[Qgis-developer] Qgis crash after transforming invalid coordinates

Martin Dobias wonder.sk at gmail.com
Sat Apr 9 12:48:01 EDT 2011

On Tue, Apr 5, 2011 at 8:33 AM, Goo Creations <goocreations at gmail.com> wrote:
> Hi all
> I'm doing the following to transform coordinates:
> ct = QgsCoordinateTransform()
> ct.setSourceCrs(sourceCRS)
> ct.setDestCRS(destinationCRS)
> point1 = ct.transform(aPoint)
> Everything works fine, until the users enters coordinates that are invalid
> for the source CRS. Qgis crashes with the following errors:
> qgscoordinatetransform.cpp: 485: (transformCoords) Projection failed
> emitting invalid transform signal: forward transform of (44038.4, -33923.3)
> failed with error: latitude or longitude exceeded limits
> qgscoordinatetransform.cpp: 489: (transformCoords) throwing exception
> qgscoordinatetransform.cpp: 226: (transform) rethrowing exception
> terminate called after throwing an instance of 'QgsCsException'
> Aborted
> I've tried to catch QgsCsException, but qgscoordinatetransform still
> terminates Qgis before the exception can be caught.
> I've also tried connecting the invalidTransformInput() signal, which
> successfully executes (but Qgis is still terminated afterwards).

Unfortunately as of now there is no exception handling in the python
bindings (coordinate transform is probably the only one exception used
in public api). Please file a bug for this issue, we should have a
look at it (if possible provide also the definitions of of
source/destination CRS of easier replication of the error).


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