gcc/system.h

   1 /* Get common system includes and various definitions and declarations based
   2    on autoconf macros.
   3    Copyright (C) 1998-2022 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 <initializer_list>
 243 # include <new>
 244 # include <utility>
 245 # include <type_traits>
 246 #endif
 247
 248 /* Some of glibc's string inlines cause warnings.  Plus we'd rather
 249    rely on (and therefore test) GCC's string builtins.  */
 250 #define __NO_STRING_INLINES
 251
 252 #ifdef STRING_WITH_STRINGS
 253 # include <string.h>
 254 # include <strings.h>
 255 #else
 256 # ifdef HAVE_STRING_H
 257 #  include <string.h>
 258 # else
 259 #  ifdef HAVE_STRINGS_H
 260 #   include <strings.h>
 261 #  endif
 262 # endif
 263 #endif
 264
 265 #ifdef HAVE_STDLIB_H
 266 # include <stdlib.h>
 267 #endif
 268
 269 /* When compiling C++ we need to include <cstdlib> as well as <stdlib.h> so
 270    that it is processed before we poison "malloc"; otherwise, if a source
 271    file uses a standard library header that includes <cstdlib>, we will get
 272    an error about 'using std::malloc'.  */
 273 #ifdef __cplusplus
 274 #include <cstdlib>
 275 #endif
 276
 277 /* Undef vec_free from AIX stdlib.h header which conflicts with vec.h.  */
 278 #undef vec_free
 279
 280 /* If we don't have an overriding definition, set SUCCESS_EXIT_CODE and
 281    FATAL_EXIT_CODE to EXIT_SUCCESS and EXIT_FAILURE respectively,
 282    or 0 and 1 if those macros are not defined.  */
 283 #ifndef SUCCESS_EXIT_CODE
 284 # ifdef EXIT_SUCCESS
 285 #  define SUCCESS_EXIT_CODE EXIT_SUCCESS
 286 # else
 287 #  define SUCCESS_EXIT_CODE 0
 288 # endif
 289 #endif
 290
 291 #ifndef FATAL_EXIT_CODE
 292 # ifdef EXIT_FAILURE
 293 #  define FATAL_EXIT_CODE EXIT_FAILURE
 294 # else
 295 #  define FATAL_EXIT_CODE 1
 296 # endif
 297 #endif
 298
 299 #define ICE_EXIT_CODE 4
 300
 301 #ifdef HAVE_UNISTD_H
 302 # include <unistd.h>
 303 #endif
 304
 305 #ifdef HAVE_SYS_PARAM_H
 306 # include <sys/param.h>
 307 /* We use these identifiers later and they appear in some vendor param.h's.  */
 308 # undef PREFETCH
 309 # undef m_slot
 310 #endif
 311
 312 #if HAVE_LIMITS_H
 313 # include <limits.h>
 314 #endif
 315
 316 /* A macro to determine whether a VALUE lies inclusively within a
 317    certain range without evaluating the VALUE more than once.  This
 318    macro won't warn if the VALUE is unsigned and the LOWER bound is
 319    zero, as it would e.g. with "VALUE >= 0 && ...".  Note the LOWER
 320    bound *is* evaluated twice, and LOWER must not be greater than
 321    UPPER.  However the bounds themselves can be either positive or
 322    negative.  */
 323 #define IN_RANGE(VALUE, LOWER, UPPER) \
 324   ((unsigned HOST_WIDE_INT) (VALUE) - (unsigned HOST_WIDE_INT) (LOWER) \
 325    <= (unsigned HOST_WIDE_INT) (UPPER) - (unsigned HOST_WIDE_INT) (LOWER))
 326
 327 /* Infrastructure for defining missing _MAX and _MIN macros.  Note that
 328    macros defined with these cannot be used in #if.  */
 329
 330 /* The extra casts work around common compiler bugs.  */
 331 #define INTTYPE_SIGNED(t) (! ((t) 0 < (t) -1))
 332 /* The outer cast is needed to work around a bug in Cray C 5.0.3.0.
 333    It is necessary at least when t == time_t.  */
 334 #define INTTYPE_MINIMUM(t) ((t) (INTTYPE_SIGNED (t) \
 335                             ? (t) 1 << (sizeof (t) * CHAR_BIT - 1) : (t) 0))
 336 #define INTTYPE_MAXIMUM(t) ((t) (~ (t) 0 - INTTYPE_MINIMUM (t)))
 337
 338 /* Use that infrastructure to provide a few constants.  */
 339 #ifndef UCHAR_MAX
 340 # define UCHAR_MAX INTTYPE_MAXIMUM (unsigned char)
 341 #endif
 342
 343 #ifdef TIME_WITH_SYS_TIME
 344 # include <sys/time.h>
 345 # include <time.h>
 346 #else
 347 # if HAVE_SYS_TIME_H
 348 #  include <sys/time.h>
 349 # else
 350 #  ifdef HAVE_TIME_H
 351 #   include <time.h>
 352 #  endif
 353 # endif
 354 #endif
 355
 356 #ifdef HAVE_FCNTL_H
 357 # include <fcntl.h>
 358 #else
 359 # ifdef HAVE_SYS_FILE_H
 360 #  include <sys/file.h>
 361 # endif
 362 #endif
 363
 364 #ifdef HAVE_SYS_LOCKING_H
 365 # include <sys/locking.h>
 366 #endif
 367
 368 #ifndef SEEK_SET
 369 # define SEEK_SET 0
 370 # define SEEK_CUR 1
 371 # define SEEK_END 2
 372 #endif
 373 #ifndef F_OK
 374 # define F_OK 0
 375 # define X_OK 1
 376 # define W_OK 2
 377 # define R_OK 4
 378 #endif
 379 #ifndef O_RDONLY
 380 # define O_RDONLY 0
 381 #endif
 382 #ifndef O_WRONLY
 383 # define O_WRONLY 1
 384 #endif
 385 #ifndef O_BINARY
 386 # define O_BINARY 0
 387 #endif
 388
 389 /* Some systems define these in, e.g., param.h.  We undefine these names
 390    here to avoid the warnings.  We prefer to use our definitions since we
 391    know they are correct.  */
 392
 393 #undef MIN
 394 #undef MAX
 395 #define MIN(X,Y) ((X) < (Y) ? (X) : (Y))
 396 #define MAX(X,Y) ((X) > (Y) ? (X) : (Y))
 397
 398 /* Returns the least number N such that N * Y >= X.  */
 399 #define CEIL(x,y) (((x) + (y) - 1) / (y))
 400
 401 /* This macro rounds x up to the y boundary.  */
 402 #define ROUND_UP(x,y) (((x) + (y) - 1) & ~((y) - 1))
 403
 404 /* This macro rounds x down to the y boundary.  */
 405 #define ROUND_DOWN(x,y) ((x) & ~((y) - 1))
 406
 407 #ifdef HAVE_SYS_WAIT_H
