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7f4edbcb | 1 | /* Definitions for c-common.c. |
517cbe13 | 2 | Copyright (C) 1987, 1993, 1994, 1995, 1997, 1998, |
1574ef13 | 3 | 1999, 2000, 2001, 2002 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 | |
9 | Software Foundation; either version 2, or (at your option) any later | |
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 | |
1322177d LB |
18 | along with GCC; see the file COPYING. If not, write to the Free |
19 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
20 | 02111-1307, USA. */ | |
7f4edbcb | 21 | |
0e5921e8 ZW |
22 | #ifndef GCC_C_COMMON_H |
23 | #define GCC_C_COMMON_H | |
24 | ||
8f17b5c5 | 25 | #include "splay-tree.h" |
2a967f3d | 26 | #include "cpplib.h" |
8f17b5c5 | 27 | |
f2c5f623 BC |
28 | /* Usage of TREE_LANG_FLAG_?: |
29 | 0: COMPOUND_STMT_NO_SCOPE (in COMPOUND_STMT). | |
30 | TREE_NEGATED_INT (in INTEGER_CST). | |
31 | IDENTIFIER_MARKED (used by search routines). | |
32 | SCOPE_BEGIN_P (in SCOPE_STMT) | |
33 | DECL_PRETTY_FUNCTION_P (in VAR_DECL) | |
34 | NEW_FOR_SCOPE_P (in FOR_STMT) | |
4f78b9a8 | 35 | ASM_INPUT_P (in ASM_STMT) |
b2123dc0 | 36 | STMT_EXPR_NO_SCOPE (in STMT_EXPR) |
f2c5f623 BC |
37 | 1: C_DECLARED_LABEL_FLAG (in LABEL_DECL) |
38 | STMT_IS_FULL_EXPR_P (in _STMT) | |
39 | 2: STMT_LINENO_FOR_FN_P (in _STMT) | |
40 | 3: SCOPE_NO_CLEANUPS_P (in SCOPE_STMT) | |
ade3dc07 | 41 | COMPOUND_STMT_BODY_BLOCK (in COMPOUND_STMT) |
f2c5f623 BC |
42 | 4: SCOPE_PARTIAL_P (in SCOPE_STMT) |
43 | */ | |
44 | ||
0e5921e8 ZW |
45 | /* Reserved identifiers. This is the union of all the keywords for C, |
46 | C++, and Objective C. All the type modifiers have to be in one | |
47 | block at the beginning, because they are used as mask bits. There | |
48 | are 27 type modifiers; if we add many more we will have to redesign | |
49 | the mask mechanism. */ | |
f09f1de5 MM |
50 | |
51 | enum rid | |
52 | { | |
0e5921e8 | 53 | /* Modifiers: */ |
2ba84f36 | 54 | /* C, in empirical order of frequency. */ |
0e5921e8 ZW |
55 | RID_STATIC = 0, |
56 | RID_UNSIGNED, RID_LONG, RID_CONST, RID_EXTERN, | |
57 | RID_REGISTER, RID_TYPEDEF, RID_SHORT, RID_INLINE, | |
58 | RID_VOLATILE, RID_SIGNED, RID_AUTO, RID_RESTRICT, | |
59 | ||
60 | /* C extensions */ | |
3d78f2e9 | 61 | RID_BOUNDED, RID_UNBOUNDED, RID_COMPLEX, RID_THREAD, |
0e5921e8 ZW |
62 | |
63 | /* C++ */ | |
64 | RID_FRIEND, RID_VIRTUAL, RID_EXPLICIT, RID_EXPORT, RID_MUTABLE, | |
65 | ||
66 | /* ObjC */ | |
b8363a24 | 67 | RID_IN, RID_OUT, RID_INOUT, RID_BYCOPY, RID_BYREF, RID_ONEWAY, |
0e5921e8 ZW |
68 | |
69 | /* C */ | |
70 | RID_INT, RID_CHAR, RID_FLOAT, RID_DOUBLE, RID_VOID, | |
71 | RID_ENUM, RID_STRUCT, RID_UNION, RID_IF, RID_ELSE, | |
72 | RID_WHILE, RID_DO, RID_FOR, RID_SWITCH, RID_CASE, | |
73 | RID_DEFAULT, RID_BREAK, RID_CONTINUE, RID_RETURN, RID_GOTO, | |
74 | RID_SIZEOF, | |
75 | ||
76 | /* C extensions */ | |
77 | RID_ASM, RID_TYPEOF, RID_ALIGNOF, RID_ATTRIBUTE, RID_VA_ARG, | |
78 | RID_EXTENSION, RID_IMAGPART, RID_REALPART, RID_LABEL, RID_PTRBASE, | |
ecbcf7b3 | 79 | RID_PTREXTENT, RID_PTRVALUE, RID_CHOOSE_EXPR, RID_TYPES_COMPATIBLE_P, |
0e5921e8 | 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, | |
89 | RID_NEW, RID_OPERATOR, RID_THIS, | |
90 | RID_THROW, RID_TRUE, RID_TRY, | |
91 | RID_TYPENAME, RID_TYPEID, RID_USING, | |
92 | ||
93 | /* casts */ | |
94 | RID_CONSTCAST, RID_DYNCAST, RID_REINTCAST, RID_STATCAST, | |
95 | ||
0e5921e8 ZW |
96 | /* Objective C */ |
97 | RID_ID, RID_AT_ENCODE, RID_AT_END, | |
98 | RID_AT_CLASS, RID_AT_ALIAS, RID_AT_DEFS, | |
99 | RID_AT_PRIVATE, RID_AT_PROTECTED, RID_AT_PUBLIC, | |
100 | RID_AT_PROTOCOL, RID_AT_SELECTOR, RID_AT_INTERFACE, | |
101 | RID_AT_IMPLEMENTATION, | |
102 | ||
103 | RID_MAX, | |
104 | ||
105 | RID_FIRST_MODIFIER = RID_STATIC, | |
b8363a24 ZW |
106 | RID_LAST_MODIFIER = RID_ONEWAY, |
107 | ||
108 | RID_FIRST_AT = RID_AT_ENCODE, | |
109 | RID_LAST_AT = RID_AT_IMPLEMENTATION, | |
110 | RID_FIRST_PQ = RID_IN, | |
111 | RID_LAST_PQ = RID_ONEWAY | |
f09f1de5 MM |
112 | }; |
113 | ||
b8363a24 ZW |
114 | #define OBJC_IS_AT_KEYWORD(rid) \ |
115 | ((unsigned int)(rid) >= (unsigned int)RID_FIRST_AT && \ | |
116 | (unsigned int)(rid) <= (unsigned int)RID_LAST_AT) | |
117 | ||
118 | #define OBJC_IS_PQ_KEYWORD(rid) \ | |
119 | ((unsigned int)(rid) >= (unsigned int)RID_FIRST_PQ && \ | |
120 | (unsigned int)(rid) <= (unsigned int)RID_LAST_PQ) | |
121 | ||
f09f1de5 MM |
122 | /* The elements of `ridpointers' are identifier nodes for the reserved |
123 | type names and storage classes. It is indexed by a RID_... value. */ | |
124 | extern tree *ridpointers; | |
125 | ||
7f4edbcb BS |
126 | /* Standard named or nameless data types of the C compiler. */ |
127 | ||
128 | enum c_tree_index | |
129 | { | |
7f4edbcb BS |
130 | CTI_WCHAR_TYPE, |
131 | CTI_SIGNED_WCHAR_TYPE, | |
132 | CTI_UNSIGNED_WCHAR_TYPE, | |
c5ab7f91 | 133 | CTI_WINT_TYPE, |
fe8ca71f JM |
134 | CTI_C_SIZE_TYPE, /* The type used for the size_t typedef and the |
135 | result type of sizeof (an ordinary type without | |
136 | TYPE_IS_SIZETYPE set, unlike the internal | |
137 | sizetype). */ | |
cd732418 JM |
138 | CTI_SIGNED_SIZE_TYPE, /* For format checking only. */ |
139 | CTI_UNSIGNED_PTRDIFF_TYPE, /* For format checking only. */ | |
b15ad712 JM |
140 | CTI_INTMAX_TYPE, |
141 | CTI_UINTMAX_TYPE, | |
7f4edbcb BS |
142 | CTI_WIDEST_INT_LIT_TYPE, |
143 | CTI_WIDEST_UINT_LIT_TYPE, | |
144 | ||
7f4edbcb BS |
145 | CTI_CHAR_ARRAY_TYPE, |
146 | CTI_WCHAR_ARRAY_TYPE, | |
147 | CTI_INT_ARRAY_TYPE, | |
148 | CTI_STRING_TYPE, | |
149 | CTI_CONST_STRING_TYPE, | |
150 | ||
19552aa5 | 151 | /* Type for boolean expressions (bool in C++, int in C). */ |
7f4edbcb BS |
152 | CTI_BOOLEAN_TYPE, |
153 | CTI_BOOLEAN_TRUE, | |
154 | CTI_BOOLEAN_FALSE, | |
19552aa5 JM |
155 | /* C99's _Bool type. */ |
156 | CTI_C_BOOL_TYPE, | |
157 | CTI_C_BOOL_TRUE, | |
158 | CTI_C_BOOL_FALSE, | |
7f4edbcb | 159 | CTI_DEFAULT_FUNCTION_TYPE, |
7f4edbcb | 160 | |
7aba5a5f CD |
161 | CTI_G77_INTEGER_TYPE, |
162 | CTI_G77_UINTEGER_TYPE, | |
163 | CTI_G77_LONGINT_TYPE, | |
164 | CTI_G77_ULONGINT_TYPE, | |
165 | ||
2ba84f36 | 166 | /* These are not types, but we have to look them up all the time. */ |
0ba8a114 NS |
167 | CTI_FUNCTION_NAME_DECL, |
168 | CTI_PRETTY_FUNCTION_NAME_DECL, | |
169 | CTI_C99_FUNCTION_NAME_DECL, | |
170 | CTI_SAVED_FUNCTION_NAME_DECLS, | |
171 | ||
ae499cce MM |
172 | CTI_VOID_ZERO, |
173 | ||
7f4edbcb BS |
174 | CTI_MAX |
175 | }; | |
176 | ||
b621a4dd | 177 | #define C_RID_CODE(id) (((struct c_common_identifier *) (id))->node.rid_code) |
2a967f3d NB |
178 | |
179 | /* Identifier part common to the C front ends. Inherits from | |
180 | tree_identifier, despite appearances. */ | |
e2500fed | 181 | struct c_common_identifier GTY(()) |
2a967f3d NB |
182 | { |
183 | struct tree_common common; | |
e2500fed | 184 | struct cpp_hashnode GTY ((skip (""))) node; |
2a967f3d NB |
185 | }; |
186 | ||
7f4edbcb BS |
187 | #define wchar_type_node c_global_trees[CTI_WCHAR_TYPE] |
188 | #define signed_wchar_type_node c_global_trees[CTI_SIGNED_WCHAR_TYPE] | |
