Segmentation fault when using layersRemoved SIGNAL

[qgib]

Author Name: gcarrillo - (gcarrillo -)
Original Redmine Issue: 15088
Affected QGIS version: 2.14.2
Redmine category:vectors

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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.

[qgib]

Author Name: René-Luc ReLuc (@rldhont)

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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.

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• fixed_version_id was changed from Future Release - Lower Priority to Version 2.14
• priority_id was changed from Normal to Severe/Regression
• category_id was changed from Python plugins to Vectors

[qgib]

Author Name: Anónimo (Anónimo)

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Fixed in changeset "4b0df5bc5b71523ad35db050c57ca3c04c2b6d1e".

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• status_id was changed from Open to Closed