mirror of
https://github.com/dart-lang/sdk
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ba92b78acd
Bug: https://github.com/dart-lang/sdk/issues/42821 Change-Id: I153c48d7a2e4a02026928e6203aacf8f2dc029ba Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/155849 Reviewed-by: Brian Wilkerson <brianwilkerson@google.com>
21 lines
502 B
Dart
21 lines
502 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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class A {}
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class B extends A {}
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class C {
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C operator +(B b) => this;
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}
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void main() {
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C c = new C();
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A a = new B();
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c += a;
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// ^
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// [analyzer] COMPILE_TIME_ERROR.ARGUMENT_TYPE_NOT_ASSIGNABLE
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// [cfe] A value of type 'A' can't be assigned to a variable of type 'B'.
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}
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