/* # safe-free.c: free with error checking. # # Copyright (C) 1992, 2011 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 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 . # */ #include "config.h" /* `free' itself does not return an error status. So all we can do here is check for nulls. */ void safe_free (address *item) { if (item == NULL || *item == NULL) { fprintf (stderr, "safe_free: Attempt to free a null item.\n"); abort (); } free (*item); *item = NULL; }