1 /*
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 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
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 7  * published by the Free Software Foundation.  Oracle designates this
 8  * particular file as subject to the "Classpath" exception as provided
 9  * by Oracle in the LICENSE file that accompanied this code.
10  *
11  * This code is distributed in the hope that it will be useful, but WITHOUT
12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14  * version 2 for more details (a copy is included in the LICENSE file that
15  * accompanied this code).
16  *
17  * You should have received a copy of the GNU General Public License version
18  * 2 along with this work; if not, write to the Free Software Foundation,
19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20  *
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24  */
25 
26 /*
27  * @test
28  * @bug 8244712
29  * @summary Javac should switch to reference projection before walking type hierarchy.
30  * @enablePreview
31  * @compile AsSuperTests.java
32  */
33 
34 /* The following test "covers"/verifies that the asSuper calls in
35    com.sun.tools.javac.comp.Resolve#resolveSelf &&
36    com.sun.tools.javac.comp.Lower#visitSelect
37    com.sun.tools.javac.comp.Resolve#mostSpecific
38    com.sun.tools.javac.comp.Attr#visitSelect
39    com.sun.tools.javac.comp.Resolve.UnboundMethodReferenceLookupHelper#UnboundMethodReferenceLookupHelper
40    work correctly with value classes.
41 */
42 
43 interface I {
44     default void foo() {
45         System.out.println("I.foo");
46     }
47 }
48 
49 abstract value class Base<T> {
50     static void goo() {}
51     void zoo() {}
52     interface SAM {
53        String m(Foo f);
54     }
55 
56     static void test() {
57         SAM s = Base::getX;
58     }
59 
60     String getX() { return null; }
61 
62     static value class Foo<X> extends Base {}
63 }
64 
65 value class X extends Base implements I {
66 
67     static void goo() {}
68 
69     public void foo() {
70         I.super.foo();
71         X.this.goo(); // covers the asSuper call in com.sun.tools.javac.comp.Resolve#mostSpecific
72         super.zoo();  // covers the asSuper call in com.sun.tools.javac.comp.Attr#visitSelect
73     }
74 }