1 /* realloc() function that is glibc compatible.
3 Copyright (C) 1997, 2003-2004, 2006-2007, 2009-2011 Free Software
6 This program is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>. */
19 /* written by Jim Meyering and Bruno Haible */
23 /* Only the AC_FUNC_REALLOC macro defines 'realloc' already in config.h. */
25 # define NEED_REALLOC_GNU 1
26 /* Whereas the gnulib module 'realloc-gnu' defines HAVE_REALLOC_GNU. */
27 #elif GNULIB_REALLOC_GNU && !HAVE_REALLOC_GNU
28 # define NEED_REALLOC_GNU 1
31 /* Infer the properties of the system's malloc function.
32 The gnulib module 'malloc-gnu' defines HAVE_MALLOC_GNU. */
33 #if GNULIB_MALLOC_GNU && HAVE_MALLOC_GNU
34 # define SYSTEM_MALLOC_GLIBC_COMPATIBLE 1
37 /* Below we want to call the system's malloc and realloc.
38 Undefine the symbols here so that including <stdlib.h> provides a
39 declaration of malloc(), not of rpl_malloc(), and likewise for realloc. */
48 /* Below we want to call the system's malloc and realloc.
49 Undefine the symbols, if they were defined by gnulib's <stdlib.h>
54 /* Change the size of an allocated block of memory P to N bytes,
55 with error checking. If N is zero, change it to 1. If P is NULL,
59 rpl_realloc (void *p
, size_t n
)
68 /* In theory realloc might fail, so don't rely on it to free. */
76 #if GNULIB_REALLOC_GNU && !NEED_REALLOC_GNU && !SYSTEM_MALLOC_GLIBC_COMPATIBLE
83 result
= realloc (p
, n
);
85 #if !HAVE_REALLOC_POSIX