1/*
2 * Copyright (c) 2003, 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 */
23
24/*
25 * @test
26 * @summary Test subtyping for wildcards with the same type bound.
27 *
28 * @compile/fail/ref=AssignmentSameType.out -XDrawDiagnostics AssignmentSameType.java
29 */
30
31public class AssignmentSameType {
32
33    public static void main(String[] args) {
34        Ref<B> exact = null;
35        Ref<? extends B> ebound = null;
36        Ref<? super B> sbound = null;
37        Ref<?> unbound = null;
38
39;       exact = exact;          // <<pass>> <A> = <A>
40
41        ebound = exact;         // <<pass>> <? extends A> = <A>
42        ebound = ebound;        // <<pass>> <? extends A> = <? extends A>
43
44        sbound = exact;         // <<pass>> <? super A> = <A>
45        sbound = sbound;        // <<pass>> <? super A> = <? super A>
46
47        unbound = exact;        // <<pass>> <?> = <A>
48        unbound = ebound;       // <<pass>> <?> = <? extends A>
49        unbound = sbound;       // <<pass>> <?> = <? super A>
50        unbound = unbound;      // <<pass>> <?> = <?>
51
52        exact = ebound;         // <<fail>> <A> = <? extends A>
53        exact = sbound;         // <<fail>> <A> = <? super A>
54        exact = unbound;        // <<fail>> <A> = <?>
55        ebound = sbound;        // <<fail>> <? extends A> = <? super A>
56        ebound = unbound;       // <<fail>> <? extends A> = <?>
57        sbound = ebound;        // <<fail>> <? super A> = <? extends A>
58        sbound = unbound;       // <<fail>> <? super A> = <?>
59    }
60}
61
62class Ref<A> {}
63class B {}
64