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, 2003 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 /* We must include stdarg.h/varargs.h before stdio.h.  */
  27 #ifdef ANSI_PROTOTYPES
  28 #include <stdarg.h>
  29 #else
  30 #include <varargs.h>
  31 #endif
  32
  33 #ifndef va_copy
  34 # ifdef __va_copy
  35 #   define va_copy(d,s)  __va_copy((d),(s))
  36 # else
  37 #   define va_copy(d,s)  ((d) = (s))
  38 # endif
  39 #endif
  40
  41 #ifdef HAVE_STDDEF_H
  42 # include <stddef.h>
  43 #endif
  44
  45 #include <stdio.h>
  46
  47 /* Define a generic NULL if one hasn't already been defined.  */
  48 #ifndef NULL
  49 #define NULL 0
  50 #endif
  51
  52 /* The compiler is not a multi-threaded application and therefore we
  53    do not have to use the locking functions.  In fact, using the locking
  54    functions can cause the compiler to be significantly slower under
  55    I/O bound conditions (such as -g -O0 on very large source files).
  56
  57    HAVE_DECL_PUTC_UNLOCKED actually indicates whether or not the stdio
  58    code is multi-thread safe by default.  If it is set to 0, then do
  59    not worry about using the _unlocked functions.
  60
  61    fputs_unlocked, fwrite_unlocked, and fprintf_unlocked are
  62    extensions and need to be prototyped by hand (since we do not
  63    define _GNU_SOURCE).  */
  64
  65 #if defined HAVE_DECL_PUTC_UNLOCKED && HAVE_DECL_PUTC_UNLOCKED
  66
  67 # ifdef HAVE_PUTC_UNLOCKED
  68 #  undef putc
  69 #  define putc(C, Stream) putc_unlocked (C, Stream)
  70 # endif
  71 # ifdef HAVE_FPUTC_UNLOCKED
  72 #  undef fputc
  73 #  define fputc(C, Stream) fputc_unlocked (C, Stream)
  74 # endif
  75
  76 # ifdef HAVE_FPUTS_UNLOCKED
  77 #  undef fputs
  78 #  define fputs(String, Stream) fputs_unlocked (String, Stream)
  79 #  if defined (HAVE_DECL_FPUTS_UNLOCKED) && !HAVE_DECL_FPUTS_UNLOCKED
  80 extern int fputs_unlocked PARAMS ((const char *, FILE *));
  81 #  endif
  82 # endif
  83 # ifdef HAVE_FWRITE_UNLOCKED
  84 #  undef fwrite
  85 #  define fwrite(Ptr, Size, N, Stream) fwrite_unlocked (Ptr, Size, N, Stream)
  86 #  if defined (HAVE_DECL_FWRITE_UNLOCKED) && !HAVE_DECL_FWRITE_UNLOCKED
  87 extern int fwrite_unlocked PARAMS ((const PTR, size_t, size_t, FILE *));
  88 #  endif
  89 # endif
  90 # ifdef HAVE_FPRINTF_UNLOCKED
  91 #  undef fprintf
  92 /* We can't use a function-like macro here because we don't know if
  93    we have varargs macros.  */
  94 #  define fprintf fprintf_unlocked
  95 #  if defined (HAVE_DECL_FPRINTF_UNLOCKED) && !HAVE_DECL_FPRINTF_UNLOCKED
  96 extern int fprintf_unlocked PARAMS ((FILE *, const char *, ...));
  97 #  endif
