Dmitry Stefantsov
7252a146a2
Closes #43278. Bug: https://github.com/dart-lang/sdk/issues/43278 Change-Id: I4b8a938441c75462a98a1d72d5fb23d50b5f92b0 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/162160 Commit-Queue: Dmitry Stefantsov <dmitryas@google.com> Reviewed-by: Johnni Winther <johnniwinther@google.com>
34 lines
739 B
Dart
34 lines
739 B
Dart
// Copyright (c) 2020, 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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class A {
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int? foo;
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A bar;
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A(this.bar);
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}
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test<T extends A?>(A? a, T t, dynamic d, int x) {
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a.foo ??= x; // Error.
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t.foo ??= x; // Error.
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d.foo ??= x; // Ok.
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a?.bar.foo ??= x; // Ok.
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}
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class B {}
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extension Extension on B {
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int? get fooExtension => null;
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void set fooExtension(int? value) {}
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B get barExtension => new B();
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}
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testExtension<T extends B?>(B? b, T t, int x) {
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b.fooExtension ??= x; // Error.
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t.fooExtension ??= x; // Error.
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b?.barExtension.fooExtension ??= x; // Ok.
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}
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main() {}
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