fix: avoid signed integer overflow UB in BloomFilter and DeltaVarintCompressor#329
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lxy-9602
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Purpose
No Linked issue.
Fixes signed integer overflow undefined behavior (UB) in utility classes (
bloom_filter.cpp,bloom_filter64.cpp,delta_varint_compressor.cpp). Both issues stem from porting Java integer arithmetic (which wraps mod 2^N) directly to C++ signed types (where signed overflow is UB and may fail under UBSan or compiler optimization).Tests
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