1 /*
2   (C) Copyright 2008
3   International Business Machines Corporation,
4   All rights reserved.
5 
6   Redistribution and use in source and binary forms, with or without
7   modification, are permitted provided that the following conditions are met:
8 
9     * Redistributions of source code must retain the above copyright notice,
10   this list of conditions and the following disclaimer.
11     * Redistributions in binary form must reproduce the above copyright
12   notice, this list of conditions and the following disclaimer in the
13   documentation and/or other materials provided with the distribution.
14     * Neither the names of the copyright holders nor the names of their
15   contributors may be used to endorse or promote products derived from this
16   software without specific prior written permission.
17 
18   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
19   AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20   IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21   ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
22   LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23   CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24   SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26   CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27   ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
28   POSSIBILITY OF SUCH DAMAGE.
29 */
30 #include <stddef.h>
31 #include <string.h>
32 #include "straddr.h"
33 #include "strcpy.h"
34 
35 /*
36  * Appends the string pointed to by src (up to and including the /0
37  * character) to the array pointed to by dest (overwriting the
38  * /0 character at the end of dest. The strings may not overlap and
39  * the dest string must have enough space for the result.
40  */
strncat(char * __restrict__ dest,const char * __restrict__ src,size_t n)41 char * strncat(char * __restrict__ dest, const char * __restrict__ src,
42                size_t n)
43 {
44   _strncpy(_straddr(dest), src, n, 1, 1);
45   return dest;
46 }
47