|
0
|
1 /* Definitions for C parsing and type checking.
|
|
|
2 Copyright (C) 1987, 1993, 1994, 1995, 1997, 1998,
|
|
|
3 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009
|
|
|
4 Free Software Foundation, Inc.
|
|
|
5
|
|
|
6 This file is part of GCC.
|
|
|
7
|
|
|
8 GCC is free software; you can redistribute it and/or modify it under
|
|
|
9 the terms of the GNU General Public License as published by the Free
|
|
|
10 Software Foundation; either version 3, or (at your option) any later
|
|
|
11 version.
|
|
|
12
|
|
|
13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
|
|
|
14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
|
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
|
16 for more details.
|
|
|
17
|
|
|
18 You should have received a copy of the GNU General Public License
|
|
|
19 along with GCC; see the file COPYING3. If not see
|
|
|
20 <http://www.gnu.org/licenses/>. */
|
|
|
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"
|
|
|
28
|
|
|
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 *))
|
|
|
33
|
|
|
34 /* Language-specific declaration information. */
|
|
|
35
|
|
|
36 struct lang_decl GTY(())
|
|
|
37 {
|
|
|
38 char dummy;
|
|
|
39 };
|
|
|
40
|
|
|
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
|
|
|
60 struct lang_type GTY(())
|
|
|
61 {
|
|
|
62 /* In a RECORD_TYPE, a sorted array of the fields of the type. */
|
|
|
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;
|
|
|
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
|
|
|
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
|
|
|
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))
|
|
|
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
|
|
|
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. */
|
|
|
147 #define TYPE_ACTUAL_ARG_TYPES(NODE) TYPE_LANG_SLOT_1 (NODE)
|
|
|
148
|
|
|
149 /* Record parser information about an expression that is irrelevant
|
|
|
150 for code generation alongside a tree representing its value. */
|
|
|
151 struct c_expr
|
|
|
152 {
|
|
|
153 /* The value of the expression. */
|
|
|
154 tree value;
|
|
|
155 /* Record the original unary/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 };
|
|
|
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. */
|
|
|
165 enum 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. */
|
|
|
188 struct 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. */
|
|
|
196 enum 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", "_Decimal32", "_Decimal64", "_Decimal128", "_Fract", "_Accum",
|
|
|
207 or none of these. */
|
|
|
208 enum c_typespec_keyword {
|
|
|
209 cts_none,
|
|
|
210 cts_void,
|
|
|
211 cts_bool,
|
|
|
212 cts_char,
|
|
|
213 cts_int,
|
|
|
214 cts_float,
|
|
|
215 cts_double,
|
|
1
|
216 #ifndef noCbC
|
|
|
217 cts_CbC_code,
|
|
|
218 #endif
|
|
0
|
219 cts_dfloat32,
|
|
|
220 cts_dfloat64,
|
|
|
221 cts_dfloat128,
|
|
|
222 cts_fract,
|
|
|
223 cts_accum
|
|
|
224 };
|
|
|
225
|
|
|
226 /* A sequence of declaration specifiers in C. */
|
|
|
227 struct c_declspecs {
|
|
|
228 /* The type specified, if a single type specifier such as a struct,
|
|
|
229 union or enum specifier, typedef name or typeof specifies the
|
|
|
230 whole type, or NULL_TREE if none or a keyword such as "void" or
|
|
|
231 "char" is used. Does not include qualifiers. */
|
|
|
232 tree type;
|
|
|
233 /* The attributes from a typedef decl. */
