Bug#712537: python3-gi: spawn_async returns pid as 0

[Helmut Grohne]

Package: python3-gi
Version: 3.8.2-1
Severity: normal

Dear Maintainer,

Please consider the following interaction with the python3.3
interpreter.

$ python3
Python 3.2.4 (default, May  8 2013, 20:55:18) 
[GCC 4.7.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> from gi.repository import GObject
>>> GObject.spawn_async(["/bin/sleep", "1"], flags=GObject.SPAWN_DO_NOT_REAP_CHILD)
(0, None, None, None)
>>> 

According to the documentation at
https://developer.gnome.org/pygobject/stable/glib-functions.html#function-glib--spawn-async
the first element of the tuple returned by spawn_async is the pid of the
spawned process. When using python 2.x (python-gi), this is the case as
advertise. When using python3, the pid is not correctly reported as can
be seen above. Both versions actually start the process.

Helmut

-- System Information:
Versions of packages python3-gi depends on:
ii  gir1.2-glib-2.0        1.36.0-2+b1
ii  libc6                  2.17-5
ii  libffi6                3.0.13-4
ii  libgirepository-1.0-1  1.36.0-2+b1
ii  libglib2.0-0           2.36.3-1
ii  multiarch-support      2.17-5
ii  python3                3.2.3-7