Hi Phil,
I managed to reduce another small crashing testcase:
==========================================
#!/usr/bin/env python
from qt import *
import weakref
class myref(weakref.ref):
pass
a = QObject(None)
wr = myref(a)
wr._callback = lambda: wr
QObject.connect(a, SIGNAL("destroyed()"), wr._callback)
del a
print "OK!"
==========================================
Purify gives me this output:
[W] UMR: Uninitialized memory read in sip_api_emit_to_slot {1 occurrence}
Reading 4 bytes from 0x0276aec0 (4 bytes at 0x0276aec0 uninitialized)
Address 0x0276aec0 is 72 bytes into a 80 byte block at 0x0276ae78
Address 0x0276aec0 points to a C++ new block in heap 0x02640000
Thread ID: 0x7bc
Error location
sip_api_emit_to_slot [sip\siplib\qtlib.c:614]
return 0;
}
=> if ((sfunc = PyMethod_New(slot->meth.mfunc, self,
slot->meth.mclass)) == NULL)
{
Py_XDECREF(sref);
return -1;
UniversalSlot::qt_invoke(int,QUObject *) [pyqt\sip\qt\qobject.sip:1202]
}
// Dispatch to the real slot.
=> if (ok && sipEmitToSlot(&conn.sc_slot, argtup) < 0)
ok = FALSE;
Py_DECREF(argtup);
QObject::activate_signal(QConnectionList *,QUObject *) [qt.pyd]
QObject::activate_signal(int) [qt.pyd]
QObject::destroyed(void) [qt.pyd]
sipQObject::~sipQObject(void) [qt.pyd]
sipQObject::`scalar deleting destructor'(UINT) [qt.pyd]
release_QObject [qt.pyd]
dealloc_QObject [qt.pyd]
sipWrapper_dealloc [sip\siplib\siplib.c:6379]
subtype_dealloc [d:\python-2.4.2\objects\typeobject.c:703]
PyDict_DelItem [d:\python-2.4.2\objects\dictobject.c:601]
dict_ass_sub [d:\python-2.4.2\objects\dictobject.c:893]
PyObject_DelItem [d:\python-2.4.2\objects\abstract.c:155]
PyEval_EvalFrame [d:\python-2.4.2\python\ceval.c:1715]
Allocation location
[C:\Python24\MSVCR71.dll ip=0x5C367F07]
sipQtCreateUniversalSlot [pyqt\sip\qt\qobject.sip:1250]
if (tx && PyObject_TypeCheck(tx, (PyTypeObject *)sipClass_QObject))
qtx = reinterpret_cast<QObject *>(conn->sc_transmitter);
=> return new UniversalSlot(qtx, conn, member);
}
createUniversalSlot [sip\siplib\qtlib.c:447]
return 0;
/* Parse the signature and create the universal slot. */
=> if ((conn.sc_signature = parseSignature(sig)) == NULL ||
(us = sipQtSupport->qt_create_universal_slot(txSelf, &conn, member)) ==
NULL)
{
sip_api_free_connection(&conn);
return 0;
sip_api_convert_rx [sip\siplib\qtlib.c:916]
const char *slot,const char **memberp)
{
if (slot == NULL)
=> return createUniversalSlot(txSelf, sig, rxObj, NULL,
memberp);
if (isQtSlot(slot) || isQtSignal(slot))
{
sip_api_connect_rx [sip\siplib\qtlib.c:962]
meth_QObject_connect [pyqt\qt\qobject.sip:603]
PyCFunction_Call [d:\python-2.4.2\objects\methodobject.c:73]
call_function [d:\python-2.4.2\python\ceval.c:3558]
PyEval_EvalFrame [d:\python-2.4.2\python\ceval.c:2163]
PyEval_EvalCodeEx [d:\python-2.4.2\python\ceval.c:2736]
Hope this helps!
--
Giovanni Bajo
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