gcc/system.h

   1 /* Get common system includes and various definitions and declarations based
   2    on autoconf macros.
   3    Copyright (C) 1998-2021 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 3, 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 COPYING3.  If not see
  19 <http://www.gnu.org/licenses/>.  */
  20
  21
  22 #ifndef GCC_SYSTEM_H
  23 #define GCC_SYSTEM_H
  24
  25 /* Define this so that inttypes.h defines the PRI?64 macros even
  26    when compiling with a C++ compiler.  Define it here so in the
  27    event inttypes.h gets pulled in by another header it is already
  28    defined.  */
  29 #define __STDC_FORMAT_MACROS
  30
  31 /* We must include stdarg.h before stdio.h.  */
  32 #include <stdarg.h>
  33
  34 #ifndef va_copy
  35 # ifdef __va_copy
  36 #   define va_copy(d,s)  __va_copy (d, s)
  37 # else
  38 #   define va_copy(d,s)  ((d) = (s))
  39 # endif
  40 #endif
  41
  42 #ifdef HAVE_STDDEF_H
  43 # include <stddef.h>
  44 #endif
  45
  46 #include <stdio.h>
  47
  48 /* Define a generic NULL if one hasn't already been defined.  */
  49 #ifndef NULL
  50 #define NULL 0
  51 #endif
  52
  53 /* Use the unlocked open routines from libiberty.  */
  54
  55 /* Some of these are #define on some systems, e.g. on AIX to redirect
  56    the names to 64bit capable functions for LARGE_FILES support. These
  57    redefs are pointless here so we can override them.  */
  58
  59 #undef fopen
  60 #undef freopen
  61
  62 #define fopen(PATH, MODE) fopen_unlocked (PATH, MODE)
  63 #define fdopen(FILDES, MODE) fdopen_unlocked (FILDES, MODE)
  64 #define freopen(PATH, MODE, STREAM) freopen_unlocked (PATH, MODE, STREAM)
  65
  66 /* The compiler is not a multi-threaded application and therefore we
  67    do not have to use the locking functions.  In fact, using the locking
  68    functions can cause the compiler to be significantly slower under
  69    I/O bound conditions (such as -g -O0 on very large source files).
  70
  71    HAVE_DECL_PUTC_UNLOCKED actually indicates whether or not the stdio
  72    code is multi-thread safe by default.  If it is set to 0, then do
  73    not worry about using the _unlocked functions.
  74
  75    fputs_unlocked, fwrite_unlocked, and fprintf_unlocked are
  76    extensions and need to be prototyped by hand (since we do not
  77    define _GNU_SOURCE).  */
  78
  79 #if defined HAVE_DECL_PUTC_UNLOCKED && HAVE_DECL_PUTC_UNLOCKED
  80
  81 # ifdef HAVE_PUTC_UNLOCKED
  82 #  undef putc
  83 #  define putc(C, Stream) putc_unlocked (C, Stream)
  84 # endif
  85 # ifdef HAVE_PUTCHAR_UNLOCKED
  86 #  undef putchar
  87 #  define putchar(C) putchar_unlocked (C)
  88 # endif
  89 # ifdef HAVE_GETC_UNLOCKED
  90 #  undef getc
  91 #  define getc(Stream) getc_unlocked (Stream)
  92 # endif
  93 # ifdef HAVE_GETCHAR_UNLOCKED
  94 #  undef getchar
  95 #  define getchar() getchar_unlocked ()
  96 # endif
  97 # ifdef HAVE_FPUTC_UNLOCKED
  98 #  undef fputc
  99 #  define fputc(C, Stream) fputc_unlocked (C, Stream)
 100 # endif
 101
 102 #ifdef __cplusplus
 103 extern "C" {
 104 #endif
 105
 106 # ifdef HAVE_CLEARERR_UNLOCKED
 107 #  undef clearerr
 108 #  define clearerr(Stream) clearerr_unlocked (Stream)
 109 #  if defined (HAVE_DECL_CLEARERR_UNLOCKED) && !HAVE_DECL_CLEARERR_UNLOCKED
 110 extern void clearerr_unlocked (FILE *);
 111 #  endif
 112 # endif
 113 # ifdef HAVE_FEOF_UNLOCKED
 114 #  undef feof
 115 #  define feof(Stream) feof_unlocked (Stream)
 116 #  if defined (HAVE_DECL_FEOF_UNLOCKED) && !HAVE_DECL_FEOF_UNLOCKED
 117 extern int feof_unlocked (FILE *);
 118 #  endif
 119 # endif
 120 # ifdef HAVE_FILENO_UNLOCKED
 121 #  undef fileno
 122 #  define fileno(Stream) fileno_unlocked (Stream)
 123 #  if defined (HAVE_DECL_FILENO_UNLOCKED) && !HAVE_DECL_FILENO_UNLOCKED
 124 extern int fileno_unlocked (FILE *);
 125 #  endif
 126 # endif
 127 # ifdef HAVE_FFLUSH_UNLOCKED
 128 #  undef fflush
 129 #  define fflush(Stream) fflush_unlocked (Stream)
 130 #  if defined (HAVE_DECL_FFLUSH_UNLOCKED) && !HAVE_DECL_FFLUSH_UNLOCKED
 131 extern int fflush_unlocked (FILE *);
 132 #  endif
 133 # endif
 134 # ifdef HAVE_FGETC_UNLOCKED
 135 #  undef fgetc
 136 #  define fgetc(Stream) fgetc_unlocked (Stream)
 137 #  if defined (HAVE_DECL_FGETC_UNLOCKED) && !HAVE_DECL_FGETC_UNLOCKED
 138 extern int fgetc_unlocked (FILE *);
 139 #  endif
 140 # endif
 141 # ifdef HAVE_FGETS_UNLOCKED
 142 #  undef fgets
 143 #  define fgets(S, n, Stream) fgets_unlocked (S, n, Stream)
 144 #  if defined (HAVE_DECL_FGETS_UNLOCKED) && !HAVE_DECL_FGETS_UNLOCKED
 145 extern char *fgets_unlocked (char *, int, FILE *);
 146 #  endif
 147 # endif
 148 # ifdef HAVE_FPUTS_UNLOCKED
 149 #  undef fputs
 150 #  define fputs(String, Stream) fputs_unlocked (String, Stream)
 151 #  if defined (HAVE_DECL_FPUTS_UNLOCKED) && !HAVE_DECL_FPUTS_UNLOCKED
 152 extern int fputs_unlocked (const char *, FILE *);
 153 #  endif
 154 # endif
 155 # ifdef HAVE_FERROR_UNLOCKED
 156 #  undef ferror
 157 #  define ferror(Stream) ferror_unlocked (Stream)
 158 #  if defined (HAVE_DECL_FERROR_UNLOCKED) && !HAVE_DECL_FERROR_UNLOCKED
 159 extern int ferror_unlocked (FILE *);
 160 #  endif
 161 # endif
 162 # ifdef HAVE_FREAD_UNLOCKED
 163 #  undef fread
 164 #  define fread(Ptr, Size, N, Stream) fread_unlocked (Ptr, Size, N, Stream)
 165 #  if defined (HAVE_DECL_FREAD_UNLOCKED) && !HAVE_DECL_FREAD_UNLOCKED
 166 extern size_t fread_unlocked (void *, size_t, size_t, FILE *);
 167 #  endif
 168 # endif
 169 # ifdef HAVE_FWRITE_UNLOCKED
 170 #  undef fwrite
 171 #  define fwrite(Ptr, Size, N, Stream) fwrite_unlocked (Ptr, Size, N, Stream)
 172 #  if defined (HAVE_DECL_FWRITE_UNLOCKED) && !HAVE_DECL_FWRITE_UNLOCKED
 173 extern size_t fwrite_unlocked (const void *, size_t, size_t, FILE *);
 174 #  endif
 175 # endif
 176 # ifdef HAVE_FPRINTF_UNLOCKED
 177 #  undef fprintf
 178 /* We can't use a function-like macro here because we don't know if
 179    we have varargs macros.  */
 180 #  define fprintf fprintf_unlocked
 181 #  if defined (HAVE_DECL_FPRINTF_UNLOCKED) && !HAVE_DECL_FPRINTF_UNLOCKED
 182 extern int fprintf_unlocked (FILE *, const char *, ...);
 183 #  endif
 184 # endif
 185
 186 #ifdef __cplusplus
 187 }
 188 #endif
 189
 190 #endif
 191
 192 /* ??? Glibc's fwrite/fread_unlocked macros cause
 193    "warning: signed and unsigned type in conditional expression".  */
 194 #undef fread_unlocked
 195 #undef fwrite_unlocked
 196
 197 /* Include <string> before "safe-ctype.h" to avoid GCC poisoning
 198    the ctype macros through safe-ctype.h */
 199
 200 #ifdef __cplusplus
 201 #ifdef INCLUDE_STRING
 202 # include <string>
 203 #endif
 204 #endif
 205
 206 /* There are an extraordinary number of issues with <ctype.h>.
