lib/stdlib.in.h

   1 /* A GNU-like <stdlib.h>.
   2
   3    Copyright (C) 1995, 2001-2004, 2006-2019 Free Software Foundation, Inc.
   4
   5    This program is free software: you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 3 of the License, or
   8    (at your option) any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  17
  18 #if __GNUC__ >= 3
  19 @PRAGMA_SYSTEM_HEADER@
  20 #endif
  21 @PRAGMA_COLUMNS@
  22
  23 #if defined __need_system_stdlib_h || defined __need_malloc_and_calloc
  24 /* Special invocation conventions inside some gnulib header files,
  25    and inside some glibc header files, respectively.  */
  26
  27 #@INCLUDE_NEXT@ @NEXT_STDLIB_H@
  28
  29 #else
  30 /* Normal invocation convention.  */
  31
  32 #ifndef _@GUARD_PREFIX@_STDLIB_H
  33
  34 /* The include_next requires a split double-inclusion guard.  */
  35 #@INCLUDE_NEXT@ @NEXT_STDLIB_H@
  36
  37 #ifndef _@GUARD_PREFIX@_STDLIB_H
  38 #define _@GUARD_PREFIX@_STDLIB_H
  39
  40 /* NetBSD 5.0 mis-defines NULL.  */
  41 #include <stddef.h>
  42
  43 /* MirBSD 10 defines WEXITSTATUS in <sys/wait.h>, not in <stdlib.h>.  */
  44 #if @GNULIB_SYSTEM_POSIX@ && !defined WEXITSTATUS
  45 # include <sys/wait.h>
  46 #endif
  47
  48 /* Solaris declares getloadavg() in <sys/loadavg.h>.  */
  49 #if (@GNULIB_GETLOADAVG@ || defined GNULIB_POSIXCHECK) && @HAVE_SYS_LOADAVG_H@
  50 /* OpenIndiana has a bug: <sys/time.h> must be included before
  51    <sys/loadavg.h>.  */
  52 # include <sys/time.h>
  53 # include <sys/loadavg.h>
  54 #endif
  55
  56 /* Native Windows platforms declare mktemp() in <io.h>.  */
  57 #if 0 && (defined _WIN32 && ! defined __CYGWIN__)
  58 # include <io.h>
  59 #endif
  60
  61 #if @GNULIB_RANDOM_R@
  62
  63 /* OSF/1 5.1 declares 'struct random_data' in <random.h>, which is included
  64    from <stdlib.h> if _REENTRANT is defined.  Include it whenever we need
  65    'struct random_data'.  */
  66 # if @HAVE_RANDOM_H@
  67 #  include <random.h>
  68 # endif
  69
  70 # if !@HAVE_STRUCT_RANDOM_DATA@ || @REPLACE_RANDOM_R@ || !@HAVE_RANDOM_R@
  71 #  include <stdint.h>
  72 # endif
  73
  74 # if !@HAVE_STRUCT_RANDOM_DATA@
  75 /* Define 'struct random_data'.
  76    But allow multiple gnulib generated <stdlib.h> replacements to coexist.  */
  77 #  if !GNULIB_defined_struct_random_data
  78 struct random_data
  79 {
  80   int32_t *fptr;                /* Front pointer.  */
  81   int32_t *rptr;                /* Rear pointer.  */
  82   int32_t *state;               /* Array of state values.  */
  83   int rand_type;                /* Type of random number generator.  */
  84   int rand_deg;                 /* Degree of random number generator.  */
  85   int rand_sep;                 /* Distance between front and rear.  */
  86   int32_t *end_ptr;             /* Pointer behind state table.  */
  87 };
  88 #   define GNULIB_defined_struct_random_data 1
  89 #  endif
  90 # endif
  91 #endif
  92
  93 #if (@GNULIB_MKSTEMP@ || @GNULIB_MKSTEMPS@ || @GNULIB_MKOSTEMP@ || @GNULIB_MKOSTEMPS@ || @GNULIB_GETSUBOPT@ || defined GNULIB_POSIXCHECK) && ! defined __GLIBC__ && !(defined _WIN32 && ! defined __CYGWIN__)
  94 /* On Mac OS X 10.3, only <unistd.h> declares mkstemp.  */
  95 /* On Mac OS X 10.5, only <unistd.h> declares mkstemps.  */
  96 /* On Mac OS X 10.13, only <unistd.h> declares mkostemp and mkostemps.  */
  97 /* On Cygwin 1.7.1, only <unistd.h> declares getsubopt.  */
  98 /* But avoid namespace pollution on glibc systems and native Windows.  */
  99 # include <unistd.h>
 100 #endif
 101
 102 /* The __attribute__ feature is available in gcc versions 2.5 and later.
 103    The attribute __pure__ was added in gcc 2.96.  */
 104 #if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 96)
 105 # define _GL_ATTRIBUTE_PURE __attribute__ ((__pure__))
 106 #else
 107 # define _GL_ATTRIBUTE_PURE /* empty */
 108 #endif
 109
 110 /* The definition of _Noreturn is copied here.  */
 111
 112 /* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
 113
 114 /* The definition of _GL_ARG_NONNULL is copied here.  */
 115
 116 /* The definition of _GL_WARN_ON_USE is copied here.  */
 117
 118
 119 /* Some systems do not define EXIT_*, despite otherwise supporting C89.  */
 120 #ifndef EXIT_SUCCESS
 121 # define EXIT_SUCCESS 0
 122 #endif
 123 /* Tandem/NSK and other platforms that define EXIT_FAILURE as -1 interfere
 124    with proper operation of xargs.  */
 125 #ifndef EXIT_FAILURE
 126 # define EXIT_FAILURE 1
 127 #elif EXIT_FAILURE != 1
 128 # undef EXIT_FAILURE
 129 # define EXIT_FAILURE 1
 130 #endif
 131
 132
 133 #if @GNULIB__EXIT@
 134 /* Terminate the current process with the given return code, without running
 135    the 'atexit' handlers.  */
 136 # if !@HAVE__EXIT@
 137 _GL_FUNCDECL_SYS (_Exit, _Noreturn void, (int status));
 138 # endif
 139 _GL_CXXALIAS_SYS (_Exit, void, (int status));
 140 _GL_CXXALIASWARN (_Exit);
 141 #elif defined GNULIB_POSIXCHECK
 142 # undef _Exit
 143 # if HAVE_RAW_DECL__EXIT
 144 _GL_WARN_ON_USE (_Exit, "_Exit is unportable - "
 145                  "use gnulib module _Exit for portability");
 146 # endif
 147 #endif
 148
 149
 150 #if @GNULIB_ATOLL@
 151 /* Parse a signed decimal integer.
