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Type:
Bug
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Status: Closed
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Priority:
Major
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Resolution: Fixed
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Affects Version/s: None
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Component/s: core/other
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Labels:None
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Lucene Fields:New
Fixes after reviewing org.apache.lucene.util.FixedBitSet, LongBitSet and corresponding tests:
- Some methods rely on the fact that no bits are set after numBits (what I call 'ghost' bits here).
- cardinality, nextSetBit, intersects and others may yield wrong results
- If ghost bits are present, they may become visible after ensureCapacity is called.
- The tests deliberately create bitsets with ghost bits, but then do not detect these failures
- FixedBitSet.cardinality scans the complete backing array, even if only numWords are in use