 207    The last straw is that it varies with the locale.  Use libiberty's
 208    replacement instead.  */
 209 #include "safe-ctype.h"
 210
 211 #include <sys/types.h>
 212
 213 #include <errno.h>
 214
 215 #if !defined (errno) && defined (HAVE_DECL_ERRNO) && !HAVE_DECL_ERRNO
 216 extern int errno;
 217 #endif
 218
 219 #ifdef __cplusplus
 220 #if defined (INCLUDE_ALGORITHM) || !defined (HAVE_SWAP_IN_UTILITY)
 221 # include <algorithm>
 222 #endif
 223 #ifdef INCLUDE_LIST
 224 # include <list>
 225 #endif
 226 #ifdef INCLUDE_MAP
 227 # include <map>
 228 #endif
 229 #ifdef INCLUDE_SET
 230 # include <set>
 231 #endif
 232 #ifdef INCLUDE_VECTOR
 233 # include <vector>
 234 #endif
 235 #ifdef INCLUDE_ARRAY
 236 # include <array>
 237 #endif
 238 #ifdef INCLUDE_FUNCTIONAL
 239 # include <functional>
 240 #endif
 241 # include <cstring>
 242 # include <new>
 243 # include <utility>
 244 # include <type_traits>
 245 #endif
 246
 247 /* Some of glibc's string inlines cause warnings.  Plus we'd rather
 248    rely on (and therefore test) GCC's string builtins.  */
 249 #define __NO_STRING_INLINES
 250
 251 #ifdef STRING_WITH_STRINGS
 252 # include <string.h>
 253 # include <strings.h>
 254 #else
 255 # ifdef HAVE_STRING_H
 256 #  include <string.h>
 257 # else
 258 #  ifdef HAVE_STRINGS_H
 259 #   include <strings.h>
 260 #  endif
 261 # endif
 262 #endif
 263
 264 #ifdef HAVE_STDLIB_H
 265 # include <stdlib.h>
 266 #endif
 267
 268 /* When compiling C++ we need to include <cstdlib> as well as <stdlib.h> so
 269    that it is processed before we poison "malloc"; otherwise, if a source
 270    file uses a standard library header that includes <cstdlib>, we will get
 271    an error about 'using std::malloc'.  */
 272 #ifdef __cplusplus
 273 #include <cstdlib>
 274 #endif
 275
 276 /* Undef vec_free from AIX stdlib.h header which conflicts with vec.h.  */
 277 #undef vec_free
 278
 279 /* If we don't have an overriding definition, set SUCCESS_EXIT_CODE and
 280    FATAL_EXIT_CODE to EXIT_SUCCESS and EXIT_FAILURE respectively,
 281    or 0 and 1 if those macros are not defined.  */
 282 #ifndef SUCCESS_EXIT_CODE
 283 # ifdef EXIT_SUCCESS
 284 #  define SUCCESS_EXIT_CODE EXIT_SUCCESS
 285 # else
 286 #  define SUCCESS_EXIT_CODE 0
 287 # endif
 288 #endif
 289
 290 #ifndef FATAL_EXIT_CODE
 291 # ifdef EXIT_FAILURE
 292 #  define FATAL_EXIT_CODE EXIT_FAILURE
 293 # else
 294 #  define FATAL_EXIT_CODE 1
 295 # endif
 296 #endif
 297
 298 #define ICE_EXIT_CODE 4
 299
 300 #ifdef HAVE_UNISTD_H
 301 # include <unistd.h>
 302 #endif
 303
 304 #ifdef HAVE_SYS_PARAM_H
 305 # include <sys/param.h>
 306 /* We use these identifiers later and they appear in some vendor param.h's.  */
 307 # undef PREFETCH
 308 # undef m_slot
 309 #endif
 310
 311 #if HAVE_LIMITS_H
 312 # include <limits.h>
 313 #endif
 314
 315 /* A macro to determine whether a VALUE lies inclusively within a
 316    certain range without evaluating the VALUE more than once.  This
 317    macro won't warn if the VALUE is unsigned and the LOWER bound is
 318    zero, as it would e.g. with "VALUE >= 0 && ...".  Note the LOWER
 319    bound *is* evaluated twice, and LOWER must not be greater than
 320    UPPER.  However the bounds themselves can be either positive or
 321    negative.  */
 322 #define IN_RANGE(VALUE, LOWER, UPPER) \
 323   ((unsigned HOST_WIDE_INT) (VALUE) - (unsigned HOST_WIDE_INT) (LOWER) \
 324    <= (unsigned HOST_WIDE_INT) (UPPER) - (unsigned HOST_WIDE_INT) (LOWER))
 325
 326 /* Infrastructure for defining missing _MAX and _MIN macros.  Note that
 327    macros defined with these cannot be used in #if.  */
 328
 329 /* The extra casts work around common compiler bugs.  */
 330 #define INTTYPE_SIGNED(t) (! ((t) 0 < (t) -1))
 331 /* The outer cast is needed to work around a bug in Cray C 5.0.3.0.
 332    It is necessary at least when t == time_t.  */
 333 #define INTTYPE_MINIMUM(t) ((t) (INTTYPE_SIGNED (t) \
 334                             ? (t) 1 << (sizeof (t) * CHAR_BIT - 1) : (t) 0))
 335 #define INTTYPE_MAXIMUM(t) ((t) (~ (t) 0 - INTTYPE_MINIMUM (t)))
 336
 337 /* Use that infrastructure to provide a few constants.  */
 338 #ifndef UCHAR_MAX
 339 # define UCHAR_MAX INTTYPE_MAXIMUM (unsigned char)
 340 #endif
 341
 342 #ifdef TIME_WITH_SYS_TIME
 343 # include <sys/time.h>
 344 # include <time.h>
 345 #else
 346 # if HAVE_SYS_TIME_H
 347 #  include <sys/time.h>
 348 # else
 349 #  ifdef HAVE_TIME_H
 350 #   include <time.h>
 351 #  endif
 352 # endif
 353 #endif
 354
 355 #ifdef HAVE_FCNTL_H
 356 # include <fcntl.h>
 357 #else
 358 # ifdef HAVE_SYS_FILE_H
 359 #  include <sys/file.h>
 360 # endif
 361 #endif
 362
 363 #ifdef HAVE_SYS_LOCKING_H
 364 # include <sys/locking.h>
 365 #endif
 366
 367 #ifndef SEEK_SET
 368 # define SEEK_SET 0
 369 # define SEEK_CUR 1
 370 # define SEEK_END 2
 371 #endif
 372 #ifndef F_OK
 373 # define F_OK 0
 374 # define X_OK 1
 375 # define W_OK 2
 376 # define R_OK 4
 377 #endif
 378 #ifndef O_RDONLY
 379 # define O_RDONLY 0
 380 #endif
 381 #ifndef O_WRONLY
 382 # define O_WRONLY 1
 383 #endif
 384 #ifndef O_BINARY
 385 # define O_BINARY 0
 386 #endif
 387
 388 /* Some systems define these in, e.g., param.h.  We undefine these names
 389    here to avoid the warnings.  We prefer to use our definitions since we
 390    know they are correct.  */
 391
 392 #undef MIN
 393 #undef MAX
 394 #define MIN(X,Y) ((X) < (Y) ? (X) : (Y))
 395 #define MAX(X,Y) ((X) > (Y) ? (X) : (Y))
 396
 397 /* Returns the least number N such that N * Y >= X.  */
 398 #define CEIL(x,y) (((x) + (y) - 1) / (y))
 399
 400 /* This macro rounds x up to the y boundary.  */
 401 #define ROUND_UP(x,y) (((x) + (y) - 1) & ~((y) - 1))
 402
 403 /* This macro rounds x down to the y boundary.  */
 404 #define ROUND_DOWN(x,y) ((x) & ~((y) - 1))
 405
 406 #ifdef HAVE_SYS_WAIT_H
 407 #include <sys/wait.h>
 408 #endif
 409
 410 #ifndef WIFSIGNALED
 411 #define WIFSIGNALED(S) (((S) & 0xff) != 0 && ((S) & 0xff) != 0x7f)
 412 #endif
 413 #ifndef WTERMSIG
 414 #define WTERMSIG(S) ((S) & 0x7f)
 415 #endif
 416 #ifndef WIFEXITED
 417 #define WIFEXITED(S) (((S) & 0xff) == 0)
 418 #endif
 419 #ifndef WEXITSTATUS
 420 #define WEXITSTATUS(S) (((S) & 0xff00) >> 8)
 421 #endif
 422 #ifndef WSTOPSIG
 423 #define WSTOPSIG WEXITSTATUS
 424 #endif
