// 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.

/// @assertion It is an error if a class declaration declares an instance
/// variable with a potentially non-nullable type and no initializer expression,
/// and the class has a generative constructor where the variable is not
/// initialized via an initializing formal or an initializer list entry, unless
/// the variable is marked with the late modifier.
///
/// @description Check that it is not an error if a class declaration declares an
/// instance variable with a potentially non-nullable type and no initializer
/// expression, and the class has a generative constructor where the variable is
/// not initialized via an initializing formal or an initializer list entry, but
/// the variable is marked with the 'late' modifier. Test FutureOr<F> where F is
/// a function type
/// @author sgrekhov@unipro.ru

// Requirements=nnbd-weak
import "dart:async";
typedef void Foo();

class C {
  late FutureOr<Function> x1;
  late final FutureOr<Function> x2;
  covariant late FutureOr<Function> x3;

  late FutureOr<Foo> x4;
  late final FutureOr<Foo> x5;
  covariant late FutureOr<Foo> x6;

  C() {}
}

main() {
  new C();
}