[Qgis-developer] Segmentation fault when using layersRemoved SIGNAL.

[René-Luc Dhont]

Thanks to open the issue.

We encountered the same behavoir on QGIS Server.

The crash is due to `QgsEditorWidgetRegistry::mapLayerWillBeRemoved` 
when the cast is done `QgsVectorLayer* vl = 
qobject_cast<QgsVectorLayer*>( mapLayer );` QGIS crashed.

Some one to fix it ?

Le 20/06/2016 17:54, Germán Carrillo a écrit :
> For reference, this is the ticket I've just opened: 
> http://hub.qgis.org/issues/15088
>
> Regards,
>
> Germán
>
> 2016-06-18 5:56 GMT-05:00 René-Luc Dhont <rldhont at gmail.com 
> <mailto:rldhont at gmail.com>>:
>
>     Open a ticket with your code example.
>
>     Regards,
>
>
>     Le 18/06/2016 00:28, Germán Carrillo a écrit :
>>     Should I open a ticket reporting this issue to the QGIS issue
>>     tracker?
>>
>>     Regards,
>>
>>     Germán
>>
>>     2016-06-13 15:53 GMT-05:00 Germán Carrillo
>>     <carrillo.german at gmail.com <mailto:carrillo.german at gmail.com>>:
>>
>>         Hi All,
>>
>>         there seems to be an issue connecting the SIGNAL
>>         layersRemoved from QgsMapLayerRegistry.
>>
>>         For example, if I save this script to a file, and run it from
>>         the Linux terminal:
>>
>>         ################################################
>>         import unittest
>>         from qgis.core import QgsApplication, QgsMapLayerRegistry
>>
>>         class SIGNALTest( unittest.TestCase ):
>>
>>             def setUp( self ):
>>                 app = QgsApplication([], True)
>>         QgsApplication.setPrefixPath("/usr", True)
>>                 QgsApplication.initQgis()
>>         QgsMapLayerRegistry.instance().layersRemoved.connect(
>>         self.myFunction )
>>             def myFunction( self, layerIds ):
>>                 print "Called!"
>>             def test1( self ):
>>                 self.assertEqual(1,1)
>>
>>             def tearDown( self ):
>>                 QgsApplication.exitQgis()
>>         if __name__ == "__main__":
>>             unittest.main()
>>         ################################################
>>
>>         I get the following result:
>>
>>         ##########
>>         Called!
>>         .
>>         ----------------------------------------------------------------------
>>         Ran 1 test in 0.119s
>>
>>         OK
>>         Segmentation fault
>>         ###########
>>
>>         If, on the contrary, I comment out the line where the
>>         connection is set or if I use other signals such as
>>         layerRemoved or layersAdded instead of layersRemoved, I get:
>>
>>         ###########
>>         .
>>         ----------------------------------------------------------------------
>>         Ran 1 test in 0.111s
>>
>>         OK
>>         ###########
>>
>>         I'm using QGIS 2.14.2 on a GNU/Linux machine.
>>
>>         Can you confirm such problem? Do you have any clue about it?
>>
>>
>>         Regards,
>>
>>         Germán
>>
>>         -- 
>>         -----------
>>            |\__
>>         (:>__)(
>>            |/
>>         Soluciones Geoinformáticas Libres
>>         http://geotux.tuxfamily.org/
>>         http://twitter.com/GeoTux2
>>         http://about.me/germancarrillo
>>
>>         <http://gis.stackexchange.com/users/4972/germ%c3%a1n-carrillo>
>>
>>
>>
>>
>>     -- 
>>     -----------
>>        |\__
>>     (:>__)(
>>        |/
>>     Soluciones Geoinformáticas Libres
>>     http://geotux.tuxfamily.org/
>>     http://twitter.com/GeoTux2
>>     http://about.me/germancarrillo
>>
>>     <http://gis.stackexchange.com/users/4972/germ%c3%a1n-carrillo>
>>
>>
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>
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