Daily bump.
[official-gcc.git] / gcc / system.h
blob92b045c1a5e9f450148f31abba83891cbc66c530
1 /* Get common system includes and various definitions and declarations based
2 on autoconf macros.
3 Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007
4 Free Software Foundation, Inc.
6 This file is part of GCC.
8 GCC is free software; you can redistribute it and/or modify it under
9 the terms of the GNU General Public License as published by the Free
10 Software Foundation; either version 3, or (at your option) any later
11 version.
13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 for more details.
18 You should have received a copy of the GNU General Public License
19 along with GCC; see the file COPYING3. If not see
20 <http://www.gnu.org/licenses/>. */
23 #ifndef GCC_SYSTEM_H
24 #define GCC_SYSTEM_H
26 /* We must include stdarg.h before stdio.h. */
27 #include <stdarg.h>
29 #ifndef va_copy
30 # ifdef __va_copy
31 # define va_copy(d,s) __va_copy((d),(s))
32 # else
33 # define va_copy(d,s) ((d) = (s))
34 # endif
35 #endif
37 #ifdef HAVE_STDDEF_H
38 # include <stddef.h>
39 #endif
41 #include <stdio.h>
43 /* Define a generic NULL if one hasn't already been defined. */
44 #ifndef NULL
45 #define NULL 0
46 #endif
48 /* Use the unlocked open routines from libiberty. */
49 #define fopen(PATH,MODE) fopen_unlocked(PATH,MODE)
50 #define fdopen(FILDES,MODE) fdopen_unlocked(FILDES,MODE)
51 #define freopen(PATH,MODE,STREAM) freopen_unlocked(PATH,MODE,STREAM)
53 /* The compiler is not a multi-threaded application and therefore we
54 do not have to use the locking functions. In fact, using the locking
55 functions can cause the compiler to be significantly slower under
56 I/O bound conditions (such as -g -O0 on very large source files).
58 HAVE_DECL_PUTC_UNLOCKED actually indicates whether or not the stdio
59 code is multi-thread safe by default. If it is set to 0, then do
60 not worry about using the _unlocked functions.
62 fputs_unlocked, fwrite_unlocked, and fprintf_unlocked are
63 extensions and need to be prototyped by hand (since we do not
64 define _GNU_SOURCE). */
66 #if defined HAVE_DECL_PUTC_UNLOCKED && HAVE_DECL_PUTC_UNLOCKED
68 # ifdef HAVE_PUTC_UNLOCKED
69 # undef putc
70 # define putc(C, Stream) putc_unlocked (C, Stream)
71 # endif
72 # ifdef HAVE_PUTCHAR_UNLOCKED
73 # undef putchar
74 # define putchar(C) putchar_unlocked (C)
75 # endif
76 # ifdef HAVE_GETC_UNLOCKED
77 # undef getc
78 # define getc(Stream) getc_unlocked (Stream)
79 # endif
80 # ifdef HAVE_GETCHAR_UNLOCKED
81 # undef getchar
82 # define getchar() getchar_unlocked ()
83 # endif
84 # ifdef HAVE_FPUTC_UNLOCKED
85 # undef fputc
86 # define fputc(C, Stream) fputc_unlocked (C, Stream)
87 # endif
89 # ifdef HAVE_CLEARERR_UNLOCKED
90 # undef clearerr
91 # define clearerr(Stream) clearerr_unlocked (Stream)
92 # if defined (HAVE_DECL_CLEARERR_UNLOCKED) && !HAVE_DECL_CLEARERR_UNLOCKED
93 extern void clearerr_unlocked (FILE *);
94 # endif
95 # endif
96 # ifdef HAVE_FEOF_UNLOCKED
97 # undef feof
98 # define feof(Stream) feof_unlocked (Stream)
99 # if defined (HAVE_DECL_FEOF_UNLOCKED) && !HAVE_DECL_FEOF_UNLOCKED
100 extern int feof_unlocked (FILE *);
101 # endif
102 # endif
103 # ifdef HAVE_FILENO_UNLOCKED
104 # undef fileno
105 # define fileno(Stream) fileno_unlocked (Stream)
106 # if defined (HAVE_DECL_FILENO_UNLOCKED) && !HAVE_DECL_FILENO_UNLOCKED
107 extern int fileno_unlocked (FILE *);
108 # endif
109 # endif
110 # ifdef HAVE_FFLUSH_UNLOCKED
111 # undef fflush
112 # define fflush(Stream) fflush_unlocked (Stream)
113 # if defined (HAVE_DECL_FFLUSH_UNLOCKED) && !HAVE_DECL_FFLUSH_UNLOCKED
114 extern int fflush_unlocked (FILE *);
115 # endif
116 # endif
117 # ifdef HAVE_FGETC_UNLOCKED
118 # undef fgetc
119 # define fgetc(Stream) fgetc_unlocked (Stream)
120 # if defined (HAVE_DECL_FGETC_UNLOCKED) && !HAVE_DECL_FGETC_UNLOCKED
121 extern int fgetc_unlocked (FILE *);
122 # endif
