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Fix UBSan report

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This commit is contained in:
Alexey Milovidov 2024-03-03 23:07:05 +01:00
parent aaec92f860
commit 8d25f27b19
1 changed files with 1 additions and 1 deletions
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2
src/Compression/CompressionCodecDoubleDelta.cpp
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@ -343,7 +343,7 @@ UInt32 compressDataForType(const char * source, UInt32 source_size, char * dest)
const auto sign = signed_dd < 0;
// -1 shrinks dd down to fit into number of bits, and there can't be 0, so it is OK.
const auto abs_value = static_cast<UnsignedDeltaType>(std::abs(signed_dd) - 1);
const auto abs_value = (sign ? -static_cast<UnsignedDeltaType>(signed_dd) : static_cast<UnsignedDeltaType>(signed_dd)) - 1;
const auto write_spec = getDeltaWriteSpec(signed_dd);
writer.writeBits(write_spec.prefix_bits, write_spec.prefix);