 408 #include <sys/wait.h>
 409 #endif
 410
 411 #ifndef WIFSIGNALED
 412 #define WIFSIGNALED(S) (((S) & 0xff) != 0 && ((S) & 0xff) != 0x7f)
 413 #endif
 414 #ifndef WTERMSIG
 415 #define WTERMSIG(S) ((S) & 0x7f)
 416 #endif
 417 #ifndef WIFEXITED
 418 #define WIFEXITED(S) (((S) & 0xff) == 0)
 419 #endif
 420 #ifndef WEXITSTATUS
 421 #define WEXITSTATUS(S) (((S) & 0xff00) >> 8)
 422 #endif
 423 #ifndef WSTOPSIG
 424 #define WSTOPSIG WEXITSTATUS
 425 #endif
 426 #ifndef WCOREDUMP
 427 #define WCOREDUMP(S) ((S) & WCOREFLG)
 428 #endif
 429 #ifndef WCOREFLG
 430 #define WCOREFLG 0200
 431 #endif
 432
 433 #include <signal.h>
 434 #if !defined (SIGCHLD) && defined (SIGCLD)
 435 # define SIGCHLD SIGCLD
 436 #endif
 437
 438 #ifdef HAVE_SYS_MMAN_H
 439 # include <sys/mman.h>
 440 #endif
 441
 442 #ifndef MAP_FAILED
 443 # define MAP_FAILED ((void *)-1)
 444 #endif
 445
 446 #if !defined (MAP_ANONYMOUS) && defined (MAP_ANON)
 447 # define MAP_ANONYMOUS MAP_ANON
 448 #endif
 449
 450 #ifdef HAVE_SYS_RESOURCE_H
 451 # include <sys/resource.h>
 452 #endif
 453
 454 #ifdef HAVE_SYS_TIMES_H
 455 # include <sys/times.h>
 456 #endif
 457
 458 /* The HAVE_DECL_* macros are three-state, undefined, 0 or 1.  If they
 459    are defined to 0 then we must provide the relevant declaration
 460    here.  These checks will be in the undefined state while configure
 461    is running so be careful to test "defined (HAVE_DECL_*)".  */
 462
 463 #ifdef __cplusplus
 464 extern "C" {
 465 #endif
 466
 467 #if defined (HAVE_DECL_ATOF) && !HAVE_DECL_ATOF
 468 extern double atof (const char *);
 469 #endif
 470
 471 #if defined (HAVE_DECL_ATOL) && !HAVE_DECL_ATOL
 472 extern long atol (const char *);
 473 #endif
 474
 475 #if defined (HAVE_DECL_FREE) && !HAVE_DECL_FREE
 476 extern void free (void *);
 477 #endif
 478
 479 #if defined (HAVE_DECL_GETCWD) && !HAVE_DECL_GETCWD
 480 extern char *getcwd (char *, size_t);
 481 #endif
 482
 483 #if defined (HAVE_DECL_GETENV) && !HAVE_DECL_GETENV
 484 extern char *getenv (const char *);
 485 #endif
 486
 487 #if defined (HAVE_DECL_GETOPT) && !HAVE_DECL_GETOPT
 488 extern int getopt (int, char * const *, const char *);
 489 #endif
 490
 491 #if defined (HAVE_DECL_GETPAGESIZE) && !HAVE_DECL_GETPAGESIZE
 492 extern int getpagesize (void);
 493 #endif
 494
 495 #if defined (HAVE_DECL_GETWD) && !HAVE_DECL_GETWD
 496 extern char *getwd (char *);
 497 #endif
 498
 499 #if defined (HAVE_DECL_SBRK) && !HAVE_DECL_SBRK
 500 extern void *sbrk (int);
 501 #endif
 502
 503 #if defined (HAVE_DECL_SETENV) && !HAVE_DECL_SETENV
 504 int setenv(const char *, const char *, int);
 505 #endif
 506
 507 #if defined (HAVE_DECL_STRSTR) && !HAVE_DECL_STRSTR
 508 extern char *strstr (const char *, const char *);
 509 #endif
 510
 511 #if defined (HAVE_DECL_STPCPY) && !HAVE_DECL_STPCPY
 512 extern char *stpcpy (char *, const char *);
 513 #endif
 514
 515 #if defined (HAVE_DECL_UNSETENV) && !HAVE_DECL_UNSETENV
 516 int unsetenv(const char *);
 517 #endif
 518
 519 #if defined (HAVE_DECL_MALLOC) && !HAVE_DECL_MALLOC
 520 extern void *malloc (size_t);
 521 #endif
 522
 523 #if defined (HAVE_DECL_CALLOC) && !HAVE_DECL_CALLOC
 524 extern void *calloc (size_t, size_t);
 525 #endif
 526
 527 #if defined (HAVE_DECL_REALLOC) && !HAVE_DECL_REALLOC
 528 extern void *realloc (void *, size_t);
 529 #endif
 530
 531 #ifdef __cplusplus
 532 }
 533 #endif
 534
 535 #ifdef HAVE_STDINT_H
 536 #include <stdint.h>
 537 #endif
 538
 539 #ifdef HAVE_INTTYPES_H
 540 #include <inttypes.h>
 541 #endif
 542
 543 #ifndef SIZE_MAX
 544 # define SIZE_MAX INTTYPE_MAXIMUM (size_t)
 545 #endif
 546
 547 #ifdef __cplusplus
 548 extern "C" {
 549 #endif
 550
 551 /* If the system doesn't provide strsignal, we get it defined in
 552    libiberty but no declaration is supplied.  */
 553 #if !defined (HAVE_STRSIGNAL) \
 554     || (defined (HAVE_DECL_STRSIGNAL) && !HAVE_DECL_STRSIGNAL)
 555 # ifndef strsignal
 556 extern const char *strsignal (int);
 557 # endif
 558 #endif
 559
 560 #ifdef HAVE_GETRLIMIT
 561 # if defined (HAVE_DECL_GETRLIMIT) && !HAVE_DECL_GETRLIMIT
 562 #  ifndef getrlimit
 563 struct rlimit;
 564 extern int getrlimit (int, struct rlimit *);
 565 #  endif
 566 # endif
 567 #endif
 568
 569 #ifdef HAVE_SETRLIMIT
 570 # if defined (HAVE_DECL_SETRLIMIT) && !HAVE_DECL_SETRLIMIT
 571 #  ifndef setrlimit
 572 struct rlimit;
 573 extern int setrlimit (int, const struct rlimit *);
 574 #  endif
 575 # endif
 576 #endif
 577
 578 #if defined (HAVE_DECL_ABORT) && !HAVE_DECL_ABORT
 579 extern void abort (void);
 580 #endif
 581
 582 #if defined (HAVE_DECL_SNPRINTF) && !HAVE_DECL_SNPRINTF
 583 extern int snprintf (char *, size_t, const char *, ...);
 584 #endif
 585
 586 #if defined (HAVE_DECL_VSNPRINTF) && !HAVE_DECL_VSNPRINTF
 587 extern int vsnprintf (char *, size_t, const char *, va_list);
 588 #endif
 589
 590 #ifdef __cplusplus
 591 }
 592 #endif
 593
 594 /* 1 if we have C99 designated initializers.  */
 595 #if !defined(HAVE_DESIGNATED_INITIALIZERS)
 596 #ifdef __cplusplus
 597 #define HAVE_DESIGNATED_INITIALIZERS 0
 598 #else
 599 #define HAVE_DESIGNATED_INITIALIZERS \
 600   ((GCC_VERSION >= 2007) || (__STDC_VERSION__ >= 199901L))
 601 #endif
 602 #endif
 603
