From e65d641a970428a6bd8d7a648eba868efdf67bb2 Mon Sep 17 00:00:00 2001
From: AMA <>
Date: Fri, 10 Feb 2012 10:09:30 +0000
Subject: [PATCH] 0022805: Bug of STEP read /writer

---
 src/StepToTopoDS/StepToTopoDS_TranslateEdgeLoop.cxx | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/StepToTopoDS/StepToTopoDS_TranslateEdgeLoop.cxx b/src/StepToTopoDS/StepToTopoDS_TranslateEdgeLoop.cxx
index 7ef696e3d6..4296a073bf 100755
--- a/src/StepToTopoDS/StepToTopoDS_TranslateEdgeLoop.cxx
+++ b/src/StepToTopoDS/StepToTopoDS_TranslateEdgeLoop.cxx
@@ -670,7 +670,9 @@ void StepToTopoDS_TranslateEdgeLoop::Init(const Handle(StepShape_FaceBound)& Fac
       myEdgePro->Init (Face, edge);
       myEdgePro->Compute(preci);
       if (myEdgePro->IsFirstDone() && myEdgePro->IsLastDone()) {
-	B.Range(edge, Face,myEdgePro->FirstParam(), myEdgePro->LastParam());
+        if (Abs (myEdgePro->FirstParam() - myEdgePro->LastParam()) < Precision::PConfusion())
+          continue;
+        B.Range(edge, Face,myEdgePro->FirstParam(), myEdgePro->LastParam());
       }
       else {
         RemoveSinglePCurve(edge, Face);