Language/Classes/Constructors/Factories/function_type_t01.dart

// Copyright (c) 2011, 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.

/// @assertion It is a compile error if the function type of k' is not a
/// subtype of the type of k.
/// @description Checks that a compile error is produced if factory constructor
/// redirects to a constructor whose type is not a subtype of factory
/// constructor function type. Checks the case when constructor parameter types
/// are not assignable.
/// @author ilya


class F {
  factory F(x,[String y]) = C;
//                          ^
// [analyzer] unspecified
// [cfe] unspecified
}

class C implements F {
  C(x,[int? y]);
}

main() {
  new F(123);
}