123 # endif
124 # ifdef HAVE_FGETS_UNLOCKED
125 # undef fgets
126 # define fgets(S, n, Stream) fgets_unlocked (S, n, Stream)
127 # if defined (HAVE_DECL_FGETS_UNLOCKED) && !HAVE_DECL_FGETS_UNLOCKED
128 extern char *fgets_unlocked (char *, int, FILE *);
129 # endif
130 # endif
131 # ifdef HAVE_FPUTS_UNLOCKED
132 # undef fputs
133 # define fputs(String, Stream) fputs_unlocked (String, Stream)
134 # if defined (HAVE_DECL_FPUTS_UNLOCKED) && !HAVE_DECL_FPUTS_UNLOCKED
135 extern int fputs_unlocked (const char *, FILE *);
136 # endif
137 # endif
138 # ifdef HAVE_FERROR_UNLOCKED
139 # undef ferror
140 # define ferror(Stream) ferror_unlocked (Stream)
141 # if defined (HAVE_DECL_FERROR_UNLOCKED) && !HAVE_DECL_FERROR_UNLOCKED
142 extern int ferror_unlocked (FILE *);
143 # endif
144 # endif
145 # ifdef HAVE_FREAD_UNLOCKED
146 # undef fread
147 # define fread(Ptr, Size, N, Stream) fread_unlocked (Ptr, Size, N, Stream)
148 # if defined (HAVE_DECL_FREAD_UNLOCKED) && !HAVE_DECL_FREAD_UNLOCKED
149 extern size_t fread_unlocked (void *, size_t, size_t, FILE *);
150 # endif
151 # endif
152 # ifdef HAVE_FWRITE_UNLOCKED
153 # undef fwrite
154 # define fwrite(Ptr, Size, N, Stream) fwrite_unlocked (Ptr, Size, N, Stream)
155 # if defined (HAVE_DECL_FWRITE_UNLOCKED) && !HAVE_DECL_FWRITE_UNLOCKED
156 extern size_t fwrite_unlocked (const void *, size_t, size_t, FILE *);
157 # endif
158 # endif
159 # ifdef HAVE_FPRINTF_UNLOCKED
160 # undef fprintf
161 /* We can't use a function-like macro here because we don't know if
162 we have varargs macros. */
163 # define fprintf fprintf_unlocked
164 # if defined (HAVE_DECL_FPRINTF_UNLOCKED) && !HAVE_DECL_FPRINTF_UNLOCKED
165 extern int fprintf_unlocked (FILE *, const char *, ...);
166 # endif
167 # endif
169 #endif
171 /* ??? Glibc's fwrite/fread_unlocked macros cause
172 "warning: signed and unsigned type in conditional expression". */
173 #undef fread_unlocked
174 #undef fwrite_unlocked
176 /* There are an extraordinary number of issues with <ctype.h>.
177 The last straw is that it varies with the locale. Use libiberty's
178 replacement instead. */
179 #include <safe-ctype.h>
181 #include <sys/types.h>
183 #include <errno.h>
185 #if !defined (errno) && defined (HAVE_DECL_ERRNO) && !HAVE_DECL_ERRNO
186 extern int errno;
187 #endif
189 /* Some of glibc's string inlines cause warnings. Plus we'd rather
190 rely on (and therefore test) GCC's string builtins. */
191 #define __NO_STRING_INLINES
193 #ifdef STRING_WITH_STRINGS
194 # include <string.h>
195 # include <strings.h>
196 #else
197 # ifdef HAVE_STRING_H
198 # include <string.h>
199 # else
200 # ifdef HAVE_STRINGS_H
201 # include <strings.h>
202 # endif
203 # endif
204 #endif
206 #ifdef HAVE_STDLIB_H
207 # include <stdlib.h>
208 #endif
210 /* If we don't have an overriding definition, set SUCCESS_EXIT_CODE and
211 FATAL_EXIT_CODE to EXIT_SUCCESS and EXIT_FAILURE respectively,
212 or 0 and 1 if those macros are not defined. */
213 #ifndef SUCCESS_EXIT_CODE
214 # ifdef EXIT_SUCCESS
215 # define SUCCESS_EXIT_CODE EXIT_SUCCESS
216 # else
217 # define SUCCESS_EXIT_CODE 0
218 # endif
219 #endif
221 #ifndef FATAL_EXIT_CODE
222 # ifdef EXIT_FAILURE
223 # define FATAL_EXIT_CODE EXIT_FAILURE
224 # else
225 # define FATAL_EXIT_CODE 1
226 # endif
227 #endif
229 #define ICE_EXIT_CODE 4
231 #ifdef HAVE_UNISTD_H
232 # include <unistd.h>
233 #endif
235 #ifdef HAVE_SYS_PARAM_H
236 # include <sys/param.h>
237 /* We use this identifier later and it appears in some vendor param.h's. */
238 # undef PREFETCH
239 #endif
241 #if HAVE_LIMITS_H
242 # include <limits.h>
243 #endif
245 /* Get definitions of HOST_WIDE_INT and HOST_WIDEST_INT. */
246 #include "hwint.h"
248 /* A macro to determine whether a VALUE lies inclusively within a
249 certain range without evaluating the VALUE more than once. This
250 macro won't warn if the VALUE is unsigned and the LOWER bound is
251 zero, as it would e.g. with "VALUE >= 0 && ...". Note the LOWER
