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 { 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