wcsmbs/bits/wchar2.h

   1 /* Checking macros for wchar functions.
   2    Copyright (C) 2005, 2006, 2007, 2010 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library 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 GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #ifndef _WCHAR_H
  21 # error "Never include <bits/wchar2.h> directly; use <wchar.h> instead."
  22 #endif
  23
  24
  25 extern wchar_t *__wmemcpy_chk (wchar_t *__restrict __s1,
  26                                __const wchar_t *__restrict __s2, size_t __n,
  27                                size_t __ns1) __THROW;
  28 extern wchar_t *__REDIRECT_NTH (__wmemcpy_alias,
  29                                 (wchar_t *__restrict __s1,
  30                                  __const wchar_t *__restrict __s2, size_t __n),
  31                                 wmemcpy);
  32 extern wchar_t *__REDIRECT_NTH (__wmemcpy_chk_warn,
  33                                 (wchar_t *__restrict __s1,
  34                                  __const wchar_t *__restrict __s2, size_t __n,
  35                                  size_t __ns1), __wmemcpy_chk)
  36      __warnattr ("wmemcpy called with length bigger than size of destination "
  37                  "buffer");
  38
  39 __extern_always_inline wchar_t *
  40 __NTH (wmemcpy (wchar_t *__restrict __s1, __const wchar_t *__restrict __s2,
  41                 size_t __n))
  42 {
  43   if (__bos0 (__s1) != (size_t) -1)
  44     {
  45       if (!__builtin_constant_p (__n))
  46         return __wmemcpy_chk (__s1, __s2, __n,
  47                               __bos0 (__s1) / sizeof (wchar_t));
  48
  49       if (__n > __bos0 (__s1) / sizeof (wchar_t))
  50         return __wmemcpy_chk_warn (__s1, __s2, __n,
  51                                    __bos0 (__s1) / sizeof (wchar_t));
  52     }
  53   return __wmemcpy_alias (__s1, __s2, __n);
  54 }
  55
  56
  57 extern wchar_t *__wmemmove_chk (wchar_t *__s1, __const wchar_t *__s2,
  58                                 size_t __n, size_t __ns1) __THROW;
  59 extern wchar_t *__REDIRECT_NTH (__wmemmove_alias, (wchar_t *__s1,
  60                                                    __const wchar_t *__s2,
  61                                                    size_t __n), wmemmove);
  62 extern wchar_t *__REDIRECT_NTH (__wmemmove_chk_warn,
  63                                 (wchar_t *__s1, __const wchar_t *__s2,
  64                                  size_t __n, size_t __ns1), __wmemmove_chk)
  65      __warnattr ("wmemmove called with length bigger than size of destination "
  66                  "buffer");
  67
  68 __extern_always_inline wchar_t *
  69 __NTH (wmemmove (wchar_t *__s1, __const wchar_t *__s2, size_t __n))
  70 {
  71   if (__bos0 (__s1) != (size_t) -1)
  72     {
  73       if (!__builtin_constant_p (__n))
  74         return __wmemmove_chk (__s1, __s2, __n,
  75                                __bos0 (__s1) / sizeof (wchar_t));
  76
  77       if (__n > __bos0 (__s1) / sizeof (wchar_t))
  78         return __wmemmove_chk_warn (__s1, __s2, __n,
  79                                     __bos0 (__s1) / sizeof (wchar_t));
  80     }
  81   return __wmemmove_alias (__s1, __s2, __n);
  82 }
  83
  84
  85 #ifdef __USE_GNU
  86 extern wchar_t *__wmempcpy_chk (wchar_t *__restrict __s1,
  87                                 __const wchar_t *__restrict __s2, size_t __n,
  88                                 size_t __ns1) __THROW;
  89 extern wchar_t *__REDIRECT_NTH (__wmempcpy_alias,
  90                                 (wchar_t *__restrict __s1,
  91                                  __const wchar_t *__restrict __s2,
  92                                  size_t __n), wmempcpy);
  93 extern wchar_t *__REDIRECT_NTH (__wmempcpy_chk_warn,
  94                                 (wchar_t *__restrict __s1,
  95                                  __const wchar_t *__restrict __s2, size_t __n,
  96                                  size_t __ns1), __wmempcpy_chk)
  97      __warnattr ("wmempcpy called with length bigger than size of destination "