 425 #ifndef WCOREDUMP
 426 #define WCOREDUMP(S) ((S) & WCOREFLG)
 427 #endif
 428 #ifndef WCOREFLG
 429 #define WCOREFLG 0200
 430 #endif
 431
 432 #include <signal.h>
 433 #if !defined (SIGCHLD) && defined (SIGCLD)
 434 # define SIGCHLD SIGCLD
 435 #endif
 436
 437 #ifdef HAVE_SYS_MMAN_H
 438 # include <sys/mman.h>
 439 #endif
 440
 441 #ifndef MAP_FAILED
 442 # define MAP_FAILED ((void *)-1)
 443 #endif
 444
 445 #if !defined (MAP_ANONYMOUS) && defined (MAP_ANON)
 446 # define MAP_ANONYMOUS MAP_ANON
 447 #endif
 448
 449 #ifdef HAVE_SYS_RESOURCE_H
 450 # include <sys/resource.h>
 451 #endif
 452
 453 #ifdef HAVE_SYS_TIMES_H
 454 # include <sys/times.h>
 455 #endif
 456
 457 /* The HAVE_DECL_* macros are three-state, undefined, 0 or 1.  If they
 458    are defined to 0 then we must provide the relevant declaration
 459    here.  These checks will be in the undefined state while configure
 460    is running so be careful to test "defined (HAVE_DECL_*)".  */
 461
 462 #ifdef __cplusplus
 463 extern "C" {
 464 #endif
 465
 466 #if defined (HAVE_DECL_ATOF) && !HAVE_DECL_ATOF
 467 extern double atof (const char *);
 468 #endif
 469
 470 #if defined (HAVE_DECL_ATOL) && !HAVE_DECL_ATOL
 471 extern long atol (const char *);
 472 #endif
 473
 474 #if defined (HAVE_DECL_FREE) && !HAVE_DECL_FREE
 475 extern void free (void *);
 476 #endif
 477
 478 #if defined (HAVE_DECL_GETCWD) && !HAVE_DECL_GETCWD
 479 extern char *getcwd (char *, size_t);
 480 #endif
 481
 482 #if defined (HAVE_DECL_GETENV) && !HAVE_DECL_GETENV
 483 extern char *getenv (const char *);
 484 #endif
 485
 486 #if defined (HAVE_DECL_GETOPT) && !HAVE_DECL_GETOPT
 487 extern int getopt (int, char * const *, const char *);
 488 #endif
 489
 490 #if defined (HAVE_DECL_GETPAGESIZE) && !HAVE_DECL_GETPAGESIZE
 491 extern int getpagesize (void);
 492 #endif
 493
 494 #if defined (HAVE_DECL_GETWD) && !HAVE_DECL_GETWD
 495 extern char *getwd (char *);
 496 #endif
 497
 498 #if defined (HAVE_DECL_SBRK) && !HAVE_DECL_SBRK
 499 extern void *sbrk (int);
 500 #endif
 501
 502 #if defined (HAVE_DECL_SETENV) && !HAVE_DECL_SETENV
 503 int setenv(const char *, const char *, int);
 504 #endif
 505
 506 #if defined (HAVE_DECL_STRSTR) && !HAVE_DECL_STRSTR
 507 extern char *strstr (const char *, const char *);
 508 #endif
 509
 510 #if defined (HAVE_DECL_STPCPY) && !HAVE_DECL_STPCPY
 511 extern char *stpcpy (char *, const char *);
 512 #endif
 513
 514 #if defined (HAVE_DECL_UNSETENV) && !HAVE_DECL_UNSETENV
 515 int unsetenv(const char *);
 516 #endif
 517
 518 #if defined (HAVE_DECL_MALLOC) && !HAVE_DECL_MALLOC
 519 extern void *malloc (size_t);
 520 #endif
 521
 522 #if defined (HAVE_DECL_CALLOC) && !HAVE_DECL_CALLOC
 523 extern void *calloc (size_t, size_t);
 524 #endif
 525
 526 #if defined (HAVE_DECL_REALLOC) && !HAVE_DECL_REALLOC
 527 extern void *realloc (void *, size_t);
 528 #endif
 529
 530 #ifdef __cplusplus
 531 }
 532 #endif
 533
 534 #ifdef HAVE_STDINT_H
 535 #include <stdint.h>
 536 #endif
 537
 538 #ifdef HAVE_INTTYPES_H
 539 #include <inttypes.h>
 540 #endif
 541
 542 #ifndef SIZE_MAX
 543 # define SIZE_MAX INTTYPE_MAXIMUM (size_t)
 544 #endif
 545
 546 #ifdef __cplusplus
 547 extern "C" {
 548 #endif
 549
 550 /* If the system doesn't provide strsignal, we get it defined in
 551    libiberty but no declaration is supplied.  */
 552 #if !defined (HAVE_STRSIGNAL) \
 553     || (defined (HAVE_DECL_STRSIGNAL) && !HAVE_DECL_STRSIGNAL)
 554 # ifndef strsignal
 555 extern const char *strsignal (int);
 556 # endif
 557 #endif
 558
 559 #ifdef HAVE_GETRLIMIT
 560 # if defined (HAVE_DECL_GETRLIMIT) && !HAVE_DECL_GETRLIMIT
 561 #  ifndef getrlimit
 562 struct rlimit;
 563 extern int getrlimit (int, struct rlimit *);
 564 #  endif
 565 # endif
 566 #endif
 567
 568 #ifdef HAVE_SETRLIMIT
 569 # if defined (HAVE_DECL_SETRLIMIT) && !HAVE_DECL_SETRLIMIT
 570 #  ifndef setrlimit
 571 struct rlimit;
 572 extern int setrlimit (int, const struct rlimit *);
 573 #  endif
 574 # endif
 575 #endif
 576
 577 #if defined (HAVE_DECL_ABORT) && !HAVE_DECL_ABORT
 578 extern void abort (void);
 579 #endif
 580
 581 #if defined (HAVE_DECL_SNPRINTF) && !HAVE_DECL_SNPRINTF
 582 extern int snprintf (char *, size_t, const char *, ...);
 583 #endif
 584
 585 #if defined (HAVE_DECL_VSNPRINTF) && !HAVE_DECL_VSNPRINTF
 586 extern int vsnprintf (char *, size_t, const char *, va_list);
 587 #endif
 588
 589 #ifdef __cplusplus
 590 }
 591 #endif
 592
 593 /* 1 if we have C99 designated initializers.  */
 594 #if !defined(HAVE_DESIGNATED_INITIALIZERS)
 595 #ifdef __cplusplus
 596 #define HAVE_DESIGNATED_INITIALIZERS 0
 597 #else
 598 #define HAVE_DESIGNATED_INITIALIZERS \
 599   ((GCC_VERSION >= 2007) || (__STDC_VERSION__ >= 199901L))
 600 #endif
 601 #endif
 602
 603 #if !defined(HAVE_DESIGNATED_UNION_INITIALIZERS)
 604 #ifdef __cplusplus
 605 #define HAVE_DESIGNATED_UNION_INITIALIZERS (GCC_VERSION >= 4007)
 606 #else
 607 #define HAVE_DESIGNATED_UNION_INITIALIZERS \
 608   ((GCC_VERSION >= 2007) || (__STDC_VERSION__ >= 199901L))
 609 #endif
 610 #endif
 611
 612 #if HAVE_SYS_STAT_H
 613 # include <sys/stat.h>
 614 #endif
 615
 616 /* Test if something is a normal file.  */
 617 #ifndef S_ISREG
 618 #define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
 619 #endif
 620
 621 /* Test if something is a directory.  */
 622 #ifndef S_ISDIR
 623 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
 624 #endif
 625
 626 /* Test if something is a character special file.  */
 627 #ifndef S_ISCHR
 628 #define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR)
 629 #endif
 630
 631 /* Test if something is a block special file.  */
 632 #ifndef S_ISBLK
 633 #define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK)
 634 #endif
 635
 636 /* Test if something is a socket.  */
 637 #ifndef S_ISSOCK
 638 # ifdef S_IFSOCK
 639 #   define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK)
 640 # else
 641 #   define S_ISSOCK(m) 0
 642 # endif
 643 #endif
 644
 645 /* Test if something is a FIFO.  */
 646 #ifndef S_ISFIFO
 647 # ifdef S_IFIFO
 648 #  define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO)
 649 # else
 650 #  define S_ISFIFO(m) 0
 651 # endif
 652 #endif
 653
 654 /* Define well known filenos if the system does not define them.  */
 655 #ifndef STDIN_FILENO
