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c-tree.h (132727) c-tree.h (169699)
1/* Definitions for C parsing and type checking.
2 Copyright (C) 1987, 1993, 1994, 1995, 1997, 1998,
1/* Definitions for C parsing and type checking.
2 Copyright (C) 1987, 1993, 1994, 1995, 1997, 1998,
3 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
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
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, 59 Temple Place - Suite 330, Boston, MA
2002111-1307, USA. */
19Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
2002110-1301, USA. */
21
22#ifndef GCC_C_TREE_H
23#define GCC_C_TREE_H
24
25#include "c-common.h"
21
22#ifndef GCC_C_TREE_H
23#define GCC_C_TREE_H
24
25#include "c-common.h"
26#include "toplev.h"
27#include "diagnostic.h"
26
28
27/* Language-dependent contents of an identifier. */
29/* struct lang_identifier is private to c-decl.c, but langhooks.c needs to
30 know how big it is. This is sanity-checked in c-decl.c. */
31#define C_SIZEOF_STRUCT_LANG_IDENTIFIER \
32 (sizeof (struct c_common_identifier) + 3 * sizeof (void *))
28
33
29/* The limbo_value is used for block level extern declarations, which need
30 to be type checked against subsequent extern declarations. They can't
31 be referenced after they fall out of scope, so they can't be global.
32
33 The rid_code field is used for keywords. It is in all
34 lang_identifier nodes, because some keywords are only special in a
35 particular context. */
36
37struct lang_identifier GTY(())
38{
39 struct c_common_identifier common_id;
40 tree symbol_value;
41 tree tag_value;
42 tree label_value;
43};
44
45/* The resulting tree type. */
46
47union lang_tree_node
48 GTY((desc ("TREE_CODE (&%h.generic) == IDENTIFIER_NODE"),
49 chain_next ("TREE_CODE (&%h.generic) == INTEGER_TYPE ? (union lang_tree_node *)TYPE_NEXT_VARIANT (&%h.generic) : (union lang_tree_node *)TREE_CHAIN (&%h.generic)")))
50{
51 union tree_node GTY ((tag ("0"),
52 desc ("tree_node_structure (&%h)")))
53 generic;
54 struct lang_identifier GTY ((tag ("1"))) identifier;
55};
56
57/* Language-specific declaration information. */
58
59struct lang_decl GTY(())
60{
34/* Language-specific declaration information. */
35
36struct lang_decl GTY(())
37{
61 /* The return types and parameter types may have variable size.
62 This is a list of any SAVE_EXPRs that need to be evaluated to
63 compute those sizes. */
64 tree pending_sizes;
38 char dummy;
65};
66
39};
40
67/* Macros for access to language-specific slots in an identifier. */
68/* Each of these slots contains a DECL node or null. */
69
70/* The value of the identifier in the namespace of "ordinary identifiers"
71 (data objects, enum constants, functions, typedefs). */
72#define IDENTIFIER_SYMBOL_VALUE(NODE) \
73 (((struct lang_identifier *) (NODE))->symbol_value)
74/* The value of the identifier in the namespace of struct, union,
75 and enum tags. */
76#define IDENTIFIER_TAG_VALUE(NODE) \
77 (((struct lang_identifier *) (NODE))->tag_value)
78/* The value of the identifier in the namespace of labels. */
79#define IDENTIFIER_LABEL_VALUE(NODE) \
80 (((struct lang_identifier *) (NODE))->label_value)
81
82/* In identifiers, C uses the following fields in a special way:
