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
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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.
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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 {
m()41         int m();
42     }
43 
44     interface IA {
m(T8032697_A x)45         int m(T8032697_A x);
46     }
47 
48     static MethodHandles.Lookup l;
49     static MethodHandle h;
mt(Class<?> k)50     private static MethodType mt(Class<?> k) { return MethodType.methodType(k); }
mt(Class<?> k, Class<?> k2)51     private static MethodType mt(Class<?> k, Class<?> k2) { return MethodType.methodType(k, k2); }
mf(MethodType mti, MethodType mtf)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 
main(String[] args)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 }
70