  98                  "buffer");
  99
 100 __extern_always_inline wchar_t *
 101 __NTH (wmempcpy (wchar_t *__restrict __s1, __const wchar_t *__restrict __s2,
 102                  size_t __n))
 103 {
 104   if (__bos0 (__s1) != (size_t) -1)
 105     {
 106       if (!__builtin_constant_p (__n))
 107         return __wmempcpy_chk (__s1, __s2, __n,
 108                                __bos0 (__s1) / sizeof (wchar_t));
 109
 110       if (__n > __bos0 (__s1) / sizeof (wchar_t))
 111         return __wmempcpy_chk_warn (__s1, __s2, __n,
 112                                     __bos0 (__s1) / sizeof (wchar_t));
 113     }
 114   return __wmempcpy_alias (__s1, __s2, __n);
 115 }
 116 #endif
 117
 118
 119 extern wchar_t *__wmemset_chk (wchar_t *__s, wchar_t __c, size_t __n,
 120                                size_t __ns) __THROW;
 121 extern wchar_t *__REDIRECT_NTH (__wmemset_alias, (wchar_t *__s, wchar_t __c,
 122                                                   size_t __n), wmemset);
 123 extern wchar_t *__REDIRECT_NTH (__wmemset_chk_warn,
 124                                 (wchar_t *__s, wchar_t __c, size_t __n,
 125                                  size_t __ns), __wmemset_chk)
 126      __warnattr ("wmemset called with length bigger than size of destination "
 127                  "buffer");
 128
 129 __extern_always_inline wchar_t *
 130 __NTH (wmemset (wchar_t *__s, wchar_t __c, size_t __n))
 131 {
 132   if (__bos0 (__s) != (size_t) -1)
 133     {
 134       if (!__builtin_constant_p (__n))
 135         return __wmemset_chk (__s, __c, __n, __bos0 (__s) / sizeof (wchar_t));
 136
 137       if (__n > __bos0 (__s) / sizeof (wchar_t))
 138         return __wmemset_chk_warn (__s, __c, __n,
 139                                    __bos0 (__s) / sizeof (wchar_t));
 140     }
 141   return __wmemset_alias (__s, __c, __n);
 142 }
 143
 144
 145 extern wchar_t *__wcscpy_chk (wchar_t *__restrict __dest,
 146                               __const wchar_t *__restrict __src,
 147                               size_t __n) __THROW;
 148 extern wchar_t *__REDIRECT_NTH (__wcscpy_alias,
 149                                 (wchar_t *__restrict __dest,
 150                                  __const wchar_t *__restrict __src), wcscpy);
 151
 152 __extern_always_inline wchar_t *
 153 __NTH (wcscpy (wchar_t *__restrict __dest, __const wchar_t *__restrict __src))
 154 {
 155   if (__bos (__dest) != (size_t) -1)
 156     return __wcscpy_chk (__dest, __src, __bos (__dest) / sizeof (wchar_t));
 157   return __wcscpy_alias (__dest, __src);
 158 }
 159
 160
 161 extern wchar_t *__wcpcpy_chk (wchar_t *__restrict __dest,
 162                               __const wchar_t *__restrict __src,
 163                               size_t __destlen) __THROW;
 164 extern wchar_t *__REDIRECT_NTH (__wcpcpy_alias,
 165                                 (wchar_t *__restrict __dest,
 166                                  __const wchar_t *__restrict __src), wcpcpy);
 167
 168 __extern_always_inline wchar_t *
 169 __NTH (wcpcpy (wchar_t *__restrict __dest, __const wchar_t *__restrict __src))
 170 {
 171   if (__bos (__dest) != (size_t) -1)
 172     return __wcpcpy_chk (__dest, __src, __bos (__dest) / sizeof (wchar_t));
 173   return __wcpcpy_alias (__dest, __src);
 174 }
 175
 176
 177 extern wchar_t *__wcsncpy_chk (wchar_t *__restrict __dest,
 178                                __const wchar_t *__restrict __src, size_t __n,
 179                                size_t __destlen) __THROW;
 180 extern wchar_t *__REDIRECT_NTH (__wcsncpy_alias,
 181                                 (wchar_t *__restrict __dest,
 182                                  __const wchar_t *__restrict __src,
 183                                  size_t __n), wcsncpy);
 184 extern wchar_t *__REDIRECT_NTH (__wcsncpy_chk_warn,
 185                                 (wchar_t *__restrict __dest,
 186                                  __const wchar_t *__restrict __src,
 187                                  size_t __n, size_t __destlen), __wcsncpy_chk)
