osobhandClaude Opus 5.5
993214723e
The review read libhdf5's H5O__chunk_deserialize as accepting a v2
message that runs up to 4 bytes into the chunk's checksum, since it
bounds message bodies by the whole chunk buffer. It does not accept it:
the message loop stops at the checksum, and the checksum read that
follows starts past it and overruns the chunk ("ran off end of input
buffer while decoding"). h5py refuses such files whether the message
runs 1, 4 or 5 bytes in, and so does clawhdf5, with its own error text.
No code change; the test pins the agreement and a comment records why.
Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>
clawhdf5-format
Pure-Rust HDF5 binary format parsing and writing — no C dependencies.
Features
- Zero-copy superblock, object header, and B-tree parsing
- Chunked dataset read/write with filter pipelines
no_stdsupport (disablestdfeature)- Optional parallel reads via Rayon
- SHA-256 provenance tracking
Usage
use clawhdf5_format::Superblock;
let data = std::fs::read("data.h5").unwrap();
let sb = Superblock::from_bytes(&data).unwrap();
println!("HDF5 version {}.{}", sb.version_major(), sb.version_minor());
License
MIT