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1/* calloc() function that is glibc compatible.
2 This wrapper function is required at least on Tru64 UNIX 5.1 and mingw.
3 Copyright (C) 2004-2007, 2009-2023 Free Software Foundation, Inc.
4
5 This file is free software: you can redistribute it and/or modify
6 it under the terms of the GNU Lesser General Public License as
7 published by the Free Software Foundation; either version 2.1 of the
8 License, or (at your option) any later version.
9
10 This file is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public License
16 along with this program. If not, see <https://www.gnu.org/licenses/>. */
17
18/* written by Jim Meyering and Bruno Haible */
19
20#include <config.h>
21
22/* Specification. */
23#include <stdlib.h>
24
25#include <errno.h>
26
27#include "xalloc-oversized.h"
28
29/* Call the system's calloc below. */
30#undef calloc
31
32/* Allocate and zero-fill an NxS-byte block of memory from the heap,
33 even if N or S is zero. */
34
35void *
36rpl_calloc (size_t n, size_t s)
37{
38 if (n == 0 || s == 0)
39 n = s = 1;
40
41 if (xalloc_oversized (n, s))
42 {
43 errno = ENOMEM;
44 return NULL;
45 }
46
47 void *result = calloc (n, s);
48
49#if !HAVE_MALLOC_POSIX
50 if (result == NULL)
51 errno = ENOMEM;
52#endif
53
54 return result;
55}