189 | #define unsigned_wchar_type_node c_global_trees[CTI_UNSIGNED_WCHAR_TYPE] | |
c5ab7f91 | 190 | #define wint_type_node c_global_trees[CTI_WINT_TYPE] |
3c786c69 | 191 | #define c_size_type_node c_global_trees[CTI_C_SIZE_TYPE] |
cd732418 JM |
192 | #define signed_size_type_node c_global_trees[CTI_SIGNED_SIZE_TYPE] |
193 | #define unsigned_ptrdiff_type_node c_global_trees[CTI_UNSIGNED_PTRDIFF_TYPE] | |
b15ad712 JM |
194 | #define intmax_type_node c_global_trees[CTI_INTMAX_TYPE] |
195 | #define uintmax_type_node c_global_trees[CTI_UINTMAX_TYPE] | |
7f4edbcb BS |
196 | #define widest_integer_literal_type_node c_global_trees[CTI_WIDEST_INT_LIT_TYPE] |
197 | #define widest_unsigned_literal_type_node c_global_trees[CTI_WIDEST_UINT_LIT_TYPE] | |
198 | ||
7f4edbcb BS |
199 | #define boolean_type_node c_global_trees[CTI_BOOLEAN_TYPE] |
200 | #define boolean_true_node c_global_trees[CTI_BOOLEAN_TRUE] | |
201 | #define boolean_false_node c_global_trees[CTI_BOOLEAN_FALSE] | |
202 | ||
19552aa5 JM |
203 | #define c_bool_type_node c_global_trees[CTI_C_BOOL_TYPE] |
204 | #define c_bool_true_node c_global_trees[CTI_C_BOOL_TRUE] | |
205 | #define c_bool_false_node c_global_trees[CTI_C_BOOL_FALSE] | |
206 | ||
7f4edbcb BS |
207 | #define char_array_type_node c_global_trees[CTI_CHAR_ARRAY_TYPE] |
208 | #define wchar_array_type_node c_global_trees[CTI_WCHAR_ARRAY_TYPE] | |
209 | #define int_array_type_node c_global_trees[CTI_INT_ARRAY_TYPE] | |
210 | #define string_type_node c_global_trees[CTI_STRING_TYPE] | |
211 | #define const_string_type_node c_global_trees[CTI_CONST_STRING_TYPE] | |
212 | ||
213 | #define default_function_type c_global_trees[CTI_DEFAULT_FUNCTION_TYPE] | |
7f4edbcb | 214 | |
7aba5a5f CD |
215 | /* g77 integer types, which which must be kept in sync with f/com.h */ |
216 | #define g77_integer_type_node c_global_trees[CTI_G77_INTEGER_TYPE] | |
217 | #define g77_uinteger_type_node c_global_trees[CTI_G77_UINTEGER_TYPE] | |
218 | #define g77_longint_type_node c_global_trees[CTI_G77_LONGINT_TYPE] | |
219 | #define g77_ulongint_type_node c_global_trees[CTI_G77_ULONGINT_TYPE] | |
220 | ||
0ba8a114 NS |
221 | #define function_name_decl_node c_global_trees[CTI_FUNCTION_NAME_DECL] |
222 | #define pretty_function_name_decl_node c_global_trees[CTI_PRETTY_FUNCTION_NAME_DECL] | |
223 | #define c99_function_name_decl_node c_global_trees[CTI_C99_FUNCTION_NAME_DECL] | |
224 | #define saved_function_name_decls c_global_trees[CTI_SAVED_FUNCTION_NAME_DECLS] | |
63ad61ed | 225 | |
ae499cce MM |
226 | /* A node for `((void) 0)'. */ |
227 | #define void_zero_node c_global_trees[CTI_VOID_ZERO] | |
228 | ||
e2500fed | 229 | extern GTY(()) tree c_global_trees[CTI_MAX]; |
ab76ca54 | 230 | |
8f17b5c5 MM |
231 | /* Mark which labels are explicitly declared. |
232 | These may be shadowed, and may be referenced from nested functions. */ | |
233 | #define C_DECLARED_LABEL_FLAG(label) TREE_LANG_FLAG_1 (label) | |
234 | ||
9aa8a1df NB |
235 | /* Flag strings given by __FUNCTION__ and __PRETTY_FUNCTION__ for a |
236 | warning if they undergo concatenation. */ | |
237 | #define C_ARTIFICIAL_STRING_P(NODE) TREE_LANG_FLAG_0 (NODE) | |
238 | ||
ab76ca54 MM |
239 | typedef enum c_language_kind |
240 | { | |
b4a93904 | 241 | clk_c = 0, /* A dialect of C: K&R C, ANSI/ISO C89, C2000, etc. */ |
0f7866e7 | 242 | clk_cplusplus /* ANSI/ISO C++ */ |
21c7361e | 243 | } |
ab76ca54 MM |
244 | c_language_kind; |
245 | ||
ae499cce MM |
246 | /* Information about a statement tree. */ |
247 | ||
e2500fed | 248 | struct stmt_tree_s GTY(()) { |
ae499cce MM |
249 | /* The last statement added to the tree. */ |
250 | tree x_last_stmt; | |
251 | /* The type of the last expression statement. (This information is | |
252 | needed to implement the statement-expression extension.) */ | |
253 | tree x_last_expr_type; | |
de097a2d JM |
254 | /* The last filename we recorded. */ |
255 | const char *x_last_expr_filename; | |
ae499cce MM |
256 | /* In C++, Non-zero if we should treat statements as full |
257 | expressions. In particular, this variable is no-zero if at the | |
258 | end of a statement we should destroy any temporaries created | |
259 | during that statement. Similarly, if, at the end of a block, we | |
260 | should destroy any local variables in this block. Normally, this | |
261 | variable is non-zero, since those are the normal semantics of | |
262 | C++. | |
263 | ||
264 | However, in order to represent aggregate initialization code as | |
265 | tree structure, we use statement-expressions. The statements | |
266 | within the statement expression should not result in cleanups | |
21c7361e | 267 | being run until the entire enclosing statement is complete. |
ae499cce MM |
268 | |
269 | This flag has no effect in C. */ | |
21c7361e | 270 | int stmts_are_full_exprs_p; |
ae499cce MM |
271 | }; |
272 | ||
273 | typedef struct stmt_tree_s *stmt_tree; | |
274 | ||
275 | /* Global state pertinent to the current function. Some C dialects | |
276 | extend this structure with additional fields. */ | |
277 | ||
e2500fed | 278 | struct c_language_function GTY(()) { |
ae499cce MM |
279 | /* While we are parsing the function, this contains information |
280 | about the statement-tree that we are building. */ | |
281 | struct stmt_tree_s x_stmt_tree; | |
8f17b5c5 MM |
282 | /* The stack of SCOPE_STMTs for the current function. */ |
283 | tree x_scope_stmt_stack; | |
ae499cce MM |
284 | }; |
285 | ||
286 | /* When building a statement-tree, this is the last statement added to | |
287 | the tree. */ | |
288 | ||
289 | #define last_tree (current_stmt_tree ()->x_last_stmt) | |
290 | ||
291 | /* The type of the last expression-statement we have seen. */ | |
292 | ||
293 | #define last_expr_type (current_stmt_tree ()->x_last_expr_type) | |
294 | ||
de097a2d JM |
295 | /* The name of the last file we have seen. */ |
296 | ||
297 | #define last_expr_filename (current_stmt_tree ()->x_last_expr_filename) | |
298 | ||
8f17b5c5 MM |
299 | /* LAST_TREE contains the last statement parsed. These are chained |
300 | together through the TREE_CHAIN field, but often need to be | |
301 | re-organized since the parse is performed bottom-up. This macro | |
302 | makes LAST_TREE the indicated SUBSTMT of STMT. */ | |
303 | ||
304 | #define RECHAIN_STMTS(stmt, substmt) \ | |
305 | do { \ | |
306 | substmt = TREE_CHAIN (stmt); \ | |
307 | TREE_CHAIN (stmt) = NULL_TREE; \ | |
308 | last_tree = stmt; \ | |
309 | } while (0) | |
310 | ||
311 | /* Language-specific hooks. */ | |
312 | ||
313 | extern int (*lang_statement_code_p) PARAMS ((enum tree_code)); | |
314 | extern void (*lang_expand_stmt) PARAMS ((tree)); | |
315 | extern void (*lang_expand_decl_stmt) PARAMS ((tree)); | |
316 | extern void (*lang_expand_function_end) PARAMS ((void)); | |
43577e6b | 317 | extern tree gettags PARAMS ((void)); |
8f17b5c5 | 318 | |
21c7361e AJ |
319 | /* Callback that determines if it's ok for a function to have no |
320 | noreturn attribute. */ | |
321 | extern int (*lang_missing_noreturn_ok_p) PARAMS ((tree)); | |
322 | ||
52dabb6c | 323 | extern int yyparse PARAMS ((void)); |
94a50397 RH |
