1/* Copyright (C) 1995-2020 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19#include <stddef.h>
20#include <wchar.h>
21
22
23/* Copy SRC to DEST. */
24wchar_t *
25__wcscpy_chk (wchar_t *dest, const wchar_t *src, size_t n)
26{
27 wint_t c;
28 wchar_t *wcp;
29
30 if (__alignof__ (wchar_t) >= sizeof (wchar_t))
31 {
32 const ptrdiff_t off = dest - src - 1;
33
34 wcp = (wchar_t *) src;
35
36 do
37 {
38 if (__glibc_unlikely (n-- == 0))
39 __chk_fail ();
40 c = *wcp++;
41 wcp[off] = c;
42 }
43 while (c != L'\0');
44 }
45 else
46 {
47 wcp = dest;
48
49 do
50 {
51 if (__glibc_unlikely (n-- == 0))
52 __chk_fail ();
53 c = *src++;
54 *wcp++ = c;
55 }
56 while (c != L'\0');
57 }
58
59 return dest;
60}
61