Language/Classes/Superinterfaces/more_than_once_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 if the implements clause of a class
 * C specifies a type T as a superinterface more than once.
 * @description Checks that it is a compile-time error if the same type appears
 * more than once in the implements clause.
 * @compile-error
 * @author pagolubev
 */

abstract class I {}
abstract class J {}

class A implements I, J, I {}

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