|
|
|
234 tree decl_attr;
|
|
|
235 /* When parsing, the attributes. Outside the parser, this will be
|
|
|
236 NULL; attributes (possibly from multiple lists) will be passed
|
|
|
237 separately. */
|
|
|
238 tree attrs;
|
|
|
239 /* Any type specifier keyword used such as "int", not reflecting
|
|
|
240 modifiers such as "short", or cts_none if none. */
|
|
|
241 enum c_typespec_keyword typespec_word;
|
|
|
242 /* The storage class specifier, or csc_none if none. */
|
|
|
243 enum c_storage_class storage_class;
|
|
|
244 /* Whether any declaration specifiers have been seen at all. */
|
|
|
245 BOOL_BITFIELD declspecs_seen_p : 1;
|
|
|
246 /* Whether a type specifier has been seen. */
|
|
|
247 BOOL_BITFIELD type_seen_p : 1;
|
|
|
248 /* Whether something other than a storage class specifier or
|
|
|
249 attribute has been seen. This is used to warn for the
|
|
|
250 obsolescent usage of storage class specifiers other than at the
|
|
|
251 start of the list. (Doing this properly would require function
|
|
|
252 specifiers to be handled separately from storage class
|
|
|
253 specifiers.) */
|
|
|
254 BOOL_BITFIELD non_sc_seen_p : 1;
|
|
|
255 /* Whether the type is specified by a typedef or typeof name. */
|
|
|
256 BOOL_BITFIELD typedef_p : 1;
|
|
|
257 /* Whether a struct, union or enum type either had its content
|
|
|
258 defined by a type specifier in the list or was the first visible
|
|
|
259 declaration of its tag. */
|
|
|
260 BOOL_BITFIELD tag_defined_p : 1;
|
|
|
261 /* Whether the type is explicitly "signed" or specified by a typedef
|
|
|
262 whose type is explicitly "signed". */
|
|
|
263 BOOL_BITFIELD explicit_signed_p : 1;
|
|
|
264 /* Whether the specifiers include a deprecated typedef. */
|
|
|
265 BOOL_BITFIELD deprecated_p : 1;
|
|
|
266 /* Whether the type defaulted to "int" because there were no type
|
|
|
267 specifiers. */
|
|
|
268 BOOL_BITFIELD default_int_p;
|
|
|
269 /* Whether "long" was specified. */
|
|
|
270 BOOL_BITFIELD long_p : 1;
|
|
|
271 /* Whether "long" was specified more than once. */
|
|
|
272 BOOL_BITFIELD long_long_p : 1;
|
|
|
273 /* Whether "short" was specified. */
|
|
|
274 BOOL_BITFIELD short_p : 1;
|
|
|
275 /* Whether "signed" was specified. */
|
|
|
276 BOOL_BITFIELD signed_p : 1;
|
|
|
277 /* Whether "unsigned" was specified. */
|
|
|
278 BOOL_BITFIELD unsigned_p : 1;
|
|
|
279 /* Whether "complex" was specified. */
|
|
|
280 BOOL_BITFIELD complex_p : 1;
|
|
|
281 /* Whether "inline" was specified. */
|
|
|
282 BOOL_BITFIELD inline_p : 1;
|
|
|
283 /* Whether "__thread" was specified. */
|
|
|
284 BOOL_BITFIELD thread_p : 1;
|
|
|
285 /* Whether "const" was specified. */
|
|
|
286 BOOL_BITFIELD const_p : 1;
|
|
|
287 /* Whether "volatile" was specified. */
|
|
|
288 BOOL_BITFIELD volatile_p : 1;
|
|
|
289 /* Whether "restrict" was specified. */
|
|
|
290 BOOL_BITFIELD restrict_p : 1;
|
|
|
291 /* Whether "_Sat" was specified. */
|
|
|
292 BOOL_BITFIELD saturating_p : 1;
|
|
|
293 };
|
|
|
294
|
|
|
295 /* The various kinds of declarators in C. */
|
|
|
296 enum c_declarator_kind {
|
|
|
297 /* An identifier. */
|
|
|
298 cdk_id,
|
|
|
299 /* A function. */
|
|
|
300 cdk_function,
|
|
|
301 /* An array. */
|
|
|
302 cdk_array,
|
|
|
303 /* A pointer. */
|
|
|
304 cdk_pointer,
|
|
|
305 /* Parenthesized declarator with nested attributes. */
|
|
