LanguageFeatures/Constant-update-2018/CastOperator_A03_t03.dart

/*
 * 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.
 */
/**
 * @assertion An expression of the form [e as T] is accepted as a potentially
 * and compile-time constant expression if [e] is potentially constant or
 * compile-time constant, respectively, and [T] is a compile-time constant type.
 * A compile-time constant type means any type that doesn't contain free type
 * variables, so the type expression always resolves to the exact same type.
 * @description Checks that an expression of the form [e as T] is not accepted
 * and causes compile time error if parameter type is incorrect.
 * @compile-error
 * @author iarkh@unipro.ru
 */
// SharedOptions=--enable-experiment=constant-update-2018
dynamic anObject = "";

class MyClass {
  final String obj;
  const MyClass(Object o) : obj = o as String;
}

main() {
  const MyClass c = MyClass(anObject);
}