From d9b433f86b95c5e2a38e41d3387659c245e0104b Mon Sep 17 00:00:00 2001
From: Guillaume Damiand <guillaume.damiand@liris.cnrs.fr>
Date: Mon, 9 May 2022 13:22:06 +0200
Subject: [PATCH] Backward compatibility

---
 .../include/CGAL/Combinatorial_map_storages_with_index.h        | 2 ++
 .../include/CGAL/Generalized_map_storages_with_index.h          | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/Combinatorial_map/include/CGAL/Combinatorial_map_storages_with_index.h b/Combinatorial_map/include/CGAL/Combinatorial_map_storages_with_index.h
index 4a56fe2492c..3a70ad02441 100644
--- a/Combinatorial_map/include/CGAL/Combinatorial_map_storages_with_index.h
+++ b/Combinatorial_map/include/CGAL/Combinatorial_map_storages_with_index.h
@@ -113,6 +113,8 @@ namespace CGAL {
     template<int i>
     using Attribute_const_handle=Attribute_const_descriptor<i>;
 
+    static Null_descriptor_type null_handle;
+
     /// Number of marks
     static const size_type NB_MARKS = 32;
 
diff --git a/Generalized_map/include/CGAL/Generalized_map_storages_with_index.h b/Generalized_map/include/CGAL/Generalized_map_storages_with_index.h
index efecbed35f4..31f6033f669 100644
--- a/Generalized_map/include/CGAL/Generalized_map_storages_with_index.h
+++ b/Generalized_map/include/CGAL/Generalized_map_storages_with_index.h
@@ -113,6 +113,8 @@ namespace CGAL {
     template<int i>
     using Attribute_const_handle=Attribute_const_descriptor<i>;
 
+    static Null_descriptor_type null_handle;
+
     /// Number of marks
     static const size_type NB_MARKS = 32;