lib/string.in.h

   1 /* A GNU-like <string.h>.
   2
   3    Copyright (C) 1995-1996, 2001-2011 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 /* The __attribute__ feature is available in gcc versions 2.5 and later.
  41    The attribute __pure__ was added in gcc 2.96.  */
  42 #if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 96)
  43 # define _GL_ATTRIBUTE_PURE __attribute__ ((__pure__))
  44 #else
  45 # define _GL_ATTRIBUTE_PURE /* empty */
  46 #endif
  47
  48 /* NetBSD 5.0 declares strsignal in <unistd.h>, not in <string.h>.  */
  49 /* But in any case avoid namespace pollution on glibc systems.  */
  50 #if (@GNULIB_STRSIGNAL@ || defined GNULIB_POSIXCHECK) && defined __NetBSD__ \
  51     && ! defined __GLIBC__
  52 # include <unistd.h>
  53 #endif
  54
  55 /* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
  56
  57 /* The definition of _GL_ARG_NONNULL is copied here.  */
  58
  59 /* The definition of _GL_WARN_ON_USE is copied here.  */
  60
  61
  62 /* Return the first instance of C within N bytes of S, or NULL.  */
  63 #if @GNULIB_MEMCHR@
  64 # if @REPLACE_MEMCHR@
  65 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
  66 #   define memchr rpl_memchr
  67 #  endif
  68 _GL_FUNCDECL_RPL (memchr, void *, (void const *__s, int __c, size_t __n)
  69                                   _GL_ATTRIBUTE_PURE
  70                                   _GL_ARG_NONNULL ((1)));
  71 _GL_CXXALIAS_RPL (memchr, void *, (void const *__s, int __c, size_t __n));
  72 # else
  73 #  if ! @HAVE_MEMCHR@
  74 _GL_FUNCDECL_SYS (memchr, void *, (void const *__s, int __c, size_t __n)
  75                                   _GL_ATTRIBUTE_PURE
  76                                   _GL_ARG_NONNULL ((1)));
  77 #  endif
  78   /* On some systems, this function is defined as an overloaded function:
  79        extern "C" { const void * std::memchr (const void *, int, size_t); }
  80        extern "C++" { void * std::memchr (void *, int, size_t); }  */
  81 _GL_CXXALIAS_SYS_CAST2 (memchr,
  82                         void *, (void const *__s, int __c, size_t __n),
  83                         void const *, (void const *__s, int __c, size_t __n));
  84 # endif
  85 # if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 10) && !defined __UCLIBC__) \
  86      && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
  87 _GL_CXXALIASWARN1 (memchr, void *, (void *__s, int __c, size_t __n));
  88 _GL_CXXALIASWARN1 (memchr, void const *,
  89                    (void const *__s, int __c, size_t __n));
  90 # else
  91 _GL_CXXALIASWARN (memchr);
  92 # endif
  93 #elif defined GNULIB_POSIXCHECK
  94 # undef memchr
  95 /* Assume memchr is always declared.  */
  96 _GL_WARN_ON_USE (memchr, "memchr has platform-specific bugs - "
  97                  "use gnulib module memchr for portability" );
  98 #endif
  99
 100 /* Return the first occurrence of NEEDLE in HAYSTACK.  */
 101 #if @GNULIB_MEMMEM@
 102 # if @REPLACE_MEMMEM@
 103 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 104 #   define memmem rpl_memmem
 105 #  endif
 106 _GL_FUNCDECL_RPL (memmem, void *,
 107                   (void const *__haystack, size_t __haystack_len,
 108                    void const *__needle, size_t __needle_len)
 109                   _GL_ATTRIBUTE_PURE
 110                   _GL_ARG_NONNULL ((1, 3)));
 111 _GL_CXXALIAS_RPL (memmem, void *,
 112                   (void const *__haystack, size_t __haystack_len,
 113                    void const *__needle, size_t __needle_len));
 114 # else
 115 #  if ! @HAVE_DECL_MEMMEM@
 116 _GL_FUNCDECL_SYS (memmem, void *,
 117                   (void const *__haystack, size_t __haystack_len,
 118                    void const *__needle, size_t __needle_len)
 119                   _GL_ATTRIBUTE_PURE
 120                   _GL_ARG_NONNULL ((1, 3)));
 121 #  endif
 122 _GL_CXXALIAS_SYS (memmem, void *,
 123                   (void const *__haystack, size_t __haystack_len,
 124                    void const *__needle, size_t __needle_len));
 125 # endif
 126 _GL_CXXALIASWARN (memmem);
 127 #elif defined GNULIB_POSIXCHECK
 128 # undef memmem
 129 # if HAVE_RAW_DECL_MEMMEM
 130 _GL_WARN_ON_USE (memmem, "memmem is unportable and often quadratic - "
 131                  "use gnulib module memmem-simple for portability, "
 132                  "and module memmem for speed" );
 133 # endif
 134 #endif
 135
 136 /* Copy N bytes of SRC to DEST, return pointer to bytes after the
 137    last written byte.  */
 138 #if @GNULIB_MEMPCPY@
 139 # if ! @HAVE_MEMPCPY@
 140 _GL_FUNCDECL_SYS (mempcpy, void *,
 141                   (void *restrict __dest, void const *restrict __src,
 142                    size_t __n)
 143                   _GL_ARG_NONNULL ((1, 2)));
 144 # endif
 145 _GL_CXXALIAS_SYS (mempcpy, void *,
 146                   (void *restrict __dest, void const *restrict __src,
 147                    size_t __n));
 148 _GL_CXXALIASWARN (mempcpy);
 149 #elif defined GNULIB_POSIXCHECK
 150 # undef mempcpy
 151 # if HAVE_RAW_DECL_MEMPCPY
 152 _GL_WARN_ON_USE (mempcpy, "mempcpy is unportable - "
 153                  "use gnulib module mempcpy for portability");
 154 # endif
 155 #endif
 156
 157 /* Search backwards through a block for a byte (specified as an int).  */
 158 #if @GNULIB_MEMRCHR@
 159 # if ! @HAVE_DECL_MEMRCHR@
 160 _GL_FUNCDECL_SYS (memrchr, void *, (void const *, int, size_t)
 161                                    _GL_ATTRIBUTE_PURE
