From 0ecb606cb6cf65de1d9fc8a919bceb4be476c602 Mon Sep 17 00:00:00 2001 From: Jakub Jelinek Date: Thu, 12 Jul 2007 18:26:36 +0000 Subject: 2.5-18.1 --- debug/wcpcpy_chk.c | 45 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 debug/wcpcpy_chk.c (limited to 'debug/wcpcpy_chk.c') diff --git a/debug/wcpcpy_chk.c b/debug/wcpcpy_chk.c new file mode 100644 index 0000000000..c48ec68ccc --- /dev/null +++ b/debug/wcpcpy_chk.c @@ -0,0 +1,45 @@ +/* Copyright (C) 1996, 1997, 2005 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper , 1996. + + 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include + +#define __need_ptrdiff_t +#include + + +/* Copy SRC to DEST, returning the address of the terminating L'\0' in + DEST. Check for overflows. */ +wchar_t * +__wcpcpy_chk (wchar_t *dest, const wchar_t *src, size_t destlen) +{ + wchar_t *wcp = (wchar_t *) dest - 1; + wint_t c; + const ptrdiff_t off = src - dest + 1; + + do + { + if (__builtin_expect (destlen-- == 0, 0)) + __chk_fail (); + c = wcp[off]; + *++wcp = c; + } + while (c != L'\0'); + + return wcp; +} -- cgit v1.2.3