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
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17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18  *
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20  * or visit www.oracle.com if you need additional information or have any
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22  */
23 
24 /*
25  * @test
26  * @bug 8032711
27  * @summary Issue with Lambda in handling
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 public class T8032711 {
37 
38     interface I {
m()39         void m();
40     }
41 
here()42     static void here() {}
43     static MethodHandles.Lookup l;
44     static MethodHandle h;
mt(Class<?> k)45     private static MethodType mt(Class<?> k) { return MethodType.methodType(k); }
mf(Class<?> k)46     private static boolean mf(Class<?> k) {
47         try {
48             LambdaMetafactory.metafactory(l, "m",
49                 mt(I.class),mt(k),h,mt(void.class));
50         } catch(LambdaConversionException e) {
51             return true;
52         }
53         return false;
54     }
55 
main(String[] args)56     public static void main(String[] args) throws Throwable {
57         l = MethodHandles.lookup();
58         h = l.findStatic(T8032711.class, "here", mt(void.class));
59         if (mf(void.class)) throw new AssertionError("Error: Should work");
60         if (!mf(String.class)) throw new AssertionError("Error: Should fail");
61     }
62 }
63