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https://issues.apache.org/jira/browse/LUCENE-6409?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14485313#comment-14485313
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Adrien Grand commented on LUCENE-6409:
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Thanks for the fixes! I'm wondering that this new approach might cause bugs if
you create bit sets of length 0. Can you add tests for this case too?
> LongBitSet.ensureCapacity overflows on numBits > Integer.MaxValue
> -------------------------------------------------------------------
>
> Key: LUCENE-6409
> URL: https://issues.apache.org/jira/browse/LUCENE-6409
> Project: Lucene - Core
> Issue Type: Bug
> Components: core/other
> Reporter: Luc Vanlerberghe
>
> LongBitSet.ensureCapacity calculates the number of longs required to store
> the number of bits correctly and allocates a long[] accordingly, but then
> shifts the array length (which is an int!) left by 6 bits. The int should be
> cast to long *before* performing the shift.
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