From 596e13b24c3cfc7448d7cd9fc0078bf3d77b1256 Mon Sep 17 00:00:00 2001
From: Thomas Krijnen <t.krijnen@gmail.com>
Date: Fri, 27 Sep 2019 15:12:35 +0200
Subject: [PATCH] Add null check on trimmed curve

---
 src/ifcgeom/IfcGeomWires.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/ifcgeom/IfcGeomWires.cpp b/src/ifcgeom/IfcGeomWires.cpp
index 64778fc9f9..5f929d55ba 100644
--- a/src/ifcgeom/IfcGeomWires.cpp
+++ b/src/ifcgeom/IfcGeomWires.cpp
@@ -559,6 +559,10 @@ bool IfcGeom::Kernel::convert(const IfcSchema::IfcTrimmedCurve* l, TopoDS_Wire&
 		e = BRepBuilderAPI_MakeEdge(pnts[0], pnts[1]).Edge();
 	}
 
+	if (e.IsNull()) {
+		return false;
+	}
+
 	if (isConic) {
 		// Tiny circle segnments can cause issues later on, for example
 		// when the comp curve is used as the sweeping directrix.