[PyQt] Bug report: crash when using QSytemTrayIcon

[Kiwi]

Hi,
I'm totally new to PyQt programming.
While I was writing a very simple app for the system tray I think I found a bug.
Here is a simple testcase:

# -*- coding: utf-8 -*-
import sys
from PyQt4 import QtGui, QtCore

app = QtGui.QApplication(sys.argv)

tray = QtGui.QSystemTrayIcon()

def a(): pass
def b(): pass
def c(): pass
def d(): pass
def e(): pass
def f(): pass
def g(): pass
def h(): pass
def i(): pass
def j(): pass
def k(): pass

cm = QtGui.QMenu()
cm.addAction("Exit",QtGui.QApplication.quit)

tray.setContextMenu(cm)

tray.show()
sys.exit(app.exec_())


note that the "defs" are needed to make the crash happen.
FYI, running linux on x86_64
versions:
qt: 4.6.2
pyqt: 4 4.7
sip: 4.10
python: 2.6.4
gcc: 4.4.3
libX11 1.3.3

here is the backtrace:
(gdb) run
Starting program: /usr/bin/python2.6 crash.py
[Thread debugging using libthread_db enabled]
QSystemTrayIcon::setVisible: No Icon set

Program received signal SIGSEGV, Segmentation fault.
XFreeColormap (dpy=0x0, cmap=16777218) at FreeCmap.c:41
41      FreeCmap.c: No such file or directory.
        in FreeCmap.c
(gdb) bt
#0  XFreeColormap (dpy=0x0, cmap=16777218) at FreeCmap.c:41
#1  0x00007ffff5f1b558 in ~QSystemTrayIconSys (this=0x9c3070,
__in_chrg=<value optimized out>) at util/qsystemtrayicon_x11.cpp:213
#2  0x00007ffff5f19ff4 in QSystemTrayIconPrivate::remove_sys
(this=0x9bc310) at util/qsystemtrayicon_x11.cpp:352
#3  0x00007ffff5f0637f in ~QSystemTrayIcon (this=0x8c6590,
__in_chrg=<value optimized out>) at util/qsystemtrayicon.cpp:152
#4  0x00007ffff65f46f2 in ~sipQSystemTrayIcon (this=0x8c6590,
__in_chrg=<value optimized out>) at sipQtGuiQSystemTrayIcon.cpp:137
#5  0x00007ffff65f347c in release_QSystemTrayIcon (sipCppV=0x8c6590,
sipState=<value optimized out>) at sipQtGuiQSystemTrayIcon.cpp:752
#6  0x00007ffff219c289 in sipWrapper_dealloc (self=0x0) at siplib.c:9675
#7  0x00007ffff7adc0e5 in subtype_dealloc (self=0x7ffff7f1caf0) at
Objects/typeobject.c:1019
#8  0x00007ffff7aba0cf in insertdict (mp=0x63cf60, key=0x7ffff7f08870,
hash=2314047222216391292, value=0x7ffff7dab5d0) at
Objects/dictobject.c:459
#9  0x00007ffff7abcb15 in PyDict_SetItem (op=0x63cf60,
key=0x7ffff7f08870, value=0x7ffff7dab5d0) at Objects/dictobject.c:701
#10 0x00007ffff7abe48d in _PyModule_Clear (m=<value optimized out>) at
Objects/moduleobject.c:138
#11 0x00007ffff7b2ac4f in PyImport_Cleanup () at Python/import.c:439
#12 0x00007ffff7b33c46 in Py_Finalize () at Python/pythonrun.c:434
#13 0x00007ffff7b33d58 in Py_Exit (sts=0) at Python/pythonrun.c:1714
#14 0x00007ffff7b33e87 in handle_system_exit () at Python/pythonrun.c:1116
#15 0x00007ffff7b340cd in PyErr_PrintEx (set_sys_last_vars=1) at
Python/pythonrun.c:1126
#16 0x00007ffff7b345a6 in PyRun_SimpleFileExFlags (fp=0x7fffffffe578,
filename=0x7fffffffe578 "crash.py", closeit=1, flags=0x7fffffffe0d0)
at Python/pythonrun.c:935
#17 0x00007ffff7b40721 in Py_Main (argc=-134926176, argv=<value
optimized out>) at Modules/main.c:599
#18 0x00007ffff74ebbbd in __libc_start_main (main=<value optimized
out>, argc=<value optimized out>, ubp_av=<value optimized out>,
init=<value optimized out>,
    fini=<value optimized out>, rtld_fini=<value optimized out>,
stack_end=0x7fffffffe1e8) at libc-start.c:220
#19 0x00000000004006b
(gdb) f 6
#6  0x00007ffff219c289 in sipWrapper_dealloc (self=0x0) at siplib.c:9675
9675        forgetObject((sipSimpleWrapper *)self);
(gdb) f 5
#5  0x00007ffff65f347c in release_QSystemTrayIcon (sipCppV=0x8c6590,
sipState=<value optimized out>) at sipQtGuiQSystemTrayIcon.cpp:752
warning: Source file is more recent than executable.
752             delete reinterpret_cast<QSystemTrayIcon *>(sipCppV);
Current language:  auto
The current source language is "auto; currently c++".
(gdb) f 4
#4  0x00007ffff65f46f2 in ~sipQSystemTrayIcon (this=0x8c6590,
__in_chrg=<value optimized out>) at sipQtGuiQSystemTrayIcon.cpp:137
137     }