// Copyright (c) 2019, the Dart project authors. Please see the AUTHORS file | |
// for details. All rights reserved. Use of this source code is governed by a | |
// BSD-style license that can be found in the LICENSE file. | |
// SharedOptions=--enable-experiment=non-nullable | |
void f(Object x) { | |
do { | |
x.length; //# 01: compile-time error | |
} while (x is! String); | |
x.length; //# 02: ok | |
} | |
void main() {} |