 604 #if !defined(HAVE_DESIGNATED_UNION_INITIALIZERS)
 605 #ifdef __cplusplus
 606 #define HAVE_DESIGNATED_UNION_INITIALIZERS (GCC_VERSION >= 4007)
 607 #else
 608 #define HAVE_DESIGNATED_UNION_INITIALIZERS \
 609   ((GCC_VERSION >= 2007) || (__STDC_VERSION__ >= 199901L))
 610 #endif
 611 #endif
 612
 613 #if HAVE_SYS_STAT_H
 614 # include <sys/stat.h>
 615 #endif
 616
 617 /* Test if something is a normal file.  */
 618 #ifndef S_ISREG
 619 #define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
 620 #endif
 621
 622 /* Test if something is a directory.  */
 623 #ifndef S_ISDIR
 624 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
 625 #endif
 626
 627 /* Test if something is a character special file.  */
 628 #ifndef S_ISCHR
 629 #define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR)
 630 #endif
 631
 632 /* Test if something is a block special file.  */
 633 #ifndef S_ISBLK
 634 #define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK)
 635 #endif
 636
 637 /* Test if something is a socket.  */
 638 #ifndef S_ISSOCK
 639 # ifdef S_IFSOCK
 640 #   define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK)
 641 # else
 642 #   define S_ISSOCK(m) 0
 643 # endif
 644 #endif
 645
 646 /* Test if something is a FIFO.  */
 647 #ifndef S_ISFIFO
 648 # ifdef S_IFIFO
 649 #  define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO)
 650 # else
 651 #  define S_ISFIFO(m) 0
 652 # endif
 653 #endif
 654
 655 /* Define well known filenos if the system does not define them.  */
 656 #ifndef STDIN_FILENO
 657 # define STDIN_FILENO   0
 658 #endif
 659 #ifndef STDOUT_FILENO
 660 # define STDOUT_FILENO  1
 661 #endif
 662 #ifndef STDERR_FILENO
 663 # define STDERR_FILENO  2
 664 #endif
 665
 666 /* Some systems have mkdir that takes a single argument.  */
 667 #ifdef MKDIR_TAKES_ONE_ARG
 668 # define mkdir(a,b) mkdir (a)
 669 #endif
 670
 671 #ifndef HAVE_KILL
 672 # define kill(p,s) raise (s)
 673 #endif
 674
 675 /* Provide a way to print an address via printf.  */
 676 #ifndef HOST_PTR_PRINTF
 677 #define HOST_PTR_PRINTF "%p"
 678 #endif /* ! HOST_PTR_PRINTF */
 679
 680 /* By default, colon separates directories in a path.  */
 681 #ifndef PATH_SEPARATOR
 682 #define PATH_SEPARATOR ':'
 683 #endif
 684
 685 /* Filename handling macros.  */
 686 #include "filenames.h"
 687
 688 /* These should be phased out in favor of IS_DIR_SEPARATOR, where possible.  */
 689 #ifndef DIR_SEPARATOR
 690 # define DIR_SEPARATOR '/'
 691 # ifdef HAVE_DOS_BASED_FILE_SYSTEM
 692 #  define DIR_SEPARATOR_2 '\\'
 693 # endif
 694 #endif
 695
 696 #if defined (ENABLE_PLUGIN) && defined (HAVE_DLFCN_H)
 697 /* If plugin support is enabled, we could use libdl.  */
 698 #include <dlfcn.h>
 699 #endif
 700
 701 /* Do not introduce a gmp.h dependency on the build system.  */
 702 #ifndef GENERATOR_FILE
 703 #include <gmp.h>
 704 #endif
 705
 706 /* Get libiberty declarations.  */
 707 #include "libiberty.h"
 708
 709 #undef FFS  /* Some systems predefine this symbol; don't let it interfere.  */
 710 #undef FLOAT /* Likewise.  */
 711 #undef ABS /* Likewise.  */
 712 #undef PC /* Likewise.  */
 713
 714 /* Provide a default for the HOST_BIT_BUCKET.
 715    This suffices for POSIX-like hosts.  */
 716
 717 #ifndef HOST_BIT_BUCKET
 718 #define HOST_BIT_BUCKET "/dev/null"
 719 #endif
 720
 721 #ifndef offsetof
 722 #define offsetof(TYPE, MEMBER)  ((size_t) &((TYPE *) 0)->MEMBER)
 723 #endif
 724
 725 /* Various error reporting routines want to use __FUNCTION__.  */
 726 #if (GCC_VERSION < 2007)
 727 #ifndef __FUNCTION__
 728 #define __FUNCTION__ "?"
 729 #endif /* ! __FUNCTION__ */
 730 #endif
 731
 732 /* __builtin_expect(A, B) evaluates to A, but notifies the compiler that
 733    the most likely value of A is B.  This feature was added at some point
 734    between 2.95 and 3.0.  Let's use 3.0 as the lower bound for now.  */
 735 #if (GCC_VERSION < 3000)
 736 #define __builtin_expect(a, b) (a)
 737 #endif
 738
 739 #define LIKELY(x) (__builtin_expect ((x), 1))
 740 #define UNLIKELY(x) (__builtin_expect ((x), 0))
 741
 742 /* Some of the headers included by <memory> can use "abort" within a
 743    namespace, e.g. "_VSTD::abort();", which fails after we use the
 744    preprocessor to redefine "abort" as "fancy_abort" below.  */
 745
 746 #ifdef INCLUDE_MEMORY
 747 # include <memory>
 748 #endif
 749
 750 #ifdef INCLUDE_MALLOC_H
 751 #if defined(HAVE_MALLINFO) || defined(HAVE_MALLINFO2)
 752 #include <malloc.h>
 753 #endif
 754 #endif
 755
 756 #ifdef INCLUDE_PTHREAD_H
 757 #include <pthread.h>
 758 #endif
 759
 760 #ifdef INCLUDE_ISL
 761 #ifdef HAVE_isl
 762 #include <isl/options.h>
 763 #include <isl/ctx.h>
 764 #include <isl/val.h>
 765 #include <isl/set.h>
 766 #include <isl/union_set.h>
 767 #include <isl/map.h>
 768 #include <isl/union_map.h>
 769 #include <isl/aff.h>
 770 #include <isl/constraint.h>
 771 #include <isl/flow.h>
 772 #include <isl/ilp.h>
 773 #include <isl/schedule.h>
 774 #include <isl/ast_build.h>
 775 #include <isl/schedule_node.h>
 776 #include <isl/id.h>
 777 #include <isl/space.h>
 778 #endif
 779 #endif
 780
 781 /* Redefine 'abort' to report an internal error w/o coredump, and
 782    reporting the location of the error in the source file.
