lib/string.in.h

   1 /* A GNU-like <string.h>.
   2
   3    Copyright (C) 1995-1996, 2001-2010 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 Lesser General Public License as published by
   7    the Free Software Foundation; either version 2, or (at your option)
   8    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 Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public License
  16    along with this program; if not, write to the Free Software Foundation,
  17    Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
  18
  19 #ifndef _GL_STRING_H
  20
  21 #if __GNUC__ >= 3
  22 @PRAGMA_SYSTEM_HEADER@
  23 #endif
  24 @PRAGMA_COLUMNS@
  25
  26 /* The include_next requires a split double-inclusion guard.  */
  27 #@INCLUDE_NEXT@ @NEXT_STRING_H@
  28
  29 #ifndef _GL_STRING_H
  30 #define _GL_STRING_H
  31
  32 /* NetBSD 5.0 mis-defines NULL.  */
  33 #include <stddef.h>
  34
  35 /* MirBSD defines mbslen as a macro.  */
  36 #if @GNULIB_MBSLEN@ && defined __MirBSD__
  37 # include <wchar.h>
  38 #endif
  39
  40 #ifndef __attribute__
  41 /* This feature is available in gcc versions 2.5 and later.  */
  42 # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5)
  43 #  define __attribute__(Spec) /* empty */
  44 # endif
  45 #endif
  46 /* The attribute __pure__ was added in gcc 2.96.  */
  47 #if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 96)
  48 # define _GL_ATTRIBUTE_PURE __attribute__ ((__pure__))
  49 #else
  50 # define _GL_ATTRIBUTE_PURE /* empty */
  51 #endif
  52
  53 /* NetBSD 5.0 declares strsignal in <unistd.h>, not in <string.h>.  */
  54 /* But in any case avoid namespace pollution on glibc systems.  */
  55 #if (@GNULIB_STRSIGNAL@ || defined GNULIB_POSIXCHECK) && defined __NetBSD__ \
  56     && ! defined __GLIBC__
  57 # include <unistd.h>
  58 #endif
  59
  60 /* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
  61
  62 /* The definition of _GL_ARG_NONNULL is copied here.  */
  63
  64 /* The definition of _GL_WARN_ON_USE is copied here.  */
  65
  66
  67 /* Return the first instance of C within N bytes of S, or NULL.  */
  68 #if @GNULIB_MEMCHR@
  69 # if @REPLACE_MEMCHR@
  70 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
  71 #   define memchr rpl_memchr
  72 #  endif
  73 _GL_FUNCDECL_RPL (memchr, void *, (void const *__s, int __c, size_t __n)
  74                                   _GL_ATTRIBUTE_PURE
  75                                   _GL_ARG_NONNULL ((1)));
  76 _GL_CXXALIAS_RPL (memchr, void *, (void const *__s, int __c, size_t __n));
  77 # else
  78 #  if ! @HAVE_MEMCHR@
  79 _GL_FUNCDECL_SYS (memchr, void *, (void const *__s, int __c, size_t __n)
  80                                   _GL_ATTRIBUTE_PURE
  81                                   _GL_ARG_NONNULL ((1)));
  82 #  endif
  83   /* On some systems, this function is defined as an overloaded function:
  84        extern "C" { const void * std::memchr (const void *, int, size_t); }
  85        extern "C++" { void * std::memchr (void *, int, size_t); }  */
  86 _GL_CXXALIAS_SYS_CAST2 (memchr,
  87                         void *, (void const *__s, int __c, size_t __n),
  88                         void const *, (void const *__s, int __c, size_t __n));
  89 # endif
  90 # if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 10) && !defined __UCLIBC__) \
  91      && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
  92 _GL_CXXALIASWARN1 (memchr, void *, (void *__s, int __c, size_t __n));
  93 _GL_CXXALIASWARN1 (memchr, void const *,
  94                    (void const *__s, int __c, size_t __n));
  95 # else
  96 _GL_CXXALIASWARN (memchr);
  97 # endif
  98 #elif defined GNULIB_POSIXCHECK
  99 # undef memchr
 100 /* Assume memchr is always declared.  */
 101 _GL_WARN_ON_USE (memchr, "memchr has platform-specific bugs - "
 102                  "use gnulib module memchr for portability" );
 103 #endif
 104
 105 /* Return the first occurrence of NEEDLE in HAYSTACK.  */
 106 #if @GNULIB_MEMMEM@
 107 # if @REPLACE_MEMMEM@
 108 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 109 #   define memmem rpl_memmem
 110 #  endif
 111 _GL_FUNCDECL_RPL (memmem, void *,
 112                   (void const *__haystack, size_t __haystack_len,
 113                    void const *__needle, size_t __needle_len)
 114                   _GL_ATTRIBUTE_PURE
 115                   _GL_ARG_NONNULL ((1, 3)));
 116 _GL_CXXALIAS_RPL (memmem, void *,
 117                   (void const *__haystack, size_t __haystack_len,
 118                    void const *__needle, size_t __needle_len));
 119 # else
 120 #  if ! @HAVE_DECL_MEMMEM@
 121 _GL_FUNCDECL_SYS (memmem, void *,
 122                   (void const *__haystack, size_t __haystack_len,
 123                    void const *__needle, size_t __needle_len)
 124                   _GL_ATTRIBUTE_PURE
 125                   _GL_ARG_NONNULL ((1, 3)));
 126 #  endif
 127 _GL_CXXALIAS_SYS (memmem, void *,
 128                   (void const *__haystack, size_t __haystack_len,
 129                    void const *__needle, size_t __needle_len));
 130 # endif
 131 _GL_CXXALIASWARN (memmem);
 132 #elif defined GNULIB_POSIXCHECK
 133 # undef memmem
 134 # if HAVE_RAW_DECL_MEMMEM
 135 _GL_WARN_ON_USE (memmem, "memmem is unportable and often quadratic - "