 152    Returns the value of the integer.  Errors are not detected.  */
 153 # if !@HAVE_ATOLL@
 154 _GL_FUNCDECL_SYS (atoll, long long, (const char *string)
 155                                     _GL_ATTRIBUTE_PURE
 156                                     _GL_ARG_NONNULL ((1)));
 157 # endif
 158 _GL_CXXALIAS_SYS (atoll, long long, (const char *string));
 159 _GL_CXXALIASWARN (atoll);
 160 #elif defined GNULIB_POSIXCHECK
 161 # undef atoll
 162 # if HAVE_RAW_DECL_ATOLL
 163 _GL_WARN_ON_USE (atoll, "atoll is unportable - "
 164                  "use gnulib module atoll for portability");
 165 # endif
 166 #endif
 167
 168 #if @GNULIB_CALLOC_POSIX@
 169 # if @REPLACE_CALLOC@
 170 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 171 #   undef calloc
 172 #   define calloc rpl_calloc
 173 #  endif
 174 _GL_FUNCDECL_RPL (calloc, void *, (size_t nmemb, size_t size));
 175 _GL_CXXALIAS_RPL (calloc, void *, (size_t nmemb, size_t size));
 176 # else
 177 _GL_CXXALIAS_SYS (calloc, void *, (size_t nmemb, size_t size));
 178 # endif
 179 _GL_CXXALIASWARN (calloc);
 180 #elif defined GNULIB_POSIXCHECK
 181 # undef calloc
 182 /* Assume calloc is always declared.  */
 183 _GL_WARN_ON_USE (calloc, "calloc is not POSIX compliant everywhere - "
 184                  "use gnulib module calloc-posix for portability");
 185 #endif
 186
 187 #if @GNULIB_CANONICALIZE_FILE_NAME@
 188 # if @REPLACE_CANONICALIZE_FILE_NAME@
 189 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 190 #   define canonicalize_file_name rpl_canonicalize_file_name
 191 #  endif
 192 _GL_FUNCDECL_RPL (canonicalize_file_name, char *, (const char *name)
 193                                                   _GL_ARG_NONNULL ((1)));
 194 _GL_CXXALIAS_RPL (canonicalize_file_name, char *, (const char *name));
 195 # else
 196 #  if !@HAVE_CANONICALIZE_FILE_NAME@
 197 _GL_FUNCDECL_SYS (canonicalize_file_name, char *, (const char *name)
 198                                                   _GL_ARG_NONNULL ((1)));
 199 #  endif
 200 _GL_CXXALIAS_SYS (canonicalize_file_name, char *, (const char *name));
 201 # endif
 202 _GL_CXXALIASWARN (canonicalize_file_name);
 203 #elif defined GNULIB_POSIXCHECK
 204 # undef canonicalize_file_name
 205 # if HAVE_RAW_DECL_CANONICALIZE_FILE_NAME
 206 _GL_WARN_ON_USE (canonicalize_file_name,
 207                  "canonicalize_file_name is unportable - "
 208                  "use gnulib module canonicalize-lgpl for portability");
 209 # endif
 210 #endif
 211
 212 #if @GNULIB_GETLOADAVG@
 213 /* Store max(NELEM,3) load average numbers in LOADAVG[].
 214    The three numbers are the load average of the last 1 minute, the last 5
 215    minutes, and the last 15 minutes, respectively.
 216    LOADAVG is an array of NELEM numbers.  */
 217 # if !@HAVE_DECL_GETLOADAVG@
 218 _GL_FUNCDECL_SYS (getloadavg, int, (double loadavg[], int nelem)
 219                                    _GL_ARG_NONNULL ((1)));
 220 # endif
 221 _GL_CXXALIAS_SYS (getloadavg, int, (double loadavg[], int nelem));
 222 _GL_CXXALIASWARN (getloadavg);
 223 #elif defined GNULIB_POSIXCHECK
 224 # undef getloadavg
 225 # if HAVE_RAW_DECL_GETLOADAVG
 226 _GL_WARN_ON_USE (getloadavg, "getloadavg is not portable - "
 227                  "use gnulib module getloadavg for portability");
 228 # endif
 229 #endif
 230
 231 #if @GNULIB_GETSUBOPT@
 232 /* Assuming *OPTIONP is a comma separated list of elements of the form
 233    "token" or "token=value", getsubopt parses the first of these elements.
 234    If the first element refers to a "token" that is member of the given
 235    NULL-terminated array of tokens:
 236      - It replaces the comma with a NUL byte, updates *OPTIONP to point past
 237        the first option and the comma, sets *VALUEP to the value of the
 238        element (or NULL if it doesn't contain an "=" sign),
 239      - It returns the index of the "token" in the given array of tokens.
