Regression with miniz_oxide>0.8.5

[musicinmybrain]

$ git clone https://github.com/milesgranger/cramjam.git
$ cd cramjam
$ uv venv _e
$ . _e/bin/activate
(_e) $ uv pip install -e .[dev]
(_e) $ python -m pytest --ignore=benchmarks/test_bench.py -n auto
[…]
=================================== 742 passed, 1 skipped in 4.96s ===================================
(_e) $ cargo update miniz_oxide
    Updating crates.io index
     Locking 1 package to latest compatible version
    Updating miniz_oxide v0.8.5 -> v0.8.8
note: pass `--verbose` to see 41 unchanged dependencies behind latest
(_e) $ uv pip install -e .[dev]
(_e) $ python -m pytest --ignore=benchmarks/test_bench.py -n auto
[…]
============================================== FAILURES ==============================================
_______________________________ test_variants_raise_exception[deflate] _______________________________
[gw5] linux -- Python 3.13.3 /home/ben/src/forks/cramjam/_e/bin/python

variant_str = 'deflate'

    @pytest.mark.parametrize("variant_str", VARIANTS)
    def test_variants_raise_exception(variant_str):
        variant = getattr(cramjam, variant_str)
>       with pytest.raises(cramjam.DecompressionError):
E       Failed: DID NOT RAISE <class 'cramjam.DecompressionError'>

tests/test_variants.py:96: Failed
====================================== short test summary info =======================================
FAILED tests/test_variants.py::test_variants_raise_exception[deflate] - Failed: DID NOT RAISE <class 'cramjam.DecompressionError'>
============================== 1 failed, 741 passed, 1 skipped in 4.30s ==============================

I tried cargo update miniz_oxide --precise 0.8.7, rebuilt, ran tests again, and still reproduced the issue, then again for the yanked 0.8.6 release, so this was introduced after 0.8.5.

https://github.com/Frommi/miniz_oxide/blob/master/CHANGELOG.md#087---2025-04-03

It’s not immediately obvious to me how to investigate this further.

[milesgranger]

Awesome, thanks for the heads-up w/ this!