83 TREE_PUBLIC to record that there was a previous local extern decl.
84 TREE_USED to record that such a decl was used.
85 TREE_ADDRESSABLE to record that the address of such a decl was used. */
86
87/* In a RECORD_TYPE or UNION_TYPE, nonzero if any component is read-only. */
88#define C_TYPE_FIELDS_READONLY(TYPE) TREE_LANG_FLAG_1 (TYPE)
89
90/* In a RECORD_TYPE or UNION_TYPE, nonzero if any component is volatile. */
91#define C_TYPE_FIELDS_VOLATILE(TYPE) TREE_LANG_FLAG_2 (TYPE)
92
93/* In a RECORD_TYPE or UNION_TYPE or ENUMERAL_TYPE
94 nonzero if the definition of the type has already started. */
95#define C_TYPE_BEING_DEFINED(TYPE) TYPE_LANG_FLAG_0 (TYPE)
96
97/* In an incomplete RECORD_TYPE or UNION_TYPE, a list of variable
98 declarations whose type would be completed by completing that type. */
99#define C_TYPE_INCOMPLETE_VARS(TYPE) TYPE_VFIELD (TYPE)
100
101/* In an IDENTIFIER_NODE, nonzero if this identifier is actually a
102 keyword. C_RID_CODE (node) is then the RID_* value of the keyword,
103 and C_RID_YYCODE is the token number wanted by Yacc. */
104#define C_IS_RESERVED_WORD(ID) TREE_LANG_FLAG_0 (ID)
105
41/* In a RECORD_TYPE or UNION_TYPE, nonzero if any component is read-only. */
42#define C_TYPE_FIELDS_READONLY(TYPE) TREE_LANG_FLAG_1 (TYPE)
43
44/* In a RECORD_TYPE or UNION_TYPE, nonzero if any component is volatile. */
45#define C_TYPE_FIELDS_VOLATILE(TYPE) TREE_LANG_FLAG_2 (TYPE)
46
47/* In a RECORD_TYPE or UNION_TYPE or ENUMERAL_TYPE
48 nonzero if the definition of the type has already started. */
49#define C_TYPE_BEING_DEFINED(TYPE) TYPE_LANG_FLAG_0 (TYPE)
50
51/* In an incomplete RECORD_TYPE or UNION_TYPE, a list of variable
52 declarations whose type would be completed by completing that type. */
53#define C_TYPE_INCOMPLETE_VARS(TYPE) TYPE_VFIELD (TYPE)
54
55/* In an IDENTIFIER_NODE, nonzero if this identifier is actually a
56 keyword. C_RID_CODE (node) is then the RID_* value of the keyword,
57 and C_RID_YYCODE is the token number wanted by Yacc. */
58#define C_IS_RESERVED_WORD(ID) TREE_LANG_FLAG_0 (ID)
59
106/* In a RECORD_TYPE, a sorted array of the fields of the type. */
107struct lang_type GTY(())
108{
60struct lang_type GTY(())
61{
62 /* In a RECORD_TYPE, a sorted array of the fields of the type. */
109 struct sorted_fields_type * GTY ((reorder ("resort_sorted_fields"))) s;
63 struct sorted_fields_type * GTY ((reorder ("resort_sorted_fields"))) s;
64 /* In an ENUMERAL_TYPE, the min and max values. */
65 tree enum_min;
66 tree enum_max;
67 /* In a RECORD_TYPE, information specific to Objective-C, such
68 as a list of adopted protocols or a pointer to a corresponding
69 @interface. See objc/objc-act.h for details. */
70 tree objc_info;
110};
111
112/* Record whether a type or decl was written with nonconstant size.
113 Note that TYPE_SIZE may have simplified to a constant. */
114#define C_TYPE_VARIABLE_SIZE(TYPE) TYPE_LANG_FLAG_1 (TYPE)
115#define C_DECL_VARIABLE_SIZE(TYPE) DECL_LANG_FLAG_0 (TYPE)
116
71};
72
73/* Record whether a type or decl was written with nonconstant size.
74 Note that TYPE_SIZE may have simplified to a constant. */
75#define C_TYPE_VARIABLE_SIZE(TYPE) TYPE_LANG_FLAG_1 (TYPE)
76#define C_DECL_VARIABLE_SIZE(TYPE) DECL_LANG_FLAG_0 (TYPE)
77
117/* Store a value in that field. */
118#define C_SET_EXP_ORIGINAL_CODE(EXP, CODE) \
119 (TREE_COMPLEXITY (EXP) = (int) (CODE))
120
121/* Record whether a typedef for type `int' was actually `signed int'. */
122#define C_TYPEDEF_EXPLICITLY_SIGNED(EXP) DECL_LANG_FLAG_1 (EXP)
123
124/* For a FUNCTION_DECL, nonzero if it was defined without an explicit
125 return type. */
126#define C_FUNCTION_IMPLICIT_INT(EXP) DECL_LANG_FLAG_1 (EXP)
127
128/* For a FUNCTION_DECL, nonzero if it was an implicit declaration. */
129#define C_DECL_IMPLICIT(EXP) DECL_LANG_FLAG_2 (EXP)
130
78/* Record whether a typedef for type `int' was actually `signed int'. */
79#define C_TYPEDEF_EXPLICITLY_SIGNED(EXP) DECL_LANG_FLAG_1 (EXP)
80
81/* For a FUNCTION_DECL, nonzero if it was defined without an explicit
82 return type. */
83#define C_FUNCTION_IMPLICIT_INT(EXP) DECL_LANG_FLAG_1 (EXP)
84
85/* For a FUNCTION_DECL, nonzero if it was an implicit declaration. */
86#define C_DECL_IMPLICIT(EXP) DECL_LANG_FLAG_2 (EXP)
87
131/* Nonzero for a declaration of an external object which is not
132 currently in scope. This is either a built-in declaration of
133 a library function, before a real declaration has been seen,
