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7f4edbcb | 1 | /* Definitions for c-common.c. |
517cbe13 | 2 | Copyright (C) 1987, 1993, 1994, 1995, 1997, 1998, |
21c7361e | 3 | 1999, 2000, 2001 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) |
f2c5f623 BC |
36 | 1: C_DECLARED_LABEL_FLAG (in LABEL_DECL) |
37 | STMT_IS_FULL_EXPR_P (in _STMT) | |
38 | 2: STMT_LINENO_FOR_FN_P (in _STMT) | |
39 | 3: SCOPE_NO_CLEANUPS_P (in SCOPE_STMT) | |
40 | 4: SCOPE_PARTIAL_P (in SCOPE_STMT) | |
41 | */ | |
42 | ||
0e5921e8 ZW |
43 | /* Reserved identifiers. This is the union of all the keywords for C, |
44 | C++, and Objective C. All the type modifiers have to be in one | |
45 | block at the beginning, because they are used as mask bits. There | |
46 | are 27 type modifiers; if we add many more we will have to redesign | |
47 | the mask mechanism. */ | |
f09f1de5 MM |
48 | |
49 | enum rid | |
50 | { | |
0e5921e8 | 51 | /* Modifiers: */ |
2ba84f36 | 52 | /* C, in empirical order of frequency. */ |
0e5921e8 ZW |
53 | RID_STATIC = 0, |
54 | RID_UNSIGNED, RID_LONG, RID_CONST, RID_EXTERN, | |
55 | RID_REGISTER, RID_TYPEDEF, RID_SHORT, RID_INLINE, | |
56 | RID_VOLATILE, RID_SIGNED, RID_AUTO, RID_RESTRICT, | |
57 | ||
58 | /* C extensions */ | |
59 | RID_BOUNDED, RID_UNBOUNDED, RID_COMPLEX, | |
60 | ||
61 | /* C++ */ | |
62 | RID_FRIEND, RID_VIRTUAL, RID_EXPLICIT, RID_EXPORT, RID_MUTABLE, | |
63 | ||
64 | /* ObjC */ | |
b8363a24 | 65 | RID_IN, RID_OUT, RID_INOUT, RID_BYCOPY, RID_BYREF, RID_ONEWAY, |
0e5921e8 ZW |
66 | |
67 | /* C */ | |
68 | RID_INT, RID_CHAR, RID_FLOAT, RID_DOUBLE, RID_VOID, | |
69 | RID_ENUM, RID_STRUCT, RID_UNION, RID_IF, RID_ELSE, | |
70 | RID_WHILE, RID_DO, RID_FOR, RID_SWITCH, RID_CASE, | |
71 | RID_DEFAULT, RID_BREAK, RID_CONTINUE, RID_RETURN, RID_GOTO, | |
72 | RID_SIZEOF, | |
73 | ||
74 | /* C extensions */ | |
75 | RID_ASM, RID_TYPEOF, RID_ALIGNOF, RID_ATTRIBUTE, RID_VA_ARG, | |
76 | RID_EXTENSION, RID_IMAGPART, RID_REALPART, RID_LABEL, RID_PTRBASE, | |
ecbcf7b3 | 77 | RID_PTREXTENT, RID_PTRVALUE, RID_CHOOSE_EXPR, RID_TYPES_COMPATIBLE_P, |
0e5921e8 | 78 | |
0ba8a114 NS |
79 | /* Too many ways of getting the name of a function as a string */ |
80 | RID_FUNCTION_NAME, RID_PRETTY_FUNCTION_NAME, RID_C99_FUNCTION_NAME, | |
81 | ||
0e5921e8 ZW |
82 | /* C++ */ |
83 | RID_BOOL, RID_WCHAR, RID_CLASS, | |
84 | RID_PUBLIC, RID_PRIVATE, RID_PROTECTED, | |
85 | RID_TEMPLATE, RID_NULL, RID_CATCH, | |
86 | RID_DELETE, RID_FALSE, RID_NAMESPACE, | |
87 | RID_NEW, RID_OPERATOR, RID_THIS, | |
88 | RID_THROW, RID_TRUE, RID_TRY, | |
89 | RID_TYPENAME, RID_TYPEID, RID_USING, | |
90 | ||
91 | /* casts */ | |
92 | RID_CONSTCAST, RID_DYNCAST, RID_REINTCAST, RID_STATCAST, | |
93 | ||
94 | /* alternate spellings */ | |
95 | RID_AND, RID_AND_EQ, RID_NOT, RID_NOT_EQ, | |
96 | RID_OR, RID_OR_EQ, RID_XOR, RID_XOR_EQ, | |
97 | RID_BITAND, RID_BITOR, RID_COMPL, | |
98 | ||
99 | /* Objective C */ | |
100 | RID_ID, RID_AT_ENCODE, RID_AT_END, | |
101 | RID_AT_CLASS, RID_AT_ALIAS, RID_AT_DEFS, | |
102 | RID_AT_PRIVATE, RID_AT_PROTECTED, RID_AT_PUBLIC, | |
103 | RID_AT_PROTOCOL, RID_AT_SELECTOR, RID_AT_INTERFACE, | |
104 | RID_AT_IMPLEMENTATION, | |
105 | ||
106 | RID_MAX, | |
107 | ||
108 | RID_FIRST_MODIFIER = RID_STATIC, | |
b8363a24 ZW |
109 | RID_LAST_MODIFIER = RID_ONEWAY, |
110 | ||
111 | RID_FIRST_AT = RID_AT_ENCODE, | |
112 | RID_LAST_AT = RID_AT_IMPLEMENTATION, | |
113 | RID_FIRST_PQ = RID_IN, | |
114 | RID_LAST_PQ = RID_ONEWAY | |
f09f1de5 MM |
115 | }; |
116 | ||
b8363a24 ZW |
117 | #define OBJC_IS_AT_KEYWORD(rid) \ |
118 | ((unsigned int)(rid) >= (unsigned int)RID_FIRST_AT && \ | |
119 | (unsigned int)(rid) <= (unsigned int)RID_LAST_AT) | |
120 | ||
121 | #define OBJC_IS_PQ_KEYWORD(rid) \ | |
122 | ((unsigned int)(rid) >= (unsigned int)RID_FIRST_PQ && \ | |
123 | (unsigned int)(rid) <= (unsigned int)RID_LAST_PQ) | |
124 | ||
f09f1de5 MM |
125 | /* The elements of `ridpointers' are identifier nodes for the reserved |
126 | type names and storage classes. It is indexed by a RID_... value. */ | |
127 | extern tree *ridpointers; | |
128 | ||
7f4edbcb BS |
129 | /* Standard named or nameless data types of the C compiler. */ |
130 | ||
131 | enum c_tree_index | |
132 | { | |
7f4edbcb BS |
133 | CTI_WCHAR_TYPE, |
134 | CTI_SIGNED_WCHAR_TYPE, | |
135 | CTI_UNSIGNED_WCHAR_TYPE, | |
c5ab7f91 | 136 | CTI_WINT_TYPE, |
fe8ca71f JM |
137 | CTI_C_SIZE_TYPE, /* The type used for the size_t typedef and the |
138 | result type of sizeof (an ordinary type without | |
139 | TYPE_IS_SIZETYPE set, unlike the internal | |
140 | sizetype). */ | |
cd732418 JM |
141 | CTI_SIGNED_SIZE_TYPE, /* For format checking only. */ |
142 | CTI_UNSIGNED_PTRDIFF_TYPE, /* For format checking only. */ | |
b15ad712 JM |
143 | CTI_INTMAX_TYPE, |
144 | CTI_UINTMAX_TYPE, | |
7f4edbcb BS |
145 | CTI_WIDEST_INT_LIT_TYPE, |
146 | CTI_WIDEST_UINT_LIT_TYPE, | |
147 | ||
7f4edbcb BS |