 136                  "use gnulib module memmem-simple for portability, "
 137                  "and module memmem for speed" );
 138 # endif
 139 #endif
 140
 141 /* Copy N bytes of SRC to DEST, return pointer to bytes after the
 142    last written byte.  */
 143 #if @GNULIB_MEMPCPY@
 144 # if ! @HAVE_MEMPCPY@
 145 _GL_FUNCDECL_SYS (mempcpy, void *,
 146                   (void *restrict __dest, void const *restrict __src,
 147                    size_t __n)
 148                   _GL_ARG_NONNULL ((1, 2)));
 149 # endif
 150 _GL_CXXALIAS_SYS (mempcpy, void *,
 151                   (void *restrict __dest, void const *restrict __src,
 152                    size_t __n));
 153 _GL_CXXALIASWARN (mempcpy);
 154 #elif defined GNULIB_POSIXCHECK
 155 # undef mempcpy
 156 # if HAVE_RAW_DECL_MEMPCPY
 157 _GL_WARN_ON_USE (mempcpy, "mempcpy is unportable - "
 158                  "use gnulib module mempcpy for portability");
 159 # endif
 160 #endif
 161
 162 /* Search backwards through a block for a byte (specified as an int).  */
 163 #if @GNULIB_MEMRCHR@
 164 # if ! @HAVE_DECL_MEMRCHR@
 165 _GL_FUNCDECL_SYS (memrchr, void *, (void const *, int, size_t)
 166                                    _GL_ATTRIBUTE_PURE
 167                                    _GL_ARG_NONNULL ((1)));
 168 # endif
 169   /* On some systems, this function is defined as an overloaded function:
 170        extern "C++" { const void * std::memrchr (const void *, int, size_t); }
 171        extern "C++" { void * std::memrchr (void *, int, size_t); }  */
 172 _GL_CXXALIAS_SYS_CAST2 (memrchr,
 173                         void *, (void const *, int, size_t),
 174                         void const *, (void const *, int, size_t));
 175 # if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 10) && !defined __UCLIBC__) \
 176      && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
 177 _GL_CXXALIASWARN1 (memrchr, void *, (void *, int, size_t));
 178 _GL_CXXALIASWARN1 (memrchr, void const *, (void const *, int, size_t));
 179 # else
 180 _GL_CXXALIASWARN (memrchr);
 181 # endif
 182 #elif defined GNULIB_POSIXCHECK
 183 # undef memrchr
 184 # if HAVE_RAW_DECL_MEMRCHR
 185 _GL_WARN_ON_USE (memrchr, "memrchr is unportable - "
 186                  "use gnulib module memrchr for portability");
 187 # endif
 188 #endif
 189
 190 /* Find the first occurrence of C in S.  More efficient than
 191    memchr(S,C,N), at the expense of undefined behavior if C does not
 192    occur within N bytes.  */
 193 #if @GNULIB_RAWMEMCHR@
 194 # if ! @HAVE_RAWMEMCHR@
 195 _GL_FUNCDECL_SYS (rawmemchr, void *, (void const *__s, int __c_in)
 196                                      _GL_ATTRIBUTE_PURE
 197                                      _GL_ARG_NONNULL ((1)));
 198 # endif
 199   /* On some systems, this function is defined as an overloaded function:
 200        extern "C++" { const void * std::rawmemchr (const void *, int); }
 201        extern "C++" { void * std::rawmemchr (void *, int); }  */
 202 _GL_CXXALIAS_SYS_CAST2 (rawmemchr,
 203                         void *, (void const *__s, int __c_in),
 204                         void const *, (void const *__s, int __c_in));
 205 # if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 10) && !defined __UCLIBC__) \
 206      && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
 207 _GL_CXXALIASWARN1 (rawmemchr, void *, (void *__s, int __c_in));
 208 _GL_CXXALIASWARN1 (rawmemchr, void const *, (void const *__s, int __c_in));
 209 # else
 210 _GL_CXXALIASWARN (rawmemchr);
 211 # endif
 212 #elif defined GNULIB_POSIXCHECK
 213 # undef rawmemchr
 214 # if HAVE_RAW_DECL_RAWMEMCHR
 215 _GL_WARN_ON_USE (rawmemchr, "rawmemchr is unportable - "
 216                  "use gnulib module rawmemchr for portability");
 217 # endif
 218 #endif
 219
 220 /* Copy SRC to DST, returning the address of the terminating '\0' in DST.  */
 221 #if @GNULIB_STPCPY@
 222 # if ! @HAVE_STPCPY@
 223 _GL_FUNCDECL_SYS (stpcpy, char *,
 224                   (char *restrict __dst, char const *restrict __src)
 225                   _GL_ARG_NONNULL ((1, 2)));
 226 # endif
 227 _GL_CXXALIAS_SYS (stpcpy, char *,
 228                   (char *restrict __dst, char const *restrict __src));
 229 _GL_CXXALIASWARN (stpcpy);
 230 #elif defined GNULIB_POSIXCHECK
 231 # undef stpcpy
 232 # if HAVE_RAW_DECL_STPCPY
 233 _GL_WARN_ON_USE (stpcpy, "stpcpy is unportable - "
 234                  "use gnulib module stpcpy for portability");
 235 # endif
 236 #endif
 237
 238 /* Copy no more than N bytes of SRC to DST, returning a pointer past the
 239    last non-NUL byte written into DST.  */
 240 #if @GNULIB_STPNCPY@
 241 # if @REPLACE_STPNCPY@
 242 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 243 #   undef stpncpy
 244 #   define stpncpy rpl_stpncpy
 245 #  endif
 246 _GL_FUNCDECL_RPL (stpncpy, char *,
 247                   (char *restrict __dst, char const *restrict __src,
 248                    size_t __n)
 249                   _GL_ARG_NONNULL ((1, 2)));
 250 _GL_CXXALIAS_RPL (stpncpy, char *,
 251                   (char *restrict __dst, char const *restrict __src,
 252                    size_t __n));
 253 # else
 254 #  if ! @HAVE_STPNCPY@
 255 _GL_FUNCDECL_SYS (stpncpy, char *,
 256                   (char *restrict __dst, char const *restrict __src,