 656 # define STDIN_FILENO   0
 657 #endif
 658 #ifndef STDOUT_FILENO
 659 # define STDOUT_FILENO  1
 660 #endif
 661 #ifndef STDERR_FILENO
 662 # define STDERR_FILENO  2
 663 #endif
 664
 665 /* Some systems have mkdir that takes a single argument.  */
 666 #ifdef MKDIR_TAKES_ONE_ARG
 667 # define mkdir(a,b) mkdir (a)
 668 #endif
 669
 670 #ifndef HAVE_KILL
 671 # define kill(p,s) raise (s)
 672 #endif
 673
 674 /* Provide a way to print an address via printf.  */
 675 #ifndef HOST_PTR_PRINTF
 676 #define HOST_PTR_PRINTF "%p"
 677 #endif /* ! HOST_PTR_PRINTF */
 678
 679 /* By default, colon separates directories in a path.  */
 680 #ifndef PATH_SEPARATOR
 681 #define PATH_SEPARATOR ':'
 682 #endif
 683
 684 /* Filename handling macros.  */
 685 #include "filenames.h"
 686
 687 /* These should be phased out in favor of IS_DIR_SEPARATOR, where possible.  */
 688 #ifndef DIR_SEPARATOR
 689 # define DIR_SEPARATOR '/'
 690 # ifdef HAVE_DOS_BASED_FILE_SYSTEM
 691 #  define DIR_SEPARATOR_2 '\\'
 692 # endif
 693 #endif
 694
 695 #if defined (ENABLE_PLUGIN) && defined (HAVE_DLFCN_H)
 696 /* If plugin support is enabled, we could use libdl.  */
 697 #include <dlfcn.h>
 698 #endif
 699
 700 /* Do not introduce a gmp.h dependency on the build system.  */
 701 #ifndef GENERATOR_FILE
 702 #include <gmp.h>
 703 #endif
 704
 705 /* Get libiberty declarations.  */
 706 #include "libiberty.h"
 707
 708 #undef FFS  /* Some systems predefine this symbol; don't let it interfere.  */
 709 #undef FLOAT /* Likewise.  */
 710 #undef ABS /* Likewise.  */
 711 #undef PC /* Likewise.  */
 712
 713 /* Provide a default for the HOST_BIT_BUCKET.
 714    This suffices for POSIX-like hosts.  */
 715
 716 #ifndef HOST_BIT_BUCKET
 717 #define HOST_BIT_BUCKET "/dev/null"
 718 #endif
 719
 720 #ifndef offsetof
 721 #define offsetof(TYPE, MEMBER)  ((size_t) &((TYPE *) 0)->MEMBER)
 722 #endif
 723
 724 /* Various error reporting routines want to use __FUNCTION__.  */
 725 #if (GCC_VERSION < 2007)
 726 #ifndef __FUNCTION__
 727 #define __FUNCTION__ "?"
 728 #endif /* ! __FUNCTION__ */
 729 #endif
 730
 731 /* __builtin_expect(A, B) evaluates to A, but notifies the compiler that
 732    the most likely value of A is B.  This feature was added at some point
 733    between 2.95 and 3.0.  Let's use 3.0 as the lower bound for now.  */
 734 #if (GCC_VERSION < 3000)
 735 #define __builtin_expect(a, b) (a)
 736 #endif
 737
 738 /* Some of the headers included by <memory> can use "abort" within a
 739    namespace, e.g. "_VSTD::abort();", which fails after we use the
 740    preprocessor to redefine "abort" as "fancy_abort" below.
 741    Given that unique-ptr.h can use "free", we need to do this after "free"
 742    is declared but before "abort" is overridden.  */
 743
 744 #ifdef INCLUDE_UNIQUE_PTR
 745 # include "unique-ptr.h"
 746 #endif
 747
 748 #ifdef INCLUDE_MALLOC_H
 749 #if defined(HAVE_MALLINFO) || defined(HAVE_MALLINFO2)
 750 #include <malloc.h>
 751 #endif
 752 #endif
 753
 754 #ifdef INCLUDE_ISL
 755 #ifdef HAVE_isl
 756 #include <isl/options.h>
 757 #include <isl/ctx.h>
 758 #include <isl/val.h>
 759 #include <isl/set.h>
 760 #include <isl/union_set.h>
 761 #include <isl/map.h>
 762 #include <isl/union_map.h>
 763 #include <isl/aff.h>
 764 #include <isl/constraint.h>
 765 #include <isl/flow.h>
 766 #include <isl/ilp.h>
 767 #include <isl/schedule.h>
 768 #include <isl/ast_build.h>
 769 #include <isl/schedule_node.h>
 770 #include <isl/id.h>
 771 #include <isl/space.h>
 772 #endif
 773 #endif
 774
 775 /* Redefine abort to report an internal error w/o coredump, and
 776    reporting the location of the error in the source file.  */
 777 extern void fancy_abort (const char *, int, const char *)
 778                                          ATTRIBUTE_NORETURN ATTRIBUTE_COLD;
 779 #define abort() fancy_abort (__FILE__, __LINE__, __FUNCTION__)
 780
 781 /* Use gcc_assert(EXPR) to test invariants.  */
 782 #if ENABLE_ASSERT_CHECKING
 783 #define gcc_assert(EXPR)                                                \
 784    ((void)(!(EXPR) ? fancy_abort (__FILE__, __LINE__, __FUNCTION__), 0 : 0))
 785 #elif (GCC_VERSION >= 4005)
 786 #define gcc_assert(EXPR)                                                \
 787   ((void)(__builtin_expect (!(EXPR), 0) ? __builtin_unreachable (), 0 : 0))
 788 #else
 789 /* Include EXPR, so that unused variable warnings do not occur.  */
 790 #define gcc_assert(EXPR) ((void)(0 && (EXPR)))
 791 #endif
 792
 793 #if CHECKING_P
 794 #define gcc_checking_assert(EXPR) gcc_assert (EXPR)
 795 #else
 796 /* N.B.: in release build EXPR is not evaluated.  */
 797 #define gcc_checking_assert(EXPR) ((void)(0 && (EXPR)))
 798 #endif
 799
 800 #if GCC_VERSION >= 4000
 801 #define ALWAYS_INLINE inline __attribute__ ((always_inline))
 802 #else
 803 #define ALWAYS_INLINE inline
 804 #endif
 805
 806 #if GCC_VERSION >= 3004
 807 #define WARN_UNUSED_RESULT __attribute__ ((__warn_unused_result__))
 808 #else
 809 #define WARN_UNUSED_RESULT
 810 #endif
 811
 812 /* Use gcc_unreachable() to mark unreachable locations (like an
 813    unreachable default case of a switch.  Do not use gcc_assert(0).  */
 814 #if (GCC_VERSION >= 4005) && !ENABLE_ASSERT_CHECKING
 815 #define gcc_unreachable() __builtin_unreachable ()
 816 #else
 817 #define gcc_unreachable() (fancy_abort (__FILE__, __LINE__, __FUNCTION__))
 818 #endif
 819
 820 #if GCC_VERSION >= 7000 && defined(__has_attribute)
 821 # if __has_attribute(fallthrough)
 822 #  define gcc_fallthrough() __attribute__((fallthrough))
 823 # else
 824 #  define gcc_fallthrough()
 825 # endif
 826 #else
 827 # define gcc_fallthrough()
 828 #endif
 829
 830 #if GCC_VERSION >= 3001
 831 #define STATIC_CONSTANT_P(X) (__builtin_constant_p (X) && (X))
 832 #else
 833 #define STATIC_CONSTANT_P(X) (false && (X))
 834 #endif
 835
 836 /* static_assert (COND, MESSAGE) is available in C++11 onwards.  */
 837 #if __cplusplus >= 201103L
 838 #define STATIC_ASSERT(X) \
 839   static_assert ((X), #X)
 840 #else
 841 #define STATIC_ASSERT(X) \
 842   typedef int assertion1[(X) ? 1 : -1] ATTRIBUTE_UNUSED
 843 #endif
 844
 845 /* Provide a fake boolean type.  We make no attempt to use the
 846    C99 _Bool, as it may not be available in the bootstrap compiler,
 847    and even if it is, it is liable to be buggy.