148 | CTI_CHAR_ARRAY_TYPE, |
149 | CTI_WCHAR_ARRAY_TYPE, | |
150 | CTI_INT_ARRAY_TYPE, | |
151 | CTI_STRING_TYPE, | |
152 | CTI_CONST_STRING_TYPE, | |
153 | ||
19552aa5 | 154 | /* Type for boolean expressions (bool in C++, int in C). */ |
7f4edbcb BS |
155 | CTI_BOOLEAN_TYPE, |
156 | CTI_BOOLEAN_TRUE, | |
157 | CTI_BOOLEAN_FALSE, | |
19552aa5 JM |
158 | /* C99's _Bool type. */ |
159 | CTI_C_BOOL_TYPE, | |
160 | CTI_C_BOOL_TRUE, | |
161 | CTI_C_BOOL_FALSE, | |
7f4edbcb | 162 | CTI_DEFAULT_FUNCTION_TYPE, |
7f4edbcb | 163 | |
7aba5a5f CD |
164 | CTI_G77_INTEGER_TYPE, |
165 | CTI_G77_UINTEGER_TYPE, | |
166 | CTI_G77_LONGINT_TYPE, | |
167 | CTI_G77_ULONGINT_TYPE, | |
168 | ||
2ba84f36 | 169 | /* These are not types, but we have to look them up all the time. */ |
0ba8a114 NS |
170 | CTI_FUNCTION_NAME_DECL, |
171 | CTI_PRETTY_FUNCTION_NAME_DECL, | |
172 | CTI_C99_FUNCTION_NAME_DECL, | |
173 | CTI_SAVED_FUNCTION_NAME_DECLS, | |
174 | ||
ae499cce MM |
175 | CTI_VOID_ZERO, |
176 | ||
7f4edbcb BS |
177 | CTI_MAX |
178 | }; | |
179 | ||
b621a4dd | 180 | #define C_RID_CODE(id) (((struct c_common_identifier *) (id))->node.rid_code) |
2a967f3d NB |
181 | |
182 | /* Identifier part common to the C front ends. Inherits from | |
183 | tree_identifier, despite appearances. */ | |
184 | struct c_common_identifier | |
185 | { | |
186 | struct tree_common common; | |
187 | struct cpp_hashnode node; | |
2a967f3d NB |
188 | }; |
189 | ||
7f4edbcb BS |
190 | #define wchar_type_node c_global_trees[CTI_WCHAR_TYPE] |
191 | #define signed_wchar_type_node c_global_trees[CTI_SIGNED_WCHAR_TYPE] | |
192 | #define unsigned_wchar_type_node c_global_trees[CTI_UNSIGNED_WCHAR_TYPE] | |
c5ab7f91 | 193 | #define wint_type_node c_global_trees[CTI_WINT_TYPE] |
3c786c69 | 194 | #define c_size_type_node c_global_trees[CTI_C_SIZE_TYPE] |
cd732418 JM |
195 | #define signed_size_type_node c_global_trees[CTI_SIGNED_SIZE_TYPE] |
196 | #define unsigned_ptrdiff_type_node c_global_trees[CTI_UNSIGNED_PTRDIFF_TYPE] | |
b15ad712 JM |
197 | #define intmax_type_node c_global_trees[CTI_INTMAX_TYPE] |
198 | #define uintmax_type_node c_global_trees[CTI_UINTMAX_TYPE] | |
7f4edbcb BS |
199 | #define widest_integer_literal_type_node c_global_trees[CTI_WIDEST_INT_LIT_TYPE] |
200 | #define widest_unsigned_literal_type_node c_global_trees[CTI_WIDEST_UINT_LIT_TYPE] | |
201 | ||
7f4edbcb BS |
202 | #define boolean_type_node c_global_trees[CTI_BOOLEAN_TYPE] |
203 | #define boolean_true_node c_global_trees[CTI_BOOLEAN_TRUE] | |
204 | #define boolean_false_node c_global_trees[CTI_BOOLEAN_FALSE] | |
205 | ||
19552aa5 JM |
206 | #define c_bool_type_node c_global_trees[CTI_C_BOOL_TYPE] |
207 | #define c_bool_true_node c_global_trees[CTI_C_BOOL_TRUE] | |
208 | #define c_bool_false_node c_global_trees[CTI_C_BOOL_FALSE] | |
209 | ||
7f4edbcb BS |
210 | #define char_array_type_node c_global_trees[CTI_CHAR_ARRAY_TYPE] |
211 | #define wchar_array_type_node c_global_trees[CTI_WCHAR_ARRAY_TYPE] | |
212 | #define int_array_type_node c_global_trees[CTI_INT_ARRAY_TYPE] | |
213 | #define string_type_node c_global_trees[CTI_STRING_TYPE] | |
214 | #define const_string_type_node c_global_trees[CTI_CONST_STRING_TYPE] | |
215 | ||
216 | #define default_function_type c_global_trees[CTI_DEFAULT_FUNCTION_TYPE] | |
7f4edbcb | 217 | |
7aba5a5f CD |
218 | /* g77 integer types, which which must be kept in sync with f/com.h */ |
219 | #define g77_integer_type_node c_global_trees[CTI_G77_INTEGER_TYPE] | |
220 | #define g77_uinteger_type_node c_global_trees[CTI_G77_UINTEGER_TYPE] | |
221 | #define g77_longint_type_node c_global_trees[CTI_G77_LONGINT_TYPE] | |
222 | #define g77_ulongint_type_node c_global_trees[CTI_G77_ULONGINT_TYPE] | |
223 | ||
0ba8a114 NS |
224 | #define function_name_decl_node c_global_trees[CTI_FUNCTION_NAME_DECL] |
225 | #define pretty_function_name_decl_node c_global_trees[CTI_PRETTY_FUNCTION_NAME_DECL] | |
226 | #define c99_function_name_decl_node c_global_trees[CTI_C99_FUNCTION_NAME_DECL] | |
227 | #define saved_function_name_decls c_global_trees[CTI_SAVED_FUNCTION_NAME_DECLS] | |
63ad61ed | 228 | |
ae499cce MM |
229 | /* A node for `((void) 0)'. */ |
230 | #define void_zero_node c_global_trees[CTI_VOID_ZERO] | |
231 | ||
ab76ca54 MM |
232 | extern tree c_global_trees[CTI_MAX]; |
233 | ||
8f17b5c5 MM |
234 | /* Mark which labels are explicitly declared. |
235 | These may be shadowed, and may be referenced from nested functions. */ | |
236 | #define C_DECLARED_LABEL_FLAG(label) TREE_LANG_FLAG_1 (label) | |
237 | ||
9aa8a1df NB |
238 | /* Flag strings given by __FUNCTION__ and __PRETTY_FUNCTION__ for a |
239 | warning if they undergo concatenation. */ | |
240 | #define C_ARTIFICIAL_STRING_P(NODE) TREE_LANG_FLAG_0 (NODE) | |
241 | ||
ab76ca54 MM |
242 | typedef enum c_language_kind |
243 | { | |
244 | clk_c, /* A dialect of C: K&R C, ANSI/ISO C89, C2000, | |
2ba84f36 | 245 | etc. */ |
ab76ca54 MM |