  98 # endif
  99
 100 #endif
 101
 102 /* ??? Glibc's fwrite/fread_unlocked macros cause
 103    "warning: signed and unsigned type in conditional expression".  */
 104 #undef fread_unlocked
 105 #undef fwrite_unlocked
 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 /* Some of glibc's string inlines cause warnings.  Plus we'd rather
 121    rely on (and therefore test) GCC's string builtins.  */
 122 #define __NO_STRING_INLINES
 123
 124 #ifdef STRING_WITH_STRINGS
 125 # include <string.h>
 126 # include <strings.h>
 127 #else
 128 # ifdef HAVE_STRING_H
 129 #  include <string.h>
 130 # else
 131 #  ifdef HAVE_STRINGS_H
 132 #   include <strings.h>
 133 #  endif
 134 # endif
 135 #endif
 136
 137 #ifdef HAVE_STDLIB_H
 138 # include <stdlib.h>
 139 #endif
 140
 141 /* If we don't have an overriding definition, set SUCCESS_EXIT_CODE and
 142    FATAL_EXIT_CODE to EXIT_SUCCESS and EXIT_FAILURE respectively,
 143    or 0 and 1 if those macros are not defined.  */
 144 #ifndef SUCCESS_EXIT_CODE
 145 # ifdef EXIT_SUCCESS
 146 #  define SUCCESS_EXIT_CODE EXIT_SUCCESS
 147 # else
 148 #  define SUCCESS_EXIT_CODE 0
 149 # endif
 150 #endif
 151
 152 #ifndef FATAL_EXIT_CODE
 153 # ifdef EXIT_FAILURE
 154 #  define FATAL_EXIT_CODE EXIT_FAILURE
 155 # else
 156 #  define FATAL_EXIT_CODE 1
 157 # endif
 158 #endif
 159
 160 #ifdef HAVE_UNISTD_H
 161 # include <unistd.h>
 162 #endif
 163
 164 #ifdef HAVE_SYS_PARAM_H
 165 # include <sys/param.h>
 166 /* We use this identifier later and it appears in some vendor param.h's.  */
 167 # undef PREFETCH
 168 #endif
 169
 170 #if HAVE_LIMITS_H
 171 # include <limits.h>
 172 #endif
 173
 174 /* Get definitions of HOST_WIDE_INT and HOST_WIDEST_INT.  */
 175 #include "hwint.h"
 176
 177 /* A macro to determine whether a VALUE lies inclusively within a
 178    certain range without evaluating the VALUE more than once.  This
 179    macro won't warn if the VALUE is unsigned and the LOWER bound is
 180    zero, as it would e.g. with "VALUE >= 0 && ...".  Note the LOWER
 181    bound *is* evaluated twice, and LOWER must not be greater than
 182    UPPER.  However the bounds themselves can be either positive or
 183    negative.  */
 184 #define IN_RANGE(VALUE, LOWER, UPPER) \
 185   ((unsigned HOST_WIDE_INT) ((VALUE) - (LOWER)) <= ((UPPER) - (LOWER)))
 186
 187 /* Infrastructure for defining missing _MAX and _MIN macros.  Note that
 188    macros defined with these cannot be used in #if.  */
 189
 190 /* The extra casts work around common compiler bugs.  */
 191 #define INTTYPE_SIGNED(t) (! ((t) 0 < (t) -1))
 192 /* The outer cast is needed to work around a bug in Cray C 5.0.3.0.
