_STATIC = 0,
51 RID_UNSIGNED, RID_LONG, RID_CONST, RID_EXTERN,
52 RID_REGISTER, RID_TYPEDEF, RID_SHORT, RID_INLINE,
53 RID_VOLATILE, RID_SIGNED, RID_AUTO, RID_RESTRICT,
54
55 /* C extensions */
56 RID_COMPLEX, RID_THREAD,
57
58 /* C++ */
59 RID_FRIEND, RID_VIRTUAL, RID_EXPLICIT, RID_EXPORT, RID_MUTABLE,
60
61 /* ObjC */
62 RID_IN, RID_OUT, RID_INOUT, RID_BYCOPY, RID_BYREF, RID_ONEWAY,
63
64 /* C */
65 RID_INT, RID_CHAR, RID_FLOAT, RID_DOUBLE, RID_VOID,
66 RID_ENUM, RID_STRUCT, RID_UNION, RID_IF, RID_ELSE,
67 RID_WHILE, RID_DO, RID_FOR, RID_SWITCH, RID_CASE,
68 RID_DEFAULT, RID_BREAK, RID_CONTINUE, RID_RETURN, RID_GOTO,
69 RID_SIZEOF,
70
71 /* C extensions */
72 RID_ASM, RID_TYPEOF, RID_ALIGNOF, RID_ATTRIBUTE, RID_VA_ARG,
73 RID_EXTENSION, RID_IMAGPART, RID_REALPART, RID_LABEL, RID_CHOOSE_EXPR,
74 RID_TYPES_COMPATIBLE_P,
75 RID_DFLOAT32, RID_DFLOAT64, RID_DFLOAT128,
76
77 /* Too many ways of getting the name of a function as a string */
78 RID_FUNCTION_NAME, RID_PRETTY_FUNCTION_NAME, RID_C99_FUNCTION_NAME,
79
80 /* C++ */
81 RID_BOOL, RID_WCHAR, RID_CLASS,
82 RID_PUBLIC, RID_PRIVATE, RID_PROTECTED,
83 RID_TEMPLATE, RID_NULL, RID_CATCH,
84 RID_DELETE, RID_FALSE, RID_NAMESPACE,
85 RID_NEW, RID_OFFSETOF, RID_OPERATOR,
86 RID_THIS, RID_THROW, RID_TRUE,
87 RID_TRY, RID_TYPENAME, RID_TYPEID,
88 RID_USING,
89
90 /* casts */
91 RID_CONSTCAST, RID_DYNCAST, RID_REINTCAST, RID_STATCAST,
92
93 /* Objective-C */
94 RID_AT_ENCODE, RID_AT_END,
95 RID_AT_CLASS, RID_AT_ALIAS, RID_AT_DEFS,
96 RID_AT_PRIVATE, RID_AT_PROTECTED, RID_AT_PUBLIC,
97 RID_AT_PROTOCOL, RID_AT_SELECTOR,
98 RID_AT_THROW, RID_AT_TRY, RID_AT_CATCH,
99 RID_AT_FINALLY, RID_AT_SYNCHRONIZED,
100 RID_AT_INTERFACE,
101 RID_AT_IMPLEMENTATION,
102
103 RID_MAX,
104
105 RID_FIRST_MODIFIER = RID_STATIC,
106 RID_LAST_MODIFIER = RID_ONEWAY,
107
108 RID_FIRST_AT = RID_AT_ENCODE,
109 RID_LAST_AT = RID_AT_IMPLEMENTATION,
110 RID_FIRST_PQ = RID_IN,
111 RID_LAST_PQ = RID_ONEWAY
112};
113
114#define OBJC_IS_AT_KEYWORD(rid) \
115 ((unsigned int) (rid) >= (unsigned int) RID_FIRST_AT && \
116 (unsigned int) (rid) <= (unsigned int) RID_LAST_AT)
117
118#define OBJC_IS_PQ_KEYWORD(rid) \
119 ((unsigned int) (rid) >= (unsigned int) RID_FIRST_PQ && \
120 (unsigned int) (rid) <= (unsigned int) RID_LAST_PQ)
121
122/* The elements of `ridpointers' are identifier nodes for the reserved
123 type names and storage classes. It is indexed by a RID_... value. */
124extern GTY ((length ("(int) RID_MAX"))) tree *ridpointers;
125
126/* Standard named or nameless data types of the C compiler. */
127
128enum c_tree_index
129{
130 CTI_WCHAR_TYPE,
131 CTI_SIGNED_WCHAR_TYPE,
132 CTI_UNSIGNED_WCHAR_TYPE,
133 CTI_WINT_TYPE,
134 CTI_SIGNED_SIZE_TYPE, /* For format checking only. */
135 CTI_UNSIGNED_PTRDIFF_TYPE, /* For format checking only. */
136 CTI_INTMAX_TYPE,
137 CTI_UINTMAX_TYPE,
138 CTI_WIDEST_INT_LIT_TYPE,
139 CTI_WIDEST_UINT_LIT_TYPE,
140
141 CTI_CHAR_ARRAY_TYPE,
142 CTI_WCHAR_ARRAY_TYPE,
143 CTI_INT_ARRAY_TYPE,
144 CTI_STRING_TYPE,
145 CTI_CONST_STRING_TYPE,
146
147 /* Type for boolean expressions (bool in C++, int in C). */
148 CTI_TRUTHVALUE_TYPE,
149 CTI_TRUTHVALUE_TRUE,
150 CTI_TRUTHVALUE_FALSE,
151
152 CTI_DEFAULT_FUNCTION_TYPE,
153
154 /* These are not types, but we have to look them up all the time. */
155 CTI_FUNCTION_NAME_DECL,
156 CTI_PRETTY_FUNCTION_NAME_DECL,
157 CTI_C99_FUNCTION_NAME_DECL,
158 CTI_SAVED_FUNCTION_NAME_DECLS,
159
160 CTI_VOID_ZERO,
161
162 CTI_NULL,
163
164 CTI_MAX
165};
166
167#define C_RID_CODE(id) (((struct c_common_identifier *) (id))->node.rid_code)
168
169/* Identifier part common to the C front ends. Inherits from
170 tree_identifier, despite appearances. */
171struct c_common_identifier GTY(())
172{
173 struct tree_common common;
174 struct cpp_hashnode node;
175};
176
177#define wchar_type_node c_global_trees[CTI_WCHAR_TYPE]
178#define signed_wchar_type_node c_global_trees[CTI_SIGNED_WCHAR_TYPE]
179#define unsigned_wchar_type_node c_global_trees[CTI_UNSIGNED_WCHAR_TYPE]
180#define wint_type_node c_global_trees[CTI_WINT_TYPE]
181#define signed_size_type_node c_global_trees[CTI_SIGNED_SIZE_TYPE]
182#define unsigned_ptrdiff_type_node c_global_trees[CTI_UNSIGNED_PTRDIFF_TYPE]
183#define intmax_type_node c_global_trees[CTI_INTMAX_TYPE]
184#define uintmax_type_node c_global_trees[CTI_UINTMAX_TYPE]
185#define widest_integer_literal_type_node c_global_trees[CTI_WIDEST_INT_LIT_TYPE]
186#define widest_unsigned_literal_type_node c_global_trees[CTI_WIDEST_UINT_LIT_TYPE]
187
188#define truthvalue_type_node c_global_trees[CTI_TRUTHVALUE_TYPE]
189#define truthvalue_true_node c_global_trees[CTI_TRUTHVALUE_TRUE]
190#define truthvalue_false_node c_global_trees[CTI_TRUTHVALUE_FALSE]
191
192#define char_array_type_node c_global_trees[CTI_CHAR_ARRAY_TYPE]
193#define wchar_array_type_node c_global_trees[CTI_WCHAR_ARRAY_TYPE]
194#define int_array_type_node c_global_trees[CTI_INT_ARRAY_TYPE]
195#define string_type_node c_global_trees[CTI_STRING_TYPE]
196#define const_string_type_node c_global_trees[CTI_CONST_STRING_TYPE]
197
198#define default_function_type c_global_trees[CTI_DEFAULT_FUNCTION_TYPE]
199
200#define function_name_decl_node c_global_trees[CTI_FUNCTION_NAME_DECL]
201#define pretty_function_name_decl_node c_global_trees[CTI_PRETTY_FUNCTION_NAME_DECL]
202#define c99_function_name_decl_node c_global_trees[CTI_C99_FUNCTION_NAME_DECL]
203#define saved_function_name_decls c_global_trees[CTI_SAVED_FUNCTION_NAME_DECLS]
204
205/* A node for `((void) 0)'. */
206#define void_zero_node c_global_trees[CTI_VOID_ZERO]
207
208/* The node for C++ `__null'. */
209#define null_node c_global_trees[CTI_NULL]
210
211extern GTY(()) tree c_global_trees[CTI_MAX];
212
213/* In a RECORD_TYPE, a sorted array of the fields of the type, not a
214 tree for size reasons. */
215struct sorted_fields_type GTY(())
216{
217 int len;
218 tree GTY((length ("%h.len"))) elts[1];
219};
220
221/* Mark which labels are explicitly declared.