252 bound *is* evaluated twice, and LOWER must not be greater than
253 UPPER. However the bounds themselves can be either positive or
254 negative. */
255 #define IN_RANGE(VALUE, LOWER, UPPER) \
256 ((unsigned HOST_WIDE_INT) (VALUE) - (unsigned HOST_WIDE_INT) (LOWER) \
257 <= (unsigned HOST_WIDE_INT) (UPPER) - (unsigned HOST_WIDE_INT) (LOWER))
259 /* Infrastructure for defining missing _MAX and _MIN macros. Note that
260 macros defined with these cannot be used in #if. */
262 /* The extra casts work around common compiler bugs. */
263 #define INTTYPE_SIGNED(t) (! ((t) 0 < (t) -1))
264 /* The outer cast is needed to work around a bug in Cray C 5.0.3.0.
265 It is necessary at least when t == time_t. */
266 #define INTTYPE_MINIMUM(t) ((t) (INTTYPE_SIGNED (t) \
267 ? ~ (t) 0 << (sizeof(t) * CHAR_BIT - 1) : (t) 0))
268 #define INTTYPE_MAXIMUM(t) ((t) (~ (t) 0 - INTTYPE_MINIMUM (t)))
270 /* Use that infrastructure to provide a few constants. */
271 #ifndef UCHAR_MAX
272 # define UCHAR_MAX INTTYPE_MAXIMUM (unsigned char)
273 #endif
275 #ifdef TIME_WITH_SYS_TIME
276 # include <sys/time.h>
277 # include <time.h>
278 #else
279 # if HAVE_SYS_TIME_H
280 # include <sys/time.h>
281 # else
282 # ifdef HAVE_TIME_H
283 # include <time.h>
284 # endif
285 # endif
286 #endif
288 #ifdef HAVE_FCNTL_H
289 # include <fcntl.h>
290 #else
291 # ifdef HAVE_SYS_FILE_H
292 # include <sys/file.h>
293 # endif
294 #endif
296 #ifndef SEEK_SET
297 # define SEEK_SET 0
298 # define SEEK_CUR 1
299 # define SEEK_END 2
300 #endif
301 #ifndef F_OK
302 # define F_OK 0
303 # define X_OK 1
304 # define W_OK 2
305 # define R_OK 4
306 #endif
307 #ifndef O_RDONLY
308 # define O_RDONLY 0
309 #endif
310 #ifndef O_WRONLY
311 # define O_WRONLY 1
312 #endif
314 /* Some systems define these in, e.g., param.h. We undefine these names
315 here to avoid the warnings. We prefer to use our definitions since we
316 know they are correct. */
318 #undef MIN
319 #undef MAX
320 #define MIN(X,Y) ((X) < (Y) ? (X) : (Y))
321 #define MAX(X,Y) ((X) > (Y) ? (X) : (Y))
323 /* Returns the least number N such that N * Y >= X. */
324 #define CEIL(x,y) (((x) + (y) - 1) / (y))
326 #ifdef HAVE_SYS_WAIT_H
327 #include <sys/wait.h>
328 #endif
330 #ifndef WIFSIGNALED
331 #define WIFSIGNALED(S) (((S) & 0xff) != 0 && ((S) & 0xff) != 0x7f)
332 #endif
333 #ifndef WTERMSIG
334 #define WTERMSIG(S) ((S) & 0x7f)
335 #endif
336 #ifndef WIFEXITED
337 #define WIFEXITED(S) (((S) & 0xff) == 0)
338 #endif
339 #ifndef WEXITSTATUS
340 #define WEXITSTATUS(S) (((S) & 0xff00) >> 8)
341 #endif
342 #ifndef WSTOPSIG
343 #define WSTOPSIG WEXITSTATUS
344 #endif
345 #ifndef WCOREDUMP
346 #define WCOREDUMP(S) ((S) & WCOREFLG)
347 #endif
348 #ifndef WCOREFLG
349 #define WCOREFLG 0200
350 #endif
352 /* The HAVE_DECL_* macros are three-state, undefined, 0 or 1. If they
353 are defined to 0 then we must provide the relevant declaration
354 here. These checks will be in the undefined state while configure
355 is running so be careful to test "defined (HAVE_DECL_*)". */
357 #if defined (HAVE_DECL_ATOF) && !HAVE_DECL_ATOF
358 extern double atof (const char *);
359 #endif
361 #if defined (HAVE_DECL_ATOL) && !HAVE_DECL_ATOL
362 extern long atol (const char *);
363 #endif
365 #if defined (HAVE_DECL_FREE) && !HAVE_DECL_FREE
366 extern void free (void *);
367 #endif
369 #if defined (HAVE_DECL_GETCWD) && !HAVE_DECL_GETCWD
370 extern char *getcwd (char *, size_t);
371 #endif
373 #if defined (HAVE_DECL_GETENV) && !HAVE_DECL_GETENV
374 extern char *getenv (const char *);
375 #endif
377 #if defined (HAVE_DECL_GETOPT) && !HAVE_DECL_GETOPT
378 extern int getopt (int, char * const *, const char *);
379 #endif
381 #if defined (HAVE_DECL_GETPAGESIZE) && !HAVE_DECL_GETPAGESIZE
382 extern int getpagesize (void);
383 #endif
385 #if defined (HAVE_DECL_GETWD) && !HAVE_DECL_GETWD
386 extern char *getwd (char *);
387 #endif