|
306 cdk_attrs
|
|
|
307 };
|
|
|
308
|
|
|
309 /* Information about the parameters in a function declarator. */
|
|
|
310 struct c_arg_info {
|
|
|
311 /* A list of parameter decls. */
|
|
|
312 tree parms;
|
|
|
313 /* A list of structure, union and enum tags defined. */
|
|
|
314 tree tags;
|
|
|
315 /* A list of argument types to go in the FUNCTION_TYPE. */
|
|
|
316 tree types;
|
|
|
317 /* A list of non-parameter decls (notably enumeration constants)
|
|
|
318 defined with the parameters. */
|
|
|
319 tree others;
|
|
|
320 /* A list of VLA sizes from the parameters. In a function
|
|
|
321 definition, these are used to ensure that side-effects in sizes
|
|
|
322 of arrays converted to pointers (such as a parameter int i[n++])
|
|
|
323 take place; otherwise, they are ignored. */
|
|
|
324 tree pending_sizes;
|
|
|
325 /* True when these arguments had [*]. */
|
|
|
326 BOOL_BITFIELD had_vla_unspec : 1;
|
|
|
327 };
|
|
|
328
|
|
|
329 /* A declarator. */
|
|
|
330 struct c_declarator {
|
|
|
331 /* The kind of declarator. */
|
|
|
332 enum c_declarator_kind kind;
|
|
|
333 /* Except for cdk_id, the contained declarator. For cdk_id, NULL. */
|
|
|
334 struct c_declarator *declarator;
|
|
|
335 location_t id_loc; /* Currently only set for cdk_id. */
|
|
|
336 union {
|
|
|
337 /* For identifiers, an IDENTIFIER_NODE or NULL_TREE if an abstract
|
|
|
338 declarator. */
|
|
|
339 tree id;
|
|
|
340 /* For functions. */
|
|
|
341 struct c_arg_info *arg_info;
|
|
|
342 /* For arrays. */
|
|
|
343 struct {
|
|
|
344 /* The array dimension, or NULL for [] and [*]. */
|
|
|
345 tree dimen;
|
|
|
346 /* The qualifiers inside []. */
|
|
|
347 int quals;
|
|
|
348 /* The attributes (currently ignored) inside []. */
|
|
|
349 tree attrs;
|
|
|
350 /* Whether [static] was used. */
|
|
|
351 BOOL_BITFIELD static_p : 1;
|
|
|
352 /* Whether [*] was used. */
|
|
|
353 BOOL_BITFIELD vla_unspec_p : 1;
|
|
|
354 } array;
|
|
|
355 /* For pointers, the qualifiers on the pointer type. */
|
|
|
356 int pointer_quals;
|
|
|
357 /* For attributes. */
|
|
|
358 tree attrs;
|
|
|
359 } u;
|
|
|
360 };
|
|
|
361
|
|
|
362 /* A type name. */
|
|
|
363 struct c_type_name {
|
|
|
364 /* The declaration specifiers. */
|
|
|
365 struct c_declspecs *specs;
|
|
|
366 /* The declarator. */
|
|
|
367 struct c_declarator *declarator;
|
|
|
368 };
|
|
|
369
|
|
|
370 /* A parameter. */
|
|
|
371 struct c_parm {
|
|
|
372 /* The declaration specifiers, minus any prefix attributes. */
|
|
|
373 struct c_declspecs *specs;
|
|
|
374 /* The attributes. */
|
|
|
375 tree attrs;
|
|
|
376 /* The declarator. */
|
|
|
377 struct c_declarator *declarator;
|
|
|
378 };
|
|
|
379
|
|
|
380 /* Save and restore the variables in this file and elsewhere
|
|
|
381 that keep track of the progress of compilation of the current function.
|
|
|
382 Used for nested functions. */
|
|
|
383
|
|
|
384 struct language_function GTY(())
|
|
|
385 {
|
|
|
386 struct c_language_function base;
|
|
|
387 tree x_break_label;
|
|
|
388 tree x_cont_label;
|
|
|
389 struct c_switch * GTY((skip)) x_switch_stack;
|
|
|
390 struct c_arg_info * GTY((skip)) arg_info;
|
|
|
391 int returns_value;
|
|
|
392 int returns_null;
|
|
|
393 int returns_abnormally;
|
|
|
394 int warn_about_return_type;
|
|
|
395 };
|
|
|
396
|
|
|
397 /* Save lists of labels used or defined in particular contexts.