 240    Otherwise it returns -1, and *OPTIONP and *VALUEP are undefined.
 241    For more details see the POSIX:2001 specification.
 242    http://www.opengroup.org/susv3xsh/getsubopt.html */
 243 # if !@HAVE_GETSUBOPT@
 244 _GL_FUNCDECL_SYS (getsubopt, int,
 245                   (char **optionp, char *const *tokens, char **valuep)
 246                   _GL_ARG_NONNULL ((1, 2, 3)));
 247 # endif
 248 _GL_CXXALIAS_SYS (getsubopt, int,
 249                   (char **optionp, char *const *tokens, char **valuep));
 250 _GL_CXXALIASWARN (getsubopt);
 251 #elif defined GNULIB_POSIXCHECK
 252 # undef getsubopt
 253 # if HAVE_RAW_DECL_GETSUBOPT
 254 _GL_WARN_ON_USE (getsubopt, "getsubopt is unportable - "
 255                  "use gnulib module getsubopt for portability");
 256 # endif
 257 #endif
 258
 259 #if @GNULIB_GRANTPT@
 260 /* Change the ownership and access permission of the slave side of the
 261    pseudo-terminal whose master side is specified by FD.  */
 262 # if !@HAVE_GRANTPT@
 263 _GL_FUNCDECL_SYS (grantpt, int, (int fd));
 264 # endif
 265 _GL_CXXALIAS_SYS (grantpt, int, (int fd));
 266 _GL_CXXALIASWARN (grantpt);
 267 #elif defined GNULIB_POSIXCHECK
 268 # undef grantpt
 269 # if HAVE_RAW_DECL_GRANTPT
 270 _GL_WARN_ON_USE (grantpt, "grantpt is not portable - "
 271                  "use gnulib module grantpt for portability");
 272 # endif
 273 #endif
 274
 275 /* If _GL_USE_STDLIB_ALLOC is nonzero, the including module does not
 276    rely on GNU or POSIX semantics for malloc and realloc (for example,
 277    by never specifying a zero size), so it does not need malloc or
 278    realloc to be redefined.  */
 279 #if @GNULIB_MALLOC_POSIX@
 280 # if @REPLACE_MALLOC@
 281 #  if !((defined __cplusplus && defined GNULIB_NAMESPACE) \
 282         || _GL_USE_STDLIB_ALLOC)
 283 #   undef malloc
 284 #   define malloc rpl_malloc
 285 #  endif
 286 _GL_FUNCDECL_RPL (malloc, void *, (size_t size));
 287 _GL_CXXALIAS_RPL (malloc, void *, (size_t size));
 288 # else
 289 _GL_CXXALIAS_SYS (malloc, void *, (size_t size));
 290 # endif
 291 _GL_CXXALIASWARN (malloc);
 292 #elif defined GNULIB_POSIXCHECK && !_GL_USE_STDLIB_ALLOC
 293 # undef malloc
 294 /* Assume malloc is always declared.  */
 295 _GL_WARN_ON_USE (malloc, "malloc is not POSIX compliant everywhere - "
 296                  "use gnulib module malloc-posix for portability");
 297 #endif
 298
 299 /* Convert a multibyte character to a wide character.  */
 300 #if @GNULIB_MBTOWC@
 301 # if @REPLACE_MBTOWC@
 302 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 303 #   undef mbtowc
 304 #   define mbtowc rpl_mbtowc
 305 #  endif
 306 _GL_FUNCDECL_RPL (mbtowc, int, (wchar_t *pwc, const char *s, size_t n));
 307 _GL_CXXALIAS_RPL (mbtowc, int, (wchar_t *pwc, const char *s, size_t n));
 308 # else
 309 #  if !@HAVE_MBTOWC@
 310 _GL_FUNCDECL_SYS (mbtowc, int, (wchar_t *pwc, const char *s, size_t n));
 311 #  endif
 312 _GL_CXXALIAS_SYS (mbtowc, int, (wchar_t *pwc, const char *s, size_t n));
 313 # endif
 314 _GL_CXXALIASWARN (mbtowc);
 315 #elif defined GNULIB_POSIXCHECK
 316 # undef mbtowc
 317 # if HAVE_RAW_DECL_MBTOWC
 318 _GL_WARN_ON_USE (mbtowc, "mbtowc is not portable - "
 319                  "use gnulib module mbtowc for portability");
 320 # endif
 321 #endif
 322
 323 #if @GNULIB_MKDTEMP@
 324 /* Create a unique temporary directory from TEMPLATE.
 325    The last six characters of TEMPLATE must be "XXXXXX";
 326    they are replaced with a string that makes the directory name unique.
 327    Returns TEMPLATE, or a null pointer if it cannot get a unique name.
 328    The directory is created mode 700.  */
 329 # if !@HAVE_MKDTEMP@
 330 _GL_FUNCDECL_SYS (mkdtemp, char *, (char * /*template*/) _GL_ARG_NONNULL ((1)));
 331 # endif
 332 _GL_CXXALIAS_SYS (mkdtemp, char *, (char * /*template*/));
 333 _GL_CXXALIASWARN (mkdtemp);
 334 #elif defined GNULIB_POSIXCHECK
 335 # undef mkdtemp
 336 # if HAVE_RAW_DECL_MKDTEMP
 337 _GL_WARN_ON_USE (mkdtemp, "mkdtemp is unportable - "
 338                  "use gnulib module mkdtemp for portability");
 339 # endif
 340 #endif
 341
 342 #if @GNULIB_MKOSTEMP@
 343 /* Create a unique temporary file from TEMPLATE.
 344    The last six characters of TEMPLATE must be "XXXXXX";
 345    they are replaced with a string that makes the file name unique.
 346    The flags are a bitmask, possibly including O_CLOEXEC (defined in <fcntl.h>)
 347    and O_TEXT, O_BINARY (defined in "binary-io.h").
 348    The file is then created, with the specified flags, ensuring it didn't exist
 349    before.
 350    The file is created read-write (mask at least 0600 & ~umask), but it may be
 351    world-readable and world-writable (mask 0666 & ~umask), depending on the
 352    implementation.
 353    Returns the open file descriptor if successful, otherwise -1 and errno
 354    set.  */
 355 # if !@HAVE_MKOSTEMP@
 356 _GL_FUNCDECL_SYS (mkostemp, int, (char * /*template*/, int /*flags*/)
 357                                  _GL_ARG_NONNULL ((1)));
 358 # endif
 359 _GL_CXXALIAS_SYS (mkostemp, int, (char * /*template*/, int /*flags*/));
 360 _GL_CXXALIASWARN (mkostemp);
 361 #elif defined GNULIB_POSIXCHECK
 362 # undef mkostemp
 363 # if HAVE_RAW_DECL_MKOSTEMP
 364 _GL_WARN_ON_USE (mkostemp, "mkostemp is unportable - "
 365                  "use gnulib module mkostemp for portability");
 366 # endif
 367 #endif
 368
 369 #if @GNULIB_MKOSTEMPS@
 370 /* Create a unique temporary file from TEMPLATE.
 371    The last six characters of TEMPLATE before a suffix of length
 372    SUFFIXLEN must be "XXXXXX";
 373    they are replaced with a string that makes the file name unique.
 374    The flags are a bitmask, possibly including O_CLOEXEC (defined in <fcntl.h>)
 375    and O_TEXT, O_BINARY (defined in "binary-io.h").
 376    The file is then created, with the specified flags, ensuring it didn't exist
 377    before.
 378    The file is created read-write (mask at least 0600 & ~umask), but it may be
 379    world-readable and world-writable (mask 0666 & ~umask), depending on the
 380    implementation.
