1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 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 #if defined(LIBC_SCCS) && !defined(lint) 39 static char sccsid[] = "@(#)regfree.c 8.3 (Berkeley) 3/20/94"; 40 #endif /* LIBC_SCCS and not lint */ 41 #include <sys/cdefs.h> 42 #include <sys/types.h> 43 #include <stdio.h> 44 #include <stdlib.h> 45 #include <limits.h> 46 #include <regex.h> 47 #include <wchar.h> 48 #include <wctype.h> 49 50 #include "utils.h" 51 #include "regex2.h" 52 53 /* 54 - regfree - free everything 55 = extern void regfree(regex_t *); 56 */ 57 void 58 regfree(regex_t *preg) 59 { 60 struct re_guts *g; 61 unsigned int i; 62 63 if (preg->re_magic != MAGIC1) /* oops */ 64 return; /* nice to complain, but hard */ 65 66 g = preg->re_g; 67 if (g == NULL || g->magic != MAGIC2) /* oops again */ 68 return; 69 preg->re_magic = 0; /* mark it invalid */ 70 g->magic = 0; /* mark it invalid */ 71 72 if (g->strip != NULL) 73 free((char *)g->strip); 74 if (g->sets != NULL) { 75 for (i = 0; i < g->ncsets; i++) { 76 free(g->sets[i].ranges); 77 free(g->sets[i].wides); 78 free(g->sets[i].types); 79 } 80 free((char *)g->sets); 81 } 82 if (g->must != NULL) 83 free(g->must); 84 if (g->charjump != NULL) 85 free(&g->charjump[CHAR_MIN]); 86 if (g->matchjump != NULL) 87 free(g->matchjump); 88 free((char *)g); 89 } 90