324 | extern void free_parser_stacks PARAMS ((void)); |
325 | ||
ae499cce | 326 | extern stmt_tree current_stmt_tree PARAMS ((void)); |
8f17b5c5 | 327 | extern tree *current_scope_stmt_stack PARAMS ((void)); |
ae499cce | 328 | extern void begin_stmt_tree PARAMS ((tree *)); |
56cb9733 | 329 | extern tree add_stmt PARAMS ((tree)); |
8f17b5c5 MM |
330 | extern void add_decl_stmt PARAMS ((tree)); |
331 | extern tree add_scope_stmt PARAMS ((int, int)); | |
ae499cce MM |
332 | extern void finish_stmt_tree PARAMS ((tree *)); |
333 | ||
334 | extern int statement_code_p PARAMS ((enum tree_code)); | |
ae499cce MM |
335 | extern tree walk_stmt_tree PARAMS ((tree *, |
336 | walk_tree_fn, | |
337 | void *)); | |
54f7877c | 338 | extern void prep_stmt PARAMS ((tree)); |
54f7877c | 339 | extern void expand_stmt PARAMS ((tree)); |
26f943fd NB |
340 | extern void shadow_warning PARAMS ((const char *, |
341 | tree, tree)); | |
c1e14513 JL |
342 | extern tree c_begin_if_stmt PARAMS ((void)); |
343 | extern tree c_begin_while_stmt PARAMS ((void)); | |
344 | extern void c_finish_while_stmt_cond PARAMS ((tree, tree)); | |
345 | ||
ae499cce | 346 | |
8f17b5c5 MM |
347 | /* Extra information associated with a DECL. Other C dialects extend |
348 | this structure in various ways. The C front-end only uses this | |
349 | structure for FUNCTION_DECLs; all other DECLs have a NULL | |
350 | DECL_LANG_SPECIFIC field. */ | |
56cb9733 | 351 | |
e2500fed | 352 | struct c_lang_decl GTY(()) { |
31ed8fea | 353 | unsigned declared_inline : 1; |
8f17b5c5 MM |
354 | }; |
355 | ||
b850de4f MM |
356 | /* In a FUNCTION_DECL for which DECL_BUILT_IN does not hold, this is |
357 | the approximate number of statements in this function. There is | |
358 | no need for this number to be exact; it is only used in various | |
359 | heuristics regarding optimization. */ | |
360 | #define DECL_NUM_STMTS(NODE) \ | |
361 | (FUNCTION_DECL_CHECK (NODE)->decl.u1.i) | |
8f17b5c5 | 362 | |
ab76ca54 MM |
363 | /* The variant of the C language being processed. Each C language |
364 | front-end defines this variable. */ | |
365 | ||
366 | extern c_language_kind c_language; | |
367 | ||
4078b403 NB |
368 | /* Switches common to the C front ends. */ |
369 | ||
aaf93206 NB |
370 | /* Nonzero if prepreprocessing only. */ |
371 | extern int flag_preprocess_only; | |
372 | ||
3df89291 NB |
373 | /* Nonzero if an ISO standard was selected. It rejects macros in the |
374 | user's namespace. */ | |
375 | extern int flag_iso; | |
376 | ||
0f7866e7 ZL |
377 | /* Nonzero whenever Objective-C functionality is being used. */ |
378 | extern int flag_objc; | |
379 | ||
3df89291 NB |
380 | /* Nonzero if -undef was given. It suppresses target built-in macros |
381 | and assertions. */ | |
382 | extern int flag_undef; | |
383 | ||
4078b403 | 384 | /* Nonzero means don't recognize the non-ANSI builtin functions. */ |
ab76ca54 | 385 | |
4078b403 NB |
386 | extern int flag_no_builtin; |
387 | ||
388 | /* Nonzero means don't recognize the non-ANSI builtin functions. | |
389 | -ansi sets this. */ | |
390 | ||
391 | extern int flag_no_nonansi_builtin; | |
ab76ca54 | 392 | |
eaa7c03f JM |
393 | /* Nonzero means give `double' the same size as `float'. */ |
394 | ||
395 | extern int flag_short_double; | |
396 | ||
397 | /* Nonzero means give `wchar_t' the same size as `short'. */ | |
398 | ||
399 | extern int flag_short_wchar; | |
400 | ||
750491fc RH |
401 | /* Nonzero means allow Microsoft extensions without warnings or errors. */ |
402 | extern int flag_ms_extensions; | |
403 | ||
4078b403 NB |
404 | /* Nonzero means don't recognize the keyword `asm'. */ |
405 | ||
406 | extern int flag_no_asm; | |
407 | ||
408 | /* Nonzero means give string constants the type `const char *', as mandated | |
409 | by the standard. */ | |
410 | ||
411 | extern int flag_const_strings; | |
412 | ||
413 | /* Nonzero means `$' can be in an identifier. */ | |
414 | ||
415 | extern int dollars_in_ident; | |
416 | ||
417 | /* Nonzero means to treat bitfields as signed unless they say `unsigned'. */ | |
418 | ||
419 | extern int flag_signed_bitfields; | |
420 | extern int explicit_flag_signed_bitfields; | |
421 | ||
422 | /* Nonzero means warn about pointer casts that can drop a type qualifier | |
423 | from the pointer target type. */ | |
424 | ||
425 | extern int warn_cast_qual; | |
426 | ||
427 | /* Warn about functions which might be candidates for format attributes. */ | |
428 | ||
429 | extern int warn_missing_format_attribute; | |
430 | ||
431 | /* Nonzero means warn about sizeof(function) or addition/subtraction | |
432 | of function pointers. */ | |
433 | ||
434 | extern int warn_pointer_arith; | |
435 | ||
436 | /* Nonzero means warn for any global function def | |
437 | without separate previous prototype decl. */ | |
438 | ||
439 | extern int warn_missing_prototypes; | |
440 | ||
441 | /* Warn if adding () is suggested. */ | |
442 | ||
443 | extern int warn_parentheses; | |
444 | ||
445 | /* Warn if initializer is not completely bracketed. */ | |
446 | ||
447 | extern int warn_missing_braces; | |
448 | ||
449 | /* Warn about comparison of signed and unsigned values. | |
450 | If -1, neither -Wsign-compare nor -Wno-sign-compare has been specified. */ | |
451 | ||
452 | extern int warn_sign_compare; | |
453 | ||
454 | /* Nonzero means warn about usage of long long when `-pedantic'. */ | |
455 | ||
456 | extern int warn_long_long; | |
457 | ||
458 | /* Nonzero means warn about deprecated conversion from string constant to | |
459 | `char *'. */ | |
460 | ||
461 | extern int warn_write_strings; | |
462 | ||
463 | /* Nonzero means warn about multiple (redundant) decls for the same single | |
464 | variable or function. */ | |
465 | ||
466 | extern int warn_redundant_decls; | |
467 | ||
4b7e68e7 | 468 | /* Warn about testing equality of floating point numbers. */ |
4078b403 NB |
469 | |
470 | extern int warn_float_equal; | |
471 | ||
472 | /* Warn about a subscript that has type char. */ | |
473 | ||
474 | extern int warn_char_subscripts; | |
475 | ||
476 | /* Warn if a type conversion is done that might have confusing results. */ | |
477 | ||
478 | extern int warn_conversion; | |
479 | ||
480 | /* Warn about #pragma directives that are not recognised. */ | |
481 | ||
482 | extern int warn_unknown_pragmas; /* Tri state variable. */ | |
483 | ||
4078b403 NB |
484 | /* Warn about format/argument anomalies in calls to formatted I/O functions |
485 | (*printf, *scanf, strftime, strfmon, etc.). */ | |
ab76ca54 MM |
486 | |
487 | extern int warn_format; | |
488 | ||
4d808927 JM |
489 | /* Warn about Y2K problems with strftime formats. */ |
490 | ||
491 | extern int warn_format_y2k; | |
492 | ||
493 | /* Warn about excess arguments to formats. */ | |
494 | ||
495 | extern int warn_format_extra_args; | |
496 | ||
e964a556 JT |
497 | /* Warn about zero-length formats. */ |
498 | ||
499 | extern int warn_format_zero_length; | |
500 | ||
4d808927 JM |
501 | /* Warn about non-literal format arguments. */ |
502 | ||
503 | extern int warn_format_nonliteral; | |
504 | ||
c907e684 JM |
505 | /* Warn about possible security problems with calls to format functions. */ |