|
|
|
398 Allocated on the parser obstack. */
|
|
|
399
|
|
|
400 struct c_label_list
|
|
|
401 {
|
|
|
402 /* The label at the head of the list. */
|
|
|
403 tree label;
|
|
|
404 /* The rest of the list. */
|
|
|
405 struct c_label_list *next;
|
|
|
406 };
|
|
|
407
|
|
|
408 /* Statement expression context. */
|
|
|
409
|
|
|
410 struct c_label_context_se
|
|
|
411 {
|
|
|
412 /* The labels defined at this level of nesting. */
|
|
|
413 struct c_label_list *labels_def;
|
|
|
414 /* The labels used at this level of nesting. */
|
|
|
415 struct c_label_list *labels_used;
|
|
|
416 /* The next outermost context. */
|
|
|
417 struct c_label_context_se *next;
|
|
|
418 };
|
|
|
419
|
|
|
420 /* Context of variably modified declarations. */
|
|
|
421
|
|
|
422 struct c_label_context_vm
|
|
|
423 {
|
|
|
424 /* The labels defined at this level of nesting. */
|
|
|
425 struct c_label_list *labels_def;
|
|
|
426 /* The labels used at this level of nesting. */
|
|
|
427 struct c_label_list *labels_used;
|
|
|
428 /* The scope of this context. Multiple contexts may be at the same
|
|
|
429 numbered scope, since each variably modified declaration starts a
|
|
|
430 new context. */
|
|
|
431 unsigned scope;
|
|
|
432 /* The next outermost context. */
|
|
|
433 struct c_label_context_vm *next;
|
|
|
434 };
|
|
|
435
|
|
|
436 /* Used when parsing an enum. Initialized by start_enum. */
|
|
|
437 struct c_enum_contents
|
|
|
438 {
|
|
|
439 /* While defining an enum type, this is 1 plus the last enumerator
|
|
|
440 constant value. */
|
|
|
441 tree enum_next_value;
|
|
|
442
|
|
|
443 /* Nonzero means that there was overflow computing enum_next_value. */
|
|
|
444 int enum_overflow;
|
|
|
445 };
|
|
|
446
|
|
|
447
|
|
|
448 /* in c-parser.c */
|
|
|
449 extern void c_parse_init (void);
|
|
|
450
|
|
|
451 /* in c-aux-info.c */
|
|
|
452 extern void gen_aux_info_record (tree, int, int, int);
|
|
|
453
|
|
|
454 /* in c-decl.c */
|
|
|
455 extern struct obstack parser_obstack;
|
|
|
456 extern tree c_break_label;
|
|
|
457 extern tree c_cont_label;
|
|
|
458
|
|
|
459 extern int global_bindings_p (void);
|
|
|
460 extern void push_scope (void);
|
|
|
461 extern tree pop_scope (void);
|
|
|
462
|
|
|
463 extern void c_init_decl_processing (void);
|
|
|
464 extern void c_dup_lang_specific_decl (tree);
|
|
|
465 extern void c_print_identifier (FILE *, tree, int);
|
|
|
466 extern int quals_from_declspecs (const struct c_declspecs *);
|
|
|
467 extern struct c_declarator *build_array_declarator (tree, struct c_declspecs *,
|
|
|
468 bool, bool);
|
|
|
469 extern tree build_enumerator (struct c_enum_contents *, tree, tree, location_t);
|
|
|
470 extern tree check_for_loop_decls (void);
|
|
|
471 extern void mark_forward_parm_decls (void);
|
|
|
472 extern void declare_parm_level (void);
|
|
|
473 extern void undeclared_variable (tree, location_t);
|
|
|
474 extern tree declare_label (tree);
|
|
|
475 extern tree define_label (location_t, tree);
|
|
|
476 extern void c_maybe_initialize_eh (void);
|
|
|
477 extern void finish_decl (tree, tree, tree);
