| /* |
| * 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 8142386 |
| * @modules java.base/jdk.internal.misc |
| * @library /testlibrary /test/lib |
| * @summary Unsafe access to an array is wrongly marked as mismatched |
| * @run main/othervm -XX:-UseOnStackReplacement -XX:-BackgroundCompilation -XX:-TieredCompilation TestUnsafeMismatchedArrayFieldAccess |
| * |
| */ |
| |
| import java.lang.reflect.*; |
| import jdk.test.lib.Utils; |
| import jdk.internal.misc.Unsafe; |
| |
| public class TestUnsafeMismatchedArrayFieldAccess { |
| |
| private static final Unsafe UNSAFE = Utils.getUnsafe(); |
| |
| static { |
| try { |
| array_offset = UNSAFE.objectFieldOffset(TestUnsafeMismatchedArrayFieldAccess.class.getDeclaredField("array")); |
| } |
| catch (Exception e) { |
| throw new AssertionError(e); |
| } |
| } |
| |
| int[] array; |
| static final long array_offset; |
| |
| void m() { |
| UNSAFE.getObject(this, array_offset); |
| } |
| |
| static public void main(String[] args) { |
| TestUnsafeMismatchedArrayFieldAccess test = new TestUnsafeMismatchedArrayFieldAccess(); |
| |
| for (int i = 0; i < 20000; i++) { |
| test.m(); |
| } |
| } |
| } |