 162                                    _GL_ARG_NONNULL ((1)));
 163 # endif
 164   /* On some systems, this function is defined as an overloaded function:
 165        extern "C++" { const void * std::memrchr (const void *, int, size_t); }
 166        extern "C++" { void * std::memrchr (void *, int, size_t); }  */
 167 _GL_CXXALIAS_SYS_CAST2 (memrchr,
 168                         void *, (void const *, int, size_t),
 169                         void const *, (void const *, int, size_t));
 170 # if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 10) && !defined __UCLIBC__) \
 171      && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
 172 _GL_CXXALIASWARN1 (memrchr, void *, (void *, int, size_t));
 173 _GL_CXXALIASWARN1 (memrchr, void const *, (void const *, int, size_t));
 174 # else
 175 _GL_CXXALIASWARN (memrchr);
 176 # endif
 177 #elif defined GNULIB_POSIXCHECK
 178 # undef memrchr
 179 # if HAVE_RAW_DECL_MEMRCHR
 180 _GL_WARN_ON_USE (memrchr, "memrchr is unportable - "
 181                  "use gnulib module memrchr for portability");
 182 # endif
 183 #endif
 184
 185 /* Find the first occurrence of C in S.  More efficient than
 186    memchr(S,C,N), at the expense of undefined behavior if C does not
 187    occur within N bytes.  */
 188 #if @GNULIB_RAWMEMCHR@
 189 # if ! @HAVE_RAWMEMCHR@
 190 _GL_FUNCDECL_SYS (rawmemchr, void *, (void const *__s, int __c_in)
 191                                      _GL_ATTRIBUTE_PURE
 192                                      _GL_ARG_NONNULL ((1)));
 193 # endif
 194   /* On some systems, this function is defined as an overloaded function:
 195        extern "C++" { const void * std::rawmemchr (const void *, int); }
 196        extern "C++" { void * std::rawmemchr (void *, int); }  */
 197 _GL_CXXALIAS_SYS_CAST2 (rawmemchr,
 198                         void *, (void const *__s, int __c_in),
 199                         void const *, (void const *__s, int __c_in));
 200 # if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 10) && !defined __UCLIBC__) \
 201      && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
 202 _GL_CXXALIASWARN1 (rawmemchr, void *, (void *__s, int __c_in));
 203 _GL_CXXALIASWARN1 (rawmemchr, void const *, (void const *__s, int __c_in));
 204 # else
 205 _GL_CXXALIASWARN (rawmemchr);
 206 # endif
 207 #elif defined GNULIB_POSIXCHECK
 208 # undef rawmemchr
 209 # if HAVE_RAW_DECL_RAWMEMCHR
 210 _GL_WARN_ON_USE (rawmemchr, "rawmemchr is unportable - "
 211                  "use gnulib module rawmemchr for portability");
 212 # endif
 213 #endif
 214
 215 /* Copy SRC to DST, returning the address of the terminating '\0' in DST.  */
 216 #if @GNULIB_STPCPY@
 217 # if ! @HAVE_STPCPY@
 218 _GL_FUNCDECL_SYS (stpcpy, char *,
 219                   (char *restrict __dst, char const *restrict __src)
 220                   _GL_ARG_NONNULL ((1, 2)));
 221 # endif
 222 _GL_CXXALIAS_SYS (stpcpy, char *,
 223                   (char *restrict __dst, char const *restrict __src));
 224 _GL_CXXALIASWARN (stpcpy);
 225 #elif defined GNULIB_POSIXCHECK
 226 # undef stpcpy
 227 # if HAVE_RAW_DECL_STPCPY
 228 _GL_WARN_ON_USE (stpcpy, "stpcpy is unportable - "
 229                  "use gnulib module stpcpy for portability");
 230 # endif
 231 #endif
 232
 233 /* Copy no more than N bytes of SRC to DST, returning a pointer past the
 234    last non-NUL byte written into DST.  */
 235 #if @GNULIB_STPNCPY@
 236 # if @REPLACE_STPNCPY@
 237 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 238 #   undef stpncpy
 239 #   define stpncpy rpl_stpncpy
 240 #  endif
 241 _GL_FUNCDECL_RPL (stpncpy, char *,
 242                   (char *restrict __dst, char const *restrict __src,
 243                    size_t __n)
 244                   _GL_ARG_NONNULL ((1, 2)));
 245 _GL_CXXALIAS_RPL (stpncpy, char *,
 246                   (char *restrict __dst, char const *restrict __src,
 247                    size_t __n));
 248 # else
 249 #  if ! @HAVE_STPNCPY@
 250 _GL_FUNCDECL_SYS (stpncpy, char *,
 251                   (char *restrict __dst, char const *restrict __src,
 252                    size_t __n)
 253                   _GL_ARG_NONNULL ((1, 2)));
 254 #  endif
 255 _GL_CXXALIAS_SYS (stpncpy, char *,
 256                   (char *restrict __dst, char const *restrict __src,
 257                    size_t __n));
 258 # endif
 259 _GL_CXXALIASWARN (stpncpy);
 260 #elif defined GNULIB_POSIXCHECK
 261 # undef stpncpy
 262 # if HAVE_RAW_DECL_STPNCPY
 263 _GL_WARN_ON_USE (stpncpy, "stpncpy is unportable - "
 264                  "use gnulib module stpncpy for portability");
 265 # endif
 266 #endif
 267
 268 #if defined GNULIB_POSIXCHECK
 269 /* strchr() does not work with multibyte strings if the locale encoding is
 270    GB18030 and the character to be searched is a digit.  */
 271 # undef strchr
 272 /* Assume strchr is always declared.  */
 273 _GL_WARN_ON_USE (strchr, "strchr cannot work correctly on character strings "
 274                  "in some multibyte locales - "
 275                  "use mbschr if you care about internationalization");
 276 #endif
 277
 278 /* Find the first occurrence of C in S or the final NUL byte.  */
 279 #if @GNULIB_STRCHRNUL@
 280 # if ! @HAVE_STRCHRNUL@
 281 _GL_FUNCDECL_SYS (strchrnul, char *, (char const *__s, int __c_in)
 282                                      _GL_ATTRIBUTE_PURE
 283                                      _GL_ARG_NONNULL ((1)));