134 or a declaration that appeared in an inner scope that has ended. */
135#define C_DECL_INVISIBLE(EXP) DECL_LANG_FLAG_3 (EXP)
88/* For FUNCTION_DECLs, evaluates true if the decl is built-in but has
89 been declared. */
90#define C_DECL_DECLARED_BUILTIN(EXP) \
91 DECL_LANG_FLAG_3 (FUNCTION_DECL_CHECK (EXP))
136
92
93/* For FUNCTION_DECLs, evaluates true if the decl is built-in, has a
94 built-in prototype and does not have a non-built-in prototype. */
95#define C_DECL_BUILTIN_PROTOTYPE(EXP) \
96 DECL_LANG_FLAG_6 (FUNCTION_DECL_CHECK (EXP))
97
98/* Record whether a decl was declared register. This is strictly a
99 front-end flag, whereas DECL_REGISTER is used for code generation;
100 they may differ for structures with volatile fields. */
101#define C_DECL_REGISTER(EXP) DECL_LANG_FLAG_4 (EXP)
102
103/* Record whether a decl was used in an expression anywhere except an
104 unevaluated operand of sizeof / typeof / alignof. This is only
105 used for functions declared static but not defined, though outside
106 sizeof and typeof it is set for other function decls as well. */
107#define C_DECL_USED(EXP) DECL_LANG_FLAG_5 (FUNCTION_DECL_CHECK (EXP))
108
109/* Record whether a label was defined in a statement expression which
110 has finished and so can no longer be jumped to. */
111#define C_DECL_UNJUMPABLE_STMT_EXPR(EXP) \
112 DECL_LANG_FLAG_6 (LABEL_DECL_CHECK (EXP))
113
114/* Record whether a label was the subject of a goto from outside the
115 current level of statement expression nesting and so cannot be
116 defined right now. */
117#define C_DECL_UNDEFINABLE_STMT_EXPR(EXP) \
118 DECL_LANG_FLAG_7 (LABEL_DECL_CHECK (EXP))
119
120/* Record whether a label was defined in the scope of an identifier
121 with variably modified type which has finished and so can no longer
122 be jumped to. */
123#define C_DECL_UNJUMPABLE_VM(EXP) \
124 DECL_LANG_FLAG_3 (LABEL_DECL_CHECK (EXP))
125
126/* Record whether a label was the subject of a goto from outside the
127 current level of scopes of identifiers with variably modified type
128 and so cannot be defined right now. */
129#define C_DECL_UNDEFINABLE_VM(EXP) \
130 DECL_LANG_FLAG_5 (LABEL_DECL_CHECK (EXP))
131
132/* Record whether a variable has been declared threadprivate by
133 #pragma omp threadprivate. */
134#define C_DECL_THREADPRIVATE_P(DECL) DECL_LANG_FLAG_3 (VAR_DECL_CHECK (DECL))
135
137/* Nonzero for a decl which either doesn't exist or isn't a prototype.
138 N.B. Could be simplified if all built-in decls had complete prototypes
139 (but this is presently difficult because some of them need FILE*). */
140#define C_DECL_ISNT_PROTOTYPE(EXP) \
141 (EXP == 0 \
142 || (TYPE_ARG_TYPES (TREE_TYPE (EXP)) == 0 \
143 && !DECL_BUILT_IN (EXP)))
144
145/* For FUNCTION_TYPE, a hidden list of types of arguments. The same as
146 TYPE_ARG_TYPES for functions with prototypes, but created for functions
147 without prototypes. */
136/* Nonzero for a decl which either doesn't exist or isn't a prototype.
137 N.B. Could be simplified if all built-in decls had complete prototypes
138 (but this is presently difficult because some of them need FILE*). */
139#define C_DECL_ISNT_PROTOTYPE(EXP) \
140 (EXP == 0 \
141 || (TYPE_ARG_TYPES (TREE_TYPE (EXP)) == 0 \
142 && !DECL_BUILT_IN (EXP)))
143
144/* For FUNCTION_TYPE, a hidden list of types of arguments. The same as
145 TYPE_ARG_TYPES for functions with prototypes, but created for functions
146 without prototypes. */
148#define TYPE_ACTUAL_ARG_TYPES(NODE) TYPE_BINFO (NODE)
147#define TYPE_ACTUAL_ARG_TYPES(NODE) TYPE_LANG_SLOT_1 (NODE)
149
148
150/* Values for the first parameter to poplevel. */
151#define KEEP_NO 0
152#define KEEP_YES 1
153#define KEEP_MAYBE 2
149/* Record parser information about an expression that is irrelevant
150 for code generation alongside a tree representing its value. */
151struct c_expr
152{
153 /* The value of the expression. */
154 tree value;
155 /* Record the original binary operator of an expression, which may
156 have been changed by fold, STRING_CST for unparenthesized string
157 constants, or ERROR_MARK for other expressions (including
158 parenthesized expressions). */
159 enum tree_code original_code;
160};
154
161
162/* A kind of type specifier. Note that this information is currently
163 only used to distinguish tag definitions, tag references and typeof
164 uses. */
165enum c_typespec_kind {
166 /* A reserved keyword type specifier. */
167 ctsk_resword,
168 /* A reference to a tag, previously declared, such as "struct foo".