389 #if defined (HAVE_DECL_SBRK) && !HAVE_DECL_SBRK
390 extern void *sbrk (int);
391 #endif
393 #if defined (HAVE_DECL_STRSTR) && !HAVE_DECL_STRSTR
394 extern char *strstr (const char *, const char *);
395 #endif
397 #ifdef HAVE_MALLOC_H
398 #include <malloc.h>
399 #endif
401 #if defined (HAVE_DECL_MALLOC) && !HAVE_DECL_MALLOC
402 extern void *malloc (size_t);
403 #endif
405 #if defined (HAVE_DECL_CALLOC) && !HAVE_DECL_CALLOC
406 extern void *calloc (size_t, size_t);
407 #endif
409 #if defined (HAVE_DECL_REALLOC) && !HAVE_DECL_REALLOC
410 extern void *realloc (void *, size_t);
411 #endif
413 /* If the system doesn't provide strsignal, we get it defined in
414 libiberty but no declaration is supplied. */
415 #if !defined (HAVE_STRSIGNAL) \
416 || (defined (HAVE_DECL_STRSIGNAL) && !HAVE_DECL_STRSIGNAL)
417 # ifndef strsignal
418 extern const char *strsignal (int);
419 # endif
420 #endif
422 #ifdef HAVE_GETRLIMIT
423 # if defined (HAVE_DECL_GETRLIMIT) && !HAVE_DECL_GETRLIMIT
424 # ifndef getrlimit
425 struct rlimit;
426 extern int getrlimit (int, struct rlimit *);
427 # endif
428 # endif
429 #endif
431 #ifdef HAVE_SETRLIMIT
432 # if defined (HAVE_DECL_SETRLIMIT) && !HAVE_DECL_SETRLIMIT
433 # ifndef setrlimit
434 struct rlimit;
435 extern int setrlimit (int, const struct rlimit *);
436 # endif
437 # endif
438 #endif
440 #if defined (HAVE_DECL_ABORT) && !HAVE_DECL_ABORT
441 extern void abort (void);
442 #endif
444 #if defined (HAVE_DECL_SNPRINTF) && !HAVE_DECL_SNPRINTF
445 extern int snprintf (char *, size_t, const char *, ...);
446 #endif
448 #if defined (HAVE_DECL_VSNPRINTF) && !HAVE_DECL_VSNPRINTF
449 extern int vsnprintf(char *, size_t, const char *, va_list);
450 #endif
452 /* 1 if we have C99 designated initializers. */
453 #if !defined(HAVE_DESIGNATED_INITIALIZERS)
454 #define HAVE_DESIGNATED_INITIALIZERS \
455 ((GCC_VERSION >= 2007) || (__STDC_VERSION__ >= 199901L))
456 #endif
458 #if HAVE_SYS_STAT_H
459 # include <sys/stat.h>
460 #endif
462 /* Test if something is a normal file. */
463 #ifndef S_ISREG
464 #define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
465 #endif
467 /* Test if something is a directory. */
468 #ifndef S_ISDIR
469 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
470 #endif
472 /* Test if something is a character special file. */
473 #ifndef S_ISCHR
474 #define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR)
475 #endif
477 /* Test if something is a block special file. */
478 #ifndef S_ISBLK
479 #define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK)
480 #endif
482 /* Test if something is a socket. */
483 #ifndef S_ISSOCK
484 # ifdef S_IFSOCK
485 # define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK)
486 # else
487 # define S_ISSOCK(m) 0
488 # endif
489 #endif
491 /* Test if something is a FIFO. */
492 #ifndef S_ISFIFO
493 # ifdef S_IFIFO
494 # define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO)
495 # else
496 # define S_ISFIFO(m) 0
497 # endif
498 #endif
500 /* Define well known filenos if the system does not define them. */
501 #ifndef STDIN_FILENO
502 # define STDIN_FILENO 0
503 #endif
504 #ifndef STDOUT_FILENO
505 # define STDOUT_FILENO 1
506 #endif
507 #ifndef STDERR_FILENO
508 # define STDERR_FILENO 2
509 #endif
511 /* Some systems have mkdir that takes a single argument. */
512 #ifdef MKDIR_TAKES_ONE_ARG
513 # define mkdir(a,b) mkdir(a)
514 #endif
516 /* By default, colon separates directories in a path. */
517 #ifndef PATH_SEPARATOR
518 #define PATH_SEPARATOR ':'
519 #endif
521 /* Filename handling macros. */
522 #include "filenames.h"
524 /* These should be phased out in favor of IS_DIR_SEPARATOR, where possible. */
525 #ifndef DIR_SEPARATOR
526 # define DIR_SEPARATOR '/'
527 # ifdef HAVE_DOS_BASED_FILE_SYSTEM
528 # define DIR_SEPARATOR_2 '\\'
529 # endif
530 #endif
532 /* Get libiberty declarations. */
533 #include "libiberty.h"
535 /* Provide a default for the HOST_BIT_BUCKET.
