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Posted to commits@harmony.apache.org by "Vladimir Ivanov (JIRA)" <ji...@apache.org> on 2006/07/06 15:42:30 UTC
[jira] Updated: (HARMONY-790) [classlib][math] unexpected
ArrayIndexOutOfBoundsException for BigInteger.isProbablePrime(110)
[ http://issues.apache.org/jira/browse/HARMONY-790?page=all ]
Vladimir Ivanov updated HARMONY-790:
------------------------------------
Attachment: BigIntegerTest.patch
unit test
> [classlib][math] unexpected ArrayIndexOutOfBoundsException for BigInteger.isProbablePrime(110)
> ----------------------------------------------------------------------------------------------
>
> Key: HARMONY-790
> URL: http://issues.apache.org/jira/browse/HARMONY-790
> Project: Harmony
> Type: Bug
> Components: Classlib
> Reporter: Vladimir Ivanov
> Attachments: BigIntegerTest.patch
>
> The Harmony method java.math.BigInteger.isProbablePrime(110) throws ArrayIndexOutOfBoundsException while RI returns correct value.
> ================= test.java ======================
> import java.math.BigInteger;
> import java.util.Random;
> public class test {
> public static void main(String args[] ) {
> BigInteger bi = new BigInteger(9, 9, new Random());
> try {
> bi.isProbablePrime(109);
> System.out.println("uncertainty = 109, passed");
> } catch (ArrayIndexOutOfBoundsException e) {
> System.out.println("uncertainty = 109, failed: " + e);
> }
> try {
> bi.isProbablePrime(110);
> System.out.println("uncertainy = 110, passed");
> } catch (ArrayIndexOutOfBoundsException e) {
> System.out.println("uncertainty = 110, failed: " + e);
> e.printStackTrace();
> }
> try {
> bi.isProbablePrime(110);
> System.out.println("uncertainy = 500, passed");
> } catch (ArrayIndexOutOfBoundsException e) {
> System.out.println("uncertainty = 500, failed: " + e);
> }
> }
> }
> ==============================================
> Output:
> C:\tmp\tmp17>C:\jrockit-jdk1.5.0-windows-ia32\bin\java.exe -showversion test
> java version "1.5.0"
> Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0-b64)
> BEA WebLogic JRockit(R) (build dra-38972-20041208-2001-win-ia32, R25.0.0-75, GC: System optimized over throughput (initial strategy singleparpar))
> uncertainty = 109, passed
> uncertainy = 110, passed
> uncertainy = 500, passed
> C:\tmp\tmp17>C:\harmony\trunk_0427\deploy\jdk\jre\bin\java.exe -showversion test
> java version 1.5 (subset)
> (c) Copyright 1991, 2006 The Apache Software Foundation or its licensors, as applicable.
> uncertainty = 109, passed
> uncertainty = 110, failed: java.lang.ArrayIndexOutOfBoundsException: Array index out of range: 54
> java.lang.ArrayIndexOutOfBoundsException: Array index out of range: 54
> at java.math.BigInteger.isProbablePrime(BigInteger.java:1739)
> at test.main(test.java:14)
> uncertainty = 500, failed: java.lang.ArrayIndexOutOfBoundsException: Array index out of range: 54
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