| /* |
| * Copyright (c) 2019, 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 It is not an error to call or tear-off a method, setter, or |
| * getter, or to read or write a field, on a receiver of static type Never. |
| * Implementations that provide feedback about dead or unreachable code are |
| * encouraged to indicate that any arguments to the invocation are unreachable. |
| * |
| * @description Check that it is a warning to call a method, setter, or |
| * getter on a receiver of static type Never via a null aware operator. Test |
| * type aliases |
| * @author sgrekhov@unipro.ru |
| * @issue 39866 |
| * @static-warning |
| */ |
| // SharedOptions=--enable-experiment=nonfunction-type-aliases |
| // Requirements=nnbd-strong |
| typedef Neverland = Never; |
| |
| void test(var x) { |
| if (x is Neverland) { |
| x?.toString(); /// static type warning |
| x?.runtimeType; /// static type warning |
| x?.s = 1; /// static type warning |
| x?..toString(); /// static type warning |
| x?..runtimeType; /// static type warning |
| x?..s = 1; /// static type warning |
| } |
| } |
| |
| main() { |
| test(null); |
| } |