 284 # endif
 285   /* On some systems, this function is defined as an overloaded function:
 286        extern "C++" { const char * std::strchrnul (const char *, int); }
 287        extern "C++" { char * std::strchrnul (char *, int); }  */
 288 _GL_CXXALIAS_SYS_CAST2 (strchrnul,
 289                         char *, (char const *__s, int __c_in),
 290                         char const *, (char const *__s, int __c_in));
 291 # if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 10) && !defined __UCLIBC__) \
 292      && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
 293 _GL_CXXALIASWARN1 (strchrnul, char *, (char *__s, int __c_in));
 294 _GL_CXXALIASWARN1 (strchrnul, char const *, (char const *__s, int __c_in));
 295 # else
 296 _GL_CXXALIASWARN (strchrnul);
 297 # endif
 298 #elif defined GNULIB_POSIXCHECK
 299 # undef strchrnul
 300 # if HAVE_RAW_DECL_STRCHRNUL
 301 _GL_WARN_ON_USE (strchrnul, "strchrnul is unportable - "
 302                  "use gnulib module strchrnul for portability");
 303 # endif
 304 #endif
 305
 306 /* Duplicate S, returning an identical malloc'd string.  */
 307 #if @GNULIB_STRDUP@
 308 # if @REPLACE_STRDUP@
 309 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 310 #   undef strdup
 311 #   define strdup rpl_strdup
 312 #  endif
 313 _GL_FUNCDECL_RPL (strdup, char *, (char const *__s) _GL_ARG_NONNULL ((1)));
 314 _GL_CXXALIAS_RPL (strdup, char *, (char const *__s));
 315 # else
 316 #  if defined __cplusplus && defined GNULIB_NAMESPACE && defined strdup
 317     /* strdup exists as a function and as a macro.  Get rid of the macro.  */
 318 #   undef strdup
 319 #  endif
 320 #  if !(@HAVE_DECL_STRDUP@ || defined strdup)
 321 _GL_FUNCDECL_SYS (strdup, char *, (char const *__s) _GL_ARG_NONNULL ((1)));
 322 #  endif
 323 _GL_CXXALIAS_SYS (strdup, char *, (char const *__s));
 324 # endif
 325 _GL_CXXALIASWARN (strdup);
 326 #elif defined GNULIB_POSIXCHECK
 327 # undef strdup
 328 # if HAVE_RAW_DECL_STRDUP
 329 _GL_WARN_ON_USE (strdup, "strdup is unportable - "
 330                  "use gnulib module strdup for portability");
 331 # endif
 332 #endif
 333
 334 /* Append no more than N characters from SRC onto DEST.  */
 335 #if @GNULIB_STRNCAT@
 336 # if @REPLACE_STRNCAT@
 337 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 338 #   undef strncat
 339 #   define strncat rpl_strncat
 340 #  endif
 341 _GL_FUNCDECL_RPL (strncat, char *, (char *dest, const char *src, size_t n)
 342                                    _GL_ARG_NONNULL ((1, 2)));
 343 _GL_CXXALIAS_RPL (strncat, char *, (char *dest, const char *src, size_t n));
 344 # else
 345 _GL_CXXALIAS_SYS (strncat, char *, (char *dest, const char *src, size_t n));
 346 # endif
 347 _GL_CXXALIASWARN (strncat);
 348 #elif defined GNULIB_POSIXCHECK
 349 # undef strncat
 350 # if HAVE_RAW_DECL_STRNCAT
 351 _GL_WARN_ON_USE (strncat, "strncat is unportable - "
 352                  "use gnulib module strncat for portability");
 353 # endif
 354 #endif
 355
 356 /* Return a newly allocated copy of at most N bytes of STRING.  */
 357 #if @GNULIB_STRNDUP@
 358 # if @REPLACE_STRNDUP@
 359 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 360 #   undef strndup
 361 #   define strndup rpl_strndup
 362 #  endif
 363 _GL_FUNCDECL_RPL (strndup, char *, (char const *__string, size_t __n)
 364                                    _GL_ARG_NONNULL ((1)));
 365 _GL_CXXALIAS_RPL (strndup, char *, (char const *__string, size_t __n));
 366 # else
 367 #  if ! @HAVE_DECL_STRNDUP@
 368 _GL_FUNCDECL_SYS (strndup, char *, (char const *__string, size_t __n)
 369                                    _GL_ARG_NONNULL ((1)));
 370 #  endif
 371 _GL_CXXALIAS_SYS (strndup, char *, (char const *__string, size_t __n));
 372 # endif
 373 _GL_CXXALIASWARN (strndup);
 374 #elif defined GNULIB_POSIXCHECK
 375 # undef strndup
 376 # if HAVE_RAW_DECL_STRNDUP
 377 _GL_WARN_ON_USE (strndup, "strndup is unportable - "
 378                  "use gnulib module strndup for portability");
 379 # endif
 380 #endif
 381
 382 /* Find the length (number of bytes) of STRING, but scan at most
 383    MAXLEN bytes.  If no '\0' terminator is found in that many bytes,
 384    return MAXLEN.  */
 385 #if @GNULIB_STRNLEN@
 386 # if @REPLACE_STRNLEN@
 387 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 388 #   undef strnlen
 389 #   define strnlen rpl_strnlen
 390 #  endif
 391 _GL_FUNCDECL_RPL (strnlen, size_t, (char const *__string, size_t __maxlen)
 392                                    _GL_ATTRIBUTE_PURE
 393                                    _GL_ARG_NONNULL ((1)));
 394 _GL_CXXALIAS_RPL (strnlen, size_t, (char const *__string, size_t __maxlen));
 395 # else
 396 #  if ! @HAVE_DECL_STRNLEN@
 397 _GL_FUNCDECL_SYS (strnlen, size_t, (char const *__string, size_t __maxlen)
 398                                    _GL_ATTRIBUTE_PURE
 399                                    _GL_ARG_NONNULL ((1)));
 400 #  endif
 401 _GL_CXXALIAS_SYS (strnlen, size_t, (char const *__string, size_t __maxlen));
 402 # endif
 403 _GL_CXXALIASWARN (strnlen);
 404 #elif defined GNULIB_POSIXCHECK
 405 # undef strnlen
 406 # if HAVE_RAW_DECL_STRNLEN
 407 _GL_WARN_ON_USE (strnlen, "strnlen is unportable - "
 408                  "use gnulib module strnlen for portability");
 409 # endif
 410 #endif
 411
 412 #if defined GNULIB_POSIXCHECK
 413 /* strcspn() assumes the second argument is a list of single-byte characters.
