1 /*

     2  * Copyright (c) 2014, 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 8032697

    27  * @summary Issues with Lambda

    28  */

    29 

    30 import java.lang.invoke.LambdaMetafactory;

    31 import java.lang.invoke.LambdaConversionException;

    32 import java.lang.invoke.MethodHandle;

    33 import java.lang.invoke.MethodHandles;

    34 import java.lang.invoke.MethodType;

    35 

    36 import T8032697_anotherpkg.T8032697_A;

    37 

    38 public class T8032697 extends T8032697_A {

    39 

    40     interface I {

    41         int m();

    42     }

    43 

    44     interface IA {

    45         int m(T8032697_A x);

    46     }

    47 

    48     static MethodHandles.Lookup l;

    49     static MethodHandle h;

    50     private static MethodType mt(Class<?> k) { return MethodType.methodType(k); }

    51     private static MethodType mt(Class<?> k, Class<?> k2) { return MethodType.methodType(k, k2); }

    52     private static boolean mf(MethodType mti, MethodType mtf) {

    53         try {

    54             LambdaMetafactory.metafactory(l, "m", mti,mtf,h,mtf);

    55         } catch(LambdaConversionException e) {

    56             return true;

    57         }

    58         return false;

    59     }

    60 

    61     public static void main(String[] args) throws Throwable {

    62         l = MethodHandles.lookup();

    63         h = l.findVirtual(T8032697_A.class, "f", mt(int.class));

    64         if (mf(mt(I.class, T8032697.class), mt(int.class))) throw new AssertionError("Error: Should work");

    65         if (mf(mt(IA.class), mt(int.class, T8032697.class))) throw new AssertionError("Error: Should work");

    66         if (!mf(mt(I.class, T8032697_A.class), mt(int.class))) throw new AssertionError("Error: Should fail");

    67         if (!mf(mt(IA.class), mt(int.class, T8032697_A.class))) throw new AssertionError("Error: Should fail");

    68     }

    69 }