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 8234729

    27  * @summary Javac should eagerly change code generation for method references to avert IllegalAccessError in future.

    28  * @run main ProtectedInaccessibleMethodRefTest2

    29  */

    30 

    31 import pack.I;

    32 import pack.J;

    33 

    34 import java.nio.file.Path;

    35 import java.nio.file.Paths;

    36 import java.util.function.Function;

    37 import java.lang.reflect.Method;

    38 import java.util.concurrent.Callable;

    39 

    40 public final class ProtectedInaccessibleMethodRefTest2 extends I {

    41 

    42     public static void main(String... args) {

    43         ProtectedInaccessibleMethodRefTest2 m = new ProtectedInaccessibleMethodRefTest2();

    44         m.test(Paths.get("test"));

    45         // Verify that the method reference has been folded into a lambda.

    46         boolean lambdaFound = false;

    47         for (Method meth : ProtectedInaccessibleMethodRefTest2.class.getDeclaredMethods()) {

    48             if (meth.getName().equals("lambda$test$0")) {

    49                 lambdaFound = true;

    50                 break;

    51             }

    52         }

    53         if (!lambdaFound) {

    54             throw new AssertionError("Did not find evidence of new code generation");

    55         }

    56     }

    57 

    58     void test(Path outputDir) {

    59         Sub c = new Sub(this::readFile);

    60         c.check(outputDir);

    61     }

    62     public class Sub extends J {

    63         Sub(Function<Path,String> fileReader) {

    64             super(fileReader);

    65         }

    66     }

    67 }