1 /* $OpenBSD: regfree.c,v 1.11 2015/12/28 22:27:03 mmcc Exp $ */ 2 /*- 3 * Copyright (c) 1992, 1993, 1994 Henry Spencer. 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 #include <sys/types.h> 38 #include <stdio.h> 39 #include <stdlib.h> 40 #include <regex.h> 41 #include <limits.h> 42 43 #include "utils.h" 44 #include "regex2.h" 45 46 /* 47 - regfree - free everything 48 */ 49 void 50 regfree(regex_t *preg) 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 free(g->strip); 64 free(g->sets); 65 free(g->setbits); 66 free(g->must); 67 free(g); 68 } 69 DEF_WEAK(regfree); 70