Bug report #5956
Crash when retrieving only null values for query
| Status: | Closed | ||
|---|---|---|---|
| Priority: | High | ||
| Assignee: | - | ||
| Category: | - | ||
| Affected QGIS version: | master | Regression?: | No |
| Operating System: | Easy fix?: | No | |
| Pull Request or Patch supplied: | No | Resolution: | upstream |
| Crashes QGIS or corrupts data: | Yes | Copied to github as #: | 15378 |
Description
Easy to reproduce:
- Create a new shapefile, with a few features and at least one attribute than contains only NULL values.
- Start a query on the layer and retrieve the possible values for this attribute.
- QGis crashes
Maybe it is an OGR problem?
Backtrace:
#0 0xb62e75e6 in swq_select_summarize(swq_select*, int, char const*) ()
from /usr/lib/libgdal.so
#1 0xb61994b0 in OGRGenSQLResultsLayer::PrepareSummary() ()
from /usr/lib/libgdal.so
#2 0xb619b40e in OGRGenSQLResultsLayer::GetFeature(long) ()
from /usr/lib/libgdal.so
#3 0xb619b54f in OGRGenSQLResultsLayer::GetNextFeature() ()
from /usr/lib/libgdal.so
#4 0xb62199ef in OGR_L_GetNextFeature () from /usr/lib/libgdal.so
#5 0xadbc8c22 in QgsOgrProvider::uniqueValues (this=0x895c528, index=0, uniqueValues=..., limit=-1)
at /home/koxinga/programmation/qgis/Quantum-GIS/src/providers/ogr/qgsogrprovider.cpp:2216
#6 0xb5aef64c in QgsVectorLayer::uniqueValues (this=0x9f69e80, index=0, uniqueValues=..., limit=-1)
at /home/koxinga/programmation/qgis/Quantum-GIS/src/core/qgsvectorlayer.cpp:5230
Related issues
History
#1
Updated by Giovanni Manghi over 12 years ago
- Status changed from Open to Feedback
I cannot replicate. How do you do the query? can you attach sample data?
#2
Updated by Jürgen Fischer over 12 years ago
Maybe it is an OGR problem?
Yes, maybe. Which GDAL version are you using?
#3
Updated by Leyan Ouyang over 12 years ago
I was using Archlinux, gdal 1.9.0, released 2011/12/29
I just updated to gdal 1.9.1 and the crash disappeared.
To do the query, I simply right click on the layer and "Query..." and retrieve the values of the attribute.
#4
Updated by Jürgen Fischer over 12 years ago
- Resolution set to upstream
- Status changed from Feedback to Closed
Leyan Ouyang wrote:
I was using Archlinux, gdal 1.9.0, released 2011/12/29
I just updated to gdal 1.9.1 and the crash disappeared.
To do the query, I simply right click on the layer and "Query..." and retrieve the values of the attribute.
So probably a fixed upstream problem in GDAL 1.9.0.