1 /* 2 * Copyright (c) 2010, 2018, 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 /* 26 * @test 27 * @modules java.base/jdk.internal.misc 28 * 29 * @summary converted from VM Testbase vm/mlvm/anonloader/func/castToGrandparent. 30 * VM Testbase keywords: [feature_mlvm] 31 * VM Testbase readme: 32 * DESCRIPTION 33 * Cast an object loaded with Unsafe.defineAnonymousClass to superclass of its parent class. This cast should succeed. 34 * 35 * @library /vmTestbase 36 * /test/lib 37 * @run driver jdk.test.lib.FileInstaller . . 38 * 39 * @comment build test class and indify classes 40 * @build vm.mlvm.anonloader.func.castToGrandparent.Test 41 * @run driver vm.mlvm.share.IndifiedClassesBuilder 42 * 43 * @run main/othervm vm.mlvm.anonloader.func.castToGrandparent.Test 44 */ 45 46 package vm.mlvm.anonloader.func.castToGrandparent; 47 48 import vm.mlvm.anonloader.share.AnonkTestee01; 49 import vm.mlvm.anonloader.share.AnonkTestee02; 50 import vm.mlvm.share.Env; 51 import vm.mlvm.share.MlvmTest; 52 import vm.share.FileUtils; 53 import vm.share.UnsafeAccess; 54 55 public class Test extends MlvmTest { 56 private static final Class<?> PARENT = AnonkTestee02.class; 57 58 @Override 59 public boolean run() throws Exception { 60 byte[] classBytes = FileUtils.readClass(PARENT.getName()); 61 Class<?> cls = UnsafeAccess.unsafe.defineAnonymousClass( 62 PARENT, classBytes, null); 63 Object anonObject = cls.newInstance(); 64 // Try to cast anonymous class to its grandparent 65 AnonkTestee01 anonCastToParent = (AnonkTestee01) anonObject; 66 if ( anonCastToParent.equals(anonObject) ) 67 Env.traceNormal("Anonymous object can be cast to original one"); 68 69 // Try to cast using another method 70 new AnonkTestee01().getClass().cast(anonObject); 71 72 Env.traceNormal("Anonymous class can be cast to original one"); 73 74 return true; 75 } 76 77 public static void main(String[] args) { MlvmTest.launch(args); } 78 }