169 This includes where the previous declaration was as a different
170 kind of tag, in which case this is only valid if shadowing that
171 tag in an inner scope. */
172 ctsk_tagref,
173 /* A reference to a tag, not previously declared in a visible
174 scope. */
175 ctsk_tagfirstref,
176 /* A definition of a tag such as "struct foo { int a; }". */
177 ctsk_tagdef,
178 /* A typedef name. */
179 ctsk_typedef,
180 /* An ObjC-specific kind of type specifier. */
181 ctsk_objc,
182 /* A typeof specifier. */
183 ctsk_typeof
184};
185
186/* A type specifier: this structure is created in the parser and
187 passed to declspecs_add_type only. */
188struct c_typespec {
189 /* What kind of type specifier this is. */
190 enum c_typespec_kind kind;
191 /* The specifier itself. */
192 tree spec;
193};
194
195/* A storage class specifier. */
196enum c_storage_class {
197 csc_none,
198 csc_auto,
199 csc_extern,
200 csc_register,
201 csc_static,
202 csc_typedef
203};
204
205/* A type specifier keyword "void", "_Bool", "char", "int", "float",
206 "double", or none of these. */
207enum c_typespec_keyword {
208 cts_none,
209 cts_void,
210 cts_bool,
211 cts_char,
212 cts_int,
213 cts_float,
214 cts_double,
215 cts_dfloat32,
216 cts_dfloat64,
217 cts_dfloat128
218};
219
220/* A sequence of declaration specifiers in C. */
221struct c_declspecs {
222 /* The type specified, if a single type specifier such as a struct,
223 union or enum specifier, typedef name or typeof specifies the
224 whole type, or NULL_TREE if none or a keyword such as "void" or
225 "char" is used. Does not include qualifiers. */
226 tree type;
227 /* The attributes from a typedef decl. */
228 tree decl_attr;
229 /* When parsing, the attributes. Outside the parser, this will be
230 NULL; attributes (possibly from multiple lists) will be passed
231 separately. */
232 tree attrs;
233 /* Any type specifier keyword used such as "int", not reflecting
234 modifiers such as "short", or cts_none if none. */
235 enum c_typespec_keyword typespec_word;
236 /* The storage class specifier, or csc_none if none. */
237 enum c_storage_class storage_class;
238 /* Whether any declaration specifiers have been seen at all. */
239 BOOL_BITFIELD declspecs_seen_p : 1;
240 /* Whether a type specifier has been seen. */
241 BOOL_BITFIELD type_seen_p : 1;
242 /* Whether something other than a storage class specifier or
243 attribute has been seen. This is used to warn for the
244 obsolescent usage of storage class specifiers other than at the
245 start of the list. (Doing this properly would require function
246 specifiers to be handled separately from storage class
247 specifiers.) */
248 BOOL_BITFIELD non_sc_seen_p : 1;
249 /* Whether the type is specified by a typedef or typeof name. */
250 BOOL_BITFIELD typedef_p : 1;
251 /* Whether a struct, union or enum type either had its content
252 defined by a type specifier in the list or was the first visible
253 declaration of its tag. */
254 BOOL_BITFIELD tag_defined_p : 1;
255 /* Whether the type is explicitly "signed" or specified by a typedef
256 whose type is explicitly "signed". */
257 BOOL_BITFIELD explicit_signed_p : 1;
258 /* Whether the specifiers include a deprecated typedef. */
259 BOOL_BITFIELD deprecated_p : 1;
260 /* Whether the type defaulted to "int" because there were no type
261 specifiers. */
262 BOOL_BITFIELD default_int_p;
263 /* Whether "long" was specified. */
264 BOOL_BITFIELD long_p : 1;
265 /* Whether "long" was specified more than once. */
266 BOOL_BITFIELD long_long_p : 1;
267 /* Whether "short" was specified. */
268 BOOL_BITFIELD short_p : 1;
269 /* Whether "signed" was specified. */
270 BOOL_BITFIELD signed_p : 1;
271 /* Whether "unsigned" was specified. */
272 BOOL_BITFIELD unsigned_p : 1;
273 /* Whether "complex" was specified. */
274 BOOL_BITFIELD complex_p : 1;
275 /* Whether "inline" was specified. */
276 BOOL_BITFIELD inline_p : 1;
277 /* Whether "__thread" was specified. */
278 BOOL_BITFIELD thread_p : 1;
279 /* Whether "const" was specified. */
280 BOOL_BITFIELD const_p : 1;
281 /* Whether "volatile" was specified. */
282 BOOL_BITFIELD volatile_p : 1;
283 /* Whether "restrict" was specified. */
284 BOOL_BITFIELD restrict_p : 1;
285};
286
287/* The various kinds of declarators in C. */
288enum c_declarator_kind {
289 /* An identifier. */
290 cdk_id,
291 /* A function. */
292 cdk_function,
293 /* An array. */
294 cdk_array,
295 /* A pointer. */
296 cdk_pointer,
297 /* Parenthesized declarator with nested attributes. */
298 cdk_attrs
299};
300
301/* Information about the parameters in a function declarator. */
302struct c_arg_info {
303 /* A list of parameter decls. */
304 tree parms;
305 /* A list of structure, union and enum tags defined. */
306 tree tags;
307 /* A list of argument types to go in the FUNCTION_TYPE. */