 257                    size_t __n)
 258                   _GL_ARG_NONNULL ((1, 2)));
 259 #  endif
 260 _GL_CXXALIAS_SYS (stpncpy, char *,
 261                   (char *restrict __dst, char const *restrict __src,
 262                    size_t __n));
 263 # endif
 264 _GL_CXXALIASWARN (stpncpy);
 265 #elif defined GNULIB_POSIXCHECK
 266 # undef stpncpy
 267 # if HAVE_RAW_DECL_STPNCPY
 268 _GL_WARN_ON_USE (stpncpy, "stpncpy is unportable - "
 269                  "use gnulib module stpncpy for portability");
 270 # endif
 271 #endif
 272
 273 #if defined GNULIB_POSIXCHECK
 274 /* strchr() does not work with multibyte strings if the locale encoding is
 275    GB18030 and the character to be searched is a digit.  */
 276 # undef strchr
 277 /* Assume strchr is always declared.  */
 278 _GL_WARN_ON_USE (strchr, "strchr cannot work correctly on character strings "
 279                  "in some multibyte locales - "
 280                  "use mbschr if you care about internationalization");
 281 #endif
 282
 283 /* Find the first occurrence of C in S or the final NUL byte.  */
 284 #if @GNULIB_STRCHRNUL@
 285 # if ! @HAVE_STRCHRNUL@
 286 _GL_FUNCDECL_SYS (strchrnul, char *, (char const *__s, int __c_in)
 287                                      _GL_ATTRIBUTE_PURE
 288                                      _GL_ARG_NONNULL ((1)));
 289 # endif
 290   /* On some systems, this function is defined as an overloaded function:
 291        extern "C++" { const char * std::strchrnul (const char *, int); }
 292        extern "C++" { char * std::strchrnul (char *, int); }  */
 293 _GL_CXXALIAS_SYS_CAST2 (strchrnul,
 294                         char *, (char const *__s, int __c_in),
 295                         char const *, (char const *__s, int __c_in));
 296 # if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 10) && !defined __UCLIBC__) \
 297      && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
 298 _GL_CXXALIASWARN1 (strchrnul, char *, (char *__s, int __c_in));
 299 _GL_CXXALIASWARN1 (strchrnul, char const *, (char const *__s, int __c_in));
 300 # else
 301 _GL_CXXALIASWARN (strchrnul);
 302 # endif
 303 #elif defined GNULIB_POSIXCHECK
 304 # undef strchrnul
 305 # if HAVE_RAW_DECL_STRCHRNUL
 306 _GL_WARN_ON_USE (strchrnul, "strchrnul is unportable - "
 307                  "use gnulib module strchrnul for portability");
 308 # endif
 309 #endif
 310
 311 /* Duplicate S, returning an identical malloc'd string.  */
 312 #if @GNULIB_STRDUP@
 313 # if @REPLACE_STRDUP@
 314 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 315 #   undef strdup
 316 #   define strdup rpl_strdup
 317 #  endif
 318 _GL_FUNCDECL_RPL (strdup, char *, (char const *__s) _GL_ARG_NONNULL ((1)));
 319 _GL_CXXALIAS_RPL (strdup, char *, (char const *__s));
 320 # else
 321 #  if defined __cplusplus && defined GNULIB_NAMESPACE && defined strdup
 322     /* strdup exists as a function and as a macro.  Get rid of the macro.  */
 323 #   undef strdup
 324 #  endif
 325 #  if !(@HAVE_DECL_STRDUP@ || defined strdup)
 326 _GL_FUNCDECL_SYS (strdup, char *, (char const *__s) _GL_ARG_NONNULL ((1)));
 327 #  endif
 328 _GL_CXXALIAS_SYS (strdup, char *, (char const *__s));
 329 # endif
 330 _GL_CXXALIASWARN (strdup);
 331 #elif defined GNULIB_POSIXCHECK
 332 # undef strdup
 333 # if HAVE_RAW_DECL_STRDUP
 334 _GL_WARN_ON_USE (strdup, "strdup is unportable - "
 335                  "use gnulib module strdup for portability");
 336 # endif
 337 #endif
 338
 339 /* Append no more than N characters from SRC onto DEST.  */
 340 #if @GNULIB_STRNCAT@
 341 # if @REPLACE_STRNCAT@
 342 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 343 #   undef strncat
 344 #   define strncat rpl_strncat
 345 #  endif
 346 _GL_FUNCDECL_RPL (strncat, char *, (char *dest, const char *src, size_t n)
 347                                    _GL_ARG_NONNULL ((1, 2)));
 348 _GL_CXXALIAS_RPL (strncat, char *, (char *dest, const char *src, size_t n));
 349 # else
 350 _GL_CXXALIAS_SYS (strncat, char *, (char *dest, const char *src, size_t n));
 351 # endif
 352 _GL_CXXALIASWARN (strncat);
 353 #elif defined GNULIB_POSIXCHECK
 354 # undef strncat
 355 # if HAVE_RAW_DECL_STRNCAT
 356 _GL_WARN_ON_USE (strncat, "strncat is unportable - "
 357                  "use gnulib module strncat for portability");
 358 # endif
 359 #endif
 360
 361 /* Return a newly allocated copy of at most N bytes of STRING.  */
 362 #if @GNULIB_STRNDUP@
 363 # if @REPLACE_STRNDUP@
 364 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 365 #   undef strndup
 366 #   define strndup rpl_strndup
 367 #  endif
 368 _GL_FUNCDECL_RPL (strndup, char *, (char const *__string, size_t __n)
 369                                    _GL_ARG_NONNULL ((1)));
 370 _GL_CXXALIAS_RPL (strndup, char *, (char const *__string, size_t __n));
 371 # else
 372 #  if ! @HAVE_DECL_STRNDUP@
 373 _GL_FUNCDECL_SYS (strndup, char *, (char const *__string, size_t __n)
 374                                    _GL_ARG_NONNULL ((1)));
 375 #  endif
 376 _GL_CXXALIAS_SYS (strndup, char *, (char const *__string, size_t __n));
 377 # endif
 378 _GL_CXXALIASWARN (strndup);
 379 #elif defined GNULIB_POSIXCHECK
 380 # undef strndup
 381 # if HAVE_RAW_DECL_STRNDUP
 382 _GL_WARN_ON_USE (strndup, "strndup is unportable - "
