- MFB (synch correctly not only for one problem)

Zend/zend_API.c

@@ -338,12 +338,13 @@ static char *zend_parse_arg_impl(zval **arg, va_list *va, char **spec TSRMLS_DC)
 						*pl = Z_STRLEN_PP(arg);
 						break;
 					case IS_OBJECT: {
-						SEPARATE_ZVAL_IF_NOT_REF(arg);
-						if (Z_OBJ_HANDLER_PP(arg, cast_object)
-							&& Z_OBJ_HANDLER_PP(arg, cast_object)(*arg, *arg, IS_STRING, 0 TSRMLS_CC) == SUCCESS) {
-							*pl = Z_STRLEN_PP(arg);
-							*p = Z_STRVAL_PP(arg);
-							break;
+						if (Z_OBJ_HANDLER_PP(arg, cast_object)) {
+							SEPARATE_ZVAL_IF_NOT_REF(arg);
+							if (Z_OBJ_HANDLER_PP(arg, cast_object)(*arg, *arg, IS_STRING, 0 TSRMLS_CC) == SUCCESS) {
+								*pl = Z_STRLEN_PP(arg);
+								*p = Z_STRVAL_PP(arg);
+								break;
+							}
 						}
 					}