246 | clk_cplusplus, /* ANSI/ISO C++ */ |
247 | clk_objective_c /* Objective C */ | |
21c7361e | 248 | } |
ab76ca54 MM |
249 | c_language_kind; |
250 | ||
ae499cce MM |
251 | /* Information about a statement tree. */ |
252 | ||
253 | struct stmt_tree_s { | |
254 | /* The last statement added to the tree. */ | |
255 | tree x_last_stmt; | |
256 | /* The type of the last expression statement. (This information is | |
257 | needed to implement the statement-expression extension.) */ | |
258 | tree x_last_expr_type; | |
259 | /* In C++, Non-zero if we should treat statements as full | |
260 | expressions. In particular, this variable is no-zero if at the | |
261 | end of a statement we should destroy any temporaries created | |
262 | during that statement. Similarly, if, at the end of a block, we | |
263 | should destroy any local variables in this block. Normally, this | |
264 | variable is non-zero, since those are the normal semantics of | |
265 | C++. | |
266 | ||
267 | However, in order to represent aggregate initialization code as | |
268 | tree structure, we use statement-expressions. The statements | |
269 | within the statement expression should not result in cleanups | |
21c7361e | 270 | being run until the entire enclosing statement is complete. |
ae499cce MM |
271 | |
272 | This flag has no effect in C. */ | |
21c7361e | 273 | int stmts_are_full_exprs_p; |
ae499cce MM |
274 | }; |
275 | ||
276 | typedef struct stmt_tree_s *stmt_tree; | |
277 | ||
278 | /* Global state pertinent to the current function. Some C dialects | |
279 | extend this structure with additional fields. */ | |
280 | ||
281 | struct language_function { | |
282 | /* While we are parsing the function, this contains information | |
283 | about the statement-tree that we are building. */ | |
284 | struct stmt_tree_s x_stmt_tree; | |
8f17b5c5 MM |
285 | /* The stack of SCOPE_STMTs for the current function. */ |
286 | tree x_scope_stmt_stack; | |
ae499cce MM |
287 | }; |
288 | ||
289 | /* When building a statement-tree, this is the last statement added to | |
290 | the tree. */ | |
291 | ||
292 | #define last_tree (current_stmt_tree ()->x_last_stmt) | |
293 | ||
294 | /* The type of the last expression-statement we have seen. */ | |
295 | ||
296 | #define last_expr_type (current_stmt_tree ()->x_last_expr_type) | |
297 | ||
8f17b5c5 MM |
298 | /* LAST_TREE contains the last statement parsed. These are chained |
299 | together through the TREE_CHAIN field, but often need to be | |
300 | re-organized since the parse is performed bottom-up. This macro | |
301 | makes LAST_TREE the indicated SUBSTMT of STMT. */ | |
302 | ||
303 | #define RECHAIN_STMTS(stmt, substmt) \ | |
304 | do { \ | |
305 | substmt = TREE_CHAIN (stmt); \ | |
306 | TREE_CHAIN (stmt) = NULL_TREE; \ | |
307 | last_tree = stmt; \ | |
308 | } while (0) | |
309 | ||
310 | /* Language-specific hooks. */ | |
311 | ||
312 | extern int (*lang_statement_code_p) PARAMS ((enum tree_code)); | |
313 | extern void (*lang_expand_stmt) PARAMS ((tree)); | |
314 | extern void (*lang_expand_decl_stmt) PARAMS ((tree)); | |
315 | extern void (*lang_expand_function_end) PARAMS ((void)); | |
316 | ||
21c7361e AJ |
317 | /* Callback that determines if it's ok for a function to have no |
318 | noreturn attribute. */ | |
319 | extern int (*lang_missing_noreturn_ok_p) PARAMS ((tree)); | |
320 | ||
321 | ||
ae499cce | 322 | extern stmt_tree current_stmt_tree PARAMS ((void)); |
8f17b5c5 | 323 | extern tree *current_scope_stmt_stack PARAMS ((void)); |
ae499cce | 324 | extern void begin_stmt_tree PARAMS ((tree *)); |
56cb9733 | 325 | extern tree add_stmt PARAMS ((tree)); |
8f17b5c5 MM |
326 | extern void add_decl_stmt PARAMS ((tree)); |
327 | extern tree add_scope_stmt PARAMS ((int, int)); | |
ae499cce MM |
328 | extern void finish_stmt_tree PARAMS ((tree *)); |
329 | ||
330 | extern int statement_code_p PARAMS ((enum tree_code)); | |
ae499cce MM |
331 | extern tree walk_stmt_tree PARAMS ((tree *, |
332 | walk_tree_fn, | |
333 | void *)); | |
54f7877c | 334 | extern void prep_stmt PARAMS ((tree)); |
54f7877c | 335 | extern void expand_stmt PARAMS ((tree)); |
8f17b5c5 | 336 | extern void mark_stmt_tree PARAMS ((void *)); |
26f943fd NB |
337 | extern void shadow_warning PARAMS ((const char *, |
338 | tree, tree)); | |
ae499cce | 339 | |
8f17b5c5 MM |
340 | /* Extra information associated with a DECL. Other C dialects extend |
341 | this structure in various ways. The C front-end only uses this | |
342 | structure for FUNCTION_DECLs; all other DECLs have a NULL | |
343 | DECL_LANG_SPECIFIC field. */ | |
56cb9733 | 344 | |
8f17b5c5 | 345 | struct c_lang_decl { |
31ed8fea | 346 | unsigned declared_inline : 1; |
8f17b5c5 MM |
347 | }; |
348 | ||
b850de4f MM |
349 | /* In a FUNCTION_DECL for which DECL_BUILT_IN does not hold, this is |
350 | the approximate number of statements in this function. There is | |
