ReverseComparator fails on Integer.MIN_VALUE
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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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