 414    Even in this simple case, it does not work with multibyte strings if the
 415    locale encoding is GB18030 and one of the characters to be searched is a
 416    digit.  */
 417 # undef strcspn
 418 /* Assume strcspn is always declared.  */
 419 _GL_WARN_ON_USE (strcspn, "strcspn cannot work correctly on character strings "
 420                  "in multibyte locales - "
 421                  "use mbscspn if you care about internationalization");
 422 #endif
 423
 424 /* Find the first occurrence in S of any character in ACCEPT.  */
 425 #if @GNULIB_STRPBRK@
 426 # if ! @HAVE_STRPBRK@
 427 _GL_FUNCDECL_SYS (strpbrk, char *, (char const *__s, char const *__accept)
 428                                    _GL_ATTRIBUTE_PURE
 429                                    _GL_ARG_NONNULL ((1, 2)));
 430 # endif
 431   /* On some systems, this function is defined as an overloaded function:
 432        extern "C" { const char * strpbrk (const char *, const char *); }
 433        extern "C++" { char * strpbrk (char *, const char *); }  */
 434 _GL_CXXALIAS_SYS_CAST2 (strpbrk,
 435                         char *, (char const *__s, char const *__accept),
 436                         const char *, (char const *__s, char const *__accept));
 437 # if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 10) && !defined __UCLIBC__) \
 438      && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
 439 _GL_CXXALIASWARN1 (strpbrk, char *, (char *__s, char const *__accept));
 440 _GL_CXXALIASWARN1 (strpbrk, char const *,
 441                    (char const *__s, char const *__accept));
 442 # else
 443 _GL_CXXALIASWARN (strpbrk);
 444 # endif
 445 # if defined GNULIB_POSIXCHECK
 446 /* strpbrk() assumes the second argument is a list of single-byte characters.
 447    Even in this simple case, it does not work with multibyte strings if the
 448    locale encoding is GB18030 and one of the characters to be searched is a
 449    digit.  */
 450 #  undef strpbrk
 451 _GL_WARN_ON_USE (strpbrk, "strpbrk cannot work correctly on character strings "
 452                  "in multibyte locales - "
 453                  "use mbspbrk if you care about internationalization");
 454 # endif
 455 #elif defined GNULIB_POSIXCHECK
 456 # undef strpbrk
 457 # if HAVE_RAW_DECL_STRPBRK
 458 _GL_WARN_ON_USE (strpbrk, "strpbrk is unportable - "
 459                  "use gnulib module strpbrk for portability");
 460 # endif
 461 #endif
 462
 463 #if defined GNULIB_POSIXCHECK
 464 /* strspn() assumes the second argument is a list of single-byte characters.
 465    Even in this simple case, it cannot work with multibyte strings.  */
 466 # undef strspn
 467 /* Assume strspn is always declared.  */
 468 _GL_WARN_ON_USE (strspn, "strspn cannot work correctly on character strings "
 469                  "in multibyte locales - "
 470                  "use mbsspn if you care about internationalization");
 471 #endif
 472
 473 #if defined GNULIB_POSIXCHECK
 474 /* strrchr() does not work with multibyte strings if the locale encoding is
 475    GB18030 and the character to be searched is a digit.  */
 476 # undef strrchr
 477 /* Assume strrchr is always declared.  */
 478 _GL_WARN_ON_USE (strrchr, "strrchr cannot work correctly on character strings "
 479                  "in some multibyte locales - "
 480                  "use mbsrchr if you care about internationalization");
 481 #endif
 482
 483 /* Search the next delimiter (char listed in DELIM) starting at *STRINGP.
 484    If one is found, overwrite it with a NUL, and advance *STRINGP
 485    to point to the next char after it.  Otherwise, set *STRINGP to NULL.
 486    If *STRINGP was already NULL, nothing happens.
 487    Return the old value of *STRINGP.
 488
 489    This is a variant of strtok() that is multithread-safe and supports
 490    empty fields.
 491
 492    Caveat: It modifies the original string.
 493    Caveat: These functions cannot be used on constant strings.
 494    Caveat: The identity of the delimiting character is lost.
 495    Caveat: It doesn't work with multibyte strings unless all of the delimiter
 496            characters are ASCII characters < 0x30.