506 | ||
507 | extern int warn_format_security; | |
508 | ||
b34c7881 | 509 | |
4078b403 | 510 | /* C/ObjC language option variables. */ |
b34c7881 | 511 | |
2683ed8d | 512 | |
4078b403 NB |
513 | /* Nonzero means message about use of implicit function declarations; |
514 | 1 means warning; 2 means error. */ | |
2683ed8d | 515 | |
4078b403 | 516 | extern int mesg_implicit_function_declaration; |
74ff4629 | 517 | |
4078b403 NB |
518 | /* Nonzero means allow type mismatches in conditional expressions; |
519 | just make their values `void'. */ | |
74ff4629 | 520 | |
4078b403 | 521 | extern int flag_cond_mismatch; |
6c36d76b | 522 | |
eaf299c6 | 523 | /* Nonzero means enable C89 Amendment 1 features. */ |
b8458e3e JM |
524 | |
525 | extern int flag_isoc94; | |
526 | ||
ab76ca54 MM |
527 | /* Nonzero means use the ISO C99 dialect of C. */ |
528 | ||
529 | extern int flag_isoc99; | |
530 | ||
4078b403 | 531 | /* Nonzero means that we have builtin functions, and main is an int */ |
93e2382f JM |
532 | |
533 | extern int flag_hosted; | |
534 | ||
535 | /* Nonzero means add default format_arg attributes for functions not | |
536 | in ISO C. */ | |
537 | ||
538 | extern int flag_noniso_default_format_attributes; | |
539 | ||
4078b403 NB |
540 | /* Nonzero means warn when casting a function call to a type that does |
541 | not match the return type (e.g. (float)sqrt() or (anything*)malloc() | |
542 | when there is no previous declaration of sqrt or malloc. */ | |
6bcedb4e | 543 | |
4078b403 | 544 | extern int warn_bad_function_cast; |
6bcedb4e | 545 | |
4078b403 | 546 | /* Warn about traditional constructs whose meanings changed in ANSI C. */ |
6bcedb4e | 547 | |
4078b403 | 548 | extern int warn_traditional; |
6bcedb4e | 549 | |
4078b403 NB |
550 | /* Nonzero means warn for non-prototype function decls |
551 | or non-prototyped defs without previous prototype. */ | |
ab76ca54 | 552 | |
4078b403 | 553 | extern int warn_strict_prototypes; |
ab76ca54 | 554 | |
4078b403 NB |
555 | /* Nonzero means warn for any global function def |
556 | without separate previous decl. */ | |
557 | ||
558 | extern int warn_missing_declarations; | |
559 | ||
560 | /* Nonzero means warn about extern declarations of objects not at | |
561 | file-scope level and about *all* declarations of functions (whether | |
562 | extern or static) not at file-scope level. Note that we exclude | |
563 | implicit function declarations. To get warnings about those, use | |
564 | -Wimplicit. */ | |
565 | ||
566 | extern int warn_nested_externs; | |
567 | ||
568 | /* Warn if main is suspicious. */ | |
569 | ||
570 | extern int warn_main; | |
571 | ||
572 | /* Nonzero means warn about possible violations of sequence point rules. */ | |
573 | ||
574 | extern int warn_sequence_point; | |
575 | ||
576 | /* Nonzero means to warn about compile-time division by zero. */ | |
577 | extern int warn_div_by_zero; | |
578 | ||
579 | /* Nonzero means warn about use of implicit int. */ | |
580 | ||
581 | extern int warn_implicit_int; | |
582 | ||
583 | /* Warn about NULL being passed to argument slots marked as requiring | |
584 | non-NULL. */ | |
585 | ||
586 | extern int warn_nonnull; | |
587 | ||
588 | ||
589 | /* ObjC language option variables. */ | |
590 | ||
591 | ||
592 | /* Open and close the file for outputting class declarations, if | |
593 | requested (ObjC). */ | |
594 | ||
595 | extern int flag_gen_declaration; | |
596 | ||
597 | /* Generate code for GNU or NeXT runtime environment. */ | |
598 | ||
599 | extern int flag_next_runtime; | |
600 | ||
601 | /* Tells the compiler that this is a special run. Do not perform any | |
602 | compiling, instead we are to test some platform dependent features | |
603 | and output a C header file with appropriate definitions. */ | |
604 | ||
605 | extern int print_struct_values; | |
606 | ||
607 | /* ???. Undocumented. */ | |
608 | ||
fd350d24 | 609 | extern const char *constant_string_class_name; |
4078b403 NB |
610 | |
611 | /* Warn if multiple methods are seen for the same selector, but with | |
ece4ce85 NP |
612 | different argument types. Performs the check on the whole selector |
613 | table at the end of compilation. */ | |
4078b403 NB |
614 | |
615 | extern int warn_selector; | |
616 | ||
ece4ce85 NP |
617 | /* Warn if a @selector() is found, and no method with that selector |
618 | has been previously declared. The check is done on each | |
619 | @selector() as soon as it is found - so it warns about forward | |
620 | declarations. */ | |
621 | ||
622 | extern int warn_undeclared_selector; | |
623 | ||
4078b403 NB |
624 | /* Warn if methods required by a protocol are not implemented in the |
625 | class adopting it. When turned off, methods inherited to that | |
626 | class are also considered implemented. */ | |
627 | ||
628 | extern int warn_protocol; | |
629 | ||
630 | ||
631 | /* C++ language option variables. */ | |
632 | ||
633 | ||
634 | /* Nonzero means don't recognize any extension keywords. */ | |
635 | ||
636 | extern int flag_no_gnu_keywords; | |
637 | ||
638 | /* Nonzero means do emit exported implementations of functions even if | |
639 | they can be inlined. */ | |
640 | ||
641 | extern int flag_implement_inlines; | |
642 | ||
643 | /* Nonzero means do emit exported implementations of templates, instead of | |
644 | multiple static copies in each file that needs a definition. */ | |
645 | ||
646 | extern int flag_external_templates; | |
647 | ||
648 | /* Nonzero means that the decision to emit or not emit the implementation of a | |
649 | template depends on where the template is instantiated, rather than where | |
650 | it is defined. */ | |
651 | ||
652 | extern int flag_alt_external_templates; | |
653 | ||
654 | /* Nonzero means that implicit instantiations will be emitted if needed. */ | |
655 | ||
656 | extern int flag_implicit_templates; | |
657 | ||
658 | /* Nonzero means that implicit instantiations of inline templates will be | |
659 | emitted if needed, even if instantiations of non-inline templates | |
660 | aren't. */ | |
661 | ||
662 | extern int flag_implicit_inline_templates; | |
663 | ||
664 | /* Nonzero means generate separate instantiation control files and | |
665 | juggle them at link time. */ | |
666 | ||
667 | extern int flag_use_repository; | |
668 | ||
669 | /* Nonzero if we want to issue diagnostics that the standard says are not | |
670 | required. */ | |
671 | ||
672 | extern int flag_optional_diags; | |
673 | ||
674 | /* Nonzero means we should attempt to elide constructors when possible. */ | |
675 | ||
676 | extern int flag_elide_constructors; | |
677 | ||
678 | /* Nonzero means that member functions defined in class scope are | |
679 | inline by default. */ | |
680 | ||
681 | extern int flag_default_inline; | |
682 | ||
683 | /* Controls whether compiler generates 'type descriptor' that give | |
684 | run-time type information. */ | |
685 | ||
686 | extern int flag_rtti; | |
687 | ||
688 | /* Nonzero if we want to conserve space in the .o files. We do this | |
689 | by putting uninitialized data and runtime initialized data into | |