308 tree types;
309 /* A list of non-parameter decls (notably enumeration constants)
310 defined with the parameters. */
311 tree others;
312 /* A list of VLA sizes from the parameters. In a function
313 definition, these are used to ensure that side-effects in sizes
314 of arrays converted to pointers (such as a parameter int i[n++])
315 take place; otherwise, they are ignored. */
316 tree pending_sizes;
317 /* True when these arguments had [*]. */
318 BOOL_BITFIELD had_vla_unspec : 1;
319};
320
321/* A declarator. */
322struct c_declarator {
323 /* The kind of declarator. */
324 enum c_declarator_kind kind;
325 /* Except for cdk_id, the contained declarator. For cdk_id, NULL. */
326 struct c_declarator *declarator;
327 location_t id_loc; /* Currently only set for cdk_id. */
328 union {
329 /* For identifiers, an IDENTIFIER_NODE or NULL_TREE if an abstract
330 declarator. */
331 tree id;
332 /* For functions. */
333 struct c_arg_info *arg_info;
334 /* For arrays. */
335 struct {
336 /* The array dimension, or NULL for [] and [*]. */
337 tree dimen;
338 /* The qualifiers inside []. */
339 int quals;
340 /* The attributes (currently ignored) inside []. */
341 tree attrs;
342 /* Whether [static] was used. */
343 BOOL_BITFIELD static_p : 1;
344 /* Whether [*] was used. */
345 BOOL_BITFIELD vla_unspec_p : 1;
346 } array;
347 /* For pointers, the qualifiers on the pointer type. */
348 int pointer_quals;
349 /* For attributes. */
350 tree attrs;
351 } u;
352};
353
354/* A type name. */
355struct c_type_name {
356 /* The declaration specifiers. */
357 struct c_declspecs *specs;
358 /* The declarator. */
359 struct c_declarator *declarator;
360};
361
362/* A parameter. */
363struct c_parm {
364 /* The declaration specifiers, minus any prefix attributes. */
365 struct c_declspecs *specs;
366 /* The attributes. */
367 tree attrs;
368 /* The declarator. */
369 struct c_declarator *declarator;
370};
371
155/* Save and restore the variables in this file and elsewhere
156 that keep track of the progress of compilation of the current function.
157 Used for nested functions. */
158
159struct language_function GTY(())
160{
161 struct c_language_function base;
372/* Save and restore the variables in this file and elsewhere
373 that keep track of the progress of compilation of the current function.
374 Used for nested functions. */
375
376struct language_function GTY(())
377{
378 struct c_language_function base;
379 tree x_break_label;
380 tree x_cont_label;
381 struct c_switch * GTY((skip)) x_switch_stack;
382 struct c_arg_info * GTY((skip)) arg_info;
162 int returns_value;
163 int returns_null;
164 int returns_abnormally;
165 int warn_about_return_type;
166 int extern_inline;
383 int returns_value;
384 int returns_null;
385 int returns_abnormally;
386 int warn_about_return_type;
387 int extern_inline;
167 int x_in_iteration_stmt;
168 int x_in_case_stmt;
169};
170
388};
389
390/* Save lists of labels used or defined in particular contexts.
391 Allocated on the parser obstack. */
392
393struct c_label_list
394{
395 /* The label at the head of the list. */
396 tree label;
397 /* The rest of the list. */
398 struct c_label_list *next;
399};
400
401/* Statement expression context. */
402
403struct c_label_context_se
404{
405 /* The labels defined at this level of nesting. */
406 struct c_label_list *labels_def;
407 /* The labels used at this level of nesting. */
408 struct c_label_list *labels_used;
409 /* The next outermost context. */
410 struct c_label_context_se *next;
411};
412
413/* Context of variably modified declarations. */
414
415struct c_label_context_vm
416{
417 /* The labels defined at this level of nesting. */
418 struct c_label_list *labels_def;
419 /* The labels used at this level of nesting. */
420 struct c_label_list *labels_used;
421 /* The scope of this context. Multiple contexts may be at the same
422 numbered scope, since each variably modified declaration starts a
423 new context. */
424 unsigned scope;
425 /* The next outermost context. */
426 struct c_label_context_vm *next;
427};
428
171
429
172/* in c-parse.in */
430/* in c-parser.c */
173extern void c_parse_init (void);
174
175/* in c-aux-info.c */
176extern void gen_aux_info_record (tree, int, int, int);
177
178/* in c-decl.c */
431extern void c_parse_init (void);
432
433/* in c-aux-info.c */
434extern void gen_aux_info_record (tree, int, int, int);
435
436/* in c-decl.c */
179extern int c_in_iteration_stmt;
180extern int c_in_case_stmt;
437extern struct obstack parser_obstack;
438extern tree c_break_label;
439extern tree c_cont_label;
181
182extern int global_bindings_p (void);
440
441extern int global_bindings_p (void);
183extern tree getdecls (void);
184extern void pushlevel (int);
442extern void push_scope (void);
443extern tree pop_scope (void);
