- Check for NULL tree->delete callback

- Add xstrdup() function

lib/rbl.c

@@ -17,13 +17,16 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: rbl.c,v 1.1.2.8 2000/11/20 19:12:10 guus Exp $
+    $Id: rbl.c,v 1.1.2.9 2000/11/21 09:13:59 guus Exp $
 */
 
+#include "config.h"
+
 #include <stdlib.h>
 #include <xalloc.h>
 
 #include "rbl.h"
+#include <system.h>
 
 /* Allocate a new rbl node */
 rbl_t *new_rbl()
@@ -34,6 +37,8 @@ rbl_t *new_rbl()
 /* Free a rbl node */
 void free_rbl(rbl_t *rbl)
 {
+  if(rbl->data && rbl->tree->delete)
+    rbl->tree->delete(rbl->data);
   free(rbl);
 }
 
@@ -507,7 +512,8 @@ void rbl_delete_rbltree(rbltree_t *tree)
   for(rbl = tree->head; rbl; rbl = next)
     {
       next = rbl->next;
-      tree->delete(rbl->data);
+      if(tree->delete)
+        tree->delete(rbl->data);
     }
 
   tree->top = NULL;

lib/xalloc.h

@@ -22,3 +22,5 @@ void *xmalloc PARAMS ((size_t n));
 void *xmalloc_and_zero PARAMS ((size_t n));
 void *xcalloc PARAMS ((size_t n, size_t s));
 void *xrealloc PARAMS ((void *p, size_t n));
+
+char *xstrdup PARAMS ((char *s));

lib/xmalloc.c

@@ -21,6 +21,7 @@
 
 #include <sys/types.h>
 #include <stdio.h>
+#include <string.h>
 
 #if STDC_HEADERS
 # include <stdlib.h>
@@ -124,6 +125,18 @@ xrealloc (p, n)
   return p;
 }
 
+/* Duplicate a string */
+
+char *xstrdup(char *s)
+{
+  char *p;
+  
+  p = strdup(s);
+  if(!p)
+    xalloc_fail ((int)strlen(s));
+  return p;
+}
+
 #ifdef NOT_USED
 
 /* Allocate memory for N elements of S bytes, with error checking.  */