1 /* 2 * Copyright (c) 2012, 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 6894807 27 * @summary No ClassCastException for HashAttributeSet constructors if run with -Xcomp 28 * @run main IsInstanceTest 29 */ 30 31 public class IsInstanceTest { 32 33 public static void main(String[] args) { 34 BaseInterface baseInterfaceImpl = new BaseInterfaceImpl(); 35 for (int i = 0; i < 100000; i++) { 36 if (isInstanceOf(baseInterfaceImpl, ExtendedInterface.class)) { 37 throw new AssertionError("Failed at index:" + i); 38 } 39 } 40 System.out.println("Done!"); 41 } 42 43 public static boolean isInstanceOf(BaseInterface baseInterfaceImpl, Class... baseInterfaceClasses) { 44 for (Class baseInterfaceClass : baseInterfaceClasses) { 45 if (baseInterfaceClass.isInstance(baseInterfaceImpl)) { 46 return true; 47 } 48 } 49 return false; 50 } 51 52 private interface BaseInterface { 53 } 54 55 private interface ExtendedInterface extends BaseInterface { 56 } 57 58 private static class BaseInterfaceImpl implements BaseInterface { 59 } 60 }