blob: 41e00dc6e7be11077909204cadeba73226b4526a (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
|
/* Copyright (C) 1996-2018 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;
}
|
