debug/wctomb_chk.c

   1 /* Copyright (C) 2005-2017 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <http://www.gnu.org/licenses/>.  */
  17
  18 #include <locale.h>
  19 #include <stdlib.h>
  20 #include <wcsmbs/wcsmbsload.h>
  21
  22
  23 extern mbstate_t __wctomb_state attribute_hidden; /* Defined in wctomb.c.  */
  24
  25
  26 int
  27 __wctomb_chk (char *s, wchar_t wchar, size_t buflen)
  28 {
  29   /* We do not have to implement the full wctomb semantics since we
  30      know that S cannot be NULL when we come here.  */
  31   if (buflen < MB_CUR_MAX)
  32     __chk_fail ();
  33
  34   return __wcrtomb (s, wchar, &__wctomb_state);
  35 }