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Author SHA1 Message Date
osobhandClaude Opus 5.5 a7de15534c docs: conformance report after the read-gap fixes (569 of 697 ok) 
Regenerated on tank at 10d1029: ok 467 -> 569, our-error 123 -> 14,
mismatch 15 -> 22 (six user-defined-link files moved from our-error to a
listing difference), no panics, hangs, crashes or OOM. Baseline raised.

Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>
 2026-09-25 22:46:37 -05:00
osobhandClaude Opus 5.5 10d1029ead conformance: probe files with a user block and VDS the library's way 
Superblock::parse now refuses a user-block offset, and the raw read path
no longer guesses a VDS fill value. The probe looks at the file from the
superblock on and reads virtual datasets with vds::read_virtual_dataset,
the dataset's fill value and its source-derived extent.

Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>
 2026-09-25 22:46:08 -05:00
osobhandClaude Opus 5.5 5c2f656fe7 docs: first conformance report and baseline (42b81d9, tank)
CI / test-arm64 (pull_request) Successful in 1m6s
Details
CI / test (pull_request) Successful in 5m0s
Details 
467 of 697 files read identically to h5py 3.16 / HDF5 2.0, 123 our-error,
15 mismatch (2 an h5py big-endian VL bug), 92 libhdf5 cannot read; no
panics, hangs, crashes or OOM.

Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>
 2026-09-25 22:06:00 -05:00
osobhandClaude Opus 5.5 9179aa356e feat(conformance): in-repo, reproducible conformance sweep 
conformance/run.sh fetches eight public HDF5 corpora pinned by commit
(conformance/corpus.txt) into a gitignored cache, reads every file with
clawhdf5 (conformance/probe, a crate outside the workspace) and with
h5py/libhdf5 (ref.py), and the CVE files with h5dump, each under a timeout
and an address-space limit; compare.py classifies the files, report.py
writes CONFORMANCE.md and check.py gates on panics/hangs/crashes/OOM and on
regressions against conformance/baseline.json. ~25 s once cached.

Changes from the ad-hoc audit harness:
- the probe compares non-IEEE-layout floats (N-Bit) and integers with a bit
  offset or reduced precision as the values libhdf5 converts them to, not
  raw file bytes: 8 files that showed as mismatches now read identically;
- ref.py exits without tearing down h5py objects: libhdf5 2.0 aborts while
  freeing them for two files about half the time, which flipped them
  between ok and h5py-cannot-read from run to run;
- the file list is defined (list_files.py): netCDF classic files are left
  out, 11 HDF5 files the ad-hoc sweep missed are in.

Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>
 2026-09-25 22:06:00 -05:00