Mercurial > hg > graal-compiler
annotate test/compiler/7041100/Test7041100.java @ 6112:55954061c6e8 jdk8-b42
Added tag hs24-b13 for changeset bd568544be7f
author | amurillo |
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date | Fri, 01 Jun 2012 15:24:09 -0700 |
parents | e6d7eed3330c |
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7041100: The load in String.equals intrinsic executed before null check
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1 /* |
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2 * Copyright (c) 2011, 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 |
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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 7041100 |
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28 * @summary The load in String.equals intrinsic executed before null check |
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29 * |
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30 * @run main/othervm -Xbatch Test7041100 abc def |
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31 */ |
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32 |
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33 public class Test7041100 { |
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34 |
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35 static String n = null; |
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36 public static void main(String[] args) throws Exception { |
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37 for (int i = 0; i < 10000; i++) { |
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38 stringEQ(args[0], args[1]); |
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39 stringEQ(args[0], args[0]); |
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40 stringEQ(args[0], n); |
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41 stringEQ(n, args[0]); |
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42 } |
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43 } |
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44 |
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45 public static boolean stringEQ(String a, String b) { |
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46 if (a == b) |
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47 return true; |
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48 if (a == null || b == null) |
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49 return false; |
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50 else |
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51 return a.equals(b); |
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52 } |
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53 } |