 188      __warnattr ("wcsncpy called with length bigger than size of destination "
 189                  "buffer");
 190
 191 __extern_always_inline wchar_t *
 192 __NTH (wcsncpy (wchar_t *__restrict __dest, __const wchar_t *__restrict __src,
 193                 size_t __n))
 194 {
 195   if (__bos (__dest) != (size_t) -1)
 196     {
 197       if (!__builtin_constant_p (__n))
 198         return __wcsncpy_chk (__dest, __src, __n,
 199                               __bos (__dest) / sizeof (wchar_t));
 200       if (__n > __bos (__dest) / sizeof (wchar_t))
 201         return __wcsncpy_chk_warn (__dest, __src, __n,
 202                                    __bos (__dest) / sizeof (wchar_t));
 203     }
 204   return __wcsncpy_alias (__dest, __src, __n);
 205 }
 206
 207
 208 extern wchar_t *__wcpncpy_chk (wchar_t *__restrict __dest,
 209                                __const wchar_t *__restrict __src, size_t __n,
 210                                size_t __destlen) __THROW;
 211 extern wchar_t *__REDIRECT_NTH (__wcpncpy_alias,
 212                                 (wchar_t *__restrict __dest,
 213                                  __const wchar_t *__restrict __src,
 214                                  size_t __n), wcpncpy);
 215 extern wchar_t *__REDIRECT_NTH (__wcpncpy_chk_warn,
 216                                 (wchar_t *__restrict __dest,
 217                                  __const wchar_t *__restrict __src,
 218                                  size_t __n, size_t __destlen), __wcpncpy_chk)
 219      __warnattr ("wcpncpy called with length bigger than size of destination "
 220                  "buffer");
 221
 222 __extern_always_inline wchar_t *
 223 __NTH (wcpncpy (wchar_t *__restrict __dest, __const wchar_t *__restrict __src,
 224                 size_t __n))
 225 {
 226   if (__bos (__dest) != (size_t) -1)
 227     {
 228       if (!__builtin_constant_p (__n))
 229         return __wcpncpy_chk (__dest, __src, __n,
 230                               __bos (__dest) / sizeof (wchar_t));
 231       if (__n > __bos (__dest) / sizeof (wchar_t))
 232         return __wcpncpy_chk_warn (__dest, __src, __n,
 233                                    __bos (__dest) / sizeof (wchar_t));
 234     }
 235   return __wcpncpy_alias (__dest, __src, __n);
 236 }
 237
 238
 239 extern wchar_t *__wcscat_chk (wchar_t *__restrict __dest,
 240                               __const wchar_t *__restrict __src,
 241                               size_t __destlen) __THROW;
 242 extern wchar_t *__REDIRECT_NTH (__wcscat_alias,
 243                                 (wchar_t *__restrict __dest,
 244                                  __const wchar_t *__restrict __src), wcscat);
 245
 246 __extern_always_inline wchar_t *
 247 __NTH (wcscat (wchar_t *__restrict __dest, __const wchar_t *__restrict __src))
 248 {
 249   if (__bos (__dest) != (size_t) -1)
 250     return __wcscat_chk (__dest, __src, __bos (__dest) / sizeof (wchar_t));
 251   return __wcscat_alias (__dest, __src);
 252 }
 253
 254
 255 extern wchar_t *__wcsncat_chk (wchar_t *__restrict __dest,
 256                                __const wchar_t *__restrict __src,
 257                                size_t __n, size_t __destlen) __THROW;
 258 extern wchar_t *__REDIRECT_NTH (__wcsncat_alias,
 259                                 (wchar_t *__restrict __dest,
 260                                  __const wchar_t *__restrict __src,
 261                                  size_t __n), wcsncat);
 262
 263 __extern_always_inline wchar_t *
 264 __NTH (wcsncat (wchar_t *__restrict __dest, __const wchar_t *__restrict __src,
 265                 size_t __n))
 266 {
 267   if (__bos (__dest) != (size_t) -1)
 268     return __wcsncat_chk (__dest, __src, __n,
 269                           __bos (__dest) / sizeof (wchar_t));
 270   return __wcsncat_alias (__dest, __src, __n);
 271 }
 272
 273
 274 extern int __swprintf_chk (wchar_t *__restrict __s, size_t __n,
 275                            int __flag, size_t __s_len,
 276                            __const wchar_t *__restrict __format, ...)
