--- /dev/null Wed Apr 22 10:51:38 2015 +++ new/test/runtime/Unsafe/GetUncompressedObject.java Wed Apr 22 10:51:38 2015 @@ -0,0 +1,56 @@ +/* + * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + */ + +/* @test + * @bug 8022853 + * @library /testlibrary + * @modules java.base/sun.misc + * @run main GetUncompressedObject + */ + +import static com.oracle.java.testlibrary.Asserts.*; + +import com.oracle.java.testlibrary.*; +import sun.misc.Unsafe; + +public class GetUncompressedObject { + + public static void main(String args[]) throws Exception { + Unsafe unsafe = Utils.getUnsafe(); + + // Allocate some memory and fill it with non-zero values. + final int size = 32; + final long address = unsafe.allocateMemory(size); + unsafe.setMemory(address, size, (byte) 0x23); + + // The only thing we can do is check for null-ness. + // So, store a null somewhere. + unsafe.putAddress(address + 16, 0); + + Object nullObj = unsafe.getUncompressedObject(address + 16); + if (nullObj != null) { + throw new InternalError("should be null"); + } + } + +}