/home/arjun/llvm-project/llvm/lib/Support/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 |
50 | | llvm_regfree(llvm_regex_t *preg) |
51 | 0 | { |
52 | 0 | struct re_guts *g; |
53 | 0 |
|
54 | 0 | if (preg->re_magic != MAGIC1) /* oops */ |
55 | 0 | return; /* nice to complain, but hard */ |
56 | 0 | |
57 | 0 | g = preg->re_g; |
58 | 0 | if (g == NULL || g->magic != MAGIC2) /* oops again */ |
59 | 0 | return; |
60 | 0 | preg->re_magic = 0; /* mark it invalid */ |
61 | 0 | g->magic = 0; /* mark it invalid */ |
62 | 0 |
|
63 | 0 | if (g->strip != NULL) |
64 | 0 | free((char *)g->strip); |
65 | 0 | if (g->sets != NULL) |
66 | 0 | free((char *)g->sets); |
67 | 0 | if (g->setbits != NULL) |
68 | 0 | free((char *)g->setbits); |
69 | 0 | if (g->must != NULL) |
70 | 0 | free(g->must); |
71 | 0 | free((char *)g); |
72 | 0 | } |