Konstantin Shcheglov
bd0e77c4fc
Bug: https://github.com/dart-lang/sdk/issues/52409 Change-Id: I675ed8f8cfa0d2e5327c2c6bc0fb1bda7bde038c Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/303840 Reviewed-by: Paul Berry <paulberry@google.com> Commit-Queue: Konstantin Shcheglov <scheglov@google.com>
29 lines
717 B
Dart
29 lines
717 B
Dart
// Copyright (c) 2023, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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/// Regression test for https://github.com/dart-lang/sdk/issues/52409.
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import 'package:expect/expect.dart';
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import "../static_type_helper.dart";
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class A {
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Never get getterThatReturnsNever => throw 0;
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}
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void f(Object? x) {
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int? y = 0; // implicitly promotes to `int`
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switch (x) {
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case A(getterThatReturnsNever: _):
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y = null;
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default:
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}
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// `y = null` was unreachable, so `y` should still be promoted to `int`
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y.expectStaticType<Exactly<int>>();
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}
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void main() {
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f(0);
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}
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