// 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.

// @dart = 2.9

/// @assertion The type parameters of a generic G are in scope in the bounds of
/// all of the type parameters of G. The type parameters of a generic class
/// declaration G are also in scope in the extends and implements clauses of G
/// (if these exist) and in the body of G.
/// @description Checks that type parameters are in scope in the extends and
/// implements clauses of G (if G is a generic class declaration).
/// @issue 29388
/// @author iefremov

class C<T, U> {}

class A<N, S, U> extends C<S, U> implements I<S, U, N>
{ }

abstract class J<U, V> {}

abstract class I<X, Y, Z> extends J<Y, Z>
{ }

main() {
  new A<num, double, A>();
}