Ticket #17118: 17118.3.diff

wp-includes/query.php

@@ -2462 +2462 @@
 
                 // Parse the meta query again if query vars have changed.
                 if ( $this->query_vars_changed ) {
-                        $meta_query_hash = md5( serialize( $q['meta_query'] ) );
-                        $_meta_query = $q['meta_query'];
-                        unset( $q['meta_query'] );
+                        if ( isset( $q['meta_query'] ) ) {
+                                $meta_query_hash = md5( serialize( $q['meta_query'] ) );
+                                $_meta_query = $q['meta_query'];
+                                unset( $q['meta_query'] );
+                        } else {
+                                $meta_query_hash = false;
+                                $_meta_query = array();
+                        }
                         _parse_meta_query( $q );
                         if ( md5( serialize( $q['meta_query'] ) ) != $meta_query_hash && is_array( $_meta_query ) )
                                 $q['meta_query'] = array_merge( $_meta_query, $q['meta_query'] );