 383                  "use gnulib module strndup for portability");
 384 # endif
 385 #endif
 386
 387 /* Find the length (number of bytes) of STRING, but scan at most
 388    MAXLEN bytes.  If no '\0' terminator is found in that many bytes,
 389    return MAXLEN.  */
 390 #if @GNULIB_STRNLEN@
 391 # if @REPLACE_STRNLEN@
 392 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 393 #   undef strnlen
 394 #   define strnlen rpl_strnlen
 395 #  endif
 396 _GL_FUNCDECL_RPL (strnlen, size_t, (char const *__string, size_t __maxlen)
 397                                    _GL_ATTRIBUTE_PURE
 398                                    _GL_ARG_NONNULL ((1)));
 399 _GL_CXXALIAS_RPL (strnlen, size_t, (char const *__string, size_t __maxlen));
 400 # else
 401 #  if ! @HAVE_DECL_STRNLEN@
 402 _GL_FUNCDECL_SYS (strnlen, size_t, (char const *__string, size_t __maxlen)
 403                                    _GL_ATTRIBUTE_PURE
 404                                    _GL_ARG_NONNULL ((1)));
 405 #  endif
 406 _GL_CXXALIAS_SYS (strnlen, size_t, (char const *__string, size_t __maxlen));
 407 # endif
 408 _GL_CXXALIASWARN (strnlen);
 409 #elif defined GNULIB_POSIXCHECK
 410 # undef strnlen
 411 # if HAVE_RAW_DECL_STRNLEN
 412 _GL_WARN_ON_USE (strnlen, "strnlen is unportable - "
 413                  "use gnulib module strnlen for portability");
 414 # endif
 415 #endif
 416
 417 #if defined GNULIB_POSIXCHECK
 418 /* strcspn() assumes the second argument is a list of single-byte characters.
 419    Even in this simple case, it does not work with multibyte strings if the
 420    locale encoding is GB18030 and one of the characters to be searched is a
 421    digit.  */
 422 # undef strcspn
 423 /* Assume strcspn is always declared.  */
 424 _GL_WARN_ON_USE (strcspn, "strcspn cannot work correctly on character strings "
 425                  "in multibyte locales - "
 426                  "use mbscspn if you care about internationalization");
 427 #endif
 428
 429 /* Find the first occurrence in S of any character in ACCEPT.  */
 430 #if @GNULIB_STRPBRK@
 431 # if ! @HAVE_STRPBRK@
 432 _GL_FUNCDECL_SYS (strpbrk, char *, (char const *__s, char const *__accept)
 433                                    _GL_ATTRIBUTE_PURE
 434                                    _GL_ARG_NONNULL ((1, 2)));
 435 # endif
 436   /* On some systems, this function is defined as an overloaded function:
 437        extern "C" { const char * strpbrk (const char *, const char *); }
 438        extern "C++" { char * strpbrk (char *, const char *); }  */
 439 _GL_CXXALIAS_SYS_CAST2 (strpbrk,
 440                         char *, (char const *__s, char const *__accept),
 441                         const char *, (char const *__s, char const *__accept));
 442 # if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 10) && !defined __UCLIBC__) \
 443      && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
 444 _GL_CXXALIASWARN1 (strpbrk, char *, (char *__s, char const *__accept));
 445 _GL_CXXALIASWARN1 (strpbrk, char const *,
 446                    (char const *__s, char const *__accept));
 447 # else
 448 _GL_CXXALIASWARN (strpbrk);
 449 # endif
 450 # if defined GNULIB_POSIXCHECK
 451 /* strpbrk() assumes the second argument is a list of single-byte characters.
 452    Even in this simple case, it does not work with multibyte strings if the
 453    locale encoding is GB18030 and one of the characters to be searched is a
 454    digit.  */
 455 #  undef strpbrk
 456 _GL_WARN_ON_USE (strpbrk, "strpbrk cannot work correctly on character strings "
 457                  "in multibyte locales - "
 458                  "use mbspbrk if you care about internationalization");
 459 # endif
 460 #elif defined GNULIB_POSIXCHECK
 461 # undef strpbrk
 462 # if HAVE_RAW_DECL_STRPBRK
 463 _GL_WARN_ON_USE (strpbrk, "strpbrk is unportable - "
 464                  "use gnulib module strpbrk for portability");
 465 # endif
 466 #endif
 467
 468 #if defined GNULIB_POSIXCHECK
 469 /* strspn() assumes the second argument is a list of single-byte characters.
 470    Even in this simple case, it cannot work with multibyte strings.  */
 471 # undef strspn
 472 /* Assume strspn is always declared.  */
 473 _GL_WARN_ON_USE (strspn, "strspn cannot work correctly on character strings "
 474                  "in multibyte locales - "
 475                  "use mbsspn if you care about internationalization");
 476 #endif
 477
 478 #if defined GNULIB_POSIXCHECK
 479 /* strrchr() does not work with multibyte strings if the locale encoding is
 480    GB18030 and the character to be searched is a digit.  */
 481 # undef strrchr
 482 /* Assume strrchr is always declared.  */
 483 _GL_WARN_ON_USE (strrchr, "strrchr cannot work correctly on character strings "
 484                  "in some multibyte locales - "
 485                  "use mbsrchr if you care about internationalization");
 486 #endif
 487
 488 /* Search the next delimiter (char listed in DELIM) starting at *STRINGP.
 489    If one is found, overwrite it with a NUL, and advance *STRINGP
 490    to point to the next char after it.  Otherwise, set *STRINGP to NULL.
 491    If *STRINGP was already NULL, nothing happens.
 492    Return the old value of *STRINGP.
 493
 494    This is a variant of strtok() that is multithread-safe and supports
 495    empty fields.
