osobhandClaude Opus 5.5 d9e4dfb6e6 fix(format): cap the Zstandard window at what the output can need ...

ruzstd reserves a frame's declared window (up to its 100 MiB default)
when a decoder is reset for a new frame, before decoding anything. The
Blosc, Blosc2 and bitshuffle decoders reuse one decoder per chunk, so a
Blosc2 chunk of two 16-byte streams, each declaring a 96 MiB window,
allocated 128 MiB. zstd_decode_into now sets the decoder's maximum window
to twice the stream's output (at least 128 KiB): c-blosc, c-blosc2 and
bitshuffle compress each block in one call with its size known, so
libzstd's window never exceeds the block.

Found by tracking peak allocation in the Blosc2 fuzz test.

Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>

2026-09-26 11:34:28 -05:00

..

fixtures

feat(format): read Blosc2 (filter 32026) in pure Rust

2026-09-26 10:22:22 -05:00

blosc2_alloc_bounds.rs

fix(format): cap the Zstandard window at what the output can need

2026-09-26 11:34:28 -05:00

derive_tests.rs

ci: wire up CI, fix no_std build, fix stale package names in scripts

2026-08-05 10:50:13 -07:00

integration_test.rs

fix(format): read unmapped VDS elements as the virtual dataset's fill value

2026-09-25 22:03:47 -05:00

reference_tests.rs

test: let the interop suites find a Python that actually has h5py

2026-09-19 20:44:54 -07:00

robustness_tests.rs

test(format): keep the 2026-09-20 B-tree v2 fuzz crash as a regression

2026-09-25 20:38:34 -05:00

vl_heap_bounds.rs

fix(format): bound what a VL read retains on a crafted global heap

2026-09-26 08:56:42 -05:00

writer_h5py_tests.rs

fix(format): record the content size in zstd frames

2026-09-25 21:04:29 -05:00

writer_meta_tests.rs

feat(format): nested groups, soft/hard/external links and creation order in the writer

2026-09-26 08:33:46 -05:00