 277      __THROW /* __attribute__ ((__format__ (__wprintf__, 5, 6))) */;
 278
 279 extern int __REDIRECT_NTH_LDBL (__swprintf_alias,
 280                                 (wchar_t *__restrict __s, size_t __n,
 281                                  __const wchar_t *__restrict __fmt, ...),
 282                                 swprintf);
 283
 284 #ifdef __va_arg_pack
 285 __extern_always_inline int
 286 __NTH (swprintf (wchar_t *__restrict __s, size_t __n,
 287                  __const wchar_t *__restrict __fmt, ...))
 288 {
 289   if (__bos (__s) != (size_t) -1 || __USE_FORTIFY_LEVEL > 1)
 290     return __swprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
 291                            __bos (__s) / sizeof (wchar_t),
 292                            __fmt, __va_arg_pack ());
 293   return __swprintf_alias (__s, __n, __fmt, __va_arg_pack ());
 294 }
 295 #elif !defined __cplusplus
 296 /* XXX We might want to have support in gcc for swprintf.  */
 297 # define swprintf(s, n, ...) \
 298   (__bos (s) != (size_t) -1 || __USE_FORTIFY_LEVEL > 1                        \
 299    ? __swprintf_chk (s, n, __USE_FORTIFY_LEVEL - 1,                           \
 300                      __bos (s) / sizeof (wchar_t), __VA_ARGS__)               \
 301    : swprintf (s, n, __VA_ARGS__))
 302 #endif
 303
 304 extern int __vswprintf_chk (wchar_t *__restrict __s, size_t __n,
 305                             int __flag, size_t __s_len,
 306                             __const wchar_t *__restrict __format,
 307                             __gnuc_va_list __arg)
 308      __THROW /* __attribute__ ((__format__ (__wprintf__, 5, 0))) */;
 309
 310 extern int __REDIRECT_NTH_LDBL (__vswprintf_alias,
 311                                 (wchar_t *__restrict __s, size_t __n,
 312                                  __const wchar_t *__restrict __fmt,
 313                                  __gnuc_va_list __ap), vswprintf);
 314
 315 __extern_always_inline int
 316 __NTH (vswprintf (wchar_t *__restrict __s, size_t __n,
 317                   __const wchar_t *__restrict __fmt, __gnuc_va_list __ap))
 318 {
 319   if (__bos (__s) != (size_t) -1 || __USE_FORTIFY_LEVEL > 1)
 320     return __vswprintf_chk (__s, __n,  __USE_FORTIFY_LEVEL - 1,
 321                             __bos (__s) / sizeof (wchar_t), __fmt, __ap);
 322   return __vswprintf_alias (__s, __n, __fmt, __ap);
 323 }
 324
 325
 326 #if __USE_FORTIFY_LEVEL > 1
 327
 328 extern int __fwprintf_chk (__FILE *__restrict __stream, int __flag,
 329                            __const wchar_t *__restrict __format, ...);
 330 extern int __wprintf_chk (int __flag, __const wchar_t *__restrict __format,
 331                           ...);
 332 extern int __vfwprintf_chk (__FILE *__restrict __stream, int __flag,
 333                             __const wchar_t *__restrict __format,
 334                             __gnuc_va_list __ap);
 335 extern int __vwprintf_chk (int __flag, __const wchar_t *__restrict __format,
 336                            __gnuc_va_list __ap);
 337
 338 # ifdef __va_arg_pack
 339 __extern_always_inline int
 340 wprintf (__const wchar_t *__restrict __fmt, ...)
 341 {
 342   return __wprintf_chk (__USE_FORTIFY_LEVEL - 1, __fmt, __va_arg_pack ());
 343 }
 344
 345 __extern_always_inline int
 346 fwprintf (__FILE *__restrict __stream, __const wchar_t *__restrict __fmt, ...)
