osobhandClaude Opus 5.5
36356ba8a1
Compound datatype version 1 carries, per member, a dimensionality and four dimension sizes (HDF5 before 1.4 had no array class). The parser skipped those 28 bytes, so a member such as `f: f32[4]` came back as a single f32 at the member's offset: the compound's size was right but its members were wrong. libhdf5 wraps such a member in an array type of the first `dimensionality` sizes and ignores the permutation; do the same, and reject a dimensionality above 4 as libhdf5 does. Only files old enough to also use layout message v1 have these, so this became reachable with the previous commit (tarrold.h5, tcompound.h5). Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>
13 lines
696 B
Markdown
13 lines
696 B
Markdown
# Legacy (HDF5 1.4/1.6-era) fixtures
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Unmodified copies of the HDF Group's own test files from
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https://github.com/HDFGroup/hdf5 at a3cf1ea82cc7a66e50029a688121e1b105a7ce88
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(BSD-style license, see that repository's `LICENSE`). Current libraries cannot
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write these structures, so they are kept as files.
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| File | Upstream path | Exercises |
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| `deflate.h5` | `test/testfiles/deflate.h5` | Data Layout message v1, chunked + deflate (v1 B-tree index) |
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| `h5ex_g_iterate.h5` | `HDF5Examples/C/H5G/h5ex_g_iterate.h5` | Data Layout message v2, contiguous; an unallocated dataset |
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| `tarrold.h5` | `test/testfiles/tarrold.h5` | Compound datatype v1 members with legacy array dimensions |
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