dart-sdk/tests/language/void/return_future_or_future_or_void_sync_error1_test.dart
Robert Nystrom 3bc7d9562f Migrate "u" and "v" directory language tests off @compile-error.
The "@compile-error" comment is an old not-great way of defining static
error tests.

See: https://github.com/dart-lang/sdk/issues/45634
Change-Id: I3a41bb83767052abda1fdfc77e21bd1a83188482
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/296441
Auto-Submit: Bob Nystrom <rnystrom@google.com>
Reviewed-by: Jake Macdonald <jakemac@google.com>
Commit-Queue: Bob Nystrom <rnystrom@google.com>
2023-04-20 22:33:22 +00:00

20 lines
596 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';
void voidValue = null;
void main() {
test();
}
// Testing that a block bodied function may not return void
FutureOr<FutureOr<void>> test() {
return voidValue;
// ^^^^^^^^^
// [analyzer] COMPILE_TIME_ERROR.RETURN_OF_INVALID_TYPE
// [cfe] A value of type 'void' can't be returned from a function with return type 'FutureOr<FutureOr<void>>'.
}