185extern void insert_block (tree);
444extern void insert_block (tree);
186extern void set_block (tree);
187extern tree pushdecl (tree);
188extern void c_expand_body (tree);
189
190extern void c_init_decl_processing (void);
191extern void c_dup_lang_specific_decl (tree);
192extern void c_print_identifier (FILE *, tree, int);
445extern void c_expand_body (tree);
446
447extern void c_init_decl_processing (void);
448extern void c_dup_lang_specific_decl (tree);
449extern void c_print_identifier (FILE *, tree, int);
193extern tree build_array_declarator (tree, tree, int, int);
450extern int quals_from_declspecs (const struct c_declspecs *);
451extern struct c_declarator *build_array_declarator (tree, struct c_declspecs *,
452 bool, bool);
194extern tree build_enumerator (tree, tree);
453extern tree build_enumerator (tree, tree);
195extern void check_for_loop_decls (void);
454extern tree check_for_loop_decls (void);
196extern void mark_forward_parm_decls (void);
455extern void mark_forward_parm_decls (void);
197extern int complete_array_type (tree, tree, int);
198extern void declare_parm_level (void);
456extern void declare_parm_level (void);
199extern void undeclared_variable (tree);
457extern void undeclared_variable (tree, location_t);
200extern tree declare_label (tree);
201extern tree define_label (location_t, tree);
458extern tree declare_label (tree);
459extern tree define_label (location_t, tree);
460extern void c_maybe_initialize_eh (void);
202extern void finish_decl (tree, tree, tree);
203extern tree finish_enum (tree, tree, tree);
204extern void finish_function (void);
205extern tree finish_struct (tree, tree, tree);
461extern void finish_decl (tree, tree, tree);
462extern tree finish_enum (tree, tree, tree);
463extern void finish_function (void);
464extern tree finish_struct (tree, tree, tree);
206extern tree get_parm_info (int);
207extern tree grokfield (tree, tree, tree);
208extern tree groktypename (tree);
209extern tree groktypename_in_parm_context (tree);
465extern struct c_arg_info *get_parm_info (bool);
466extern tree grokfield (struct c_declarator *, struct c_declspecs *, tree);
467extern tree groktypename (struct c_type_name *);
468extern tree grokparm (const struct c_parm *);
210extern tree implicitly_declare (tree);
469extern tree implicitly_declare (tree);
211extern int in_parm_level_p (void);
212extern void keep_next_level (void);
470extern void keep_next_level (void);
213extern tree lookup_name (tree);
214extern void pending_xref_error (void);
215extern void c_push_function_context (struct function *);
216extern void c_pop_function_context (struct function *);
471extern void pending_xref_error (void);
472extern void c_push_function_context (struct function *);
473extern void c_pop_function_context (struct function *);
217extern void push_parm_decl (tree);
218extern tree pushdecl_top_level (tree);
219extern void pushtag (tree, tree);
220extern tree set_array_declarator_type (tree, tree, int);
221extern void shadow_tag (tree);
222extern void shadow_tag_warned (tree, int);
474extern void push_parm_decl (const struct c_parm *);
475extern struct c_declarator *set_array_declarator_inner (struct c_declarator *,
476 struct c_declarator *,
477 bool);
478extern tree builtin_function (const char *, tree, int, enum built_in_class,
479 const char *, tree);
480extern void shadow_tag (const struct c_declspecs *);
481extern void shadow_tag_warned (const struct c_declspecs *, int);
223extern tree start_enum (tree);
482extern tree start_enum (tree);
224extern int start_function (tree, tree, tree);
225extern tree start_decl (tree, tree, int, tree);
483extern int start_function (struct c_declspecs *, struct c_declarator *, tree);
484extern tree start_decl (struct c_declarator *, struct c_declspecs *, bool,
485 tree);
226extern tree start_struct (enum tree_code, tree);
227extern void store_parm_decls (void);
486extern tree start_struct (enum tree_code, tree);
487extern void store_parm_decls (void);
488extern void store_parm_decls_from (struct c_arg_info *);
228extern tree xref_tag (enum tree_code, tree);
489extern tree xref_tag (enum tree_code, tree);
229extern tree c_begin_compound_stmt (void);
230extern void c_expand_deferred_function (tree);
231extern void c_expand_decl_stmt (tree);
232extern void c_static_assembler_name (tree);
233extern tree make_pointer_declarator (tree, tree);
234extern void merge_translation_unit_decls (void);
490extern struct c_typespec parser_xref_tag (enum tree_code, tree);
491extern int c_expand_decl (tree);
492extern struct c_parm *build_c_parm (struct c_declspecs *, tree,
493 struct c_declarator *);
494extern struct c_declarator *build_attrs_declarator (tree,
495 struct c_declarator *);
496extern struct c_declarator *build_function_declarator (struct c_arg_info *,
