dart-sdk/tests/language/invalid_returns/async_invalid_return_17_test.dart
Erik Ernst c326744224 Adjust language tests cf. #1092 ("void from context")
Change-Id: I62d8ff458bef5903b69827de140490790c4f529c
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/154661
Reviewed-by: Johnni Winther <johnniwinther@google.com>
Reviewed-by: Konstantin Shcheglov <scheglov@google.com>
Commit-Queue: Erik Ernst <eernst@google.com>
2020-07-16 14:30:53 +00:00

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984 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 `void` and `flatten(S)` is not
* `void`, `dynamic`, `Null`, `void*`, `dynamic*`, or `Null*`.
*/
Future<Object> v = Future.value(Object());
void test1() async {
return v;
// ^
// [analyzer] unspecified
// [cfe] A value of type 'Future<Object>' can't be returned from an async function with return type 'void'.
}
// Inferred return type of function literal is `Future<void>`.
void Function() test2 = () async {
return v;
// ^
// [analyzer] unspecified
// [cfe] A value of type 'Future<Object>' can't be returned from an async function with return type 'Future<void>'.
};
void main() {
test1();
test2();
}