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7f4edbcb | 1 | /* Definitions for c-common.c. |
517cbe13 | 2 | Copyright (C) 1987, 1993, 1994, 1995, 1997, 1998, |
9dcd6f09 | 3 | 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007 Free Software Foundation, Inc. |
7f4edbcb | 4 | |
1322177d | 5 | This file is part of GCC. |
7f4edbcb | 6 | |
1322177d LB |
7 | GCC is free software; you can redistribute it and/or modify it under |
8 | the terms of the GNU General Public License as published by the Free | |
9dcd6f09 | 9 | Software Foundation; either version 3, or (at your option) any later |
1322177d | 10 | version. |
7f4edbcb | 11 | |
1322177d LB |
12 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 | for more details. | |
7f4edbcb BS |
16 | |
17 | You should have received a copy of the GNU General Public License | |
9dcd6f09 NC |
18 | along with GCC; see the file COPYING3. If not see |
19 | <http://www.gnu.org/licenses/>. */ | |
7f4edbcb | 20 | |
0e5921e8 ZW |
21 | #ifndef GCC_C_COMMON_H |
22 | #define GCC_C_COMMON_H | |
23 | ||
8f17b5c5 | 24 | #include "splay-tree.h" |
2a967f3d | 25 | #include "cpplib.h" |
d07605f5 | 26 | #include "ggc.h" |
8f17b5c5 | 27 | |
f2c5f623 | 28 | /* Usage of TREE_LANG_FLAG_?: |
325c3691 | 29 | 0: TREE_NEGATED_INT (in INTEGER_CST). |
f2c5f623 | 30 | IDENTIFIER_MARKED (used by search routines). |
f2c5f623 | 31 | DECL_PRETTY_FUNCTION_P (in VAR_DECL) |
f2c5f623 | 32 | 1: C_DECLARED_LABEL_FLAG (in LABEL_DECL) |
325c3691 | 33 | STATEMENT_LIST_STMT_EXPR (in STATEMENT_LIST) |
6de9cd9a | 34 | 2: unused |
174283a3 | 35 | 3: STATEMENT_LIST_HAS_LABEL (in STATEMENT_LIST) |
325c3691 | 36 | 4: unused |
f2c5f623 BC |
37 | */ |
38 | ||
0e5921e8 | 39 | /* Reserved identifiers. This is the union of all the keywords for C, |
40f03658 | 40 | C++, and Objective-C. All the type modifiers have to be in one |
0e5921e8 ZW |
41 | block at the beginning, because they are used as mask bits. There |
42 | are 27 type modifiers; if we add many more we will have to redesign | |
43 | the mask mechanism. */ | |
f09f1de5 MM |
44 | |
45 | enum rid | |
46 | { | |
0e5921e8 | 47 | /* Modifiers: */ |
2ba84f36 | 48 | /* C, in empirical order of frequency. */ |
0e5921e8 ZW |
49 | RID_STATIC = 0, |
50 | RID_UNSIGNED, RID_LONG, RID_CONST, RID_EXTERN, | |
51 | RID_REGISTER, RID_TYPEDEF, RID_SHORT, RID_INLINE, | |
52 | RID_VOLATILE, RID_SIGNED, RID_AUTO, RID_RESTRICT, | |
53 | ||
54 | /* C extensions */ | |
ab22c1fa | 55 | RID_COMPLEX, RID_THREAD, RID_SAT, |
0e5921e8 ZW |
56 | |
57 | /* C++ */ | |
58 | RID_FRIEND, RID_VIRTUAL, RID_EXPLICIT, RID_EXPORT, RID_MUTABLE, | |
59 | ||
60 | /* ObjC */ | |
b8363a24 | 61 | RID_IN, RID_OUT, RID_INOUT, RID_BYCOPY, RID_BYREF, RID_ONEWAY, |
0e5921e8 ZW |
62 | |
63 | /* C */ | |
64 | RID_INT, RID_CHAR, RID_FLOAT, RID_DOUBLE, RID_VOID, | |
65 | RID_ENUM, RID_STRUCT, RID_UNION, RID_IF, RID_ELSE, | |
66 | RID_WHILE, RID_DO, RID_FOR, RID_SWITCH, RID_CASE, | |
67 | RID_DEFAULT, RID_BREAK, RID_CONTINUE, RID_RETURN, RID_GOTO, | |
68 | RID_SIZEOF, | |
69 | ||
70 | /* C extensions */ | |
71 | RID_ASM, RID_TYPEOF, RID_ALIGNOF, RID_ATTRIBUTE, RID_VA_ARG, | |
da5b307a JM |
72 | RID_EXTENSION, RID_IMAGPART, RID_REALPART, RID_LABEL, RID_CHOOSE_EXPR, |
73 | RID_TYPES_COMPATIBLE_P, | |
9a8ce21f | 74 | RID_DFLOAT32, RID_DFLOAT64, RID_DFLOAT128, |
ab22c1fa | 75 | RID_FRACT, RID_ACCUM, |
0e5921e8 | 76 | |
eea1139b ILT |
77 | /* This means to warn that this is a C++ keyword, and then treat it |
78 | as a normal identifier. */ | |
79 | RID_CXX_COMPAT_WARN, | |
80 | ||
0ba8a114 NS |
81 | /* Too many ways of getting the name of a function as a string */ |
82 | RID_FUNCTION_NAME, RID_PRETTY_FUNCTION_NAME, RID_C99_FUNCTION_NAME, | |
83 | ||
0e5921e8 ZW |
84 | /* C++ */ |
85 | RID_BOOL, RID_WCHAR, RID_CLASS, | |
86 | RID_PUBLIC, RID_PRIVATE, RID_PROTECTED, | |
87 | RID_TEMPLATE, RID_NULL, RID_CATCH, | |
88 | RID_DELETE, RID_FALSE, RID_NAMESPACE, | |
c22cacf3 MS |
89 | RID_NEW, RID_OFFSETOF, RID_OPERATOR, |
90 | RID_THIS, RID_THROW, RID_TRUE, | |
91 | RID_TRY, RID_TYPENAME, RID_TYPEID, | |
b6baa67d | 92 | RID_USING, RID_CHAR16, RID_CHAR32, |
0e5921e8 ZW |
93 | |
94 | /* casts */ | |
95 | RID_CONSTCAST, RID_DYNCAST, RID_REINTCAST, RID_STATCAST, | |
96 | ||
cb68ec50 PC |
97 | /* C++ extensions */ |
98 | RID_HAS_NOTHROW_ASSIGN, RID_HAS_NOTHROW_CONSTRUCTOR, | |
99 | RID_HAS_NOTHROW_COPY, RID_HAS_TRIVIAL_ASSIGN, | |
100 | RID_HAS_TRIVIAL_CONSTRUCTOR, RID_HAS_TRIVIAL_COPY, | |
101 | RID_HAS_TRIVIAL_DESTRUCTOR, RID_HAS_VIRTUAL_DESTRUCTOR, | |
102 | RID_IS_ABSTRACT, RID_IS_BASE_OF, | |
103 | RID_IS_CONVERTIBLE_TO, RID_IS_CLASS, | |
104 | RID_IS_EMPTY, RID_IS_ENUM, | |
105 | RID_IS_POD, RID_IS_POLYMORPHIC, | |
106 | RID_IS_UNION, | |
107 | ||
218f0015 | 108 | /* C++0x */ |
3ad6a8e1 | 109 | RID_STATIC_ASSERT, RID_DECLTYPE, |
218f0015 | 110 | |
40f03658 | 111 | /* Objective-C */ |
3a3589b4 | 112 | RID_AT_ENCODE, RID_AT_END, |
0e5921e8 ZW |
113 | RID_AT_CLASS, RID_AT_ALIAS, RID_AT_DEFS, |
114 | RID_AT_PRIVATE, RID_AT_PROTECTED, RID_AT_PUBLIC, | |
c22cacf3 | 115 | RID_AT_PROTOCOL, RID_AT_SELECTOR, |
264fa2db ZL |
116 | RID_AT_THROW, RID_AT_TRY, RID_AT_CATCH, |
117 | RID_AT_FINALLY, RID_AT_SYNCHRONIZED, | |
118 | RID_AT_INTERFACE, | |
0e5921e8 ZW |
119 | RID_AT_IMPLEMENTATION, |
120 | ||
121 | RID_MAX, | |
122 | ||
123 | RID_FIRST_MODIFIER = RID_STATIC, | |
b8363a24 ZW |
124 | RID_LAST_MODIFIER = RID_ONEWAY, |
125 | ||
e1f1ee86 | 126 | RID_FIRST_CXX0X = RID_STATIC_ASSERT, |
3ad6a8e1 | 127 | RID_LAST_CXX0X = RID_DECLTYPE, |
b8363a24 ZW |
128 | RID_FIRST_AT = RID_AT_ENCODE, |
129 | RID_LAST_AT = RID_AT_IMPLEMENTATION, | |
130 | RID_FIRST_PQ = RID_IN, | |
131 | RID_LAST_PQ = RID_ONEWAY | |
f09f1de5 MM |
132 | }; |
133 | ||
b8363a24 | 134 | #define OBJC_IS_AT_KEYWORD(rid) \ |
3f75a254 JM |
135 | ((unsigned int) (rid) >= (unsigned int) RID_FIRST_AT && \ |
136 | (unsigned int) (rid) <= (unsigned int) RID_LAST_AT) | |
b8363a24 ZW |
137 | |
138 | #define OBJC_IS_PQ_KEYWORD(rid) \ | |
3f75a254 JM |
139 | ((unsigned int) (rid) >= (unsigned int) RID_FIRST_PQ && \ |
140 | (unsigned int) (rid) <= (unsigned int) RID_LAST_PQ) | |
b8363a24 | 141 | |
f09f1de5 MM |
142 | /* The elements of `ridpointers' are identifier nodes for the reserved |
