// Copyright (c) 2016, 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 Let T be the static type of e and let f be the immediately
/// enclosing function.
///    It is a static type warning if the body of f is marked async and the type
/// Future<flatten(T)> may not be assigned to the declared return type of f.
/// Otherwise, it is a static type warning if T may not be assigned to the
/// declared return type of f.
///
/// @description Checks that compile error occurs if the type
/// Future<flatten(T)> may not be assigned to the declared return type of the
/// immediately enclosing function, marked async.
///
/// @author a.semenov@unipro.ru

import 'dart:async';
import '../../../Utils/expect.dart';

Future<int> foo() async {
  return 'a';
//       ^
// [analyzer] unspecified
// [cfe] unspecified
}

main() {}