222 These may be shadowed, and may be referenced from nested functions. */
223#define C_DECLARED_LABEL_FLAG(label) TREE_LANG_FLAG_1 (label)
224
225typedef enum c_language_kind
226{
227 clk_c = 0, /* C90, C94 or C99 */
228 clk_objc = 1, /* clk_c with ObjC features. */
229 clk_cxx = 2, /* ANSI/ISO C++ */
230 clk_objcxx = 3 /* clk_cxx with ObjC features. */
231}
232c_language_kind;
233
234/* To test for a specific language use c_language, defined by each
235 front end. For "ObjC features" or "not C++" use the macros. */
236extern c_language_kind c_language;
237
238#define c_dialect_cxx() (c_language & clk_cxx)
239#define c_dialect_objc() (c_language & clk_objc)
240
241/* Information about a statement tree. */
242
243struct stmt_tree_s GTY(()) {
244 /* The current statement list being collected. */
245 tree x_cur_stmt_list;
246
247 /* In C++, Nonzero if we should treat statements as full
248 expressions. In particular, this variable is no-zero if at the
249 end of a statement we should destroy any temporaries created
250 during that statement. Similarly, if, at the end of a block, we
251 should destroy any local variables in this block. Normally, this
252 variable is nonzero, since those are the normal semantics of
253 C++.
254
255 However, in order to represent aggregate initialization code as
256 tree structure, we use statement-expressions. The statements
257 within the statement expression should not result in cleanups
258 being run until the entire enclosing statement is complete.
259
260 This flag has no effect in C. */
261 int stmts_are_full_exprs_p;
262};
263
264typedef struct stmt_tree_s *stmt_tree;
265
266/* Global state pertinent to the current function. Some C dialects
267 extend this structure with additional fields. */
268
269struct c_language_function GTY(()) {
270 /* While we are parsing the function, this contains information
271 about the statement-tree that we are building. */
272 struct stmt_tree_s x_stmt_tree;
273};
274
275/* When building a statement-tree, this is the current statement list
276 being collected. It's TREE_CHAIN is a back-pointer to the previous
277 statement list. */
278
279#define cur_stmt_list (current_stmt_tree ()->x_cur_stmt_list)
280
281/* Language-specific hooks. */
282
283/* Callback that determines if it's ok for a function to have no
284 noreturn attribute. */
285extern int (*lang_missing_noreturn_ok_p) (tree);
286
287/* If non-NULL, this function is called after a precompile header file
288 is loaded. */
289extern void (*lang_post_pch_load) (void);
290
291extern void push_file_scope (void);
292extern void pop_file_scope (void);
293extern stmt_tree current_stmt_tree (void);
294extern tree push_stmt_list (void);
295extern tree pop_stmt_list (tree);
296extern tree add_stmt (tree);
297extern void push_cleanup (tree, tree, bool);
298extern tree pushdecl_top_level (tree);
299extern tree pushdecl (tree);
300extern tree build_modify_expr (tree, enum tree_code, tree);
301extern tree build_indirect_ref (tree, const char *);
302
303extern int c_expand_decl (tree);
304
305extern int field_decl_cmp (const void *, const void *);
306extern void resort_sorted_fields (void *, void *, gt_pointer_operator,
307 void *);
308extern bool has_c_linkage (tree decl);
309
310/* Switches common to the C front ends. */
311
312/* Nonzero if prepreprocessing only. */
313
314extern int flag_preprocess_only;
315
316/* Zero means that faster, ...NonNil variants of objc_msgSend...
317 calls will be used in ObjC; passing nil receivers to such calls
318 will most likely result in crashes. */
319extern int flag_nil_receivers;
320
321/* Nonzero means that we will allow new ObjC exception syntax (@throw,
322 @try, etc.) in source code. */
323extern int flag_objc_exceptions;
324
325/* Nonzero means that we generate NeXT setjmp based exceptions. */
326extern int flag_objc_sjlj_exceptions;
327
328/* Nonzero means that code generation will be altered to support
329 "zero-link" execution. This currently affects ObjC only, but may
330 affect other languages in the future. */
331extern int flag_zero_link;
332
333/* Nonzero means emit an '__OBJC, __image_info' for the current translation
334 unit. It will inform the ObjC runtime that class definition(s) herein
335 contained are to replace one(s) previously loaded. */
336extern int flag_replace_objc_classes;
337
338/* Nonzero means don't output line number information. */
339
340extern char flag_no_line_commands;
341
342/* Nonzero causes -E output not to be done, but directives such as
343 #define that have side effects are still obeyed. */
344
345extern char flag_no_output;
346
347/* Nonzero means dump macros in some fashion; contains the 'D', 'M' or
348 'N' of the command line switch. */
349
350extern char flag_dump_macros;
351
352/* Nonzero means pass #include lines through to the output. */
353
354extern char flag_dump_includes;
355
356/* Nonzero means process PCH files while preprocessing. */
357
358extern bool flag_pch_preprocess;
359
360/* The file name to which we should write a precompiled header, or
361 NULL if no header will be written in this compile. */
362
363extern const char *pch_file;
364
365/* Nonzero if an ISO standard was selected. It rejects macros in the
366 user's namespace. */
367
368extern int flag_iso;
369
370/* Nonzero if -undef was given. It suppresses target built-in macros
371 and assertions. */
372
373extern int flag_undef;
374
375/* Nonzero means don't recognize the non-ANSI builtin functions. */
376
377extern int flag_no_builtin;
378
379/* Nonzero means don't recognize the non-ANSI builtin functions.
