OverflowError: Python int too large to convert to C long

[Tom Cook]

Meliae doesn't play nicely with PyGObject. As well as #1883514, it is trivial to produce a "Python int too large to convert to C long". Code to reproduce the problem:

=== Begin Dockerfile ===
FROM python:3.9-bullseye

RUN apt update
RUN apt install -y libgirepository1.0-dev
RUN pip install meliae PyGObject

COPY test.py /
ENTRYPOINT ["/usr/local/bin/python3", "/test.py"]
=== End Dockerfile ===

=== Begin test.py ===
from gi.repository import GObject
import meliae.scanner

x = GObject.Object()
with open('tst', 'wb') as f:
    meliae.scanner.dump_all_objects(f)
=== End test.py ===

$ docker built . -t gobject-test
$ docker run gobject-test
OverflowError: Python int too large to convert to C long

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/test.py", line 6, in <module>
    meliae.scanner.dump_all_objects(f)
  File "/usr/local/lib/python3.6/site-packages/meliae/scanner.py", line 141, in dump_all_objects
    dump_all_referenced(outf, all_objs, is_pending=True)
  File "/usr/local/lib/python3.6/site-packages/meliae/scanner.py", line 71, in dump_all_referenced
    _scanner.dump_object_info(outf, next, recurse_depth=0)
SystemError: <built-in function dump_object_info> returned a result with an error set

I've confirmed this on Python 3.6 and 3.10.