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2b778ceb | 1 | /* Copyright (C) 1995-2021 Free Software Foundation, Inc. |
8215c9ec UD |
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 | |
59ba27a6 | 16 | License along with the GNU C Library; if not, see |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
8215c9ec UD |
18 | |
19 | #include <stddef.h> | |
20 | #include <wchar.h> | |
21 | ||
22 | ||
23 | /* Copy SRC to DEST. */ | |
24 | wchar_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 | { | |
a1ffb40e | 38 | if (__glibc_unlikely (n-- == 0)) |
8215c9ec UD |
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 | { | |
a1ffb40e | 51 | if (__glibc_unlikely (n-- == 0)) |
8215c9ec UD |
52 | __chk_fail (); |
53 | c = *src++; | |
54 | *wcp++ = c; | |
55 | } | |
56 | while (c != L'\0'); | |
57 | } | |
58 | ||
59 | return dest; | |
60 | } |