 848    This must be after all inclusion of system headers, as some of
 849    them will mess us up.  */
 850
 851 #undef TRUE
 852 #undef FALSE
 853
 854 #ifdef __cplusplus
 855   /* Obsolete.  */
 856 # define TRUE true
 857 # define FALSE false
 858 #else /* !__cplusplus */
 859 # undef bool
 860 # undef true
 861 # undef false
 862
 863 # define bool unsigned char
 864 # define true 1
 865 # define false 0
 866
 867   /* Obsolete.  */
 868 # define TRUE true
 869 # define FALSE false
 870 #endif /* !__cplusplus */
 871
 872 /* Some compilers do not allow the use of unsigned char in bitfields.  */
 873 #define BOOL_BITFIELD unsigned int
 874
 875 /* GCC older than 4.4 have broken C++ value initialization handling, see
 876    PR11309, PR30111, PR33916, PR82939 and PR84405 for more details.  */
 877 #if GCC_VERSION > 0 && GCC_VERSION < 4004 && !defined(__clang__)
 878 # define BROKEN_VALUE_INITIALIZATION
 879 #endif
 880
 881 /* As the last action in this file, we poison the identifiers that
 882    shouldn't be used.  Note, luckily gcc-3.0's token-based integrated
 883    preprocessor won't trip on poisoned identifiers that arrive from
 884    the expansion of macros.  E.g. #define strrchr rindex, won't error
 885    if rindex is poisoned after this directive is issued and later on
 886    strrchr is called.
 887
 888    Note: We define bypass macros for the few cases where we really
 889    want to use the libc memory allocation routines.  Otherwise we
 890    insist you use the "x" versions from libiberty.  */
 891
 892 #define really_call_malloc malloc
 893 #define really_call_calloc calloc
 894 #define really_call_realloc realloc
 895
 896 #if defined(FLEX_SCANNER) || defined(YYBISON) || defined(YYBYACC)
 897 /* Flex and bison use malloc and realloc.  Yuk.  Note that this means
 898    really_call_* cannot be used in a .l or .y file.  */
 899 #define malloc xmalloc
 900 #define realloc xrealloc
 901 #endif
 902
 903 #if (GCC_VERSION >= 3000)
 904
 905 /* Note autoconf checks for prototype declarations and includes
 906    system.h while doing so.  Only poison these tokens if actually
 907    compiling gcc, so that the autoconf declaration tests for malloc
 908    etc don't spuriously fail.  */
 909 #ifdef IN_GCC
 910
 911 #undef calloc
 912 #undef strdup
 913 #undef strndup
 914  #pragma GCC poison calloc strdup strndup
 915
 916 #if !defined(FLEX_SCANNER) && !defined(YYBISON)
 917 #undef malloc
 918 #undef realloc
 919  #pragma GCC poison malloc realloc
 920 #endif
 921
 922 /* The %m format should be used when GCC's main diagnostic functions
 923    supporting %m are available, and xstrerror from libiberty
 924    otherwise.  */
 925 #undef strerror
 926  #pragma GCC poison strerror
 927
 928 /* loc_t is defined on some systems and too inviting for some
 929    programmers to avoid.  */
 930 #undef loc_t
 931  #pragma GCC poison loc_t
 932
 933 /* Old target macros that have moved to the target hooks structure.  */
 934  #pragma GCC poison ASM_OPEN_PAREN ASM_CLOSE_PAREN                      \
 935         FUNCTION_PROLOGUE FUNCTION_EPILOGUE                             \
 936         FUNCTION_END_PROLOGUE FUNCTION_BEGIN_EPILOGUE                   \
 937         DECL_MACHINE_ATTRIBUTES COMP_TYPE_ATTRIBUTES INSERT_ATTRIBUTES  \
 938         VALID_MACHINE_DECL_ATTRIBUTE VALID_MACHINE_TYPE_ATTRIBUTE       \
 939         SET_DEFAULT_TYPE_ATTRIBUTES SET_DEFAULT_DECL_ATTRIBUTES         \
 940         MERGE_MACHINE_TYPE_ATTRIBUTES MERGE_MACHINE_DECL_ATTRIBUTES     \
 941         MD_INIT_BUILTINS MD_EXPAND_BUILTIN ASM_OUTPUT_CONSTRUCTOR       \
 942         ASM_OUTPUT_DESTRUCTOR SIGNED_CHAR_SPEC MAX_CHAR_TYPE_SIZE       \
 943         WCHAR_UNSIGNED UNIQUE_SECTION SELECT_SECTION SELECT_RTX_SECTION \
 944         ENCODE_SECTION_INFO STRIP_NAME_ENCODING ASM_GLOBALIZE_LABEL     \
 945         ASM_OUTPUT_MI_THUNK CONST_COSTS RTX_COSTS DEFAULT_RTX_COSTS     \
 946         ADDRESS_COST MACHINE_DEPENDENT_REORG ASM_FILE_START ASM_FILE_END \
 947         ASM_SIMPLIFY_DWARF_ADDR INIT_TARGET_OPTABS INIT_SUBTARGET_OPTABS \
 948         INIT_GOFAST_OPTABS MULSI3_LIBCALL MULDI3_LIBCALL DIVSI3_LIBCALL \
 949         DIVDI3_LIBCALL UDIVSI3_LIBCALL UDIVDI3_LIBCALL MODSI3_LIBCALL   \
 950         MODDI3_LIBCALL UMODSI3_LIBCALL UMODDI3_LIBCALL BUILD_VA_LIST_TYPE \
 951         PRETEND_OUTGOING_VARARGS_NAMED STRUCT_VALUE_INCOMING_REGNUM     \
 952         ASM_OUTPUT_SECTION_NAME PROMOTE_FUNCTION_ARGS PROMOTE_FUNCTION_MODE \
 953         STRUCT_VALUE_INCOMING STRICT_ARGUMENT_NAMING                    \
 954         PROMOTE_FUNCTION_RETURN PROMOTE_PROTOTYPES STRUCT_VALUE_REGNUM  \
 955         SETUP_INCOMING_VARARGS EXPAND_BUILTIN_SAVEREGS                  \
 956         DEFAULT_SHORT_ENUMS SPLIT_COMPLEX_ARGS MD_ASM_CLOBBERS          \
 957         HANDLE_PRAGMA_REDEFINE_EXTNAME HANDLE_PRAGMA_EXTERN_PREFIX      \
 958         MUST_PASS_IN_STACK FUNCTION_ARG_PASS_BY_REFERENCE               \
 959         VECTOR_MODE_SUPPORTED_P TARGET_SUPPORTS_HIDDEN                  \
 960         FUNCTION_ARG_PARTIAL_NREGS ASM_OUTPUT_DWARF_DTPREL              \
 961         ALLOCATE_INITIAL_VALUE LEGITIMIZE_ADDRESS FRAME_POINTER_REQUIRED \
 962         CAN_ELIMINATE TRAMPOLINE_TEMPLATE INITIALIZE_TRAMPOLINE         \
 963         TRAMPOLINE_ADJUST_ADDRESS STATIC_CHAIN STATIC_CHAIN_INCOMING    \
 964         RETURN_POPS_ARGS UNITS_PER_SIMD_WORD OVERRIDE_OPTIONS           \
 965         OPTIMIZATION_OPTIONS CLASS_LIKELY_SPILLED_P                     \
 966         USING_SJLJ_EXCEPTIONS TARGET_UNWIND_INFO                        \
 967         CAN_DEBUG_WITHOUT_FP UNLIKELY_EXECUTED_TEXT_SECTION_NAME        \
 968         HOT_TEXT_SECTION_NAME LEGITIMATE_CONSTANT_P ALWAYS_STRIP_DOTDOT \
 969         OUTPUT_ADDR_CONST_EXTRA SMALL_REGISTER_CLASSES ASM_OUTPUT_IDENT \
 970         ASM_BYTE_OP MEMBER_TYPE_FORCES_BLK LIBGCC2_HAS_SF_MODE          \
 971         LIBGCC2_HAS_DF_MODE LIBGCC2_HAS_XF_MODE LIBGCC2_HAS_TF_MODE     \