|
|
|
478 extern tree finish_enum (tree, tree, tree);
|
|
|
479 extern void finish_function (void);
|
|
|
480 extern tree finish_struct (tree, tree, tree);
|
|
|
481 extern struct c_arg_info *get_parm_info (bool);
|
|
|
482 extern tree grokfield (location_t, struct c_declarator *,
|
|
|
483 struct c_declspecs *, tree, tree *);
|
|
|
484 extern tree groktypename (struct c_type_name *);
|
|
|
485 extern tree grokparm (const struct c_parm *);
|
|
1
|
486 #ifndef noCbC
|
|
|
487 extern tree implicitly_declare (tree,int);
|
|
|
488 #else
|
|
0
|
489 extern tree implicitly_declare (tree);
|
|
1
|
490 #endif
|
|
0
|
491 extern void keep_next_level (void);
|
|
|
492 extern void pending_xref_error (void);
|
|
|
493 extern void c_push_function_context (void);
|
|
|
494 extern void c_pop_function_context (void);
|
|
|
495 extern void push_parm_decl (const struct c_parm *);
|
|
|
496 extern struct c_declarator *set_array_declarator_inner (struct c_declarator *,
|
|
|
497 struct c_declarator *);
|
|
|
498 extern tree c_builtin_function (tree);
|
|
|
499 extern tree c_builtin_function_ext_scope (tree);
|
|
|
500 extern void shadow_tag (const struct c_declspecs *);
|
|
|
501 extern void shadow_tag_warned (const struct c_declspecs *, int);
|
|
|
502 extern tree start_enum (struct c_enum_contents *, tree);
|
|
|
503 extern int start_function (struct c_declspecs *, struct c_declarator *, tree);
|
|
|
504 extern tree start_decl (struct c_declarator *, struct c_declspecs *, bool,
|
|
|
505 tree);
|
|
|
506 extern tree start_struct (enum tree_code, tree);
|
|
|
507 extern void store_parm_decls (void);
|
|
|
508 extern void store_parm_decls_from (struct c_arg_info *);
|
|
|
509 extern tree xref_tag (enum tree_code, tree);
|
|
|
510 extern struct c_typespec parser_xref_tag (enum tree_code, tree);
|
|
|
511 extern int c_expand_decl (tree);
|
|
|
512 extern struct c_parm *build_c_parm (struct c_declspecs *, tree,
|
|
|
513 struct c_declarator *);
|
|
|
514 extern struct c_declarator *build_attrs_declarator (tree,
|
|
|
515 struct c_declarator *);
|
|
|
516 extern struct c_declarator *build_function_declarator (struct c_arg_info *,
|
|
|
517 struct c_declarator *);
|
|
|
518 extern struct c_declarator *build_id_declarator (tree);
|
|
|
519 extern struct c_declarator *make_pointer_declarator (struct c_declspecs *,
|
|
|
520 struct c_declarator *);
|
|
|
521 extern struct c_declspecs *build_null_declspecs (void);
|
|
|
522 extern struct c_declspecs *declspecs_add_qual (struct c_declspecs *, tree);
|
|
|
523 extern struct c_declspecs *declspecs_add_type (struct c_declspecs *,
|
|
|
524 struct c_typespec);
|
|
|
525 extern struct c_declspecs *declspecs_add_scspec (struct c_declspecs *, tree);
|
|
|
526 extern struct c_declspecs *declspecs_add_attrs (struct c_declspecs *, tree);
|
|
|
527 extern struct c_declspecs *finish_declspecs (struct c_declspecs *);
|
|
|
528
|
|
|
529 /* in c-objc-common.c */
|
|
|
530 extern bool c_objc_common_init (void);
|
|
|
531 extern bool c_missing_noreturn_ok_p (tree);
|
|
|
532 extern bool c_warn_unused_global_decl (const_tree);
