rduivenvoorde
commented
8 years ago History from Redmine
Rauni Lillemets 06/30/2014 02:17 am
File qgis-20140630-120940-6060-5464-8fdd08a.zip added qgis-20140630-120940-6060-5464-8fdd08a.zip
Matthias Kuhn, m-kuhn
Crashes here only in the following order:
rasterLayer = iface.addRasterLayer("crs=EPSG:4326&dpiMode=7&featureCount=10&format=image/png&layers=natura2000&styles=&url=http://geodata.nationaalgeoregister.nl/natura2000/ows", "wms master example", "wms" )
vectorLayer = iface.addVectorLayer("http://geodata.nationaalgeoregister.nl/bestuurlijkegrenzen/wfs?SERVICE=WFS&VERSION=1.0.0&REQUEST=GetFeature&TYPENAME=bestuurlijkegrenzen:provincies&SRSNAME=EPSG:28992","wfs example","WFS")
QgsMapLayerRegistry.instance().removeMapLayer(vectorLayer.id())
QgsMapLayerRegistry.instance().addMapLayer(vectorLayer) #if this line is commented out, a crash occurs.
QgsMapLayerRegistry.instance().removeMapLayer(vectorLayer.id())Giovanni Manghi
Category set to PyQGIS Console (mapped to label: 5 CAT: PyQGIS) Priority changed from Normal to High (mapped to label: 3 PRIO: High) Causes crash or corruption changed from No to Yes (mapped to label: 3 PRIO: Severe/Regression)
Jürgen Fischer
Matthias Kuhn wrote:
Crashes here only in the following order:
[...]
More detailed:
- @QgsMapLayerRegistry.addMapLayer@ transfers ownership of the layer
- @QgsMapLayerRegistry.removeMapLayer@ in turn destructs the layer
- The python object @vectorLayer@ doesn't notice and hence the call to @vectorLayer.id()@ crashes (before @removeMapLayer@ is even called a second time)
So that's a flaw in the API and a duplicate of #777.
But @crash.py@ doesn't use the layer after it has been removed and doesn't crash here on master.
Status changed from Open to Feedback
Jürgen Fischer
Subject changed from Python Console crashes when removing non-existant vector layer to Python Console crashes when removing non-existent vector layer
Giovanni Manghi
Should we close this as duplicate?
Jürgen Fischer
Status changed from Feedback to Closed
Imported from Redmine: http://hub.qgis.org/issues/10755 Originally created on Mon Jun 30 02:16:22 -0700 2014, last update on Sat Nov 07 06:02:05 -0800 2015 Author: @rduivenvoorde rduivenvoorde@foo.bar (Q: should we show email?, Q: should we create @ mention?)
Description
When I try to run the following code (included in attachment crash.py) from Python Console, the QGis crashes by saying:
minidump written to C:\Users\rauni\AppData\Local\Temp\qgis-20140630-120940-6060-5464-8fdd08a.dmp (see attached minidump)
However, if I run the code (included in attachment no_crash.py), then no error occurs.
Code is following:
I am using the versions: QGIS versioon 2.4.0-Chugiak QGIS koodi revisjon 8fdd08a Kompileeritud Qt-le 4.8.5 Töötab Qt-s 4.8.5 Kompileeritud GDAL/OGR-le 1.11.0 Töötab GDAL/OGR-s 1.11.0 Compiled against GEOS 3.4.2-CAPI-1.8.2 Running against GEOS 3.4.2-CAPI-1.8.2 r3921 PostgreSQL kliendi versioon 9.2.4 SpatiaLite versioon 4.1.1 QWT versioon 5.2.3 PROJ.4 Versioon 480 QScintilla2 Version 2.7.2
I am using Windows 7, if it matters.
Attachments
crash.py - crash file. Rauni Lillemets, 06/30/2014 02:16 am crash.py.zip
no_crash.py - no crash occurs. Rauni Lillemets, 06/30/2014 02:16 am no_crash.py.zip
Related
Issue #17