[raster calculator] don't crash if output file has illegal size, e.g. 0x0

alexbruy · alexbruy · commit f2273c6a11af · 2018-01-23T10:55:41.000+02:00
diff --git a/src/analysis/raster/qgsrastercalculator.cpp b/src/analysis/raster/qgsrastercalculator.cpp
@@ -112,6 +112,11 @@ int QgsRasterCalculator::processCalculation( QgsFeedback *feedback )
   }
 
   gdal::dataset_unique_ptr outputDataset( openOutputFile( outputDriver ) );
+  if ( !outputDataset )
+  {
+    return static_cast< int >( CreateOutputError );
+  }
+
   GDALSetProjection( outputDataset.get(), mOutputCrs.toWkt().toLocal8Bit().data() );
   GDALRasterBandH outputRasterBand = GDALGetRasterBand( outputDataset.get(), 1 );
 