351 | no need for this number to be exact; it is only used in various | |
352 | heuristics regarding optimization. */ | |
353 | #define DECL_NUM_STMTS(NODE) \ | |
354 | (FUNCTION_DECL_CHECK (NODE)->decl.u1.i) | |
8f17b5c5 MM |
355 | |
356 | extern void c_mark_lang_decl PARAMS ((struct c_lang_decl *)); | |
56cb9733 | 357 | |
ab76ca54 MM |
358 | /* The variant of the C language being processed. Each C language |
359 | front-end defines this variable. */ | |
360 | ||
361 | extern c_language_kind c_language; | |
362 | ||
363 | /* Nonzero means give string constants the type `const char *', rather | |
364 | than `char *'. */ | |
365 | ||
366 | extern int flag_const_strings; | |
367 | ||
eaa7c03f JM |
368 | /* Nonzero means give `double' the same size as `float'. */ |
369 | ||
370 | extern int flag_short_double; | |
371 | ||
372 | /* Nonzero means give `wchar_t' the same size as `short'. */ | |
373 | ||
374 | extern int flag_short_wchar; | |
375 | ||
2ba84f36 | 376 | /* Warn about *printf or *scanf format/argument anomalies. */ |
ab76ca54 MM |
377 | |
378 | extern int warn_format; | |
379 | ||
4d808927 JM |
380 | /* Warn about Y2K problems with strftime formats. */ |
381 | ||
382 | extern int warn_format_y2k; | |
383 | ||
384 | /* Warn about excess arguments to formats. */ | |
385 | ||
386 | extern int warn_format_extra_args; | |
387 | ||
388 | /* Warn about non-literal format arguments. */ | |
389 | ||
390 | extern int warn_format_nonliteral; | |
391 | ||
c907e684 JM |
392 | /* Warn about possible security problems with calls to format functions. */ |
393 | ||
394 | extern int warn_format_security; | |
395 | ||
2683ed8d BS |
396 | /* Warn about possible violations of sequence point rules. */ |
397 | ||
398 | extern int warn_sequence_point; | |
399 | ||
74ff4629 JM |
400 | /* Warn about functions which might be candidates for format attributes. */ |
401 | ||
402 | extern int warn_missing_format_attribute; | |
403 | ||
0213a355 JM |
404 | /* Nonzero means warn about sizeof (function) or addition/subtraction |
405 | of function pointers. */ | |
406 | ||
407 | extern int warn_pointer_arith; | |
408 | ||
6c36d76b NB |
409 | /* Nonzero means to warn about compile-time division by zero. */ |
410 | extern int warn_div_by_zero; | |
411 | ||
ab76ca54 MM |
412 | /* Nonzero means do some things the same way PCC does. */ |
413 | ||
414 | extern int flag_traditional; | |
415 | ||
eaf299c6 | 416 | /* Nonzero means enable C89 Amendment 1 features. */ |
b8458e3e JM |
417 | |
418 | extern int flag_isoc94; | |
419 | ||
ab76ca54 MM |
420 | /* Nonzero means use the ISO C99 dialect of C. */ |
421 | ||
422 | extern int flag_isoc99; | |
423 | ||
93e2382f JM |
424 | /* Nonzero means environment is hosted (i.e., not freestanding) */ |
425 | ||
426 | extern int flag_hosted; | |
427 | ||
428 | /* Nonzero means add default format_arg attributes for functions not | |
429 | in ISO C. */ | |
430 | ||
431 | extern int flag_noniso_default_format_attributes; | |
432 | ||
6bcedb4e MM |
433 | /* Nonzero means don't recognize any builtin functions. */ |
434 | ||
435 | extern int flag_no_builtin; | |
436 | ||
437 | /* Nonzero means don't recognize the non-ANSI builtin functions. | |
438 | -ansi sets this. */ | |
439 | ||
440 | extern int flag_no_nonansi_builtin; | |
441 | ||
ab76ca54 MM |
442 | /* Nonzero means warn about suggesting putting in ()'s. */ |
443 | ||
444 | extern int warn_parentheses; | |
445 | ||
446 | /* Warn if a type conversion is done that might have confusing results. */ | |
447 | ||
448 | extern int warn_conversion; | |
449 | ||
20d380b1 JM |
450 | /* Nonzero means warn about usage of long long, |
451 | when `-pedantic' and not C99. */ | |
452 | ||
453 | extern int warn_long_long; | |
454 | ||
ab76ca54 MM |
455 | /* C types are partitioned into three subsets: object, function, and |
456 | incomplete types. */ | |
457 | #define C_TYPE_OBJECT_P(type) \ | |
458 | (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type)) | |
459 | ||
460 | #define C_TYPE_INCOMPLETE_P(type) \ | |
461 | (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type) == 0) | |
462 | ||
463 | #define C_TYPE_FUNCTION_P(type) \ | |
464 | (TREE_CODE (type) == FUNCTION_TYPE) | |
465 | ||
466 | /* For convenience we define a single macro to identify the class of | |
467 | object or incomplete types. */ | |
468 | #define C_TYPE_OBJECT_OR_INCOMPLETE_P(type) \ | |
469 | (!C_TYPE_FUNCTION_P (type)) | |
470 | ||
471 | /* Record in each node resulting from a binary operator | |
472 | what operator was specified for it. */ | |
473 | #define C_EXP_ORIGINAL_CODE(exp) ((enum tree_code) TREE_COMPLEXITY (exp)) | |
474 | ||
0ba8a114 | 475 | /* Pointer to function to lazily generate the VAR_DECL for __FUNCTION__ etc. |
2ce07e2d NS |
476 | ID is the identifier to use, NAME is the string. |
477 | TYPE_DEP indicates whether it depends on type of the function or not | |
478 | (i.e. __PRETTY_FUNCTION__). */ | |
479 | ||