536 This suffices for POSIX-like hosts. */
538 #ifndef HOST_BIT_BUCKET
539 #define HOST_BIT_BUCKET "/dev/null"
540 #endif
542 /* Be conservative and only use enum bitfields with GCC.
543 FIXME: provide a complete autoconf test for buggy enum bitfields. */
545 #if (GCC_VERSION > 2000)
546 #define ENUM_BITFIELD(TYPE) __extension__ enum TYPE
547 #else
548 #define ENUM_BITFIELD(TYPE) unsigned int
549 #endif
551 #ifndef offsetof
552 #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *) 0)->MEMBER)
553 #endif
555 /* Various error reporting routines want to use __FUNCTION__. */
556 #if (GCC_VERSION < 2007)
557 #ifndef __FUNCTION__
558 #define __FUNCTION__ "?"
559 #endif /* ! __FUNCTION__ */
560 #endif
562 /* __builtin_expect(A, B) evaluates to A, but notifies the compiler that
563 the most likely value of A is B. This feature was added at some point
564 between 2.95 and 3.0. Let's use 3.0 as the lower bound for now. */
565 #if (GCC_VERSION < 3000)
566 #define __builtin_expect(a, b) (a)
567 #endif
569 /* Redefine abort to report an internal error w/o coredump, and
570 reporting the location of the error in the source file. */
571 extern void fancy_abort (const char *, int, const char *) ATTRIBUTE_NORETURN;
572 #define abort() fancy_abort (__FILE__, __LINE__, __FUNCTION__)
574 /* Use gcc_assert(EXPR) to test invariants. */
575 #if ENABLE_ASSERT_CHECKING
576 #define gcc_assert(EXPR) \
577 ((void)(!(EXPR) ? fancy_abort (__FILE__, __LINE__, __FUNCTION__), 0 : 0))
578 #else
579 /* Include EXPR, so that unused variable warnings do not occur. */
580 #define gcc_assert(EXPR) ((void)(0 && (EXPR)))
581 #endif
583 /* Use gcc_unreachable() to mark unreachable locations (like an
584 unreachable default case of a switch. Do not use gcc_assert(0). */
585 #define gcc_unreachable() (fancy_abort (__FILE__, __LINE__, __FUNCTION__))
587 /* Provide a fake boolean type. We make no attempt to use the
588 C99 _Bool, as it may not be available in the bootstrap compiler,
589 and even if it is, it is liable to be buggy.
590 This must be after all inclusion of system headers, as some of
591 them will mess us up. */
593 #undef TRUE
594 #undef FALSE
596 #ifdef __cplusplus
597 /* Obsolete. */
598 # define TRUE true
599 # define FALSE false
600 #else /* !__cplusplus */
601 # undef bool
602 # undef true
603 # undef false
605 # define bool unsigned char
606 # define true 1
607 # define false 0
609 /* Obsolete. */
610 # define TRUE true
611 # define FALSE false
612 #endif /* !__cplusplus */
614 /* Some compilers do not allow the use of unsigned char in bitfields. */
615 #define BOOL_BITFIELD unsigned int
617 /* As the last action in this file, we poison the identifiers that
618 shouldn't be used. Note, luckily gcc-3.0's token-based integrated
619 preprocessor won't trip on poisoned identifiers that arrive from
620 the expansion of macros. E.g. #define strrchr rindex, won't error
621 if rindex is poisoned after this directive is issued and later on
622 strrchr is called.