690 | .common instead of .data at the expense of not flagging multiple | |
691 | definitions. */ | |
692 | ||
693 | extern int flag_conserve_space; | |
694 | ||
695 | /* Nonzero if we want to obey access control semantics. */ | |
696 | ||
697 | extern int flag_access_control; | |
698 | ||
699 | /* Nonzero if we want to check the return value of new and avoid calling | |
700 | constructors if it is a null pointer. */ | |
701 | ||
702 | extern int flag_check_new; | |
703 | ||
704 | /* Nonzero if we want the new ISO rules for pushing a new scope for `for' | |
705 | initialization variables. | |
706 | 0: Old rules, set by -fno-for-scope. | |
707 | 2: New ISO rules, set by -ffor-scope. | |
708 | 1: Try to implement new ISO rules, but with backup compatibility | |
709 | (and warnings). This is the default, for now. */ | |
710 | ||
711 | extern int flag_new_for_scope; | |
712 | ||
713 | /* Nonzero if we want to emit defined symbols with common-like linkage as | |
714 | weak symbols where possible, in order to conform to C++ semantics. | |
715 | Otherwise, emit them as local symbols. */ | |
716 | ||
717 | extern int flag_weak; | |
718 | ||
719 | /* Nonzero to use __cxa_atexit, rather than atexit, to register | |
720 | destructors for local statics and global objects. */ | |
721 | ||
722 | extern int flag_use_cxa_atexit; | |
723 | ||
724 | /* Nonzero means output .vtable_{entry,inherit} for use in doing vtable gc. */ | |
725 | ||
726 | extern int flag_vtable_gc; | |
727 | ||
728 | /* Nonzero means make the default pedwarns warnings instead of errors. | |
729 | The value of this flag is ignored if -pedantic is specified. */ | |
730 | ||
731 | extern int flag_permissive; | |
732 | ||
733 | /* Nonzero means to implement standard semantics for exception | |
734 | specifications, calling unexpected if an exception is thrown that | |
735 | doesn't match the specification. Zero means to treat them as | |
736 | assertions and optimize accordingly, but not check them. */ | |
737 | ||
738 | extern int flag_enforce_eh_specs; | |
739 | ||
eca7f13c MM |
740 | /* Nonzero means warn about things that will change when compiling |
741 | with an ABI-compliant compiler. */ | |
742 | ||
743 | extern int warn_abi; | |
744 | ||
4078b403 NB |
745 | /* Nonzero means warn about implicit declarations. */ |
746 | ||
747 | extern int warn_implicit; | |
748 | ||
749 | /* Nonzero means warn when all ctors or dtors are private, and the class | |
750 | has no friends. */ | |
751 | ||
752 | extern int warn_ctor_dtor_privacy; | |
753 | ||
754 | /* Non-zero means warn in function declared in derived class has the | |
755 | same name as a virtual in the base class, but fails to match the | |
756 | type signature of any virtual function in the base class. */ | |
757 | ||
758 | extern int warn_overloaded_virtual; | |
759 | ||
760 | /* Non-zero means warn when declaring a class that has a non virtual | |
761 | destructor, when it really ought to have a virtual one. */ | |
762 | ||
763 | extern int warn_nonvdtor; | |
764 | ||
765 | /* Non-zero means warn when the compiler will reorder code. */ | |
766 | ||
767 | extern int warn_reorder; | |
768 | ||
769 | /* Non-zero means warn when synthesis behavior differs from Cfront's. */ | |
770 | ||
771 | extern int warn_synth; | |
772 | ||
773 | /* Non-zero means warn when we convert a pointer to member function | |
774 | into a pointer to (void or function). */ | |
775 | ||
776 | extern int warn_pmf2ptr; | |
777 | ||
778 | /* Nonzero means warn about violation of some Effective C++ style rules. */ | |
779 | ||
780 | extern int warn_ecpp; | |
781 | ||
782 | /* Nonzero means warn where overload resolution chooses a promotion from | |
783 | unsigned to signed over a conversion to an unsigned of the same size. */ | |
784 | ||
785 | extern int warn_sign_promo; | |
786 | ||
787 | /* Nonzero means warn when an old-style cast is used. */ | |
788 | ||
789 | extern int warn_old_style_cast; | |
790 | ||
791 | /* Nonzero means warn when non-templatized friend functions are | |
792 | declared within a template */ | |
793 | ||
794 | extern int warn_nontemplate_friend; | |
795 | ||
796 | /* Nonzero means complain about deprecated features. */ | |
797 | ||
798 | extern int warn_deprecated; | |
799 | ||
800 | /* Maximum template instantiation depth. This limit is rather | |
801 | arbitrary, but it exists to limit the time it takes to notice | |
802 | infinite template instantiations. */ | |
803 | ||
804 | extern int max_tinst_depth; | |
ab76ca54 | 805 | |
25587e40 AO |
806 | /* Nonzero means the expression being parsed will never be evaluated. |
807 | This is a count, since unevaluated expressions can nest. */ | |
808 | ||
809 | extern int skip_evaluation; | |
810 | ||
ab76ca54 MM |
811 | /* C types are partitioned into three subsets: object, function, and |
812 | incomplete types. */ | |
813 | #define C_TYPE_OBJECT_P(type) \ | |
814 | (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type)) | |
815 | ||
816 | #define C_TYPE_INCOMPLETE_P(type) \ | |
817 | (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type) == 0) | |
818 | ||
819 | #define C_TYPE_FUNCTION_P(type) \ | |
820 | (TREE_CODE (type) == FUNCTION_TYPE) | |
821 | ||
822 | /* For convenience we define a single macro to identify the class of | |
823 | object or incomplete types. */ | |
824 | #define C_TYPE_OBJECT_OR_INCOMPLETE_P(type) \ | |
825 | (!C_TYPE_FUNCTION_P (type)) | |
826 | ||
827 | /* Record in each node resulting from a binary operator | |
828 | what operator was specified for it. */ | |
829 | #define C_EXP_ORIGINAL_CODE(exp) ((enum tree_code) TREE_COMPLEXITY (exp)) | |
830 | ||
349ae713 NB |
831 | /* Attribute table common to the C front ends. */ |
832 | extern const struct attribute_spec c_common_attribute_table[]; | |
833 | extern const struct attribute_spec c_common_format_attribute_table[]; | |
834 | ||
0ba8a114 | 835 | /* Pointer to function to lazily generate the VAR_DECL for __FUNCTION__ etc. |
2ce07e2d NS |
836 | ID is the identifier to use, NAME is the string. |
837 | TYPE_DEP indicates whether it depends on type of the function or not | |
838 | (i.e. __PRETTY_FUNCTION__). */ | |
839 | ||
0ba8a114 | 840 | extern tree (*make_fname_decl) PARAMS ((tree, int)); |
2ce07e2d | 841 | |
5fd8e536 | 842 | extern tree identifier_global_value PARAMS ((tree)); |
eaa7c03f JM |
843 | extern void record_builtin_type PARAMS ((enum rid, |
844 | const char *, tree)); | |
845 | extern tree build_void_list_node PARAMS ((void)); | |
0ba8a114 NS |
846 | extern void start_fname_decls PARAMS ((void)); |
847 | extern void finish_fname_decls PARAMS ((void)); | |
848 | extern const char *fname_as_string PARAMS ((int)); | |
849 | extern tree fname_decl PARAMS ((unsigned, tree)); | |
850 | extern const char *fname_string PARAMS ((unsigned)); | |
59387d2e | 851 | |
b34c7881 JT |
852 | extern void check_function_arguments PARAMS ((tree, tree)); |
853 | extern void check_function_arguments_recurse PARAMS ((void (*) (void *, | |
854 | tree, | |
855 | unsigned HOST_WIDE_INT), | |
856 | void *, tree, | |
857 | unsigned HOST_WIDE_INT)); | |
