gcc/system.h

   1 /* Get common system includes and various definitions and declarations based
   2    on autoconf macros.
   3    Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
   4
   5 This file is part of GCC.
   6
   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.
  11
  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.
  16
  17 You should have received a copy of the GNU General Public License
  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.  */
  21
  22
  23 #ifndef GCC_SYSTEM_H
  24 #define GCC_SYSTEM_H
  25
  26 /* This is the location of the online document giving information how
  27    to report bugs. If you change this string, also check for strings
  28    not under control of the preprocessor.  */
  29 #define GCCBUGURL "<URL:http://www.gnu.org/software/gcc/bugs.html>"
  30
  31 /* We must include stdarg.h/varargs.h before stdio.h.  */
  32 #ifdef ANSI_PROTOTYPES
  33 #include <stdarg.h>
  34 #else
  35 #include <varargs.h>
  36 #endif
  37
  38 #ifndef va_copy
  39 # ifdef __va_copy
  40 #   define va_copy(d,s)  __va_copy((d),(s))
  41 # else
  42 #   define va_copy(d,s)  ((d) = (s))
  43 # endif
  44 #endif
  45
  46 #ifdef HAVE_STDDEF_H
  47 # include <stddef.h>
  48 #endif
  49
  50 #include <stdio.h>
  51
  52 /* Define a generic NULL if one hasn't already been defined.  */
  53 #ifndef NULL
  54 #define NULL 0
  55 #endif
  56
  57 /* The compiler is not a multi-threaded application and therefore we
  58    do not have to use the locking functions.  In fact, using the locking
  59    functions can cause the compiler to be significantly slower under
  60    I/O bound conditions (such as -g -O0 on very large source files).
  61
  62    HAVE_DECL_PUTC_UNLOCKED actually indicates whether or not the stdio
  63    code is multi-thread safe by default.  If it is set to 0, then do
  64    not worry about using the _unlocked functions.
  65
  66    fputs_unlocked, fwrite_unlocked, and fprintf_unlocked are
  67    extensions and need to be prototyped by hand (since we do not
  68    define _GNU_SOURCE).  */
  69
  70 #if defined HAVE_DECL_PUTC_UNLOCKED && HAVE_DECL_PUTC_UNLOCKED
  71
  72 # ifdef HAVE_PUTC_UNLOCKED
  73 #  undef putc
  74 #  define putc(C, Stream) putc_unlocked (C, Stream)
  75 # endif
  76 # ifdef HAVE_FPUTC_UNLOCKED
  77 #  undef fputc
  78 #  define fputc(C, Stream) fputc_unlocked (C, Stream)
  79 # endif
  80
  81 # ifdef HAVE_FPUTS_UNLOCKED
  82 #  undef fputs
  83 #  define fputs(String, Stream) fputs_unlocked (String, Stream)
  84 #  if defined (HAVE_DECL_FPUTS_UNLOCKED) && !HAVE_DECL_FPUTS_UNLOCKED
  85 extern int fputs_unlocked PARAMS ((const char *, FILE *));
  86 #  endif
  87 # endif
  88 # ifdef HAVE_FWRITE_UNLOCKED
  89 #  undef fwrite
  90 #  define fwrite(Ptr, Size, N, Stream) fwrite_unlocked (Ptr, Size, N, Stream)
  91 #  if defined (HAVE_DECL_FWRITE_UNLOCKED) && !HAVE_DECL_FWRITE_UNLOCKED
  92 extern int fwrite_unlocked PARAMS ((const PTR, size_t, size_t, FILE *));
  93 #  endif
  94 # endif
  95 # ifdef HAVE_FPRINTF_UNLOCKED
  96 #  undef fprintf
  97 /* We can't use a function-like macro here because we don't know if
  98    we have varargs macros.  */
  99 #  define fprintf fprintf_unlocked
 100 #  if defined (HAVE_DECL_FPRINTF_UNLOCKED) && !HAVE_DECL_FPRINTF_UNLOCKED
 101 extern int fprintf_unlocked PARAMS ((FILE *, const char *, ...));
 102 #  endif
 103 # endif
 104
 105 #endif
 106
 107 /* There are an extraordinary number of issues with <ctype.h>.