380 -ansi sets this. */
381
382extern int flag_no_nonansi_builtin;
383
384/* Nonzero means give `double' the same size as `float'. */
385
386extern int flag_short_double;
387
388/* Nonzero means give `wchar_t' the same size as `short'. */
389
390extern int flag_short_wchar;
391
|
392/* Nonzero means allow Microsoft extensions without warnings or errors. */
393extern int flag_ms_extensions;
394
395/* Nonzero means don't recognize the keyword `asm'. */
396
397extern int flag_no_asm;
398
399/* Nonzero means give string constants the type `const char *', as mandated
400 by the standard. */
401
402extern int flag_const_strings;
403
404/* Nonzero means to treat bitfields as signed unless they say `unsigned'. */
405
406extern int flag_signed_bitfields;
407
408/* Warn about #pragma directives that are not recognized. */
409
410extern int warn_unknown_pragmas; /* Tri state variable. */
411
412/* Warn about format/argument anomalies in calls to formatted I/O functions
413 (*printf, *scanf, strftime, strfmon, etc.). */
414
415extern int warn_format;
416
417
418/* C/ObjC language option variables. */
419
420
421/* Nonzero means allow type mismatches in conditional expressions;
422 just make their values `void'. */
423
424extern int flag_cond_mismatch;
425
426/* Nonzero means enable C89 Amendment 1 features. */
427
428extern int flag_isoc94;
429
430/* Nonzero means use the ISO C99 dialect of C. */
431
432extern int flag_isoc99;
433
434/* Nonzero means that we have builtin functions, and main is an int. */
435
436extern int flag_hosted;
437
438/* Warn if main is suspicious. */
439
440extern int warn_main;
441
442
443/* ObjC language option variables. */
444
445
446/* Open and close the file for outputting class declarations, if
447 requested (ObjC). */
448
449extern int flag_gen_declaration;
450
451/* Tells the compiler that this is a special run. Do not perform any
452 compiling, instead we are to test some platform dependent features
453 and output a C header file with appropriate definitions. */
454
455extern int print_struct_values;
456
457/* ???. Undocumented. */
458
459extern const char *constant_string_class_name;
460
461
462/* C++ language option variables. */
463
464
465/* Nonzero means don't recognize any extension keywords. */
466
467extern int flag_no_gnu_keywords;
468
469/* Nonzero means do emit exported implementations of functions even if
470 they can be inlined. */
471
472extern int flag_implement_inlines;
473
474/* Nonzero means that implicit instantiations will be emitted if needed. */
475
476extern int flag_implicit_templates;
477
478/* Nonzero means that implicit instantiations of inline templates will be
479 emitted if needed, even if instantiations of non-inline templates
480 aren't. */
481
482extern int flag_implicit_inline_templates;
483
484/* Nonzero means generate separate instantiation control files and
485 juggle them at link time. */
486
487extern int flag_use_repository;
488
489/* Nonzero if we want to issue diagnostics that the standard says are not
490 required. */
491
492extern int flag_optional_diags;
493
494/* Nonzero means we should attempt to elide constructors when possible. */
495
496extern int flag_elide_constructors;
497
498/* Nonzero means that member functions defined in class scope are
499 inline by default. */
500
501extern int flag_default_inline;
502
503/* Controls whether compiler generates 'type descriptor' that give
504 run-time type information. */
505
506extern int flag_rtti;
507
508/* Nonzero if we want to conserve space in the .o files. We do this
509 by putting uninitialized data and runtime initialized data into
510 .common instead of .data at the expense of not flagging multiple
511 definitions. */
512
513extern int flag_conserve_space;
514
515/* Nonzero if we want to obey access control semantics. */
516
517extern int flag_access_control;
518
519/* Nonzero if we want to check the return value of new and avoid calling
520 constructors if it is a null pointer. */
521
522extern int flag_check_new;
523
524/* Nonzero if we want the new ISO rules for pushing a new scope for `for'
525 initialization variables.
526 0: Old rules, set by -fno-for-scope.
527 2: New ISO rules, set by -ffor-scope.
528 1: Try to implement new ISO rules, but with backup compatibility
529 (and warnings). This is the default, for now. */
530
531extern int flag_new_for_scope;
532
533/* Nonzero if we want to emit defined symbols with common-like linkage as
534 weak symbols where possible, in order to conform to C++ semantics.
535 Otherwise, emit them as local symbols. */
536
537extern int flag_weak;
538
539/* 0 means we want the preprocessor to not emit line directives for
540 the current working directory. 1 means we want it to do it. -1
541 means we should decide depending on whether debugging information
542 is being emitted or not. */
543
544extern int flag_working_directory;
545
546/* Nonzero to use __cxa_atexit, rather than atexit, to register
547 destructors for local statics and global objects. */
548
549extern int flag_use_cxa_atexit;
550
551/* Nonzero to use __cxa_get_exception_ptr in the C++ exception-handling
552 logic. */
553
554extern int flag_use_cxa_get_exception_ptr;
555
556/* Nonzero means make the default pedwarns warnings instead of errors.
557 The value of this flag is ignored if -pedantic is specified. */
558
559extern int flag_permissive;
560
561/* Nonzero means to implement standard semantics for exception
562 specifications, calling unexpected if an exception is thrown that
563 doesn't match the specification. Zero means to treat them as
564 assertions and optimize accordingly, but not check them. */
565
566extern int flag_enforce_eh_specs;
567
568/* Nonzero (the default) means to generate thread-safe code for
569 initializing local statics. */
570
571extern int flag_threadsafe_statics;
572
573/* Nonzero means warn about implicit declarations. */
574
575extern int warn_implicit;
576
577/* Warn about using __null (as NULL in C++) as sentinel. For code compiled
578 with GCC this doesn't matter as __null is guaranteed to have the right
579 size. */
580
581extern int warn_strict_null_sentinel;
582
583/* Maximum template instantiation depth. This limit is rather
584 arbitrary, but it exists to limit the time it takes to notice
585 infinite template instantiations. */
586
587extern int max_tinst_depth;
588
589/* Nonzero means the expression being parsed will never be evaluated.
590 This is a count, since unevaluated expressions can nest. */
591
592extern int skip_evaluation;
593
594/* C types are partitioned into three subsets: object, function, and
595 incomplete types. */
596#define C_TYPE_OBJECT_P(type) \
597 (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type))
598
599#define C_TYPE_INCOMPLETE_P(type) \
600 (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type) == 0)
601
602#define C_TYPE_FUNCTION_P(type) \
603 (TREE_CODE (type) == FUNCTION_TYPE)
604
605/* For convenience we define a single macro to identify the class of
606 object or incomplete types. */
607#define C_TYPE_OBJECT_OR_INCOMPLETE_P(type) \
608 (!C_TYPE_FUNCTION_P (type))
609
610/* Attribute table common to the C front ends. */
611extern const struct attribute_spec c_common_attribute_table[];
612extern const struct attribute_spec c_common_format_attribute_table[];
613
614/* Pointer to function to lazily generate the VAR_DECL for __FUNCTION__ etc.