 381    Returns the open file descriptor if successful, otherwise -1 and errno
 382    set.  */
 383 # if !@HAVE_MKOSTEMPS@
 384 _GL_FUNCDECL_SYS (mkostemps, int,
 385                   (char * /*template*/, int /*suffixlen*/, int /*flags*/)
 386                   _GL_ARG_NONNULL ((1)));
 387 # endif
 388 _GL_CXXALIAS_SYS (mkostemps, int,
 389                   (char * /*template*/, int /*suffixlen*/, int /*flags*/));
 390 _GL_CXXALIASWARN (mkostemps);
 391 #elif defined GNULIB_POSIXCHECK
 392 # undef mkostemps
 393 # if HAVE_RAW_DECL_MKOSTEMPS
 394 _GL_WARN_ON_USE (mkostemps, "mkostemps is unportable - "
 395                  "use gnulib module mkostemps for portability");
 396 # endif
 397 #endif
 398
 399 #if @GNULIB_MKSTEMP@
 400 /* Create a unique temporary file from TEMPLATE.
 401    The last six characters of TEMPLATE must be "XXXXXX";
 402    they are replaced with a string that makes the file name unique.
 403    The file is then created, ensuring it didn't exist before.
 404    The file is created read-write (mask at least 0600 & ~umask), but it may be
 405    world-readable and world-writable (mask 0666 & ~umask), depending on the
 406    implementation.
 407    Returns the open file descriptor if successful, otherwise -1 and errno
 408    set.  */
 409 # if @REPLACE_MKSTEMP@
 410 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 411 #   define mkstemp rpl_mkstemp
 412 #  endif
 413 _GL_FUNCDECL_RPL (mkstemp, int, (char * /*template*/) _GL_ARG_NONNULL ((1)));
 414 _GL_CXXALIAS_RPL (mkstemp, int, (char * /*template*/));
 415 # else
 416 #  if ! @HAVE_MKSTEMP@
 417 _GL_FUNCDECL_SYS (mkstemp, int, (char * /*template*/) _GL_ARG_NONNULL ((1)));
 418 #  endif
 419 _GL_CXXALIAS_SYS (mkstemp, int, (char * /*template*/));
 420 # endif
 421 _GL_CXXALIASWARN (mkstemp);
 422 #elif defined GNULIB_POSIXCHECK
 423 # undef mkstemp
 424 # if HAVE_RAW_DECL_MKSTEMP
 425 _GL_WARN_ON_USE (mkstemp, "mkstemp is unportable - "
 426                  "use gnulib module mkstemp for portability");
 427 # endif
 428 #endif
 429
 430 #if @GNULIB_MKSTEMPS@
 431 /* Create a unique temporary file from TEMPLATE.
 432    The last six characters of TEMPLATE prior to a suffix of length
 433    SUFFIXLEN must be "XXXXXX";
 434    they are replaced with a string that makes the file name unique.
 435    The file is then created, ensuring it didn't exist before.
 436    The file is created read-write (mask at least 0600 & ~umask), but it may be
 437    world-readable and world-writable (mask 0666 & ~umask), depending on the
 438    implementation.
 439    Returns the open file descriptor if successful, otherwise -1 and errno
 440    set.  */
 441 # if !@HAVE_MKSTEMPS@
 442 _GL_FUNCDECL_SYS (mkstemps, int, (char * /*template*/, int /*suffixlen*/)
 443                                  _GL_ARG_NONNULL ((1)));
 444 # endif
 445 _GL_CXXALIAS_SYS (mkstemps, int, (char * /*template*/, int /*suffixlen*/));
 446 _GL_CXXALIASWARN (mkstemps);
 447 #elif defined GNULIB_POSIXCHECK
 448 # undef mkstemps
 449 # if HAVE_RAW_DECL_MKSTEMPS
 450 _GL_WARN_ON_USE (mkstemps, "mkstemps is unportable - "
 451                  "use gnulib module mkstemps for portability");
 452 # endif
 453 #endif
 454
 455 #if @GNULIB_POSIX_OPENPT@
 456 /* Return an FD open to the master side of a pseudo-terminal.  Flags should
 457    include O_RDWR, and may also include O_NOCTTY.  */
 458 # if !@HAVE_POSIX_OPENPT@
 459 _GL_FUNCDECL_SYS (posix_openpt, int, (int flags));
 460 # endif
 461 _GL_CXXALIAS_SYS (posix_openpt, int, (int flags));
 462 _GL_CXXALIASWARN (posix_openpt);
 463 #elif defined GNULIB_POSIXCHECK
 464 # undef posix_openpt
 465 # if HAVE_RAW_DECL_POSIX_OPENPT
 466 _GL_WARN_ON_USE (posix_openpt, "posix_openpt is not portable - "
 467                  "use gnulib module posix_openpt for portability");
 468 # endif
 469 #endif
 470
 471 #if @GNULIB_PTSNAME@
 472 /* Return the pathname of the pseudo-terminal slave associated with
 473    the master FD is open on, or NULL on errors.  */
 474 # if @REPLACE_PTSNAME@
 475 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 476 #   undef ptsname
 477 #   define ptsname rpl_ptsname
 478 #  endif
 479 _GL_FUNCDECL_RPL (ptsname, char *, (int fd));
 480 _GL_CXXALIAS_RPL (ptsname, char *, (int fd));
 481 # else
 482 #  if !@HAVE_PTSNAME@
 483 _GL_FUNCDECL_SYS (ptsname, char *, (int fd));
 484 #  endif
 485 _GL_CXXALIAS_SYS (ptsname, char *, (int fd));
 486 # endif
 487 _GL_CXXALIASWARN (ptsname);
 488 #elif defined GNULIB_POSIXCHECK
 489 # undef ptsname
 490 # if HAVE_RAW_DECL_PTSNAME
 491 _GL_WARN_ON_USE (ptsname, "ptsname is not portable - "
 492                  "use gnulib module ptsname for portability");
 493 # endif
 494 #endif
 495
 496 #if @GNULIB_PTSNAME_R@
 497 /* Set the pathname of the pseudo-terminal slave associated with
 498    the master FD is open on and return 0, or set errno and return
 499    non-zero on errors.  */
 500 # if @REPLACE_PTSNAME_R@
 501 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 502 #   undef ptsname_r
 503 #   define ptsname_r rpl_ptsname_r
 504 #  endif
 505 _GL_FUNCDECL_RPL (ptsname_r, int, (int fd, char *buf, size_t len));
 506 _GL_CXXALIAS_RPL (ptsname_r, int, (int fd, char *buf, size_t len));
