From 3b8c06f83631c43b4bce1735d12f51dc729beab1 Mon Sep 17 00:00:00 2001
From: Jane Tournois <jane.tournois@geometryfactory.com>
Date: Thu, 18 Jun 2020 14:23:16 +0200
Subject: [PATCH] fix adjacent_vertices_threadsafe

internal::Has_member_visited<Vertex> is not threadsafe
---
 TDS_3/include/CGAL/Triangulation_data_structure_3.h    | 2 +-
 Triangulation_3/include/CGAL/Regular_triangulation_3.h | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/TDS_3/include/CGAL/Triangulation_data_structure_3.h b/TDS_3/include/CGAL/Triangulation_data_structure_3.h
index c81a7cab524..1024efa0943 100644
--- a/TDS_3/include/CGAL/Triangulation_data_structure_3.h
+++ b/TDS_3/include/CGAL/Triangulation_data_structure_3.h
@@ -1339,7 +1339,7 @@ public:
     }
     return visit_incident_cells_threadsafe<
       Vertex_extractor<Vertex_feeder_treatment<OutputIterator>, OutputIterator, Filter,
-                       internal::Has_member_visited<Vertex>::value>,
+                       false>,
       OutputIterator>(v, vertices, f);
   }
 
diff --git a/Triangulation_3/include/CGAL/Regular_triangulation_3.h b/Triangulation_3/include/CGAL/Regular_triangulation_3.h
index b93970449ce..0bf3b88d919 100644
--- a/Triangulation_3/include/CGAL/Regular_triangulation_3.h
+++ b/Triangulation_3/include/CGAL/Regular_triangulation_3.h
@@ -147,6 +147,7 @@ public:
   using Tr_Base::geom_traits;
 #endif
   using Tr_Base::adjacent_vertices;
+  using Tr_Base::adjacent_vertices_threadsafe;
   using Tr_Base::cw;
   using Tr_Base::ccw;
   using Tr_Base::construct_point;