Thu, 06 Jun 2013 15:33:40 +0100
8008627: Compiler mishandles three-way return-type-substitutability
Summary: Compiler should not enforce an order in how ambiguous methods should be resolved
Reviewed-by: jjg, vromero
1 /*
2 * Copyright (c) 2005, 2007, 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 6227936
27 * @summary Wrong type of inherited method using specialized type parameter
28 * @compile/fail Orig.java
29 */
31 class GenericTest {
32 static class A<T extends B> {
33 T myB;
34 A(T myB) {this.myB = myB;}
35 T getB() {return myB;}
36 }
37 static class B<T extends C> {
38 T myC;
39 B(T myB) {this.myC = myC;}
40 T getC() {return myC;}
41 }
42 static class C {
43 C() {}
44 }
46 static class A1<T extends B1> extends A<T> {
47 A1(T myB) {super(myB);}
48 public void testMethod() {
49 // This next line fails, but should work
50 getB().getC().someMethod();
51 ((C1)getB().getC()).someMethod();
52 }
53 }
54 static class B1<T extends C1> extends B<T> {
55 B1(T myC) {super(myC);}
56 }
57 static class C1 extends C {
58 public void someMethod() {}
59 }
60 }