From 25755de65e7ae6023cd9629aab3066389a55762e Mon Sep 17 00:00:00 2001
From: wmayer <wmayer@e8eeb9e2-ec13-0410-a4a9-efa5cf37419d>
Date: Mon, 28 Nov 2011 14:44:34 +0000
Subject: [PATCH] 0000497: FreeCAD crashes when calling Part.makeFilledFace
 with list of lines

git-svn-id: https://free-cad.svn.sourceforge.net/svnroot/free-cad/trunk@5197 e8eeb9e2-ec13-0410-a4a9-efa5cf37419d
---
 src/Mod/Part/App/AppPartPy.cpp | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/Mod/Part/App/AppPartPy.cpp b/src/Mod/Part/App/AppPartPy.cpp
index 69948f597..763f6da53 100644
--- a/src/Mod/Part/App/AppPartPy.cpp
+++ b/src/Mod/Part/App/AppPartPy.cpp
@@ -358,15 +358,23 @@ static PyObject * makeFilledFace(PyObject *self, PyObject *args)
         
         try {
             Py::List list(obj);
+            int countEdges = 0;
             for (Py::List::iterator it = list.begin(); it != list.end(); ++it) {
                 if (PyObject_TypeCheck((*it).ptr(), &(Part::TopoShapeEdgePy::Type))) {
                     const TopoDS_Shape& sh = static_cast<TopoShapeEdgePy*>((*it).ptr())->
                         getTopoShapePtr()->_Shape;
-                    if (!sh.IsNull())
+                    if (!sh.IsNull()) {
                         builder.Add(TopoDS::Edge(sh), GeomAbs_C0);
+                        countEdges++;
+                    }
                 }
             }
 
+            if (countEdges == 0) {
+                PyErr_SetString(PyExc_Exception, "Failed to created face with no edges");
+                return 0;
+            }
+
             builder.Build();
             if (builder.IsDone()) {
                 return new TopoShapeFacePy(new TopoShape(builder.Face()));