 497
 498    See also strtok_r().  */
 499 #if @GNULIB_STRSEP@
 500 # if ! @HAVE_STRSEP@
 501 _GL_FUNCDECL_SYS (strsep, char *,
 502                   (char **restrict __stringp, char const *restrict __delim)
 503                   _GL_ARG_NONNULL ((1, 2)));
 504 # endif
 505 _GL_CXXALIAS_SYS (strsep, char *,
 506                   (char **restrict __stringp, char const *restrict __delim));
 507 _GL_CXXALIASWARN (strsep);
 508 # if defined GNULIB_POSIXCHECK
 509 #  undef strsep
 510 _GL_WARN_ON_USE (strsep, "strsep cannot work correctly on character strings "
 511                  "in multibyte locales - "
 512                  "use mbssep if you care about internationalization");
 513 # endif
 514 #elif defined GNULIB_POSIXCHECK
 515 # undef strsep
 516 # if HAVE_RAW_DECL_STRSEP
 517 _GL_WARN_ON_USE (strsep, "strsep is unportable - "
 518                  "use gnulib module strsep for portability");
 519 # endif
 520 #endif
 521
 522 #if @GNULIB_STRSTR@
 523 # if @REPLACE_STRSTR@
 524 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 525 #   define strstr rpl_strstr
 526 #  endif
 527 _GL_FUNCDECL_RPL (strstr, char *, (const char *haystack, const char *needle)
 528                                   _GL_ATTRIBUTE_PURE
 529                                   _GL_ARG_NONNULL ((1, 2)));
 530 _GL_CXXALIAS_RPL (strstr, char *, (const char *haystack, const char *needle));
 531 # else
 532   /* On some systems, this function is defined as an overloaded function:
 533        extern "C++" { const char * strstr (const char *, const char *); }
 534        extern "C++" { char * strstr (char *, const char *); }  */
 535 _GL_CXXALIAS_SYS_CAST2 (strstr,
 536                         char *, (const char *haystack, const char *needle),
 537                         const char *, (const char *haystack, const char *needle));
 538 # endif
 539 # if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 10) && !defined __UCLIBC__) \
 540      && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
 541 _GL_CXXALIASWARN1 (strstr, char *, (char *haystack, const char *needle));
 542 _GL_CXXALIASWARN1 (strstr, const char *,
 543                    (const char *haystack, const char *needle));
 544 # else
 545 _GL_CXXALIASWARN (strstr);
 546 # endif
 547 #elif defined GNULIB_POSIXCHECK
 548 /* strstr() does not work with multibyte strings if the locale encoding is
 549    different from UTF-8:
 550    POSIX says that it operates on "strings", and "string" in POSIX is defined
 551    as a sequence of bytes, not of characters.  */
 552 # undef strstr
 553 /* Assume strstr is always declared.  */
 554 _GL_WARN_ON_USE (strstr, "strstr is quadratic on many systems, and cannot "
 555                  "work correctly on character strings in most "
 556                  "multibyte locales - "
 557                  "use mbsstr if you care about internationalization, "
 558                  "or use strstr if you care about speed");
 559 #endif
 560
 561 /* Find the first occurrence of NEEDLE in HAYSTACK, using case-insensitive
 562    comparison.  */
 563 #if @GNULIB_STRCASESTR@
 564 # if @REPLACE_STRCASESTR@
 565 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 566 #   define strcasestr rpl_strcasestr
 567 #  endif
 568 _GL_FUNCDECL_RPL (strcasestr, char *,
 569                   (const char *haystack, const char *needle)
 570                   _GL_ATTRIBUTE_PURE
 571                   _GL_ARG_NONNULL ((1, 2)));
 572 _GL_CXXALIAS_RPL (strcasestr, char *,
 573                   (const char *haystack, const char *needle));
 574 # else
 575 #  if ! @HAVE_STRCASESTR@
 576 _GL_FUNCDECL_SYS (strcasestr, char *,
 577                   (const char *haystack, const char *needle)
 578                   _GL_ATTRIBUTE_PURE
 579                   _GL_ARG_NONNULL ((1, 2)));
 580 #  endif
 581   /* On some systems, this function is defined as an overloaded function:
 582        extern "C++" { const char * strcasestr (const char *, const char *); }
 583        extern "C++" { char * strcasestr (char *, const char *); }  */
 584 _GL_CXXALIAS_SYS_CAST2 (strcasestr,
 585                         char *, (const char *haystack, const char *needle),
 586                         const char *, (const char *haystack, const char *needle));
 587 # endif
 588 # if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 10) && !defined __UCLIBC__) \
 589      && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
 590 _GL_CXXALIASWARN1 (strcasestr, char *, (char *haystack, const char *needle));
 591 _GL_CXXALIASWARN1 (strcasestr, const char *,
 592                    (const char *haystack, const char *needle));
 593 # else
 594 _GL_CXXALIASWARN (strcasestr);
 595 # endif
 596 #elif defined GNULIB_POSIXCHECK
 597 /* strcasestr() does not work with multibyte strings:
 598    It is a glibc extension, and glibc implements it only for unibyte
 599    locales.  */
 600 # undef strcasestr
 601 # if HAVE_RAW_DECL_STRCASESTR
 602 _GL_WARN_ON_USE (strcasestr, "strcasestr does work correctly on character "
 603                  "strings in multibyte locales - "
 604                  "use mbscasestr if you care about "
 605                  "internationalization, or use c-strcasestr if you want "
 606                  "a locale independent function");
 607 # endif
 608 #endif
 609
 610 /* Parse S into tokens separated by characters in DELIM.
 611    If S is NULL, the saved pointer in SAVE_PTR is used as
 612    the next starting point.  For example:
 613         char s[] = "-abc-=-def";
 614         char *sp;
 615         x = strtok_r(s, "-", &sp);      // x = "abc", sp = "=-def"
 616         x = strtok_r(NULL, "-=", &sp);  // x = "def", sp = NULL
 617         x = strtok_r(NULL, "=", &sp);   // x = NULL
 618                 // s = "abc\0-def\0"
 619
 620    This is a variant of strtok() that is multithread-safe.
 621
 622    For the POSIX documentation for this function, see:
 623    http://www.opengroup.org/susv3xsh/strtok.html
 624
 625    Caveat: It modifies the original string.
 626    Caveat: These functions cannot be used on constant strings.
 627    Caveat: The identity of the delimiting character is lost.
 628    Caveat: It doesn't work with multibyte strings unless all of the delimiter
 629            characters are ASCII characters < 0x30.