615 ID is the identifier to use, NAME is the string.
616 TYPE_DEP indicates whether it depends on type of the function or not
617 (i.e. __PRETTY_FUNCTION__). */
618
619extern tree (*make_fname_decl) (tree, int);
620
621extern tree identifier_global_value (tree);
622extern void record_builtin_type (enum rid, const char *, tree);
623extern tree build_void_list_node (void);
624extern void start_fname_decls (void);
625extern void finish_fname_decls (void);
626extern const char *fname_as_string (int);
627extern tree fname_decl (unsigned, tree);
628
629extern void check_function_arguments (tree, tree, tree);
630extern void check_function_arguments_recurse (void (*)
631 (void *, tree,
632 unsigned HOST_WIDE_INT),
633 void *, tree,
634 unsigned HOST_WIDE_INT);
635extern void check_function_format (tree, tree);
636extern void set_Wformat (int);
637extern tree handle_format_attribute (tree *, tree, tree, int, bool *);
638extern tree handle_format_arg_attribute (tree *, tree, tree, int, bool *);
639extern int c_common_handle_option (size_t code, const char *arg, int value);
640extern bool c_common_missing_argument (const char *opt, size_t code);
641extern tree c_common_type_for_mode (enum machine_mode, int);
642extern tree c_common_type_for_size (unsigned int, int);
643extern tree c_common_unsigned_type (tree);
644extern tree c_common_signed_type (tree);
645extern tree c_common_signed_or_unsigned_type (int, tree);
646extern tree c_build_bitfield_integer_type (unsigned HOST_WIDE_INT, int);
647extern tree c_common_truthvalue_conversion (tree);
648extern void c_apply_type_quals_to_decl (int, tree);
649extern tree c_sizeof_or_alignof_type (tree, bool, int);
650extern tree c_alignof_expr (tree);
651/* Print an error message for invalid operands to arith operation CODE.
652 NOP_EXPR is used as a special case (see truthvalue_conversion). */
653extern void binary_op_error (enum tree_code, tree, tree);
654extern tree fix_string_type (tree);
655struct varray_head_tag;
656extern void constant_expression_warning (tree);
657extern bool strict_aliasing_warning (tree, tree, tree);
658extern void empty_body_warning (tree, tree);
659extern tree convert_and_check (tree, tree);
660extern void overflow_warning (tree);
661extern bool c_determine_visibility (tree);
662extern bool same_scalar_type_ignoring_signedness (tree, tree);
663
664#define c_sizeof(T) c_sizeof_or_alignof_type (T, true, 1)
665#define c_alignof(T) c_sizeof_or_alignof_type (T, false, 1)
666
667/* Subroutine of build_binary_op, used for comparison operations.
668 See if the operands have both been converted from subword integer types
669 and, if so, perhaps change them both back to their original type. */
670extern tree shorten_compare (tree *, tree *, tree *, enum tree_code *);
671
672extern tree pointer_int_sum (enum tree_code, tree, tree);
673extern unsigned int min_precision (tree, int);
674
675/* Add qualifiers to a type, in the fashion for C. */
676extern tree c_build_qualified_type (tree, int);
677
678/* Build tree nodes and builtin functions common to both C and C++ language
679 frontends. */
680extern void c_common_nodes_and_builtins (void);
681
682extern void set_builtin_user_assembler_name (tree decl, const char *asmspec);
683
684extern void disable_builtin_function (const char *);
685
686extern void set_compound_literal_name (tree decl);
687
688extern tree build_va_arg (tree, tree);
689
690extern unsigned int c_common_init_options (unsigned int, const char **);
691extern bool c_common_post_options (const char **);
692extern bool c_common_init (void);
693extern void c_common_finish (void);
694extern void c_common_parse_file (int);
695extern HOST_WIDE_INT c_common_get_alias_set (tree);
696extern void c_register_builtin_type (tree, const char*);
697extern bool c_promoting_integer_type_p (tree);
698extern int self_promoting_args_p (tree);
699extern tree strip_array_types (tree);
700extern tree strip_pointer_operator (tree);
701extern HOST_WIDE_INT c_common_to_target_charset (HOST_WIDE_INT);
702
703/* This is the basic parsing function. */
704extern void c_parse_file (void);
705/* This is misnamed, it actually performs end-of-compilation processing. */
706extern void finish_file (void);
707
708
709/* These macros provide convenient access to the various _STMT nodes. */
710
711/* Nonzero if a given STATEMENT_LIST represents the outermost binding
712 if a statement expression. */
713#define STATEMENT_LIST_STMT_EXPR(NODE) \
714 TREE_LANG_FLAG_1 (STATEMENT_LIST_CHECK (NODE))
715
716/* Nonzero if a label has been added to the statement list. */
717#define STATEMENT_LIST_HAS_LABEL(NODE) \
718 TREE_LANG_FLAG_3 (STATEMENT_LIST_CHECK (NODE))
719
720/* COMPOUND_LITERAL_EXPR accessors. */
721#define COMPOUND_LITERAL_EXPR_DECL_STMT(NODE) \
722 TREE_OPERAND (COMPOUND_LITERAL_EXPR_CHECK (NODE), 0)
723#define COMPOUND_LITERAL_EXPR_DECL(NODE) \
724 DECL_EXPR_DECL (COMPOUND_LITERAL_EXPR_DECL_STMT (NODE))
725
726#define DEFTREECODE(SYM, NAME, TYPE, LENGTH) SYM,
727
728enum c_tree_code {
729 C_DUMMY_TREE_CODE = LAST_AND_UNUSED_TREE_CODE,
730#include "c-common.def"
731 LAST_C_TREE_CODE
732};
733
734#undef DEFTREECODE
735
736extern int anon_aggr_type_p (tree);
737
738/* For a VAR_DECL that is an anonymous union, these are the various
739 sub-variables that make up the anonymous union. */
740#define DECL_ANON_UNION_ELEMS(NODE) DECL_ARGUMENTS ((NODE))
741
742/* In a FIELD_DECL, nonzero if the decl was originally a bitfield. */
743#define DECL_C_BIT_FIELD(NODE) \
744 (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) == 1)
745#define SET_DECL_C_BIT_FIELD(NODE) \
746 (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 1)
747#define CLEAR_DECL_C_BIT_FIELD(NODE) \
748 (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 0)
749
750extern void emit_local_var (tree);
751extern tree do_case (tree, tree);
752extern tree build_stmt (enum tree_code, ...);
753extern tree build_case_label (tree, tree, tree);
754
755/* These functions must be defined by each front-end which implements
756 a variant of the C language. They are used in c-common.c. */
757
758extern tree build_unary_op (enum tree_code, tree, int);
759extern tree build_binary_op (enum tree_code, tree, tree, int);
760extern tree perform_integral_promotions (tree);
761
762/* These functions must be defined by each front-end which implements
763 a variant of the C language. They are used by port files. */
764
765extern tree default_conversion (tree);
766
767/* Given two integer or real types, return the type for their sum.