 972         CLEAR_BY_PIECES_P MOVE_BY_PIECES_P SET_BY_PIECES_P              \
 973         STORE_BY_PIECES_P TARGET_FLT_EVAL_METHOD                        \
 974         HARD_REGNO_CALL_PART_CLOBBERED HARD_REGNO_MODE_OK               \
 975         MODES_TIEABLE_P FUNCTION_ARG_PADDING SLOW_UNALIGNED_ACCESS      \
 976         HARD_REGNO_NREGS SECONDARY_MEMORY_NEEDED_MODE                   \
 977         SECONDARY_MEMORY_NEEDED CANNOT_CHANGE_MODE_CLASS                \
 978         TRULY_NOOP_TRUNCATION FUNCTION_ARG_OFFSET CONSTANT_ALIGNMENT    \
 979         STARTING_FRAME_OFFSET
 980
 981 /* Target macros only used for code built for the target, that have
 982    moved to libgcc-tm.h or have never been present elsewhere.  */
 983  #pragma GCC poison DECLARE_LIBRARY_RENAMES LIBGCC2_GNU_PREFIX          \
 984         MD_UNWIND_SUPPORT MD_FROB_UPDATE_CONTEXT ENABLE_EXECUTE_STACK   \
 985         REG_VALUE_IN_UNWIND_CONTEXT ASSUME_EXTENDED_UNWIND_CONTEXT
 986
 987 /* Other obsolete target macros, or macros that used to be in target
 988    headers and were not used, and may be obsolete or may never have
 989    been used.  */
 990  #pragma GCC poison INT_ASM_OP ASM_OUTPUT_EH_REGION_BEG CPP_PREDEFINES     \
 991         ASM_OUTPUT_EH_REGION_END ASM_OUTPUT_LABELREF_AS_INT SMALL_STACK    \
 992         DOESNT_NEED_UNWINDER EH_TABLE_LOOKUP OBJC_SELECTORS_WITHOUT_LABELS \
 993         OMIT_EH_TABLE EASY_DIV_EXPR IMPLICIT_FIX_EXPR                      \
 994         LONGJMP_RESTORE_FROM_STACK MAX_INT_TYPE_SIZE ASM_IDENTIFY_GCC      \
 995         STDC_VALUE TRAMPOLINE_ALIGN ASM_IDENTIFY_GCC_AFTER_SOURCE          \
 996         SLOW_ZERO_EXTEND SUBREG_REGNO_OFFSET DWARF_LINE_MIN_INSTR_LENGTH   \
 997         TRADITIONAL_RETURN_FLOAT NO_BUILTIN_SIZE_TYPE                      \
 998         NO_BUILTIN_PTRDIFF_TYPE NO_BUILTIN_WCHAR_TYPE NO_BUILTIN_WINT_TYPE \
 999         BLOCK_PROFILER BLOCK_PROFILER_CODE FUNCTION_BLOCK_PROFILER         \
1000         FUNCTION_BLOCK_PROFILER_EXIT MACHINE_STATE_SAVE                    \
1001         MACHINE_STATE_RESTORE SCCS_DIRECTIVE SECTION_ASM_OP BYTEORDER      \
1002         ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL HOST_WORDS_BIG_ENDIAN    \
1003         OBJC_PROLOGUE ALLOCATE_TRAMPOLINE HANDLE_PRAGMA ROUND_TYPE_SIZE    \
1004         ROUND_TYPE_SIZE_UNIT CONST_SECTION_ASM_OP CRT_GET_RFIB_TEXT        \
1005         DBX_LBRAC_FIRST DBX_OUTPUT_ENUM DBX_OUTPUT_SOURCE_FILENAME         \
1006         DBX_WORKING_DIRECTORY INSN_CACHE_DEPTH INSN_CACHE_SIZE             \
1007         INSN_CACHE_LINE_WIDTH INIT_SECTION_PREAMBLE NEED_ATEXIT ON_EXIT    \
1008         EXIT_BODY OBJECT_FORMAT_ROSE MULTIBYTE_CHARS MAP_CHARACTER         \
1009         LIBGCC_NEEDS_DOUBLE FINAL_PRESCAN_LABEL DEFAULT_CALLER_SAVES       \
1010         LOAD_ARGS_REVERSED MAX_INTEGER_COMPUTATION_MODE                    \
1011         CONVERT_HARD_REGISTER_TO_SSA_P ASM_OUTPUT_MAIN_SOURCE_FILENAME     \
1012         FIRST_INSN_ADDRESS TEXT_SECTION SHARED_BSS_SECTION_ASM_OP          \
1013         PROMOTED_MODE EXPAND_BUILTIN_VA_END                                \
1014         LINKER_DOES_NOT_WORK_WITH_DWARF2 FUNCTION_ARG_KEEP_AS_REFERENCE    \
1015         GIV_SORT_CRITERION MAX_LONG_TYPE_SIZE MAX_LONG_DOUBLE_TYPE_SIZE    \
1016         MAX_WCHAR_TYPE_SIZE SHARED_SECTION_ASM_OP INTEGRATE_THRESHOLD      \
1017         FINAL_REG_PARM_STACK_SPACE MAYBE_REG_PARM_STACK_SPACE              \
1018         TRADITIONAL_PIPELINE_INTERFACE DFA_PIPELINE_INTERFACE              \
1019         DBX_OUTPUT_STANDARD_TYPES BUILTIN_SETJMP_FRAME_VALUE               \
1020         SUNOS4_SHARED_LIBRARIES PROMOTE_FOR_CALL_ONLY                      \
1021         SPACE_AFTER_L_OPTION NO_RECURSIVE_FUNCTION_CSE                     \
1022         DEFAULT_MAIN_RETURN TARGET_MEM_FUNCTIONS EXPAND_BUILTIN_VA_ARG     \
1023         COLLECT_PARSE_FLAG DWARF2_GENERATE_TEXT_SECTION_LABEL WINNING_GDB  \
1024         ASM_OUTPUT_FILENAME ASM_OUTPUT_SOURCE_LINE FILE_NAME_JOINER        \
1025         GDB_INV_REF_REGPARM_STABS_LETTER DBX_MEMPARM_STABS_LETTER          \
1026         PUT_SDB_SRC_FILE STABS_GCC_MARKER DBX_OUTPUT_FUNCTION_END          \
1027         DBX_OUTPUT_GCC_MARKER DBX_FINISH_SYMBOL SDB_GENERATE_FAKE          \
1028         NON_SAVING_SETJMP TARGET_LATE_RTL_PROLOGUE_EPILOGUE                \
1029         CASE_DROPS_THROUGH TARGET_BELL TARGET_BS TARGET_CR TARGET_DIGIT0   \
1030         TARGET_ESC TARGET_FF TARGET_NEWLINE TARGET_TAB TARGET_VT           \
1031         LINK_LIBGCC_SPECIAL DONT_ACCESS_GBLS_AFTER_EPILOGUE                \
1032         TARGET_OPTIONS TARGET_SWITCHES EXTRA_CC_MODES FINALIZE_PIC         \
1033         PREDICATE_CODES SPECIAL_MODE_PREDICATES UNALIGNED_WORD_ASM_OP      \
1034         EXTRA_SECTIONS EXTRA_SECTION_FUNCTIONS READONLY_DATA_SECTION       \
1035         TARGET_ASM_EXCEPTION_SECTION TARGET_ASM_EH_FRAME_SECTION           \
1036         SMALL_ARG_MAX ASM_OUTPUT_SHARED_BSS ASM_OUTPUT_SHARED_COMMON       \
1037         ASM_OUTPUT_SHARED_LOCAL ASM_MAKE_LABEL_LINKONCE                    \
1038         STACK_CHECK_PROBE_INTERVAL STACK_CHECK_PROBE_LOAD                  \
1039         ORDER_REGS_FOR_LOCAL_ALLOC FUNCTION_OUTGOING_VALUE                 \
1040         ASM_DECLARE_CONSTANT_NAME MODIFY_TARGET_NAME SWITCHES_NEED_SPACES  \
1041         SWITCH_CURTAILS_COMPILATION SWITCH_TAKES_ARG WORD_SWITCH_TAKES_ARG \
1042         TARGET_OPTION_TRANSLATE_TABLE HANDLE_PRAGMA_PACK_PUSH_POP          \
1043         HANDLE_SYSV_PRAGMA HANDLE_PRAGMA_WEAK CONDITIONAL_REGISTER_USAGE   \
1044         FUNCTION_ARG_BOUNDARY MUST_USE_SJLJ_EXCEPTIONS US_SOFTWARE_GOFAST  \
1045         USING_SVR4_H SVR4_ASM_SPEC FUNCTION_ARG FUNCTION_ARG_ADVANCE       \
1046         FUNCTION_INCOMING_ARG IRA_COVER_CLASSES TARGET_VERSION             \
1047         MACHINE_TYPE TARGET_HAS_TARGETCM ASM_OUTPUT_BSS                    \
1048         SETJMP_VIA_SAVE_AREA FORBIDDEN_INC_DEC_CLASSES                     \