 347 {
 348   return __fwprintf_chk (__stream, __USE_FORTIFY_LEVEL - 1, __fmt,
 349                          __va_arg_pack ());
 350 }
 351 # elif !defined __cplusplus
 352 #  define wprintf(...) \
 353   __wprintf_chk (__USE_FORTIFY_LEVEL - 1, __VA_ARGS__)
 354 #  define fwprintf(stream, ...) \
 355   __fwprintf_chk (stream, __USE_FORTIFY_LEVEL - 1, __VA_ARGS__)
 356 # endif
 357
 358 __extern_always_inline int
 359 vwprintf (__const wchar_t *__restrict __fmt, __gnuc_va_list __ap)
 360 {
 361   return __vwprintf_chk (__USE_FORTIFY_LEVEL - 1, __fmt, __ap);
 362 }
 363
 364 __extern_always_inline int
 365 vfwprintf (__FILE *__restrict __stream,
 366            __const wchar_t *__restrict __fmt, __gnuc_va_list __ap)
 367 {
 368   return __vfwprintf_chk (__stream, __USE_FORTIFY_LEVEL - 1, __fmt, __ap);
 369 }
 370
 371 #endif
 372
 373 extern wchar_t *__fgetws_chk (wchar_t *__restrict __s, size_t __size, int __n,
 374                               __FILE *__restrict __stream) __wur;
 375 extern wchar_t *__REDIRECT (__fgetws_alias,
 376                             (wchar_t *__restrict __s, int __n,
 377                              __FILE *__restrict __stream), fgetws) __wur;
 378 extern wchar_t *__REDIRECT (__fgetws_chk_warn,
 379                             (wchar_t *__restrict __s, size_t __size, int __n,
 380                              __FILE *__restrict __stream), __fgetws_chk)
 381      __wur __warnattr ("fgetws called with bigger size than length "
 382                        "of destination buffer");
 383
 384 __extern_always_inline __wur wchar_t *
 385 fgetws (wchar_t *__restrict __s, int __n, __FILE *__restrict __stream)
 386 {
 387   if (__bos (__s) != (size_t) -1)
 388     {
 389       if (!__builtin_constant_p (__n) || __n <= 0)
 390         return __fgetws_chk (__s, __bos (__s) / sizeof (wchar_t),
 391                              __n, __stream);
 392
 393       if ((size_t) __n > __bos (__s) / sizeof (wchar_t))
 394         return __fgetws_chk_warn (__s, __bos (__s) / sizeof (wchar_t),
 395                                   __n, __stream);
 396     }
 397   return __fgetws_alias (__s, __n, __stream);
 398 }
 399
 400 #ifdef __USE_GNU
 401 extern wchar_t *__fgetws_unlocked_chk (wchar_t *__restrict __s, size_t __size,
 402                                        int __n, __FILE *__restrict __stream)
 403   __wur;
 404 extern wchar_t *__REDIRECT (__fgetws_unlocked_alias,
 405                             (wchar_t *__restrict __s, int __n,
 406                              __FILE *__restrict __stream), fgetws_unlocked)
 407   __wur;
 408 extern wchar_t *__REDIRECT (__fgetws_unlocked_chk_warn,
 409                             (wchar_t *__restrict __s, size_t __size, int __n,
 410                              __FILE *__restrict __stream),
 411                             __fgetws_unlocked_chk)
 412      __wur __warnattr ("fgetws_unlocked called with bigger size than length "
 413                        "of destination buffer");
 414
 415 __extern_always_inline __wur wchar_t *
 416 fgetws_unlocked (wchar_t *__restrict __s, int __n, __FILE *__restrict __stream)
 417 {
 418   if (__bos (__s) != (size_t) -1)
 419     {
 420       if (!__builtin_constant_p (__n) || __n <= 0)
 421         return __fgetws_unlocked_chk (__s, __bos (__s) / sizeof (wchar_t),
 422                                       __n, __stream);
 423
 424       if ((size_t) __n > __bos (__s) / sizeof (wchar_t))
 425         return __fgetws_unlocked_chk_warn (__s, __bos (__s) / sizeof (wchar_t),
 426                                            __n, __stream);
 427     }
 428   return __fgetws_unlocked_alias (__s, __n, __stream);
 429 }
 430 #endif
 431
 432
 433 extern size_t __wcrtomb_chk (char *__restrict __s, wchar_t __wchar,
 434                              mbstate_t *__restrict __p,
 435                              size_t __buflen) __THROW __wur;
 436 extern size_t __REDIRECT_NTH (__wcrtomb_alias,
 437                               (char *__restrict __s, wchar_t __wchar,
 438                                mbstate_t *__restrict __ps), wcrtomb) __wur;
 439
 440 __extern_always_inline __wur size_t
 441 __NTH (wcrtomb (char *__restrict __s, wchar_t __wchar,
 442                 mbstate_t *__restrict __ps))
 443 {
 444   /* We would have to include <limits.h> to get a definition of MB_LEN_MAX.
