563 filter_add(char **filt, char *what, uintptr_t base, uintptr_t size)  in filter_add()  argument
568 	if (*filt == NULL) {  in filter_add()
569 		*filt = malloc(1);  in filter_add()
570 		*filt[0] = '\0';  in filter_add()
573 	(void) sprintf(c, "%s(%s >= 0x%p && %s < 0x%p)", *filt[0] != '\0' ?  in filter_add()
576 	newlen = (len = strlen(*filt) + 1) + strlen(c);  in filter_add()
578 	bcopy(*filt, new, len);  in filter_add()
580 	free(*filt);  in filter_add()
581 	*filt = new;  in filter_add()
585 filter_destroy(char **filt)  in filter_destroy()  argument
587 	free(*filt);  in filter_destroy()
588 	*filt = NULL;  in filter_destroy()
1032 	char *filt = NULL, *ifilt = NULL;  in main()  local
1143 				filter_add(&filt, "arg0", addr, size);  in main()
1145 				filter_add(&filt, "caller", addr, size);  in main()
1244 	if (filt != NULL) {  in main()
1245 		predicate_add(&g_predicate, filt, NULL, 0);  in main()
1246 		filter_destroy(&filt);  in main()