dart-sdk/tests/language/invalid_returns/async_invalid_return_35_test.dart
Johnni Winther fd432febe0 [cfe] Update messages for invalid returns
Closes #42527

Change-Id: Ic240dd7a8822c85c550941923bf9ce3b5cfe0dba
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/153348
Commit-Queue: Johnni Winther <johnniwinther@google.com>
Reviewed-by: Erik Ernst <eernst@google.com>
2020-07-08 14:47:14 +00:00

30 lines
816 B
Dart

// 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*`.
*/
void v = null;
FutureOr<Object?> test1() async {
return v;
// ^
// [analyzer] unspecified
// [cfe] A value of type 'void' can't be returned from an async function with return type 'FutureOr<Object?>'.
}
// Inferred return type of function literal is `Future<void>`, no error.
FutureOr<Object?> Function() test2 = () async {
return v;
};
void main() {
test1();
test2();
}