ported fix for #1605 from trunk

wonder · wonder · commit a9b5429b3511 · 2009-03-31T19:31:25.000Z
git-svn-id: http://svn.osgeo.org/qgis/branches/Version-1_0@10449 c8812cc2-4d05-0410-92ff-de0c093fc19c
diff --git a/src/core/qgsgeometry.cpp b/src/core/qgsgeometry.cpp
@@ -310,6 +310,9 @@ static GEOSGeometry *createGeosLineString( const QgsPolyline& polyline )
 static GEOSGeometry *createGeosLinearRing( const QgsPolyline& polyline )
 {
   GEOSCoordSequence *coord = 0;
+  
+  if (polyline.count() == 0)
+    return 0;
 
   try
   {

Original file line number	Diff line number	Diff line change
`@@ -310,6 +310,9 @@ static GEOSGeometry *createGeosLineString( const QgsPolyline& polyline )`
`310`	`310`	`static GEOSGeometry *createGeosLinearRing( const QgsPolyline& polyline )`
`311`	`311`	`{`
`312`	`312`	`GEOSCoordSequence *coord = 0;`
	`313`	`+`
	`314`	`+ if (polyline.count() == 0)`
	`315`	`+ return 0;`
`313`	`316`
`314`	`317`	`try`
`315`	`318`	`{`