56 lines
1.9 KiB
Java
56 lines
1.9 KiB
Java
/*
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* Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/* @test
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* @bug 8022853
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* @library /test/lib
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* @modules java.base/jdk.internal.misc
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* @run main GetUncompressedObject
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*/
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import static jdk.test.lib.Asserts.*;
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import jdk.internal.misc.Unsafe;
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public class GetUncompressedObject {
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public static void main(String args[]) throws Exception {
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Unsafe unsafe = Unsafe.getUnsafe();
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// Allocate some memory and fill it with non-zero values.
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final int size = 32;
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final long address = unsafe.allocateMemory(size);
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unsafe.setMemory(address, size, (byte) 0x23);
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// The only thing we can do is check for null-ness.
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// So, store a null somewhere.
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unsafe.putAddress(address + 16, 0);
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Object nullObj = unsafe.getUncompressedObject(address + 16);
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if (nullObj != null) {
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throw new InternalError("should be null");
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}
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}
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}
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