python2.7 crashed with SIGSEGV in gtk_box_pack()

[Michael Rawson]

Precise pangolin ubuntu system, fully updated.

I was playing around with python and pygi, with this code:

from gi.repository import Gtk

class BottomBox(Gtk.Box):
 def __init__(self):
  self.Lowerlimit = Gtk.SpinButton()
  self.Upperlimit = Gtk.SpinButton()
  self.GoButton = Gtk.Button()
  self.pack_start(self.Lowerlimit, True, False, 0)
  self.pack_start(self.Upperlimit, True, False, 0)
  self.pack_start(self.GoButton, True, False, 0)

bottombox = BottomBox()
win = Gtk.Window()
win.connect("delete-event", Gtk.main_quit)
win.add(bottombox)
win.show_all()
Gtk.main()

I realise that it's probably my code that is bad, but I'm guessing python shouldn't segfault. If it is meant to, then please dismiss the bug. Thanks!

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: python2.7-minimal 2.7.2-13ubuntu4
ProcVersionSignature: Ubuntu 3.2.0-10.17-generic 3.2.1
Uname: Linux 3.2.0-10-generic x86_64
ApportVersion: 1.91-0ubuntu1
Architecture: amd64
CrashCounter: 1
Date: Sun Jan 22 22:45:29 2012
ExecutablePath: /usr/bin/python2.7
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20120114)
ProcCmdline: python gtktest.py
ProcEnviron:
 SHELL=/bin/bash
 PATH=(custom, no user)
 LANG=en_GB.UTF-8
 LANGUAGE=en_GB:en
SegvAnalysis:
 Segfault happened at: 0x7fa34a2b6778 <gtk_box_pack+40>: mov 0x28(%rdi),%rdx
 PC (0x7fa34a2b6778) ok
 source "0x28(%rdi)" (0x00000028) not located in a known VMA region (needed readable region)!
 destination "%rdx" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: python2.7
StacktraceTop:
 gtk_box_pack (box=0x0, child=0x126b090, expand=1, fill=0, padding=0, pack_type=GTK_PACK_START) at /build/buildd/gtk+3.0-3.3.8/./gtk/gtkbox.c:974
 ffi_call_unix64 () from /usr/lib/x86_64-linux-gnu/libffi.so.6
 ffi_call () from /usr/lib/x86_64-linux-gnu/libffi.so.6
 ?? () from /usr/lib/libgirepository-1.0.so.1
 g_function_info_invoke () from /usr/lib/libgirepository-1.0.so.1
Title: python2.7 crashed with SIGSEGV in gtk_box_pack()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

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