1 /* $NetBSD: regfree.c,v 1.12 2000/01/22 22:19:17 mycroft Exp $ */ 2 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. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the University of 22 * California, Berkeley and its contributors. 23 * 4. Neither the name of the University nor the names of its contributors 24 * may be used to endorse or promote products derived from this software 25 * without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 37 * SUCH DAMAGE. 38 * 39 * @(#)regfree.c 8.3 (Berkeley) 3/20/94 40 */ 41 42 #include <sys/cdefs.h> 43 #if defined(LIBC_SCCS) && !defined(lint) 44 #if 0 45 static char sccsid[] = "@(#)regfree.c 8.3 (Berkeley) 3/20/94"; 46 #else 47 __RCSID("$NetBSD: regfree.c,v 1.12 2000/01/22 22:19:17 mycroft Exp $"); 48 #endif 49 #endif /* LIBC_SCCS and not lint */ 50 51 #include "namespace.h" 52 #include <sys/types.h> 53 54 #include <assert.h> 55 #include <regex.h> 56 #include <stdio.h> 57 #include <stdlib.h> 58 59 #ifdef __weak_alias 60 __weak_alias(regfree,_regfree) 61 #endif 62 63 #include "utils.h" 64 #include "regex2.h" 65 66 /* 67 - regfree - free everything 68 = extern void regfree(regex_t *); 69 */ 70 void 71 regfree(preg) 72 regex_t *preg; 73 { 74 struct re_guts *g; 75 76 _DIAGASSERT(preg != NULL); 77 78 _DIAGASSERT(preg->re_magic == MAGIC1); 79 if (preg->re_magic != MAGIC1) /* oops */ 80 return; /* nice to complain, but hard */ 81 82 g = preg->re_g; 83 if (g == NULL || g->magic != MAGIC2) /* oops again */ 84 return; 85 preg->re_magic = 0; /* mark it invalid */ 86 g->magic = 0; /* mark it invalid */ 87 88 if (g->strip != NULL) 89 free(g->strip); 90 if (g->sets != NULL) 91 free(g->sets); 92 if (g->setbits != NULL) 93 free(g->setbits); 94 if (g->must != NULL) 95 free(g->must); 96 free(g); 97 } 98