143 | type names and storage classes. It is indexed by a RID_... value. */ | |
3f75a254 | 144 | extern GTY ((length ("(int) RID_MAX"))) tree *ridpointers; |
f09f1de5 | 145 | |
7f4edbcb BS |
146 | /* Standard named or nameless data types of the C compiler. */ |
147 | ||
148 | enum c_tree_index | |
149 | { | |
b6baa67d KVH |
150 | CTI_CHAR16_TYPE, |
151 | CTI_CHAR32_TYPE, | |
7f4edbcb BS |
152 | CTI_WCHAR_TYPE, |
153 | CTI_SIGNED_WCHAR_TYPE, | |
154 | CTI_UNSIGNED_WCHAR_TYPE, | |
c5ab7f91 | 155 | CTI_WINT_TYPE, |
cd732418 JM |
156 | CTI_SIGNED_SIZE_TYPE, /* For format checking only. */ |
157 | CTI_UNSIGNED_PTRDIFF_TYPE, /* For format checking only. */ | |
b15ad712 JM |
158 | CTI_INTMAX_TYPE, |
159 | CTI_UINTMAX_TYPE, | |
7f4edbcb BS |
160 | CTI_WIDEST_INT_LIT_TYPE, |
161 | CTI_WIDEST_UINT_LIT_TYPE, | |
162 | ||
7f4edbcb | 163 | CTI_CHAR_ARRAY_TYPE, |
b6baa67d KVH |
164 | CTI_CHAR16_ARRAY_TYPE, |
165 | CTI_CHAR32_ARRAY_TYPE, | |
7f4edbcb BS |
166 | CTI_WCHAR_ARRAY_TYPE, |
167 | CTI_INT_ARRAY_TYPE, | |
168 | CTI_STRING_TYPE, | |
169 | CTI_CONST_STRING_TYPE, | |
170 | ||
19552aa5 | 171 | /* Type for boolean expressions (bool in C++, int in C). */ |
de7df9eb JM |
172 | CTI_TRUTHVALUE_TYPE, |
173 | CTI_TRUTHVALUE_TRUE, | |
174 | CTI_TRUTHVALUE_FALSE, | |
175 | ||
7f4edbcb | 176 | CTI_DEFAULT_FUNCTION_TYPE, |
7f4edbcb | 177 | |
2ba84f36 | 178 | /* These are not types, but we have to look them up all the time. */ |
0ba8a114 NS |
179 | CTI_FUNCTION_NAME_DECL, |
180 | CTI_PRETTY_FUNCTION_NAME_DECL, | |
181 | CTI_C99_FUNCTION_NAME_DECL, | |
182 | CTI_SAVED_FUNCTION_NAME_DECLS, | |
c22cacf3 | 183 | |
ae499cce MM |
184 | CTI_VOID_ZERO, |
185 | ||
b2f97e4a MM |
186 | CTI_NULL, |
187 | ||
7f4edbcb BS |
188 | CTI_MAX |
189 | }; | |
190 | ||
5950c3c9 BE |
191 | #define C_CPP_HASHNODE(id) \ |
192 | (&(((struct c_common_identifier *) (id))->node)) | |
d75d71e0 ILT |
193 | #define C_RID_CODE(id) \ |
194 | ((enum rid) (((struct c_common_identifier *) (id))->node.rid_code)) | |
195 | #define C_SET_RID_CODE(id, code) \ | |
196 | (((struct c_common_identifier *) (id))->node.rid_code = (unsigned char) code) | |
2a967f3d NB |
197 | |
198 | /* Identifier part common to the C front ends. Inherits from | |
199 | tree_identifier, despite appearances. */ | |
e2500fed | 200 | struct c_common_identifier GTY(()) |
2a967f3d NB |
201 | { |
202 | struct tree_common common; | |
17211ab5 | 203 | struct cpp_hashnode node; |
2a967f3d NB |
204 | }; |
205 | ||
eea1139b ILT |
206 | /* An entry in the reserved keyword table. */ |
207 | ||
208 | struct c_common_resword | |
209 | { | |
210 | const char *const word; | |
211 | ENUM_BITFIELD(rid) const rid : 16; | |
212 | const unsigned int disable : 16; | |
213 | }; | |
214 | ||
215 | /* Disable mask. Keywords are disabled if (reswords[i].disable & | |
216 | mask) is _true_. Thus for keywords which are present in all | |
217 | languages the disable field is zero. */ | |
218 | ||
219 | #define D_CONLY 0x001 /* C only (not in C++). */ | |
220 | #define D_CXXONLY 0x002 /* C++ only (not in C). */ | |
221 | #define D_C99 0x004 /* In C, C99 only. */ | |
222 | #define D_CXX0X 0x008 /* In C++, C++0X only. */ | |
223 | #define D_EXT 0x010 /* GCC extension. */ | |
224 | #define D_EXT89 0x020 /* GCC extension incorporated in C99. */ | |
225 | #define D_ASM 0x040 /* Disabled by -fno-asm. */ | |
226 | #define D_OBJC 0x080 /* In Objective C and neither C nor C++. */ | |
227 | #define D_CXX_OBJC 0x100 /* In Objective C, and C++, but not C. */ | |
228 | #define D_CXXWARN 0x200 /* In C warn with -Wcxx-compat. */ | |
229 | ||
230 | /* The reserved keyword table. */ | |
231 | extern const struct c_common_resword c_common_reswords[]; | |
232 | ||
233 | /* The number of items in the reserved keyword table. */ | |
234 | extern const unsigned int num_c_common_reswords; | |
235 | ||
b6baa67d KVH |
236 | #define char16_type_node c_global_trees[CTI_CHAR16_TYPE] |
237 | #define char32_type_node c_global_trees[CTI_CHAR32_TYPE] | |
7f4edbcb BS |
238 | #define wchar_type_node c_global_trees[CTI_WCHAR_TYPE] |
239 | #define signed_wchar_type_node c_global_trees[CTI_SIGNED_WCHAR_TYPE] | |
240 | #define unsigned_wchar_type_node c_global_trees[CTI_UNSIGNED_WCHAR_TYPE] | |
c5ab7f91 | 241 | #define wint_type_node c_global_trees[CTI_WINT_TYPE] |
cd732418 JM |
242 | #define signed_size_type_node c_global_trees[CTI_SIGNED_SIZE_TYPE] |
243 | #define unsigned_ptrdiff_type_node c_global_trees[CTI_UNSIGNED_PTRDIFF_TYPE] | |
b15ad712 JM |
244 | #define intmax_type_node c_global_trees[CTI_INTMAX_TYPE] |
245 | #define uintmax_type_node c_global_trees[CTI_UINTMAX_TYPE] | |
7f4edbcb BS |
246 | #define widest_integer_literal_type_node c_global_trees[CTI_WIDEST_INT_LIT_TYPE] |
247 | #define widest_unsigned_literal_type_node c_global_trees[CTI_WIDEST_UINT_LIT_TYPE] | |
248 | ||
de7df9eb JM |
249 | #define truthvalue_type_node c_global_trees[CTI_TRUTHVALUE_TYPE] |
250 | #define truthvalue_true_node c_global_trees[CTI_TRUTHVALUE_TRUE] | |
251 | #define truthvalue_false_node c_global_trees[CTI_TRUTHVALUE_FALSE] | |
19552aa5 | 252 | |
7f4edbcb | 253 | #define char_array_type_node c_global_trees[CTI_CHAR_ARRAY_TYPE] |
b6baa67d KVH |
254 | #define char16_array_type_node c_global_trees[CTI_CHAR16_ARRAY_TYPE] |
255 | #define char32_array_type_node c_global_trees[CTI_CHAR32_ARRAY_TYPE] | |
7f4edbcb BS |
256 | #define wchar_array_type_node c_global_trees[CTI_WCHAR_ARRAY_TYPE] |
257 | #define int_array_type_node c_global_trees[CTI_INT_ARRAY_TYPE] | |
258 | #define string_type_node c_global_trees[CTI_STRING_TYPE] | |
259 | #define const_string_type_node c_global_trees[CTI_CONST_STRING_TYPE] | |
260 | ||
261 | #define default_function_type c_global_trees[CTI_DEFAULT_FUNCTION_TYPE] | |
7f4edbcb | 262 | |
0ba8a114 NS |
263 | #define function_name_decl_node c_global_trees[CTI_FUNCTION_NAME_DECL] |
264 | #define pretty_function_name_decl_node c_global_trees[CTI_PRETTY_FUNCTION_NAME_DECL] | |
265 | #define c99_function_name_decl_node c_global_trees[CTI_C99_FUNCTION_NAME_DECL] | |
266 | #define saved_function_name_decls c_global_trees[CTI_SAVED_FUNCTION_NAME_DECLS] | |
63ad61ed | 267 | |
ae499cce MM |
