[PyQt] OSX segfault emitting signal with dict argument

[Jugdish]

I've tested the following bit of code under these 2 setups:

1. Mac OSX 10.6.2 Intel
   Python 2.6.5
   Qt 4.6.2
   PyQt 4.7.2

2. GNU/Linux x64 Fedora 8
   Python 2.6.2
   Qt 4.6.2
   PyQt 4.7

The code runs fine on the Linux setup, but results in a segfault on OSX.
Interestingly, if I declare the signal as pyqtSignal(object) rather than
pyqtSignal(dict), the segfault doesn't happen. Also, if I change the
dictionary's key from an integer to a string, the segfault goes away.

#######################################
from PyQt4 import QtCore

class A(QtCore.QObject):
    foo = QtCore.pyqtSignal(dict)

class B(QtCore.QObject):
    def doStuff(self, obj):
        print "got object", obj

a = A()
b = B()
a.foo.connect(b.doStuff)
a.foo.emit({0: "value"})
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