1*0a6a1f1dSLionel Sambuc /* $NetBSD: reallocarray.c,v 1.5 2015/07/26 02:22:33 kamil Exp $ */
2*0a6a1f1dSLionel Sambuc /* $OpenBSD: reallocarray.c,v 1.1 2014/05/08 21:43:49 deraadt Exp $ */
3*0a6a1f1dSLionel Sambuc
4*0a6a1f1dSLionel Sambuc /*-
5*0a6a1f1dSLionel Sambuc * Copyright (c) 2015 The NetBSD Foundation, Inc.
6*0a6a1f1dSLionel Sambuc * All rights reserved.
7*0a6a1f1dSLionel Sambuc *
8*0a6a1f1dSLionel Sambuc * This code is derived from software contributed to The NetBSD Foundation
9*0a6a1f1dSLionel Sambuc * by Christos Zoulas.
10*0a6a1f1dSLionel Sambuc *
11*0a6a1f1dSLionel Sambuc * Redistribution and use in source and binary forms, with or without
12*0a6a1f1dSLionel Sambuc * modification, are permitted provided that the following conditions
13*0a6a1f1dSLionel Sambuc * are met:
14*0a6a1f1dSLionel Sambuc * 1. Redistributions of source code must retain the above copyright
15*0a6a1f1dSLionel Sambuc * notice, this list of conditions and the following disclaimer.
16*0a6a1f1dSLionel Sambuc * 2. Redistributions in binary form must reproduce the above copyright
17*0a6a1f1dSLionel Sambuc * notice, this list of conditions and the following disclaimer in the
18*0a6a1f1dSLionel Sambuc * documentation and/or other materials provided with the distribution.
19*0a6a1f1dSLionel Sambuc *
20*0a6a1f1dSLionel Sambuc * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21*0a6a1f1dSLionel Sambuc * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22*0a6a1f1dSLionel Sambuc * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23*0a6a1f1dSLionel Sambuc * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24*0a6a1f1dSLionel Sambuc * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25*0a6a1f1dSLionel Sambuc * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26*0a6a1f1dSLionel Sambuc * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27*0a6a1f1dSLionel Sambuc * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28*0a6a1f1dSLionel Sambuc * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29*0a6a1f1dSLionel Sambuc * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30*0a6a1f1dSLionel Sambuc * POSSIBILITY OF SUCH DAMAGE.
31*0a6a1f1dSLionel Sambuc */
32*0a6a1f1dSLionel Sambuc
33*0a6a1f1dSLionel Sambuc #include <sys/cdefs.h>
34*0a6a1f1dSLionel Sambuc __RCSID("$NetBSD: reallocarray.c,v 1.5 2015/07/26 02:22:33 kamil Exp $");
35*0a6a1f1dSLionel Sambuc
36*0a6a1f1dSLionel Sambuc #define _OPENBSD_SOURCE
37*0a6a1f1dSLionel Sambuc #include <errno.h>
38*0a6a1f1dSLionel Sambuc #include <stdlib.h>
39*0a6a1f1dSLionel Sambuc
40*0a6a1f1dSLionel Sambuc void *
reallocarray(void * optr,size_t nmemb,size_t size)41*0a6a1f1dSLionel Sambuc reallocarray(void *optr, size_t nmemb, size_t size)
42*0a6a1f1dSLionel Sambuc {
43*0a6a1f1dSLionel Sambuc if (nmemb == 0 || size == 0)
44*0a6a1f1dSLionel Sambuc return realloc(optr, 0);
45*0a6a1f1dSLionel Sambuc
46*0a6a1f1dSLionel Sambuc int e = reallocarr(&optr, nmemb, size);
47*0a6a1f1dSLionel Sambuc
48*0a6a1f1dSLionel Sambuc if (e == 0)
49*0a6a1f1dSLionel Sambuc return optr;
50*0a6a1f1dSLionel Sambuc errno = e;
51*0a6a1f1dSLionel Sambuc return NULL;
52*0a6a1f1dSLionel Sambuc }
53