author | gtriantafill |
Wed, 14 Sep 2016 08:17:50 -0400 | |
changeset 41092 | c388d897472d |
parent 40059 | c2304140ed64 |
child 41705 | 332239c052cc |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2010, 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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*/ |
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/** |
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* @test |
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* @bug 6968348 |
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* @summary Byteswapped memory access can point to wrong location after JIT |
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* @modules java.base/jdk.internal.misc |
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* |
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* @run main compiler.c2.Test6968348 |
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*/ |
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package compiler.c2; |
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import jdk.internal.misc.Unsafe; |
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import java.lang.reflect.Field; |
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public class Test6968348 { |
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static Unsafe unsafe = Unsafe.getUnsafe(); |
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static final long[] buffer = new long[4096]; |
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static int array_long_base_offset; |
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public static void main(String[] args) throws Exception { |
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array_long_base_offset = unsafe.arrayBaseOffset(long[].class); |
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for (int n = 0; n < 100000; n++) { |
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test(); |
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} |
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} |
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public static void test() { |
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for (long i = array_long_base_offset; i < 4096; i += 8) { |
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unsafe.putLong(buffer, i, Long.reverseBytes(i)); |
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} |
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} |
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} |