 507 # else
 508 #  if !@HAVE_PTSNAME_R@
 509 _GL_FUNCDECL_SYS (ptsname_r, int, (int fd, char *buf, size_t len));
 510 #  endif
 511 _GL_CXXALIAS_SYS (ptsname_r, int, (int fd, char *buf, size_t len));
 512 # endif
 513 _GL_CXXALIASWARN (ptsname_r);
 514 #elif defined GNULIB_POSIXCHECK
 515 # undef ptsname_r
 516 # if HAVE_RAW_DECL_PTSNAME_R
 517 _GL_WARN_ON_USE (ptsname_r, "ptsname_r is not portable - "
 518                  "use gnulib module ptsname_r for portability");
 519 # endif
 520 #endif
 521
 522 #if @GNULIB_PUTENV@
 523 # if @REPLACE_PUTENV@
 524 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 525 #   undef putenv
 526 #   define putenv rpl_putenv
 527 #  endif
 528 _GL_FUNCDECL_RPL (putenv, int, (char *string) _GL_ARG_NONNULL ((1)));
 529 _GL_CXXALIAS_RPL (putenv, int, (char *string));
 530 # else
 531 _GL_CXXALIAS_SYS (putenv, int, (char *string));
 532 # endif
 533 _GL_CXXALIASWARN (putenv);
 534 #endif
 535
 536 #if @GNULIB_QSORT_R@
 537 /* Sort an array of NMEMB elements, starting at address BASE, each element
 538    occupying SIZE bytes, in ascending order according to the comparison
 539    function COMPARE.  */
 540 # if @REPLACE_QSORT_R@
 541 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 542 #   undef qsort_r
 543 #   define qsort_r rpl_qsort_r
 544 #  endif
 545 _GL_FUNCDECL_RPL (qsort_r, void, (void *base, size_t nmemb, size_t size,
 546                                   int (*compare) (void const *, void const *,
 547                                                   void *),
 548                                   void *arg) _GL_ARG_NONNULL ((1, 4)));
 549 _GL_CXXALIAS_RPL (qsort_r, void, (void *base, size_t nmemb, size_t size,
 550                                   int (*compare) (void const *, void const *,
 551                                                   void *),
 552                                   void *arg));
 553 # else
 554 #  if !@HAVE_QSORT_R@
 555 _GL_FUNCDECL_SYS (qsort_r, void, (void *base, size_t nmemb, size_t size,
 556                                   int (*compare) (void const *, void const *,
 557                                                   void *),
 558                                   void *arg) _GL_ARG_NONNULL ((1, 4)));
 559 #  endif
 560 _GL_CXXALIAS_SYS (qsort_r, void, (void *base, size_t nmemb, size_t size,
 561                                   int (*compare) (void const *, void const *,
 562                                                   void *),
 563                                   void *arg));
 564 # endif
 565 _GL_CXXALIASWARN (qsort_r);
 566 #elif defined GNULIB_POSIXCHECK
 567 # undef qsort_r
 568 # if HAVE_RAW_DECL_QSORT_R
 569 _GL_WARN_ON_USE (qsort_r, "qsort_r is not portable - "
 570                  "use gnulib module qsort_r for portability");
 571 # endif
 572 #endif
 573
 574
 575 #if @GNULIB_RANDOM_R@
 576 # if !@HAVE_RANDOM_R@
 577 #  ifndef RAND_MAX
 578 #   define RAND_MAX 2147483647
 579 #  endif
 580 # endif
 581 #endif
 582
 583
 584 #if @GNULIB_RANDOM@
 585 # if !@HAVE_RANDOM@
 586 _GL_FUNCDECL_SYS (random, long, (void));
 587 # endif
 588 _GL_CXXALIAS_SYS (random, long, (void));
 589 _GL_CXXALIASWARN (random);
 590 #elif defined GNULIB_POSIXCHECK
 591 # undef random
 592 # if HAVE_RAW_DECL_RANDOM
 593 _GL_WARN_ON_USE (random, "random is unportable - "
 594                  "use gnulib module random for portability");
 595 # endif
 596 #endif
 597
 598 #if @GNULIB_RANDOM@
 599 # if !@HAVE_RANDOM@
 600 _GL_FUNCDECL_SYS (srandom, void, (unsigned int seed));
 601 # endif
 602 _GL_CXXALIAS_SYS (srandom, void, (unsigned int seed));
 603 _GL_CXXALIASWARN (srandom);
 604 #elif defined GNULIB_POSIXCHECK
 605 # undef srandom
 606 # if HAVE_RAW_DECL_SRANDOM
 607 _GL_WARN_ON_USE (srandom, "srandom is unportable - "
 608                  "use gnulib module random for portability");
 609 # endif
 610 #endif
 611
 612 #if @GNULIB_RANDOM@
 613 # if !@HAVE_RANDOM@ || !@HAVE_DECL_INITSTATE@
 614 _GL_FUNCDECL_SYS (initstate, char *,
 615                   (unsigned int seed, char *buf, size_t buf_size)
 616                   _GL_ARG_NONNULL ((2)));
 617 # endif
 618 _GL_CXXALIAS_SYS (initstate, char *,
 619                   (unsigned int seed, char *buf, size_t buf_size));
 620 _GL_CXXALIASWARN (initstate);
 621 #elif defined GNULIB_POSIXCHECK
 622 # undef initstate
 623 # if HAVE_RAW_DECL_INITSTATE_R
 624 _GL_WARN_ON_USE (initstate, "initstate is unportable - "
 625                  "use gnulib module random for portability");
 626 # endif
 627 #endif
 628
 629 #if @GNULIB_RANDOM@
 630 # if !@HAVE_RANDOM@ || !@HAVE_DECL_SETSTATE@
 631 _GL_FUNCDECL_SYS (setstate, char *, (char *arg_state) _GL_ARG_NONNULL ((1)));
 632 # endif
 633 _GL_CXXALIAS_SYS (setstate, char *, (char *arg_state));
 634 _GL_CXXALIASWARN (setstate);
 635 #elif defined GNULIB_POSIXCHECK
 636 # undef setstate
 637 # if HAVE_RAW_DECL_SETSTATE_R
 638 _GL_WARN_ON_USE (setstate, "setstate is unportable - "
 639                  "use gnulib module random for portability");
 640 # endif
 641 #endif
 642
 643
 644 #if @GNULIB_RANDOM_R@
 645 # if @REPLACE_RANDOM_R@
 646 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 647 #   undef random_r
