LLVM  9.0.0svn
regfree.c
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1 /*-
2  * This code is derived from OpenBSD's libc/regex, original license follows:
3  *
4  * Copyright (c) 1992, 1993, 1994 Henry Spencer.
5  * Copyright (c) 1992, 1993, 1994
6  * The Regents of the University of California. All rights reserved.
7  *
8  * This code is derived from software contributed to Berkeley by
9  * Henry Spencer.
10  *
11  * Redistribution and use in source and binary forms, with or without
12  * modification, are permitted provided that the following conditions
13  * are met:
14  * 1. Redistributions of source code must retain the above copyright
15  * notice, this list of conditions and the following disclaimer.
16  * 2. Redistributions in binary form must reproduce the above copyright
17  * notice, this list of conditions and the following disclaimer in the
18  * documentation and/or other materials provided with the distribution.
19  * 3. Neither the name of the University nor the names of its contributors
20  * may be used to endorse or promote products derived from this software
21  * without specific prior written permission.
22  *
23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26  * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33  * SUCH DAMAGE.
34  *
35  * @(#)regfree.c 8.3 (Berkeley) 3/20/94
36  */
37 
38 #include <sys/types.h>
39 #include <stdio.h>
40 #include <stdlib.h>
41 #include "regex_impl.h"
42 
43 #include "regutils.h"
44 #include "regex2.h"
45 
46 /*
47  - llvm_regfree - free everything
48  */
49 void
51 {
52  struct re_guts *g;
53 
54  if (preg->re_magic != MAGIC1) /* oops */
55  return; /* nice to complain, but hard */
56 
57  g = preg->re_g;
58  if (g == NULL || g->magic != MAGIC2) /* oops again */
59  return;
60  preg->re_magic = 0; /* mark it invalid */
61  g->magic = 0; /* mark it invalid */
62 
63  if (g->strip != NULL)
64  free((char *)g->strip);
65  if (g->sets != NULL)
66  free((char *)g->sets);
67  if (g->setbits != NULL)
68  free((char *)g->setbits);
69  if (g->must != NULL)
70  free(g->must);
71  free((char *)g);
72 }
#define MAGIC2
Definition: regex2.h:134
sop * strip
Definition: regex2.h:135
int re_magic
Definition: regex_impl.h:49
char * must
Definition: regex2.h:152
#define MAGIC1
Definition: regex2.h:47
uch * setbits
Definition: regex2.h:139
struct re_guts * re_g
Definition: regex_impl.h:52
cset * sets
Definition: regex2.h:138
void llvm_regfree(llvm_regex_t *preg)
Definition: regfree.c:50
int magic
Definition: regex2.h:133