1 /*

     2  * Copyright (c) 2017, 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 8191655

    27  * @summary LambdaConversionException: Invalid receiver type interface; not a subtype of implementation type interface

    28  * @run main MethodReferenceUnionTypeTest

    29  */

    30 

    31 import java.util.function.Consumer;

    32 public class MethodReferenceUnionTypeTest {

    33    static String blah = "NONE";

    34    <T> void forAll(Consumer<T> consumer, T value) { consumer.accept(value); }

    35 

    36    public void secondTest() {

    37        try {

    38           throwing();

    39         } catch (A | B ex) {

    40             forAll(Picture::draw, ex);

    41         }

    42    }

    43 

    44    void throwing() throws A, B { throw new A();}

    45 

    46    interface Shape { void draw(); }

    47    interface Marker { }

    48    interface Picture { void draw();  }

    49 

    50    class A extends Exception implements Marker, Picture { public void draw() { blah = "A"; }}

    51    class B extends Exception implements Marker, Picture, Shape { public void draw() {}}

    52 

    53    public static void main(String[] args) {

    54        new MethodReferenceUnionTypeTest().secondTest();

    55        if (!blah.equals("A"))

    56             throw new AssertionError("Incorrect output");

    57    }

    58 }