Ticket #58234: 58234.diff

src/wp-includes/class-wp-query.php

@@ -2107 +2107 @@
 
                                 if ( ! $ptype_obj->hierarchical ) {
                                         // Non-hierarchical post types can directly use 'name'.
-                                        $q['name'] = $q[ $ptype_obj->query_var ];
+                                        $q['name'] = is_string( $q[ $ptype_obj->query_var ] ) ? $q[ $ptype_obj->query_var ] : '';
                                 } else {
                                         // Hierarchical post types will operate through 'pagename'.
-                                        $q['pagename'] = $q[ $ptype_obj->query_var ];
+                                        $q['pagename'] = is_string( $q[ $ptype_obj->query_var ] ) ? $q[ $ptype_obj->query_var ] : '';
                                         $q['name']     = '';
                                 }