|
|
|
533 extern void c_initialize_diagnostics (diagnostic_context *);
|
|
|
534 extern bool c_vla_unspec_p (tree x, tree fn);
|
|
|
535
|
|
|
536 #define c_build_type_variant(TYPE, CONST_P, VOLATILE_P) \
|
|
|
537 c_build_qualified_type ((TYPE), \
|
|
|
538 ((CONST_P) ? TYPE_QUAL_CONST : 0) | \
|
|
|
539 ((VOLATILE_P) ? TYPE_QUAL_VOLATILE : 0))
|
|
|
540
|
|
|
541 /* in c-typeck.c */
|
|
|
542 extern int in_alignof;
|
|
|
543 extern int in_sizeof;
|
|
|
544 extern int in_typeof;
|
|
|
545
|
|
|
546 extern struct c_switch *c_switch_stack;
|
|
|
547 extern struct c_label_context_se *label_context_stack_se;
|
|
|
548 extern struct c_label_context_vm *label_context_stack_vm;
|
|
|
549
|
|
|
550 extern tree c_objc_common_truthvalue_conversion (location_t, tree);
|
|
|
551 extern tree require_complete_type (tree);
|
|
|
552 extern int same_translation_unit_p (const_tree, const_tree);
|
|
|
553 extern int comptypes (tree, tree);
|
|
|
554 extern bool c_vla_type_p (const_tree);
|
|
|
555 extern bool c_mark_addressable (tree);
|
|
|
556 extern void c_incomplete_type_error (const_tree, const_tree);
|
|
|
557 extern tree c_type_promotes_to (tree);
|
|
|
558 extern struct c_expr default_function_array_conversion (struct c_expr);
|
|
|
559 extern tree composite_type (tree, tree);
|
|
|
560 extern tree build_component_ref (tree, tree);
|
|
|
561 extern tree build_array_ref (tree, tree, location_t);
|
|
|
562 extern tree build_external_ref (tree, int, location_t);
|
|
|
563 extern void pop_maybe_used (bool);
|
|
|
564 extern struct c_expr c_expr_sizeof_expr (struct c_expr);
|
|
|
565 extern struct c_expr c_expr_sizeof_type (struct c_type_name *);
|
|
|
566 extern struct c_expr parser_build_unary_op (enum tree_code, struct c_expr,
|
|
|
567 location_t);
|
|
|
568 extern struct c_expr parser_build_binary_op (location_t,
|
|
|
569 enum tree_code, struct c_expr,
|
|
|
570 struct c_expr);
|
|
|
571 extern tree build_conditional_expr (tree, tree, tree);
|
|
|
572 extern tree build_compound_expr (tree, tree);
|
|
|
573 extern tree c_cast_expr (struct c_type_name *, tree);
|
|
|
574 extern tree build_c_cast (tree, tree);
|
|
|
575 extern void store_init_value (tree, tree);
|
|
|
576 extern void error_init (const char *);
|
|
|
577 extern void pedwarn_init (location_t, int opt, const char *);
|
|
|
578 extern void maybe_warn_string_init (tree, struct c_expr);
|
|
|
579 extern void start_init (tree, tree, int);
|
|
|
580 extern void finish_init (void);
|
|
|
581 extern void really_start_incremental_init (tree);
|
|
|
582 extern void push_init_level (int);
|
|
|
583 extern struct c_expr pop_init_level (int);
|
|
|
584 extern void set_init_index (tree, tree);
|
|
|
585 extern void set_init_label (tree);
|
|
|
586 extern void process_init_element (struct c_expr, bool);
|
|
|
587 extern tree build_compound_literal (tree, tree);
|
|
|
588 extern tree c_start_case (tree);
|
|
|
589 extern void c_finish_case (tree);
|
|
|
590 extern tree build_asm_expr (tree, tree, tree, tree, bool);
|
|
|
591 extern tree build_asm_stmt (tree, tree);
|
|
|
