author | iveresov |
Tue, 24 Feb 2015 23:31:00 -0800 | |
changeset 29343 | cf560f960e85 |
parent 29087 | 79c30f6c2125 |
child 40059 | c2304140ed64 |
permissions | -rw-r--r-- |
29087 | 1 |
/* |
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* Copyright (c) 2015, Oracle and/or its affiliates. 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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*/ |
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||
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/** |
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* @test |
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* @bug 8072753 |
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* @summary Inner loop induction variable increment occurs before compare which causes integer overflow |
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* @run main/othervm CountedLoopProblem |
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* |
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*/ |
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import java.util.*; |
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public class CountedLoopProblem { |
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public static void main(String[] args) throws Exception { |
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Random r = new Random(42); |
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int x = 0; |
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cf560f960e85
8073735: compiler/loopopts/CountedLoopProblem.java got OOME
iveresov
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try { |
cf560f960e85
8073735: compiler/loopopts/CountedLoopProblem.java got OOME
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StringBuilder sb = new StringBuilder(); |
cf560f960e85
8073735: compiler/loopopts/CountedLoopProblem.java got OOME
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for(int i = 0; i < 1000000; ++i) { |
cf560f960e85
8073735: compiler/loopopts/CountedLoopProblem.java got OOME
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int v = Math.abs(r.nextInt()); |
cf560f960e85
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sb.append('+').append(v).append('\n'); |
cf560f960e85
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x += v; |
cf560f960e85
8073735: compiler/loopopts/CountedLoopProblem.java got OOME
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// To trigger the problem we must OSR in the following loop |
cf560f960e85
8073735: compiler/loopopts/CountedLoopProblem.java got OOME
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// To make the problem 100% reproducible run with -XX:-TieredCompilation -XX:OSROnlyBCI=62 |
cf560f960e85
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while(x < 0) x += 1000000000; |
cf560f960e85
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sb.append('=').append(x).append('\n'); |
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8073735: compiler/loopopts/CountedLoopProblem.java got OOME
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} |
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if (sb.toString().hashCode() != 0xaba94591) { |
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throw new Exception("Unexpected result"); |
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} |
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} catch(OutOfMemoryError e) { |
cf560f960e85
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// small heap, ignore |
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} |
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} |
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} |
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