 783    Instead of directly calling 'abort' or 'fancy_abort', GCC code
 784    should normally call 'internal_error' with a specific message.  */
 785 extern void fancy_abort (const char *, int, const char *)
 786                                          ATTRIBUTE_NORETURN ATTRIBUTE_COLD;
 787 #define abort() fancy_abort (__FILE__, __LINE__, __FUNCTION__)
 788
 789 /* Use gcc_assert(EXPR) to test invariants.  */
 790 #if ENABLE_ASSERT_CHECKING
 791 #define gcc_assert(EXPR)                                                \
 792    ((void)(!(EXPR) ? fancy_abort (__FILE__, __LINE__, __FUNCTION__), 0 : 0))
 793 #elif (GCC_VERSION >= 4005)
 794 #define gcc_assert(EXPR)                                                \
 795   ((void)(UNLIKELY (!(EXPR)) ? __builtin_unreachable (), 0 : 0))
 796 #else
 797 /* Include EXPR, so that unused variable warnings do not occur.  */
 798 #define gcc_assert(EXPR) ((void)(0 && (EXPR)))
 799 #endif
 800
 801 #if CHECKING_P
 802 #define gcc_checking_assert(EXPR) gcc_assert (EXPR)
 803 #else
 804 /* N.B.: in release build EXPR is not evaluated.  */
 805 #define gcc_checking_assert(EXPR) ((void)(0 && (EXPR)))
 806 #endif
 807
 808 #if GCC_VERSION >= 4000
 809 #define ALWAYS_INLINE inline __attribute__ ((always_inline))
 810 #else
 811 #define ALWAYS_INLINE inline
 812 #endif
 813
 814 #if GCC_VERSION >= 3004
 815 #define WARN_UNUSED_RESULT __attribute__ ((__warn_unused_result__))
 816 #else
 817 #define WARN_UNUSED_RESULT
 818 #endif
 819
 820 /* Use gcc_unreachable() to mark unreachable locations (like an
 821    unreachable default case of a switch.  Do not use gcc_assert(0).  */
 822 #if (GCC_VERSION >= 4005) && !ENABLE_ASSERT_CHECKING
 823 #define gcc_unreachable() __builtin_unreachable ()
 824 #else
 825 #define gcc_unreachable() (fancy_abort (__FILE__, __LINE__, __FUNCTION__))
 826 #endif
 827
 828 #if GCC_VERSION >= 7000 && defined(__has_attribute)
 829 # if __has_attribute(fallthrough)
 830 #  define gcc_fallthrough() __attribute__((fallthrough))
 831 # else
 832 #  define gcc_fallthrough()
 833 # endif
 834 #else
 835 # define gcc_fallthrough()
 836 #endif
 837
 838 #if GCC_VERSION >= 3001
 839 #define STATIC_CONSTANT_P(X) (__builtin_constant_p (X) && (X))
 840 #else
 841 #define STATIC_CONSTANT_P(X) (false && (X))
 842 #endif
 843
 844 #ifdef __cplusplus
 845 #define STATIC_ASSERT(X) \
 846   static_assert ((X), #X)
 847 #else
 848 #define STATIC_ASSERT(X) \
 849   typedef int assertion1[(X) ? 1 : -1] ATTRIBUTE_UNUSED
 850 #endif
 851
 852 /* Provide a fake boolean type.  We make no attempt to use the
 853    C99 _Bool, as it may not be available in the bootstrap compiler,
 854    and even if it is, it is liable to be buggy.
 855    This must be after all inclusion of system headers, as some of
 856    them will mess us up.  */
 857
 858 #undef TRUE
 859 #undef FALSE
 860
 861 #ifdef __cplusplus
 862   /* Obsolete.  */
 863 # define TRUE true
 864 # define FALSE false
 865 #else /* !__cplusplus */
 866 # undef bool
 867 # undef true
 868 # undef false
 869
 870 # define bool unsigned char
 871 # define true 1
 872 # define false 0
 873
 874   /* Obsolete.  */
 875 # define TRUE true
 876 # define FALSE false
 877 #endif /* !__cplusplus */
 878
 879 /* Some compilers do not allow the use of unsigned char in bitfields.  */
 880 #define BOOL_BITFIELD unsigned int
 881
 882 /* GCC older than 4.4 have broken C++ value initialization handling, see
 883    PR11309, PR30111, PR33916, PR82939 and PR84405 for more details.  */
 884 #if GCC_VERSION > 0 && GCC_VERSION < 4004 && !defined(__clang__)
 885 # define BROKEN_VALUE_INITIALIZATION
 886 #endif
 887
 888 /* As the last action in this file, we poison the identifiers that
 889    shouldn't be used.  Note, luckily gcc-3.0's token-based integrated
 890    preprocessor won't trip on poisoned identifiers that arrive from
 891    the expansion of macros.  E.g. #define strrchr rindex, won't error
 892    if rindex is poisoned after this directive is issued and later on
 893    strrchr is called.
 894
 895    Note: We define bypass macros for the few cases where we really
 896    want to use the libc memory allocation routines.  Otherwise we
 897    insist you use the "x" versions from libiberty.  */
 898
 899 #define really_call_malloc malloc
 900 #define really_call_calloc calloc
 901 #define really_call_realloc realloc
 902
 903 #if defined(FLEX_SCANNER) || defined(YYBISON) || defined(YYBYACC)
 904 /* Flex and bison use malloc and realloc.  Yuk.  Note that this means
 905    really_call_* cannot be used in a .l or .y file.  */
 906 #define malloc xmalloc
 907 #define realloc xrealloc
 908 #endif
 909
 910 #if (GCC_VERSION >= 3000)
 911
 912 /* Note autoconf checks for prototype declarations and includes
 913    system.h while doing so.  Only poison these tokens if actually
 914    compiling gcc, so that the autoconf declaration tests for malloc
 915    etc don't spuriously fail.  */
 916 #ifdef IN_GCC
 917
 918 #undef calloc
 919 #undef strdup
 920 #undef strndup
 921  #pragma GCC poison calloc strdup strndup
 922
 923 #if !defined(FLEX_SCANNER) && !defined(YYBISON)
 924 #undef malloc
 925 #undef realloc
 926  #pragma GCC poison malloc realloc
 927 #endif
 928
 929 /* The %m format should be used when GCC's main diagnostic functions
 930    supporting %m are available, and xstrerror from libiberty