268 | /* A node for `((void) 0)'. */ |
269 | #define void_zero_node c_global_trees[CTI_VOID_ZERO] | |
270 | ||
b2f97e4a MM |
271 | /* The node for C++ `__null'. */ |
272 | #define null_node c_global_trees[CTI_NULL] | |
273 | ||
e2500fed | 274 | extern GTY(()) tree c_global_trees[CTI_MAX]; |
ab76ca54 | 275 | |
e0a21ab9 KH |
276 | /* In a RECORD_TYPE, a sorted array of the fields of the type, not a |
277 | tree for size reasons. */ | |
d07605f5 AP |
278 | struct sorted_fields_type GTY(()) |
279 | { | |
280 | int len; | |
281 | tree GTY((length ("%h.len"))) elts[1]; | |
282 | }; | |
283 | ||
8f17b5c5 MM |
284 | /* Mark which labels are explicitly declared. |
285 | These may be shadowed, and may be referenced from nested functions. */ | |
286 | #define C_DECLARED_LABEL_FLAG(label) TREE_LANG_FLAG_1 (label) | |
287 | ||
ab76ca54 MM |
288 | typedef enum c_language_kind |
289 | { | |
37fa72e9 NB |
290 | clk_c = 0, /* C90, C94 or C99 */ |
291 | clk_objc = 1, /* clk_c with ObjC features. */ | |
292 | clk_cxx = 2, /* ANSI/ISO C++ */ | |
293 | clk_objcxx = 3 /* clk_cxx with ObjC features. */ | |
21c7361e | 294 | } |
ab76ca54 MM |
295 | c_language_kind; |
296 | ||
37fa72e9 NB |
297 | /* To test for a specific language use c_language, defined by each |
298 | front end. For "ObjC features" or "not C++" use the macros. */ | |
299 | extern c_language_kind c_language; | |
300 | ||
301 | #define c_dialect_cxx() (c_language & clk_cxx) | |
302 | #define c_dialect_objc() (c_language & clk_objc) | |
303 | ||
ae499cce MM |
304 | /* Information about a statement tree. */ |
305 | ||
e2500fed | 306 | struct stmt_tree_s GTY(()) { |
35fd3193 | 307 | /* The current statement list being collected. */ |
325c3691 RH |
308 | tree x_cur_stmt_list; |
309 | ||
da7d8304 | 310 | /* In C++, Nonzero if we should treat statements as full |
ae499cce MM |
311 | expressions. In particular, this variable is no-zero if at the |
312 | end of a statement we should destroy any temporaries created | |
313 | during that statement. Similarly, if, at the end of a block, we | |
314 | should destroy any local variables in this block. Normally, this | |
da7d8304 | 315 | variable is nonzero, since those are the normal semantics of |
ae499cce MM |
316 | C++. |
317 | ||
318 | However, in order to represent aggregate initialization code as | |
319 | tree structure, we use statement-expressions. The statements | |
320 | within the statement expression should not result in cleanups | |
21c7361e | 321 | being run until the entire enclosing statement is complete. |
ae499cce MM |
322 | |
323 | This flag has no effect in C. */ | |
21c7361e | 324 | int stmts_are_full_exprs_p; |
ae499cce MM |
325 | }; |
326 | ||
327 | typedef struct stmt_tree_s *stmt_tree; | |
328 | ||
329 | /* Global state pertinent to the current function. Some C dialects | |
330 | extend this structure with additional fields. */ | |
331 | ||
e2500fed | 332 | struct c_language_function GTY(()) { |
ae499cce MM |
333 | /* While we are parsing the function, this contains information |
334 | about the statement-tree that we are building. */ | |
335 | struct stmt_tree_s x_stmt_tree; | |
336 | }; | |
337 | ||
35fd3193 | 338 | /* When building a statement-tree, this is the current statement list |
325c3691 | 339 | being collected. It's TREE_CHAIN is a back-pointer to the previous |
35fd3193 | 340 | statement list. */ |
ae499cce | 341 | |
325c3691 | 342 | #define cur_stmt_list (current_stmt_tree ()->x_cur_stmt_list) |
8f17b5c5 MM |
343 | |
344 | /* Language-specific hooks. */ | |
345 | ||
4684cd27 MM |
346 | /* If non-NULL, this function is called after a precompile header file |
347 | is loaded. */ | |
348 | extern void (*lang_post_pch_load) (void); | |
349 | ||
f75fbaf7 ZW |
350 | extern void push_file_scope (void); |
351 | extern void pop_file_scope (void); | |
35b1a6fa | 352 | extern stmt_tree current_stmt_tree (void); |
325c3691 | 353 | extern tree push_stmt_list (void); |
325c3691 | 354 | extern tree pop_stmt_list (tree); |
35b1a6fa | 355 | extern tree add_stmt (tree); |
325c3691 | 356 | extern void push_cleanup (tree, tree, bool); |
953ff289 DN |
357 | extern tree pushdecl_top_level (tree); |
358 | extern tree pushdecl (tree); | |
c9f9eb5d AH |
359 | extern tree build_modify_expr (location_t, tree, enum tree_code, tree); |
360 | extern tree build_indirect_ref (location_t, tree, const char *); | |
35b1a6fa | 361 | |
3c79fa86 | 362 | extern int c_expand_decl (tree); |
c1e14513 | 363 | |
d07605f5 | 364 | extern int field_decl_cmp (const void *, const void *); |
c22cacf3 MS |
365 | extern void resort_sorted_fields (void *, void *, gt_pointer_operator, |
366 | void *); | |
58f9752a | 367 | extern bool has_c_linkage (const_tree decl); |
17211ab5 | 368 | \f |
4078b403 NB |
369 | /* Switches common to the C front ends. */ |
370 | ||
aaf93206 | 371 | /* Nonzero if prepreprocessing only. */ |
17211ab5 | 372 | |
aaf93206 NB |
373 | extern int flag_preprocess_only; |
374 | ||
264fa2db ZL |
375 | /* Zero means that faster, ...NonNil variants of objc_msgSend... |
376 | calls will be used in ObjC; passing nil receivers to such calls | |
377 | will most likely result in crashes. */ | |
378 | extern int flag_nil_receivers; | |
379 | ||
380 | /* Nonzero means that we will allow new ObjC exception syntax (@throw, | |
381 | @try, etc.) in source code. */ | |
382 | extern int flag_objc_exceptions; | |
383 | ||
093c7153 RH |
384 | /* Nonzero means that we generate NeXT setjmp based exceptions. */ |
385 | extern int flag_objc_sjlj_exceptions; | |
386 | ||
264fa2db ZL |
387 | /* Nonzero means that code generation will be altered to support |
388 | "zero-link" execution. This currently affects ObjC only, but may | |
389 | affect other languages in the future. */ | |
390 | extern int flag_zero_link; | |
391 | ||
392 | /* Nonzero means emit an '__OBJC, __image_info' for the current translation | |
393 | unit. It will inform the ObjC runtime that class definition(s) herein | |
394 | contained are to replace one(s) previously loaded. */ | |
395 | extern int flag_replace_objc_classes; | |
396 | ||
63973df3 NB |
397 | /* Nonzero means don't output line number information. */ |
398 | ||
399 | extern char flag_no_line_commands; | |
