1 /* $NetBSD: regfree.c,v 1.15 2007/02/09 23:44:18 junyoung Exp $ */
2
3 /*-
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 /*-
38 * Copyright (c) 1992, 1993, 1994 Henry Spencer.
39 *
40 * This code is derived from software contributed to Berkeley by
41 * Henry Spencer.
42 *
43 * Redistribution and use in source and binary forms, with or without
44 * modification, are permitted provided that the following conditions
45 * are met:
46 * 1. Redistributions of source code must retain the above copyright
47 * notice, this list of conditions and the following disclaimer.
48 * 2. Redistributions in binary form must reproduce the above copyright
49 * notice, this list of conditions and the following disclaimer in the
50 * documentation and/or other materials provided with the distribution.
51 * 3. All advertising materials mentioning features or use of this software
52 * must display the following acknowledgement:
53 * This product includes software developed by the University of
54 * California, Berkeley and its contributors.
55 * 4. Neither the name of the University nor the names of its contributors
56 * may be used to endorse or promote products derived from this software
57 * without specific prior written permission.
58 *
59 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
60 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
61 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
62 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
63 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
64 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
65 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
66 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
67 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
68 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
69 * SUCH DAMAGE.
70 *
71 * @(#)regfree.c 8.3 (Berkeley) 3/20/94
72 */
73
74 #include <sys/cdefs.h>
75 #if defined(LIBC_SCCS) && !defined(lint)
76 #if 0
77 static char sccsid[] = "@(#)regfree.c 8.3 (Berkeley) 3/20/94";
78 #else
79 __RCSID("$NetBSD: regfree.c,v 1.15 2007/02/09 23:44:18 junyoung Exp $");
80 #endif
81 #endif /* LIBC_SCCS and not lint */
82
83 #include "namespace.h"
84 #include <sys/types.h>
85
86 #include <assert.h>
87 #include <stdio.h>
88 #include <stdlib.h>
89 #include <regex.h>
90
91 #ifdef __weak_alias
__weak_alias(regfree,_regfree)92 __weak_alias(regfree,_regfree)
93 #endif
94
95 #include "utils.h"
96 #include "regex2.h"
97
98 /*
99 - regfree - free everything
100 = extern void regfree(regex_t *);
101 */
102 void
103 regfree(
104 regex_t *preg)
105 {
106 struct re_guts *g;
107
108 _DIAGASSERT(preg != NULL);
109
110 _DIAGASSERT(preg->re_magic == MAGIC1);
111 if (preg->re_magic != MAGIC1) /* oops */
112 return; /* nice to complain, but hard */
113
114 g = preg->re_g;
115 if (g == NULL || g->magic != MAGIC2) /* oops again */
116 return;
117 preg->re_magic = 0; /* mark it invalid */
118 g->magic = 0; /* mark it invalid */
119
120 if (g->strip != NULL)
121 free(g->strip);
122 if (g->sets != NULL)
123 free(g->sets);
124 if (g->setbits != NULL)
125 free(g->setbits);
126 if (g->must != NULL)
127 free(g->must);
128 free(g);
129 }
130