From f2273c6a11af7ec80356ce824dabc7d04d96a1f5 Mon Sep 17 00:00:00 2001
From: Alexander Bruy <alexander.bruy@gmail.com>
Date: Tue, 23 Jan 2018 10:55:41 +0200
Subject: [PATCH] [raster calculator] don't crash if output file has illegal
 size, e.g. 0x0

---
 src/analysis/raster/qgsrastercalculator.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/analysis/raster/qgsrastercalculator.cpp b/src/analysis/raster/qgsrastercalculator.cpp
index 0a39137f033..4083d5757c0 100644
--- 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 );