Language/Expressions/Booleans/extend_or_implement_t01.dart

// Copyright (c) 2011, 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 It is a compile-time error for a class to attempt to extend,
/// mix in or implement bool.
/// @description Checks that it is a compile-time error when a user-defined
/// interface attempts to extend bool.
/// @compile-error
/// @author msyabro


abstract class I extends bool {}
class C implements I {}

main() {
  try {
    new C();
  } catch (e) {}
}