glibc/debug/wcrtomb_chk.c

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/* Copyright (C) 2005-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <langinfo.h>
#include <locale.h>
#include <stdlib.h>
#include <wchar.h>
#include <locale/localeinfo.h>
size_t
__wcrtomb_chk (char *s, wchar_t wchar, mbstate_t *ps, size_t buflen)
{
/* We do not have to implement the full wctomb semantics since we
know that S cannot be NULL when we come here. */
if (buflen < MB_CUR_MAX)
__chk_fail ();
return __wcrtomb (s, wchar, ps);
}