80a497e4 | 858 | extern void check_function_format PARAMS ((int *, tree, tree)); |
4d808927 | 859 | extern void set_Wformat PARAMS ((int)); |
91d231cb JM |
860 | extern tree handle_format_attribute PARAMS ((tree *, tree, tree, |
861 | int, bool *)); | |
862 | extern tree handle_format_arg_attribute PARAMS ((tree *, tree, tree, | |
863 | int, bool *)); | |
6431177a | 864 | extern void c_common_insert_default_attributes PARAMS ((tree)); |
0b6f2917 | 865 | extern int c_common_decode_option PARAMS ((int, char **)); |
b0c48229 NB |
866 | extern tree c_common_type_for_mode PARAMS ((enum machine_mode, |
867 | int)); | |
868 | extern tree c_common_type_for_size PARAMS ((unsigned int, int)); | |
ceef8ce4 NB |
869 | extern tree c_common_unsigned_type PARAMS ((tree)); |
870 | extern tree c_common_signed_type PARAMS ((tree)); | |
871 | extern tree c_common_signed_or_unsigned_type PARAMS ((int, tree)); | |
78ef5b89 | 872 | extern tree c_common_truthvalue_conversion PARAMS ((tree)); |
6e090c76 | 873 | extern void c_apply_type_quals_to_decl PARAMS ((int, tree)); |
ea793912 | 874 | extern tree c_sizeof_or_alignof_type PARAMS ((tree, enum tree_code, int)); |
0213a355 | 875 | extern tree c_alignof_expr PARAMS ((tree)); |
7f4edbcb BS |
876 | /* Print an error message for invalid operands to arith operation CODE. |
877 | NOP_EXPR is used as a special case (see truthvalue_conversion). */ | |
6e090c76 | 878 | extern void binary_op_error PARAMS ((enum tree_code)); |
fa72b064 GDR |
879 | #define my_friendly_assert(EXP, N) (void) \ |
880 | (((EXP) == 0) ? (fancy_abort (__FILE__, __LINE__, __FUNCTION__), 0) : 0) | |
881 | ||
64094f6a | 882 | extern tree c_expand_expr_stmt PARAMS ((tree)); |
c1e14513 | 883 | extern void c_expand_start_cond PARAMS ((tree, int, tree)); |
8f17b5c5 | 884 | extern void c_finish_then PARAMS ((void)); |
6e090c76 | 885 | extern void c_expand_start_else PARAMS ((void)); |
b84a3874 | 886 | extern void c_finish_else PARAMS ((void)); |
6e090c76 | 887 | extern void c_expand_end_cond PARAMS ((void)); |
7f4edbcb | 888 | /* Validate the expression after `case' and apply default promotions. */ |
6e090c76 | 889 | extern tree check_case_value PARAMS ((tree)); |
b84a3874 RH |
890 | extern tree fix_string_type PARAMS ((tree)); |
891 | struct varray_head_tag; | |
892 | extern tree combine_strings PARAMS ((struct varray_head_tag *)); | |
6e090c76 KG |
893 | extern void constant_expression_warning PARAMS ((tree)); |
894 | extern tree convert_and_check PARAMS ((tree, tree)); | |
895 | extern void overflow_warning PARAMS ((tree)); | |
896 | extern void unsigned_conversion_warning PARAMS ((tree, tree)); | |
ab76ca54 | 897 | |
7f4edbcb | 898 | /* Read the rest of the current #-directive line. */ |
6e090c76 | 899 | extern char *get_directive_line PARAMS ((void)); |
7f4edbcb | 900 | #define GET_DIRECTIVE_LINE() get_directive_line () |
ea793912 GDR |
901 | #define c_sizeof(T) c_sizeof_or_alignof_type (T, SIZEOF_EXPR, 1) |
902 | #define c_alignof(T) c_sizeof_or_alignof_type (T, ALIGNOF_EXPR, 1) | |
7f4edbcb BS |
903 | |
904 | /* Subroutine of build_binary_op, used for comparison operations. | |
905 | See if the operands have both been converted from subword integer types | |
906 | and, if so, perhaps change them both back to their original type. */ | |
6e090c76 | 907 | extern tree shorten_compare PARAMS ((tree *, tree *, tree *, enum tree_code *)); |
7f4edbcb | 908 | |
7552da58 | 909 | extern tree pointer_int_sum PARAMS ((enum tree_code, tree, tree)); |
50e60bc3 ZW |
910 | extern unsigned int min_precision PARAMS ((tree, int)); |
911 | ||
912 | /* Add qualifiers to a type, in the fashion for C. */ | |
913 | extern tree c_build_qualified_type PARAMS ((tree, int)); | |
914 | ||
7f4edbcb BS |
915 | /* Build tree nodes and builtin functions common to both C and C++ language |
916 | frontends. */ | |
6bcedb4e | 917 | extern void c_common_nodes_and_builtins PARAMS ((void)); |
d3707adb | 918 | |
7d14c755 JM |
919 | extern void disable_builtin_function PARAMS ((const char *)); |
920 | ||
6e090c76 | 921 | extern tree build_va_arg PARAMS ((tree, tree)); |
7e8176d7 | 922 | |
4d6baafa | 923 | extern void c_common_init_options PARAMS ((enum c_language_kind)); |
5351f1ca | 924 | extern bool c_common_post_options PARAMS ((void)); |
4d6baafa | 925 | extern const char *c_common_init PARAMS ((const char *)); |
22703ccc | 926 | extern void c_common_finish PARAMS ((void)); |
ff45c01e | 927 | extern void c_common_parse_file PARAMS ((int)); |
8ac61af7 | 928 | extern HOST_WIDE_INT c_common_get_alias_set PARAMS ((tree)); |
d72040f5 | 929 | extern bool c_promoting_integer_type_p PARAMS ((tree)); |
6e090c76 | 930 | extern int self_promoting_args_p PARAMS ((tree)); |
0a7394bc | 931 | extern tree strip_array_types PARAMS ((tree)); |
d7e7759d | 932 | |
ae499cce MM |
933 | /* These macros provide convenient access to the various _STMT nodes. */ |
934 | ||
935 | /* Nonzero if this statement should be considered a full-expression, | |
936 | i.e., if temporaries created during this statement should have | |
937 | their destructors run at the end of this statement. (In C, this | |
938 | will always be false, since there are no destructors.) */ | |
939 | #define STMT_IS_FULL_EXPR_P(NODE) TREE_LANG_FLAG_1 ((NODE)) | |
35b1567d | 940 | |
ff7cc307 | 941 | /* IF_STMT accessors. These give access to the condition of the if |
35b1567d | 942 | statement, the then block of the if statement, and the else block |
684d9f3b | 943 | of the if statement if it exists. */ |
d7e7759d BC |
944 | #define IF_COND(NODE) TREE_OPERAND (IF_STMT_CHECK (NODE), 0) |
945 | #define THEN_CLAUSE(NODE) TREE_OPERAND (IF_STMT_CHECK (NODE), 1) | |
946 | #define ELSE_CLAUSE(NODE) TREE_OPERAND (IF_STMT_CHECK (NODE), 2) | |
35b1567d | 947 | |
ff7cc307 | 948 | /* WHILE_STMT accessors. These give access to the condition of the |
2ba84f36 | 949 | while statement and the body of the while statement, respectively. */ |
d7e7759d BC |
950 | #define WHILE_COND(NODE) TREE_OPERAND (WHILE_STMT_CHECK (NODE), 0) |
951 | #define WHILE_BODY(NODE) TREE_OPERAND (WHILE_STMT_CHECK (NODE), 1) | |
35b1567d BC |
952 | |
953 | /* DO_STMT accessors. These give access to the condition of the do | |
2ba84f36 | 954 | statement and the body of the do statement, respectively. */ |
d7e7759d BC |
955 | #define DO_COND(NODE) TREE_OPERAND (DO_STMT_CHECK (NODE), 0) |
956 | #define DO_BODY(NODE) TREE_OPERAND (DO_STMT_CHECK (NODE), 1) | |
35b1567d | 957 | |
0d97bf4c JM |
958 | /* RETURN_STMT accessors. These give the expression associated with a |
959 | return statement, and whether it should be ignored when expanding | |
960 | (as opposed to inlining). */ | |
d65b1d77 | 961 | #define RETURN_STMT_EXPR(NODE) TREE_OPERAND (RETURN_STMT_CHECK (NODE), 0) |
35b1567d BC |
962 | |
963 | /* EXPR_STMT accessor. This gives the expression associated with an | |
2ba84f36 | 964 | expression statement. */ |
d7e7759d | 965 | #define EXPR_STMT_EXPR(NODE) TREE_OPERAND (EXPR_STMT_CHECK (NODE), 0) |
35b1567d BC |
966 | |
967 | /* FOR_STMT accessors. These give access to the init statement, | |
968 | condition, update expression, and body of the for statement, | |