0ba8a114 | 480 | extern tree (*make_fname_decl) PARAMS ((tree, int)); |
2ce07e2d | 481 | |
5fd8e536 | 482 | extern tree identifier_global_value PARAMS ((tree)); |
eaa7c03f JM |
483 | extern void record_builtin_type PARAMS ((enum rid, |
484 | const char *, tree)); | |
485 | extern tree build_void_list_node PARAMS ((void)); | |
0ba8a114 NS |
486 | extern void start_fname_decls PARAMS ((void)); |
487 | extern void finish_fname_decls PARAMS ((void)); | |
488 | extern const char *fname_as_string PARAMS ((int)); | |
489 | extern tree fname_decl PARAMS ((unsigned, tree)); | |
490 | extern const char *fname_string PARAMS ((unsigned)); | |
59387d2e | 491 | |
80a497e4 | 492 | extern void check_function_format PARAMS ((int *, tree, tree)); |
4d808927 | 493 | extern void set_Wformat PARAMS ((int)); |
91d231cb JM |
494 | extern tree handle_format_attribute PARAMS ((tree *, tree, tree, |
495 | int, bool *)); | |
496 | extern tree handle_format_arg_attribute PARAMS ((tree *, tree, tree, | |
497 | int, bool *)); | |
6431177a | 498 | extern void c_common_insert_default_attributes PARAMS ((tree)); |
6e090c76 | 499 | extern void c_apply_type_quals_to_decl PARAMS ((int, tree)); |
0213a355 JM |
500 | extern tree c_sizeof PARAMS ((tree)); |
501 | extern tree c_alignof PARAMS ((tree)); | |
502 | extern tree c_alignof_expr PARAMS ((tree)); | |
7f4edbcb BS |
503 | /* Print an error message for invalid operands to arith operation CODE. |
504 | NOP_EXPR is used as a special case (see truthvalue_conversion). */ | |
6e090c76 | 505 | extern void binary_op_error PARAMS ((enum tree_code)); |
64094f6a | 506 | extern tree c_expand_expr_stmt PARAMS ((tree)); |
8f17b5c5 MM |
507 | extern void c_expand_start_cond PARAMS ((tree, int)); |
508 | extern void c_finish_then PARAMS ((void)); | |
6e090c76 | 509 | extern void c_expand_start_else PARAMS ((void)); |
8f17b5c5 | 510 | extern void c_finish_else PARAMS ((void)); |
6e090c76 | 511 | extern void c_expand_end_cond PARAMS ((void)); |
7f4edbcb | 512 | /* Validate the expression after `case' and apply default promotions. */ |
6e090c76 | 513 | extern tree check_case_value PARAMS ((tree)); |
7f4edbcb | 514 | /* Concatenate a list of STRING_CST nodes into one STRING_CST. */ |
6e090c76 KG |
515 | extern tree combine_strings PARAMS ((tree)); |
516 | extern void constant_expression_warning PARAMS ((tree)); | |
517 | extern tree convert_and_check PARAMS ((tree, tree)); | |
518 | extern void overflow_warning PARAMS ((tree)); | |
519 | extern void unsigned_conversion_warning PARAMS ((tree, tree)); | |
ab76ca54 | 520 | |
7f4edbcb | 521 | /* Read the rest of the current #-directive line. */ |
6e090c76 | 522 | extern char *get_directive_line PARAMS ((void)); |
7f4edbcb | 523 | #define GET_DIRECTIVE_LINE() get_directive_line () |
7f4edbcb BS |
524 | |
525 | /* Subroutine of build_binary_op, used for comparison operations. | |
526 | See if the operands have both been converted from subword integer types | |
527 | and, if so, perhaps change them both back to their original type. */ | |
6e090c76 | 528 | extern tree shorten_compare PARAMS ((tree *, tree *, tree *, enum tree_code *)); |
7f4edbcb | 529 | |
50e60bc3 ZW |
530 | extern unsigned int min_precision PARAMS ((tree, int)); |
531 | ||
532 | /* Add qualifiers to a type, in the fashion for C. */ | |
533 | extern tree c_build_qualified_type PARAMS ((tree, int)); | |
534 | ||
7f4edbcb BS |
535 | /* Build tree nodes and builtin functions common to both C and C++ language |
536 | frontends. */ | |
6bcedb4e | 537 | extern void c_common_nodes_and_builtins PARAMS ((void)); |
d3707adb | 538 | |
7d14c755 JM |
539 | extern void disable_builtin_function PARAMS ((const char *)); |
540 | ||
6e090c76 | 541 | extern tree build_va_arg PARAMS ((tree, tree)); |
7e8176d7 | 542 | |
4d6baafa NB |
543 | extern void c_common_init_options PARAMS ((enum c_language_kind)); |
544 | extern void c_common_post_options PARAMS ((void)); | |
545 | extern const char *c_common_init PARAMS ((const char *)); | |
22703ccc | 546 | extern void c_common_finish PARAMS ((void)); |
8ac61af7 | 547 | extern HOST_WIDE_INT c_common_get_alias_set PARAMS ((tree)); |
d72040f5 | 548 | extern bool c_promoting_integer_type_p PARAMS ((tree)); |
6e090c76 KG |
549 | extern int self_promoting_args_p PARAMS ((tree)); |
550 | extern tree simple_type_promotes_to PARAMS ((tree)); | |
0a7394bc | 551 | extern tree strip_array_types PARAMS ((tree)); |
d7e7759d | 552 | |
ae499cce MM |
553 | /* These macros provide convenient access to the various _STMT nodes. */ |
554 | ||
555 | /* Nonzero if this statement should be considered a full-expression, | |
556 | i.e., if temporaries created during this statement should have | |
557 | their destructors run at the end of this statement. (In C, this | |
558 | will always be false, since there are no destructors.) */ | |
559 | #define STMT_IS_FULL_EXPR_P(NODE) TREE_LANG_FLAG_1 ((NODE)) | |
35b1567d | 560 | |