 630
 631    See also strsep().  */
 632 #if @GNULIB_STRTOK_R@
 633 # if @REPLACE_STRTOK_R@
 634 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 635 #   undef strtok_r
 636 #   define strtok_r rpl_strtok_r
 637 #  endif
 638 _GL_FUNCDECL_RPL (strtok_r, char *,
 639                   (char *restrict s, char const *restrict delim,
 640                    char **restrict save_ptr)
 641                   _GL_ARG_NONNULL ((2, 3)));
 642 _GL_CXXALIAS_RPL (strtok_r, char *,
 643                   (char *restrict s, char const *restrict delim,
 644                    char **restrict save_ptr));
 645 # else
 646 #  if @UNDEFINE_STRTOK_R@ || defined GNULIB_POSIXCHECK
 647 #   undef strtok_r
 648 #  endif
 649 #  if ! @HAVE_DECL_STRTOK_R@
 650 _GL_FUNCDECL_SYS (strtok_r, char *,
 651                   (char *restrict s, char const *restrict delim,
 652                    char **restrict save_ptr)
 653                   _GL_ARG_NONNULL ((2, 3)));
 654 #  endif
 655 _GL_CXXALIAS_SYS (strtok_r, char *,
 656                   (char *restrict s, char const *restrict delim,
 657                    char **restrict save_ptr));
 658 # endif
 659 _GL_CXXALIASWARN (strtok_r);
 660 # if defined GNULIB_POSIXCHECK
 661 _GL_WARN_ON_USE (strtok_r, "strtok_r cannot work correctly on character "
 662                  "strings in multibyte locales - "
 663                  "use mbstok_r if you care about internationalization");
 664 # endif
 665 #elif defined GNULIB_POSIXCHECK
 666 # undef strtok_r
 667 # if HAVE_RAW_DECL_STRTOK_R
 668 _GL_WARN_ON_USE (strtok_r, "strtok_r is unportable - "
 669                  "use gnulib module strtok_r for portability");
 670 # endif
 671 #endif
 672
 673
 674 /* The following functions are not specified by POSIX.  They are gnulib
 675    extensions.  */
 676
 677 #if @GNULIB_MBSLEN@
 678 /* Return the number of multibyte characters in the character string STRING.
 679    This considers multibyte characters, unlike strlen, which counts bytes.  */
 680 # ifdef __MirBSD__  /* MirBSD defines mbslen as a macro.  Override it.  */
 681 #  undef mbslen
 682 # endif
 683 # if @HAVE_MBSLEN@  /* AIX, OSF/1, MirBSD define mbslen already in libc.  */
 684 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 685 #   define mbslen rpl_mbslen
 686 #  endif
 687 _GL_FUNCDECL_RPL (mbslen, size_t, (const char *string) _GL_ARG_NONNULL ((1)));
 688 _GL_CXXALIAS_RPL (mbslen, size_t, (const char *string));
 689 # else
 690 _GL_FUNCDECL_SYS (mbslen, size_t, (const char *string) _GL_ARG_NONNULL ((1)));
 691 _GL_CXXALIAS_SYS (mbslen, size_t, (const char *string));
 692 # endif
 693 _GL_CXXALIASWARN (mbslen);
 694 #endif
 695
 696 #if @GNULIB_MBSNLEN@
 697 /* Return the number of multibyte characters in the character string starting
 698    at STRING and ending at STRING + LEN.  */
 699 _GL_EXTERN_C size_t mbsnlen (const char *string, size_t len)
 700      _GL_ARG_NONNULL ((1));
 701 #endif
 702
 703 #if @GNULIB_MBSCHR@
 704 /* Locate the first single-byte character C in the character string STRING,
 705    and return a pointer to it.  Return NULL if C is not found in STRING.
 706    Unlike strchr(), this function works correctly in multibyte locales with
 707    encodings such as GB18030.  */
 708 # if defined __hpux
 709 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 710 #   define mbschr rpl_mbschr /* avoid collision with HP-UX function */
 711 #  endif
 712 _GL_FUNCDECL_RPL (mbschr, char *, (const char *string, int c)
 713                                   _GL_ARG_NONNULL ((1)));
 714 _GL_CXXALIAS_RPL (mbschr, char *, (const char *string, int c));
 715 # else
 716 _GL_FUNCDECL_SYS (mbschr, char *, (const char *string, int c)
 717                                   _GL_ARG_NONNULL ((1)));
 718 _GL_CXXALIAS_SYS (mbschr, char *, (const char *string, int c));
 719 # endif
 720 _GL_CXXALIASWARN (mbschr);
 721 #endif
 722
 723 #if @GNULIB_MBSRCHR@
 724 /* Locate the last single-byte character C in the character string STRING,
 725    and return a pointer to it.  Return NULL if C is not found in STRING.
 726    Unlike strrchr(), this function works correctly in multibyte locales with
 727    encodings such as GB18030.  */
 728 # if defined __hpux
 729 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 730 #   define mbsrchr rpl_mbsrchr /* avoid collision with HP-UX function */
 731 #  endif
 732 _GL_FUNCDECL_RPL (mbsrchr, char *, (const char *string, int c)
 733                                    _GL_ARG_NONNULL ((1)));
 734 _GL_CXXALIAS_RPL (mbsrchr, char *, (const char *string, int c));
 735 # else
 736 _GL_FUNCDECL_SYS (mbsrchr, char *, (const char *string, int c)
 737                                    _GL_ARG_NONNULL ((1)));
 738 _GL_CXXALIAS_SYS (mbsrchr, char *, (const char *string, int c));
 739 # endif
 740 _GL_CXXALIASWARN (mbsrchr);
 741 #endif
 742
 743 #if @GNULIB_MBSSTR@
 744 /* Find the first occurrence of the character string NEEDLE in the character
 745    string HAYSTACK.  Return NULL if NEEDLE is not found in HAYSTACK.