2ba84f36 | 969 | respectively. */ |
d7e7759d BC |
970 | #define FOR_INIT_STMT(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 0) |
971 | #define FOR_COND(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 1) | |
972 | #define FOR_EXPR(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 2) | |
973 | #define FOR_BODY(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 3) | |
35b1567d | 974 | |
6f9fdf4d JJ |
975 | /* SWITCH_STMT accessors. These give access to the condition, body and |
976 | original condition type (before any compiler conversions) | |
2ba84f36 | 977 | of the switch statement, respectively. */ |
d7e7759d BC |
978 | #define SWITCH_COND(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 0) |
979 | #define SWITCH_BODY(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 1) | |
6f9fdf4d | 980 | #define SWITCH_TYPE(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 2) |
35b1567d BC |
981 | |
982 | /* CASE_LABEL accessors. These give access to the high and low values | |
2ba84f36 | 983 | of a case label, respectively. */ |
d7e7759d BC |
984 | #define CASE_LOW(NODE) TREE_OPERAND (CASE_LABEL_CHECK (NODE), 0) |
985 | #define CASE_HIGH(NODE) TREE_OPERAND (CASE_LABEL_CHECK (NODE), 1) | |
56cb9733 | 986 | #define CASE_LABEL_DECL(NODE) TREE_OPERAND (CASE_LABEL_CHECK (NODE), 2) |
35b1567d BC |
987 | |
988 | /* GOTO_STMT accessor. This gives access to the label associated with | |
2ba84f36 | 989 | a goto statement. */ |
d7e7759d | 990 | #define GOTO_DESTINATION(NODE) TREE_OPERAND (GOTO_STMT_CHECK (NODE), 0) |
db4a8254 JH |
991 | /* True for goto created artifically by the compiler. */ |
992 | #define GOTO_FAKE_P(NODE) (TREE_LANG_FLAG_0 (GOTO_STMT_CHECK (NODE))) | |
35b1567d BC |
993 | |
994 | /* COMPOUND_STMT accessor. This gives access to the TREE_LIST of | |
684d9f3b JM |
995 | statements associated with a compound statement. The result is the |
996 | first statement in the list. Succeeding nodes can be accessed by | |
2ba84f36 | 997 | calling TREE_CHAIN on a node in the list. */ |
d7e7759d | 998 | #define COMPOUND_BODY(NODE) TREE_OPERAND (COMPOUND_STMT_CHECK (NODE), 0) |
35b1567d BC |
999 | |
1000 | /* ASM_STMT accessors. ASM_STRING returns a STRING_CST for the | |
1001 | instruction (e.g., "mov x, y"). ASM_OUTPUTS, ASM_INPUTS, and | |
1002 | ASM_CLOBBERS represent the outputs, inputs, and clobbers for the | |
2ba84f36 | 1003 | statement. */ |
d7e7759d BC |
1004 | #define ASM_CV_QUAL(NODE) TREE_OPERAND (ASM_STMT_CHECK (NODE), 0) |
1005 | #define ASM_STRING(NODE) TREE_OPERAND (ASM_STMT_CHECK (NODE), 1) | |
1006 | #define ASM_OUTPUTS(NODE) TREE_OPERAND (ASM_STMT_CHECK (NODE), 2) | |
1007 | #define ASM_INPUTS(NODE) TREE_OPERAND (ASM_STMT_CHECK (NODE), 3) | |
1008 | #define ASM_CLOBBERS(NODE) TREE_OPERAND (ASM_STMT_CHECK (NODE), 4) | |
35b1567d BC |
1009 | |
1010 | /* DECL_STMT accessor. This gives access to the DECL associated with | |
2ba84f36 | 1011 | the given declaration statement. */ |
d7e7759d | 1012 | #define DECL_STMT_DECL(NODE) TREE_OPERAND (DECL_STMT_CHECK (NODE), 0) |
35b1567d | 1013 | |
2ba84f36 | 1014 | /* STMT_EXPR accessor. */ |
d7e7759d | 1015 | #define STMT_EXPR_STMT(NODE) TREE_OPERAND (STMT_EXPR_CHECK (NODE), 0) |
35b1567d | 1016 | |
b2123dc0 MM |
1017 | /* Nonzero if this statement-expression does not have an associated scope. */ |
1018 | #define STMT_EXPR_NO_SCOPE(NODE) \ | |
1019 | TREE_LANG_FLAG_0 (STMT_EXPR_CHECK (NODE)) | |
1020 | ||
35b1567d | 1021 | /* LABEL_STMT accessor. This gives access to the label associated with |
2ba84f36 | 1022 | the given label statement. */ |
d7e7759d BC |
1023 | #define LABEL_STMT_LABEL(NODE) TREE_OPERAND (LABEL_STMT_CHECK (NODE), 0) |
1024 | ||
8d37a5c0 JM |
1025 | /* COMPOUND_LITERAL_EXPR accessors. */ |
1026 | #define COMPOUND_LITERAL_EXPR_DECL_STMT(NODE) \ | |
db3acfa5 | 1027 | TREE_OPERAND (COMPOUND_LITERAL_EXPR_CHECK (NODE), 0) |
8d37a5c0 JM |
1028 | #define COMPOUND_LITERAL_EXPR_DECL(NODE) \ |
1029 | DECL_STMT_DECL (COMPOUND_LITERAL_EXPR_DECL_STMT (NODE)) | |
db3acfa5 | 1030 | |
d7e7759d BC |
1031 | /* Nonzero if this SCOPE_STMT is for the beginning of a scope. */ |
1032 | #define SCOPE_BEGIN_P(NODE) \ | |
21c7361e | 1033 | (TREE_LANG_FLAG_0 (SCOPE_STMT_CHECK (NODE))) |
d7e7759d BC |
1034 | |
1035 | /* Nonzero if this SCOPE_STMT is for the end of a scope. */ | |
1036 | #define SCOPE_END_P(NODE) \ | |
1037 | (!SCOPE_BEGIN_P (SCOPE_STMT_CHECK (NODE))) | |
1038 | ||
1039 | /* The BLOCK containing the declarations contained in this scope. */ | |
1040 | #define SCOPE_STMT_BLOCK(NODE) \ | |
1041 | (TREE_OPERAND (SCOPE_STMT_CHECK (NODE), 0)) | |
1042 | ||
1043 | /* Nonzero for a SCOPE_STMT if there were no variables in this scope. */ | |
1044 | #define SCOPE_NULLIFIED_P(NODE) \ | |
1045 | (SCOPE_STMT_BLOCK ((NODE)) == NULL_TREE) | |
1046 | ||
1047 | /* Nonzero for a SCOPE_STMT which represents a lexical scope, but | |
ff7cc307 | 1048 | which should be treated as non-existent from the point of view of |
d7e7759d BC |
1049 | running cleanup actions. */ |
1050 | #define SCOPE_NO_CLEANUPS_P(NODE) \ | |
1051 | (TREE_LANG_FLAG_3 (SCOPE_STMT_CHECK (NODE))) | |
1052 | ||
1053 | /* Nonzero for a SCOPE_STMT if this statement is for a partial scope. | |
1054 | For example, in: | |
21c7361e | 1055 | |
d7e7759d BC |
1056 | S s; |
1057 | l: | |
1058 | S s2; | |
1059 | goto l; | |
1060 | ||
1061 | there is (implicitly) a new scope after `l', even though there are | |
1062 | no curly braces. In particular, when we hit the goto, we must | |
1063 | destroy s2 and then re-construct it. For the implicit scope, | |
1064 | SCOPE_PARTIAL_P will be set. */ | |
1065 | #define SCOPE_PARTIAL_P(NODE) \ | |
1066 | (TREE_LANG_FLAG_4 (SCOPE_STMT_CHECK (NODE))) | |
1067 | ||
1068 | /* Nonzero for an ASM_STMT if the assembly statement is volatile. */ | |
1069 | #define ASM_VOLATILE_P(NODE) \ | |
1070 | (ASM_CV_QUAL (ASM_STMT_CHECK (NODE)) != NULL_TREE) | |
1071 | ||
6e4ae815 MM |
1072 | /* The VAR_DECL to clean up in a CLEANUP_STMT. */ |
1073 | #define CLEANUP_DECL(NODE) \ | |
1074 | TREE_OPERAND (CLEANUP_STMT_CHECK (NODE), 0) | |
1075 | /* The cleanup to run in a CLEANUP_STMT. */ | |
1076 | #define CLEANUP_EXPR(NODE) \ | |
1077 | TREE_OPERAND (CLEANUP_STMT_CHECK (NODE), 1) | |
1078 | ||
de097a2d JM |
1079 | /* The filename we are changing to as of this FILE_STMT. */ |
1080 | #define FILE_STMT_FILENAME_NODE(NODE) \ | |
1081 | (TREE_OPERAND (FILE_STMT_CHECK (NODE), 0)) | |
1082 | #define FILE_STMT_FILENAME(NODE) \ | |
1083 | (IDENTIFIER_POINTER (FILE_STMT_FILENAME_NODE (NODE))) | |
1084 | ||
d7e7759d BC |
1085 | /* The line-number at which a statement began. But if |
1086 | STMT_LINENO_FOR_FN_P does holds, then this macro gives the | |
1087 | line number for the end of the current function instead. */ | |
1088 | #define STMT_LINENO(NODE) \ | |
1089 | (TREE_COMPLEXITY ((NODE))) | |
1090 | ||
1091 | /* If non-zero, the STMT_LINENO for NODE is the line at which the | |
1092 | function ended. */ | |
21c7361e | 1093 | #define STMT_LINENO_FOR_FN_P(NODE) \ |
d7e7759d | 1094 | (TREE_LANG_FLAG_2 ((NODE))) |
c7d87c0a | 1095 | |