 193    It is necessary at least when t == time_t.  */
 194 #define INTTYPE_MINIMUM(t) ((t) (INTTYPE_SIGNED (t) \
 195                              ? ~ (t) 0 << (sizeof(t) * CHAR_BIT - 1) : (t) 0))
 196 #define INTTYPE_MAXIMUM(t) ((t) (~ (t) 0 - INTTYPE_MINIMUM (t)))
 197
 198 /* Use that infrastructure to provide a few constants.  */
 199 #ifndef UCHAR_MAX
 200 # define UCHAR_MAX INTTYPE_MAXIMUM (unsigned char)
 201 #endif
 202
 203 #ifdef TIME_WITH_SYS_TIME
 204 # include <sys/time.h>
 205 # include <time.h>
 206 #else
 207 # if HAVE_SYS_TIME_H
 208 #  include <sys/time.h>
 209 # else
 210 #  ifdef HAVE_TIME_H
 211 #   include <time.h>
 212 #  endif
 213 # endif
 214 #endif
 215
 216 #ifdef HAVE_FCNTL_H
 217 # include <fcntl.h>
 218 #else
 219 # ifdef HAVE_SYS_FILE_H
 220 #  include <sys/file.h>
 221 # endif
 222 #endif
 223
 224 #ifndef SEEK_SET
 225 # define SEEK_SET 0
 226 # define SEEK_CUR 1
 227 # define SEEK_END 2
 228 #endif
 229 #ifndef F_OK
 230 # define F_OK 0
 231 # define X_OK 1
 232 # define W_OK 2
 233 # define R_OK 4
 234 #endif
 235 #ifndef O_RDONLY
 236 # define O_RDONLY 0
 237 #endif
 238 #ifndef O_WRONLY
 239 # define O_WRONLY 1
 240 #endif
 241
 242 /* Some systems define these in, e.g., param.h.  We undefine these names
 243    here to avoid the warnings.  We prefer to use our definitions since we
 244    know they are correct.  */
 245
 246 #undef MIN
 247 #undef MAX
 248 #define MIN(X,Y) ((X) < (Y) ? (X) : (Y))
 249 #define MAX(X,Y) ((X) > (Y) ? (X) : (Y))
 250
 251 /* Returns the least number N such that N * Y >= X.  */
 252 #define CEIL(x,y) (((x) + (y) - 1) / (y))
 253
 254 #ifdef HAVE_SYS_WAIT_H
 255 #include <sys/wait.h>
 256 #endif
 257
 258 #ifndef WIFSIGNALED
 259 #define WIFSIGNALED(S) (((S) & 0xff) != 0 && ((S) & 0xff) != 0x7f)
 260 #endif
 261 #ifndef WTERMSIG
 262 #define WTERMSIG(S) ((S) & 0x7f)
 263 #endif
 264 #ifndef WIFEXITED
 265 #define WIFEXITED(S) (((S) & 0xff) == 0)
 266 #endif
 267 #ifndef WEXITSTATUS
 268 #define WEXITSTATUS(S) (((S) & 0xff00) >> 8)
 269 #endif
 270 #ifndef WSTOPSIG
 271 #define WSTOPSIG WEXITSTATUS
 272 #endif
 273 #ifndef WCOREDUMP
 274 #define WCOREDUMP(S) ((S) & WCOREFLG)
 275 #endif
 276 #ifndef WCOREFLG
 277 #define WCOREFLG 0200
 278 #endif
 279
 280 /* The HAVE_DECL_* macros are three-state, undefined, 0 or 1.  If they
 281    are defined to 0 then we must provide the relevant declaration
 282    here.  These checks will be in the undefined state while configure
 283    is running so be careful to test "defined (HAVE_DECL_*)".  */
 284
 285 #if defined (HAVE_DECL_ATOF) && !HAVE_DECL_ATOF
 286 extern double atof PARAMS ((const char *));
 287 #endif
 288
 289 #if defined (HAVE_DECL_ATOL) && !HAVE_DECL_ATOL
 290 extern long atol PARAMS ((const char *));
 291 #endif
 292
 293 #if defined (HAVE_DECL_FREE) && !HAVE_DECL_FREE
 294 extern void free PARAMS ((PTR));
 295 #endif
 296
 297 #if defined (HAVE_DECL_GETCWD) && !HAVE_DECL_GETCWD
 298 extern char *getcwd PARAMS ((char *, size_t));
 299 #endif
 300
 301 #if defined (HAVE_DECL_GETENV) && !HAVE_DECL_GETENV
 302 extern char *getenv PARAMS ((const char *));
 303 #endif
 304