 746    Unlike strstr(), this function works correctly in multibyte locales with
 747    encodings different from UTF-8.  */
 748 _GL_EXTERN_C char * mbsstr (const char *haystack, const char *needle)
 749      _GL_ARG_NONNULL ((1, 2));
 750 #endif
 751
 752 #if @GNULIB_MBSCASECMP@
 753 /* Compare the character strings S1 and S2, ignoring case, returning less than,
 754    equal to or greater than zero if S1 is lexicographically less than, equal to
 755    or greater than S2.
 756    Note: This function may, in multibyte locales, return 0 for strings of
 757    different lengths!
 758    Unlike strcasecmp(), this function works correctly in multibyte locales.  */
 759 _GL_EXTERN_C int mbscasecmp (const char *s1, const char *s2)
 760      _GL_ARG_NONNULL ((1, 2));
 761 #endif
 762
 763 #if @GNULIB_MBSNCASECMP@
 764 /* Compare the initial segment of the character string S1 consisting of at most
 765    N characters with the initial segment of the character string S2 consisting
 766    of at most N characters, ignoring case, returning less than, equal to or
 767    greater than zero if the initial segment of S1 is lexicographically less
 768    than, equal to or greater than the initial segment of S2.
 769    Note: This function may, in multibyte locales, return 0 for initial segments
 770    of different lengths!
 771    Unlike strncasecmp(), this function works correctly in multibyte locales.
 772    But beware that N is not a byte count but a character count!  */
 773 _GL_EXTERN_C int mbsncasecmp (const char *s1, const char *s2, size_t n)
 774      _GL_ARG_NONNULL ((1, 2));
 775 #endif
 776
 777 #if @GNULIB_MBSPCASECMP@
 778 /* Compare the initial segment of the character string STRING consisting of
 779    at most mbslen (PREFIX) characters with the character string PREFIX,
 780    ignoring case.  If the two match, return a pointer to the first byte
 781    after this prefix in STRING.  Otherwise, return NULL.
 782    Note: This function may, in multibyte locales, return non-NULL if STRING
 783    is of smaller length than PREFIX!
 784    Unlike strncasecmp(), this function works correctly in multibyte
 785    locales.  */
 786 _GL_EXTERN_C char * mbspcasecmp (const char *string, const char *prefix)
 787      _GL_ARG_NONNULL ((1, 2));
 788 #endif
 789
 790 #if @GNULIB_MBSCASESTR@
 791 /* Find the first occurrence of the character string NEEDLE in the character
 792    string HAYSTACK, using case-insensitive comparison.
 793    Note: This function may, in multibyte locales, return success even if
 794    strlen (haystack) < strlen (needle) !
 795    Unlike strcasestr(), this function works correctly in multibyte locales.  */
 796 _GL_EXTERN_C char * mbscasestr (const char *haystack, const char *needle)
 797      _GL_ARG_NONNULL ((1, 2));
 798 #endif
 799
 800 #if @GNULIB_MBSCSPN@
 801 /* Find the first occurrence in the character string STRING of any character
 802    in the character string ACCEPT.  Return the number of bytes from the
 803    beginning of the string to this occurrence, or to the end of the string
 804    if none exists.
 805    Unlike strcspn(), this function works correctly in multibyte locales.  */
 806 _GL_EXTERN_C size_t mbscspn (const char *string, const char *accept)
 807      _GL_ARG_NONNULL ((1, 2));
 808 #endif
 809
 810 #if @GNULIB_MBSPBRK@
 811 /* Find the first occurrence in the character string STRING of any character
 812    in the character string ACCEPT.  Return the pointer to it, or NULL if none
 813    exists.
 814    Unlike strpbrk(), this function works correctly in multibyte locales.  */
 815 # if defined __hpux
 816 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 817 #   define mbspbrk rpl_mbspbrk /* avoid collision with HP-UX function */
 818 #  endif
 819 _GL_FUNCDECL_RPL (mbspbrk, char *, (const char *string, const char *accept)
 820                                    _GL_ARG_NONNULL ((1, 2)));
 821 _GL_CXXALIAS_RPL (mbspbrk, char *, (const char *string, const char *accept));
 822 # else
 823 _GL_FUNCDECL_SYS (mbspbrk, char *, (const char *string, const char *accept)
 824                                    _GL_ARG_NONNULL ((1, 2)));
 825 _GL_CXXALIAS_SYS (mbspbrk, char *, (const char *string, const char *accept));
 826 # endif
 827 _GL_CXXALIASWARN (mbspbrk);
 828 #endif
 829
 830 #if @GNULIB_MBSSPN@
 831 /* Find the first occurrence in the character string STRING of any character
 832    not in the character string REJECT.  Return the number of bytes from the
 833    beginning of the string to this occurrence, or to the end of the string
 834    if none exists.
 835    Unlike strspn(), this function works correctly in multibyte locales.  */
 836 _GL_EXTERN_C size_t mbsspn (const char *string, const char *reject)
 837      _GL_ARG_NONNULL ((1, 2));
 838 #endif
 839
 840 #if @GNULIB_MBSSEP@
 841 /* Search the next delimiter (multibyte character listed in the character
 842    string DELIM) starting at the character string *STRINGP.
 843    If one is found, overwrite it with a NUL, and advance *STRINGP to point
 844    to the next multibyte character after it.  Otherwise, set *STRINGP to NULL.