ff7cc307 | 561 | /* IF_STMT accessors. These give access to the condition of the if |
35b1567d | 562 | statement, the then block of the if statement, and the else block |
684d9f3b | 563 | of the if statement if it exists. */ |
d7e7759d BC |
564 | #define IF_COND(NODE) TREE_OPERAND (IF_STMT_CHECK (NODE), 0) |
565 | #define THEN_CLAUSE(NODE) TREE_OPERAND (IF_STMT_CHECK (NODE), 1) | |
566 | #define ELSE_CLAUSE(NODE) TREE_OPERAND (IF_STMT_CHECK (NODE), 2) | |
35b1567d | 567 | |
ff7cc307 | 568 | /* WHILE_STMT accessors. These give access to the condition of the |
2ba84f36 | 569 | while statement and the body of the while statement, respectively. */ |
d7e7759d BC |
570 | #define WHILE_COND(NODE) TREE_OPERAND (WHILE_STMT_CHECK (NODE), 0) |
571 | #define WHILE_BODY(NODE) TREE_OPERAND (WHILE_STMT_CHECK (NODE), 1) | |
35b1567d BC |
572 | |
573 | /* DO_STMT accessors. These give access to the condition of the do | |
2ba84f36 | 574 | statement and the body of the do statement, respectively. */ |
d7e7759d BC |
575 | #define DO_COND(NODE) TREE_OPERAND (DO_STMT_CHECK (NODE), 0) |
576 | #define DO_BODY(NODE) TREE_OPERAND (DO_STMT_CHECK (NODE), 1) | |
35b1567d | 577 | |
0d97bf4c JM |
578 | /* RETURN_STMT accessors. These give the expression associated with a |
579 | return statement, and whether it should be ignored when expanding | |
580 | (as opposed to inlining). */ | |
d7e7759d | 581 | #define RETURN_EXPR(NODE) TREE_OPERAND (RETURN_STMT_CHECK (NODE), 0) |
35b1567d BC |
582 | |
583 | /* EXPR_STMT accessor. This gives the expression associated with an | |
2ba84f36 | 584 | expression statement. */ |
d7e7759d | 585 | #define EXPR_STMT_EXPR(NODE) TREE_OPERAND (EXPR_STMT_CHECK (NODE), 0) |
35b1567d BC |
586 | |
587 | /* FOR_STMT accessors. These give access to the init statement, | |
588 | condition, update expression, and body of the for statement, | |
2ba84f36 | 589 | respectively. */ |
d7e7759d BC |
590 | #define FOR_INIT_STMT(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 0) |
591 | #define FOR_COND(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 1) | |
592 | #define FOR_EXPR(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 2) | |
593 | #define FOR_BODY(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 3) | |
35b1567d BC |
594 | |
595 | /* SWITCH_STMT accessors. These give access to the condition and body | |
2ba84f36 | 596 | of the switch statement, respectively. */ |
d7e7759d BC |
597 | #define SWITCH_COND(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 0) |
598 | #define SWITCH_BODY(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 1) | |
35b1567d BC |
599 | |
600 | /* CASE_LABEL accessors. These give access to the high and low values | |
2ba84f36 | 601 | of a case label, respectively. */ |
d7e7759d BC |
602 | #define CASE_LOW(NODE) TREE_OPERAND (CASE_LABEL_CHECK (NODE), 0) |
603 | #define CASE_HIGH(NODE) TREE_OPERAND (CASE_LABEL_CHECK (NODE), 1) | |
56cb9733 | 604 | #define CASE_LABEL_DECL(NODE) TREE_OPERAND (CASE_LABEL_CHECK (NODE), 2) |
35b1567d BC |
605 | |
606 | /* GOTO_STMT accessor. This gives access to the label associated with | |
2ba84f36 | 607 | a goto statement. */ |
d7e7759d | 608 | #define GOTO_DESTINATION(NODE) TREE_OPERAND (GOTO_STMT_CHECK (NODE), 0) |
db4a8254 JH |
609 | /* True for goto created artifically by the compiler. */ |
610 | #define GOTO_FAKE_P(NODE) (TREE_LANG_FLAG_0 (GOTO_STMT_CHECK (NODE))) | |
35b1567d BC |
611 | |
612 | /* COMPOUND_STMT accessor. This gives access to the TREE_LIST of | |
684d9f3b JM |
613 | statements associated with a compound statement. The result is the |
614 | first statement in the list. Succeeding nodes can be accessed by | |
2ba84f36 | 615 | calling TREE_CHAIN on a node in the list. */ |
d7e7759d | 616 | #define COMPOUND_BODY(NODE) TREE_OPERAND (COMPOUND_STMT_CHECK (NODE), 0) |
35b1567d BC |
617 | |
618 | /* ASM_STMT accessors. ASM_STRING returns a STRING_CST for the | |
619 | instruction (e.g., "mov x, y"). ASM_OUTPUTS, ASM_INPUTS, and | |
620 | ASM_CLOBBERS represent the outputs, inputs, and clobbers for the | |
2ba84f36 | 621 | statement. */ |
d7e7759d BC |
622 | #define ASM_CV_QUAL(NODE) TREE_OPERAND (ASM_STMT_CHECK (NODE), 0) |
623 | #define ASM_STRING(NODE) TREE_OPERAND (ASM_STMT_CHECK (NODE), 1) | |
624 | #define ASM_OUTPUTS(NODE) TREE_OPERAND (ASM_STMT_CHECK (NODE), 2) | |
625 | #define ASM_INPUTS(NODE) TREE_OPERAND (ASM_STMT_CHECK (NODE), 3) | |
626 | #define ASM_CLOBBERS(NODE) TREE_OPERAND (ASM_STMT_CHECK (NODE), 4) | |
35b1567d BC |
627 | |
628 | /* DECL_STMT accessor. This gives access to the DECL associated with | |
2ba84f36 | 629 | the given declaration statement. */ |
d7e7759d | 630 | #define DECL_STMT_DECL(NODE) TREE_OPERAND (DECL_STMT_CHECK (NODE), 0) |
35b1567d | 631 | |
2ba84f36 | 632 | /* STMT_EXPR accessor. */ |
d7e7759d | 633 | #define STMT_EXPR_STMT(NODE) TREE_OPERAND (STMT_EXPR_CHECK (NODE), 0) |
35b1567d BC |
634 | |
