fix: memory: fix Bytes move assignment ownership transfer#82
Merged
lucasfang merged 6 commits intoalibaba:mainfrom Feb 4, 2026
Merged
fix: memory: fix Bytes move assignment ownership transfer#82lucasfang merged 6 commits intoalibaba:mainfrom
lucasfang merged 6 commits intoalibaba:mainfrom
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Pull request overview
This PR fixes the move-assignment implementation of paimon::Bytes to avoid a destructor + memcpy pattern that could lead to double-free or undefined behavior and instead performs an explicit, safe ownership transfer.
Changes:
- Replace
Bytes::operator=(Bytes&&)implementation fromthis->~Bytes(); memcpy; placement-newto explicit release of current buffer viapool_->Freefollowed by field-wise move ofpool_,data_, andsize_. - Clear the moved-from
Bytesobject by nullingpool_anddata_and zeroingsize_to make its destructor a no-op and avoid double-free.
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lxy-9602
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Jan 27, 2026
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Purpose
Linked issue: close #xxx
Fix the move assignment of
Bytesto avoid the~Bytes()+memcpypattern that can cause double-free/UB. The new implementation explicitly releases current memory, takes ownership fromother, and then nulls out the source.Tests
Not run.
API and Format
No API/storage/protocol changes (internal implementation only).
Documentation
No.