| // Copyright (c) 2019, 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. |
| |
| /** |
| * @assertion It is a compile-time error if a parameterized type [T] is |
| * super-bounded when it is used in any of the following ways: |
| * [T] is an immediate subterm of a new expression (16.15.1) or a constant |
| * object expression |
| * @description Checks that compile error is not thrown when well-bounded |
| * parametrized type is used in the constant object expression with [is] |
| * constructions. |
| * @Issue 42415, 42429 |
| * @author iarkh@unipro.ru |
| */ |
| |
| class A<T extends A<T>> {} |
| |
| main() { |
| bool b1 = 1 is A; |
| |
| bool b2 = 1 is A<dynamic>; |
| bool b3 = 1 is A<Object?>; |
| bool b4 = 1 is A<Object>; //# 01: compile-time error |
| bool b5 = 1 is A<Never>; |
| bool b6 = 1 is A<void>; |
| |
| bool b7 = 1 is A<A>; |
| bool b8 = 1 is A<A<dynamic>>; |
| bool b9 = 1 is A<A<Object?>>; |
| bool b10 = 1 is A<A<Object>>; //# 02: compile-time error |
| bool b12 = 1 is A<A<Never>>; |
| bool b13 = 1 is A<A<void>>; |
| } |
