1 /*
   2  * Copyright (c) 2019, 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  * @bug 8227415
  27  * @run main p.SuperMethodTest
  28  * @summary method reference to a protected method inherited from its
  29  *          superclass in a different package must be accessed via
  30  *          a bridge method.  Lambda proxy class has no access to it.
  31  */
  32 
  33 package p;
  34 
  35 import q.I;
  36 import q.J;
  37 
  38 import java.nio.file.Path;
  39 import java.nio.file.Paths;
  40 import java.util.function.Function;
  41 
  42 public class SuperMethodTest  {
  43     public static void main(String... args) {
  44         Sub_I sub = new Sub_I();
  45         sub.test(Paths.get("test"));
  46     }
  47 
  48     public static class Sub_J extends J {
  49         Sub_J(Function<Path,String> function) {
  50             super(function);
  51         }
  52     }
  53 
  54     public static class Sub_I extends I {
  55         public void test(Path path) {
  56             /*
  57              * The method reference to an inherited protected method
  58              * in another package is desugared with REF_invokeVirtual on
  59              * a bridge method to invoke protected q.I::filename method
  60              */
  61             Sub_J c = new Sub_J(this::filename);
  62             c.check(path);
  63         }
  64     }
  65 }
  66