 108    The last straw is that it varies with the locale.  Use libiberty's
 109    replacement instead.  */
 110 #include <safe-ctype.h>
 111
 112 #include <sys/types.h>
 113
 114 #include <errno.h>
 115
 116 #if !defined (errno) && defined (HAVE_DECL_ERRNO) && !HAVE_DECL_ERRNO
 117 extern int errno;
 118 #endif
 119
 120 #ifdef STRING_WITH_STRINGS
 121 # include <string.h>
 122 # include <strings.h>
 123 #else
 124 # ifdef HAVE_STRING_H
 125 #  include <string.h>
 126 # else
 127 #  ifdef HAVE_STRINGS_H
 128 #   include <strings.h>
 129 #  endif
 130 # endif
 131 #endif
 132
 133 #ifdef HAVE_STDLIB_H
 134 # include <stdlib.h>
 135 #endif
 136
 137 /* If we don't have an overriding definition, set SUCCESS_EXIT_CODE and
 138    FATAL_EXIT_CODE to EXIT_SUCCESS and EXIT_FAILURE respectively,
 139    or 0 and 1 if those macros are not defined.  */
 140 #ifndef SUCCESS_EXIT_CODE
 141 # ifdef EXIT_SUCCESS
 142 #  define SUCCESS_EXIT_CODE EXIT_SUCCESS
 143 # else
 144 #  define SUCCESS_EXIT_CODE 0
 145 # endif
 146 #endif
 147
 148 #ifndef FATAL_EXIT_CODE
 149 # ifdef EXIT_FAILURE
 150 #  define FATAL_EXIT_CODE EXIT_FAILURE
 151 # else
 152 #  define FATAL_EXIT_CODE 1
 153 # endif
 154 #endif
 155
 156 #ifdef HAVE_UNISTD_H
 157 # include <unistd.h>
 158 #endif
 159
 160 #ifdef HAVE_SYS_PARAM_H
 161 # include <sys/param.h>
 162 /* We use this identifier later and it appears in some vendor param.h's.  */
 163 # undef PREFETCH
 164 #endif
 165
 166 #if HAVE_LIMITS_H
 167 # include <limits.h>
 168 #endif
 169
 170 /* Get definitions of HOST_WIDE_INT and HOST_WIDEST_INT.  */
 171 #include "hwint.h"
 172
 173 /* A macro to determine whether a VALUE lies inclusively within a
 174    certain range without evaluating the VALUE more than once.  This
 175    macro won't warn if the VALUE is unsigned and the LOWER bound is
 176    zero, as it would e.g. with "VALUE >= 0 && ...".  Note the LOWER
 177    bound *is* evaluated twice, and LOWER must not be greater than
 178    UPPER.  However the bounds themselves can be either positive or
 179    negative.  */
 180 #define IN_RANGE(VALUE, LOWER, UPPER) \
 181   ((unsigned HOST_WIDE_INT) ((VALUE) - (LOWER)) <= ((UPPER) - (LOWER)))
 182
 183 /* Infrastructure for defining missing _MAX and _MIN macros.  Note that
 184    macros defined with these cannot be used in #if.  */
 185
 186 /* The extra casts work around common compiler bugs.  */
 187 #define INTTYPE_SIGNED(t) (! ((t) 0 < (t) -1))
 188 /* The outer cast is needed to work around a bug in Cray C 5.0.3.0.
