/* 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); }