Fri, 24 Apr 2020 03:58:51 +0100
Merge
1 /*
2 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
24 /**
25 * @test
26 * @bug 8041663
27 */
29 public class AmbiguityErrorTest {
31 public interface A { }
33 public interface B extends A { }
35 public interface C {
36 A m(B strategy);
37 }
39 public interface D {
40 A m(A strategy);
41 A m(B strategy);
42 }
44 public interface T1 extends C, D { }
45 public interface T2 extends D, C { }
47 int count;
49 class T1Impl implements T1, T2 {
50 public A m(B strategy) {
51 count++;
52 return null;
53 }
54 public A m(A strategy) {
55 throw new AssertionError("Should not get here.");
56 }
57 }
59 public static void main(String... args) {
60 new AmbiguityErrorTest().test();
61 }
63 void test() {
64 T1 t1 = new T1Impl();
65 T2 t2 = new T1Impl();
66 final B b = new B() { };
67 t1.m(b);
68 t2.m(b);
70 if (count != 2) {
71 throw new IllegalStateException("Did not call the methods properly");
72 }
73 }
75 }