 648 #   define random_r rpl_random_r
 649 #  endif
 650 _GL_FUNCDECL_RPL (random_r, int, (struct random_data *buf, int32_t *result)
 651                                  _GL_ARG_NONNULL ((1, 2)));
 652 _GL_CXXALIAS_RPL (random_r, int, (struct random_data *buf, int32_t *result));
 653 # else
 654 #  if !@HAVE_RANDOM_R@
 655 _GL_FUNCDECL_SYS (random_r, int, (struct random_data *buf, int32_t *result)
 656                                  _GL_ARG_NONNULL ((1, 2)));
 657 #  endif
 658 _GL_CXXALIAS_SYS (random_r, int, (struct random_data *buf, int32_t *result));
 659 # endif
 660 _GL_CXXALIASWARN (random_r);
 661 #elif defined GNULIB_POSIXCHECK
 662 # undef random_r
 663 # if HAVE_RAW_DECL_RANDOM_R
 664 _GL_WARN_ON_USE (random_r, "random_r is unportable - "
 665                  "use gnulib module random_r for portability");
 666 # endif
 667 #endif
 668
 669 #if @GNULIB_RANDOM_R@
 670 # if @REPLACE_RANDOM_R@
 671 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 672 #   undef srandom_r
 673 #   define srandom_r rpl_srandom_r
 674 #  endif
 675 _GL_FUNCDECL_RPL (srandom_r, int,
 676                   (unsigned int seed, struct random_data *rand_state)
 677                   _GL_ARG_NONNULL ((2)));
 678 _GL_CXXALIAS_RPL (srandom_r, int,
 679                   (unsigned int seed, struct random_data *rand_state));
 680 # else
 681 #  if !@HAVE_RANDOM_R@
 682 _GL_FUNCDECL_SYS (srandom_r, int,
 683                   (unsigned int seed, struct random_data *rand_state)
 684                   _GL_ARG_NONNULL ((2)));
 685 #  endif
 686 _GL_CXXALIAS_SYS (srandom_r, int,
 687                   (unsigned int seed, struct random_data *rand_state));
 688 # endif
 689 _GL_CXXALIASWARN (srandom_r);
 690 #elif defined GNULIB_POSIXCHECK
 691 # undef srandom_r
 692 # if HAVE_RAW_DECL_SRANDOM_R
 693 _GL_WARN_ON_USE (srandom_r, "srandom_r is unportable - "
 694                  "use gnulib module random_r for portability");
 695 # endif
 696 #endif
 697
 698 #if @GNULIB_RANDOM_R@
 699 # if @REPLACE_RANDOM_R@
 700 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 701 #   undef initstate_r
 702 #   define initstate_r rpl_initstate_r
 703 #  endif
 704 _GL_FUNCDECL_RPL (initstate_r, int,
 705                   (unsigned int seed, char *buf, size_t buf_size,
 706                    struct random_data *rand_state)
 707                   _GL_ARG_NONNULL ((2, 4)));
 708 _GL_CXXALIAS_RPL (initstate_r, int,
 709                   (unsigned int seed, char *buf, size_t buf_size,
 710                    struct random_data *rand_state));
 711 # else
 712 #  if !@HAVE_RANDOM_R@
 713 _GL_FUNCDECL_SYS (initstate_r, int,
 714                   (unsigned int seed, char *buf, size_t buf_size,
 715                    struct random_data *rand_state)
 716                   _GL_ARG_NONNULL ((2, 4)));
 717 #  endif
 718 _GL_CXXALIAS_SYS (initstate_r, int,
 719                   (unsigned int seed, char *buf, size_t buf_size,
 720                    struct random_data *rand_state));
 721 # endif
 722 _GL_CXXALIASWARN (initstate_r);
 723 #elif defined GNULIB_POSIXCHECK
 724 # undef initstate_r
 725 # if HAVE_RAW_DECL_INITSTATE_R
 726 _GL_WARN_ON_USE (initstate_r, "initstate_r is unportable - "
 727                  "use gnulib module random_r for portability");
 728 # endif
 729 #endif
 730
 731 #if @GNULIB_RANDOM_R@
 732 # if @REPLACE_RANDOM_R@
 733 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 734 #   undef setstate_r
 735 #   define setstate_r rpl_setstate_r
 736 #  endif
 737 _GL_FUNCDECL_RPL (setstate_r, int,
 738                   (char *arg_state, struct random_data *rand_state)
 739                   _GL_ARG_NONNULL ((1, 2)));
 740 _GL_CXXALIAS_RPL (setstate_r, int,
 741                   (char *arg_state, struct random_data *rand_state));
 742 # else
 743 #  if !@HAVE_RANDOM_R@
 744 _GL_FUNCDECL_SYS (setstate_r, int,
 745                   (char *arg_state, struct random_data *rand_state)
 746                   _GL_ARG_NONNULL ((1, 2)));
 747 #  endif
 748 _GL_CXXALIAS_SYS (setstate_r, int,
 749                   (char *arg_state, struct random_data *rand_state));
 750 # endif
 751 _GL_CXXALIASWARN (setstate_r);
 752 #elif defined GNULIB_POSIXCHECK
 753 # undef setstate_r
 754 # if HAVE_RAW_DECL_SETSTATE_R
 755 _GL_WARN_ON_USE (setstate_r, "setstate_r is unportable - "
 756                  "use gnulib module random_r for portability");
 757 # endif
 758 #endif
 759
 760
 761 #if @GNULIB_REALLOC_POSIX@
 762 # if @REPLACE_REALLOC@
 763 #  if !((defined __cplusplus && defined GNULIB_NAMESPACE) \
 764         || _GL_USE_STDLIB_ALLOC)
 765 #   undef realloc
 766 #   define realloc rpl_realloc
 767 #  endif
 768 _GL_FUNCDECL_RPL (realloc, void *, (void *ptr, size_t size));
 769 _GL_CXXALIAS_RPL (realloc, void *, (void *ptr, size_t size));
 770 # else
 771 _GL_CXXALIAS_SYS (realloc, void *, (void *ptr, size_t size));
 772 # endif
 773 _GL_CXXALIASWARN (realloc);
 774 #elif defined GNULIB_POSIXCHECK && !_GL_USE_STDLIB_ALLOC
 775 # undef realloc
 776 /* Assume realloc is always declared.  */
 777 _GL_WARN_ON_USE (realloc, "realloc is not POSIX compliant everywhere - "
 778                  "use gnulib module realloc-posix for portability");
