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annotate test/compiler/6859338/Test6859338.java @ 3237:399aa66d375e

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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 c18cbe5936b8
children da91efe96a93
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1 /*
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2 * Copyright (c) 2009, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
fe95187e8882 6859338: amd64 native unverified entry point pushes values before implicit null check
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 *
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23 */
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24
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25 /**
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26 * @test
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27 * @bug 6859338
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28 * @summary Assertion failure in sharedRuntime.cpp
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29 *
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30 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-InlineObjectHash -Xbatch -XX:-ProfileInterpreter Test6859338
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31 */
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32
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33 public class Test6859338 {
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34 static Object[] o = new Object[] { new Object(), null };
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35 public static void main(String[] args) {
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36 int total = 0;
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37 try {
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38 // Exercise the implicit null check in the unverified entry point
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39 for (int i = 0; i < 40000; i++) {
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40 int limit = o.length;
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41 if (i < 20000) limit = 1;
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42 for (int j = 0; j < limit; j++) {
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43 total += o[j].hashCode();
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44 }
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45 }
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46
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47 } catch (NullPointerException e) {
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48 // this is expected. A true failure causes a crash
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49 }
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50 }
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51 }