400 | ||
401 | /* Nonzero causes -E output not to be done, but directives such as | |
402 | #define that have side effects are still obeyed. */ | |
403 | ||
404 | extern char flag_no_output; | |
405 | ||
93d45d9e JM |
406 | /* Nonzero means dump macros in some fashion; contains the 'D', 'M', |
407 | 'N' or 'U' of the command line switch. */ | |
63973df3 NB |
408 | |
409 | extern char flag_dump_macros; | |
410 | ||
411 | /* Nonzero means pass #include lines through to the output. */ | |
412 | ||
413 | extern char flag_dump_includes; | |
414 | ||
c0d578e6 GK |
415 | /* Nonzero means process PCH files while preprocessing. */ |
416 | ||
417 | extern bool flag_pch_preprocess; | |
418 | ||
17211ab5 GK |
419 | /* The file name to which we should write a precompiled header, or |
420 | NULL if no header will be written in this compile. */ | |
421 | ||
422 | extern const char *pch_file; | |
423 | ||
3df89291 NB |
424 | /* Nonzero if an ISO standard was selected. It rejects macros in the |
425 | user's namespace. */ | |
17211ab5 | 426 | |
3df89291 NB |
427 | extern int flag_iso; |
428 | ||
429 | /* Nonzero if -undef was given. It suppresses target built-in macros | |
430 | and assertions. */ | |
17211ab5 | 431 | |
3df89291 NB |
432 | extern int flag_undef; |
433 | ||
4078b403 | 434 | /* Nonzero means don't recognize the non-ANSI builtin functions. */ |
ab76ca54 | 435 | |
4078b403 NB |
436 | extern int flag_no_builtin; |
437 | ||
438 | /* Nonzero means don't recognize the non-ANSI builtin functions. | |
439 | -ansi sets this. */ | |
440 | ||
441 | extern int flag_no_nonansi_builtin; | |
ab76ca54 | 442 | |
eaa7c03f JM |
443 | /* Nonzero means give `double' the same size as `float'. */ |
444 | ||
445 | extern int flag_short_double; | |
446 | ||
447 | /* Nonzero means give `wchar_t' the same size as `short'. */ | |
448 | ||
449 | extern int flag_short_wchar; | |
450 | ||
00c8e9f6 MS |
451 | /* Nonzero means allow implicit conversions between vectors with |
452 | differing numbers of subparts and/or differing element types. */ | |
453 | extern int flag_lax_vector_conversions; | |
454 | ||
750491fc RH |
455 | /* Nonzero means allow Microsoft extensions without warnings or errors. */ |
456 | extern int flag_ms_extensions; | |
457 | ||
4078b403 NB |
458 | /* Nonzero means don't recognize the keyword `asm'. */ |
459 | ||
460 | extern int flag_no_asm; | |
461 | ||
462 | /* Nonzero means give string constants the type `const char *', as mandated | |
463 | by the standard. */ | |
464 | ||
465 | extern int flag_const_strings; | |
466 | ||
4078b403 NB |
467 | /* Nonzero means to treat bitfields as signed unless they say `unsigned'. */ |
468 | ||
469 | extern int flag_signed_bitfields; | |
4078b403 | 470 | |
c22cacf3 | 471 | /* Warn about #pragma directives that are not recognized. */ |
4078b403 | 472 | |
c22cacf3 | 473 | extern int warn_unknown_pragmas; /* Tri state variable. */ |
4078b403 | 474 | |
4078b403 NB |
475 | /* Warn about format/argument anomalies in calls to formatted I/O functions |
476 | (*printf, *scanf, strftime, strfmon, etc.). */ | |
ab76ca54 MM |
477 | |
478 | extern int warn_format; | |
479 | ||
b34c7881 | 480 | |
4078b403 | 481 | /* C/ObjC language option variables. */ |
b34c7881 | 482 | |
2683ed8d | 483 | |
4078b403 NB |
484 | /* Nonzero means allow type mismatches in conditional expressions; |
485 | just make their values `void'. */ | |
74ff4629 | 486 | |
4078b403 | 487 | extern int flag_cond_mismatch; |
6c36d76b | 488 | |
eaf299c6 | 489 | /* Nonzero means enable C89 Amendment 1 features. */ |
b8458e3e JM |
490 | |
491 | extern int flag_isoc94; | |
492 | ||
ab76ca54 MM |
493 | /* Nonzero means use the ISO C99 dialect of C. */ |
494 | ||
495 | extern int flag_isoc99; | |
496 | ||
6614fd40 | 497 | /* Nonzero means that we have builtin functions, and main is an int. */ |
93e2382f JM |
498 | |
499 | extern int flag_hosted; | |
500 | ||
4078b403 NB |
501 | /* ObjC language option variables. */ |
502 | ||
503 | ||
504 | /* Open and close the file for outputting class declarations, if | |
505 | requested (ObjC). */ | |
506 | ||
507 | extern int flag_gen_declaration; | |
508 | ||
4078b403 NB |
509 | /* Tells the compiler that this is a special run. Do not perform any |
510 | compiling, instead we are to test some platform dependent features | |
511 | and output a C header file with appropriate definitions. */ | |
512 | ||
513 | extern int print_struct_values; | |
514 | ||
515 | /* ???. Undocumented. */ | |
516 | ||
fd350d24 | 517 | extern const char *constant_string_class_name; |
4078b403 | 518 | |
4078b403 NB |
519 | |
520 | /* C++ language option variables. */ | |
521 | ||
522 | ||
523 | /* Nonzero means don't recognize any extension keywords. */ | |
524 | ||
525 | extern int flag_no_gnu_keywords; | |
526 | ||
527 | /* Nonzero means do emit exported implementations of functions even if | |
528 | they can be inlined. */ | |
529 | ||
530 | extern int flag_implement_inlines; | |
531 | ||
4078b403 NB |
532 | /* Nonzero means that implicit instantiations will be emitted if needed. */ |
533 | ||
534 | extern int flag_implicit_templates; | |
535 | ||
536 | /* Nonzero means that implicit instantiations of inline templates will be | |
537 | emitted if needed, even if instantiations of non-inline templates | |
538 | aren't. */ | |
539 | ||
540 | extern int flag_implicit_inline_templates; | |
541 | ||
542 | /* Nonzero means generate separate instantiation control files and | |
543 | juggle them at link time. */ | |
544 | ||
545 | extern int flag_use_repository; | |
546 | ||
547 | /* Nonzero if we want to issue diagnostics that the standard says are not | |
548 | required. */ | |
549 | ||
550 | extern int flag_optional_diags; | |
551 | ||
552 | /* Nonzero means we should attempt to elide constructors when possible. */ | |
553 | ||
554 | extern int flag_elide_constructors; | |
555 | ||
556 | /* Nonzero means that member functions defined in class scope are | |
557 | inline by default. */ | |
558 | ||
559 | extern int flag_default_inline; | |
560 | ||
561 | /* Controls whether compiler generates 'type descriptor' that give | |
562 | run-time type information. */ | |
563 | ||
564 | extern int flag_rtti; | |