768 Given two compatible ANSI C types, returns the merged type. */
769
770extern tree common_type (tree, tree);
771
772extern tree decl_constant_value (tree);
773
774/* Handle increment and decrement of boolean types. */
775extern tree boolean_increment (enum tree_code, tree);
776
777extern int case_compare (splay_tree_key, splay_tree_key);
778
779extern tree c_add_case_label (splay_tree, tree, tree, tree, tree);
780
781extern void c_do_switch_warnings (splay_tree, location_t, tree, tree);
782
783extern tree build_function_call (tree, tree);
784
785extern tree resolve_overloaded_builtin (tree, tree);
786
787extern tree finish_label_address_expr (tree);
788
789/* Same function prototype, but the C and C++ front ends have
790 different implementations. Used in c-common.c. */
791extern tree lookup_label (tree);
792extern tree lookup_name (tree);
793
| 396/* Nonzero means allow Microsoft extensions without warnings or errors. */
397extern int flag_ms_extensions;
398
399/* Nonzero means don't recognize the keyword `asm'. */
400
401extern int flag_no_asm;
402
403/* Nonzero means give string constants the type `const char *', as mandated
404 by the standard. */
405
406extern int flag_const_strings;
407
408/* Nonzero means to treat bitfields as signed unless they say `unsigned'. */
409
410extern int flag_signed_bitfields;
411
412/* Warn about #pragma directives that are not recognized. */
413
414extern int warn_unknown_pragmas; /* Tri state variable. */
415
416/* Warn about format/argument anomalies in calls to formatted I/O functions
417 (*printf, *scanf, strftime, strfmon, etc.). */
418
419extern int warn_format;
420
421
422/* C/ObjC language option variables. */
423
424
425/* Nonzero means allow type mismatches in conditional expressions;
426 just make their values `void'. */
427
428extern int flag_cond_mismatch;
429
430/* Nonzero means enable C89 Amendment 1 features. */
431
432extern int flag_isoc94;
433
434/* Nonzero means use the ISO C99 dialect of C. */
435
436extern int flag_isoc99;
437
438/* Nonzero means that we have builtin functions, and main is an int. */
439
440extern int flag_hosted;
441
442/* Warn if main is suspicious. */
443
444extern int warn_main;
445
446
447/* ObjC language option variables. */
448
449
450/* Open and close the file for outputting class declarations, if
451 requested (ObjC). */
452
453extern int flag_gen_declaration;
454
455/* Tells the compiler that this is a special run. Do not perform any
456 compiling, instead we are to test some platform dependent features
457 and output a C header file with appropriate definitions. */
458
459extern int print_struct_values;
460
461/* ???. Undocumented. */
462
463extern const char *constant_string_class_name;
464
465
466/* C++ language option variables. */
467
468
469/* Nonzero means don't recognize any extension keywords. */
470
471extern int flag_no_gnu_keywords;
472
473/* Nonzero means do emit exported implementations of functions even if
474 they can be inlined. */
475
476extern int flag_implement_inlines;
477
478/* Nonzero means that implicit instantiations will be emitted if needed. */
479
480extern int flag_implicit_templates;
481
482/* Nonzero means that implicit instantiations of inline templates will be
483 emitted if needed, even if instantiations of non-inline templates
484 aren't. */
485
486extern int flag_implicit_inline_templates;
487
488/* Nonzero means generate separate instantiation control files and
489 juggle them at link time. */
490
491extern int flag_use_repository;
492
493/* Nonzero if we want to issue diagnostics that the standard says are not
494 required. */
495
496extern int flag_optional_diags;
497
498/* Nonzero means we should attempt to elide constructors when possible. */
499
500extern int flag_elide_constructors;
501
502/* Nonzero means that member functions defined in class scope are
503 inline by default. */
504
505extern int flag_default_inline;
506
507/* Controls whether compiler generates 'type descriptor' that give
508 run-time type information. */
509
510extern int flag_rtti;
511
512/* Nonzero if we want to conserve space in the .o files. We do this
513 by putting uninitialized data and runtime initialized data into
514 .common instead of .data at the expense of not flagging multiple
515 definitions. */
516
517extern int flag_conserve_space;
518
519/* Nonzero if we want to obey access control semantics. */
520
521extern int flag_access_control;
522
523/* Nonzero if we want to check the return value of new and avoid calling
524 constructors if it is a null pointer. */
525
526extern int flag_check_new;
527
528/* Nonzero if we want the new ISO rules for pushing a new scope for `for'
529 initialization variables.
530 0: Old rules, set by -fno-for-scope.
531 2: New ISO rules, set by -ffor-scope.
532 1: Try to implement new ISO rules, but with backup compatibility
533 (and warnings). This is the default, for now. */
534
535extern int flag_new_for_scope;
536
537/* Nonzero if we want to emit defined symbols with common-like linkage as
538 weak symbols where possible, in order to conform to C++ semantics.
539 Otherwise, emit them as local symbols. */
540
541extern int flag_weak;
542
543/* 0 means we want the preprocessor to not emit line directives for
544 the current working directory. 1 means we want it to do it. -1
545 means we should decide depending on whether debugging information
546 is being emitted or not. */
547
548extern int flag_working_directory;
549
550/* Nonzero to use __cxa_atexit, rather than atexit, to register
551 destructors for local statics and global objects. */
552
553extern int flag_use_cxa_atexit;
554
555/* Nonzero to use __cxa_get_exception_ptr in the C++ exception-handling
556 logic. */
557
558extern int flag_use_cxa_get_exception_ptr;
559
560/* Nonzero means make the default pedwarns warnings instead of errors.
561 The value of this flag is ignored if -pedantic is specified. */
562
563extern int flag_permissive;
564
565/* Nonzero means to implement standard semantics for exception
566 specifications, calling unexpected if an exception is thrown that
567 doesn't match the specification. Zero means to treat them as
568 assertions and optimize accordingly, but not check them. */
569
570extern int flag_enforce_eh_specs;
571
572/* Nonzero (the default) means to generate thread-safe code for
573 initializing local statics. */
574
575extern int flag_threadsafe_statics;
576
577/* Nonzero means warn about implicit declarations. */
578
579extern int warn_implicit;
580
581/* Warn about using __null (as NULL in C++) as sentinel. For code compiled
582 with GCC this doesn't matter as __null is guaranteed to have the right
583 size. */
584
585extern int warn_strict_null_sentinel;
586
587/* Maximum template instantiation depth. This limit is rather
588 arbitrary, but it exists to limit the time it takes to notice
589 infinite template instantiations. */
590
591extern int max_tinst_depth;
592
593/* Nonzero means the expression being parsed will never be evaluated.
594 This is a count, since unevaluated expressions can nest. */
595
596extern int skip_evaluation;
597
598/* C types are partitioned into three subsets: object, function, and
599 incomplete types. */
600#define C_TYPE_OBJECT_P(type) \
601 (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type))
602
603#define C_TYPE_INCOMPLETE_P(type) \
604 (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type) == 0)
605
606#define C_TYPE_FUNCTION_P(type) \
607 (TREE_CODE (type) == FUNCTION_TYPE)
608
609/* For convenience we define a single macro to identify the class of
610 object or incomplete types. */
611#define C_TYPE_OBJECT_OR_INCOMPLETE_P(type) \
612 (!C_TYPE_FUNCTION_P (type))
613
614/* Attribute table common to the C front ends. */
615extern const struct attribute_spec c_common_attribute_table[];
616extern const struct attribute_spec c_common_format_attribute_table[];
617
618/* Pointer to function to lazily generate the VAR_DECL for __FUNCTION__ etc.