 189    It is necessary at least when t == time_t.  */
 190 #define INTTYPE_MINIMUM(t) ((t) (INTTYPE_SIGNED (t) \
 191                              ? ~ (t) 0 << (sizeof(t) * CHAR_BIT - 1) : (t) 0))
 192 #define INTTYPE_MAXIMUM(t) ((t) (~ (t) 0 - INTTYPE_MINIMUM (t)))
 193
 194 /* Use that infrastructure to provide a few constants.  */
 195 #ifndef UCHAR_MAX
 196 # define UCHAR_MAX INTTYPE_MAXIMUM (unsigned char)
 197 #endif
 198
 199 #ifdef TIME_WITH_SYS_TIME
 200 # include <sys/time.h>
 201 # include <time.h>
 202 #else
 203 # if HAVE_SYS_TIME_H
 204 #  include <sys/time.h>
 205 # else
 206 #  ifdef HAVE_TIME_H
 207 #   include <time.h>
 208 #  endif
 209 # endif
 210 #endif
 211
 212 #ifdef HAVE_FCNTL_H
 213 # include <fcntl.h>
 214 #else
 215 # ifdef HAVE_SYS_FILE_H
 216 #  include <sys/file.h>
 217 # endif
 218 #endif
 219
 220 #ifndef SEEK_SET
 221 # define SEEK_SET 0
 222 # define SEEK_CUR 1
 223 # define SEEK_END 2
 224 #endif
 225 #ifndef F_OK
 226 # define F_OK 0
 227 # define X_OK 1
 228 # define W_OK 2
 229 # define R_OK 4
 230 #endif
 231 #ifndef O_RDONLY
 232 # define O_RDONLY 0
 233 #endif
 234 #ifndef O_WRONLY
 235 # define O_WRONLY 1
 236 #endif
 237
 238 /* Some systems define these in, e.g., param.h.  We undefine these names
 239    here to avoid the warnings.  We prefer to use our definitions since we
 240    know they are correct.  */
 241
 242 #undef MIN
 243 #undef MAX
 244 #define MIN(X,Y) ((X) < (Y) ? (X) : (Y))
 245 #define MAX(X,Y) ((X) > (Y) ? (X) : (Y))
 246
 247 /* Returns the least number N such that N * Y >= X.  */
 248 #define CEIL(x,y) (((x) + (y) - 1) / (y))
 249
 250 #ifdef HAVE_SYS_WAIT_H
 251 #include <sys/wait.h>
 252 #endif
 253
 254 #ifndef WIFSIGNALED
 255 #define WIFSIGNALED(S) (((S) & 0xff) != 0 && ((S) & 0xff) != 0x7f)
 256 #endif
 257 #ifndef WTERMSIG
 258 #define WTERMSIG(S) ((S) & 0x7f)
 259 #endif
 260 #ifndef WIFEXITED
 261 #define WIFEXITED(S) (((S) & 0xff) == 0)
 262 #endif
 263 #ifndef WEXITSTATUS
 264 #define WEXITSTATUS(S) (((S) & 0xff00) >> 8)
 265 #endif
 266 #ifndef WSTOPSIG
 267 #define WSTOPSIG WEXITSTATUS
 268 #endif
 269
 270 /* The HAVE_DECL_* macros are three-state, undefined, 0 or 1.  If they
 271    are defined to 0 then we must provide the relevant declaration
 272    here.  These checks will be in the undefined state while configure
 273    is running so be careful to test "defined (HAVE_DECL_*)".  */
 274
 275 #if defined (HAVE_DECL_ATOF) && !HAVE_DECL_ATOF
 276 extern double atof PARAMS ((const char *));
 277 #endif
 278
 279 #if defined (HAVE_DECL_ATOL) && !HAVE_DECL_ATOL
 280 extern long atol PARAMS ((const char *));
 281 #endif
 282
 283 #if defined (HAVE_DECL_FREE) && !HAVE_DECL_FREE
 284 extern void free PARAMS ((PTR));
 285 #endif
 286
 287 #if defined (HAVE_DECL_GETCWD) && !HAVE_DECL_GETCWD
 288 extern char *getcwd PARAMS ((char *, size_t));
 289 #endif
 290
 291 #if defined (HAVE_DECL_GETENV) && !HAVE_DECL_GETENV
 292 extern char *getenv PARAMS ((const char *));
 293 #endif
 294
 295 #if defined (HAVE_DECL_GETOPT) && !HAVE_DECL_GETOPT
 296 extern int getopt PARAMS ((int, char * const *, const char *));
 297 #endif
 298
 299 #if defined (HAVE_DECL_GETWD) && !HAVE_DECL_GETWD
 300 extern char *getwd PARAMS ((char *));
 301 #endif
 302
 303 #if defined (HAVE_DECL_SBRK) && !HAVE_DECL_SBRK
 304 extern PTR sbrk PARAMS ((int));
 305 #endif
 306
