Ticket #2801: 2801.diff

wp-includes/link-template.php

@@ -168 +168 @@
                 else
                         $parentlink = get_permalink( $object->post_parent );
                 if (strpos($parentlink, '?') === false)
-                        $link = trim($parentlink, '/') . '/' . $object->post_name . '/';
+                        $link = rtrim($parentlink, '/') . '/' . $object->post_name . '/';
         }
 
         if (! $link ) {