| // Copyright (c) 2020, 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. |
| |
| class A<X> {} |
| |
| class B<Y1, Y2 extends List<Y3>, Y3> extends A<Y1> { |
| Y1 get y1 => throw "B.y1"; |
| Y2 get y2 => throw "B.y2"; |
| Y3 get y3 => throw "B.y3"; |
| } |
| |
| foo<Z>(A<List<Z>> Function() f) {} |
| |
| bar() { |
| foo(() => B()..y1[0]?.unknown()); |
| foo(() => B()..y2[0]?.unknown()); |
| foo(() => B()..y3?.unknown()); |
| } |
| |
| main() {} |
