1/* Copyright (C) 1991-2020 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#include <string.h>
19
20#ifndef STRNCAT
21# undef strncat
22# define STRNCAT strncat
23# define STRNCAT_PRIMARY
24#endif
25
26char *
27STRNCAT (char *s1, const char *s2, size_t n)
28{
29 char *s = s1;
30
31 /* Find the end of S1. */
32 s1 += strlen (s1);
33
34 size_t ss = __strnlen (s2, n);
35
36 s1[ss] = '\0';
37 memcpy (s1, s2, ss);
38
39 return s;
40}
41#ifdef STRNCAT_PRIMARY
42strong_alias (STRNCAT, __strncat)
43libc_hidden_def (__strncat)
44#endif
45