Bug#875282: diffoscope: AttributeError: 'NoneType' object has no attribute 'get_member'

[Ximin Luo]

Mattia Rizzolo:
> [..]
>   File "/usr/lib/python3/dist-packages/diffoscope/comparators/deb.py", line 102, in control
>     control_file = self.as_container.control_tar.as_container.lookup_file('./control')
>   File "/usr/lib/python3/dist-packages/diffoscope/comparators/deb.py", line 78, in control_tar
>     return specialize(member.as_container.get_member('content'))
> AttributeError: 'NoneType' object has no attribute 'get_member'
> 

This is caused by #876316, file misdetects control.tar.gz as "DOS/MBR boot sector". The rest of deb.py assumes that the detection always succeeds correctly and does stuff like ".get_member" without checking whether it failed.

In the meantime I'll see if I can get diffoscope to work around this somehow.

X

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