[Bug 896836] Re: Segmentation fault when asking help() for the list of modules

[Alain Kalker]

>From Googling around, this looks to me quite similar to the problem
described here: http://blog.rabbitvcs.org/archives/312

The author points to the cause of a mixture of modules with both static
and dynamic gtk bindings being active at the same time.

Because `help()` (and pydoc for that matter) iterate over all modules,
actually importing them to get at the documentation, I believe that this
causes a similar incompatible mixture of 'active' modules to occur.

Can anyone confirm that this is actually the case?

-ack

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https://bugs.launchpad.net/bugs/896836

Title:
  Segmentation fault when asking help() for the list of modules

Status in “python2.7” package in Ubuntu:
  Confirmed

Bug description:
  Using Python 2.7.2 on Oneiric (package version is 2.7.2-7ubuntu2), I'm
  getting a consistent segmentation fault when I open the interactive
  help in a Python shell (i.e. typing "help()" in the shell) and then
  ask for the list of modules (by typing "modules").

  The error code returned is as follows:
  Please wait a moment while I gather a list of all available modules...

  /usr/lib/python2.7/dist-packages/gobject/constants.py:24: Warning: g_boxed_type_register_static: assertion `g_type_from_name (name) == 0' failed
    import gobject._gobject
  /usr/lib/python2.7/dist-packages/gtk-2.0/gtk/__init__.py:40: Warning: g_boxed_type_register_static: assertion `g_type_from_name (name) == 0' failed
    from gtk import _gtk

  ** (python:5116): CRITICAL **: pyg_register_boxed: assertion `boxed_type != 0' failed
  /usr/lib/python2.7/dist-packages/gtk-2.0/gtk/__init__.py:40: Warning: cannot register existing type `GdkDevice'
    from gtk import _gtk
  /usr/lib/python2.7/dist-packages/gtk-2.0/gtk/__init__.py:40: Warning: g_type_get_qdata: assertion `node != NULL' failed
    from gtk import _gtk
  Segmentation fault

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