From 5ee640be6c6819a672ba677bd209f272f90667df Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?S=C3=A9bastien=20Loriot?= <sebastien.loriot@cgal.org>
Date: Tue, 26 Feb 2019 09:11:07 +0100
Subject: [PATCH] add missing function required by the concept

---
 BGL/include/CGAL/boost/graph/Face_filtered_graph.h | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/BGL/include/CGAL/boost/graph/Face_filtered_graph.h b/BGL/include/CGAL/boost/graph/Face_filtered_graph.h
index ffaedbf181e..38ff5c9814a 100644
--- a/BGL/include/CGAL/boost/graph/Face_filtered_graph.h
+++ b/BGL/include/CGAL/boost/graph/Face_filtered_graph.h
@@ -650,6 +650,17 @@ degree(typename boost::graph_traits<Face_filtered_graph<Graph, FIMap, VIMap, HIM
   return v_deg;
 }
 
+template<typename Graph,
+         typename FIMap,
+         typename VIMap,
+         typename HIMap>
+typename boost::graph_traits<Graph>::degree_size_type
+degree(typename boost::graph_traits<Face_filtered_graph<Graph, FIMap, VIMap, HIMap> >::face_descriptor f,
+       const Face_filtered_graph<Graph, FIMap, VIMap, HIMap>& w)
+{
+  return degree(f, w.graph());
+}
+
 template<typename Graph,
          typename FIMap,
          typename VIMap,