Processed: HDF 4.3.1 uploaded to unstable

[Antonio Valentino]

Dear Bas,

Il 22/11/25 20:52, Sebastiaan Couwenberg ha scritto:
> On 11/22/25 8:41 PM, Antonio Valentino wrote:
>> I finally managed to come up with a kind of solution that, apparently, 
>> fixes the segfaults both in rioxarray and satpy.
>> The build of those packages still fails due to unrelated issues, and 
>> both of them have new upstream releases.
>>
>> The attached patch basically reverts the content of hdf4 mfhdf/libsrc/ 
>> file.c to the version 4.3.0 of HDF4 itself.
>>
>> I still would need to do some tests to doublecheck that it does not 
>> introduces new errors in dependent packages.
>> According to the HDF4 changelog it could introduce some memory leak.
>>
>> Apart for the additional checks I'm not sure how to proceed.
> 
> Reverting changes in hdf4 needs to be discussed with upstream. We can 
> carry the patch if upstream agrees to merge those changes.
> 
>> I would appreciate if you could give a look to the patch.
> 
> Looks simple enough, but I can't judge its correctness.
> 
>> Then, maybe, it would be good to have an upload to experimental.
>> What do you think? Would you be available to do it?
> 
> Yes, after getting hdf4 upstream involved in this discussion.
> 
>> Do you want me to file bug report or prepare a merge request in salsa?
> 
> Let's start by filing an issue with hdf4 upstream.
> 
>> Once we are sure that the patch is really working I will file bug 
>> report / PR to https://github.com/HDFGroup/hdf4/
> Why not get hdf4 upstream involved already as you have results for 
> rioxarray & satpy with those changes reverted?

I just fear that the discussion with HDF4 developers could be tool long 
and I would like to avoid that other packages are removed form testing.
The problem is that the issue involves a quite long stack of SW

hdf4 - gdal - rasterio - rioxarray

in one case, and

hdf4 - python-hdf4 - satpy

in the other case.
An I only have a reasonably small example to reproduce the issue for 
rioxarray.

By the way I can file a bug report against hdf4 immediately if you prefer.

kind regards
-- 
Antonio Valentino