/* realloc() function that is glibc compatible. Copyright (C) 1997, 2003, 2004, 2006, 2007 Free Software Foundation, Inc. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, 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, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ /* written by Jim Meyering and Bruno Haible */ #include /* Only the AC_FUNC_REALLOC macro defines 'realloc' already in config.h. */ #ifdef realloc # define NEED_REALLOC_GNU # undef realloc #endif /* Specification. */ #include #include /* Call the system's malloc and realloc below. */ #undef malloc #undef realloc /* 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 * rpl_realloc (void *p, size_t n) { void *result; #ifdef 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 result = (p == NULL ? malloc (n) : realloc (p, n)); #if !HAVE_REALLOC_POSIX if (result == NULL) errno = ENOMEM; #endif return result; }