pkg/front_end/testcases/shaker/transitive_superclass_lib.dart

// Copyright (c) 2017, 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.md file.

class _A {
  int field;
}

class B extends _A {
  int field;
}

class C extends B {
  int field;
}