view test/compiler/7002666/Test7002666.java @ 3237:399aa66d375e

Fixed a bug in which the valueEquals method was misused. The method does only check the equality of the node data and not full GVN equality by taking inputs and successors into account.
author Thomas Wuerthinger <thomas@wuerthinger.net>
date Wed, 27 Jul 2011 14:16:38 -0700
parents 4da76e32c0be
children
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/*
 * 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).
 *
 * 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 7002666
 * @summary eclipse CDT projects crash with compressed oops
 *
 * @run main/othervm -Xbatch -XX:CompileOnly=Test7002666.test,java/lang/reflect/Array Test7002666
 *
 * This will only reliably fail with a fastdebug build since it relies
 * on seeing garbage in the heap to die.  It could be made more
 * reliable in product mode but that would require greatly increasing
 * the runtime.
 */

public class Test7002666 {
    public static void main(String[] args) {
        for (int i = 0; i < 25000; i++) {
            Object[] a = test(Test7002666.class, new Test7002666());
            if (a[0] != null) {
                // The element should be null but if it's not then
                // we've hit the bug.  This will most likely crash but
                // at least throw an exception.
                System.err.println(a[0]);
                throw new InternalError(a[0].toString());

            }
        }
    }
    public static Object[] test(Class c, Object o) {
        // allocate an array small enough to be trigger the bug
        Object[] a = (Object[])java.lang.reflect.Array.newInstance(c, 1);
        return a;
    }
}