 496
 497    Caveat: It modifies the original string.
 498    Caveat: These functions cannot be used on constant strings.
 499    Caveat: The identity of the delimiting character is lost.
 500    Caveat: It doesn't work with multibyte strings unless all of the delimiter
 501            characters are ASCII characters < 0x30.
 502
 503    See also strtok_r().  */
 504 #if @GNULIB_STRSEP@
 505 # if ! @HAVE_STRSEP@
 506 _GL_FUNCDECL_SYS (strsep, char *,
 507                   (char **restrict __stringp, char const *restrict __delim)
 508                   _GL_ARG_NONNULL ((1, 2)));
 509 # endif
 510 _GL_CXXALIAS_SYS (strsep, char *,
 511                   (char **restrict __stringp, char const *restrict __delim));
 512 _GL_CXXALIASWARN (strsep);
 513 # if defined GNULIB_POSIXCHECK
 514 #  undef strsep
 515 _GL_WARN_ON_USE (strsep, "strsep cannot work correctly on character strings "
 516                  "in multibyte locales - "
 517                  "use mbssep if you care about internationalization");
 518 # endif
 519 #elif defined GNULIB_POSIXCHECK
 520 # undef strsep
 521 # if HAVE_RAW_DECL_STRSEP
 522 _GL_WARN_ON_USE (strsep, "strsep is unportable - "
 523                  "use gnulib module strsep for portability");
 524 # endif
 525 #endif
 526
 527 #if @GNULIB_STRSTR@
 528 # if @REPLACE_STRSTR@
 529 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 530 #   define strstr rpl_strstr
 531 #  endif
 532 _GL_FUNCDECL_RPL (strstr, char *, (const char *haystack, const char *needle)
 533                                   _GL_ATTRIBUTE_PURE
 534                                   _GL_ARG_NONNULL ((1, 2)));
 535 _GL_CXXALIAS_RPL (strstr, char *, (const char *haystack, const char *needle));
 536 # else
 537   /* On some systems, this function is defined as an overloaded function:
 538        extern "C++" { const char * strstr (const char *, const char *); }
 539        extern "C++" { char * strstr (char *, const char *); }  */
 540 _GL_CXXALIAS_SYS_CAST2 (strstr,
 541                         char *, (const char *haystack, const char *needle),
 542                         const char *, (const char *haystack, const char *needle));
 543 # endif
 544 # if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 10) && !defined __UCLIBC__) \
 545      && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
 546 _GL_CXXALIASWARN1 (strstr, char *, (char *haystack, const char *needle));
 547 _GL_CXXALIASWARN1 (strstr, const char *,
 548                    (const char *haystack, const char *needle));
 549 # else
 550 _GL_CXXALIASWARN (strstr);
 551 # endif
 552 #elif defined GNULIB_POSIXCHECK
 553 /* strstr() does not work with multibyte strings if the locale encoding is
 554    different from UTF-8:
 555    POSIX says that it operates on "strings", and "string" in POSIX is defined
 556    as a sequence of bytes, not of characters.  */
 557 # undef strstr
 558 /* Assume strstr is always declared.  */
 559 _GL_WARN_ON_USE (strstr, "strstr is quadratic on many systems, and cannot "
 560                  "work correctly on character strings in most "
 561                  "multibyte locales - "
 562                  "use mbsstr if you care about internationalization, "
 563                  "or use strstr if you care about speed");
 564 #endif
 565
 566 /* Find the first occurrence of NEEDLE in HAYSTACK, using case-insensitive
 567    comparison.  */
 568 #if @GNULIB_STRCASESTR@
 569 # if @REPLACE_STRCASESTR@
 570 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 571 #   define strcasestr rpl_strcasestr
 572 #  endif
 573 _GL_FUNCDECL_RPL (strcasestr, char *,
 574                   (const char *haystack, const char *needle)
 575                   _GL_ATTRIBUTE_PURE
 576                   _GL_ARG_NONNULL ((1, 2)));
 577 _GL_CXXALIAS_RPL (strcasestr, char *,
 578                   (const char *haystack, const char *needle));
 579 # else
 580 #  if ! @HAVE_STRCASESTR@
 581 _GL_FUNCDECL_SYS (strcasestr, char *,
 582                   (const char *haystack, const char *needle)
 583                   _GL_ATTRIBUTE_PURE
 584                   _GL_ARG_NONNULL ((1, 2)));
 585 #  endif
 586   /* On some systems, this function is defined as an overloaded function:
 587        extern "C++" { const char * strcasestr (const char *, const char *); }
 588        extern "C++" { char * strcasestr (char *, const char *); }  */
 589 _GL_CXXALIAS_SYS_CAST2 (strcasestr,
 590                         char *, (const char *haystack, const char *needle),
 591                         const char *, (const char *haystack, const char *needle));
 592 # endif
 593 # if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 10) && !defined __UCLIBC__) \
 594      && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
 595 _GL_CXXALIASWARN1 (strcasestr, char *, (char *haystack, const char *needle));
 596 _GL_CXXALIASWARN1 (strcasestr, const char *,
 597                    (const char *haystack, const char *needle));
 598 # else
 599 _GL_CXXALIASWARN (strcasestr);
 600 # endif
 601 #elif defined GNULIB_POSIXCHECK
 602 /* strcasestr() does not work with multibyte strings:
 603    It is a glibc extension, and glibc implements it only for unibyte
 604    locales.  */
 605 # undef strcasestr
 606 # if HAVE_RAW_DECL_STRCASESTR
 607 _GL_WARN_ON_USE (strcasestr, "strcasestr does work correctly on character "
 608                  "strings in multibyte locales - "
 609                  "use mbscasestr if you care about "
 610                  "internationalization, or use c-strcasestr if you want "
 611                  "a locale independent function");
 612 # endif
 613 #endif
 614
 615 /* Parse S into tokens separated by characters in DELIM.
