From c469c4d2acbd5360f2edb2815d3cf4b0951e566b Mon Sep 17 00:00:00 2001
From: Jane Tournois <janetournois@users.noreply.github.com>
Date: Fri, 24 Feb 2023 15:12:54 +0100
Subject: [PATCH] add missing reference_wrapper

---
 STL_Extension/include/CGAL/Named_function_parameters.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/STL_Extension/include/CGAL/Named_function_parameters.h b/STL_Extension/include/CGAL/Named_function_parameters.h
index 61974cf4bb9..866ddad831e 100644
--- a/STL_Extension/include/CGAL/Named_function_parameters.h
+++ b/STL_Extension/include/CGAL/Named_function_parameters.h
@@ -376,7 +376,7 @@ struct Named_function_parameters
   template<typename K>                                                \
   Named_function_parameters<std::reference_wrapper<K>,                \
                             internal_np::X, self>                     \
-  Z(K& k) const                                                       \
+  Z(std::reference_wrapper<K> k) const                                                       \
   {                                                                   \
     typedef Named_function_parameters<std::reference_wrapper<K>,      \
                                       internal_np::X, self> Params;   \