// Copyright (c) 2020, 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 | |
abstract class A<T> { | |
foo(T x); | |
} | |
abstract class B<T> implements A<T> {} | |
class C { | |
foo(num x) {} | |
} | |
class D<T extends num> extends C with B<T> {} | |
class E<T extends num> = C with B<T>; | |
main() {} |