497 struct c_declarator *);
498extern struct c_declarator *build_id_declarator (tree);
499extern struct c_declarator *make_pointer_declarator (struct c_declspecs *,
500 struct c_declarator *);
501extern struct c_declspecs *build_null_declspecs (void);
502extern struct c_declspecs *declspecs_add_qual (struct c_declspecs *, tree);
503extern struct c_declspecs *declspecs_add_type (struct c_declspecs *,
504 struct c_typespec);
505extern struct c_declspecs *declspecs_add_scspec (struct c_declspecs *, tree);
506extern struct c_declspecs *declspecs_add_attrs (struct c_declspecs *, tree);
507extern struct c_declspecs *finish_declspecs (struct c_declspecs *);
235
236/* in c-objc-common.c */
237extern int c_disregard_inline_limits (tree);
238extern int c_cannot_inline_tree_fn (tree *);
239extern bool c_objc_common_init (void);
508
509/* in c-objc-common.c */
510extern int c_disregard_inline_limits (tree);
511extern int c_cannot_inline_tree_fn (tree *);
512extern bool c_objc_common_init (void);
240extern int c_missing_noreturn_ok_p (tree);
241extern void c_objc_common_finish_file (void);
242extern int defer_fn (tree);
513extern bool c_missing_noreturn_ok_p (tree);
514extern tree c_objc_common_truthvalue_conversion (tree expr);
243extern bool c_warn_unused_global_decl (tree);
515extern bool c_warn_unused_global_decl (tree);
516extern void c_initialize_diagnostics (diagnostic_context *);
517extern bool c_vla_unspec_p (tree x, tree fn);
244
245#define c_build_type_variant(TYPE, CONST_P, VOLATILE_P) \
246 c_build_qualified_type ((TYPE), \
247 ((CONST_P) ? TYPE_QUAL_CONST : 0) | \
248 ((VOLATILE_P) ? TYPE_QUAL_VOLATILE : 0))
249
518
519#define c_build_type_variant(TYPE, CONST_P, VOLATILE_P) \
520 c_build_qualified_type ((TYPE), \
521 ((CONST_P) ? TYPE_QUAL_CONST : 0) | \
522 ((VOLATILE_P) ? TYPE_QUAL_VOLATILE : 0))
523
250#define c_sizeof_nowarn(T) c_sizeof_or_alignof_type (T, SIZEOF_EXPR, 0)
251
252/* in c-typeck.c */
524/* in c-typeck.c */
525extern int in_alignof;
526extern int in_sizeof;
527extern int in_typeof;
253
528
254/* For use with comptypes. */
255enum {
256 COMPARE_STRICT = 0
257};
529extern struct c_switch *c_switch_stack;
530extern struct c_label_context_se *label_context_stack_se;
531extern struct c_label_context_vm *label_context_stack_vm;
258
259extern tree require_complete_type (tree);
532
533extern tree require_complete_type (tree);
260extern int comptypes (tree, tree, int);
261extern tree c_size_in_bytes (tree);
534extern int same_translation_unit_p (tree, tree);
535extern int comptypes (tree, tree);
536extern bool c_vla_type_p (tree);
262extern bool c_mark_addressable (tree);
263extern void c_incomplete_type_error (tree, tree);
264extern tree c_type_promotes_to (tree);
537extern bool c_mark_addressable (tree);
538extern void c_incomplete_type_error (tree, tree);
539extern tree c_type_promotes_to (tree);
540extern struct c_expr default_function_array_conversion (struct c_expr);
541extern tree composite_type (tree, tree);
265extern tree build_component_ref (tree, tree);
542extern tree build_component_ref (tree, tree);
266extern tree build_indirect_ref (tree, const char *);
267extern tree build_array_ref (tree, tree);
543extern tree build_array_ref (tree, tree);
268extern tree build_external_ref (tree, int);
269extern tree parser_build_binary_op (enum tree_code, tree, tree);
270extern int c_tree_expr_nonnegative_p (tree);
271extern void readonly_error (tree, const char *);
544extern tree build_external_ref (tree, int, location_t);
545extern void pop_maybe_used (bool);
546extern struct c_expr c_expr_sizeof_expr (struct c_expr);
547extern struct c_expr c_expr_sizeof_type (struct c_type_name *);
548extern struct c_expr parser_build_unary_op (enum tree_code, struct c_expr);
549extern struct c_expr parser_build_binary_op (enum tree_code, struct c_expr,
550 struct c_expr);
272extern tree build_conditional_expr (tree, tree, tree);
551extern tree build_conditional_expr (tree, tree, tree);
273extern tree build_compound_expr (tree);
274extern tree c_cast_expr (tree, tree);
552extern tree build_compound_expr (tree, tree);
553extern tree c_cast_expr (struct c_type_name *, tree);
275extern tree build_c_cast (tree, tree);
554extern tree build_c_cast (tree, tree);
276extern tree build_modify_expr (tree, enum tree_code, tree);
277extern void store_init_value (tree, tree);
278extern void error_init (const char *);
279extern void pedwarn_init (const char *);
555extern void store_init_value (tree, tree);
556extern void error_init (const char *);
557extern void pedwarn_init (const char *);
558extern void maybe_warn_string_init (tree, struct c_expr);
280extern void start_init (tree, tree, int);
281extern void finish_init (void);
282extern void really_start_incremental_init (tree);
283extern void push_init_level (int);
