| /* |
| * Copyright (c) 2011, 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 We define inherited(J, K) to be |
| * the set of members m such that all of the following hold: |
| * • m is accessible to K and |
| * • A is a direct superinterface of J and either |
| * – A declares a member m or |
| * – m is a member of inherited(A, K). |
| * • m is not overridden by J. |
| * ... |
| * If some but not all of the mi, 1 ≤ i ≤ k are getters none of the mi are |
| * inherited, and a static warning is issued. |
| * Otherwise, if the static types T1,...,Tk of the members m1,...,mk are not |
| * identical, then there must be a member mx such that Tx <: Ti, 1 ≤ x ≤ k for |
| * all i ∈ 1..k, or a static type warning occurs. |
| * @description Checks that if all inherited members with the same name are |
| * getters and their static types are not identical, but there is no getter |
| * such that its type is subtype of types of all other getters, then, anyway, a |
| * compile error occurs |
| * @compile-error |
| * @author sgrekhov@unipro.ru |
| */ |
| |
| abstract class SI1 { |
| int get m; |
| } |
| |
| abstract class SI2 { |
| bool get m; |
| } |
| |
| abstract class SI3 { |
| String get m; |
| } |
| |
| abstract class I implements SI1, SI2, SI3 { |
| } |
| |
| main() { |
| I? i = null; |
| } |