[cups] Crash when using cupsfilter, no crash when printing normally (Zebra ZC400)

[Jonathan Ernst]

Hello,

I'm trying to produce a raw output that I can send as raw to my Zebra ZC400
as follows :

$ cupsfilter -e -p zebra4pihyve.ppd -m printer/Zebra ~/Bureau/test.pdf

Full results here : https://pastebin.com/8ftXaqEP

However it seems that it crashes when calling the last filter.

I have tried to do it in several steps :

cupsfilter -e -p zebra4pihyve.ppd -m application/vnd.cups-raster
~/Bureau/test.pdf > out

--> works

cupsfilter -e -p zebra4pihyve.ppd -i application/vnd.cups-raster -m
printer/foo out > out2

-> crashes
(what():  basic_string::_S_construct null not valid
ERROR: /usr/lib/cups/filter/rastertojg (PID 30461) crashed on signal 6)

Here is the list of the filters involved

$ cupsfilter -e -p zebra4pihyve.ppd -m printer/foo ~/Bureau/test.pdf
--list-filters
cupsfilter: File "/usr/lib/cups/filter/rastertojg" permissions OK
(0100755/uid=0/gid=0).
cupsfilter: File "/usr/lib/cups/filter/pdftojgpdf" permissions OK
(0100755/uid=0/gid=0).
pdftojgpdf
pdftopdf
gstoraster
/usr/lib/cups/filter/rastertojg

Now what I don't understand is that I have not problem printing to this
printer and don't understand how the "normal" cups pipeline is different
from what I do with cupsfilter.

I would really appreciate it if someone could give me a hint ;-)

Best regards.