gnu/dist/diffutils/lib/realloc.c

   1 /*      $NetBSD$        */
   2
   3 /* Work around bug on some systems where realloc (NULL, 0) fails.
   4    Copyright (C) 1997 Free Software Foundation, Inc.
   5
   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 2, or (at your option)
   9    any later version.
  10
  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.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, write to the Free Software Foundation,
  18    Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  19
  20 /* written by Jim Meyering */
  21
  22 #if HAVE_CONFIG_H
  23 # include <config.h>
  24 #endif
  25 #undef realloc
  26
  27 #include <sys/types.h>
  28
  29 char *malloc ();
  30 char *realloc ();
  31
  32 /* Change the size of an allocated block of memory P to N bytes,
  33    with error checking.  If N is zero, change it to 1.  If P is NULL,
  34    use malloc.  */
  35
  36 char *
  37 rpl_realloc (p, n)
  38      char *p;
  39      size_t n;
  40 {
  41   if (n == 0)
  42     n = 1;
  43   if (p == 0)
  44     return malloc (n);
  45   return realloc (p, n);
  46 }