 445      But this would only disturb the namespace.  So we define our own
 446      version here.  */
 447 #define __WCHAR_MB_LEN_MAX      16
 448 #if defined MB_LEN_MAX && MB_LEN_MAX != __WCHAR_MB_LEN_MAX
 449 # error "Assumed value of MB_LEN_MAX wrong"
 450 #endif
 451   if (__bos (__s) != (size_t) -1 && __WCHAR_MB_LEN_MAX > __bos (__s))
 452     return __wcrtomb_chk (__s, __wchar, __ps, __bos (__s));
 453   return __wcrtomb_alias (__s, __wchar, __ps);
 454 }
 455
 456
 457 extern size_t __mbsrtowcs_chk (wchar_t *__restrict __dst,
 458                                __const char **__restrict __src,
 459                                size_t __len, mbstate_t *__restrict __ps,
 460                                size_t __dstlen) __THROW;
 461 extern size_t __REDIRECT_NTH (__mbsrtowcs_alias,
 462                               (wchar_t *__restrict __dst,
 463                                __const char **__restrict __src,
 464                                size_t __len, mbstate_t *__restrict __ps),
 465                               mbsrtowcs);
 466 extern size_t __REDIRECT_NTH (__mbsrtowcs_chk_warn,
 467                               (wchar_t *__restrict __dst,
 468                                __const char **__restrict __src,
 469                                size_t __len, mbstate_t *__restrict __ps,
 470                                size_t __dstlen), __mbsrtowcs_chk)
 471      __warnattr ("mbsrtowcs called with dst buffer smaller than len "
 472                  "* sizeof (wchar_t)");
 473
 474 __extern_always_inline size_t
 475 __NTH (mbsrtowcs (wchar_t *__restrict __dst, __const char **__restrict __src,
 476                   size_t __len, mbstate_t *__restrict __ps))
 477 {
 478   if (__bos (__dst) != (size_t) -1)
 479     {
 480       if (!__builtin_constant_p (__len))
 481         return __mbsrtowcs_chk (__dst, __src, __len, __ps,
 482                                 __bos (__dst) / sizeof (wchar_t));
 483
 484       if (__len > __bos (__dst) / sizeof (wchar_t))
 485         return __mbsrtowcs_chk_warn (__dst, __src, __len, __ps,
 486                                      __bos (__dst) / sizeof (wchar_t));
 487     }
 488   return __mbsrtowcs_alias (__dst, __src, __len, __ps);
 489 }
 490
 491
 492 extern size_t __wcsrtombs_chk (char *__restrict __dst,
 493                                __const wchar_t **__restrict __src,
 494                                size_t __len, mbstate_t *__restrict __ps,
 495                                size_t __dstlen) __THROW;
 496 extern size_t __REDIRECT_NTH (__wcsrtombs_alias,
 497                               (char *__restrict __dst,
 498                                __const wchar_t **__restrict __src,
 499                                size_t __len, mbstate_t *__restrict __ps),
 500                               wcsrtombs);
 501 extern size_t __REDIRECT_NTH (__wcsrtombs_chk_warn,
 502                               (char *__restrict __dst,
 503                                __const wchar_t **__restrict __src,
 504                                size_t __len, mbstate_t *__restrict __ps,
 505                                size_t __dstlen), __wcsrtombs_chk)
 506     __warnattr ("wcsrtombs called with dst buffer smaller than len");
 507
 508 __extern_always_inline size_t
 509 __NTH (wcsrtombs (char *__restrict __dst, __const wchar_t **__restrict __src,
 510                   size_t __len, mbstate_t *__restrict __ps))
 511 {
 512   if (__bos (__dst) != (size_t) -1)
 513     {
 514       if (!__builtin_constant_p (__len))
 515         return __wcsrtombs_chk (__dst, __src, __len, __ps, __bos (__dst));
 516
 517       if (__len > __bos (__dst))
 518         return __wcsrtombs_chk_warn (__dst, __src, __len, __ps, __bos (__dst));
 519     }