565 | ||
566 | /* Nonzero if we want to conserve space in the .o files. We do this | |
567 | by putting uninitialized data and runtime initialized data into | |
568 | .common instead of .data at the expense of not flagging multiple | |
569 | definitions. */ | |
570 | ||
571 | extern int flag_conserve_space; | |
572 | ||
573 | /* Nonzero if we want to obey access control semantics. */ | |
574 | ||
575 | extern int flag_access_control; | |
576 | ||
577 | /* Nonzero if we want to check the return value of new and avoid calling | |
578 | constructors if it is a null pointer. */ | |
579 | ||
580 | extern int flag_check_new; | |
581 | ||
c1ae8be5 SM |
582 | /* The supported C++ dialects. */ |
583 | ||
584 | enum cxx_dialect { | |
585 | /* C++98 */ | |
586 | cxx98, | |
587 | /* Experimental features that are likely to become part of | |
588 | C++0x. */ | |
589 | cxx0x | |
590 | }; | |
966541e3 | 591 | |
c1ae8be5 SM |
592 | /* The C++ dialect being used. C++98 is the default. */ |
593 | extern enum cxx_dialect cxx_dialect; | |
966541e3 | 594 | |
4078b403 NB |
595 | /* Nonzero if we want the new ISO rules for pushing a new scope for `for' |
596 | initialization variables. | |
597 | 0: Old rules, set by -fno-for-scope. | |
598 | 2: New ISO rules, set by -ffor-scope. | |
599 | 1: Try to implement new ISO rules, but with backup compatibility | |
600 | (and warnings). This is the default, for now. */ | |
601 | ||
602 | extern int flag_new_for_scope; | |
603 | ||
604 | /* Nonzero if we want to emit defined symbols with common-like linkage as | |
605 | weak symbols where possible, in order to conform to C++ semantics. | |
606 | Otherwise, emit them as local symbols. */ | |
607 | ||
608 | extern int flag_weak; | |
609 | ||
b20d9f0c AO |
610 | /* 0 means we want the preprocessor to not emit line directives for |
611 | the current working directory. 1 means we want it to do it. -1 | |
612 | means we should decide depending on whether debugging information | |
613 | is being emitted or not. */ | |
614 | ||
615 | extern int flag_working_directory; | |
616 | ||
4078b403 NB |
617 | /* Nonzero to use __cxa_atexit, rather than atexit, to register |
618 | destructors for local statics and global objects. */ | |
619 | ||
620 | extern int flag_use_cxa_atexit; | |
621 | ||
c7b5e395 GK |
622 | /* Nonzero to use __cxa_get_exception_ptr in the C++ exception-handling |
623 | logic. */ | |
624 | ||
625 | extern int flag_use_cxa_get_exception_ptr; | |
626 | ||
4078b403 NB |
627 | /* Nonzero means to implement standard semantics for exception |
628 | specifications, calling unexpected if an exception is thrown that | |
629 | doesn't match the specification. Zero means to treat them as | |
630 | assertions and optimize accordingly, but not check them. */ | |
631 | ||
632 | extern int flag_enforce_eh_specs; | |
633 | ||
40aac948 JM |
634 | /* Nonzero (the default) means to generate thread-safe code for |
635 | initializing local statics. */ | |
636 | ||
637 | extern int flag_threadsafe_statics; | |
638 | ||
4078b403 NB |
639 | /* Nonzero means warn about implicit declarations. */ |
640 | ||
641 | extern int warn_implicit; | |
642 | ||
b2f97e4a MM |
643 | /* Warn about using __null (as NULL in C++) as sentinel. For code compiled |
644 | with GCC this doesn't matter as __null is guaranteed to have the right | |
645 | size. */ | |
646 | ||
647 | extern int warn_strict_null_sentinel; | |
648 | ||
4078b403 NB |
649 | /* Maximum template instantiation depth. This limit is rather |
650 | arbitrary, but it exists to limit the time it takes to notice | |
651 | infinite template instantiations. */ | |
652 | ||
653 | extern int max_tinst_depth; | |
ab76ca54 | 654 | |
25587e40 AO |
655 | /* Nonzero means the expression being parsed will never be evaluated. |
656 | This is a count, since unevaluated expressions can nest. */ | |
657 | ||
658 | extern int skip_evaluation; | |
659 | ||
ab76ca54 MM |
660 | /* C types are partitioned into three subsets: object, function, and |
661 | incomplete types. */ | |
662 | #define C_TYPE_OBJECT_P(type) \ | |
663 | (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type)) | |
664 | ||
665 | #define C_TYPE_INCOMPLETE_P(type) \ | |
666 | (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type) == 0) | |
667 | ||
668 | #define C_TYPE_FUNCTION_P(type) \ | |
669 | (TREE_CODE (type) == FUNCTION_TYPE) | |
670 | ||
671 | /* For convenience we define a single macro to identify the class of | |
672 | object or incomplete types. */ | |
673 | #define C_TYPE_OBJECT_OR_INCOMPLETE_P(type) \ | |
674 | (!C_TYPE_FUNCTION_P (type)) | |
675 | ||
349ae713 NB |
676 | /* Attribute table common to the C front ends. */ |
677 | extern const struct attribute_spec c_common_attribute_table[]; | |
678 | extern const struct attribute_spec c_common_format_attribute_table[]; | |
679 | ||
0ba8a114 | 680 | /* Pointer to function to lazily generate the VAR_DECL for __FUNCTION__ etc. |
2ce07e2d NS |
681 | ID is the identifier to use, NAME is the string. |
682 | TYPE_DEP indicates whether it depends on type of the function or not | |
683 | (i.e. __PRETTY_FUNCTION__). */ | |
684 | ||
35b1a6fa AJ |
685 | extern tree (*make_fname_decl) (tree, int); |
686 | ||
687 | extern tree identifier_global_value (tree); | |
688 | extern void record_builtin_type (enum rid, const char *, tree); | |
689 | extern tree build_void_list_node (void); | |
690 | extern void start_fname_decls (void); | |
691 | extern void finish_fname_decls (void); | |
692 | extern const char *fname_as_string (int); | |
3ba09659 | 693 | extern tree fname_decl (location_t, unsigned, tree); |
35b1a6fa | 694 | |
94a0dd7b | 695 | extern void check_function_arguments (tree, int, tree *, tree); |
35b1a6fa AJ |
696 | extern void check_function_arguments_recurse (void (*) |
697 | (void *, tree, | |
698 | unsigned HOST_WIDE_INT), | |
699 | void *, tree, | |
700 | unsigned HOST_WIDE_INT); | |
83322951 | 701 | extern bool check_builtin_function_arguments (tree, int, tree *); |
94a0dd7b | 702 | extern void check_function_format (tree, int, tree *); |
35b1a6fa AJ |
703 | extern void set_Wformat (int); |
704 | extern tree handle_format_attribute (tree *, tree, tree, int, bool *); | |
