1 /* 2 * Copyright (c) 2021, 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. 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 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 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 }