[PyQt] Next Releases of PyQt and SIP

Giovanni Bajo rasky at develer.com
Fri Oct 16 18:42:20 BST 2009

On 10/16/2009 3:38 PM, Phil Thompson wrote:
> On Fri, 16 Oct 2009 15:31:08 +0200, Giovanni Bajo <rasky at develer.com>
> wrote:
>> On 10/16/2009 10:10 AM, Phil Thompson wrote:
>>> All outstanding bug reports against PyQt and SIP have been resolved - if
>>> you disagree then let me know.
>>> I plan to release PyQt v4.6.1 and SIP v4.9.1 early next week.
>>> BTW, the current PyQt snapshot will build against Qt v4.6-beta1.
>> Hi Phil,
>> I got some GC-related random crashes in a testsuite run after you fixed 
>> the QApplication destruction. I investigated them enough to see that 
>> it's related to invokation of focusPolicy() or other focus-related 
>> virtual methods on an already-deleted object, but they are hard to track 
>> down and I am not sure whenever I will have a reproduction recipe ready.
>> Is there anything specific to focus stuff that rings a bell to you?
> No. The obvious source of the problem is the QApplication being deleted too
> soon in relation to some other object.

I delete all top-level widgets, flush all the events 
(qApp.processEvents()), and run an explicit gc.collect() pass. I 
actually don't know what else to do...

I start to believe that it's a Qt problem rather than a PyQt's one; eg: 
some globals somewhere in the focus code that is not reset by 
QApplication's destructor and still points to some destroyed object.

I'll have a further look.
Giovanni Bajo
Develer S.r.l.

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