1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
| | /* realloc() function that is glibc compatible.
Copyright (C) 1997, 2003-2004, 2006-2007, 2009-2021 Free Software
Foundation, Inc.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* written by Jim Meyering and Bruno Haible */
#include <config.h>
#include <stdlib.h>
#include <errno.h>
#include "xalloc-oversized.h"
/* Call the system's realloc below. This file does not define
_GL_USE_STDLIB_ALLOC because it needs Gnulib's malloc if present. */
#undef realloc
/* Change the size of an allocated block of memory P to N bytes,
with error checking. If P is NULL, use malloc. Otherwise if N is zero,
free P and return NULL. */
void *
rpl_realloc (void *p, size_t n)
{
if (p == NULL)
return malloc (n);
if (n == 0)
{
free (p);
return NULL;
}
if (xalloc_oversized (n, 1))
{
errno = ENOMEM;
return NULL;
}
void *result = realloc (p, n);
#if !HAVE_MALLOC_POSIX
if (result == NULL)
errno = ENOMEM;
#endif
return result;
}
|