Fix crash if raster width is below 1 pixels (ticket #2846)

mhugent · mhugent · commit 00559279c045 · 2010-07-05T12:44:25.000Z
git-svn-id: http://svn.osgeo.org/qgis/trunk/qgis@13889 c8812cc2-4d05-0410-92ff-de0c093fc19c
diff --git a/src/core/raster/qgsrasterlayer.cpp b/src/core/raster/qgsrasterlayer.cpp
@@ -5701,7 +5701,7 @@ bool QgsRasterImageBuffer::createNextPartImage()
       ySize = fabs((( rasterYSize ) / mMapToPixel->mapUnitsPerPixel() * mGeoTransform[5] ) ) + 0.5;
     }
   }
-  if ( ySize == 0 )
+  if ( ySize < 1 || xSize < 1 )
   {
     return false;
   }

Original file line number	Diff line number	Diff line change
`@@ -5701,7 +5701,7 @@ bool QgsRasterImageBuffer::createNextPartImage()`
`5701`	`5701`	`ySize = fabs((( rasterYSize ) / mMapToPixel->mapUnitsPerPixel() * mGeoTransform[5] ) ) + 0.5;`
`5702`	`5702`	`}`
`5703`	`5703`	`}`
`5704`		`- if ( ySize == 0 )`
	`5704`	`+ if ( ySize < 1 \|\| xSize < 1 )`
`5705`	`5705`	`{`
`5706`	`5706`	`return false;`
`5707`	`5707`	`}`