 307 #if defined (HAVE_DECL_STRSTR) && !HAVE_DECL_STRSTR
 308 extern char *strstr PARAMS ((const char *, const char *));
 309 #endif
 310
 311 #ifdef HAVE_MALLOC_H
 312 #include <malloc.h>
 313 #endif
 314
 315 #if defined (HAVE_DECL_MALLOC) && !HAVE_DECL_MALLOC
 316 extern PTR malloc PARAMS ((size_t));
 317 #endif
 318
 319 #if defined (HAVE_DECL_CALLOC) && !HAVE_DECL_CALLOC
 320 extern PTR calloc PARAMS ((size_t, size_t));
 321 #endif
 322
 323 #if defined (HAVE_DECL_REALLOC) && !HAVE_DECL_REALLOC
 324 extern PTR realloc PARAMS ((PTR, size_t));
 325 #endif
 326
 327 /* If the system doesn't provide strsignal, we get it defined in
 328    libiberty but no declaration is supplied.  */
 329 #ifndef HAVE_STRSIGNAL
 330 # ifndef strsignal
 331 extern const char *strsignal PARAMS ((int));
 332 # endif
 333 #endif
 334
 335 #ifdef HAVE_GETRLIMIT
 336 # if defined (HAVE_DECL_GETRLIMIT) && !HAVE_DECL_GETRLIMIT
 337 #  ifndef getrlimit
 338 #   ifdef ANSI_PROTOTYPES
 339 struct rlimit;
 340 #   endif
 341 extern int getrlimit PARAMS ((int, struct rlimit *));
 342 #  endif
 343 # endif
 344 #endif
 345
 346 #ifdef HAVE_SETRLIMIT
 347 # if defined (HAVE_DECL_SETRLIMIT) && !HAVE_DECL_SETRLIMIT
 348 #  ifndef setrlimit
 349 #   ifdef ANSI_PROTOTYPES
 350 struct rlimit;
 351 #   endif
 352 extern int setrlimit PARAMS ((int, const struct rlimit *));
 353 #  endif
 354 # endif
 355 #endif
 356
 357 /* HAVE_VOLATILE only refers to the stage1 compiler.  We also check
 358    __STDC__ and assume gcc sets it and has volatile in stage >=2.  */
 359 #if !defined(HAVE_VOLATILE) && !defined(__STDC__) && !defined(volatile)
 360 #define volatile
 361 #endif
 362
 363 #if defined (HAVE_DECL_ABORT) && !HAVE_DECL_ABORT
 364 extern void abort PARAMS ((void));
 365 #endif
 366
 367 /* 1 if we have C99 designated initializers.  */
 368 #if !defined(HAVE_DESIGNATED_INITIALIZERS)
 369 #define HAVE_DESIGNATED_INITIALIZERS \
 370   ((GCC_VERSION >= 2007) || (__STDC_VERSION__ >= 199901L))
 371 #endif
 372
 373 /* 1 if we have _Bool.  */
 374 #ifndef HAVE__BOOL
 375 # define HAVE__BOOL \
 376    ((GCC_VERSION >= 3000) || (__STDC_VERSION__ >= 199901L))
 377 #endif
 378
 379
 380 #if HAVE_SYS_STAT_H
 381 # include <sys/stat.h>
 382 #endif
 383
 384 /* Test if something is a normal file.  */
 385 #ifndef S_ISREG
 386 #define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
 387 #endif
 388
 389 /* Test if something is a directory.  */
 390 #ifndef S_ISDIR
 391 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
 392 #endif
 393
 394 /* Test if something is a character special file.  */
 395 #ifndef S_ISCHR
 396 #define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR)
 397 #endif
 398
 399 /* Test if something is a block special file.  */
 400 #ifndef S_ISBLK
 401 #define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK)
 402 #endif
 403
 404 /* Test if something is a socket.  */
 405 #ifndef S_ISSOCK
 406 # ifdef S_IFSOCK
 407 #   define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK)
 408 # else
 409 #   define S_ISSOCK(m) 0
 410 # endif
 411 #endif
 412
 413 /* Test if something is a FIFO.  */
 414 #ifndef S_ISFIFO
 415 # ifdef S_IFIFO
 416 #  define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO)
 417 # else
 418 #  define S_ISFIFO(m) 0
 419 # endif
 420 #endif
 421
 422 /* Approximate O_NONBLOCK.  */
 423 #ifndef O_NONBLOCK
 424 #define O_NONBLOCK O_NDELAY
