/* realloc() function that is glibc compatible.
Copyright (C) 1997, 2003-2004, 2006-2007, 2009-2010 Free Software
Foundation, Inc.
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
/* written by Jim Meyering and Bruno Haible */
#include <config.h>
/* Only the AC_FUNC_REALLOC macro defines 'realloc' already in config.h. */
#ifdef realloc
/* Whereas the gnulib module 'realloc-gnu' defines HAVE_REALLOC_GNU. */
#endif
/* Infer the properties of the system's malloc function.
The gnulib module 'malloc-gnu' defines HAVE_MALLOC_GNU. */
#if GNULIB_MALLOC_GNU && HAVE_MALLOC_GNU
#endif
/* Below we want to call the system's malloc and realloc.
Undefine the symbols here so that including <stdlib.h> provides a
declaration of malloc(), not of rpl_malloc(), and likewise for realloc. */
/* Specification. */
#include <stdlib.h>
#include <errno.h>
/* Below we want to call the system's malloc and realloc.
Undefine the symbols, if they were defined by gnulib's <stdlib.h>
replacement. */
/* Change the size of an allocated block of memory P to N bytes,
with error checking. If N is zero, change it to 1. If P is NULL,
use malloc. */
void *
{
void *result;
#if NEED_REALLOC_GNU
if (n == 0)
{
n = 1;
/* In theory realloc might fail, so don't rely on it to free. */
free (p);
p = NULL;
}
#endif
if (p == NULL)
{
if (n == 0)
n = 1;
#endif
}
else
#if !HAVE_REALLOC_POSIX
#endif
return result;
}