 305 #if defined (HAVE_DECL_GETOPT) && !HAVE_DECL_GETOPT
 306 extern int getopt PARAMS ((int, char * const *, const char *));
 307 #endif
 308
 309 #if defined (HAVE_DECL_GETWD) && !HAVE_DECL_GETWD
 310 extern char *getwd PARAMS ((char *));
 311 #endif
 312
 313 #if defined (HAVE_DECL_SBRK) && !HAVE_DECL_SBRK
 314 extern PTR sbrk PARAMS ((int));
 315 #endif
 316
 317 #if defined (HAVE_DECL_STRSTR) && !HAVE_DECL_STRSTR
 318 extern char *strstr PARAMS ((const char *, const char *));
 319 #endif
 320
 321 #ifdef HAVE_MALLOC_H
 322 #include <malloc.h>
 323 #endif
 324
 325 #if defined (HAVE_DECL_MALLOC) && !HAVE_DECL_MALLOC
 326 extern PTR malloc PARAMS ((size_t));
 327 #endif
 328
 329 #if defined (HAVE_DECL_CALLOC) && !HAVE_DECL_CALLOC
 330 extern PTR calloc PARAMS ((size_t, size_t));
 331 #endif
 332
 333 #if defined (HAVE_DECL_REALLOC) && !HAVE_DECL_REALLOC
 334 extern PTR realloc PARAMS ((PTR, size_t));
 335 #endif
 336
 337 /* If the system doesn't provide strsignal, we get it defined in
 338    libiberty but no declaration is supplied.  */
 339 #if !defined (HAVE_STRSIGNAL) \
 340     || (defined (HAVE_DECL_STRSIGNAL) && !HAVE_DECL_STRSIGNAL)
 341 # ifndef strsignal
 342 extern const char *strsignal PARAMS ((int));
 343 # endif
 344 #endif
 345
 346 #ifdef HAVE_GETRLIMIT
 347 # if defined (HAVE_DECL_GETRLIMIT) && !HAVE_DECL_GETRLIMIT
 348 #  ifndef getrlimit
 349 #   ifdef ANSI_PROTOTYPES
 350 struct rlimit;
 351 #   endif
 352 extern int getrlimit PARAMS ((int, struct rlimit *));
 353 #  endif
 354 # endif
 355 #endif
 356
 357 #ifdef HAVE_SETRLIMIT
 358 # if defined (HAVE_DECL_SETRLIMIT) && !HAVE_DECL_SETRLIMIT
 359 #  ifndef setrlimit
 360 #   ifdef ANSI_PROTOTYPES
 361 struct rlimit;
 362 #   endif
 363 extern int setrlimit PARAMS ((int, const struct rlimit *));
 364 #  endif
 365 # endif
 366 #endif
 367
 368 /* HAVE_VOLATILE only refers to the stage1 compiler.  We also check
 369    __STDC__ and assume gcc sets it and has volatile in stage >=2.  */
 370 #if !defined(HAVE_VOLATILE) && !defined(__STDC__) && !defined(volatile)
 371 #define volatile
 372 #endif
 373
 374 #if defined (HAVE_DECL_ABORT) && !HAVE_DECL_ABORT
 375 extern void abort PARAMS ((void));
 376 #endif
 377
 378 /* 1 if we have C99 designated initializers.  */
 379 #if !defined(HAVE_DESIGNATED_INITIALIZERS)
 380 #define HAVE_DESIGNATED_INITIALIZERS \
 381   ((GCC_VERSION >= 2007) || (__STDC_VERSION__ >= 199901L))
 382 #endif
 383
 384 /* 1 if we have _Bool.  */
 385 #ifndef HAVE__BOOL
 386 # define HAVE__BOOL \
 387    ((GCC_VERSION >= 3000) || (__STDC_VERSION__ >= 199901L))
 388 #endif
 389
 390
 391 #if HAVE_SYS_STAT_H
 392 # include <sys/stat.h>
 393 #endif
 394
 395 /* Test if something is a normal file.  */
 396 #ifndef S_ISREG
 397 #define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
 398 #endif
 399
 400 /* Test if something is a directory.  */
 401 #ifndef S_ISDIR
 402 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
 403 #endif
 404
 405 /* Test if something is a character special file.  */
 406 #ifndef S_ISCHR
 407 #define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR)
 408 #endif
 409
 410 /* Test if something is a block special file.  */
