/*
* Copyright (c) 2010, 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).
*
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* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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*/
/**
* @test
* @bug 6968348
* @summary Byteswapped memory access can point to wrong location after JIT
*
* @run main Test6968348
*/
import sun.misc.Unsafe;
import java.lang.reflect.*;
public class Test6968348 {
static Unsafe unsafe;
static final long[] buffer = new long[4096];
static int array_long_base_offset;
public static void main(String[] args) throws Exception {
Class c = Test6968348.class.getClassLoader().loadClass("sun.misc.Unsafe");
Field f = c.getDeclaredField("theUnsafe");
f.setAccessible(true);
unsafe = (Unsafe)f.get(c);
array_long_base_offset = unsafe.arrayBaseOffset(long[].class);
for (int n = 0; n < 100000; n++) {
test();
}
}
public static void test() {
for (long i = array_long_base_offset; i < 4096; i += 8) {
unsafe.putLong(buffer, i, Long.reverseBytes(i));
}
}
}