 931    otherwise.  */
 932 #undef strerror
 933  #pragma GCC poison strerror
 934
 935 /* loc_t is defined on some systems and too inviting for some
 936    programmers to avoid.  */
 937 #undef loc_t
 938  #pragma GCC poison loc_t
 939
 940 /* Old target macros that have moved to the target hooks structure.  */
 941  #pragma GCC poison ASM_OPEN_PAREN ASM_CLOSE_PAREN                      \
 942         FUNCTION_PROLOGUE FUNCTION_EPILOGUE                             \
 943         FUNCTION_END_PROLOGUE FUNCTION_BEGIN_EPILOGUE                   \
 944         DECL_MACHINE_ATTRIBUTES COMP_TYPE_ATTRIBUTES INSERT_ATTRIBUTES  \
 945         VALID_MACHINE_DECL_ATTRIBUTE VALID_MACHINE_TYPE_ATTRIBUTE       \
 946         SET_DEFAULT_TYPE_ATTRIBUTES SET_DEFAULT_DECL_ATTRIBUTES         \
 947         MERGE_MACHINE_TYPE_ATTRIBUTES MERGE_MACHINE_DECL_ATTRIBUTES     \
 948         MD_INIT_BUILTINS MD_EXPAND_BUILTIN ASM_OUTPUT_CONSTRUCTOR       \
 949         ASM_OUTPUT_DESTRUCTOR SIGNED_CHAR_SPEC MAX_CHAR_TYPE_SIZE       \
 950         WCHAR_UNSIGNED UNIQUE_SECTION SELECT_SECTION SELECT_RTX_SECTION \
 951         ENCODE_SECTION_INFO STRIP_NAME_ENCODING ASM_GLOBALIZE_LABEL     \
 952         ASM_OUTPUT_MI_THUNK CONST_COSTS RTX_COSTS DEFAULT_RTX_COSTS     \
 953         ADDRESS_COST MACHINE_DEPENDENT_REORG ASM_FILE_START ASM_FILE_END \
 954         ASM_SIMPLIFY_DWARF_ADDR INIT_TARGET_OPTABS INIT_SUBTARGET_OPTABS \
 955         INIT_GOFAST_OPTABS MULSI3_LIBCALL MULDI3_LIBCALL DIVSI3_LIBCALL \
 956         DIVDI3_LIBCALL UDIVSI3_LIBCALL UDIVDI3_LIBCALL MODSI3_LIBCALL   \
 957         MODDI3_LIBCALL UMODSI3_LIBCALL UMODDI3_LIBCALL BUILD_VA_LIST_TYPE \
 958         PRETEND_OUTGOING_VARARGS_NAMED STRUCT_VALUE_INCOMING_REGNUM     \
 959         ASM_OUTPUT_SECTION_NAME PROMOTE_FUNCTION_ARGS PROMOTE_FUNCTION_MODE \
 960         STRUCT_VALUE_INCOMING STRICT_ARGUMENT_NAMING                    \
 961         PROMOTE_FUNCTION_RETURN PROMOTE_PROTOTYPES STRUCT_VALUE_REGNUM  \
 962         SETUP_INCOMING_VARARGS EXPAND_BUILTIN_SAVEREGS                  \
 963         DEFAULT_SHORT_ENUMS SPLIT_COMPLEX_ARGS MD_ASM_CLOBBERS          \
 964         HANDLE_PRAGMA_REDEFINE_EXTNAME HANDLE_PRAGMA_EXTERN_PREFIX      \
 965         MUST_PASS_IN_STACK FUNCTION_ARG_PASS_BY_REFERENCE               \
 966         VECTOR_MODE_SUPPORTED_P TARGET_SUPPORTS_HIDDEN                  \
 967         FUNCTION_ARG_PARTIAL_NREGS ASM_OUTPUT_DWARF_DTPREL              \
 968         ALLOCATE_INITIAL_VALUE LEGITIMIZE_ADDRESS FRAME_POINTER_REQUIRED \
 969         CAN_ELIMINATE TRAMPOLINE_TEMPLATE INITIALIZE_TRAMPOLINE         \
 970         TRAMPOLINE_ADJUST_ADDRESS STATIC_CHAIN STATIC_CHAIN_INCOMING    \
 971         RETURN_POPS_ARGS UNITS_PER_SIMD_WORD OVERRIDE_OPTIONS           \
 972         OPTIMIZATION_OPTIONS CLASS_LIKELY_SPILLED_P                     \
 973         USING_SJLJ_EXCEPTIONS TARGET_UNWIND_INFO                        \
 974         CAN_DEBUG_WITHOUT_FP UNLIKELY_EXECUTED_TEXT_SECTION_NAME        \
 975         HOT_TEXT_SECTION_NAME LEGITIMATE_CONSTANT_P ALWAYS_STRIP_DOTDOT \
 976         OUTPUT_ADDR_CONST_EXTRA SMALL_REGISTER_CLASSES ASM_OUTPUT_IDENT \
 977         ASM_BYTE_OP MEMBER_TYPE_FORCES_BLK LIBGCC2_HAS_SF_MODE          \
 978         LIBGCC2_HAS_DF_MODE LIBGCC2_HAS_XF_MODE LIBGCC2_HAS_TF_MODE     \
 979         CLEAR_BY_PIECES_P MOVE_BY_PIECES_P SET_BY_PIECES_P              \
 980         STORE_BY_PIECES_P TARGET_FLT_EVAL_METHOD                        \
 981         HARD_REGNO_CALL_PART_CLOBBERED HARD_REGNO_MODE_OK               \
 982         MODES_TIEABLE_P FUNCTION_ARG_PADDING SLOW_UNALIGNED_ACCESS      \
 983         HARD_REGNO_NREGS SECONDARY_MEMORY_NEEDED_MODE                   \
 984         SECONDARY_MEMORY_NEEDED CANNOT_CHANGE_MODE_CLASS                \
 985         TRULY_NOOP_TRUNCATION FUNCTION_ARG_OFFSET CONSTANT_ALIGNMENT    \
 986         STARTING_FRAME_OFFSET
 987
 988 /* Target macros only used for code built for the target, that have
 989    moved to libgcc-tm.h or have never been present elsewhere.  */
 990  #pragma GCC poison DECLARE_LIBRARY_RENAMES LIBGCC2_GNU_PREFIX          \
 991         MD_UNWIND_SUPPORT MD_FROB_UPDATE_CONTEXT ENABLE_EXECUTE_STACK   \
 992         REG_VALUE_IN_UNWIND_CONTEXT ASSUME_EXTENDED_UNWIND_CONTEXT
 993
 994 /* Other obsolete target macros, or macros that used to be in target
 995    headers and were not used, and may be obsolete or may never have
 996    been used.  */
 997  #pragma GCC poison INT_ASM_OP ASM_OUTPUT_EH_REGION_BEG CPP_PREDEFINES     \
 998         ASM_OUTPUT_EH_REGION_END ASM_OUTPUT_LABELREF_AS_INT SMALL_STACK    \
 999         DOESNT_NEED_UNWINDER EH_TABLE_LOOKUP OBJC_SELECTORS_WITHOUT_LABELS \
1000         OMIT_EH_TABLE EASY_DIV_EXPR IMPLICIT_FIX_EXPR                      \
1001         LONGJMP_RESTORE_FROM_STACK MAX_INT_TYPE_SIZE ASM_IDENTIFY_GCC      \
1002         STDC_VALUE TRAMPOLINE_ALIGN ASM_IDENTIFY_GCC_AFTER_SOURCE          \
1003         SLOW_ZERO_EXTEND SUBREG_REGNO_OFFSET DWARF_LINE_MIN_INSTR_LENGTH   \
1004         TRADITIONAL_RETURN_FLOAT NO_BUILTIN_SIZE_TYPE                      \
1005         NO_BUILTIN_PTRDIFF_TYPE NO_BUILTIN_WCHAR_TYPE NO_BUILTIN_WINT_TYPE \
1006         BLOCK_PROFILER BLOCK_PROFILER_CODE FUNCTION_BLOCK_PROFILER         \
1007         FUNCTION_BLOCK_PROFILER_EXIT MACHINE_STATE_SAVE                    \
