From 26bd03e4073b52b570ab77f13c58c96206df287c Mon Sep 17 00:00:00 2001
From: Ken Arroyo Ohori <g.a.k.arroyoohori@tudelft.nl>
Date: Mon, 10 Apr 2017 18:53:52 -0500
Subject: [PATCH] Ditto

---
 src/ifcgeom/kernels/cgal/CgalConversionFunctions.cpp | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/src/ifcgeom/kernels/cgal/CgalConversionFunctions.cpp b/src/ifcgeom/kernels/cgal/CgalConversionFunctions.cpp
index 69003d9aa1..c01c6e8576 100644
--- a/src/ifcgeom/kernels/cgal/CgalConversionFunctions.cpp
+++ b/src/ifcgeom/kernels/cgal/CgalConversionFunctions.cpp
@@ -45,9 +45,14 @@ CGAL::Polyhedron_3<Kernel> IfcGeom::CgalKernel::create_polyhedron(std::list<cgal
 
 CGAL::Polyhedron_3<Kernel> IfcGeom::CgalKernel::create_polyhedron(CGAL::Nef_polyhedron_3<Kernel> &nef_polyhedron) {
   if (nef_polyhedron.is_simple()) {
-    CGAL::Polyhedron_3<Kernel> polyhedron;
-    nef_polyhedron.convert_to_polyhedron(polyhedron);
-    return polyhedron;
+    try {
+      CGAL::Polyhedron_3<Kernel> polyhedron;
+      nef_polyhedron.convert_to_polyhedron(polyhedron);
+      return polyhedron;
+    } catch (...) {
+      std::cout << "Conversion from Nef to polyhedron failed!" << std::endl;
+      return CGAL::Polyhedron_3<Kernel>();
+    }
   } else {
     std::cout << "Nef polyhedron not simple: cannot create polyhedron!" << std::endl;
     return CGAL::Polyhedron_3<Kernel>();