619 ID is the identifier to use, NAME is the string.
620 TYPE_DEP indicates whether it depends on type of the function or not
621 (i.e. __PRETTY_FUNCTION__). */
622
623extern tree (*make_fname_decl) (tree, int);
624
625extern tree identifier_global_value (tree);
626extern void record_builtin_type (enum rid, const char *, tree);
627extern tree build_void_list_node (void);
628extern void start_fname_decls (void);
629extern void finish_fname_decls (void);
630extern const char *fname_as_string (int);
631extern tree fname_decl (unsigned, tree);
632
633extern void check_function_arguments (tree, tree, tree);
634extern void check_function_arguments_recurse (void (*)
635 (void *, tree,
636 unsigned HOST_WIDE_INT),
637 void *, tree,
638 unsigned HOST_WIDE_INT);
639extern void check_function_format (tree, tree);
640extern void set_Wformat (int);
641extern tree handle_format_attribute (tree *, tree, tree, int, bool *);
642extern tree handle_format_arg_attribute (tree *, tree, tree, int, bool *);
643extern int c_common_handle_option (size_t code, const char *arg, int value);
644extern bool c_common_missing_argument (const char *opt, size_t code);
645extern tree c_common_type_for_mode (enum machine_mode, int);
646extern tree c_common_type_for_size (unsigned int, int);
647extern tree c_common_unsigned_type (tree);
648extern tree c_common_signed_type (tree);
649extern tree c_common_signed_or_unsigned_type (int, tree);
650extern tree c_build_bitfield_integer_type (unsigned HOST_WIDE_INT, int);
651extern tree c_common_truthvalue_conversion (tree);
652extern void c_apply_type_quals_to_decl (int, tree);
653extern tree c_sizeof_or_alignof_type (tree, bool, int);
654extern tree c_alignof_expr (tree);
655/* Print an error message for invalid operands to arith operation CODE.
656 NOP_EXPR is used as a special case (see truthvalue_conversion). */
657extern void binary_op_error (enum tree_code, tree, tree);
658extern tree fix_string_type (tree);
659struct varray_head_tag;
660extern void constant_expression_warning (tree);
661extern bool strict_aliasing_warning (tree, tree, tree);
662extern void empty_body_warning (tree, tree);
663extern tree convert_and_check (tree, tree);
664extern void overflow_warning (tree);
665extern bool c_determine_visibility (tree);
666extern bool same_scalar_type_ignoring_signedness (tree, tree);
667
668#define c_sizeof(T) c_sizeof_or_alignof_type (T, true, 1)
669#define c_alignof(T) c_sizeof_or_alignof_type (T, false, 1)
670
671/* Subroutine of build_binary_op, used for comparison operations.
672 See if the operands have both been converted from subword integer types
673 and, if so, perhaps change them both back to their original type. */
674extern tree shorten_compare (tree *, tree *, tree *, enum tree_code *);
675
676extern tree pointer_int_sum (enum tree_code, tree, tree);
677extern unsigned int min_precision (tree, int);
678
679/* Add qualifiers to a type, in the fashion for C. */
680extern tree c_build_qualified_type (tree, int);
681
682/* Build tree nodes and builtin functions common to both C and C++ language
683 frontends. */
684extern void c_common_nodes_and_builtins (void);
685
686extern void set_builtin_user_assembler_name (tree decl, const char *asmspec);
687
688extern void disable_builtin_function (const char *);
689
690extern void set_compound_literal_name (tree decl);
691
692extern tree build_va_arg (tree, tree);
693
694extern unsigned int c_common_init_options (unsigned int, const char **);
695extern bool c_common_post_options (const char **);
696extern bool c_common_init (void);
697extern void c_common_finish (void);
698extern void c_common_parse_file (int);
699extern HOST_WIDE_INT c_common_get_alias_set (tree);
700extern void c_register_builtin_type (tree, const char*);
701extern bool c_promoting_integer_type_p (tree);
702extern int self_promoting_args_p (tree);
703extern tree strip_array_types (tree);
704extern tree strip_pointer_operator (tree);
705extern HOST_WIDE_INT c_common_to_target_charset (HOST_WIDE_INT);
706
707/* This is the basic parsing function. */
708extern void c_parse_file (void);
709/* This is misnamed, it actually performs end-of-compilation processing. */
710extern void finish_file (void);
711
712
713/* These macros provide convenient access to the various _STMT nodes. */
714
715/* Nonzero if a given STATEMENT_LIST represents the outermost binding
716 if a statement expression. */
717#define STATEMENT_LIST_STMT_EXPR(NODE) \
718 TREE_LANG_FLAG_1 (STATEMENT_LIST_CHECK (NODE))
719
720/* Nonzero if a label has been added to the statement list. */
721#define STATEMENT_LIST_HAS_LABEL(NODE) \
722 TREE_LANG_FLAG_3 (STATEMENT_LIST_CHECK (NODE))
723
724/* COMPOUND_LITERAL_EXPR accessors. */
725#define COMPOUND_LITERAL_EXPR_DECL_STMT(NODE) \
726 TREE_OPERAND (COMPOUND_LITERAL_EXPR_CHECK (NODE), 0)
727#define COMPOUND_LITERAL_EXPR_DECL(NODE) \
728 DECL_EXPR_DECL (COMPOUND_LITERAL_EXPR_DECL_STMT (NODE))
729
730#define DEFTREECODE(SYM, NAME, TYPE, LENGTH) SYM,
731
732enum c_tree_code {
733 C_DUMMY_TREE_CODE = LAST_AND_UNUSED_TREE_CODE,
734#include "c-common.def"
735 LAST_C_TREE_CODE
736};
737
738#undef DEFTREECODE
739
740extern int anon_aggr_type_p (tree);
741
742/* For a VAR_DECL that is an anonymous union, these are the various
743 sub-variables that make up the anonymous union. */
744#define DECL_ANON_UNION_ELEMS(NODE) DECL_ARGUMENTS ((NODE))
745
746/* In a FIELD_DECL, nonzero if the decl was originally a bitfield. */
747#define DECL_C_BIT_FIELD(NODE) \
748 (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) == 1)
749#define SET_DECL_C_BIT_FIELD(NODE) \
750 (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 1)
751#define CLEAR_DECL_C_BIT_FIELD(NODE) \
752 (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 0)
753
754extern void emit_local_var (tree);
755extern tree do_case (tree, tree);
756extern tree build_stmt (enum tree_code, ...);
757extern tree build_case_label (tree, tree, tree);
758
759/* These functions must be defined by each front-end which implements
760 a variant of the C language. They are used in c-common.c. */
761
762extern tree build_unary_op (enum tree_code, tree, int);
763extern tree build_binary_op (enum tree_code, tree, tree, int);
764extern tree perform_integral_promotions (tree);
765
766/* These functions must be defined by each front-end which implements
767 a variant of the C language. They are used by port files. */
768
769extern tree default_conversion (tree);
770
771/* Given two integer or real types, return the type for their sum.
772 Given two compatible ANSI C types, returns the merged type. */
773
774extern tree common_type (tree, tree);
775
776extern tree decl_constant_value (tree);
777
778/* Handle increment and decrement of boolean types. */
779extern tree boolean_increment (enum tree_code, tree);
780
781extern int case_compare (splay_tree_key, splay_tree_key);
782
783extern tree c_add_case_label (splay_tree, tree, tree, tree, tree);
784
785extern void c_do_switch_warnings (splay_tree, location_t, tree, tree);
786
787extern tree build_function_call (tree, tree);
788
789extern tree resolve_overloaded_builtin (tree, tree);
790
791extern tree finish_label_address_expr (tree);
792
793/* Same function prototype, but the C and C++ front ends have
794 different implementations. Used in c-common.c. */
795extern tree lookup_label (tree);
796extern tree lookup_name (tree);
797
|
795
796extern rtx c_expand_expr (tree, rtx, enum machine_mode, int, rtx *);
797
798extern tree c_staticp (tree);
799
800extern void init_c_lex (void);
801
802extern void c_cpp_builtins (cpp_reader *);
803
804/* Positive if an implicit `extern "C"' scope has just been entered;
805 negative if such a scope has just been exited. */
806extern GTY(()) int pending_lang_change;
807
808/* Information recorded about each file examined during compilation. */
809
810struct c_fileinfo
811{
812 int time; /* Time spent in the file. */
813
814 /* Flags used only by C++.