 520   return __wcsrtombs_alias (__dst, __src, __len, __ps);
 521 }
 522
 523
 524 #ifdef __USE_GNU
 525 extern size_t __mbsnrtowcs_chk (wchar_t *__restrict __dst,
 526                                 __const char **__restrict __src, size_t __nmc,
 527                                 size_t __len, mbstate_t *__restrict __ps,
 528                                 size_t __dstlen) __THROW;
 529 extern size_t __REDIRECT_NTH (__mbsnrtowcs_alias,
 530                               (wchar_t *__restrict __dst,
 531                                __const char **__restrict __src, size_t __nmc,
 532                                size_t __len, mbstate_t *__restrict __ps),
 533                               mbsnrtowcs);
 534 extern size_t __REDIRECT_NTH (__mbsnrtowcs_chk_warn,
 535                               (wchar_t *__restrict __dst,
 536                                __const char **__restrict __src, size_t __nmc,
 537                                size_t __len, mbstate_t *__restrict __ps,
 538                                size_t __dstlen), __mbsnrtowcs_chk)
 539      __warnattr ("mbsnrtowcs called with dst buffer smaller than len "
 540                  "* sizeof (wchar_t)");
 541
 542 __extern_always_inline size_t
 543 __NTH (mbsnrtowcs (wchar_t *__restrict __dst, __const char **__restrict __src,
 544                    size_t __nmc, size_t __len, mbstate_t *__restrict __ps))
 545 {
 546   if (__bos (__dst) != (size_t) -1)
 547     {
 548       if (!__builtin_constant_p (__len))
 549         return __mbsnrtowcs_chk (__dst, __src, __nmc, __len, __ps,
 550                                  __bos (__dst) / sizeof (wchar_t));
 551
 552       if (__len > __bos (__dst) / sizeof (wchar_t))
 553         return __mbsnrtowcs_chk_warn (__dst, __src, __nmc, __len, __ps,
 554                                       __bos (__dst) / sizeof (wchar_t));
 555     }
 556   return __mbsnrtowcs_alias (__dst, __src, __nmc, __len, __ps);
 557 }
 558
 559
 560 extern size_t __wcsnrtombs_chk (char *__restrict __dst,
 561                                 __const wchar_t **__restrict __src,
 562                                 size_t __nwc, size_t __len,
 563                                 mbstate_t *__restrict __ps, size_t __dstlen)
 564      __THROW;
 565 extern size_t __REDIRECT_NTH (__wcsnrtombs_alias,
 566                               (char *__restrict __dst,
 567                                __const wchar_t **__restrict __src,
 568                                size_t __nwc, size_t __len,
 569                                mbstate_t *__restrict __ps), wcsnrtombs);
 570 extern size_t __REDIRECT_NTH (__wcsnrtombs_chk_warn,
 571                               (char *__restrict __dst,
 572                                __const wchar_t **__restrict __src,
 573                                size_t __nwc, size_t __len,
 574                                mbstate_t *__restrict __ps,
 575                                size_t __dstlen), __wcsnrtombs_chk)
 576      __warnattr ("wcsnrtombs called with dst buffer smaller than len");
 577
 578 __extern_always_inline size_t
 579 __NTH (wcsnrtombs (char *__restrict __dst, __const wchar_t **__restrict __src,
 580                    size_t __nwc, size_t __len, mbstate_t *__restrict __ps))
 581 {
 582   if (__bos (__dst) != (size_t) -1)
 583     {
 584       if (!__builtin_constant_p (__len))
 585         return __wcsnrtombs_chk (__dst, __src, __nwc, __len, __ps,
 586                                  __bos (__dst));
 587
 588       if (__len > __bos (__dst))
 589         return __wcsnrtombs_chk_warn (__dst, __src, __nwc, __len, __ps,
 590                                       __bos (__dst));
 591     }
 592   return __wcsnrtombs_alias (__dst, __src, __nwc, __len, __ps);
 593 }
 594 #endif