635 | /* LABEL_STMT accessor. This gives access to the label associated with | |
2ba84f36 | 636 | the given label statement. */ |
d7e7759d BC |
637 | #define LABEL_STMT_LABEL(NODE) TREE_OPERAND (LABEL_STMT_CHECK (NODE), 0) |
638 | ||
db3acfa5 JM |
639 | /* COMPOUND_LITERAL_EXPR accessor. */ |
640 | #define COMPOUND_LITERAL_EXPR_DECL(NODE) \ | |
641 | TREE_OPERAND (COMPOUND_LITERAL_EXPR_CHECK (NODE), 0) | |
642 | ||
d7e7759d BC |
643 | /* Nonzero if this SCOPE_STMT is for the beginning of a scope. */ |
644 | #define SCOPE_BEGIN_P(NODE) \ | |
21c7361e | 645 | (TREE_LANG_FLAG_0 (SCOPE_STMT_CHECK (NODE))) |
d7e7759d BC |
646 | |
647 | /* Nonzero if this SCOPE_STMT is for the end of a scope. */ | |
648 | #define SCOPE_END_P(NODE) \ | |
649 | (!SCOPE_BEGIN_P (SCOPE_STMT_CHECK (NODE))) | |
650 | ||
651 | /* The BLOCK containing the declarations contained in this scope. */ | |
652 | #define SCOPE_STMT_BLOCK(NODE) \ | |
653 | (TREE_OPERAND (SCOPE_STMT_CHECK (NODE), 0)) | |
654 | ||
655 | /* Nonzero for a SCOPE_STMT if there were no variables in this scope. */ | |
656 | #define SCOPE_NULLIFIED_P(NODE) \ | |
657 | (SCOPE_STMT_BLOCK ((NODE)) == NULL_TREE) | |
658 | ||
659 | /* Nonzero for a SCOPE_STMT which represents a lexical scope, but | |
ff7cc307 | 660 | which should be treated as non-existent from the point of view of |
d7e7759d BC |
661 | running cleanup actions. */ |
662 | #define SCOPE_NO_CLEANUPS_P(NODE) \ | |
663 | (TREE_LANG_FLAG_3 (SCOPE_STMT_CHECK (NODE))) | |
664 | ||
665 | /* Nonzero for a SCOPE_STMT if this statement is for a partial scope. | |
666 | For example, in: | |
21c7361e | 667 | |
d7e7759d BC |
668 | S s; |
669 | l: | |
670 | S s2; | |
671 | goto l; | |
672 | ||
673 | there is (implicitly) a new scope after `l', even though there are | |
674 | no curly braces. In particular, when we hit the goto, we must | |
675 | destroy s2 and then re-construct it. For the implicit scope, | |
676 | SCOPE_PARTIAL_P will be set. */ | |
677 | #define SCOPE_PARTIAL_P(NODE) \ | |
678 | (TREE_LANG_FLAG_4 (SCOPE_STMT_CHECK (NODE))) | |
679 | ||
680 | /* Nonzero for an ASM_STMT if the assembly statement is volatile. */ | |
681 | #define ASM_VOLATILE_P(NODE) \ | |
682 | (ASM_CV_QUAL (ASM_STMT_CHECK (NODE)) != NULL_TREE) | |
683 | ||
684 | /* The line-number at which a statement began. But if | |
685 | STMT_LINENO_FOR_FN_P does holds, then this macro gives the | |
686 | line number for the end of the current function instead. */ | |
687 | #define STMT_LINENO(NODE) \ | |
688 | (TREE_COMPLEXITY ((NODE))) | |
689 | ||
690 | /* If non-zero, the STMT_LINENO for NODE is the line at which the | |
691 | function ended. */ | |
21c7361e | 692 | #define STMT_LINENO_FOR_FN_P(NODE) \ |
d7e7759d | 693 | (TREE_LANG_FLAG_2 ((NODE))) |
c7d87c0a | 694 | |
f2c5f623 | 695 | /* Nonzero if we want the new ISO rules for pushing a new scope for `for' |
2ba84f36 | 696 | initialization variables. */ |
21c7361e | 697 | #define NEW_FOR_SCOPE_P(NODE) (TREE_LANG_FLAG_0 (NODE)) |
c7d87c0a | 698 | |
4f78b9a8 RH |
699 | /* Nonzero if we want to create an ASM_INPUT instead of an |
700 | ASM_OPERAND with no operands. */ | |
701 | #define ASM_INPUT_P(NODE) (TREE_LANG_FLAG_0 (NODE)) | |
702 | ||
c7d87c0a BC |
703 | #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) SYM, |
704 | ||
705 | enum c_tree_code { | |
706 | C_DUMMY_TREE_CODE = LAST_AND_UNUSED_TREE_CODE, | |
707 | #include "c-common.def" | |
708 | LAST_C_TREE_CODE | |
709 | }; | |
710 | ||
711 | #undef DEFTREECODE | |
712 | ||
713 | extern void add_c_tree_codes PARAMS ((void)); | |
f2c5f623 | 714 | extern void genrtl_do_pushlevel PARAMS ((void)); |
f2c5f623 BC |
715 | extern void genrtl_goto_stmt PARAMS ((tree)); |
716 | extern void genrtl_expr_stmt PARAMS ((tree)); | |
717 | extern void genrtl_decl_stmt PARAMS ((tree)); | |
718 | extern void genrtl_if_stmt PARAMS ((tree)); | |
719 | extern void genrtl_while_stmt PARAMS ((tree)); | |
720 | extern void genrtl_do_stmt PARAMS ((tree)); | |
721 | extern void genrtl_return_stmt PARAMS ((tree)); | |
722 | extern void genrtl_for_stmt PARAMS ((tree)); | |
723 | extern void genrtl_break_stmt PARAMS ((void)); | |
724 | extern void genrtl_continue_stmt PARAMS ((void)); | |
725 | extern void genrtl_scope_stmt PARAMS ((tree)); | |
726 | extern void genrtl_switch_stmt PARAMS ((tree)); | |
56cb9733 | 727 | extern void genrtl_case_label PARAMS ((tree)); |
4cf88f57 | 728 | extern void genrtl_compound_stmt PARAMS ((tree)); |
f2c5f623 BC |
729 | extern void genrtl_asm_stmt PARAMS ((tree, tree, |
730 | tree, tree, | |
4f78b9a8 | 731 | tree, int)); |
f2c5f623 BC |
732 | extern void genrtl_decl_cleanup PARAMS ((tree, tree)); |
733 | extern int stmts_are_full_exprs_p PARAMS ((void)); | |
f2c5f623 BC |
734 | extern int anon_aggr_type_p PARAMS ((tree)); |
735 | ||
736 | /* For a VAR_DECL that is an anonymous union, these are the various | |
737 | sub-variables that make up the anonymous union. */ | |