1049         PREFERRED_OUTPUT_RELOAD_CLASS SYSTEM_INCLUDE_DIR                   \
1050         STANDARD_INCLUDE_DIR STANDARD_INCLUDE_COMPONENT                    \
1051         LINK_ELIMINATE_DUPLICATE_LDIRECTORIES MIPS_DEBUGGING_INFO          \
1052         IDENT_ASM_OP ALL_COP_ADDITIONAL_REGISTER_NAMES DBX_OUTPUT_LBRAC    \
1053         DBX_OUTPUT_NFUN DBX_OUTPUT_RBRAC RANGE_TEST_NON_SHORT_CIRCUIT      \
1054         REAL_VALUE_TRUNCATE REVERSE_CONDEXEC_PREDICATES_P                  \
1055         TARGET_ALIGN_ANON_BITFIELDS TARGET_NARROW_VOLATILE_BITFIELDS       \
1056         IDENT_ASM_OP UNALIGNED_SHORT_ASM_OP UNALIGNED_INT_ASM_OP           \
1057         UNALIGNED_LONG_ASM_OP UNALIGNED_DOUBLE_INT_ASM_OP                  \
1058         USE_COMMON_FOR_ONE_ONLY IFCVT_EXTRA_FIELDS IFCVT_INIT_EXTRA_FIELDS \
1059         CASE_USE_BIT_TESTS FIXUNS_TRUNC_LIKE_FIX_TRUNC                     \
1060         GO_IF_MODE_DEPENDENT_ADDRESS DELAY_SLOTS_FOR_EPILOGUE              \
1061         ELIGIBLE_FOR_EPILOGUE_DELAY TARGET_C99_FUNCTIONS TARGET_HAS_SINCOS \
1062         REG_CLASS_FROM_LETTER CONST_OK_FOR_LETTER_P                        \
1063         CONST_DOUBLE_OK_FOR_LETTER_P EXTRA_CONSTRAINT                      \
1064         REG_CLASS_FROM_CONSTRAINT REG_CLASS_FOR_CONSTRAINT                 \
1065         EXTRA_CONSTRAINT_STR EXTRA_MEMORY_CONSTRAINT                       \
1066         EXTRA_ADDRESS_CONSTRAINT CONST_DOUBLE_OK_FOR_CONSTRAINT_P          \
1067         CALLER_SAVE_PROFITABLE LARGEST_EXPONENT_IS_NORMAL                  \
1068         ROUND_TOWARDS_ZERO SF_SIZE DF_SIZE XF_SIZE TF_SIZE LIBGCC2_TF_CEXT \
1069         LIBGCC2_LONG_DOUBLE_TYPE_SIZE STRUCT_VALUE                         \
1070         EH_FRAME_IN_DATA_SECTION TARGET_FLT_EVAL_METHOD_NON_DEFAULT        \
1071         JCR_SECTION_NAME TARGET_USE_JCR_SECTION SDB_DEBUGGING_INFO         \
1072         SDB_DEBUG NO_IMPLICIT_EXTERN_C NOTICE_UPDATE_CC                    \
1073         CC_STATUS_MDEP_INIT CC_STATUS_MDEP CC_STATUS
1074
1075 /* Hooks that are no longer used.  */
1076  #pragma GCC poison LANG_HOOKS_FUNCTION_MARK LANG_HOOKS_FUNCTION_FREE   \
1077         LANG_HOOKS_MARK_TREE LANG_HOOKS_INSERT_DEFAULT_ATTRIBUTES \
1078         LANG_HOOKS_TREE_INLINING_ESTIMATE_NUM_INSNS \
1079         LANG_HOOKS_PUSHLEVEL LANG_HOOKS_SET_BLOCK \
1080         LANG_HOOKS_MAYBE_BUILD_CLEANUP LANG_HOOKS_UPDATE_DECL_AFTER_SAVING \
1081         LANG_HOOKS_POPLEVEL LANG_HOOKS_TRUTHVALUE_CONVERSION \
1082         TARGET_PROMOTE_FUNCTION_ARGS TARGET_PROMOTE_FUNCTION_RETURN \
1083         LANG_HOOKS_MISSING_ARGUMENT LANG_HOOKS_HASH_TYPES \
1084         TARGET_HANDLE_OFAST TARGET_OPTION_OPTIMIZATION \
1085         TARGET_IRA_COVER_CLASSES TARGET_HELP \
1086         TARGET_HANDLE_PRAGMA_EXTERN_PREFIX \
1087         TARGET_VECTORIZE_BUILTIN_MUL_WIDEN_EVEN \
1088         TARGET_VECTORIZE_BUILTIN_MUL_WIDEN_ODD \
1089         TARGET_MD_ASM_CLOBBERS TARGET_RELAXED_ORDERING \
1090         EXTENDED_SDB_BASIC_TYPES TARGET_INVALID_PARAMETER_TYPE \
1091         TARGET_INVALID_RETURN_TYPE
1092
1093 /* Arrays that were deleted in favor of a functional interface.  */
1094  #pragma GCC poison built_in_decls implicit_built_in_decls
1095
1096 /* Hooks into libgcc2.  */
1097  #pragma GCC poison LIBGCC2_DOUBLE_TYPE_SIZE LIBGCC2_WORDS_BIG_ENDIAN \
1098    LIBGCC2_FLOAT_WORDS_BIG_ENDIAN
1099
1100 /* Miscellaneous macros that are no longer used.  */
1101  #pragma GCC poison USE_MAPPED_LOCATION GET_ENVIRONMENT
1102
1103 /* Libiberty macros that are no longer used in GCC.  */
1104 #undef ANSI_PROTOTYPES
1105 #undef PTR_CONST
1106 #undef LONG_DOUBLE
1107 #undef VPARAMS
1108 #undef VA_OPEN
1109 #undef VA_FIXEDARG
1110 #undef VA_CLOSE
1111 #undef VA_START
1112  #pragma GCC poison ANSI_PROTOTYPES PTR_CONST LONG_DOUBLE VPARAMS VA_OPEN \
1113   VA_FIXEDARG VA_CLOSE VA_START
1114 #endif /* IN_GCC */
1115
1116 /* Front ends should never have to include middle-end headers.  Enforce
1117    this by poisoning the header double-include protection defines.  */
1118 #ifdef IN_GCC_FRONTEND
1119 #pragma GCC poison GCC_RTL_H GCC_EXCEPT_H GCC_EXPR_H
1120 #endif
1121
1122 /* Note: not all uses of the `index' token (e.g. variable names and
1123    structure members) have been eliminated.  */
1124 #undef bcopy
1125 #undef bzero
1126 #undef bcmp
1127 #undef rindex
1128  #pragma GCC poison bcopy bzero bcmp rindex
1129
1130 /* Poison ENABLE_CHECKING macro that should be replaced with
1131    'if (flag_checking)', or with CHECKING_P macro.  */
1132 #pragma GCC poison ENABLE_CHECKING
1133
1134 #endif /* GCC >= 3.0 */
1135
1136 /* This macro allows casting away const-ness to pass -Wcast-qual
1137    warnings.  DO NOT USE THIS UNLESS YOU REALLY HAVE TO!  It should
1138    only be used in certain specific cases.  One valid case is where
1139    the C standard definitions or prototypes force you to.  E.g. if you
1140    need to free a const object, or if you pass a const string to
1141    execv, et al.  Another valid use would be in an allocation function
1142    that creates const objects that need to be initialized.  In some
1143    cases we have non-const functions that return the argument
1144    (e.g. next_nonnote_insn).  Rather than create const shadow
1145    functions, we can cast away const-ness in calling these interfaces
1146    if we're careful to verify that the called function does indeed not
1147    modify its argument and the return value is only used in a const
1148    context.  (This can be somewhat dangerous as these assumptions can
1149    change after the fact).  Beyond these uses, most other cases of
1150    using this macro should be viewed with extreme caution.  */
1151
1152 #ifdef __cplusplus
1153 #define CONST_CAST2(TOTYPE,FROMTYPE,X) (const_cast<TOTYPE> (X))
1154 #else
1155 #if defined(__GNUC__) && GCC_VERSION > 4000
1156 /* GCC 4.0.x has a bug where it may ICE on this expression,
1157    so does GCC 3.4.x (PR17436).  */
