blob: 1a57405c2e32eefca61c426b9cb59b5fd4da1e26 [file] [log] [blame]
// 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.
import 'dart:async';
/* `return exp;` where `exp` has static type `S` is an error if the future
* value type of the function is neither `void` nor `dynamic`,
* and `flatten(S)` is `void` or `void*`.
*/
Future<void>? v = null;
Object test1() async {
return v;
// ^
// [analyzer] unspecified
// [cfe] A value of type 'Future<void>?' can't be returned from an async function with return type 'Object'.
}
Object? test2() async {
return v;
// ^
// [analyzer] unspecified
// [cfe] A value of type 'Future<void>?' can't be returned from an async function with return type 'Object?'.
}
// Inferred return type of function literal is `Future<void?>`, no error.
Object Function() test3 = () async {
return v;
};
// Inferred return type of function literal is `Future<void?>`, no error.
Object? Function() test4 = () async {
return v;
};
void main() {
test1();
test2();
test3();
test4();
}