738 | #define DECL_ANON_UNION_ELEMS(NODE) DECL_ARGUMENTS ((NODE)) | |
739 | ||
0a7394bc MM |
740 | /* In a FIELD_DECL, nonzero if the decl was originally a bitfield. */ |
741 | #define DECL_C_BIT_FIELD(NODE) \ | |
742 | (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) == 1) | |
743 | #define SET_DECL_C_BIT_FIELD(NODE) \ | |
744 | (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 1) | |
745 | #define CLEAR_DECL_C_BIT_FIELD(NODE) \ | |
746 | (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 0) | |
747 | ||
3645c4dc RH |
748 | /* In a VAR_DECL, nonzero if the decl is a register variable with |
749 | an explicit asm specification. */ | |
750 | #define DECL_C_HARD_REGISTER(DECL) DECL_LANG_FLAG_4 (VAR_DECL_CHECK (DECL)) | |
751 | ||
f2c5f623 BC |
752 | extern void emit_local_var PARAMS ((tree)); |
753 | extern void make_rtl_for_local_static PARAMS ((tree)); | |
754 | extern tree expand_cond PARAMS ((tree)); | |
64094f6a RH |
755 | extern tree c_expand_return PARAMS ((tree)); |
756 | extern tree do_case PARAMS ((tree, tree)); | |
0dfdeca6 | 757 | extern tree build_stmt PARAMS ((enum tree_code, ...)); |
56cb9733 | 758 | extern tree build_case_label PARAMS ((tree, tree, tree)); |
0dfdeca6 BC |
759 | extern tree build_continue_stmt PARAMS ((void)); |
760 | extern tree build_break_stmt PARAMS ((void)); | |
761 | extern tree build_return_stmt PARAMS ((tree)); | |
f2c5f623 BC |
762 | |
763 | #define COMPOUND_STMT_NO_SCOPE(NODE) TREE_LANG_FLAG_0 (NODE) | |
764 | ||
765 | extern void c_expand_asm_operands PARAMS ((tree, tree, tree, tree, int, const char *, int)); | |
ab76ca54 MM |
766 | |
767 | /* These functions must be defined by each front-end which implements | |
768 | a variant of the C language. They are used in c-common.c. */ | |
769 | ||
770 | extern tree build_unary_op PARAMS ((enum tree_code, | |
771 | tree, int)); | |
772 | extern tree build_binary_op PARAMS ((enum tree_code, | |
773 | tree, tree, int)); | |
774 | extern int lvalue_p PARAMS ((tree)); | |
775 | extern tree default_conversion PARAMS ((tree)); | |
776 | ||
777 | /* Given two integer or real types, return the type for their sum. | |
778 | Given two compatible ANSI C types, returns the merged type. */ | |
779 | ||
780 | extern tree common_type PARAMS ((tree, tree)); | |
44835fdd MM |
781 | |
782 | extern tree expand_tree_builtin PARAMS ((tree, tree, tree)); | |
0e5921e8 | 783 | |
56cb9733 MM |
784 | extern tree decl_constant_value PARAMS ((tree)); |
785 | ||
19552aa5 JM |
786 | /* Handle increment and decrement of boolean types. */ |
787 | extern tree boolean_increment PARAMS ((enum tree_code, | |
788 | tree)); | |
789 | ||
0e5921e8 ZW |
790 | /* Hook currently used only by the C++ front end to reset internal state |
791 | after entering or leaving a header file. */ | |
792 | extern void extract_interface_info PARAMS ((void)); | |
793 | ||
8f17b5c5 MM |
794 | extern void mark_c_language_function PARAMS ((struct language_function *)); |
795 | ||
21c7361e | 796 | extern int case_compare PARAMS ((splay_tree_key, |
8f17b5c5 MM |
797 | splay_tree_key)); |
798 | ||
799 | extern tree c_add_case_label PARAMS ((splay_tree, | |
800 | tree, tree, | |
801 | tree)); | |
802 | ||
c70eaeaf KG |
803 | extern tree build_function_call PARAMS ((tree, tree)); |
804 | ||
15b732b2 NB |
805 | extern tree finish_label_address_expr PARAMS ((tree)); |
806 | ||
807 | /* Same function prototype, but the C and C++ front ends have | |
808 | different implementations. Used in c-common.c. */ | |
809 | extern tree lookup_label PARAMS ((tree)); | |
810 | ||
67673f5c MM |
811 | /* If this variable is defined to a non-NULL value, it will be called |
812 | after the file has been completely parsed. The argument will be | |
813 | the GLOBAL_NAMESPACE in C++, or the list of top-level declarations | |
814 | in C. */ | |
815 | extern void (*back_end_hook) PARAMS ((tree)); | |
816 | ||
ac79cd5a | 817 | /* enum expand_modified is in expr.h, as is the macro below. */ |
8f17b5c5 | 818 | |
ac79cd5a RK |
819 | #ifdef QUEUED_VAR |
820 | extern rtx c_expand_expr PARAMS ((tree, rtx, enum machine_mode, | |
821 | enum expand_modifier)); | |
822 | #endif | |
8f17b5c5 MM |
823 | |
824 | extern int c_safe_from_p PARAMS ((rtx, tree)); | |
8f17b5c5 | 825 | |
db3acfa5 JM |
826 | extern int c_staticp PARAMS ((tree)); |
827 | ||
3fe30ff6 RH |
828 | extern int c_unsafe_for_reeval PARAMS ((tree)); |
829 | ||
0e5921e8 ZW |
830 | /* Information recorded about each file examined during compilation. */ |
831 | ||
832 | struct c_fileinfo | |
833 | { | |
834 | int time; /* Time spent in the file. */ | |
835 | short interface_only; /* Flags - used only by C++ */ | |
836 | short interface_unknown; | |
837 | }; | |
838 | ||
839 | struct c_fileinfo *get_fileinfo PARAMS ((const char *)); | |
840 | extern void dump_time_statistics PARAMS ((void)); | |
841 | ||
88657302 | 842 | #endif /* ! GCC_C_COMMON_H */ |