 616    If S is NULL, the saved pointer in SAVE_PTR is used as
 617    the next starting point.  For example:
 618         char s[] = "-abc-=-def";
 619         char *sp;
 620         x = strtok_r(s, "-", &sp);      // x = "abc", sp = "=-def"
 621         x = strtok_r(NULL, "-=", &sp);  // x = "def", sp = NULL
 622         x = strtok_r(NULL, "=", &sp);   // x = NULL
 623                 // s = "abc\0-def\0"
 624
 625    This is a variant of strtok() that is multithread-safe.
 626
 627    For the POSIX documentation for this function, see:
 628    http://www.opengroup.org/susv3xsh/strtok.html
 629
 630    Caveat: It modifies the original string.
 631    Caveat: These functions cannot be used on constant strings.
 632    Caveat: The identity of the delimiting character is lost.
 633    Caveat: It doesn't work with multibyte strings unless all of the delimiter
 634            characters are ASCII characters < 0x30.
 635
 636    See also strsep().  */
 637 #if @GNULIB_STRTOK_R@
 638 # if @REPLACE_STRTOK_R@
 639 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 640 #   undef strtok_r
 641 #   define strtok_r rpl_strtok_r
 642 #  endif
 643 _GL_FUNCDECL_RPL (strtok_r, char *,
 644                   (char *restrict s, char const *restrict delim,
 645                    char **restrict save_ptr)
 646                   _GL_ARG_NONNULL ((2, 3)));
 647 _GL_CXXALIAS_RPL (strtok_r, char *,
 648                   (char *restrict s, char const *restrict delim,
 649                    char **restrict save_ptr));
 650 # else
 651 #  if @UNDEFINE_STRTOK_R@ || defined GNULIB_POSIXCHECK
 652 #   undef strtok_r
 653 #  endif
 654 #  if ! @HAVE_DECL_STRTOK_R@
 655 _GL_FUNCDECL_SYS (strtok_r, char *,
 656                   (char *restrict s, char const *restrict delim,
 657                    char **restrict save_ptr)
 658                   _GL_ARG_NONNULL ((2, 3)));
 659 #  endif
 660 _GL_CXXALIAS_SYS (strtok_r, char *,
 661                   (char *restrict s, char const *restrict delim,
 662                    char **restrict save_ptr));
 663 # endif
 664 _GL_CXXALIASWARN (strtok_r);
 665 # if defined GNULIB_POSIXCHECK
 666 _GL_WARN_ON_USE (strtok_r, "strtok_r cannot work correctly on character "
 667                  "strings in multibyte locales - "
 668                  "use mbstok_r if you care about internationalization");
 669 # endif
 670 #elif defined GNULIB_POSIXCHECK
 671 # undef strtok_r
 672 # if HAVE_RAW_DECL_STRTOK_R
 673 _GL_WARN_ON_USE (strtok_r, "strtok_r is unportable - "
 674                  "use gnulib module strtok_r for portability");
 675 # endif
 676 #endif
 677
 678
 679 /* The following functions are not specified by POSIX.  They are gnulib
 680    extensions.  */
 681
 682 #if @GNULIB_MBSLEN@
 683 /* Return the number of multibyte characters in the character string STRING.
 684    This considers multibyte characters, unlike strlen, which counts bytes.  */
 685 # ifdef __MirBSD__  /* MirBSD defines mbslen as a macro.  Override it.  */
 686 #  undef mbslen
 687 # endif
 688 # if @HAVE_MBSLEN@  /* AIX, OSF/1, MirBSD define mbslen already in libc.  */
 689 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 690 #   define mbslen rpl_mbslen
 691 #  endif
 692 _GL_FUNCDECL_RPL (mbslen, size_t, (const char *string) _GL_ARG_NONNULL ((1)));
 693 _GL_CXXALIAS_RPL (mbslen, size_t, (const char *string));
 694 # else
 695 _GL_FUNCDECL_SYS (mbslen, size_t, (const char *string) _GL_ARG_NONNULL ((1)));
 696 _GL_CXXALIAS_SYS (mbslen, size_t, (const char *string));
 697 # endif
 698 _GL_CXXALIASWARN (mbslen);
 699 #endif
 700
 701 #if @GNULIB_MBSNLEN@
 702 /* Return the number of multibyte characters in the character string starting
 703    at STRING and ending at STRING + LEN.  */
 704 _GL_EXTERN_C size_t mbsnlen (const char *string, size_t len)
 705      _GL_ARG_NONNULL ((1));
 706 #endif
 707
 708 #if @GNULIB_MBSCHR@
 709 /* Locate the first single-byte character C in the character string STRING,
 710    and return a pointer to it.  Return NULL if C is not found in STRING.
 711    Unlike strchr(), this function works correctly in multibyte locales with
 712    encodings such as GB18030.  */
 713 # if defined __hpux
 714 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 715 #   define mbschr rpl_mbschr /* avoid collision with HP-UX function */
 716 #  endif
 717 _GL_FUNCDECL_RPL (mbschr, char *, (const char *string, int c)
 718                                   _GL_ARG_NONNULL ((1)));
 719 _GL_CXXALIAS_RPL (mbschr, char *, (const char *string, int c));
 720 # else
 721 _GL_FUNCDECL_SYS (mbschr, char *, (const char *string, int c)
 722                                   _GL_ARG_NONNULL ((1)));
 723 _GL_CXXALIAS_SYS (mbschr, char *, (const char *string, int c));
 724 # endif
 725 _GL_CXXALIASWARN (mbschr);
 726 #endif
 727
 728 #if @GNULIB_MBSRCHR@
 729 /* Locate the last single-byte character C in the character string STRING,
 730    and return a pointer to it.  Return NULL if C is not found in STRING.