705 | extern tree handle_format_arg_attribute (tree *, tree, tree, int, bool *); | |
2772ef3e | 706 | extern int c_common_handle_option (size_t code, const char *arg, int value); |
cb66e385 | 707 | extern bool c_common_missing_argument (const char *opt, size_t code); |
35b1a6fa AJ |
708 | extern tree c_common_type_for_mode (enum machine_mode, int); |
709 | extern tree c_common_type_for_size (unsigned int, int); | |
ab22c1fa CF |
710 | extern tree c_common_fixed_point_type_for_size (unsigned int, unsigned int, |
711 | int, int); | |
12753674 | 712 | extern tree c_common_unsigned_type (tree); |
35b1a6fa AJ |
713 | extern tree c_common_signed_type (tree); |
714 | extern tree c_common_signed_or_unsigned_type (int, tree); | |
38a4afee | 715 | extern tree c_build_bitfield_integer_type (unsigned HOST_WIDE_INT, int); |
58f9752a | 716 | extern bool decl_with_nonnull_addr_p (const_tree); |
ba47d38d | 717 | extern tree c_common_truthvalue_conversion (location_t, tree); |
35b1a6fa | 718 | extern void c_apply_type_quals_to_decl (int, tree); |
03a08664 | 719 | extern tree c_sizeof_or_alignof_type (tree, bool, int); |
35b1a6fa | 720 | extern tree c_alignof_expr (tree); |
7f4edbcb BS |
721 | /* Print an error message for invalid operands to arith operation CODE. |
722 | NOP_EXPR is used as a special case (see truthvalue_conversion). */ | |
ba47d38d | 723 | extern void binary_op_error (location_t, enum tree_code, tree, tree); |
35b1a6fa | 724 | extern tree fix_string_type (tree); |
b84a3874 | 725 | struct varray_head_tag; |
35b1a6fa | 726 | extern void constant_expression_warning (tree); |
393eda6a | 727 | extern void constant_expression_error (tree); |
79bedddc | 728 | extern bool strict_aliasing_warning (tree, tree, tree); |
07231d4f | 729 | extern void warnings_for_convert_and_check (tree, tree, tree); |
35b1a6fa AJ |
730 | extern tree convert_and_check (tree, tree); |
731 | extern void overflow_warning (tree); | |
63a08740 | 732 | extern void warn_logical_operator (enum tree_code, tree, tree); |
a1e45ff0 | 733 | extern void check_main_parameter_types (tree decl); |
b2ca3702 | 734 | extern bool c_determine_visibility (tree); |
5bed876a | 735 | extern bool same_scalar_type_ignoring_signedness (tree, tree); |
ab76ca54 | 736 | |
03a08664 ILT |
737 | #define c_sizeof(T) c_sizeof_or_alignof_type (T, true, 1) |
738 | #define c_alignof(T) c_sizeof_or_alignof_type (T, false, 1) | |
7f4edbcb | 739 | |
6715192c MLI |
740 | /* Subroutine of build_binary_op, used for certain operations. */ |
741 | extern tree shorten_binary_op (tree result_type, tree op0, tree op1, bool bitwise); | |
742 | ||
7f4edbcb BS |
743 | /* Subroutine of build_binary_op, used for comparison operations. |
744 | See if the operands have both been converted from subword integer types | |
745 | and, if so, perhaps change them both back to their original type. */ | |
35b1a6fa | 746 | extern tree shorten_compare (tree *, tree *, tree *, enum tree_code *); |
7f4edbcb | 747 | |
35b1a6fa AJ |
748 | extern tree pointer_int_sum (enum tree_code, tree, tree); |
749 | extern unsigned int min_precision (tree, int); | |
50e60bc3 ZW |
750 | |
751 | /* Add qualifiers to a type, in the fashion for C. */ | |
35b1a6fa | 752 | extern tree c_build_qualified_type (tree, int); |
50e60bc3 | 753 | |
7f4edbcb BS |
754 | /* Build tree nodes and builtin functions common to both C and C++ language |
755 | frontends. */ | |
35b1a6fa | 756 | extern void c_common_nodes_and_builtins (void); |
d3707adb | 757 | |
b482789c MA |
758 | extern void set_builtin_user_assembler_name (tree decl, const char *asmspec); |
759 | ||
35b1a6fa | 760 | extern void disable_builtin_function (const char *); |
7d14c755 | 761 | |
3b2db49f MM |
762 | extern void set_compound_literal_name (tree decl); |
763 | ||
35b1a6fa | 764 | extern tree build_va_arg (tree, tree); |
7e8176d7 | 765 | |
b86f6cd9 | 766 | extern unsigned int c_common_init_options (unsigned int, const char **); |
35b1a6fa AJ |
767 | extern bool c_common_post_options (const char **); |
768 | extern bool c_common_init (void); | |
769 | extern void c_common_finish (void); | |
770 | extern void c_common_parse_file (int); | |
4862826d | 771 | extern alias_set_type c_common_get_alias_set (tree); |
9649812a | 772 | extern void c_register_builtin_type (tree, const char*); |
58f9752a KG |
773 | extern bool c_promoting_integer_type_p (const_tree); |
774 | extern int self_promoting_args_p (const_tree); | |
12ea3302 | 775 | extern tree strip_pointer_operator (tree); |
ba992967 | 776 | extern tree strip_pointer_or_array_types (tree); |
c5ff069d | 777 | extern HOST_WIDE_INT c_common_to_target_charset (HOST_WIDE_INT); |
d7e7759d | 778 | |
d1bd0ded GK |
779 | /* This is the basic parsing function. */ |
780 | extern void c_parse_file (void); | |
781 | /* This is misnamed, it actually performs end-of-compilation processing. */ | |
782 | extern void finish_file (void); | |
783 | ||
c5ff069d | 784 | |
ae499cce MM |
785 | /* These macros provide convenient access to the various _STMT nodes. */ |
786 | ||
325c3691 RH |
787 | /* Nonzero if a given STATEMENT_LIST represents the outermost binding |
788 | if a statement expression. */ | |
789 | #define STATEMENT_LIST_STMT_EXPR(NODE) \ | |
790 | TREE_LANG_FLAG_1 (STATEMENT_LIST_CHECK (NODE)) | |
174283a3 RH |
791 | |
792 | /* Nonzero if a label has been added to the statement list. */ | |
793 | #define STATEMENT_LIST_HAS_LABEL(NODE) \ | |
794 | TREE_LANG_FLAG_3 (STATEMENT_LIST_CHECK (NODE)) | |
325c3691 | 795 | |
8d37a5c0 JM |
796 | /* COMPOUND_LITERAL_EXPR accessors. */ |
797 | #define COMPOUND_LITERAL_EXPR_DECL_STMT(NODE) \ | |
db3acfa5 | 798 | TREE_OPERAND (COMPOUND_LITERAL_EXPR_CHECK (NODE), 0) |
8d37a5c0 | 799 | #define COMPOUND_LITERAL_EXPR_DECL(NODE) \ |
350fae66 | 800 | DECL_EXPR_DECL (COMPOUND_LITERAL_EXPR_DECL_STMT (NODE)) |
db3acfa5 | 801 | |
0a7394bc MM |
802 | /* In a FIELD_DECL, nonzero if the decl was originally a bitfield. */ |
803 | #define DECL_C_BIT_FIELD(NODE) \ | |
804 | (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) == 1) | |
805 | #define SET_DECL_C_BIT_FIELD(NODE) \ | |
806 | (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 1) | |
807 | #define CLEAR_DECL_C_BIT_FIELD(NODE) \ | |
