Back to index

glibc  2.9
wcpncpy_chk.c
Go to the documentation of this file.
00001 /* Copyright (C) 1995, 1996, 1997, 2005 Free Software Foundation, Inc.
00002    This file is part of the GNU C Library.
00003    Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995.
00004 
00005    The GNU C Library is free software; you can redistribute it and/or
00006    modify it under the terms of the GNU Lesser General Public
00007    License as published by the Free Software Foundation; either
00008    version 2.1 of the License, or (at your option) any later version.
00009 
00010    The GNU C Library is distributed in the hope that it will be useful,
00011    but WITHOUT ANY WARRANTY; without even the implied warranty of
00012    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013    Lesser General Public License for more details.
00014 
00015    You should have received a copy of the GNU Lesser General Public
00016    License along with the GNU C Library; if not, write to the Free
00017    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00018    02111-1307 USA.  */
00019 
00020 #include <wchar.h>
00021 
00022 
00023 /* Copy no more than N wide-characters of SRC to DEST.  */
00024 wchar_t *
00025 __wcpncpy_chk (wchar_t *dest, const wchar_t *src, size_t n, size_t destlen)
00026 {
00027   if (__builtin_expect (destlen < n, 0))
00028     __chk_fail ();
00029 
00030   /* This function is not often enough used to justify not using a
00031      tail call.  */
00032   return __wcpncpy (dest, src, n);
00033 }