pkg/front_end/testcases/enhanced_enums/enum_as_supertype_error.dart

// Copyright (c) 2022, 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.

class A extends Enum { // Error.
  int get foo => index;
}

class B implements Enum { // Error.
  int get foo => index;
}

main() {}