1008         MACHINE_STATE_RESTORE SCCS_DIRECTIVE SECTION_ASM_OP BYTEORDER      \
1009         ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL HOST_WORDS_BIG_ENDIAN    \
1010         OBJC_PROLOGUE ALLOCATE_TRAMPOLINE HANDLE_PRAGMA ROUND_TYPE_SIZE    \
1011         ROUND_TYPE_SIZE_UNIT CONST_SECTION_ASM_OP CRT_GET_RFIB_TEXT        \
1012         INSN_CACHE_DEPTH INSN_CACHE_SIZE                                   \
1013         INSN_CACHE_LINE_WIDTH INIT_SECTION_PREAMBLE NEED_ATEXIT ON_EXIT    \
1014         EXIT_BODY OBJECT_FORMAT_ROSE MULTIBYTE_CHARS MAP_CHARACTER         \
1015         LIBGCC_NEEDS_DOUBLE FINAL_PRESCAN_LABEL DEFAULT_CALLER_SAVES       \
1016         LOAD_ARGS_REVERSED MAX_INTEGER_COMPUTATION_MODE                    \
1017         CONVERT_HARD_REGISTER_TO_SSA_P ASM_OUTPUT_MAIN_SOURCE_FILENAME     \
1018         FIRST_INSN_ADDRESS TEXT_SECTION SHARED_BSS_SECTION_ASM_OP          \
1019         PROMOTED_MODE EXPAND_BUILTIN_VA_END                                \
1020         LINKER_DOES_NOT_WORK_WITH_DWARF2 FUNCTION_ARG_KEEP_AS_REFERENCE    \
1021         GIV_SORT_CRITERION MAX_LONG_TYPE_SIZE MAX_LONG_DOUBLE_TYPE_SIZE    \
1022         MAX_WCHAR_TYPE_SIZE SHARED_SECTION_ASM_OP INTEGRATE_THRESHOLD      \
1023         FINAL_REG_PARM_STACK_SPACE MAYBE_REG_PARM_STACK_SPACE              \
1024         TRADITIONAL_PIPELINE_INTERFACE DFA_PIPELINE_INTERFACE              \
1025         BUILTIN_SETJMP_FRAME_VALUE                                         \
1026         SUNOS4_SHARED_LIBRARIES PROMOTE_FOR_CALL_ONLY                      \
1027         SPACE_AFTER_L_OPTION NO_RECURSIVE_FUNCTION_CSE                     \
1028         DEFAULT_MAIN_RETURN TARGET_MEM_FUNCTIONS EXPAND_BUILTIN_VA_ARG     \
1029         COLLECT_PARSE_FLAG DWARF2_GENERATE_TEXT_SECTION_LABEL WINNING_GDB  \
1030         ASM_OUTPUT_FILENAME ASM_OUTPUT_SOURCE_LINE FILE_NAME_JOINER        \
1031         GDB_INV_REF_REGPARM_STABS_LETTER                                   \
1032         PUT_SDB_SRC_FILE STABS_GCC_MARKER SDB_GENERATE_FAKE                \
1033         NON_SAVING_SETJMP TARGET_LATE_RTL_PROLOGUE_EPILOGUE                \
1034         CASE_DROPS_THROUGH TARGET_BELL TARGET_BS TARGET_CR TARGET_DIGIT0   \
1035         TARGET_ESC TARGET_FF TARGET_NEWLINE TARGET_TAB TARGET_VT           \
1036         LINK_LIBGCC_SPECIAL DONT_ACCESS_GBLS_AFTER_EPILOGUE                \
1037         TARGET_OPTIONS TARGET_SWITCHES EXTRA_CC_MODES FINALIZE_PIC         \
1038         PREDICATE_CODES SPECIAL_MODE_PREDICATES UNALIGNED_WORD_ASM_OP      \
1039         EXTRA_SECTIONS EXTRA_SECTION_FUNCTIONS READONLY_DATA_SECTION       \
1040         TARGET_ASM_EXCEPTION_SECTION TARGET_ASM_EH_FRAME_SECTION           \
1041         SMALL_ARG_MAX ASM_OUTPUT_SHARED_BSS ASM_OUTPUT_SHARED_COMMON       \
1042         ASM_OUTPUT_SHARED_LOCAL ASM_MAKE_LABEL_LINKONCE                    \
1043         STACK_CHECK_PROBE_INTERVAL STACK_CHECK_PROBE_LOAD                  \
1044         ORDER_REGS_FOR_LOCAL_ALLOC FUNCTION_OUTGOING_VALUE                 \
1045         ASM_DECLARE_CONSTANT_NAME MODIFY_TARGET_NAME SWITCHES_NEED_SPACES  \
1046         SWITCH_CURTAILS_COMPILATION SWITCH_TAKES_ARG WORD_SWITCH_TAKES_ARG \
1047         TARGET_OPTION_TRANSLATE_TABLE HANDLE_PRAGMA_PACK_PUSH_POP          \
1048         HANDLE_SYSV_PRAGMA HANDLE_PRAGMA_WEAK CONDITIONAL_REGISTER_USAGE   \
1049         FUNCTION_ARG_BOUNDARY MUST_USE_SJLJ_EXCEPTIONS US_SOFTWARE_GOFAST  \
1050         USING_SVR4_H SVR4_ASM_SPEC FUNCTION_ARG FUNCTION_ARG_ADVANCE       \
1051         FUNCTION_INCOMING_ARG IRA_COVER_CLASSES TARGET_VERSION             \
1052         MACHINE_TYPE TARGET_HAS_TARGETCM ASM_OUTPUT_BSS                    \
1053         SETJMP_VIA_SAVE_AREA FORBIDDEN_INC_DEC_CLASSES                     \
1054         PREFERRED_OUTPUT_RELOAD_CLASS SYSTEM_INCLUDE_DIR                   \
1055         STANDARD_INCLUDE_DIR STANDARD_INCLUDE_COMPONENT                    \
1056         LINK_ELIMINATE_DUPLICATE_LDIRECTORIES MIPS_DEBUGGING_INFO          \
1057         IDENT_ASM_OP ALL_COP_ADDITIONAL_REGISTER_NAMES                     \
1058         RANGE_TEST_NON_SHORT_CIRCUIT                                       \
1059         REAL_VALUE_TRUNCATE REVERSE_CONDEXEC_PREDICATES_P                  \
1060         TARGET_ALIGN_ANON_BITFIELDS TARGET_NARROW_VOLATILE_BITFIELDS       \
1061         IDENT_ASM_OP UNALIGNED_SHORT_ASM_OP UNALIGNED_INT_ASM_OP           \
1062         UNALIGNED_LONG_ASM_OP UNALIGNED_DOUBLE_INT_ASM_OP                  \
1063         USE_COMMON_FOR_ONE_ONLY IFCVT_EXTRA_FIELDS IFCVT_INIT_EXTRA_FIELDS \
1064         CASE_USE_BIT_TESTS FIXUNS_TRUNC_LIKE_FIX_TRUNC                     \
1065         GO_IF_MODE_DEPENDENT_ADDRESS DELAY_SLOTS_FOR_EPILOGUE              \
1066         ELIGIBLE_FOR_EPILOGUE_DELAY TARGET_C99_FUNCTIONS TARGET_HAS_SINCOS \
1067         REG_CLASS_FROM_LETTER CONST_OK_FOR_LETTER_P                        \
1068         CONST_DOUBLE_OK_FOR_LETTER_P EXTRA_CONSTRAINT                      \
1069         REG_CLASS_FROM_CONSTRAINT REG_CLASS_FOR_CONSTRAINT                 \
1070         EXTRA_CONSTRAINT_STR EXTRA_MEMORY_CONSTRAINT                       \
1071         EXTRA_ADDRESS_CONSTRAINT CONST_DOUBLE_OK_FOR_CONSTRAINT_P          \
1072         CALLER_SAVE_PROFITABLE LARGEST_EXPONENT_IS_NORMAL                  \