 779 #endif
 780
 781
 782 #if @GNULIB_REALLOCARRAY@
 783 # if ! @HAVE_REALLOCARRAY@
 784 _GL_FUNCDECL_SYS (reallocarray, void *,
 785                   (void *ptr, size_t nmemb, size_t size));
 786 # endif
 787 _GL_CXXALIAS_SYS (reallocarray, void *,
 788                   (void *ptr, size_t nmemb, size_t size));
 789 _GL_CXXALIASWARN (reallocarray);
 790 #elif defined GNULIB_POSIXCHECK
 791 # undef reallocarray
 792 # if HAVE_RAW_DECL_REALLOCARRAY
 793 _GL_WARN_ON_USE (reallocarray, "reallocarray is not portable - "
 794                  "use gnulib module reallocarray for portability");
 795 # endif
 796 #endif
 797
 798 #if @GNULIB_REALPATH@
 799 # if @REPLACE_REALPATH@
 800 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 801 #   define realpath rpl_realpath
 802 #  endif
 803 _GL_FUNCDECL_RPL (realpath, char *, (const char *name, char *resolved)
 804                                     _GL_ARG_NONNULL ((1)));
 805 _GL_CXXALIAS_RPL (realpath, char *, (const char *name, char *resolved));
 806 # else
 807 #  if !@HAVE_REALPATH@
 808 _GL_FUNCDECL_SYS (realpath, char *, (const char *name, char *resolved)
 809                                     _GL_ARG_NONNULL ((1)));
 810 #  endif
 811 _GL_CXXALIAS_SYS (realpath, char *, (const char *name, char *resolved));
 812 # endif
 813 _GL_CXXALIASWARN (realpath);
 814 #elif defined GNULIB_POSIXCHECK
 815 # undef realpath
 816 # if HAVE_RAW_DECL_REALPATH
 817 _GL_WARN_ON_USE (realpath, "realpath is unportable - use gnulib module "
 818                  "canonicalize or canonicalize-lgpl for portability");
 819 # endif
 820 #endif
 821
 822 #if @GNULIB_RPMATCH@
 823 /* Test a user response to a question.
 824    Return 1 if it is affirmative, 0 if it is negative, or -1 if not clear.  */
 825 # if !@HAVE_RPMATCH@
 826 _GL_FUNCDECL_SYS (rpmatch, int, (const char *response) _GL_ARG_NONNULL ((1)));
 827 # endif
 828 _GL_CXXALIAS_SYS (rpmatch, int, (const char *response));
 829 _GL_CXXALIASWARN (rpmatch);
 830 #elif defined GNULIB_POSIXCHECK
 831 # undef rpmatch
 832 # if HAVE_RAW_DECL_RPMATCH
 833 _GL_WARN_ON_USE (rpmatch, "rpmatch is unportable - "
 834                  "use gnulib module rpmatch for portability");
 835 # endif
 836 #endif
 837
 838 #if @GNULIB_SECURE_GETENV@
 839 /* Look up NAME in the environment, returning 0 in insecure situations.  */
 840 # if !@HAVE_SECURE_GETENV@
 841 _GL_FUNCDECL_SYS (secure_getenv, char *,
 842                   (char const *name) _GL_ARG_NONNULL ((1)));
 843 # endif
 844 _GL_CXXALIAS_SYS (secure_getenv, char *, (char const *name));
 845 _GL_CXXALIASWARN (secure_getenv);
 846 #elif defined GNULIB_POSIXCHECK
 847 # undef secure_getenv
 848 # if HAVE_RAW_DECL_SECURE_GETENV
 849 _GL_WARN_ON_USE (secure_getenv, "secure_getenv is unportable - "
 850                  "use gnulib module secure_getenv for portability");
 851 # endif
 852 #endif
 853
 854 #if @GNULIB_SETENV@
 855 /* Set NAME to VALUE in the environment.
 856    If REPLACE is nonzero, overwrite an existing value.  */
 857 # if @REPLACE_SETENV@
 858 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 859 #   undef setenv
 860 #   define setenv rpl_setenv
 861 #  endif
 862 _GL_FUNCDECL_RPL (setenv, int,
 863                   (const char *name, const char *value, int replace)
 864                   _GL_ARG_NONNULL ((1)));
 865 _GL_CXXALIAS_RPL (setenv, int,
 866                   (const char *name, const char *value, int replace));
 867 # else
 868 #  if !@HAVE_DECL_SETENV@
 869 _GL_FUNCDECL_SYS (setenv, int,
 870                   (const char *name, const char *value, int replace)
 871                   _GL_ARG_NONNULL ((1)));
 872 #  endif
 873 _GL_CXXALIAS_SYS (setenv, int,
 874                   (const char *name, const char *value, int replace));
 875 # endif
 876 # if !(@REPLACE_SETENV@ && !@HAVE_DECL_SETENV@)
 877 _GL_CXXALIASWARN (setenv);
 878 # endif
 879 #elif defined GNULIB_POSIXCHECK
 880 # undef setenv
 881 # if HAVE_RAW_DECL_SETENV
 882 _GL_WARN_ON_USE (setenv, "setenv is unportable - "
 883                  "use gnulib module setenv for portability");
 884 # endif
 885 #endif
 886
 887 #if @GNULIB_STRTOD@
 888  /* Parse a double from STRING, updating ENDP if appropriate.  */
 889 # if @REPLACE_STRTOD@
 890 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 891 #   define strtod rpl_strtod
 892 #  endif
 893 _GL_FUNCDECL_RPL (strtod, double, (const char *str, char **endp)
 894                                   _GL_ARG_NONNULL ((1)));
 895 _GL_CXXALIAS_RPL (strtod, double, (const char *str, char **endp));
 896 # else
 897 #  if !@HAVE_STRTOD@
 898 _GL_FUNCDECL_SYS (strtod, double, (const char *str, char **endp)
 899                                   _GL_ARG_NONNULL ((1)));
 900 #  endif
 901 _GL_CXXALIAS_SYS (strtod, double, (const char *str, char **endp));
 902 # endif
 903 _GL_CXXALIASWARN (strtod);
 904 #elif defined GNULIB_POSIXCHECK
 905 # undef strtod
 906 # if HAVE_RAW_DECL_STRTOD
 907 _GL_WARN_ON_USE (strtod, "strtod is unportable - "
 908                  "use gnulib module strtod for portability");
 909 # endif
 910 #endif
 911
 912 #if @GNULIB_STRTOLL@
 913 /* Parse a signed integer whose textual representation starts at STRING.
