/* $Id: xrealloc 3.2.0.2 1998/07/26 10:55:18 stoklund Exp stoklund $ */
/* xrealloc.c: realloc with error checking.

   Copyright (C) 1992, 93 Free Software Foundation, Inc.

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License as published by the Free Software Foundation; either
   version 2 of the License, or (at your option) any later version.

   This library 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
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public
   License along with this library; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */

#include "kpathsea:config.h"

#ifdef KPSE_MEM_DEBUG
extern FILE *mlogfile;
void *
_xrealloc P4C (void *, old_ptr, unsigned, size, const_string, file, int, line)
#else
void *
xrealloc P2C (void *, old_ptr, unsigned, size)
#endif
{
  void *new_mem;

  if (old_ptr == NULL)
#ifdef KPSE_MEM_DEBUG
    new_mem = _xmalloc (size, file, line);
#else
    new_mem = xmalloc (size);
#endif
  else
    {
      new_mem = (void *) realloc (old_ptr, size);
      if (new_mem == NULL)
	{
	  fprintf (stderr, "fatal: memory exhausted (xrealloc of %u bytes).\n",
		   size);
#ifdef KPSE_MEM_DEBUG
	  if (file)
	    fprintf (stderr, "%s, line %d.\n", file, line);
#endif
	  exit (EXIT_FAILURE);
	}
    }

#ifdef KPSE_MEM_DEBUG
  fprintf(mlogfile, "%s: %d: realloc(%p,%d) => %p\n", file, line, old_ptr, size, new_mem);
#endif

  return new_mem;
}
