1/*	$OpenBSD: regfree.c,v 1.7 2005/08/05 13:03:00 espie Exp $ */
2/*-
3 * Copyright (c) 1992, 1993, 1994 Henry Spencer.
4 * Copyright (c) 1992, 1993, 1994
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * Henry Spencer.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 *    may be used to endorse or promote products derived from this software
20 *    without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 *	@(#)regfree.c	8.3 (Berkeley) 3/20/94
35 */
36
37#include <sys/types.h>
38#include <stdio.h>
39#include <stdlib.h>
40#include <regex.h>
41
42#include "utils.h"
43#include "regex2.h"
44
45/*
46 - regfree - free everything
47 */
48void
49regfree(regex_t *preg)
50{
51	struct re_guts *g;
52
53	if (preg->re_magic != MAGIC1)	/* oops */
54		return;			/* nice to complain, but hard */
55
56	g = preg->re_g;
57	if (g == NULL || g->magic != MAGIC2)	/* oops again */
58		return;
59	preg->re_magic = 0;		/* mark it invalid */
60	g->magic = 0;			/* mark it invalid */
61
62	if (g->strip != NULL)
63		free((char *)g->strip);
64	if (g->sets != NULL)
65		free((char *)g->sets);
66	if (g->setbits != NULL)
67		free((char *)g->setbits);
68	if (g->must != NULL)
69		free(g->must);
70	free((char *)g);
71}
72