624 Note: We define bypass macros for the few cases where we really
625 want to use the libc memory allocation routines. Otherwise we
626 insist you use the "x" versions from libiberty. */
628 #define really_call_malloc malloc
629 #define really_call_calloc calloc
630 #define really_call_realloc realloc
632 #if defined(FLEX_SCANNER) || defined(YYBISON) || defined(YYBYACC)
633 /* Flex and bison use malloc and realloc. Yuk. Note that this means
634 really_call_* cannot be used in a .l or .y file. */
635 #define malloc xmalloc
636 #define realloc xrealloc
637 #endif
639 #if (GCC_VERSION >= 3000)
641 /* Note autoconf checks for prototype declarations and includes
642 system.h while doing so. Only poison these tokens if actually
643 compiling gcc, so that the autoconf declaration tests for malloc
644 etc don't spuriously fail. */
645 #ifdef IN_GCC
646 #undef calloc
647 #undef strdup
648 #pragma GCC poison calloc strdup
650 #if !defined(FLEX_SCANNER) && !defined(YYBISON)
651 #undef malloc
652 #undef realloc
653 #pragma GCC poison malloc realloc
654 #endif
656 /* Old target macros that have moved to the target hooks structure. */
657 #pragma GCC poison ASM_OPEN_PAREN ASM_CLOSE_PAREN \
658 FUNCTION_PROLOGUE FUNCTION_EPILOGUE \
659 FUNCTION_END_PROLOGUE FUNCTION_BEGIN_EPILOGUE \
660 DECL_MACHINE_ATTRIBUTES COMP_TYPE_ATTRIBUTES INSERT_ATTRIBUTES \
661 VALID_MACHINE_DECL_ATTRIBUTE VALID_MACHINE_TYPE_ATTRIBUTE \
662 SET_DEFAULT_TYPE_ATTRIBUTES SET_DEFAULT_DECL_ATTRIBUTES \
663 MERGE_MACHINE_TYPE_ATTRIBUTES MERGE_MACHINE_DECL_ATTRIBUTES \
664 MD_INIT_BUILTINS MD_EXPAND_BUILTIN ASM_OUTPUT_CONSTRUCTOR \
665 ASM_OUTPUT_DESTRUCTOR SIGNED_CHAR_SPEC MAX_CHAR_TYPE_SIZE \
666 WCHAR_UNSIGNED UNIQUE_SECTION SELECT_SECTION SELECT_RTX_SECTION \
667 ENCODE_SECTION_INFO STRIP_NAME_ENCODING ASM_GLOBALIZE_LABEL \
668 ASM_OUTPUT_MI_THUNK CONST_COSTS RTX_COSTS DEFAULT_RTX_COSTS \
669 ADDRESS_COST MACHINE_DEPENDENT_REORG ASM_FILE_START ASM_FILE_END \
670 ASM_SIMPLIFY_DWARF_ADDR INIT_TARGET_OPTABS INIT_SUBTARGET_OPTABS \
671 INIT_GOFAST_OPTABS MULSI3_LIBCALL MULDI3_LIBCALL DIVSI3_LIBCALL \
672 DIVDI3_LIBCALL UDIVSI3_LIBCALL UDIVDI3_LIBCALL MODSI3_LIBCALL \
673 MODDI3_LIBCALL UMODSI3_LIBCALL UMODDI3_LIBCALL BUILD_VA_LIST_TYPE \
674 PRETEND_OUTGOING_VARARGS_NAMED STRUCT_VALUE_INCOMING_REGNUM \
675 ASM_OUTPUT_SECTION_NAME PROMOTE_FUNCTION_ARGS \
676 STRUCT_VALUE_INCOMING STRICT_ARGUMENT_NAMING \
677 PROMOTE_FUNCTION_RETURN PROMOTE_PROTOTYPES STRUCT_VALUE_REGNUM \
678 SETUP_INCOMING_VARARGS EXPAND_BUILTIN_SAVEREGS \
679 DEFAULT_SHORT_ENUMS SPLIT_COMPLEX_ARGS MD_ASM_CLOBBERS \
680 HANDLE_PRAGMA_REDEFINE_EXTNAME HANDLE_PRAGMA_EXTERN_PREFIX \
681 MUST_PASS_IN_STACK FUNCTION_ARG_PASS_BY_REFERENCE \
682 VECTOR_MODE_SUPPORTED_P TARGET_SUPPORTS_HIDDEN \
683 FUNCTION_ARG_PARTIAL_NREGS ASM_OUTPUT_DWARF_DTPREL \
684 ALLOCATE_INITIAL_VALUE
686 /* Other obsolete target macros, or macros that used to be in target
687 headers and were not used, and may be obsolete or may never have
688 been used. */
