Thank you, Berto, for looking into this one and forwarding it upstream.
There will be some difference between your system, where the minimal case
that was supplied works well without any segmentation fault, and my system
where the minimal case leads to a segmentation fault.
Likely there's a package that I didn't install and which is installed on
I need to dig into this further, to be able to kind of work around this bug
for the time being, by installing a package I don't know yet, till you have