Bug#758619: more complete backtrace

[Simon McVittie]

# the real bug is #671785 but it's easy to avoid it in reportbug
reassign 758619 reportbug
tags 758619 + patch
thanks

On 21/08/14 09:37, Eric Valette wrote:
> Well instead of correcting the symptom, I would prefer to correct the
> bug itself. If locking mecahnism is hazardous, then it eman beahavior is
> hazardous and that could lead to other bugs later.

Indeed. I think it's pygtk that is getting this wrong, and as you
pointed out in another mail, we have already had a bug to track that,
#671785, since 2012. The upstream bug has had no activity since 2012
either, until today.

However, reportbug can easily work around it, whereas a solution in
pygtk is rather more involved (and might never happen, since pygtk is
deprecated upstream); so I think it would be best if the reportbug
maintainers apply the one-line workaround, which is to turn off the
broken feature with the patch that can be found at
<https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=671785#53> (the
functional part is reproduced at the end of this mail). Let's use bug
number 758619 to track that.

I now realise that the steps to reproduce the bug are:

* you have either GLib from experimental on Linux, or kFreeBSD,
  so the locking error is fatal;
* you have python-gtk2 and $DISPLAY is set, so reportbug's gtk2 UI
  module can load; as a side-effect, python-gtk2 registers the faulty
  PyOS_InputHook implementation;
* but you *do not* use the gtk2 UI module, so reportbug calls
  raw_input(), which results in the PyOS_InputHook being called

and with that information, I can reproduce it in an experimental chroot
with "xvfb-run reportbug reportbug". The patch below fixes it.

As much as I'd like to say "this is release-critical for python-gtk2,
which is also dead upstream, so let's remove it from Debian and tell
everyone to use Gtk 3 via pygi", I don't think the maintainers of its
300 reverse dependencies would be very impressed.

    S

--- gtk2_ui.py.orig	2014-08-21 09:28:45.375375786 +0000
+++ gtk2_ui.py	2014-08-21 09:29:02.843495121 +0000
@@ -35,6 +35,7 @@
 except:
     has_spell = False

+gtk.set_interactive (0)
 gtk.gdk.threads_init ()

 import sys