 411 #ifndef S_ISBLK
 412 #define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK)
 413 #endif
 414
 415 /* Test if something is a socket.  */
 416 #ifndef S_ISSOCK
 417 # ifdef S_IFSOCK
 418 #   define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK)
 419 # else
 420 #   define S_ISSOCK(m) 0
 421 # endif
 422 #endif
 423
 424 /* Test if something is a FIFO.  */
 425 #ifndef S_ISFIFO
 426 # ifdef S_IFIFO
 427 #  define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO)
 428 # else
 429 #  define S_ISFIFO(m) 0
 430 # endif
 431 #endif
 432
 433 /* Approximate O_NONBLOCK.  */
 434 #ifndef O_NONBLOCK
 435 #define O_NONBLOCK O_NDELAY
 436 #endif
 437
 438 /* Approximate O_NOCTTY.  */
 439 #ifndef O_NOCTTY
 440 #define O_NOCTTY 0
 441 #endif
 442
 443 /* Define well known filenos if the system does not define them.  */
 444 #ifndef STDIN_FILENO
 445 # define STDIN_FILENO   0
 446 #endif
 447 #ifndef STDOUT_FILENO
 448 # define STDOUT_FILENO  1
 449 #endif
 450 #ifndef STDERR_FILENO
 451 # define STDERR_FILENO  2
 452 #endif
 453
 454 /* Some systems have mkdir that takes a single argument.  */
 455 #ifdef MKDIR_TAKES_ONE_ARG
 456 # define mkdir(a,b) mkdir(a)
 457 #endif
 458
 459 /* Provide a way to print an address via printf.  */
 460 #ifndef HOST_PTR_PRINTF
 461 # ifdef HAVE_PRINTF_PTR
 462 #  define HOST_PTR_PRINTF "%p"
 463 # else
 464 #  define HOST_PTR_PRINTF \
 465     (sizeof (int) == sizeof (char *) ? "%x" \
 466      : sizeof (long) == sizeof (char *) ? "%lx" : "%llx")
 467 # endif
 468 #endif /* ! HOST_PTR_PRINTF */
 469
 470 /* By default, colon separates directories in a path.  */
 471 #ifndef PATH_SEPARATOR
 472 #define PATH_SEPARATOR ':'
 473 #endif
 474
 475 #ifndef DIR_SEPARATOR
 476 #define DIR_SEPARATOR '/'
 477 #endif
 478
 479 /* Define IS_DIR_SEPARATOR.  */
 480 #ifndef DIR_SEPARATOR_2
 481 # define IS_DIR_SEPARATOR(CH) ((CH) == DIR_SEPARATOR)
 482 #else /* DIR_SEPARATOR_2 */
 483 # define IS_DIR_SEPARATOR(CH) \
 484         (((CH) == DIR_SEPARATOR) || ((CH) == DIR_SEPARATOR_2))
 485 #endif /* DIR_SEPARATOR_2 */
 486
 487 /* Say how to test for an absolute pathname.  On Unix systems, this is if
 488    it starts with a leading slash or a '$', the latter meaning the value of
 489    an environment variable is to be used.  On machine with DOS-based
 490    file systems, it is also absolute if it starts with a drive identifier.  */
 491 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
 492 #define IS_ABSOLUTE_PATHNAME(STR) \
 493   (IS_DIR_SEPARATOR ((STR)[0]) || (STR)[0] == '$' \
 494    || ((STR)[0] != '\0' && (STR)[1] == ':' && IS_DIR_SEPARATOR ((STR)[2])))
 495 #else
 496 #define IS_ABSOLUTE_PATHNAME(STR) \
 497   (IS_DIR_SEPARATOR ((STR)[0]) || (STR)[0] == '$')
 498 #endif
 499
 500 /* Get libiberty declarations.  */
 501 #include "libiberty.h"
 502 #include "symcat.h"
 503
 504 /* Provide a default for the HOST_BIT_BUCKET.
 505    This suffices for POSIX-like hosts.  */
 506
 507 #ifndef HOST_BIT_BUCKET
 508 #define HOST_BIT_BUCKET "/dev/null"
 509 #endif
 510
 511 /* Be conservative and only use enum bitfields with GCC.  Likewise for
 512    char bitfields.
