[Kde-pim] Re: Frequent crashes in EntityTreeModel and other library models

[Stephen Kelly]

Stephen Kelly wrote:

> David Jarvie wrote:
> 
>> When built to use Akonadi, KAlarm very frequently crashes during its
>> startup. Most of the crashes, which are individually non-reproducible,
>> occur during initialisation of the Akonadi models, including
>> EntityTreeModel. The majority of times, no crash dialog is displayed, so
>> I can't investigate those crashes. Some crashes also occur when events
>> are added or removed subsequently.
>> 
>> I'm quite concerned that unless things improve a lot, the Akonadi version
>> of KAlarm in 4.6 will be quite unstable. I've fixed various bugs in the
>> KAlarm code itself, but most of the remaining crashes for which I have
>> traces, like the attached one, occur at a low level inside the Akonadi
>> models or kdeui models. As a result, they aren't easy to debug, and
>> suggest that the fault probably lies in the library classes rather than
>> in the application.
>> 
>> I'd like to help fix these crashes, if somebody could tell me what else I
>> can do to track them down.
>> 
>> I attach a trace from the latest crash in KSelectionProxyModel /
>> EntityTreeModel.
>> 
> 
> I tried KAlarm today and after adding a single collection and a single
> item I get a crash on start up in the TemplateListModel.
> 
> I don't know my way around the code, and there are a lot of singletons,
> which makes it hard to know where the class is actually instantiated for
> the first time. That makes it hard to make a minimal test case.
> 
> If you can find a way to make minimal test cases the bugs can be fixed,
> but the current KAlarm code seems very tied together to me at the moment.

Actually the crash I'm getting is a bug in Qt regarding the column filtering 
that the TemplateListModel does.

I have a unit test for it now at least.

Steve.
 
> 
> All the best,
> 
> Steve.
> 
> 
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