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0d1b033387
Avoid free from a signal handler. * Makefile.in (xfree.o): Add readline.h. * xfree.c: Include stdio.h and readline.h. (xfree): Return on RL_STATE_SIGHANDLER. * xmalloc.h (xfree): New definition.
58 lines
1.6 KiB
C
58 lines
1.6 KiB
C
/* xfree.c -- safe version of free that ignores attempts to free NUL */
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/* Copyright (C) 1991-2010 Free Software Foundation, Inc.
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This file is part of the GNU Readline Library (Readline), a library
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for reading lines of text with interactive input and history editing.
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Readline is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Readline is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Readline. If not, see <http://www.gnu.org/licenses/>.
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*/
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#define READLINE_LIBRARY
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#if defined (HAVE_CONFIG_H)
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#include <config.h>
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#endif
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#if defined (HAVE_STDLIB_H)
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# include <stdlib.h>
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#else
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# include "ansi_stdlib.h"
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#endif /* HAVE_STDLIB_H */
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#include <stdio.h>
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#include "xmalloc.h"
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#include "readline.h"
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/* **************************************************************** */
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/* */
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/* Memory Deallocation. */
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/* */
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/* **************************************************************** */
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/* Use this as the function to call when adding unwind protects so we
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don't need to know what free() returns. */
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void
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xfree (string)
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PTR_T string;
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{
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/* Leak a bit. */
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if (RL_ISSTATE(RL_STATE_SIGHANDLER))
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return;
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if (string)
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free (string);
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}
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