f2c5f623 | 1096 | /* Nonzero if we want the new ISO rules for pushing a new scope for `for' |
2ba84f36 | 1097 | initialization variables. */ |
21c7361e | 1098 | #define NEW_FOR_SCOPE_P(NODE) (TREE_LANG_FLAG_0 (NODE)) |
c7d87c0a | 1099 | |
4f78b9a8 RH |
1100 | /* Nonzero if we want to create an ASM_INPUT instead of an |
1101 | ASM_OPERAND with no operands. */ | |
1102 | #define ASM_INPUT_P(NODE) (TREE_LANG_FLAG_0 (NODE)) | |
1103 | ||
c7d87c0a BC |
1104 | #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) SYM, |
1105 | ||
1106 | enum c_tree_code { | |
1107 | C_DUMMY_TREE_CODE = LAST_AND_UNUSED_TREE_CODE, | |
1108 | #include "c-common.def" | |
1109 | LAST_C_TREE_CODE | |
1110 | }; | |
1111 | ||
1112 | #undef DEFTREECODE | |
1113 | ||
f2c5f623 | 1114 | extern void genrtl_do_pushlevel PARAMS ((void)); |
f2c5f623 BC |
1115 | extern void genrtl_goto_stmt PARAMS ((tree)); |
1116 | extern void genrtl_expr_stmt PARAMS ((tree)); | |
b0832fe1 | 1117 | extern void genrtl_expr_stmt_value PARAMS ((tree, int, int)); |
f2c5f623 BC |
1118 | extern void genrtl_decl_stmt PARAMS ((tree)); |
1119 | extern void genrtl_if_stmt PARAMS ((tree)); | |
1120 | extern void genrtl_while_stmt PARAMS ((tree)); | |
1121 | extern void genrtl_do_stmt PARAMS ((tree)); | |
1122 | extern void genrtl_return_stmt PARAMS ((tree)); | |
1123 | extern void genrtl_for_stmt PARAMS ((tree)); | |
1124 | extern void genrtl_break_stmt PARAMS ((void)); | |
1125 | extern void genrtl_continue_stmt PARAMS ((void)); | |
1126 | extern void genrtl_scope_stmt PARAMS ((tree)); | |
1127 | extern void genrtl_switch_stmt PARAMS ((tree)); | |
56cb9733 | 1128 | extern void genrtl_case_label PARAMS ((tree)); |
4cf88f57 | 1129 | extern void genrtl_compound_stmt PARAMS ((tree)); |
f2c5f623 BC |
1130 | extern void genrtl_asm_stmt PARAMS ((tree, tree, |
1131 | tree, tree, | |
4f78b9a8 | 1132 | tree, int)); |
659e5a7a | 1133 | extern void genrtl_decl_cleanup PARAMS ((tree)); |
f2c5f623 | 1134 | extern int stmts_are_full_exprs_p PARAMS ((void)); |
f2c5f623 BC |
1135 | extern int anon_aggr_type_p PARAMS ((tree)); |
1136 | ||
1137 | /* For a VAR_DECL that is an anonymous union, these are the various | |
1138 | sub-variables that make up the anonymous union. */ | |
1139 | #define DECL_ANON_UNION_ELEMS(NODE) DECL_ARGUMENTS ((NODE)) | |
1140 | ||
0a7394bc MM |
1141 | /* In a FIELD_DECL, nonzero if the decl was originally a bitfield. */ |
1142 | #define DECL_C_BIT_FIELD(NODE) \ | |
1143 | (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) == 1) | |
1144 | #define SET_DECL_C_BIT_FIELD(NODE) \ | |
1145 | (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 1) | |
1146 | #define CLEAR_DECL_C_BIT_FIELD(NODE) \ | |
1147 | (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 0) | |
1148 | ||
3645c4dc RH |
1149 | /* In a VAR_DECL, nonzero if the decl is a register variable with |
1150 | an explicit asm specification. */ | |
1151 | #define DECL_C_HARD_REGISTER(DECL) DECL_LANG_FLAG_4 (VAR_DECL_CHECK (DECL)) | |
1152 | ||
f2c5f623 BC |
1153 | extern void emit_local_var PARAMS ((tree)); |
1154 | extern void make_rtl_for_local_static PARAMS ((tree)); | |
1155 | extern tree expand_cond PARAMS ((tree)); | |
64094f6a RH |
1156 | extern tree c_expand_return PARAMS ((tree)); |
1157 | extern tree do_case PARAMS ((tree, tree)); | |
0dfdeca6 | 1158 | extern tree build_stmt PARAMS ((enum tree_code, ...)); |
56cb9733 | 1159 | extern tree build_case_label PARAMS ((tree, tree, tree)); |
0dfdeca6 BC |
1160 | extern tree build_continue_stmt PARAMS ((void)); |
1161 | extern tree build_break_stmt PARAMS ((void)); | |
1162 | extern tree build_return_stmt PARAMS ((tree)); | |
f2c5f623 BC |
1163 | |
1164 | #define COMPOUND_STMT_NO_SCOPE(NODE) TREE_LANG_FLAG_0 (NODE) | |
1165 | ||
ade3dc07 JM |
1166 | /* Used by the C++ frontend to mark the block around the member |
1167 | initializers and cleanups. */ | |
1168 | #define COMPOUND_STMT_BODY_BLOCK(NODE) TREE_LANG_FLAG_3 (NODE) | |
1169 | ||
f2c5f623 | 1170 | extern void c_expand_asm_operands PARAMS ((tree, tree, tree, tree, int, const char *, int)); |
ab76ca54 MM |
1171 | |
1172 | /* These functions must be defined by each front-end which implements | |
1173 | a variant of the C language. They are used in c-common.c. */ | |
1174 | ||
1175 | extern tree build_unary_op PARAMS ((enum tree_code, | |
1176 | tree, int)); | |
1177 | extern tree build_binary_op PARAMS ((enum tree_code, | |
1178 | tree, tree, int)); | |
1179 | extern int lvalue_p PARAMS ((tree)); | |
1180 | extern tree default_conversion PARAMS ((tree)); | |
1181 | ||
1182 | /* Given two integer or real types, return the type for their sum. | |
1183 | Given two compatible ANSI C types, returns the merged type. */ | |
1184 | ||
1185 | extern tree common_type PARAMS ((tree, tree)); | |
44835fdd MM |
1186 | |
1187 | extern tree expand_tree_builtin PARAMS ((tree, tree, tree)); | |
0e5921e8 | 1188 | |
56cb9733 MM |
1189 | extern tree decl_constant_value PARAMS ((tree)); |
1190 | ||
19552aa5 JM |
1191 | /* Handle increment and decrement of boolean types. */ |
1192 | extern tree boolean_increment PARAMS ((enum tree_code, | |
1193 | tree)); | |
1194 | ||
0e5921e8 ZW |
1195 | /* Hook currently used only by the C++ front end to reset internal state |
1196 | after entering or leaving a header file. */ | |
1197 | extern void extract_interface_info PARAMS ((void)); | |
1198 | ||
21c7361e | 1199 | extern int case_compare PARAMS ((splay_tree_key, |
8f17b5c5 MM |
1200 | splay_tree_key)); |
1201 | ||
1202 | extern tree c_add_case_label PARAMS ((splay_tree, | |
1203 | tree, tree, | |
1204 | tree)); | |
1205 | ||
c70eaeaf KG |
1206 | extern tree build_function_call PARAMS ((tree, tree)); |
1207 | ||
15b732b2 NB |
1208 | extern tree finish_label_address_expr PARAMS ((tree)); |
1209 | ||
1210 | /* Same function prototype, but the C and C++ front ends have | |
1211 | different implementations. Used in c-common.c. */ | |
1212 | extern tree lookup_label PARAMS ((tree)); | |
1213 | ||
c9d892a8 NB |
1214 | extern rtx c_expand_expr PARAMS ((tree, rtx, |
1215 | enum machine_mode, | |
1216 | int)); | |
8f17b5c5 MM |
1217 | |
1218 | extern int c_safe_from_p PARAMS ((rtx, tree)); | |
8f17b5c5 | 1219 | |
db3acfa5 JM |
1220 | extern int c_staticp PARAMS ((tree)); |
1221 | ||
48a7a235 | 1222 | extern int c_common_unsafe_for_reeval PARAMS ((tree)); |
3fe30ff6 | 1223 | |
81a75f0f NB |
1224 | extern const char *init_c_lex PARAMS ((const char *)); |
1225 | ||
460bd0e3 | 1226 | extern void cb_register_builtins PARAMS ((cpp_reader *)); |
76c3e73e | 1227 | |
0e5921e8 ZW |
1228 | /* Information recorded about each file examined during compilation. */ |
1229 | ||
1230 | struct c_fileinfo | |
1231 | { | |
1232 | int time; /* Time spent in the file. */ | |
1233 | short interface_only; /* Flags - used only by C++ */ | |
1234 | short interface_unknown; | |
1235 | }; | |
1236 | ||
1237 | struct c_fileinfo *get_fileinfo PARAMS ((const char *)); | |
1238 | extern void dump_time_statistics PARAMS ((void)); | |
1239 | ||
558ee214 JM |
1240 | extern int c_dump_tree PARAMS ((void *, tree)); |
1241 | ||
88657302 | 1242 | #endif /* ! GCC_C_COMMON_H */ |