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authorcvs2svn <admin@example.com>2023-07-15 19:29:46 +0000
committercvs2svn <admin@example.com>2023-07-15 19:29:46 +0000
commit72cc860132e5b7971e495ba621dcd0713b5dd801 (patch)
treeeb2977d6a31db45cc5481c643fa2a77238fa93bb /src/lib/libc/stdlib/reallocarray.c
parent0d87a20f1d7f7c6ae9a6cbb5bc3c2235ee3fe18a (diff)
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This commit was manufactured by cvs2git to create tag 'tb_20230715'.tb_20230715
Diffstat (limited to 'src/lib/libc/stdlib/reallocarray.c')
-rw-r--r--src/lib/libc/stdlib/reallocarray.c39
1 files changed, 0 insertions, 39 deletions
diff --git a/src/lib/libc/stdlib/reallocarray.c b/src/lib/libc/stdlib/reallocarray.c
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index baea252a87..0000000000
--- a/src/lib/libc/stdlib/reallocarray.c
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@@ -1,39 +0,0 @@
1/* $OpenBSD: reallocarray.c,v 1.3 2015/09/13 08:31:47 guenther Exp $ */
2/*
3 * Copyright (c) 2008 Otto Moerbeek <otto@drijf.net>
4 *
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 */
17
18#include <sys/types.h>
19#include <errno.h>
20#include <stdint.h>
21#include <stdlib.h>
22
23/*
24 * This is sqrt(SIZE_MAX+1), as s1*s2 <= SIZE_MAX
25 * if both s1 < MUL_NO_OVERFLOW and s2 < MUL_NO_OVERFLOW
26 */
27#define MUL_NO_OVERFLOW ((size_t)1 << (sizeof(size_t) * 4))
28
29void *
30reallocarray(void *optr, size_t nmemb, size_t size)
31{
32 if ((nmemb >= MUL_NO_OVERFLOW || size >= MUL_NO_OVERFLOW) &&
33 nmemb > 0 && SIZE_MAX / nmemb < size) {
34 errno = ENOMEM;
35 return NULL;
36 }
37 return realloc(optr, size * nmemb);
38}
39DEF_WEAK(reallocarray);