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regfree.c revision 1.1 
      1 #include <sys/types.h>
      2 #include <stdio.h>
      3 #include <stdlib.h>
      4 #include <regex.h>
      5 
      6 #include "utils.h"
      7 #include "regex2.h"
      8 
      9 /*
     10  - regfree - free everything
     11  = extern void regfree(regex_t *preg);
     12  */
     13 void
     14 regfree(preg)
     15 regex_t *preg;
     16 {
     17 	register struct re_guts *g;
     18 
     19 	if (preg->re_magic != MAGIC1)	/* oops */
     20 		return;			/* nice to complain, but hard */
     21 
     22 	g = preg->re_g;
     23 	if (g == NULL || g->magic != MAGIC2)	/* oops again */
     24 		return;
     25 	preg->re_magic = 0;		/* mark it invalid */
     26 	g->magic = 0;			/* mark it invalid */
     27 
     28 	if (g->strip != NULL)
     29 		free((char *)g->strip);
     30 	if (g->sets != NULL)
     31 		free((char *)g->sets);
     32 	if (g->setbits != NULL)
     33 		free((char *)g->setbits);
     34 	if (g->must != NULL)
     35 		free(g->must);
     36 	free((char *)g);
     37 }
     38