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https://issues.apache.org/jira/browse/JENA-104?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Stephen Allen updated JENA-104:
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Attachment: JENA-104-r1159330.patch
> ReverseComparator fails on Integer.MIN_VALUE
> --------------------------------------------
>
> Key: JENA-104
> URL: https://issues.apache.org/jira/browse/JENA-104
> Project: Jena
> Issue Type: Bug
> Reporter: Stephen Allen
> Priority: Minor
> Attachments: JENA-104-r1159330.patch
>
>
> There is a subtle bug in ReverseComparator. If the forward comparator
> returned Integer.MIN_VALUE, so would the reverse comparator. Using signed
> integer types, there are more negative numbers available than positive ones
> (range is -2^31 to 2^31-1 inclusive) and negating the minimum value is
> effectively a no-op. We can avoid the problem by reversing the order of the
> arguments instead.
> I've included a patch and tests.
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