 914    The integer is expected to be in base BASE (2 <= BASE <= 36); if BASE == 0,
 915    it may be decimal or octal (with prefix "0") or hexadecimal (with prefix
 916    "0x").
 917    If ENDPTR is not NULL, the address of the first byte after the integer is
 918    stored in *ENDPTR.
 919    Upon overflow, the return value is LLONG_MAX or LLONG_MIN, and errno is set
 920    to ERANGE.  */
 921 # if !@HAVE_STRTOLL@
 922 _GL_FUNCDECL_SYS (strtoll, long long,
 923                   (const char *string, char **endptr, int base)
 924                   _GL_ARG_NONNULL ((1)));
 925 # endif
 926 _GL_CXXALIAS_SYS (strtoll, long long,
 927                   (const char *string, char **endptr, int base));
 928 _GL_CXXALIASWARN (strtoll);
 929 #elif defined GNULIB_POSIXCHECK
 930 # undef strtoll
 931 # if HAVE_RAW_DECL_STRTOLL
 932 _GL_WARN_ON_USE (strtoll, "strtoll is unportable - "
 933                  "use gnulib module strtoll for portability");
 934 # endif
 935 #endif
 936
 937 #if @GNULIB_STRTOULL@
 938 /* Parse an unsigned integer whose textual representation starts at STRING.
 939    The integer is expected to be in base BASE (2 <= BASE <= 36); if BASE == 0,
 940    it may be decimal or octal (with prefix "0") or hexadecimal (with prefix
 941    "0x").
 942    If ENDPTR is not NULL, the address of the first byte after the integer is
 943    stored in *ENDPTR.
 944    Upon overflow, the return value is ULLONG_MAX, and errno is set to
 945    ERANGE.  */
 946 # if !@HAVE_STRTOULL@
 947 _GL_FUNCDECL_SYS (strtoull, unsigned long long,
 948                   (const char *string, char **endptr, int base)
 949                   _GL_ARG_NONNULL ((1)));
 950 # endif
 951 _GL_CXXALIAS_SYS (strtoull, unsigned long long,
 952                   (const char *string, char **endptr, int base));
 953 _GL_CXXALIASWARN (strtoull);
 954 #elif defined GNULIB_POSIXCHECK
 955 # undef strtoull
 956 # if HAVE_RAW_DECL_STRTOULL
 957 _GL_WARN_ON_USE (strtoull, "strtoull is unportable - "
 958                  "use gnulib module strtoull for portability");
 959 # endif
 960 #endif
 961
 962 #if @GNULIB_UNLOCKPT@
 963 /* Unlock the slave side of the pseudo-terminal whose master side is specified
 964    by FD, so that it can be opened.  */
 965 # if !@HAVE_UNLOCKPT@
 966 _GL_FUNCDECL_SYS (unlockpt, int, (int fd));
 967 # endif
 968 _GL_CXXALIAS_SYS (unlockpt, int, (int fd));
 969 _GL_CXXALIASWARN (unlockpt);
 970 #elif defined GNULIB_POSIXCHECK
 971 # undef unlockpt
 972 # if HAVE_RAW_DECL_UNLOCKPT
 973 _GL_WARN_ON_USE (unlockpt, "unlockpt is not portable - "
 974                  "use gnulib module unlockpt for portability");
 975 # endif
 976 #endif
 977
 978 #if @GNULIB_UNSETENV@
 979 /* Remove the variable NAME from the environment.  */
 980 # if @REPLACE_UNSETENV@
 981 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 982 #   undef unsetenv
 983 #   define unsetenv rpl_unsetenv
 984 #  endif
 985 _GL_FUNCDECL_RPL (unsetenv, int, (const char *name) _GL_ARG_NONNULL ((1)));
 986 _GL_CXXALIAS_RPL (unsetenv, int, (const char *name));
 987 # else
 988 #  if !@HAVE_DECL_UNSETENV@
 989 _GL_FUNCDECL_SYS (unsetenv, int, (const char *name) _GL_ARG_NONNULL ((1)));
 990 #  endif
 991 _GL_CXXALIAS_SYS (unsetenv, int, (const char *name));
 992 # endif
 993 # if !(@REPLACE_UNSETENV@ && !@HAVE_DECL_UNSETENV@)
 994 _GL_CXXALIASWARN (unsetenv);
 995 # endif
 996 #elif defined GNULIB_POSIXCHECK
 997 # undef unsetenv
 998 # if HAVE_RAW_DECL_UNSETENV
 999 _GL_WARN_ON_USE (unsetenv, "unsetenv is unportable - "
1000                  "use gnulib module unsetenv for portability");
1001 # endif
1002 #endif
1003
1004 /* Convert a wide character to a multibyte character.  */
1005 #if @GNULIB_WCTOMB@
1006 # if @REPLACE_WCTOMB@
1007 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1008 #   undef wctomb
1009 #   define wctomb rpl_wctomb
1010 #  endif
1011 _GL_FUNCDECL_RPL (wctomb, int, (char *s, wchar_t wc));
1012 _GL_CXXALIAS_RPL (wctomb, int, (char *s, wchar_t wc));
1013 # else
1014 _GL_CXXALIAS_SYS (wctomb, int, (char *s, wchar_t wc));
1015 # endif
1016 _GL_CXXALIASWARN (wctomb);
1017 #endif
1018
1019
1020 #endif /* _@GUARD_PREFIX@_STDLIB_H */
1021 #endif /* _@GUARD_PREFIX@_STDLIB_H */
1022 #endif