GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libc/string/strncat.c Lines: 0 9 0.0 %
Date: 2017-11-13 Branches: 0 8 0.0 %

Line Branch Exec Source
1
/*	$OpenBSD: strncat.c,v 1.6 2015/08/31 02:53:57 guenther Exp $ */
2
/*-
3
 * Copyright (c) 1990 The Regents of the University of California.
4
 * All rights reserved.
5
 *
6
 * This code is derived from software contributed to Berkeley by
7
 * Chris Torek.
8
 *
9
 * Redistribution and use in source and binary forms, with or without
10
 * modification, are permitted provided that the following conditions
11
 * are met:
12
 * 1. Redistributions of source code must retain the above copyright
13
 *    notice, this list of conditions and the following disclaimer.
14
 * 2. Redistributions in binary form must reproduce the above copyright
15
 *    notice, this list of conditions and the following disclaimer in the
16
 *    documentation and/or other materials provided with the distribution.
17
 * 3. Neither the name of the University nor the names of its contributors
18
 *    may be used to endorse or promote products derived from this software
19
 *    without specific prior written permission.
20
 *
21
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31
 * SUCH DAMAGE.
32
 */
33
34
#include <string.h>
35
36
/*
37
 * Concatenate src on the end of dst.  At most strlen(dst)+n+1 bytes
38
 * are written at dst (at most n+1 bytes being appended).  Return dst.
39
 */
40
char *
41
strncat(char *dst, const char *src, size_t n)
42
{
43
	if (n != 0) {
44
		char *d = dst;
45
		const char *s = src;
46
47
		while (*d != 0)
48
			d++;
49
		do {
50
			if ((*d = *s++) == 0)
51
				break;
52
			d++;
53
		} while (--n != 0);
54
		*d = 0;
55
	}
56
	return (dst);
57
}
58
DEF_STRONG(strncat);