pkg/front_end/testcases/nnbd/issue41108.dart

// Copyright (c) 2020, 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.

test() async {
  List y = await l(); // should be a List?
}

Future<List>? l() => null;

main() {}