 845    If *STRINGP was already NULL, nothing happens.
 846    Return the old value of *STRINGP.
 847
 848    This is a variant of mbstok_r() that supports empty fields.
 849
 850    Caveat: It modifies the original string.
 851    Caveat: These functions cannot be used on constant strings.
 852    Caveat: The identity of the delimiting character is lost.
 853
 854    See also mbstok_r().  */
 855 _GL_EXTERN_C char * mbssep (char **stringp, const char *delim)
 856      _GL_ARG_NONNULL ((1, 2));
 857 #endif
 858
 859 #if @GNULIB_MBSTOK_R@
 860 /* Parse the character string STRING into tokens separated by characters in
 861    the character string DELIM.
 862    If STRING is NULL, the saved pointer in SAVE_PTR is used as
 863    the next starting point.  For example:
 864         char s[] = "-abc-=-def";
 865         char *sp;
 866         x = mbstok_r(s, "-", &sp);      // x = "abc", sp = "=-def"
 867         x = mbstok_r(NULL, "-=", &sp);  // x = "def", sp = NULL
 868         x = mbstok_r(NULL, "=", &sp);   // x = NULL
 869                 // s = "abc\0-def\0"
 870
 871    Caveat: It modifies the original string.
 872    Caveat: These functions cannot be used on constant strings.
 873    Caveat: The identity of the delimiting character is lost.
 874
 875    See also mbssep().  */
 876 _GL_EXTERN_C char * mbstok_r (char *string, const char *delim, char **save_ptr)
 877      _GL_ARG_NONNULL ((2, 3));
 878 #endif
 879
 880 /* Map any int, typically from errno, into an error message.  */
 881 #if @GNULIB_STRERROR@
 882 # if @REPLACE_STRERROR@
 883 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 884 #   undef strerror
 885 #   define strerror rpl_strerror
 886 #  endif
 887 _GL_FUNCDECL_RPL (strerror, char *, (int));
 888 _GL_CXXALIAS_RPL (strerror, char *, (int));
 889 # else
 890 _GL_CXXALIAS_SYS (strerror, char *, (int));
 891 # endif
 892 _GL_CXXALIASWARN (strerror);
 893 #elif defined GNULIB_POSIXCHECK
 894 # undef strerror
 895 /* Assume strerror is always declared.  */
 896 _GL_WARN_ON_USE (strerror, "strerror is unportable - "
 897                  "use gnulib module strerror to guarantee non-NULL result");
 898 #endif
 899
 900 /* Map any int, typically from errno, into an error message.  Multithread-safe.
 901    Uses the POSIX declaration, not the glibc declaration.  */
 902 #if @GNULIB_STRERROR_R@
 903 # if @REPLACE_STRERROR_R@
 904 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 905 #   undef strerror_r
 906 #   define strerror_r rpl_strerror_r
 907 #  endif
 908 _GL_FUNCDECL_RPL (strerror_r, int, (int errnum, char *buf, size_t buflen)
 909                                    _GL_ARG_NONNULL ((2)));
 910 _GL_CXXALIAS_RPL (strerror_r, int, (int errnum, char *buf, size_t buflen));
 911 # else
 912 #  if !@HAVE_DECL_STRERROR_R@
 913 _GL_FUNCDECL_SYS (strerror_r, int, (int errnum, char *buf, size_t buflen)
 914                                    _GL_ARG_NONNULL ((2)));
 915 #  endif
 916 _GL_CXXALIAS_SYS (strerror_r, int, (int errnum, char *buf, size_t buflen));
 917 # endif
 918 # if @HAVE_DECL_STRERROR_R@
 919 _GL_CXXALIASWARN (strerror_r);
 920 # endif
 921 #elif defined GNULIB_POSIXCHECK
 922 # undef strerror_r
 923 # if HAVE_RAW_DECL_STRERROR_R
 924 _GL_WARN_ON_USE (strerror_r, "strerror_r is unportable - "
 925                  "use gnulib module strerror_r-posix for portability");
 926 # endif
 927 #endif
 928
 929 #if @GNULIB_STRSIGNAL@
 930 # if @REPLACE_STRSIGNAL@
 931 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 932 #   define strsignal rpl_strsignal
 933 #  endif
 934 _GL_FUNCDECL_RPL (strsignal, char *, (int __sig));
 935 _GL_CXXALIAS_RPL (strsignal, char *, (int __sig));
 936 # else
 937 #  if ! @HAVE_DECL_STRSIGNAL@
 938 _GL_FUNCDECL_SYS (strsignal, char *, (int __sig));
 939 #  endif
 940 /* Need to cast, because on Cygwin 1.5.x systems, the return type is
 941    'const char *'.  */
 942 _GL_CXXALIAS_SYS_CAST (strsignal, char *, (int __sig));
 943 # endif
 944 _GL_CXXALIASWARN (strsignal);
 945 #elif defined GNULIB_POSIXCHECK
 946 # undef strsignal
 947 # if HAVE_RAW_DECL_STRSIGNAL
 948 _GL_WARN_ON_USE (strsignal, "strsignal is unportable - "
 949                  "use gnulib module strsignal for portability");
 950 # endif
 951 #endif
 952
 953 #if @GNULIB_STRVERSCMP@
 954 # if !@HAVE_STRVERSCMP@
 955 _GL_FUNCDECL_SYS (strverscmp, int, (const char *, const char *)
 956                                    _GL_ARG_NONNULL ((1, 2)));
 957 # endif
 958 _GL_CXXALIAS_SYS (strverscmp, int, (const char *, const char *));
 959 _GL_CXXALIASWARN (strverscmp);
 960 #elif defined GNULIB_POSIXCHECK
 961 # undef strverscmp
 962 # if HAVE_RAW_DECL_STRVERSCMP
 963 _GL_WARN_ON_USE (strverscmp, "strverscmp is unportable - "
 964                  "use gnulib module strverscmp for portability");
 965 # endif
 966 #endif
 967
 968
 969 #endif /* _GL_STRING_H */
 970 #endif /* _GL_STRING_H */