/* xfree.c -- safe version of free that ignores attempts to free NUL */

/* Copyright (C) 1991-2010 Free Software Foundation, Inc.

   This file is part of the GNU Readline Library (Readline), a library

   for reading lines of text with interactive input and history editing.      

   Readline 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 3 of the License, or

   (at your option) any later version.

   Readline 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 Readline.  If not, see <http://www.gnu.org/licenses/>.

*/

#define READLINE_LIBRARY

#if defined (HAVE_CONFIG_H)

#include <config.h>

#endif

#if defined (HAVE_STDLIB_H)

#  include <stdlib.h>

#else

#  include "ansi_stdlib.h"

#endif /* HAVE_STDLIB_H */

#include <stdio.h>

#include "xmalloc.h"

#include "readline.h"

/* **************************************************************** */

/*								    */

/*		   Memory Deallocation.				    */

/*								    */

/* **************************************************************** */

/* Use this as the function to call when adding unwind protects so we

   don't need to know what free() returns. */

void

xfree (string)

     PTR_T string;

{

  /* Leak a bit.  */

  if (RL_ISSTATE(RL_STATE_SIGHANDLER))

    return;

  if (string)

    free (string);

}