1158 #define CONST_CAST2(TOTYPE,FROMTYPE,X) ((__extension__(union {FROMTYPE _q; TOTYPE _nq;})(X))._nq)
1159 #elif defined(__GNUC__)
1160 static inline char *
1161 helper_const_non_const_cast (const char *p)
1162 {
1163   union {
1164     const char *const_c;
1165     char *c;
1166   } val;
1167   val.const_c = p;
1168   return val.c;
1169 }
1170
1171 #define CONST_CAST2(TOTYPE,FROMTYPE,X) \
1172         ((TOTYPE) helper_const_non_const_cast ((const char *) (FROMTYPE) (X)))
1173 #else
1174 #define CONST_CAST2(TOTYPE,FROMTYPE,X) ((TOTYPE)(FROMTYPE)(X))
1175 #endif
1176 #endif
1177 #define CONST_CAST(TYPE,X) CONST_CAST2 (TYPE, const TYPE, (X))
1178 #define CONST_CAST_TREE(X) CONST_CAST (union tree_node *, (X))
1179 #define CONST_CAST_RTX(X) CONST_CAST (struct rtx_def *, (X))
1180 #define CONST_CAST_RTX_INSN(X) CONST_CAST (struct rtx_insn *, (X))
1181 #define CONST_CAST_BB(X) CONST_CAST (struct basic_block_def *, (X))
1182 #define CONST_CAST_GIMPLE(X) CONST_CAST (gimple *, (X))
1183
1184 /* Activate certain diagnostics as warnings (not errors via the
1185    -Werror flag).  */
1186 #if GCC_VERSION >= 4003
1187 /* If asserts are disabled, activate -Wuninitialized as a warning (not
1188    an error/-Werror).  */
1189 #ifndef ENABLE_ASSERT_CHECKING
1190 #pragma GCC diagnostic warning "-Wuninitialized"
1191 #endif
1192 #endif
1193
1194 #ifdef ENABLE_VALGRIND_ANNOTATIONS
1195 # ifdef HAVE_VALGRIND_MEMCHECK_H
1196 #  include <valgrind/memcheck.h>
1197 # elif defined HAVE_MEMCHECK_H
1198 #  include <memcheck.h>
1199 # else
1200 #  include <valgrind.h>
1201 # endif
1202 /* Compatibility macros to let valgrind 3.1 work.  */
1203 # ifndef VALGRIND_MAKE_MEM_NOACCESS
1204 #  define VALGRIND_MAKE_MEM_NOACCESS VALGRIND_MAKE_NOACCESS
1205 # endif
1206 # ifndef VALGRIND_MAKE_MEM_DEFINED
1207 #  define VALGRIND_MAKE_MEM_DEFINED VALGRIND_MAKE_READABLE
1208 # endif
1209 # ifndef VALGRIND_MAKE_MEM_UNDEFINED
1210 #  define VALGRIND_MAKE_MEM_UNDEFINED VALGRIND_MAKE_WRITABLE
1211 # endif
1212 #else
1213 /* Avoid #ifdef:s when we can help it.  */
1214 #define VALGRIND_DISCARD(x)
1215 #define VALGRIND_MALLOCLIKE_BLOCK(w,x,y,z)
1216 #define VALGRIND_FREELIKE_BLOCK(x,y)
1217 #endif
1218
1219 /* Macros to temporarily ignore some warnings.  */
1220 #if GCC_VERSION >= 6000
1221 #define GCC_DIAGNOSTIC_STRINGIFY(x) #x
1222 #define GCC_DIAGNOSTIC_PUSH_IGNORED(x) \
1223   _Pragma ("GCC diagnostic push") \
1224   _Pragma (GCC_DIAGNOSTIC_STRINGIFY (GCC diagnostic ignored #x))
1225 #define GCC_DIAGNOSTIC_POP _Pragma ("GCC diagnostic pop")
1226 #else
1227 #define GCC_DIAGNOSTIC_PUSH_IGNORED(x)
1228 #define GCC_DIAGNOSTIC_POP
1229 #endif
1230
1231 /* In LTO -fwhole-program build we still want to keep the debug functions available
1232    for debugger.  Mark them as used to prevent removal.  */
1233 #if (GCC_VERSION > 4000)
1234 #define DEBUG_FUNCTION __attribute__ ((__used__))
1235 #define DEBUG_VARIABLE __attribute__ ((__used__))
1236 #else
1237 #define DEBUG_FUNCTION
1238 #define DEBUG_VARIABLE
1239 #endif
1240
1241 /* General macro to extract bit Y of X.  */
1242 #define TEST_BIT(X, Y) (((X) >> (Y)) & 1)
1243
1244 /* Get definitions of HOST_WIDE_INT.  */
1245 #include "hwint.h"
1246
1247 typedef int sort_r_cmp_fn (const void *, const void *, void *);
1248 void qsort_chk (void *, size_t, size_t, sort_r_cmp_fn *, void *);
1249 void gcc_sort_r (void *, size_t, size_t, sort_r_cmp_fn *, void *);
1250 void gcc_qsort (void *, size_t, size_t, int (*)(const void *, const void *));
1251 void gcc_stablesort (void *, size_t, size_t,
1252                      int (*)(const void *, const void *));
1253 void gcc_stablesort_r (void *, size_t, size_t, sort_r_cmp_fn *, void *data);
1254 /* Redirect four-argument qsort calls to gcc_qsort; one-argument invocations
1255    correspond to vec::qsort, and use C qsort internally.  */
1256 #define PP_5th(a1, a2, a3, a4, a5, ...) a5
1257 #undef qsort
1258 #define qsort(...) PP_5th (__VA_ARGS__, gcc_qsort, 3, 2, qsort, 0) (__VA_ARGS__)
1259
1260 #define ONE_K 1024
1261 #define ONE_M (ONE_K * ONE_K)
1262 #define ONE_G (ONE_K * ONE_M)
1263
1264 /* Display a number as an integer multiple of either:
1265    - 1024, if said integer is >= to 10 K (in base 2)
1266    - 1024 * 1024, if said integer is >= 10 M in (base 2)
1267  */
1268 #define SIZE_SCALE(x) (((x) < 10 * ONE_K \
1269                         ? (x) \
1270                         : ((x) < 10 * ONE_M \
1271                            ? (x) / ONE_K \
1272                            : (x) / ONE_M)))
1273
1274 /* For a given integer, display either:
1275    - the character 'k', if the number is higher than 10 K (in base 2)
1276      but strictly lower than 10 M (in base 2)
1277    - the character 'M' if the number is higher than 10 M (in base2)
1278    - the charcter ' ' if the number is strictly lower  than 10 K  */
1279 #define SIZE_LABEL(x) ((x) < 10 * ONE_K ? ' ' : ((x) < 10 * ONE_M ? 'k' : 'M'))
1280
1281 /* Display an integer amount as multiple of 1K or 1M (in base 2).
1282    Display the correct unit (either k, M, or ' ') after the amount, as
1283    well.  */
1284 #define SIZE_AMOUNT(size) (uint64_t)SIZE_SCALE (size), SIZE_LABEL (size)
1285
1286 /* Format string particle for printing a SIZE_AMOUNT with N being the width
1287    of the number.  */
1288 #define PRsa(n) "%" #n PRIu64 "%c"
1289
1290 /* System headers may define NULL to be an integer (e.g. 0L), which cannot be
1291    used safely in certain contexts (e.g. as sentinels).  Redefine NULL to
1292    nullptr in order to make it safer.  Note that this might confuse system
1293    headers, however, by convention they must not be included after this point.
1294 */
1295 #ifdef __cplusplus
1296 #undef NULL
1297 #define NULL nullptr
1298 #endif
1299
1300 /* Return true if STR string starts with PREFIX.  */
1301
1302 static inline bool
1303 startswith (const char *str, const char *prefix)
1304 {
1305   return strncmp (str, prefix, strlen (prefix)) == 0;
1306 }
1307
1308 #endif /* ! GCC_SYSTEM_H */