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 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