1 /* Copyright (C) 1996-2022 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library. If not, see
16 <https://www.gnu.org/licenses/>. */
17
18 /* The generic version of this file assumes that __alignof__(wchar_t) ==
19 sizeof (wchar_t). We therefore use this port-specific implementation
20 instead. */
21 #include <wchar.h>
22
23 /* Copy SRC to DEST, returning the address of the terminating L'\0' in
24 DEST. Check for overflows. */
25 wchar_t *
__wcpcpy_chk(wchar_t * dest,const wchar_t * src,size_t destlen)26 __wcpcpy_chk (wchar_t *dest, const wchar_t *src, size_t destlen)
27 {
28 do
29 if (destlen-- == 0)
30 __chk_fail ();
31 while ((*dest++ = *src++));
32
33 return dest - 1;
34 }
35