 425 #endif
 426
 427 /* Approximate O_NOCTTY.  */
 428 #ifndef O_NOCTTY
 429 #define O_NOCTTY 0
 430 #endif
 431
 432 /* Define well known filenos if the system does not define them.  */
 433 #ifndef STDIN_FILENO
 434 # define STDIN_FILENO   0
 435 #endif
 436 #ifndef STDOUT_FILENO
 437 # define STDOUT_FILENO  1
 438 #endif
 439 #ifndef STDERR_FILENO
 440 # define STDERR_FILENO  2
 441 #endif
 442
 443 /* Some systems have mkdir that takes a single argument.  */
 444 #ifdef MKDIR_TAKES_ONE_ARG
 445 # define mkdir(a,b) mkdir(a)
 446 #endif
 447
 448 /* Provide a way to print an address via printf.  */
 449 #ifndef HOST_PTR_PRINTF
 450 # ifdef HAVE_PRINTF_PTR
 451 #  define HOST_PTR_PRINTF "%p"
 452 # else
 453 #  define HOST_PTR_PRINTF \
 454     (sizeof (int) == sizeof (char *) ? "%x" \
 455      : sizeof (long) == sizeof (char *) ? "%lx" : "%llx")
 456 # endif
 457 #endif /* ! HOST_PTR_PRINTF */
 458
 459 /* By default, colon separates directories in a path.  */
 460 #ifndef PATH_SEPARATOR
 461 #define PATH_SEPARATOR ':'
 462 #endif
 463
 464 #ifndef DIR_SEPARATOR
 465 #define DIR_SEPARATOR '/'
 466 #endif
 467
 468 /* Define IS_DIR_SEPARATOR.  */
 469 #ifndef DIR_SEPARATOR_2
 470 # define IS_DIR_SEPARATOR(CH) ((CH) == DIR_SEPARATOR)
 471 #else /* DIR_SEPARATOR_2 */
 472 # define IS_DIR_SEPARATOR(CH) \
 473         (((CH) == DIR_SEPARATOR) || ((CH) == DIR_SEPARATOR_2))
 474 #endif /* DIR_SEPARATOR_2 */
 475
 476 /* Say how to test for an absolute pathname.  On Unix systems, this is if
 477    it starts with a leading slash or a '$', the latter meaning the value of
 478    an environment variable is to be used.  On machien with DOS-based
 479    file systems, it is also absolute if it starts with a drive identifier.  */
 480 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
 481 #define IS_ABSOLUTE_PATHNAME(STR) \
 482   (IS_DIR_SEPARATOR ((STR)[0]) || (STR)[0] == '$' \
 483    || ((STR)[0] != '\0' && (STR)[1] == ':' && IS_DIR_SEPARATOR ((STR)[2])))
 484 #else
 485 #define IS_ABSOLUTE_PATHNAME(STR) \
 486   (IS_DIR_SEPARATOR ((STR)[0]) || (STR)[0] == '$')
 487 #endif
 488
 489 /* Get libiberty declarations.  */
 490 #include "libiberty.h"
 491 #include "symcat.h"
 492
 493 /* Provide a default for the HOST_BIT_BUCKET.
 494    This suffices for POSIX-like hosts.  */
 495
 496 #ifndef HOST_BIT_BUCKET
 497 #define HOST_BIT_BUCKET "/dev/null"
 498 #endif
 499
 500 /* Be conservative and only use enum bitfields with GCC.
 501    FIXME: provide a complete autoconf test for buggy enum bitfields.  */
 502
 503 #if (GCC_VERSION > 2000)
 504 #define ENUM_BITFIELD(TYPE) enum TYPE
 505 #else
 506 #define ENUM_BITFIELD(TYPE) unsigned int
 507 #endif
 508
 509 #ifndef offsetof
 510 #define offsetof(TYPE, MEMBER)  ((size_t) &((TYPE *) 0)->MEMBER)
 511 #endif
 512
 513 /* Traditional C cannot initialize union members of structs.  Provide
 514    a macro which expands appropriately to handle it.  This only works
 515    if you intend to initialize the union member to zero since it relies
 516    on default initialization to zero in the traditional C case.  */
 517 #ifdef __STDC__
 518 #define UNION_INIT_ZERO , {0}
 519 #else
 520 #define UNION_INIT_ZERO
 521 #endif
 522
 523 /* Various error reporting routines want to use __FUNCTION__.  */
 524 #if (GCC_VERSION < 2007)
 525 #ifndef __FUNCTION__
 526 #define __FUNCTION__ "?"
