diff options
Diffstat (limited to 'REORG.TODO/debug/wcpcpy_chk.c')
-rw-r--r-- | REORG.TODO/debug/wcpcpy_chk.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/REORG.TODO/debug/wcpcpy_chk.c b/REORG.TODO/debug/wcpcpy_chk.c new file mode 100644 index 0000000000..a0dbbf3b14 --- /dev/null +++ b/REORG.TODO/debug/wcpcpy_chk.c @@ -0,0 +1,44 @@ +/* Copyright (C) 1996-2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 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, see + <http://www.gnu.org/licenses/>. */ + +#include <wchar.h> + +#define __need_ptrdiff_t +#include <stddef.h> + + +/* 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 (__glibc_unlikely (destlen-- == 0)) + __chk_fail (); + c = wcp[off]; + *++wcp = c; + } + while (c != L'\0'); + + return wcp; +} |