 731    Unlike strrchr(), this function works correctly in multibyte locales with
 732    encodings such as GB18030.  */
 733 # if defined __hpux
 734 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 735 #   define mbsrchr rpl_mbsrchr /* avoid collision with HP-UX function */
 736 #  endif
 737 _GL_FUNCDECL_RPL (mbsrchr, char *, (const char *string, int c)
 738                                    _GL_ARG_NONNULL ((1)));
 739 _GL_CXXALIAS_RPL (mbsrchr, char *, (const char *string, int c));
 740 # else
 741 _GL_FUNCDECL_SYS (mbsrchr, char *, (const char *string, int c)
 742                                    _GL_ARG_NONNULL ((1)));
 743 _GL_CXXALIAS_SYS (mbsrchr, char *, (const char *string, int c));
 744 # endif
 745 _GL_CXXALIASWARN (mbsrchr);
 746 #endif
 747
 748 #if @GNULIB_MBSSTR@
 749 /* Find the first occurrence of the character string NEEDLE in the character
 750    string HAYSTACK.  Return NULL if NEEDLE is not found in HAYSTACK.
 751    Unlike strstr(), this function works correctly in multibyte locales with
 752    encodings different from UTF-8.  */
 753 _GL_EXTERN_C char * mbsstr (const char *haystack, const char *needle)
 754      _GL_ARG_NONNULL ((1, 2));
 755 #endif
 756
 757 #if @GNULIB_MBSCASECMP@
 758 /* Compare the character strings S1 and S2, ignoring case, returning less than,
 759    equal to or greater than zero if S1 is lexicographically less than, equal to
 760    or greater than S2.
 761    Note: This function may, in multibyte locales, return 0 for strings of
 762    different lengths!
 763    Unlike strcasecmp(), this function works correctly in multibyte locales.  */
 764 _GL_EXTERN_C int mbscasecmp (const char *s1, const char *s2)
 765      _GL_ARG_NONNULL ((1, 2));
 766 #endif
 767
 768 #if @GNULIB_MBSNCASECMP@
 769 /* Compare the initial segment of the character string S1 consisting of at most
 770    N characters with the initial segment of the character string S2 consisting
 771    of at most N characters, ignoring case, returning less than, equal to or
 772    greater than zero if the initial segment of S1 is lexicographically less
 773    than, equal to or greater than the initial segment of S2.
 774    Note: This function may, in multibyte locales, return 0 for initial segments
 775    of different lengths!
 776    Unlike strncasecmp(), this function works correctly in multibyte locales.
 777    But beware that N is not a byte count but a character count!  */
 778 _GL_EXTERN_C int mbsncasecmp (const char *s1, const char *s2, size_t n)
 779      _GL_ARG_NONNULL ((1, 2));
 780 #endif
 781
 782 #if @GNULIB_MBSPCASECMP@
 783 /* Compare the initial segment of the character string STRING consisting of
 784    at most mbslen (PREFIX) characters with the character string PREFIX,
 785    ignoring case.  If the two match, return a pointer to the first byte
 786    after this prefix in STRING.  Otherwise, return NULL.
 787    Note: This function may, in multibyte locales, return non-NULL if STRING
 788    is of smaller length than PREFIX!
 789    Unlike strncasecmp(), this function works correctly in multibyte
 790    locales.  */
 791 _GL_EXTERN_C char * mbspcasecmp (const char *string, const char *prefix)
 792      _GL_ARG_NONNULL ((1, 2));
 793 #endif
 794
 795 #if @GNULIB_MBSCASESTR@
 796 /* Find the first occurrence of the character string NEEDLE in the character
 797    string HAYSTACK, using case-insensitive comparison.
 798    Note: This function may, in multibyte locales, return success even if
 799    strlen (haystack) < strlen (needle) !
 800    Unlike strcasestr(), this function works correctly in multibyte locales.  */
 801 _GL_EXTERN_C char * mbscasestr (const char *haystack, const char *needle)
 802      _GL_ARG_NONNULL ((1, 2));
 803 #endif
 804
 805 #if @GNULIB_MBSCSPN@
 806 /* Find the first occurrence in the character string STRING of any character
 807    in the character string ACCEPT.  Return the number of bytes from the
 808    beginning of the string to this occurrence, or to the end of the string
 809    if none exists.
 810    Unlike strcspn(), this function works correctly in multibyte locales.  */
 811 _GL_EXTERN_C size_t mbscspn (const char *string, const char *accept)
 812      _GL_ARG_NONNULL ((1, 2));
 813 #endif
 814
 815 #if @GNULIB_MBSPBRK@
 816 /* Find the first occurrence in the character string STRING of any character
 817    in the character string ACCEPT.  Return the pointer to it, or NULL if none
 818    exists.
 819    Unlike strpbrk(), this function works correctly in multibyte locales.  */
 820 # if defined __hpux
 821 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 822 #   define mbspbrk rpl_mbspbrk /* avoid collision with HP-UX function */
 823 #  endif
 824 _GL_FUNCDECL_RPL (mbspbrk, char *, (const char *string, const char *accept)
 825                                    _GL_ARG_NONNULL ((1, 2)));
 826 _GL_CXXALIAS_RPL (mbspbrk, char *, (const char *string, const char *accept));
 827 # else
 828 _GL_FUNCDECL_SYS (mbspbrk, char *, (const char *string, const char *accept)
 829                                    _GL_ARG_NONNULL ((1, 2)));
 830 _GL_CXXALIAS_SYS (mbspbrk, char *, (const char *string, const char *accept));
 831 # endif
 832 _GL_CXXALIASWARN (mbspbrk);
 833 #endif
 834
 835 #if @GNULIB_MBSSPN@
 836 /* Find the first occurrence in the character string STRING of any character
 837    not in the character string REJECT.  Return the number of bytes from the
 838    beginning of the string to this occurrence, or to the end of the string
 839    if none exists.
 840    Unlike strspn(), this function works correctly in multibyte locales.  */
 841 _GL_EXTERN_C size_t mbsspn (const char *string, const char *reject)
 842      _GL_ARG_NONNULL ((1, 2));
 843 #endif
 844
 845 #if @GNULIB_MBSSEP@
 846 /* Search the next delimiter (multibyte character listed in the character
 847    string DELIM) starting at the character string *STRINGP.
 848    If one is found, overwrite it with a NUL, and advance *STRINGP to point
 849    to the next multibyte character after it.  Otherwise, set *STRINGP to NULL.
