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From "Imran Ghory (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HARMONY-5088) [classlib][math] BigInteger(int numBits, Random rnd) constructor contains overflow
Date Wed, 21 Nov 2007 18:10:43 GMT

    [ https://issues.apache.org/jira/browse/HARMONY-5088?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12544544
] 

Imran Ghory commented on HARMONY-5088:
--------------------------------------

I just googled for confirmation of  that being the correct behaviour and turned up the following:

http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=5050278

If the RI has the same behaviour it looks like it's a regression on their part, it looks like
that constructor worked for Interger.MAX_VALUE in  RI in version 1.4.2 (I haven't verified
this).


> [classlib][math] BigInteger(int numBits, Random rnd)  constructor contains overflow
> -----------------------------------------------------------------------------------
>
>                 Key: HARMONY-5088
>                 URL: https://issues.apache.org/jira/browse/HARMONY-5088
>             Project: Harmony
>          Issue Type: Bug
>          Components: Classlib
>            Reporter: Imran Ghory
>            Assignee: Paulex Yang
>
> If numBits = Integer.MAX_VALUE then you have an integer overflow situation on the following
lines:
> numberLength = (numBits + 31) >> 5;
> digits = new int[numberLength];

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