815 INTERFACE_ONLY nonzero means that we are in an "interface" section
816 of the compiler. INTERFACE_UNKNOWN nonzero means we cannot trust
817 the value of INTERFACE_ONLY. If INTERFACE_UNKNOWN is zero and
818 INTERFACE_ONLY is zero, it means that we are responsible for
819 exporting definitions that others might need. */
820 short interface_only;
821 short interface_unknown;
822};
823
824struct c_fileinfo *get_fileinfo (const char *);
825extern void dump_time_statistics (void);
826
827extern bool c_dump_tree (void *, tree);
828
829extern void c_warn_unused_result (tree *);
830
831extern void verify_sequence_points (tree);
832
833extern tree fold_offsetof (tree, tree);
834
835/* Places where an lvalue, or modifiable lvalue, may be required.
836 Used to select diagnostic messages in lvalue_error and
837 readonly_error. */
838enum lvalue_use {
839 lv_assign,
840 lv_increment,
841 lv_decrement,
842 lv_addressof,
843 lv_asm
844};
845
846extern void lvalue_error (enum lvalue_use);
847
848extern int complete_array_type (tree *, tree, bool);
849
850extern tree builtin_type_for_size (int, bool);
851
852extern void warn_array_subscript_with_type_char (tree);
853extern void warn_about_parentheses (enum tree_code, enum tree_code,
854 enum tree_code);
855
856
857/* In c-gimplify.c */
858extern void c_genericize (tree);
859extern int c_gimplify_expr (tree *, tree *, tree *);
860extern tree c_build_bind_expr (tree, tree);
861
862/* In c-pch.c */
863extern void pch_init (void);
864extern int c_common_valid_pch (cpp_reader *pfile, const char *name, int fd);
865extern void c_common_read_pch (cpp_reader *pfile, const char *name, int fd,
866 const char *orig);
867extern void c_common_write_pch (void);
868extern void c_common_no_more_pch (void);
869extern void c_common_pch_pragma (cpp_reader *pfile, const char *);
870extern void c_common_print_pch_checksum (FILE *f);
871
872/* In *-checksum.c */
873extern const unsigned char executable_checksum[16];
874
875extern void builtin_define_with_value (const char *, const char *, int);
876extern void c_stddef_cpp_builtins (void);
877extern void fe_file_change (const struct line_map *);
878extern void c_parse_error (const char *, enum cpp_ttype, tree);
879
880/* Objective-C / Objective-C++ entry points. */
881
882/* The following ObjC/ObjC++ functions are called by the C and/or C++
883 front-ends; they all must have corresponding stubs in stub-objc.c. */
884extern tree objc_is_class_name (tree);
885extern tree objc_is_object_ptr (tree);
886extern void objc_check_decl (tree);
887extern int objc_is_reserved_word (tree);
888extern bool objc_compare_types (tree, tree, int, tree);
889extern void objc_volatilize_decl (tree);
890extern bool objc_type_quals_match (tree, tree);
891extern tree objc_rewrite_function_call (tree, tree);
892extern tree objc_message_selector (void);
893extern tree objc_lookup_ivar (tree, tree);
894extern void objc_clear_super_receiver (void);
895extern int objc_is_public (tree, tree);
896extern tree objc_is_id (tree);
897extern void objc_declare_alias (tree, tree);
898extern void objc_declare_class (tree);
899extern void objc_declare_protocols (tree);
900extern tree objc_build_message_expr (tree);
901extern tree objc_finish_message_expr (tree, tree, tree);
902extern tree objc_build_selector_expr (tree);
903extern tree objc_build_protocol_expr (tree);
904extern tree objc_build_encode_expr (tree);
905extern tree objc_build_string_object (tree);
906extern tree objc_get_protocol_qualified_type (tree, tree);
907extern tree objc_get_class_reference (tree);
908extern tree objc_get_class_ivars (tree);
909extern void objc_start_class_interface (tree, tree, tree);
910extern void objc_start_category_interface (tree, tree, tree);
911extern void objc_start_protocol (tree, tree);
912extern void objc_continue_interface (void);
913extern void objc_finish_interface (void);
914extern void objc_start_class_implementation (tree, tree);
915extern void objc_start_category_implementation (tree, tree);
916extern void objc_continue_implementation (void);
917extern void objc_finish_implementation (void);
918extern void objc_set_visibility (int);
919extern void objc_set_method_type (enum tree_code);
920extern tree objc_build_method_signature (tree, tree, tree, bool);
921extern void objc_add_method_declaration (tree);
922extern void objc_start_method_definition (tree);
923extern void objc_finish_method_definition (tree);
924extern void objc_add_instance_variable (tree);
925extern tree objc_build_keyword_decl (tree, tree, tree);
926extern tree objc_build_throw_stmt (tree);
927extern void objc_begin_try_stmt (location_t, tree);
928extern tree objc_finish_try_stmt (void);
929extern void objc_begin_catch_clause (tree);
930extern void objc_finish_catch_clause (void);
931extern void objc_build_finally_clause (location_t, tree);
932extern tree objc_build_synchronized (location_t, tree, tree);
933extern int objc_static_init_needed_p (void);
934extern tree objc_generate_static_init_call (tree);
935extern tree objc_generate_write_barrier (tree, enum tree_code, tree);
936
937/* The following are provided by the C and C++ front-ends, and called by
938 ObjC/ObjC++. */
939extern void *objc_get_current_scope (void);
940extern void objc_mark_locals_volatile (void *);
941
942/* In c-ppoutput.c */
943extern void init_pp_output (FILE *);
944extern void preprocess_file (cpp_reader *);
945extern void pp_file_change (const struct line_map *);
946extern void pp_dir_change (cpp_reader *, const char *);
947extern bool check_missing_format_attribute (tree, tree);
948
949/* In c-omp.c */
950extern tree c_finish_omp_master (tree);
951extern tree c_finish_omp_critical (tree, tree);
952extern tree c_finish_omp_ordered (tree);
953extern void c_finish_omp_barrier (void);
954extern tree c_finish_omp_atomic (enum tree_code, tree, tree);
955extern void c_finish_omp_flush (void);
956extern tree c_finish_omp_for (location_t, tree, tree, tree, tree, tree, tree);
957extern void c_split_parallel_clauses (tree, tree *, tree *);
958extern enum omp_clause_default_kind c_omp_predetermined_sharing (tree);
959
960/* Not in c-omp.c; provided by the front end. */
961extern bool c_omp_sharing_predetermined (tree);
962extern tree c_omp_remap_decl (tree, bool);
963
964/* In order for the format checking to accept the C frontend
965 diagnostic framework extensions, you must include this file before
966 toplev.h, not after. The C front end formats are a subset of those
967 for C++, so they are the appropriate set to use in common code;
968 cp-tree.h overrides this for C++. */
969#ifndef GCC_DIAG_STYLE
970#define GCC_DIAG_STYLE __gcc_cdiag__
971#endif
972
973#endif /* ! GCC_C_COMMON_H */
| 799
800extern rtx c_expand_expr (tree, rtx, enum machine_mode, int, rtx *);
801
802extern tree c_staticp (tree);
803
804extern void init_c_lex (void);
805
806extern void c_cpp_builtins (cpp_reader *);
807
808/* Positive if an implicit `extern "C"' scope has just been entered;
809 negative if such a scope has just been exited. */
810extern GTY(()) int pending_lang_change;
811
812/* Information recorded about each file examined during compilation. */
813
814struct c_fileinfo
815{
816 int time; /* Time spent in the file. */
817
818 /* Flags used only by C++.
