text: /* Copyright (c) 1992, 1993, 1994 Henry Spencer.
   * Copyright (c) 1992, 1993, 1994
   *	The Regents of the University of California.  All rights reserved.
   *
   * This code is derived from software contributed to Berkeley by
   * Henry Spencer.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *  * Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   *  * Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   *  * Neither the name of the University nor the names of its contributors
   *    may be used to endorse or promote products derived from this software
   *    without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   *
   *	@(#)regfree.c	8.3 (Berkeley) 3/20/94
   */
  
  #if defined(LIBC_SCCS) && !defined(lint)
  #if 0
  static char sccsid[] = "@(#)regfree.c	8.3 (Berkeley) 3/20/94";
  #else
  static char rcsid[] = "$NetBSD: regfree.c,v 1.4 1995/02/27 13:29:56 cgd Exp $";
  #endif
  #endif /* LIBC_SCCS and not lint */
  
  #include "regex.h"
  #include "./utils.h"
  #include "./regex2.h"
  
  /*
   - regfree - free everything
   = extern void regfree(regex_t *);
   */
  void
  regfree(preg)
  regex_t *preg;
  {
  	register struct re_guts *g;
  
  	if (preg->re_magic != MAGIC1)	/* oops */
  		return;			/* nice to complain, but hard */
  
  	g = preg->re_g;
  	if (g == NULL || g->magic != MAGIC2)	/* oops again */
  		return;
  	preg->re_magic = 0;		/* mark it invalid */
  	g->magic = 0;			/* mark it invalid */
  
  	if (g->strip != NULL)
  		free((char *)g->strip);
  	if (g->sets != NULL)
  		free((char *)g->sets);
  	if (g->setbits != NULL)
  		free((char *)g->setbits);
  	if (g->must != NULL)
  		free(g->must);
  	free((char *)g);
  }
  