{"id":"checksum-mask-is-python2-compat","text":"The `& 0xFFFFFFFF` mask in `WAL._checksum` is a Python 2 portability idiom — Python 3's `zlib.crc32` already returns unsigned values, making the mask technically redundant but kept as defensive code","truth_value":"IN","source":"entries/2026/05/29/b-tree-storage-engine-btree-_checksum.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"explanation":{"steps":[{"node":"checksum-mask-is-python2-compat","truth_value":"IN","reason":"premise"}]}}