[jira] [Resolved] (LUCENE-5272) OpenBitSet.ensureCapacity does not modify numBits

["Shai Erera (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/LUCENE-5272?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Shai Erera resolved LUCENE-5272.
--------------------------------

       Resolution: Fixed
    Fix Version/s: 5.0
                   4.6
         Assignee: Shai Erera
    Lucene Fields: New,Patch Available  (was: New)

Committed to trunk and 4x.

> OpenBitSet.ensureCapacity does not modify numBits
> -------------------------------------------------
>
>                 Key: LUCENE-5272
>                 URL: https://issues.apache.org/jira/browse/LUCENE-5272
>             Project: Lucene - Core
>          Issue Type: Bug
>          Components: core/index
>            Reporter: Shai Erera
>            Assignee: Shai Erera
>             Fix For: 4.6, 5.0
>
>         Attachments: LUCENE-5272.patch, LUCENE-5272.patch
>
>
> It's a simple bug, reproduced by this simple test:
> {code}
>   public void testEnsureCapacity() {
>     OpenBitSet bits = new OpenBitSet(1);
>     bits.fastSet(0);
>     bits.ensureCapacity(5); // make room for more bits
>     bits.fastSet(2);
>   }
> {code}
> The problem is that {{numBits}} which is used only for assrets isn't modified by ensureCapacity and so the next fastSet trips the assert. I guess we should also fix ensureCapacityWords and test it too.
> I may not be able to fix this until Sunday though, so if anyone wants to fix it before (maybe it can make it into 4.5.1), feel free.



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