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docs: conformance report after the last non-ok files were classified (602 of 697 ok)
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Regenerated on tank: ok 600 -> 602 (attr_datatypes.hdf5 and
tcomplex_be.h5, compared against h5py's big-endian VL values corrected),
mismatch 2 -> 0; cve-2025-2308.h5 and cve-2025-44904.h5 are ref-bug
(h5py's values varied across six heaps in this run);
bad_nbit_parms_walk.h5 read the same in all six this run, so it stays
our-error, as the classification rule requires. Baseline raised.

Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>
This commit is contained in:
osobh
2026-09-27 23:39:41 -05:00
co-authored by Claude Opus 5.5
parent bf5a163dcf
commit 694ee0a090
2 changed files with 25 additions and 21 deletions
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CONFORMANCE.md
+14 -10
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@@ -13,15 +13,15 @@ fatal. This file is generated by `conformance/run.sh`; do not edit it by hand.
| | |
|---|---|
| date | 2026-09-28 03:33 UTC |
| clawhdf5 commit | `ff0b2f8a4e4ef105d7ff4694349ca475abf3f611` |
| date | 2026-09-28 04:29 UTC |
| clawhdf5 commit | `bf5a163dcf7fe28d651ada6545d8136ffeffc825` |
| machine | `tank`: AMD Ryzen 7 7800X3D 8-Core Processor, 16 CPUs, 61 GiB, Linux 7.0.0-34-generic x86_64 |
| command | `conformance/run.sh --no-fetch` |
| rustc | |
| command | `conformance/run.sh --no-fetch --update-baseline` |
| rustc | rustc 1.98.1 (48a229cea 2026-09-01) |
| reference | h5py 3.16.0, HDF5 2.0.0, numpy 2.5.3, hdf5plugin 7.1.0, Python 3.14.4 |
| h5dump | Version 1.14.6 (CVE corpus only) |
| limits | 20 s timeout (SIGKILL), 4096 MiB address space, per process; 16 files in parallel |
| runtime | 21 s probing + comparing (18 s fetch/build before it) |
| runtime | 20 s probing + comparing (5 s fetch/build before it) |
## Results
@@ -39,14 +39,14 @@ A file's class is the first that applies:
| NCAS-CMS_pyfive | 33 | 33 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| cve_hdf5 | 147 | 113 | 0 | 0 | 32 | 2 | 0 | 0 | 0 | 0 |
| h5py_data | 4 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| hdf5 | 466 | 405 | 0 | 0 | 60 | 1 | 0 | 0 | 0 | 0 |
| hdf5 | 466 | 405 | 1 | 0 | 60 | 0 | 0 | 0 | 0 | 0 |
| netcdf-c | 20 | 20 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| netcdf4-python | 18 | 18 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| usnistgov_h5wasm | 5 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| xarray-data | 4 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| **all** | **697** | **602** | **0** | **0** | **92** | **3** | **0** | **0** | **0** | **0** |
| **all** | **697** | **602** | **1** | **0** | **92** | **2** | **0** | **0** | **0** | **0** |
**Our errors and mismatches: 0.** Files not ok: 92 h5py-cannot-read, 3 ref-bug. 2 object(s) were compared against h5py's values corrected for a known h5py bug (2 identical to clawhdf5's; see *Reference bugs*).
**Our errors and mismatches: 1.** Files not ok: 1 our-error, 92 h5py-cannot-read, 2 ref-bug. 2 object(s) were compared against h5py's values corrected for a known h5py bug (2 identical to clawhdf5's; see *Reference bugs*).
Corpora (fetched by `conformance/fetch-corpus.sh` into the gitignored `conformance/.cache/`):
@@ -67,7 +67,11 @@ None.
## Our-error root causes
None.
Grouped by normalised error message. *files* counts files whose class this cause affects.
| files | objects | error | examples |
|---:|---:|---|---|
| 1 | 1 | `ChunkedReadError("…")` | `hdf5/test/testfiles/bad_nbit_parms_walk.h5` |
## Mismatch root causes
@@ -257,7 +261,7 @@ the same run; an object that reads the same every time goes back to *our-error*.
|---|---|---:|---|---|
| `cve_hdf5/cvefiles/cve-2025-2308.h5` | `/Scale_offset_long_long_data_le` | 6 | yes | the first chunk records minbits 11: its 12 values need 17 bytes of codes, and the 26-byte chunk holds 5 after its 21-byte header; libhdf5's scale-offset decoder reads past its buffer, and develop refuses the chunk ("Buffer too short") |
| `cve_hdf5/cvefiles/cve-2025-44904.h5` | `/Scale_offset_float_data_le` | 6 | yes | unfiltered chunks stored as 38 and 37 bytes for 48-byte chunks: 1.14/2.0 read the stored bytes into a buffer of that size and use it as the whole chunk (H5D__chunk_lock), so the rest is heap memory; develop refuses them ("incorrect chunk size returned from index for unfiltered chunk") |
| `hdf5/test/testfiles/bad_nbit_parms_walk.h5` | `/Nbit_int_data_le` | 3 | yes | the N-Bit parameter list holds 7 values (cd_values[0] = 7) where an integer needs 8: the decoder takes the bit offset from cd_values[7], past the list; libhdf5's own test (`test_filter_bad_params`, test/dsets.c on develop) requires the read to fail |
| `hdf5/test/testfiles/bad_nbit_parms_walk.h5` | `/Nbit_int_data_le` | 1 | **no** | the N-Bit parameter list holds 7 values (cd_values[0] = 7) where an integer needs 8: the decoder takes the bit offset from cd_values[7], past the list; libhdf5's own test (`test_filter_bad_params`, test/dsets.c on develop) requires the read to fail |
### Values corrected for a known h5py bug