[Qgis-developer] 2.2 project keeps crashing after load

[Andreas Neumann]

Hi Martin,

It is quite hard to find out what is really causing the issue.

I had Jürgen visiting my machine with Teamviewer but he did not see
anything obvious. We had quite a few crashes but not a good idea what
may be causing it.

The interesting thing is that it only happened with certain data
formats. The crashes appeared with Postgis datasource and SpatiaLite
datasource, but not with ESRI shapefiles.

The crashes do not appear always. Maybe 1 out of 3 or 4. They appear
more often after a fresh start of QGIS.

I am afraid I cannot produce an easy to reproduce test-case.

Andreas

Am 27.06.2014 08:22, schrieb Martin Dobias:
> Hi Andreas
> 
> I am trying it on my computer, but without any results - I am unable
> to get the crash.
> 
> So it does crash only with labeling turned on?
> 
> Can be the crashing project reduced to just one map layer and still crash?
> 
> My theory right now is that there will be some unhandled exceptions in
> the rendering code which will trigger those QPixmap warnings when
> QgsApplication::notify will try to show a QMessageBox in worker
> thread.
> 
> Even it that is true, the question still is why those exceptions get raised...
> 
> Regards
> Martin
> 
> 
> 
> On Wed, Jun 25, 2014 at 10:17 PM, Andreas Neumann <a.neumann at carto.net> wrote:
>> Thanks for trying.
>>
>> I just had Jürgen with Teamviewer at my machine and it is quite hard to
>> find out what causes the crashes.
>>
>> It does not crash at every load. Maybe every third or fourth time in
>> average. Turning multit-threading off improves the situation a lot -
>> there are few to none crashes if multi-threading is off.
>>
>> When I have layers with free or horizontal polygon labeling on it
>> crashes more often. So the labeling may trigger the crashes more often
>> but may not be the cause of the crash.
>>
>> I'll keep testing ...
>>
>> Andreas
>>
>> Am 25.06.2014 14:29, schrieb Saber Razmjooei:
>>> For me for the first time, when I double-clicked on the project (qgs file)
>>> it opens qgis and immediately crashed (windows 7 64 bit OSGEO latest
>>> nightly). I then open the project from within QGIS, it worked fine. And
>>> double-clicking on the project also worked subsequently.
>>>
>>> Cheers,
>>> Saber
>>>
>>>
>>> -----Original Message-----
>>> From: qgis-developer-bounces at lists.osgeo.org
>>> [mailto:qgis-developer-bounces at lists.osgeo.org] On Behalf Of Jürgen E.
>>> Fischer
>>> Sent: 25 June 2014 15:21
>>> To: qgis-developer at lists.osgeo.org
>>> Subject: Re: [Qgis-developer] 2.2 project keeps crashing after load
>>>
>>> Hi Andreas,
>>>
>>> On Wed, 25. Jun 2014 at 13:25:07 +0000, Andreas Neumann wrote:
>>>> I can only reproduce the issue on Windows (Win7 64bit). It does not
>>>> appear on Linux 64bit. Also on Windows it does not happen always, but
>>> often.
>>> [...]
>>>> My project is here to download with SpatiaLite 4 as a datasource:
>>>> http://webgis.uster.ch/temp/qgis_crashing_project.zip
>>>
>>> Hm, anything special to do?   I tried to zoom and pan - works fine for me.
>>>
>>>
>>>
>>> Jürgen
>>>
>>
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