559extern void start_init (tree, tree, int);
560extern void finish_init (void);
561extern void really_start_incremental_init (tree);
562extern void push_init_level (int);
284extern tree pop_init_level (int);
563extern struct c_expr pop_init_level (int);
285extern void set_init_index (tree, tree);
286extern void set_init_label (tree);
564extern void set_init_index (tree, tree);
565extern void set_init_label (tree);
287extern void process_init_element (tree);
566extern void process_init_element (struct c_expr);
288extern tree build_compound_literal (tree, tree);
567extern tree build_compound_literal (tree, tree);
289extern void pedwarn_c90 (const char *, ...) ATTRIBUTE_PRINTF_1;
290extern void pedwarn_c99 (const char *, ...) ATTRIBUTE_PRINTF_1;
291extern tree c_start_case (tree);
568extern tree c_start_case (tree);
292extern void c_finish_case (void);
293extern tree simple_asm_stmt (tree);
294extern tree build_asm_stmt (tree, tree, tree, tree, tree);
569extern void c_finish_case (tree);
570extern tree build_asm_expr (tree, tree, tree, tree, bool);
571extern tree build_asm_stmt (tree, tree);
295extern tree c_convert_parm_for_inlining (tree, tree, tree, int);
572extern tree c_convert_parm_for_inlining (tree, tree, tree, int);
573extern int c_types_compatible_p (tree, tree);
574extern tree c_begin_compound_stmt (bool);
575extern tree c_end_compound_stmt (tree, bool);
576extern void c_finish_if_stmt (location_t, tree, tree, tree, bool);
577extern void c_finish_loop (location_t, tree, tree, tree, tree, tree, bool);
578extern tree c_begin_stmt_expr (void);
579extern tree c_finish_stmt_expr (tree);
580extern tree c_process_expr_stmt (tree);
581extern tree c_finish_expr_stmt (tree);
582extern tree c_finish_return (tree);
583extern tree c_finish_bc_stmt (tree *, bool);
584extern tree c_finish_goto_label (tree);
585extern tree c_finish_goto_ptr (tree);
586extern void c_begin_vm_scope (unsigned int);
587extern void c_end_vm_scope (unsigned int);
588extern tree c_expr_to_decl (tree, bool *, bool *, bool *);
589extern tree c_begin_omp_parallel (void);
590extern tree c_finish_omp_parallel (tree, tree);
591extern tree c_finish_omp_clauses (tree);
296
297/* Set to 0 at beginning of a function definition, set to 1 if
298 a return statement that specifies a return value is seen. */
299
300extern int current_function_returns_value;
301
302/* Set to 0 at beginning of a function definition, set to 1 if
303 a return statement with no argument is seen. */

--- 4 unchanged lines hidden (view full) ---

308 a call to a noreturn function is seen. */
309
310extern int current_function_returns_abnormally;
311
312/* Nonzero means we are reading code that came from a system header file. */
313
314extern int system_header_p;
315
592
593/* Set to 0 at beginning of a function definition, set to 1 if
594 a return statement that specifies a return value is seen. */
595
596extern int current_function_returns_value;
597
598/* Set to 0 at beginning of a function definition, set to 1 if
599 a return statement with no argument is seen. */

--- 4 unchanged lines hidden (view full) ---

604 a call to a noreturn function is seen. */
605
606extern int current_function_returns_abnormally;
607
608/* Nonzero means we are reading code that came from a system header file. */
609
610extern int system_header_p;
611
612/* True means global_bindings_p should return false even if the scope stack
613 says we are in file scope. */
614
615extern bool c_override_global_bindings_to_false;
616
617/* True means we've initialized exception handling. */
618extern bool c_eh_initialized_p;
619
316/* In c-decl.c */
317extern void c_finish_incomplete_decl (tree);
620/* In c-decl.c */
621extern void c_finish_incomplete_decl (tree);
318extern void *get_current_scope (void);
319extern void objc_mark_locals_volatile (void *);
320extern void c_write_global_declarations (void);
321
622extern void c_write_global_declarations (void);
623
322extern GTY(()) tree static_ctors;
323extern GTY(()) tree static_dtors;
324
325/* In order for the format checking to accept the C frontend
326 diagnostic framework extensions, you must include this file before
327 toplev.h, not after. */
624/* In order for the format checking to accept the C frontend
625 diagnostic framework extensions, you must include this file before
626 toplev.h, not after. */
328#define GCC_DIAG_STYLE __gcc_cdiag__
627#if GCC_VERSION >= 4001
628#define ATTRIBUTE_GCC_CDIAG(m, n) __attribute__ ((__format__ (GCC_DIAG_STYLE, m ,n))) ATTRIBUTE_NONNULL(m)
629#else
630#define ATTRIBUTE_GCC_CDIAG(m, n) ATTRIBUTE_NONNULL(m)
631#endif
329
632
633extern void pedwarn_c90 (const char *, ...) ATTRIBUTE_GCC_CDIAG(1,2);
634extern void pedwarn_c99 (const char *, ...) ATTRIBUTE_GCC_CDIAG(1,2);
635
330#endif /* ! GCC_C_TREE_H */
636#endif /* ! GCC_C_TREE_H */