819 INTERFACE_ONLY nonzero means that we are in an "interface" section
820 of the compiler. INTERFACE_UNKNOWN nonzero means we cannot trust
821 the value of INTERFACE_ONLY. If INTERFACE_UNKNOWN is zero and
822 INTERFACE_ONLY is zero, it means that we are responsible for
823 exporting definitions that others might need. */
824 short interface_only;
825 short interface_unknown;
826};
827
828struct c_fileinfo *get_fileinfo (const char *);
829extern void dump_time_statistics (void);
830
831extern bool c_dump_tree (void *, tree);
832
833extern void c_warn_unused_result (tree *);
834
835extern void verify_sequence_points (tree);
836
837extern tree fold_offsetof (tree, tree);
838
839/* Places where an lvalue, or modifiable lvalue, may be required.
840 Used to select diagnostic messages in lvalue_error and
841 readonly_error. */
842enum lvalue_use {
843 lv_assign,
844 lv_increment,
845 lv_decrement,
846 lv_addressof,
847 lv_asm
848};
849
850extern void lvalue_error (enum lvalue_use);
851
852extern int complete_array_type (tree *, tree, bool);
853
854extern tree builtin_type_for_size (int, bool);
855
856extern void warn_array_subscript_with_type_char (tree);
857extern void warn_about_parentheses (enum tree_code, enum tree_code,
858 enum tree_code);
859
860
861/* In c-gimplify.c */
862extern void c_genericize (tree);
863extern int c_gimplify_expr (tree *, tree *, tree *);
864extern tree c_build_bind_expr (tree, tree);
865
866/* In c-pch.c */
867extern void pch_init (void);
868extern int c_common_valid_pch (cpp_reader *pfile, const char *name, int fd);
869extern void c_common_read_pch (cpp_reader *pfile, const char *name, int fd,
870 const char *orig);
871extern void c_common_write_pch (void);
872extern void c_common_no_more_pch (void);
873extern void c_common_pch_pragma (cpp_reader *pfile, const char *);
874extern void c_common_print_pch_checksum (FILE *f);
875
876/* In *-checksum.c */
877extern const unsigned char executable_checksum[16];
878
879extern void builtin_define_with_value (const char *, const char *, int);
880extern void c_stddef_cpp_builtins (void);
881extern void fe_file_change (const struct line_map *);
882extern void c_parse_error (const char *, enum cpp_ttype, tree);
883
884/* Objective-C / Objective-C++ entry points. */
885
886/* The following ObjC/ObjC++ functions are called by the C and/or C++
887 front-ends; they all must have corresponding stubs in stub-objc.c. */
888extern tree objc_is_class_name (tree);
889extern tree objc_is_object_ptr (tree);
890extern void objc_check_decl (tree);
891extern int objc_is_reserved_word (tree);
892extern bool objc_compare_types (tree, tree, int, tree);
893extern void objc_volatilize_decl (tree);
894extern bool objc_type_quals_match (tree, tree);
895extern tree objc_rewrite_function_call (tree, tree);
896extern tree objc_message_selector (void);
897extern tree objc_lookup_ivar (tree, tree);
898extern void objc_clear_super_receiver (void);
899extern int objc_is_public (tree, tree);
900extern tree objc_is_id (tree);
901extern void objc_declare_alias (tree, tree);
902extern void objc_declare_class (tree);
903extern void objc_declare_protocols (tree);
904extern tree objc_build_message_expr (tree);
905extern tree objc_finish_message_expr (tree, tree, tree);
906extern tree objc_build_selector_expr (tree);
907extern tree objc_build_protocol_expr (tree);
908extern tree objc_build_encode_expr (tree);
909extern tree objc_build_string_object (tree);
910extern tree objc_get_protocol_qualified_type (tree, tree);
911extern tree objc_get_class_reference (tree);
912extern tree objc_get_class_ivars (tree);
913extern void objc_start_class_interface (tree, tree, tree);
914extern void objc_start_category_interface (tree, tree, tree);
915extern void objc_start_protocol (tree, tree);
916extern void objc_continue_interface (void);
917extern void objc_finish_interface (void);
918extern void objc_start_class_implementation (tree, tree);
919extern void objc_start_category_implementation (tree, tree);
920extern void objc_continue_implementation (void);
921extern void objc_finish_implementation (void);
922extern void objc_set_visibility (int);
923extern void objc_set_method_type (enum tree_code);
924extern tree objc_build_method_signature (tree, tree, tree, bool);
925extern void objc_add_method_declaration (tree);
926extern void objc_start_method_definition (tree);
927extern void objc_finish_method_definition (tree);
928extern void objc_add_instance_variable (tree);
929extern tree objc_build_keyword_decl (tree, tree, tree);
930extern tree objc_build_throw_stmt (tree);
931extern void objc_begin_try_stmt (location_t, tree);
932extern tree objc_finish_try_stmt (void);
933extern void objc_begin_catch_clause (tree);
934extern void objc_finish_catch_clause (void);
935extern void objc_build_finally_clause (location_t, tree);
936extern tree objc_build_synchronized (location_t, tree, tree);
937extern int objc_static_init_needed_p (void);
938extern tree objc_generate_static_init_call (tree);
939extern tree objc_generate_write_barrier (tree, enum tree_code, tree);
940
941/* The following are provided by the C and C++ front-ends, and called by
942 ObjC/ObjC++. */
943extern void *objc_get_current_scope (void);
944extern void objc_mark_locals_volatile (void *);
945
946/* In c-ppoutput.c */
947extern void init_pp_output (FILE *);
948extern void preprocess_file (cpp_reader *);
949extern void pp_file_change (const struct line_map *);
950extern void pp_dir_change (cpp_reader *, const char *);
951extern bool check_missing_format_attribute (tree, tree);
952
953/* In c-omp.c */
954extern tree c_finish_omp_master (tree);
955extern tree c_finish_omp_critical (tree, tree);
956extern tree c_finish_omp_ordered (tree);
957extern void c_finish_omp_barrier (void);
958extern tree c_finish_omp_atomic (enum tree_code, tree, tree);
959extern void c_finish_omp_flush (void);
960extern tree c_finish_omp_for (location_t, tree, tree, tree, tree, tree, tree);
961extern void c_split_parallel_clauses (tree, tree *, tree *);
962extern enum omp_clause_default_kind c_omp_predetermined_sharing (tree);
963
964/* Not in c-omp.c; provided by the front end. */
965extern bool c_omp_sharing_predetermined (tree);
966extern tree c_omp_remap_decl (tree, bool);
967
968/* In order for the format checking to accept the C frontend
969 diagnostic framework extensions, you must include this file before
970 toplev.h, not after. The C front end formats are a subset of those
971 for C++, so they are the appropriate set to use in common code;
972 cp-tree.h overrides this for C++. */
973#ifndef GCC_DIAG_STYLE
974#define GCC_DIAG_STYLE __gcc_cdiag__
975#endif
976
977#endif /* ! GCC_C_COMMON_H */
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