Bug report #17155
Crash when creating XYZ layer from python
| Status: | Closed | ||
|---|---|---|---|
| Priority: | Normal | ||
| Assignee: |  Alessandro Pasotti | ||
| Category: | Data Provider | ||
| Affected QGIS version: | master | Regression?: | No |
| Operating System: | Linux Ubuntu | Easy fix?: | No |
| Pull Request or Patch supplied: | Yes | Resolution: | |
| Crashes QGIS or corrupts data: | Yes | Copied to github as #: | 25054 |
Description
Try something like
l = QgsVectorLayer("crs=EPSG:3857&format&type=xyz&url=http://b.tile.openstreetmap.org/{z}/{x}/{y}.png&zmax=18&zmin=0", "wms", "wms")
It kabooms in QgsVectorLayer::setDataProvider, when calling updateFields()
Observed with qgis 2.18 and 2.99
Adding this XYZ layer works fine with the browser
Associated revisions
[bugfix] Prevent a bad crash when provider is wrong
Fixes #17155
History
#1
Updated by Nyall Dawson about 7 years ago
- Status changed from Open to Feedback
Shouldn't that be QgsRasterLayer?
#2
Updated by Hugo Mercier about 7 years ago
- Resolution set to invalid
Of course it is ... !
Works correctly with a QgsRasterLayer, thanks. I did not get enough coffee this morning apparently ... :/
What is a bit confusing is that it does not immediately return and says the provider is unknown. I guess this is because "wms" is also a raster provider.
#3
Updated by Alessandro Pasotti about 7 years ago
- Assignee set to Alessandro Pasotti
#4
Updated by Alessandro Pasotti about 7 years ago
- Pull Request or Patch supplied changed from No to Yes
- Resolution deleted (
invalid)
Not fixable due to this cast: https://github.com/qgis/QGIS/blob/master/src/core/qgsvectorlayer.cpp#L1538
I don't know the reason why the dynamic cast was removed, but maybe time to re-introduce it
See: https://github.com/qgis/QGIS/pull/5552
#5 Updated by Anonymous about 7 years ago
- % Done changed from 0 to 100
- Status changed from Feedback to Closed
Applied in changeset qgis|2523d7351cf166b15941edd707586951a30ed54b.