| // 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 T may not be assigned |
| * to the declared return type of f. If f is synchronous it is a static type |
| * warning if T may not be assigned to Iterable. If f is asynchronous it is |
| * a static type warning if T may not be assigned to Stream. |
| * |
| * @description Check that compile-error is issued, if the body of f is marked |
| * sync* and the type T may not be assigned to the declared return |
| * type of f. |
| * |
| * @compile-error |
| * @author a.semenov@unipro.ru |
| */ |
| |
| Iterable<String> generator() sync* { |
| yield* 1; |
| } |
| |
| main() { |
| generator().first; |
| } |