From df49f1bc1bfa4495ddb5a94968ce036693d259a6 Mon Sep 17 00:00:00 2001
From: hlg <public.void@gmx.de>
Date: Thu, 14 Feb 2019 03:16:03 +0800
Subject: [PATCH] prevent index out of bound in case of a single point

---
 src/ifcgeom/IfcGeomWires.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/ifcgeom/IfcGeomWires.cpp b/src/ifcgeom/IfcGeomWires.cpp
index 7c1a93a7f0..46e9e72117 100644
--- a/src/ifcgeom/IfcGeomWires.cpp
+++ b/src/ifcgeom/IfcGeomWires.cpp
@@ -912,7 +912,7 @@ bool IfcGeom::Kernel::convert(const IfcSchema::IfcIndexedPolyCurve* l, TopoDS_Wi
 				throw IfcParse::IfcException("Unexpected IfcIndexedPolyCurve segment of type " + IfcSchema::Type::ToString(segment->type()));
 			}
 		}
-	} else {
+	} else if (points.begin() < points.end()) {
                 std::vector<gp_Pnt>::const_iterator previous = points.begin();
                 for (std::vector<gp_Pnt>::const_iterator current = previous+1; current < points.end(); ++current){
                         w.Add(BRepBuilderAPI_MakeEdge(*previous, *current));