 850    If *STRINGP was already NULL, nothing happens.
 851    Return the old value of *STRINGP.
 852
 853    This is a variant of mbstok_r() that supports empty fields.
 854
 855    Caveat: It modifies the original string.
 856    Caveat: These functions cannot be used on constant strings.
 857    Caveat: The identity of the delimiting character is lost.
 858
 859    See also mbstok_r().  */
 860 _GL_EXTERN_C char * mbssep (char **stringp, const char *delim)
 861      _GL_ARG_NONNULL ((1, 2));
 862 #endif
 863
 864 #if @GNULIB_MBSTOK_R@
 865 /* Parse the character string STRING into tokens separated by characters in
 866    the character string DELIM.
 867    If STRING is NULL, the saved pointer in SAVE_PTR is used as
 868    the next starting point.  For example:
 869         char s[] = "-abc-=-def";
 870         char *sp;
 871         x = mbstok_r(s, "-", &sp);      // x = "abc", sp = "=-def"
 872         x = mbstok_r(NULL, "-=", &sp);  // x = "def", sp = NULL
 873         x = mbstok_r(NULL, "=", &sp);   // x = NULL
 874                 // s = "abc\0-def\0"
 875
 876    Caveat: It modifies the original string.
 877    Caveat: These functions cannot be used on constant strings.
 878    Caveat: The identity of the delimiting character is lost.
 879
 880    See also mbssep().  */
 881 _GL_EXTERN_C char * mbstok_r (char *string, const char *delim, char **save_ptr)
 882      _GL_ARG_NONNULL ((2, 3));
 883 #endif
 884
 885 /* Map any int, typically from errno, into an error message.  */
 886 #if @GNULIB_STRERROR@
 887 # if @REPLACE_STRERROR@
 888 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 889 #   undef strerror
 890 #   define strerror rpl_strerror
 891 #  endif
 892 _GL_FUNCDECL_RPL (strerror, char *, (int));
 893 _GL_CXXALIAS_RPL (strerror, char *, (int));
 894 # else
 895 _GL_CXXALIAS_SYS (strerror, char *, (int));
 896 # endif
 897 _GL_CXXALIASWARN (strerror);
 898 #elif defined GNULIB_POSIXCHECK
 899 # undef strerror
 900 /* Assume strerror is always declared.  */
 901 _GL_WARN_ON_USE (strerror, "strerror is unportable - "
 902                  "use gnulib module strerror to guarantee non-NULL result");
 903 #endif
 904
 905 /* Map any int, typically from errno, into an error message.  Multithread-safe.
 906    Uses the POSIX declaration, not the glibc declaration.  */
 907 #if @GNULIB_STRERROR_R@
 908 # if @REPLACE_STRERROR_R@
 909 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 910 #   undef strerror_r
 911 #   define strerror_r rpl_strerror_r
 912 #  endif
 913 _GL_FUNCDECL_RPL (strerror_r, int, (int errnum, char *buf, size_t buflen)
 914                                    _GL_ARG_NONNULL ((2)));
 915 _GL_CXXALIAS_RPL (strerror_r, int, (int errnum, char *buf, size_t buflen));
 916 # else
 917 #  if !@HAVE_DECL_STRERROR_R@
 918 _GL_FUNCDECL_SYS (strerror_r, int, (int errnum, char *buf, size_t buflen)
 919                                    _GL_ARG_NONNULL ((2)));
 920 #  endif
 921 _GL_CXXALIAS_SYS (strerror_r, int, (int errnum, char *buf, size_t buflen));
 922 # endif
 923 # if @HAVE_DECL_STRERROR_R@
 924 _GL_CXXALIASWARN (strerror_r);
 925 # endif
 926 #elif defined GNULIB_POSIXCHECK
 927 # undef strerror_r
 928 # if HAVE_RAW_DECL_STRERROR_R
 929 _GL_WARN_ON_USE (strerror_r, "strerror_r is unportable - "
 930                  "use gnulib module strerror_r-posix for portability");
 931 # endif
 932 #endif
 933
 934 #if @GNULIB_STRSIGNAL@
 935 # if @REPLACE_STRSIGNAL@
 936 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 937 #   define strsignal rpl_strsignal
 938 #  endif
 939 _GL_FUNCDECL_RPL (strsignal, char *, (int __sig));
 940 _GL_CXXALIAS_RPL (strsignal, char *, (int __sig));
 941 # else
 942 #  if ! @HAVE_DECL_STRSIGNAL@
 943 _GL_FUNCDECL_SYS (strsignal, char *, (int __sig));
 944 #  endif
 945 /* Need to cast, because on Cygwin 1.5.x systems, the return type is
 946    'const char *'.  */
 947 _GL_CXXALIAS_SYS_CAST (strsignal, char *, (int __sig));
 948 # endif
 949 _GL_CXXALIASWARN (strsignal);
 950 #elif defined GNULIB_POSIXCHECK
 951 # undef strsignal
 952 # if HAVE_RAW_DECL_STRSIGNAL
 953 _GL_WARN_ON_USE (strsignal, "strsignal is unportable - "
 954                  "use gnulib module strsignal for portability");
 955 # endif
 956 #endif
 957
 958 #if @GNULIB_STRVERSCMP@
 959 # if !@HAVE_STRVERSCMP@
 960 _GL_FUNCDECL_SYS (strverscmp, int, (const char *, const char *)
 961                                    _GL_ARG_NONNULL ((1, 2)));
 962 # endif
 963 _GL_CXXALIAS_SYS (strverscmp, int, (const char *, const char *));
 964 _GL_CXXALIASWARN (strverscmp);
 965 #elif defined GNULIB_POSIXCHECK
 966 # undef strverscmp
 967 # if HAVE_RAW_DECL_STRVERSCMP
 968 _GL_WARN_ON_USE (strverscmp, "strverscmp is unportable - "
 969                  "use gnulib module strverscmp for portability");
 970 # endif
 971 #endif
 972
 973
 974 #endif /* _GL_STRING_H */
 975 #endif /* _GL_STRING_H */