 513    FIXME: provide a complete autoconf test for buggy enum bitfields.  */
 514
 515 #if (GCC_VERSION > 2000)
 516 #define ENUM_BITFIELD(TYPE) enum TYPE
 517 #define CHAR_BITFIELD unsigned char
 518 #else
 519 #define ENUM_BITFIELD(TYPE) unsigned int
 520 #define CHAR_BITFIELD unsigned int
 521 #endif
 522
 523 #ifndef offsetof
 524 #define offsetof(TYPE, MEMBER)  ((size_t) &((TYPE *) 0)->MEMBER)
 525 #endif
 526
 527 /* Traditional C cannot initialize union members of structs.  Provide
 528    a macro which expands appropriately to handle it.  This only works
 529    if you intend to initialize the union member to zero since it relies
 530    on default initialization to zero in the traditional C case.  */
 531 #ifdef __STDC__
 532 #define UNION_INIT_ZERO , {0}
 533 #else
 534 #define UNION_INIT_ZERO
 535 #endif
 536
 537 /* Various error reporting routines want to use __FUNCTION__.  */
 538 #if (GCC_VERSION < 2007)
 539 #ifndef __FUNCTION__
 540 #define __FUNCTION__ "?"
 541 #endif /* ! __FUNCTION__ */
 542 #endif
 543
 544 /* __builtin_expect(A, B) evaluates to A, but notifies the compiler that
 545    the most likely value of A is B.  This feature was added at some point
 546    between 2.95 and 3.0.  Let's use 3.0 as the lower bound for now.  */
 547 #if (GCC_VERSION < 3000)
 548 #define __builtin_expect(a, b) (a)
 549 #endif
 550
 551 /* Provide some sort of boolean type.  We use stdbool.h if it's
 552   available.  This must be after all inclusion of system headers,
 553   as some of them will mess us up.  */
 554 #undef bool
 555 #undef true
 556 #undef false
 557 #undef TRUE
 558 #undef FALSE
 559
 560 #ifdef HAVE_STDBOOL_H
 561 # include <stdbool.h>
 562 #else
 563 # if !HAVE__BOOL
 564 typedef char _Bool;
 565 # endif
 566 # define bool _Bool
 567 # define true 1
 568 # define false 0
 569 #endif
 570
 571 #define TRUE true
 572 #define FALSE false
 573
 574 /* As the last action in this file, we poison the identifiers that
 575    shouldn't be used.  Note, luckily gcc-3.0's token-based integrated
 576    preprocessor won't trip on poisoned identifiers that arrive from
 577    the expansion of macros.  E.g. #define strrchr rindex, won't error
 578    if rindex is poisoned after this directive is issued and later on
 579    strrchr is called.
 580
 581    Note: We define bypass macros for the few cases where we really
 582    want to use the libc memory allocation routines.  Otherwise we
 583    insist you use the "x" versions from libiberty.  */
 584
 585 #define really_call_malloc malloc
 586 #define really_call_calloc calloc
 587 #define really_call_realloc realloc
 588
 589 #if defined(FLEX_SCANNER) || defined(YYBISON)
 590 /* Flex and bison use malloc and realloc.  Yuk.  Note that this means
 591    really_call_* cannot be used in a .l or .y file.  */
 592 #define malloc xmalloc
 593 #define realloc xrealloc
 594 #endif
 595
 596 #if (GCC_VERSION >= 3000)
 597
 598 /* Note autoconf checks for prototype declarations and includes
 599    system.h while doing so.  Only poison these tokens if actually
 600    compiling gcc, so that the autoconf declaration tests for malloc
