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Annotation of src/lib/libc/regex/regfree.c, Revision 1.10

1.10    ! lukem       1: /*     $NetBSD: regfree.c,v 1.9 1998/12/08 13:49:46 drochner Exp $     */
1.4       cgd         2:
1.3       cgd         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:
1.5       christos   42: #include <sys/cdefs.h>
1.3       cgd        43: #if defined(LIBC_SCCS) && !defined(lint)
1.4       cgd        44: #if 0
1.3       cgd        45: static char sccsid[] = "@(#)regfree.c  8.3 (Berkeley) 3/20/94";
1.4       cgd        46: #else
1.10    ! lukem      47: __RCSID("$NetBSD: regfree.c,v 1.9 1998/12/08 13:49:46 drochner Exp $");
1.4       cgd        48: #endif
1.3       cgd        49: #endif /* LIBC_SCCS and not lint */
                     50:
1.6       jtc        51: #include "namespace.h"
1.1       jtc        52: #include <sys/types.h>
1.10    ! lukem      53:
        !            54: #include <assert.h>
        !            55: #include <regex.h>
1.1       jtc        56: #include <stdio.h>
                     57: #include <stdlib.h>
1.6       jtc        58:
                     59: #ifdef __weak_alias
                     60: __weak_alias(regfree,_regfree);
                     61: #endif
1.1       jtc        62:
                     63: #include "utils.h"
                     64: #include "regex2.h"
                     65:
                     66: /*
                     67:  - regfree - free everything
1.2       jtc        68:  = extern void regfree(regex_t *);
1.1       jtc        69:  */
                     70: void
                     71: regfree(preg)
                     72: regex_t *preg;
                     73: {
1.7       perry      74:        struct re_guts *g;
1.1       jtc        75:
1.10    ! lukem      76:        _DIAGASSERT(preg != NULL);
        !            77: #ifdef _DIAGNOSTIC
        !            78:        if (preg == NULL)
        !            79:                return;
        !            80: #endif
        !            81:
        !            82:        _DIAGASSERT(preg->re_magic == MAGIC1);
1.1       jtc        83:        if (preg->re_magic != MAGIC1)   /* oops */
                     84:                return;                 /* nice to complain, but hard */
                     85:
                     86:        g = preg->re_g;
                     87:        if (g == NULL || g->magic != MAGIC2)    /* oops again */
                     88:                return;
                     89:        preg->re_magic = 0;             /* mark it invalid */
                     90:        g->magic = 0;                   /* mark it invalid */
                     91:
                     92:        if (g->strip != NULL)
1.8       christos   93:                free(g->strip);
1.1       jtc        94:        if (g->sets != NULL)
1.8       christos   95:                free(g->sets);
1.1       jtc        96:        if (g->setbits != NULL)
1.9       drochner   97:                free(g->setbits);
1.1       jtc        98:        if (g->must != NULL)
                     99:                free(g->must);
1.8       christos  100:        free(g);
1.1       jtc       101: }

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