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annotate test/compiler/6859338/Test6859338.java @ 848:fe95187e8882

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6859338: amd64 native unverified entry point pushes values before implicit null check Reviewed-by: kvn, twisti
author never
date Mon, 13 Jul 2009 14:58:17 -0700
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children c18cbe5936b8
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848
fe95187e8882 6859338: amd64 native unverified entry point pushes values before implicit null check
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1 /*
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2 * Copyright 2009 Sun Microsystems, Inc. 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
fe95187e8882 6859338: amd64 native unverified entry point pushes values before implicit null check
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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
fe95187e8882 6859338: amd64 native unverified entry point pushes values before implicit null check
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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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any 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 }