From 830c88cc3a76f364165f19cdfad6f8ae0a39b361 Mon Sep 17 00:00:00 2001
From: eap <eap@opencascade.com>
Date: Mon, 12 Nov 2018 16:42:33 +0300
Subject: [PATCH] 54462: Hexa(ijk) fails on a composite block with a
 degenerated edge

---
 src/StdMeshers/StdMeshers_CompositeHexa_3D.cxx | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/StdMeshers/StdMeshers_CompositeHexa_3D.cxx b/src/StdMeshers/StdMeshers_CompositeHexa_3D.cxx
index ec02f71e1..a023ae623 100644
--- a/src/StdMeshers/StdMeshers_CompositeHexa_3D.cxx
+++ b/src/StdMeshers/StdMeshers_CompositeHexa_3D.cxx
@@ -893,6 +893,8 @@ bool _QuadFaceGrid::Init(const TopoDS_Face& f, SMESH_Mesh& mesh)
     while ( !edges.empty()) {
       sideEdges.clear();
       sideEdges.splice( sideEdges.end(), edges, edges.begin());// edges.front()->sideEdges.back()
+      if ( SMESH_Algo::isDegenerated( sideEdges.back() ))
+        continue;
       while ( !edges.empty() ) {
         if ( SMESH_Algo::IsContinuous( sideEdges.back(), edges.front() )) {
           sideEdges.splice( sideEdges.end(), edges, edges.begin());
-- 
2.30.2