A trace using gdb on karmic. Application (patched version of apport-
kde) crashes on exit. The run and exit code:
# Don't exec_() here. There is no main interface and the dialogs are
# exec_()ed independently.
ret = int(UserInterface.run_argv())
print "run_argv returned"
KApplication.exit(ret)
print "kapplication.exit returned"
sys.exit(ret)
The output and trace:
run_argv returned
kapplication.exit returned
Program received signal SIGSEGV, Segmentation fault.
0x052c1ce2 in ~QX11WindowSurface (this=0x8ad3e20, __in_chrg=<value optimized
out>) at painting/qwindowsurface_x11.cpp:84
84 painting/qwindowsurface_x11.cpp: No such file or directory.
in painting/qwindowsurface_x11.cpp
Current language: auto; currently c++
(gdb) backtrace
#0 0x052c1ce2 in ~QX11WindowSurface (this=0x8ad3e20, __in_chrg=<value
optimized out>) at painting/qwindowsurface_x11.cpp:84
#1 0x052ba946 in ~QWidgetBackingStore (this=0x8ad3df0, __in_chrg=<value
optimized out>) at painting/qbackingstore.cpp:829
#2 0x0511c944 in QWidgetPrivate::deleteExtra (this=0x8aadf30) at
kernel/qwidget.cpp:1503
#3 0x0511d0e5 in ~QWidgetPrivate (this=0x8aadf30, __in_chrg=<value optimized
out>) at kernel/qwidget.cpp:227
#4 0x055a6189 in ~QDialogPrivate (this=0x8aadf30, __in_chrg=<value optimized
out>) at ../../include/QtGui/private/../../../src/gui/dialogs/qdialog_p.h:67
#5 0x005de85a in ~QObject (this=0x8b825d8, __in_chrg=<value optimized out>) at
kernel/qobject.cpp:857
#6 0x0512294f in ~QWidget (this=0x8b825d8, __in_chrg=<value optimized out>) at
kernel/qwidget.cpp:1380
#7 0x055bde44 in ~QDialog (this=0x8b825d8, __in_chrg=<value optimized out>) at
dialogs/qdialog.cpp:298
#8 0x01278653 in ?? () from /usr/lib/pymodules/python2.6/PyQt4/QtGui.so
#9 0x012177a6 in ?? () from /usr/lib/pymodules/python2.6/PyQt4/QtGui.so
#10 0x012177e9 in ?? () from /usr/lib/pymodules/python2.6/PyQt4/QtGui.so
#11 0x0038d588 in ?? () from /usr/lib/pymodules/python2.6/sip.so
#12 0x0038d5c1 in ?? () from /usr/lib/pymodules/python2.6/sip.so
#13 0x080a8e13 in subtype_dealloc (self=0x8baf4ac) at
../Objects/typeobject.c:1024
#14 0x0808e574 in dict_dealloc (mp=0x88464f4) at ../Objects/dictobject.c:911
#15 0x0806a3eb in instance_dealloc (inst=0x8cc1a8c) at
../Objects/classobject.c:668
#16 0x0808ce59 in insertdict (mp=0xb7fd61c4, key=0xb7ebb4a8, hash=-414803461,
value=0x8245f58) at ../Objects/dictobject.c:459
#17 0x0808f2b7 in PyDict_SetItem (op=0xb7fd61c4, key=0xb7ebb4a8,
value=0x8245f58) at ../Objects/dictobject.c:701
#18 0x08090c13 in _PyModule_Clear (m=0xb7fa411c) at
../Objects/moduleobject.c:138
#19 0x080ed7a5 in PyImport_Cleanup () at ../Python/import.c:444
#20 0x080fa0d5 in Py_Finalize () at ../Python/pythonrun.c:434
#21 0x080f9b7f in Py_Exit () at ../Python/pythonrun.c:1714
#22 handle_system_exit () at ../Python/pythonrun.c:1116
#23 0x080f9d6d in PyErr_PrintEx (set_sys_last_vars=1) at
../Python/pythonrun.c:1126
#24 0x080f9fa2 in PyErr_Print () at ../Python/pythonrun.c:1035
#25 0x080faacb in PyRun_SimpleFileExFlags (fp=0xbffffa8b, filename=0xbffffa8b
"/usr/share/apport/apport-kde", closeit=1, flags=0xbffff80c) at
../Python/pythonrun.c:935
#26 0x0805c898 in Py_Main (argc=3, argv=0xbffff8f4) at ../Modules/main.c:599
#27 0x0805baab in main (argc=3, argv=0xbffff8f4) at ../Modules/python.c:23
The behavior is the same with or without the KApplication.exit()
--
apport-kde crashed with SIGSEGV in QWidgetPrivate::deleteExtra()
https://bugs.launchpad.net/bugs/403361
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