808 | (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 0) | |
809 | ||
35b1a6fa | 810 | extern void emit_local_var (tree); |
35b1a6fa AJ |
811 | extern tree do_case (tree, tree); |
812 | extern tree build_stmt (enum tree_code, ...); | |
813 | extern tree build_case_label (tree, tree, tree); | |
f2c5f623 | 814 | |
ab76ca54 MM |
815 | /* These functions must be defined by each front-end which implements |
816 | a variant of the C language. They are used in c-common.c. */ | |
817 | ||
c9f9eb5d | 818 | extern tree build_unary_op (location_t, enum tree_code, tree, int); |
ba47d38d | 819 | extern tree build_binary_op (location_t, enum tree_code, tree, tree, int); |
522ddfa2 | 820 | extern tree perform_integral_promotions (tree); |
ab76ca54 | 821 | |
d593cb3d MS |
822 | /* These functions must be defined by each front-end which implements |
823 | a variant of the C language. They are used by port files. */ | |
824 | ||
825 | extern tree default_conversion (tree); | |
826 | ||
ab76ca54 MM |
827 | /* Given two integer or real types, return the type for their sum. |
828 | Given two compatible ANSI C types, returns the merged type. */ | |
829 | ||
35b1a6fa | 830 | extern tree common_type (tree, tree); |
44835fdd | 831 | |
35b1a6fa | 832 | extern tree decl_constant_value (tree); |
56cb9733 | 833 | |
19552aa5 | 834 | /* Handle increment and decrement of boolean types. */ |
35b1a6fa | 835 | extern tree boolean_increment (enum tree_code, tree); |
19552aa5 | 836 | |
35b1a6fa | 837 | extern int case_compare (splay_tree_key, splay_tree_key); |
8f17b5c5 | 838 | |
a6c0a76c | 839 | extern tree c_add_case_label (splay_tree, tree, tree, tree, tree); |
8f17b5c5 | 840 | |
fbc315db | 841 | extern void c_do_switch_warnings (splay_tree, location_t, tree, tree); |
6de9cd9a | 842 | |
35b1a6fa | 843 | extern tree build_function_call (tree, tree); |
c70eaeaf | 844 | |
48ae6c13 RH |
845 | extern tree resolve_overloaded_builtin (tree, tree); |
846 | ||
6a3799eb | 847 | extern tree finish_label_address_expr (tree, location_t); |
15b732b2 NB |
848 | |
849 | /* Same function prototype, but the C and C++ front ends have | |
850 | different implementations. Used in c-common.c. */ | |
35b1a6fa | 851 | extern tree lookup_label (tree); |
10e6657a | 852 | extern tree lookup_name (tree); |
15b732b2 | 853 | |
f83c7f63 | 854 | extern bool vector_targets_convertible_p (const_tree t1, const_tree t2); |
58f9752a | 855 | extern bool vector_types_convertible_p (const_tree t1, const_tree t2, bool emit_lax_note); |
cc27e657 | 856 | |
0fab64a3 | 857 | extern rtx c_expand_expr (tree, rtx, enum machine_mode, int, rtx *); |
8f17b5c5 | 858 | |
270c60bb DB |
859 | extern tree c_staticp (tree); |
860 | ||
35b1a6fa | 861 | extern void init_c_lex (void); |
81a75f0f | 862 | |
35b1a6fa | 863 | extern void c_cpp_builtins (cpp_reader *); |
ab442df7 | 864 | extern void c_cpp_builtins_optimize_pragma (cpp_reader *, tree, tree); |
76c3e73e | 865 | |
731e8b38 MM |
866 | /* Positive if an implicit `extern "C"' scope has just been entered; |
867 | negative if such a scope has just been exited. */ | |
7876228d | 868 | extern GTY(()) int pending_lang_change; |
731e8b38 | 869 | |
0e5921e8 ZW |
870 | /* Information recorded about each file examined during compilation. */ |
871 | ||
872 | struct c_fileinfo | |
873 | { | |
874 | int time; /* Time spent in the file. */ | |
5d709b00 ZW |
875 | |
876 | /* Flags used only by C++. | |
877 | INTERFACE_ONLY nonzero means that we are in an "interface" section | |
878 | of the compiler. INTERFACE_UNKNOWN nonzero means we cannot trust | |
879 | the value of INTERFACE_ONLY. If INTERFACE_UNKNOWN is zero and | |
880 | INTERFACE_ONLY is zero, it means that we are responsible for | |
881 | exporting definitions that others might need. */ | |
882 | short interface_only; | |
0e5921e8 ZW |
883 | short interface_unknown; |
884 | }; | |
885 | ||
35b1a6fa AJ |
886 | struct c_fileinfo *get_fileinfo (const char *); |
887 | extern void dump_time_statistics (void); | |
888 | ||
889 | extern bool c_dump_tree (void *, tree); | |
890 | ||
726a989a | 891 | extern void c_warn_unused_result (gimple_seq); |
6de9cd9a | 892 | |
3a5b9284 RH |
893 | extern void verify_sequence_points (tree); |
894 | ||
6d4d7b0e | 895 | extern tree fold_offsetof (tree, tree); |
ee8a6a3e | 896 | |
5ae9ba3e | 897 | /* Places where an lvalue, or modifiable lvalue, may be required. |
37dc0d8d | 898 | Used to select diagnostic messages in lvalue_error and |
5ae9ba3e MM |
899 | readonly_error. */ |
900 | enum lvalue_use { | |
901 | lv_assign, | |
902 | lv_increment, | |
903 | lv_decrement, | |
904 | lv_addressof, | |
905 | lv_asm | |
906 | }; | |
907 | ||
37dc0d8d | 908 | extern void lvalue_error (enum lvalue_use); |
5ae9ba3e | 909 | |
aab038d5 RH |
910 | extern int complete_array_type (tree *, tree, bool); |
911 | ||
48ae6c13 RH |
912 | extern tree builtin_type_for_size (int, bool); |
913 | ||
ff6b6641 | 914 | extern void warn_array_subscript_with_type_char (tree); |
2a67bec2 ILT |
915 | extern void warn_about_parentheses (enum tree_code, enum tree_code, |
916 | enum tree_code); | |
c616e51b | 917 | extern void warn_for_unused_label (tree label); |
c9f9eb5d | 918 | extern void warn_for_div_by_zero (location_t, tree divisor); |
ba47d38d AH |
919 | extern void warn_for_sign_compare (location_t, |
920 | tree orig_op0, tree orig_op1, | |
2d12797c MLI |
921 | tree op0, tree op1, |
922 | tree result_type, | |
923 | enum tree_code resultcode); | |
2a67bec2 | 924 | |
7c34ced1 | 925 | /* In c-gimplify.c */ |
6de9cd9a | 926 | extern void c_genericize (tree); |
726a989a | 927 | extern int c_gimplify_expr (tree *, gimple_seq *, gimple_seq *); |
325c3691 | 928 | extern tree c_build_bind_expr (tree, tree); |
6de9cd9a | 929 | |
c0d578e6 | 930 | /* In c-pch.c */ |
35b1a6fa AJ |
931 | extern void pch_init (void); |
932 | extern int c_common_valid_pch (cpp_reader *pfile, const char *name, int fd); | |
933 | extern void c_common_read_pch (cpp_reader *pfile, const char *name, int fd, | |
934 | const char *orig); | |
935 | extern void c_common_write_pch (void); | |
18c81520 | 936 | extern void c_common_no_more_pch (void); |