1073         ROUND_TOWARDS_ZERO SF_SIZE DF_SIZE XF_SIZE TF_SIZE LIBGCC2_TF_CEXT \
1074         LIBGCC2_LONG_DOUBLE_TYPE_SIZE STRUCT_VALUE                         \
1075         EH_FRAME_IN_DATA_SECTION TARGET_FLT_EVAL_METHOD_NON_DEFAULT        \
1076         JCR_SECTION_NAME TARGET_USE_JCR_SECTION SDB_DEBUGGING_INFO         \
1077         SDB_DEBUG NO_IMPLICIT_EXTERN_C NOTICE_UPDATE_CC                    \
1078         CC_STATUS_MDEP_INIT CC_STATUS_MDEP CC_STATUS
1079
1080 /* Hooks that are no longer used.  */
1081  #pragma GCC poison LANG_HOOKS_FUNCTION_MARK LANG_HOOKS_FUNCTION_FREE   \
1082         LANG_HOOKS_MARK_TREE LANG_HOOKS_INSERT_DEFAULT_ATTRIBUTES \
1083         LANG_HOOKS_TREE_INLINING_ESTIMATE_NUM_INSNS \
1084         LANG_HOOKS_PUSHLEVEL LANG_HOOKS_SET_BLOCK \
1085         LANG_HOOKS_MAYBE_BUILD_CLEANUP LANG_HOOKS_UPDATE_DECL_AFTER_SAVING \
1086         LANG_HOOKS_POPLEVEL LANG_HOOKS_TRUTHVALUE_CONVERSION \
1087         TARGET_PROMOTE_FUNCTION_ARGS TARGET_PROMOTE_FUNCTION_RETURN \
1088         LANG_HOOKS_MISSING_ARGUMENT LANG_HOOKS_HASH_TYPES \
1089         TARGET_HANDLE_OFAST TARGET_OPTION_OPTIMIZATION \
1090         TARGET_IRA_COVER_CLASSES TARGET_HELP \
1091         TARGET_HANDLE_PRAGMA_EXTERN_PREFIX \
1092         TARGET_VECTORIZE_BUILTIN_MUL_WIDEN_EVEN \
1093         TARGET_VECTORIZE_BUILTIN_MUL_WIDEN_ODD \
1094         TARGET_MD_ASM_CLOBBERS TARGET_RELAXED_ORDERING \
1095         EXTENDED_SDB_BASIC_TYPES TARGET_INVALID_PARAMETER_TYPE \
1096         TARGET_INVALID_RETURN_TYPE
1097
1098 /* Arrays that were deleted in favor of a functional interface.  */
1099  #pragma GCC poison built_in_decls implicit_built_in_decls
1100
1101 /* Hooks into libgcc2.  */
1102  #pragma GCC poison LIBGCC2_DOUBLE_TYPE_SIZE LIBGCC2_WORDS_BIG_ENDIAN \
1103    LIBGCC2_FLOAT_WORDS_BIG_ENDIAN
1104
1105 /* Miscellaneous macros that are no longer used.  */
1106  #pragma GCC poison USE_MAPPED_LOCATION GET_ENVIRONMENT
1107
1108 /* Libiberty macros that are no longer used in GCC.  */
1109 #undef ANSI_PROTOTYPES
1110 #undef PTR_CONST
1111 #undef LONG_DOUBLE
1112 #undef VPARAMS
1113 #undef VA_OPEN
1114 #undef VA_FIXEDARG
1115 #undef VA_CLOSE
1116 #undef VA_START
1117  #pragma GCC poison ANSI_PROTOTYPES PTR_CONST LONG_DOUBLE VPARAMS VA_OPEN \
1118   VA_FIXEDARG VA_CLOSE VA_START
1119 #endif /* IN_GCC */
1120
1121 /* Front ends should never have to include middle-end headers.  Enforce
1122    this by poisoning the header double-include protection defines.  */
1123 #ifdef IN_GCC_FRONTEND
1124 #pragma GCC poison GCC_RTL_H GCC_EXCEPT_H GCC_EXPR_H
1125 #endif
1126
1127 /* Note: not all uses of the `index' token (e.g. variable names and
1128    structure members) have been eliminated.  */
1129 #undef bcopy
1130 #undef bzero
1131 #undef bcmp
1132 #undef rindex
1133  #pragma GCC poison bcopy bzero bcmp rindex
1134
1135 /* Poison ENABLE_CHECKING macro that should be replaced with
1136    'if (flag_checking)', or with CHECKING_P macro.  */
1137 #pragma GCC poison ENABLE_CHECKING
1138
1139 #endif /* GCC >= 3.0 */
1140
1141 /* This macro allows casting away const-ness to pass -Wcast-qual
1142    warnings.  DO NOT USE THIS UNLESS YOU REALLY HAVE TO!  It should
1143    only be used in certain specific cases.  One valid case is where
1144    the C standard definitions or prototypes force you to.  E.g. if you
1145    need to free a const object, or if you pass a const string to
1146    execv, et al.  Another valid use would be in an allocation function
1147    that creates const objects that need to be initialized.  In some
1148    cases we have non-const functions that return the argument
1149    (e.g. next_nonnote_insn).  Rather than create const shadow
1150    functions, we can cast away const-ness in calling these interfaces
1151    if we're careful to verify that the called function does indeed not
1152    modify its argument and the return value is only used in a const
1153    context.  (This can be somewhat dangerous as these assumptions can
1154    change after the fact).  Beyond these uses, most other cases of
1155    using this macro should be viewed with extreme caution.  */
1156
1157 #ifdef __cplusplus
1158 #define CONST_CAST2(TOTYPE,FROMTYPE,X) (const_cast<TOTYPE> (X))
1159 #else
1160 #if defined(__GNUC__) && GCC_VERSION > 4000
1161 /* GCC 4.0.x has a bug where it may ICE on this expression,
1162    so does GCC 3.4.x (PR17436).  */
1163 #define CONST_CAST2(TOTYPE,FROMTYPE,X) ((__extension__(union {FROMTYPE _q; TOTYPE _nq;})(X))._nq)
1164 #elif defined(__GNUC__)
1165 static inline char *
1166 helper_const_non_const_cast (const char *p)
1167 {
1168   union {
1169     const char *const_c;
1170     char *c;
1171   } val;
1172   val.const_c = p;
1173   return val.c;
1174 }
1175
1176 #define CONST_CAST2(TOTYPE,FROMTYPE,X) \
1177         ((TOTYPE) helper_const_non_const_cast ((const char *) (FROMTYPE) (X)))
1178 #else
1179 #define CONST_CAST2(TOTYPE,FROMTYPE,X) ((TOTYPE)(FROMTYPE)(X))
1180 #endif
1181 #endif
1182 #define CONST_CAST(TYPE,X) CONST_CAST2 (TYPE, const TYPE, (X))
1183 #define CONST_CAST_TREE(X) CONST_CAST (union tree_node *, (X))
1184 #define CONST_CAST_RTX(X) CONST_CAST (struct rtx_def *, (X))
1185 #define CONST_CAST_RTX_INSN(X) CONST_CAST (struct rtx_insn *, (X))
1186 #define CONST_CAST_BB(X) CONST_CAST (struct basic_block_def *, (X))
1187 #define CONST_CAST_GIMPLE(X) CONST_CAST (gimple *, (X))
1188
