From 54629efea2a2b970f3080b9cf080cdd306e277d0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?S=C3=A9bastien=20Loriot?= <sebastien.loriot@cgal.org>
Date: Thu, 3 Nov 2022 15:51:11 +0100
Subject: [PATCH] make the operator const

---
 BGL/include/CGAL/boost/graph/properties_OpenMesh.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/BGL/include/CGAL/boost/graph/properties_OpenMesh.h b/BGL/include/CGAL/boost/graph/properties_OpenMesh.h
index 7f1d44979d1..5b252c00ee1 100644
--- a/BGL/include/CGAL/boost/graph/properties_OpenMesh.h
+++ b/BGL/include/CGAL/boost/graph/properties_OpenMesh.h
@@ -202,7 +202,7 @@ public:
     : sm_(pm.sm_)
     {}
 
-  reference operator[](key_type v)
+  reference operator[](key_type v) const
   {
 #if defined(CGAL_USE_OM_POINTS)
     return sm_->point(v);