1: /* Copyright (C) 1995, 1996, 1997, 2005 Free Software Foundation, Inc.
    2:    This file is part of the GNU C Library.
    3:    Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995.
    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: #include <wchar.h>
   21: 
   22: 
   23: /* Copy no more than N wide-characters of SRC to DEST.  */
   24: wchar_t *
   25: __wcsncpy_chk (wchar_t *dest, const wchar_t *src, size_t n, size_t destlen)
   26: {
   27:   if (__builtin_expect (destlen < n, 0))
   28:     __chk_fail ();
   29: 
   30:   /* This function is not often enough used to justify not using a
   31:      tail call.  */
   32:   return __wcsncpy (dest, src, n);
   33: }