689 #pragma GCC poison INT_ASM_OP ASM_OUTPUT_EH_REGION_BEG CPP_PREDEFINES \
690 ASM_OUTPUT_EH_REGION_END ASM_OUTPUT_LABELREF_AS_INT SMALL_STACK \
691 DOESNT_NEED_UNWINDER EH_TABLE_LOOKUP OBJC_SELECTORS_WITHOUT_LABELS \
692 OMIT_EH_TABLE EASY_DIV_EXPR IMPLICIT_FIX_EXPR \
693 LONGJMP_RESTORE_FROM_STACK MAX_INT_TYPE_SIZE ASM_IDENTIFY_GCC \
694 STDC_VALUE TRAMPOLINE_ALIGN ASM_IDENTIFY_GCC_AFTER_SOURCE \
695 SLOW_ZERO_EXTEND SUBREG_REGNO_OFFSET DWARF_LINE_MIN_INSTR_LENGTH \
696 TRADITIONAL_RETURN_FLOAT NO_BUILTIN_SIZE_TYPE \
697 NO_BUILTIN_PTRDIFF_TYPE NO_BUILTIN_WCHAR_TYPE NO_BUILTIN_WINT_TYPE \
698 BLOCK_PROFILER BLOCK_PROFILER_CODE FUNCTION_BLOCK_PROFILER \
699 FUNCTION_BLOCK_PROFILER_EXIT MACHINE_STATE_SAVE \
700 MACHINE_STATE_RESTORE SCCS_DIRECTIVE SECTION_ASM_OP BYTEORDER \
701 ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL HOST_WORDS_BIG_ENDIAN \
702 OBJC_PROLOGUE ALLOCATE_TRAMPOLINE HANDLE_PRAGMA ROUND_TYPE_SIZE \
703 ROUND_TYPE_SIZE_UNIT CONST_SECTION_ASM_OP CRT_GET_RFIB_TEXT \
704 DBX_LBRAC_FIRST DBX_OUTPUT_ENUM DBX_OUTPUT_SOURCE_FILENAME \
705 DBX_WORKING_DIRECTORY INSN_CACHE_DEPTH INSN_CACHE_SIZE \
706 INSN_CACHE_LINE_WIDTH INIT_SECTION_PREAMBLE NEED_ATEXIT ON_EXIT \
707 EXIT_BODY OBJECT_FORMAT_ROSE MULTIBYTE_CHARS MAP_CHARACTER \
708 LIBGCC_NEEDS_DOUBLE FINAL_PRESCAN_LABEL DEFAULT_CALLER_SAVES \
709 LOAD_ARGS_REVERSED MAX_INTEGER_COMPUTATION_MODE \
710 CONVERT_HARD_REGISTER_TO_SSA_P ASM_OUTPUT_MAIN_SOURCE_FILENAME \
711 FIRST_INSN_ADDRESS TEXT_SECTION SHARED_BSS_SECTION_ASM_OP \
712 PROMOTED_MODE EXPAND_BUILTIN_VA_END \
713 LINKER_DOES_NOT_WORK_WITH_DWARF2 FUNCTION_ARG_KEEP_AS_REFERENCE \
714 GIV_SORT_CRITERION MAX_LONG_TYPE_SIZE MAX_LONG_DOUBLE_TYPE_SIZE \
715 MAX_WCHAR_TYPE_SIZE SHARED_SECTION_ASM_OP INTEGRATE_THRESHOLD \
716 FINAL_REG_PARM_STACK_SPACE MAYBE_REG_PARM_STACK_SPACE \
717 TRADITIONAL_PIPELINE_INTERFACE DFA_PIPELINE_INTERFACE \
718 DBX_OUTPUT_STANDARD_TYPES BUILTIN_SETJMP_FRAME_VALUE \
719 SUNOS4_SHARED_LIBRARIES PROMOTE_FOR_CALL_ONLY \
720 SPACE_AFTER_L_OPTION NO_RECURSIVE_FUNCTION_CSE \
721 DEFAULT_MAIN_RETURN TARGET_MEM_FUNCTIONS EXPAND_BUILTIN_VA_ARG \
722 COLLECT_PARSE_FLAG DWARF2_GENERATE_TEXT_SECTION_LABEL WINNING_GDB \
723 ASM_OUTPUT_FILENAME ASM_OUTPUT_SOURCE_LINE FILE_NAME_JOINER \
724 GDB_INV_REF_REGPARM_STABS_LETTER DBX_MEMPARM_STABS_LETTER \
725 PUT_SDB_SRC_FILE STABS_GCC_MARKER DBX_OUTPUT_FUNCTION_END \
726 DBX_OUTPUT_GCC_MARKER DBX_FINISH_SYMBOL SDB_GENERATE_FAKE \
727 NON_SAVING_SETJMP TARGET_LATE_RTL_PROLOGUE_EPILOGUE \
728 CASE_DROPS_THROUGH TARGET_BELL TARGET_BS TARGET_CR TARGET_DIGIT0 \
729 TARGET_ESC TARGET_FF TARGET_NEWLINE TARGET_TAB TARGET_VT \
730 LINK_LIBGCC_SPECIAL DONT_ACCESS_GBLS_AFTER_EPILOGUE \
731 TARGET_OPTIONS TARGET_SWITCHES EXTRA_CC_MODES FINALIZE_PIC \
732 PREDICATE_CODES SPECIAL_MODE_PREDICATES HOST_PTR_PRINTF \
733 EXTRA_SECTIONS EXTRA_SECTION_FUNCTIONS READONLY_DATA_SECTION \
734 TARGET_ASM_EXCEPTION_SECTION TARGET_ASM_EH_FRAME_SECTION \
735 SMALL_ARG_MAX ASM_OUTPUT_SHARED_BSS ASM_OUTPUT_SHARED_COMMON \
736 ASM_OUTPUT_SHARED_LOCAL UNALIGNED_WORD_ASM_OP \