 527 #endif /* ! __FUNCTION__ */
 528 #endif
 529
 530 /* __builtin_expect(A, B) evaluates to A, but notifies the compiler that
 531    the most likely value of A is B.  This feature was added at some point
 532    between 2.95 and 3.0.  Let's use 3.0 as the lower bound for now.  */
 533 #if (GCC_VERSION < 3000)
 534 #define __builtin_expect(a, b) (a)
 535 #endif
 536
 537 /* Provide some sort of boolean type.  We use stdbool.h if it's
 538   available.  This must be after all inclusion of system headers,
 539   as some of them will mess us up.  */
 540 #undef bool
 541 #undef true
 542 #undef false
 543 #undef TRUE
 544 #undef FALSE
 545
 546 #ifdef HAVE_STDBOOL_H
 547 # include <stdbool.h>
 548 #else
 549 # if !HAVE__BOOL
 550 typedef char _Bool;
 551 # endif
 552 # define bool _Bool
 553 # define true 1
 554 # define false 0
 555 #endif
 556
 557 #define TRUE true
 558 #define FALSE false
 559
 560 /* As the last action in this file, we poison the identifiers that
 561    shouldn't be used.  Note, luckily gcc-3.0's token-based integrated
 562    preprocessor won't trip on poisoned identifiers that arrive from
 563    the expansion of macros.  E.g. #define strrchr rindex, won't error
 564    if rindex is poisoned after this directive is issued and later on
 565    strrchr is called.
 566
 567    Note: We define bypass macros for the few cases where we really
 568    want to use the libc memory allocation routines.  Otherwise we
 569    insist you use the "x" versions from libiberty.  */
 570
 571 #define really_call_malloc malloc
 572 #define really_call_calloc calloc
 573 #define really_call_realloc realloc
 574
 575 #if (GCC_VERSION >= 3000)
 576
 577 /* Note autoconf checks for prototype declarations and includes
 578    system.h while doing so.  Only poison these tokens if actually
 579    compiling gcc, so that the autoconf declaration tests for malloc
 580    etc don't spuriously fail.  */
 581 #ifdef IN_GCC
 582 #undef malloc
 583 #undef realloc
 584 #undef calloc
 585 #undef strdup
 586  #pragma GCC poison malloc realloc calloc strdup
 587
 588 /* Old target macros that have moved to the target hooks structure.  */
 589  #pragma GCC poison ASM_OPEN_PAREN ASM_CLOSE_PAREN                      \
 590         FUNCTION_PROLOGUE FUNCTION_EPILOGUE                             \
 591         FUNCTION_END_PROLOGUE FUNCTION_BEGIN_EPILOGUE                   \
 592         DECL_MACHINE_ATTRIBUTES COMP_TYPE_ATTRIBUTES INSERT_ATTRIBUTES  \
 593         VALID_MACHINE_DECL_ATTRIBUTE VALID_MACHINE_TYPE_ATTRIBUTE       \
 594         SET_DEFAULT_TYPE_ATTRIBUTES SET_DEFAULT_DECL_ATTRIBUTES         \
 595         MERGE_MACHINE_TYPE_ATTRIBUTES MERGE_MACHINE_DECL_ATTRIBUTES     \
 596         MD_INIT_BUILTINS MD_EXPAND_BUILTIN ASM_OUTPUT_CONSTRUCTOR       \
 597         ASM_OUTPUT_DESTRUCTOR SIGNED_CHAR_SPEC
 598
 599 /* And other obsolete target macros, or macros that used to be in target
 600    headers and were not used, and may be obsolete or may never have
 601    been used.  */
 602  #pragma GCC poison INT_ASM_OP ASM_OUTPUT_EH_REGION_BEG                    \
 603         ASM_OUTPUT_EH_REGION_END ASM_OUTPUT_LABELREF_AS_INT                \
 604         DOESNT_NEED_UNWINDER EH_TABLE_LOOKUP OBJC_SELECTORS_WITHOUT_LABELS \
 605         OMIT_EH_TABLE EASY_DIV_EXPR IMPLICIT_FIX_EXPR                      \
 606         LONGJMP_RESTORE_FROM_STACK MAX_INT_TYPE_SIZE ASM_IDENTIFY_GCC      \
 607         STDC_VALUE TRAMPOLINE_ALIGN ASM_IDENTIFY_GCC_AFTER_SOURCE          \
 608         SLOW_ZERO_EXTEND SUBREG_REGNO_OFFSET DWARF_LINE_MIN_INSTR_LENGTH   \
 609         TRADITIONAL_RETURN_FLOAT
 610
 611 #endif /* IN_GCC */
 612
 613 /* Note: not all uses of the `index' token (e.g. variable names and
 614    structure members) have been eliminated.  */
 615 #undef bcopy
 616 #undef bzero
 617 #undef bcmp
 618 #undef rindex
 619  #pragma GCC poison bcopy bzero bcmp rindex
 620
 621 #endif /* GCC >= 3.0 */
 622
 623 #endif /* ! GCC_SYSTEM_H */