// Copyright (c) 2021, 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 | |
class A { | |
bool operator ==(covariant A other) => true; | |
} | |
class B extends A { | |
bool operator ==(other) => true; | |
} | |
class C<T> { | |
bool operator ==(covariant C<T> other) => true; | |
} | |
class D extends C<int> {} | |
main() {} |