737 ASM_MAKE_LABEL_LINKONCE
739 /* Hooks that are no longer used. */
740 #pragma GCC poison LANG_HOOKS_FUNCTION_MARK LANG_HOOKS_FUNCTION_FREE \
741 LANG_HOOKS_MARK_TREE LANG_HOOKS_INSERT_DEFAULT_ATTRIBUTES \
742 LANG_HOOKS_TREE_INLINING_ESTIMATE_NUM_INSNS \
743 LANG_HOOKS_PUSHLEVEL LANG_HOOKS_SET_BLOCK \
744 LANG_HOOKS_MAYBE_BUILD_CLEANUP LANG_HOOKS_UPDATE_DECL_AFTER_SAVING \
745 LANG_HOOKS_POPLEVEL LANG_HOOKS_TRUTHVALUE_CONVERSION
747 /* Libiberty macros that are no longer used in GCC. */
748 #undef ANSI_PROTOTYPES
749 #undef PTR_CONST
750 #undef LONG_DOUBLE
751 #undef VPARAMS
752 #undef VA_OPEN
753 #undef VA_FIXEDARG
754 #undef VA_CLOSE
755 #undef VA_START
756 #pragma GCC poison ANSI_PROTOTYPES PTR_CONST LONG_DOUBLE VPARAMS VA_OPEN \
757 VA_FIXEDARG VA_CLOSE VA_START
758 #endif /* IN_GCC */
760 /* Note: not all uses of the `index' token (e.g. variable names and
761 structure members) have been eliminated. */
762 #undef bcopy
763 #undef bzero
764 #undef bcmp
765 #undef rindex
766 #pragma GCC poison bcopy bzero bcmp rindex
768 #endif /* GCC >= 3.0 */
770 /* This macro allows casting away const-ness to pass -Wcast-qual
771 warnings. DO NOT USE THIS UNLESS YOU REALLY HAVE TO! It should
772 only be used in certain specific cases. One valid case is where
773 the C standard definitions or prototypes force you to. E.g. if you
774 need to free a const object, or if you pass a const string to
775 execv, et al. Another valid use would be in an allocation function
776 that creates const objects that need to be initialized. In some
777 cases we have non-const functions that return the argument
778 (e.g. next_nonnote_insn). Rather than create const shadow
779 functions, we can cast away const-ness in calling these interfaces
780 if we're careful to verify that the called function does indeed not
781 modify its argument and the return value is only used in a const
782 context. (This can be somewhat dangerous as these assumptions can
783 change after the fact). Beyond these uses, most other cases of
784 using this macro should be viewed with extreme caution. */
786 #if defined(__GNUC__) && GCC_VERSION != 4000
787 /* GCC 4.0.x has a bug where it may ICE on this expression. */
788 #define CONST_CAST2(TOTYPE,FROMTYPE,X) ((__extension__(union {FROMTYPE _q; TOTYPE _nq;})(X))._nq)
789 #else
790 #define CONST_CAST2(TOTYPE,FROMTYPE,X) ((TOTYPE)(FROMTYPE)(X))
791 #endif
792 #define CONST_CAST(TYPE,X) CONST_CAST2(TYPE, const TYPE, (X))
793 #define CONST_CAST_TREE(X) CONST_CAST(union tree_node *, (X))
794 #define CONST_CAST_RTX(X) CONST_CAST(struct rtx_def *, (X))
795 #define CONST_CAST_BB(X) CONST_CAST(struct basic_block_def *, (X))
797 /* Activate -Wcast-qual as a warning (not an error/-Werror). */
798 #if GCC_VERSION >= 4003
799 #pragma GCC diagnostic warning "-Wcast-qual"
800 /* If asserts are disabled, activate -Wuninitialized as a warning (not
801 an error/-Werror). */
802 #ifndef ASSERT_CHECKING
803 #pragma GCC diagnostic warning "-Wuninitialized"
804 #endif
805 #endif
807 #endif /* ! GCC_SYSTEM_H */