 601    etc don't spuriously fail.  */
 602 #ifdef IN_GCC
 603 #undef calloc
 604 #undef strdup
 605  #pragma GCC poison calloc strdup
 606
 607 #if !defined(FLEX_SCANNER) && !defined(YYBISON)
 608 #undef malloc
 609 #undef realloc
 610  #pragma GCC poison malloc realloc
 611 #endif
 612
 613 /* Old target macros that have moved to the target hooks structure.  */
 614  #pragma GCC poison ASM_OPEN_PAREN ASM_CLOSE_PAREN                      \
 615         FUNCTION_PROLOGUE FUNCTION_EPILOGUE                             \
 616         FUNCTION_END_PROLOGUE FUNCTION_BEGIN_EPILOGUE                   \
 617         DECL_MACHINE_ATTRIBUTES COMP_TYPE_ATTRIBUTES INSERT_ATTRIBUTES  \
 618         VALID_MACHINE_DECL_ATTRIBUTE VALID_MACHINE_TYPE_ATTRIBUTE       \
 619         SET_DEFAULT_TYPE_ATTRIBUTES SET_DEFAULT_DECL_ATTRIBUTES         \
 620         MERGE_MACHINE_TYPE_ATTRIBUTES MERGE_MACHINE_DECL_ATTRIBUTES     \
 621         MD_INIT_BUILTINS MD_EXPAND_BUILTIN ASM_OUTPUT_CONSTRUCTOR       \
 622         ASM_OUTPUT_DESTRUCTOR SIGNED_CHAR_SPEC MAX_CHAR_TYPE_SIZE       \
 623         WCHAR_UNSIGNED UNIQUE_SECTION SELECT_SECTION SELECT_RTX_SECTION \
 624         ENCODE_SECTION_INFO STRIP_NAME_ENCODING ASM_GLOBALIZE_LABEL     \
 625         ASM_OUTPUT_MI_THUNK CONST_COSTS RTX_COSTS DEFAULT_RTX_COSTS     \
 626         ADDRESS_COST MACHINE_DEPENDENT_REORG
 627
 628 /* Other obsolete target macros, or macros that used to be in target
 629    headers and were not used, and may be obsolete or may never have
 630    been used.  */
 631  #pragma GCC poison INT_ASM_OP ASM_OUTPUT_EH_REGION_BEG CPP_PREDEFINES     \
 632         ASM_OUTPUT_EH_REGION_END ASM_OUTPUT_LABELREF_AS_INT                \
 633         DOESNT_NEED_UNWINDER EH_TABLE_LOOKUP OBJC_SELECTORS_WITHOUT_LABELS \
 634         OMIT_EH_TABLE EASY_DIV_EXPR IMPLICIT_FIX_EXPR                      \
 635         LONGJMP_RESTORE_FROM_STACK MAX_INT_TYPE_SIZE ASM_IDENTIFY_GCC      \
 636         STDC_VALUE TRAMPOLINE_ALIGN ASM_IDENTIFY_GCC_AFTER_SOURCE          \
 637         SLOW_ZERO_EXTEND SUBREG_REGNO_OFFSET DWARF_LINE_MIN_INSTR_LENGTH   \
 638         TRADITIONAL_RETURN_FLOAT NO_BUILTIN_SIZE_TYPE                      \
 639         NO_BUILTIN_PTRDIFF_TYPE NO_BUILTIN_WCHAR_TYPE NO_BUILTIN_WINT_TYPE \
 640         BLOCK_PROFILER BLOCK_PROFILER_CODE FUNCTION_BLOCK_PROFILER         \
 641         FUNCTION_BLOCK_PROFILER_EXIT MACHINE_STATE_SAVE                    \
 642         MACHINE_STATE_RESTORE SCCS_DIRECTIVE SECTION_ASM_OP                \
 643         ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL ASM_OUTPUT_INTERNAL_LABEL
 644
 645 /* Hooks that are no longer used.  */
 646  #pragma GCC poison LANG_HOOKS_FUNCTION_MARK LANG_HOOKS_FUNCTION_FREE   \
 647         LANG_HOOKS_MARK_TREE
 648
 649 #endif /* IN_GCC */
 650
 651 /* Note: not all uses of the `index' token (e.g. variable names and
 652    structure members) have been eliminated.  */
 653 #undef bcopy
 654 #undef bzero
 655 #undef bcmp
 656 #undef rindex
 657  #pragma GCC poison bcopy bzero bcmp rindex
 658
 659 #endif /* GCC >= 3.0 */
 660
 661 #endif /* ! GCC_SYSTEM_H */