Ticket #11373: 11373.diff

wp-includes/post.php

@@ -2104 +2104 @@
                 $path = '/' . $leaf_path;
                 $curpage = $page;
                 while ($curpage->post_parent != 0) {
-                        $curpage = $wpdb->get_row( $wpdb->prepare( "SELECT ID, post_name, post_parent FROM $wpdb->posts WHERE ID = %d and post_type='page'", $curpage->post_parent ));
+                        $post_parent = $curpage->post_parent;
+                        $curpage = wp_cache_get($post_parent, 'posts');
+                        if ( $curpage === false)
+                                $curpage = $wpdb->get_row( $wpdb->prepare( "SELECT ID, post_name, post_parent FROM $wpdb->posts WHERE ID = %d and post_type='page'", $post_parent ));
                         $path = '/' . $curpage->post_name . $path;
                 }