bc4071dd | 937 | extern void c_common_pch_pragma (cpp_reader *pfile, const char *); |
3fd30b88 GK |
938 | extern void c_common_print_pch_checksum (FILE *f); |
939 | ||
940 | /* In *-checksum.c */ | |
941 | extern const unsigned char executable_checksum[16]; | |
c0d578e6 | 942 | |
ab442df7 MM |
943 | /* In c-cppbuiltin.c */ |
944 | extern void builtin_define_std (const char *macro); | |
35b1a6fa AJ |
945 | extern void builtin_define_with_value (const char *, const char *, int); |
946 | extern void c_stddef_cpp_builtins (void); | |
947 | extern void fe_file_change (const struct line_map *); | |
4bb8ca28 | 948 | extern void c_parse_error (const char *, enum cpp_ttype, tree); |
9d10c9a9 | 949 | |
e5a002e3 ZL |
950 | /* Objective-C / Objective-C++ entry points. */ |
951 | ||
952 | /* The following ObjC/ObjC++ functions are called by the C and/or C++ | |
953 | front-ends; they all must have corresponding stubs in stub-objc.c. */ | |
bc095846 | 954 | extern tree objc_is_class_name (tree); |
264fa2db ZL |
955 | extern tree objc_is_object_ptr (tree); |
956 | extern void objc_check_decl (tree); | |
e5a002e3 | 957 | extern int objc_is_reserved_word (tree); |
58393038 ZL |
958 | extern bool objc_compare_types (tree, tree, int, tree); |
959 | extern void objc_volatilize_decl (tree); | |
960 | extern bool objc_type_quals_match (tree, tree); | |
6e955430 | 961 | extern tree objc_rewrite_function_call (tree, tree); |
264fa2db | 962 | extern tree objc_message_selector (void); |
16b34ad6 | 963 | extern tree objc_lookup_ivar (tree, tree); |
325c3691 | 964 | extern void objc_clear_super_receiver (void); |
7a3ea201 | 965 | extern int objc_is_public (tree, tree); |
a45bcfb2 ZL |
966 | extern tree objc_is_id (tree); |
967 | extern void objc_declare_alias (tree, tree); | |
968 | extern void objc_declare_class (tree); | |
969 | extern void objc_declare_protocols (tree); | |
970 | extern tree objc_build_message_expr (tree); | |
971 | extern tree objc_finish_message_expr (tree, tree, tree); | |
972 | extern tree objc_build_selector_expr (tree); | |
973 | extern tree objc_build_protocol_expr (tree); | |
974 | extern tree objc_build_encode_expr (tree); | |
975 | extern tree objc_build_string_object (tree); | |
976 | extern tree objc_get_protocol_qualified_type (tree, tree); | |
977 | extern tree objc_get_class_reference (tree); | |
978 | extern tree objc_get_class_ivars (tree); | |
979 | extern void objc_start_class_interface (tree, tree, tree); | |
980 | extern void objc_start_category_interface (tree, tree, tree); | |
981 | extern void objc_start_protocol (tree, tree); | |
982 | extern void objc_continue_interface (void); | |
983 | extern void objc_finish_interface (void); | |
984 | extern void objc_start_class_implementation (tree, tree); | |
985 | extern void objc_start_category_implementation (tree, tree); | |
986 | extern void objc_continue_implementation (void); | |
987 | extern void objc_finish_implementation (void); | |
988 | extern void objc_set_visibility (int); | |
989 | extern void objc_set_method_type (enum tree_code); | |
dbb74365 | 990 | extern tree objc_build_method_signature (tree, tree, tree, bool); |
a45bcfb2 ZL |
991 | extern void objc_add_method_declaration (tree); |
992 | extern void objc_start_method_definition (tree); | |
993 | extern void objc_finish_method_definition (tree); | |
994 | extern void objc_add_instance_variable (tree); | |
995 | extern tree objc_build_keyword_decl (tree, tree, tree); | |
996 | extern tree objc_build_throw_stmt (tree); | |
997 | extern void objc_begin_try_stmt (location_t, tree); | |
6e955430 | 998 | extern tree objc_finish_try_stmt (void); |
a45bcfb2 ZL |
999 | extern void objc_begin_catch_clause (tree); |
1000 | extern void objc_finish_catch_clause (void); | |
1001 | extern void objc_build_finally_clause (location_t, tree); | |
6e955430 | 1002 | extern tree objc_build_synchronized (location_t, tree, tree); |
a45bcfb2 ZL |
1003 | extern int objc_static_init_needed_p (void); |
1004 | extern tree objc_generate_static_init_call (tree); | |
6e955430 | 1005 | extern tree objc_generate_write_barrier (tree, enum tree_code, tree); |
264fa2db | 1006 | |
e5a002e3 ZL |
1007 | /* The following are provided by the C and C++ front-ends, and called by |
1008 | ObjC/ObjC++. */ | |
bc095846 | 1009 | extern void *objc_get_current_scope (void); |
e5a002e3 ZL |
1010 | extern void objc_mark_locals_volatile (void *); |
1011 | ||
9d10c9a9 | 1012 | /* In c-ppoutput.c */ |
35b1a6fa AJ |
1013 | extern void init_pp_output (FILE *); |
1014 | extern void preprocess_file (cpp_reader *); | |
1015 | extern void pp_file_change (const struct line_map *); | |
8e9ea4d7 | 1016 | extern void pp_dir_change (cpp_reader *, const char *); |
104f8784 | 1017 | extern bool check_missing_format_attribute (tree, tree); |
17211ab5 | 1018 | |
953ff289 DN |
1019 | /* In c-omp.c */ |
1020 | extern tree c_finish_omp_master (tree); | |
1021 | extern tree c_finish_omp_critical (tree, tree); | |
1022 | extern tree c_finish_omp_ordered (tree); | |
1023 | extern void c_finish_omp_barrier (void); | |
fe89d797 | 1024 | extern tree c_finish_omp_atomic (enum tree_code, tree, tree); |
953ff289 | 1025 | extern void c_finish_omp_flush (void); |
a68ab351 | 1026 | extern void c_finish_omp_taskwait (void); |
953ff289 DN |
1027 | extern tree c_finish_omp_for (location_t, tree, tree, tree, tree, tree, tree); |
1028 | extern void c_split_parallel_clauses (tree, tree *, tree *); | |
1029 | extern enum omp_clause_default_kind c_omp_predetermined_sharing (tree); | |
1030 | ||
1031 | /* Not in c-omp.c; provided by the front end. */ | |
1032 | extern bool c_omp_sharing_predetermined (tree); | |
1033 | extern tree c_omp_remap_decl (tree, bool); | |
1034 | ||
ea40ba9c JM |
1035 | /* In order for the format checking to accept the C frontend |
1036 | diagnostic framework extensions, you must include this file before | |
1037 | toplev.h, not after. The C front end formats are a subset of those | |
1038 | for C++, so they are the appropriate set to use in common code; | |
1039 | cp-tree.h overrides this for C++. */ | |
1040 | #ifndef GCC_DIAG_STYLE | |
1041 | #define GCC_DIAG_STYLE __gcc_cdiag__ | |
1042 | #endif | |
1043 | ||
88657302 | 1044 | #endif /* ! GCC_C_COMMON_H */ |