| // Copyright (c) 2023, 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. |
| |
| /// Regression test for https://github.com/dart-lang/sdk/issues/52409. |
| |
| import 'package:expect/expect.dart'; |
| |
| import "../static_type_helper.dart"; |
| |
| class A { |
| Never get getterThatReturnsNever => throw 0; |
| } |
| |
| void f(Object? x) { |
| int? y = 0; // implicitly promotes to `int` |
| switch (x) { |
| case A(getterThatReturnsNever: _): |
| y = null; |
| default: |
| } |
| // `y = null` was unreachable, so `y` should still be promoted to `int` |
| y.expectStaticType<Exactly<int>>(); |
| } |
| |
| void main() { |
| f(0); |
| } |