tests/language_2/regress_35259_test.dart

// Copyright (c) 2018, 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 Supertype {
  factory Supertype() = Unresolved; //# 01: compile-time error
  factory Supertype() = Unresolved; //# 01: compile-time error
}

main() {
  print(new Supertype());
}