[PyQt] eric crashes in QX11WindowSurface dtor

[Hans-Peter Jansen]

Hi Phil,

I suffer from a 100% reproducible crash on eric shutdown:

[when catched with gdb directly:]
Program received signal SIGSEGV, Segmentation fault.
0xb65eab22 in ~QX11WindowSurface (this=0xa5d1ba8) at painting/qwindowsurface_x11.cpp:84
84              XFreeGC(X11->display, gc);

Application: eric4 (eric4.py), signal: Segmentation fault
[KCrash Handler]
#6  0xb5d7eb22 in ~QX11WindowSurface (this=0xa7fb648) at painting/qwindowsurface_x11.cpp:84
#7  0xb5d77a46 in ~QWidgetBackingStore (this=0xa7e2a18) at painting/qbackingstore.cpp:832
#8  0xb5bd8346 in QWidgetPrivate::deleteExtra (this=0xa72cfd0) at kernel/qwidget.cpp:1503
#9  0xb5bd8b25 in ~QWidgetPrivate (this=0xa72cfd0) at kernel/qwidget.cpp:227
#10 0xb5fc36da in ~QMenuPrivate (this=0xa72cfd0) at widgets/qmenu_p.h:151
#11 0xb7020531 in ~QObject (this=0xa72cf80) at kernel/qobject.cpp:857
#12 0xb5bde7bf in ~QWidget (this=0xa72cf80) at kernel/qwidget.cpp:1380
#13 0xb5fb8750 in ~QMenu (this=0xa72cf80) at widgets/qmenu.cpp:1380
#14 0xb679062c in ~sipQMenu (this=0xa72cf80) at sipQtGuiQMenu.cpp:311
#15 0xb678b180 in release_QMenu (sipCppV=0xa72cf80, sipState=262) at sipQtGuiQMenu.cpp:2777
#16 0xb678b1d7 in dealloc_QMenu (sipSelf=0x19) at sipQtGuiQMenu.cpp:2791
#17 0xb7123a9b in forgetObject () from /usr/lib/python2.6/site-packages/sip.so
#18 0xb7123ad1 in sipWrapper_dealloc () from /usr/lib/python2.6/site-packages/sip.so
#19 0xb765165d in subtype_dealloc (self=0xa62976c) at Objects/typeobject.c:1018
#20 0xb76346c1 in dict_dealloc (mp=0xa5dd934) at Objects/dictobject.c:911
#21 0xb7121a7b in sipSimpleWrapper_clear () from /usr/lib/python2.6/site-packages/sip.so
#22 0xb712234f in sipWrapper_clear () from /usr/lib/python2.6/site-packages/sip.so
#23 0xb7652ed2 in subtype_clear (self=0xa61afac) at Objects/typeobject.c:893
#24 0xb76b7fb6 in collect (generation=2) at Modules/gcmodule.c:714
#25 0xb76b8582 in PyGC_Collect () at Modules/gcmodule.c:1289
#26 0xb76a9db2 in Py_Finalize () at Python/pythonrun.c:420
#27 0xb76a9f47 in Py_Exit (sts=0) at Python/pythonrun.c:1689
#28 0xb76aa060 in handle_system_exit () at Python/pythonrun.c:1111
#29 0xb76aa0ed in PyErr_PrintEx (set_sys_last_vars=1) at Python/pythonrun.c:1121
#30 0xb76aa3fe in PyErr_Print () at Python/pythonrun.c:1030
#31 0xb76aa59e in PyRun_SimpleFileExFlags (fp=0xbffbef37, filename=0xbffbef37 "/usr/lib/python2.6/site-packages/eric4/eric4.py", closeit=1, 
flags=0xbffbd7e8) at Python/pythonrun.c:930
#32 0xb76aa818 in PyRun_AnyFileExFlags (fp=0x805ecd8, filename=0xbffbef37 "/usr/lib/python2.6/site-packages/eric4/eric4.py", closeit=1, 
flags=0xbffbd7e8) at Python/pythonrun.c:731
#33 0xb76b6e12 in Py_Main (argc=1, argv=0xbffbd8b4) at Modules/main.c:597
#34 0x08048692 in main (argc=) at Modules/python.c:23


All it takes is running eric, load a file, split the view 
"New view (with new split)" via context menu, and quit.

My environment: openSUSE 11.1 (all packages available on build service)
qscintilla-2.4
qt4-4.5.3
python-sip-4.10
python-qt4-4.7
eric-4.4.1

Any idea? Are you able to reproduce it? 

Let me know, if you need more feedback.

TIA,
Pete