592 extern int c_types_compatible_p (tree, tree);
|
|
|
593 extern tree c_begin_compound_stmt (bool);
|
|
|
594 extern tree c_end_compound_stmt (tree, bool);
|
|
|
595 extern void c_finish_if_stmt (location_t, tree, tree, tree, bool);
|
|
|
596 extern void c_finish_loop (location_t, tree, tree, tree, tree, tree, bool);
|
|
|
597 extern tree c_begin_stmt_expr (void);
|
|
|
598 extern tree c_finish_stmt_expr (tree);
|
|
|
599 extern tree c_process_expr_stmt (tree);
|
|
|
600 extern tree c_finish_expr_stmt (tree);
|
|
|
601 extern tree c_finish_return (tree);
|
|
|
602 extern tree c_finish_bc_stmt (tree *, bool);
|
|
|
603 extern tree c_finish_goto_label (tree);
|
|
|
604 extern tree c_finish_goto_ptr (tree);
|
|
|
605 extern void c_begin_vm_scope (unsigned int);
|
|
|
606 extern void c_end_vm_scope (unsigned int);
|
|
|
607 extern tree c_expr_to_decl (tree, bool *, bool *);
|
|
|
608 extern tree c_begin_omp_parallel (void);
|
|
|
609 extern tree c_finish_omp_parallel (tree, tree);
|
|
|
610 extern tree c_begin_omp_task (void);
|
|
|
611 extern tree c_finish_omp_task (tree, tree);
|
|
|
612 extern tree c_finish_omp_clauses (tree);
|
|
|
613
|
|
|
614 /* Set to 0 at beginning of a function definition, set to 1 if
|
|
|
615 a return statement that specifies a return value is seen. */
|
|
|
616
|
|
|
617 extern int current_function_returns_value;
|
|
|
618
|
|
|
619 /* Set to 0 at beginning of a function definition, set to 1 if
|
|
|
620 a return statement with no argument is seen. */
|
|
|
621
|
|
|
622 extern int current_function_returns_null;
|
|
|
623
|
|
|
624 /* Set to 0 at beginning of a function definition, set to 1 if
|
|
|
625 a call to a noreturn function is seen. */
|
|
|
626
|
|
|
627 extern int current_function_returns_abnormally;
|
|
|
628
|
|
|
629 /* Nonzero means we are reading code that came from a system header file. */
|
|
|
630
|
|
|
631 extern int system_header_p;
|
|
|
632
|
|
|
633 /* True means global_bindings_p should return false even if the scope stack
|
|
|
634 says we are in file scope. */
|
|
|
635
|
|
|
636 extern bool c_override_global_bindings_to_false;
|
|
|
637
|
|
|
638 /* True means we've initialized exception handling. */
|
|
|
639 extern bool c_eh_initialized_p;
|
|
|
640
|
|
|
641 /* In c-decl.c */
|
|
|
642 extern void c_finish_incomplete_decl (tree);
|
|
|
643 extern void c_write_global_declarations (void);
|
|
|
644
|
|
|
645 /* In order for the format checking to accept the C frontend
|
|
|
646 diagnostic framework extensions, you must include this file before
|
|
|
647 toplev.h, not after. */
|
|
|
648 #if GCC_VERSION >= 4001
|
|
|
649 #define ATTRIBUTE_GCC_CDIAG(m, n) __attribute__ ((__format__ (GCC_DIAG_STYLE, m ,n))) ATTRIBUTE_NONNULL(m)
|
|
|
650 #else
|
|
|
651 #define ATTRIBUTE_GCC_CDIAG(m, n) ATTRIBUTE_NONNULL(m)
|
|
|
652 #endif
|
|
|
653
|
|
|
654 extern void pedwarn_c90 (location_t, int opt, const char *, ...) ATTRIBUTE_GCC_CDIAG(3,4);
|
|
|
655 extern void pedwarn_c99 (location_t, int opt, const char *, ...) ATTRIBUTE_GCC_CDIAG(3,4);
|
|
|
656
|
|
|
657 #endif /* ! GCC_C_TREE_H */
|
