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2f93a29176
Change-Id: I0c2f07e93f0910ee6bca1abaedb8be61b1304f38 Reviewed-on: https://dart-review.googlesource.com/22882 Reviewed-by: Konstantin Shcheglov <scheglov@google.com> Commit-Queue: Paul Berry <paulberry@google.com>
24 lines
457 B
Dart
24 lines
457 B
Dart
// Copyright (c) 2017, 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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import "package:expect/expect.dart";
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class A {}
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class B extends A {}
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class C {
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void f(B b) {}
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}
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main() {
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C c = new C();
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A a1 = new B();
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A a2 = new A();
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c?.f(a1); // No error
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Expect.throwsTypeError(() {
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c?.f(a2);
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});
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}
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