Hi! I was trying to visualize a linestring using the QgsGeometryRubberBand and had QGIS crashing as soon as the rubber band was being drawn. It looks like the geometry is being corrupted somewhere.
If I draw a polygon it works fine: from qgis.core import * from qgis.gui import * rb = QgsGeometryRubberBand(iface.mapCanvas(), QGis.Polygon) g = QgsGeometry.fromWkt('POLYGON((0 0, 0 1, 1 1, 1 0, 0 0))') rb.setGeometry(g.geometry().clone()) If I draw a line instead QGIS crashes: from qgis.core import * from qgis.gui import * rb = QgsGeometryRubberBand(iface.mapCanvas(), QGis.Line) g = QgsGeometry.fromWkt('LINESTRING(0 0, 1 1)') rb.setGeometry(g.geometry().clone()) The crash happens at: https://github.com/qgis/QGIS/blob/release-2_18/src/gui/qgsgeometryrubberband.cpp#L57 QgsAbstractGeometryV2* paintGeom = mGeometry->clone(); Is it a difference in the deep copy/clone mechanism that fails somehow, since I guess that the problem arises in the cloning of the abstract geometry in my two samples and not in line 57 of qgsgeometryrubberband.cpp? Regards, Casper
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