1189 /* Activate certain diagnostics as warnings (not errors via the
1190    -Werror flag).  */
1191 #if GCC_VERSION >= 4003
1192 /* If asserts are disabled, activate -Wuninitialized as a warning (not
1193    an error/-Werror).  */
1194 #ifndef ENABLE_ASSERT_CHECKING
1195 #pragma GCC diagnostic warning "-Wuninitialized"
1196 #endif
1197 #endif
1198
1199 #ifdef ENABLE_VALGRIND_ANNOTATIONS
1200 # ifdef HAVE_VALGRIND_MEMCHECK_H
1201 #  include <valgrind/memcheck.h>
1202 # elif defined HAVE_MEMCHECK_H
1203 #  include <memcheck.h>
1204 # else
1205 #  include <valgrind.h>
1206 # endif
1207 /* Compatibility macros to let valgrind 3.1 work.  */
1208 # ifndef VALGRIND_MAKE_MEM_NOACCESS
1209 #  define VALGRIND_MAKE_MEM_NOACCESS VALGRIND_MAKE_NOACCESS
1210 # endif
1211 # ifndef VALGRIND_MAKE_MEM_DEFINED
1212 #  define VALGRIND_MAKE_MEM_DEFINED VALGRIND_MAKE_READABLE
1213 # endif
1214 # ifndef VALGRIND_MAKE_MEM_UNDEFINED
1215 #  define VALGRIND_MAKE_MEM_UNDEFINED VALGRIND_MAKE_WRITABLE
1216 # endif
1217 #else
1218 /* Avoid #ifdef:s when we can help it.  */
1219 #define VALGRIND_DISCARD(x)
1220 #define VALGRIND_MALLOCLIKE_BLOCK(w,x,y,z)
1221 #define VALGRIND_FREELIKE_BLOCK(x,y)
1222 #endif
1223
1224 /* Macros to temporarily ignore some warnings.  */
1225 #if GCC_VERSION >= 6000
1226 #define GCC_DIAGNOSTIC_STRINGIFY(x) #x
1227 #define GCC_DIAGNOSTIC_PUSH_IGNORED(x) \
1228   _Pragma ("GCC diagnostic push") \
1229   _Pragma (GCC_DIAGNOSTIC_STRINGIFY (GCC diagnostic ignored #x))
1230 #define GCC_DIAGNOSTIC_POP _Pragma ("GCC diagnostic pop")
1231 #else
1232 #define GCC_DIAGNOSTIC_PUSH_IGNORED(x)
1233 #define GCC_DIAGNOSTIC_POP
1234 #endif
1235
1236 /* In LTO -fwhole-program build we still want to keep the debug functions available
1237    for debugger.  Mark them as used to prevent removal.  */
1238 #if (GCC_VERSION > 4000)
1239 #define DEBUG_FUNCTION __attribute__ ((__used__))
1240 #define DEBUG_VARIABLE __attribute__ ((__used__))
1241 #else
1242 #define DEBUG_FUNCTION
1243 #define DEBUG_VARIABLE
1244 #endif
1245
1246 /* General macro to extract bit Y of X.  */
1247 #define TEST_BIT(X, Y) (((X) >> (Y)) & 1)
1248
1249 /* Get definitions of HOST_WIDE_INT.  */
1250 #include "hwint.h"
1251
1252 typedef int sort_r_cmp_fn (const void *, const void *, void *);
1253 void qsort_chk (void *, size_t, size_t, sort_r_cmp_fn *, void *);
1254 void gcc_sort_r (void *, size_t, size_t, sort_r_cmp_fn *, void *);
1255 void gcc_qsort (void *, size_t, size_t, int (*)(const void *, const void *));
1256 void gcc_stablesort (void *, size_t, size_t,
1257                      int (*)(const void *, const void *));
1258 void gcc_stablesort_r (void *, size_t, size_t, sort_r_cmp_fn *, void *data);
1259 /* Redirect four-argument qsort calls to gcc_qsort; one-argument invocations
1260    correspond to vec::qsort, and use C qsort internally.  */
1261 #define PP_5th(a1, a2, a3, a4, a5, ...) a5
1262 #undef qsort
1263 #define qsort(...) PP_5th (__VA_ARGS__, gcc_qsort, 3, 2, qsort, 0) (__VA_ARGS__)
1264
1265 #define ONE_K 1024
1266 #define ONE_M (ONE_K * ONE_K)
1267 #define ONE_G (ONE_K * ONE_M)
1268
1269 /* Display a number as an integer multiple of either:
1270    - 1024, if said integer is >= to 10 K (in base 2)
1271    - 1024 * 1024, if said integer is >= 10 M in (base 2)
1272  */
1273 #define SIZE_SCALE(x) (((x) < 10 * ONE_K \
1274                         ? (x) \
1275                         : ((x) < 10 * ONE_M \
1276                            ? (x) / ONE_K \
1277                            : (x) / ONE_M)))
1278
1279 /* For a given integer, display either:
1280    - the character 'k', if the number is higher than 10 K (in base 2)
1281      but strictly lower than 10 M (in base 2)
1282    - the character 'M' if the number is higher than 10 M (in base2)
1283    - the charcter ' ' if the number is strictly lower  than 10 K  */
1284 #define SIZE_LABEL(x) ((x) < 10 * ONE_K ? ' ' : ((x) < 10 * ONE_M ? 'k' : 'M'))
1285
1286 /* Display an integer amount as multiple of 1K or 1M (in base 2).
1287    Display the correct unit (either k, M, or ' ') after the amount, as
1288    well.  */
1289 #define SIZE_AMOUNT(size) (uint64_t)SIZE_SCALE (size), SIZE_LABEL (size)
1290
1291 /* Format string particle for printing a SIZE_AMOUNT with N being the width
1292    of the number.  */
1293 #define PRsa(n) "%" #n PRIu64 "%c"
1294
1295 /* System headers may define NULL to be an integer (e.g. 0L), which cannot be
1296    used safely in certain contexts (e.g. as sentinels).  Redefine NULL to
1297    nullptr in order to make it safer.  Note that this might confuse system
1298    headers, however, by convention they must not be included after this point.
1299 */
1300 #ifdef __cplusplus
1301 #undef NULL
1302 #define NULL nullptr
1303 #endif
1304
1305 /* Return true if STR string starts with PREFIX.  */
1306
1307 static inline bool
1308 startswith (const char *str, const char *prefix)
1309 {
1310   return strncmp (str, prefix, strlen (prefix)) == 0;
1311 }
1312
1313 /* Return true if STR string ends with SUFFIX.  */
1314
1315 static inline bool
1316 endswith (const char *str, const char *suffix)
1317 {
1318   size_t str_len = strlen (str);
1319   size_t suffix_len = strlen (suffix);
1320   if (str_len < suffix_len)
1321     return false;
1322
1323   return memcmp (str + str_len - suffix_len, suffix, suffix_len) == 0;
1324 }
1325
1326 #endif /* ! GCC_SYSTEM_H */