77 lines
2.2 KiB
Java
77 lines
2.2 KiB
Java
/*
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* Copyright (c) 2024, Arm Limited. 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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import java.lang.reflect.Field;
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import jdk.internal.misc.Unsafe;
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/*
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* @test
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* @bug 8341471
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* @summary Reversed field layout caused by unstable sorting
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* @modules java.base/jdk.internal.misc
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* @run main/othervm TestFieldLayout
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*/
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public class TestFieldLayout {
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private static final Unsafe U = Unsafe.getUnsafe();
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public static void main(String[] args) throws Exception {
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boolean endResult = true;
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long previous = 0;
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for (Field f : Test.class.getDeclaredFields()) {
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long current = U.objectFieldOffset(f);
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if (current < previous) {
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System.out.printf("FAILED: field %s offset %d previous %d\n",
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f.getName(), current, previous);
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endResult = false;
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}
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previous = current;
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}
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System.out.println(endResult ? "Test PASSES" : "Test FAILS");
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if (!endResult) {
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throw new Error("Test failed");
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}
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}
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public class Test {
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char a000;
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char a001;
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char a002;
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char a003;
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char a004;
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char a005;
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char a006;
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char a007;
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char a008;
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char a009;
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char a00a;
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char a00b;
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}
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}
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