From 19bb08cf17cffba726875a906ba0be8fdfa15cd0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ion=20Gazta=C3=B1aga?= <igaztanaga@gmail.com>
Date: Sun, 29 May 2022 17:58:56 +0200
Subject: [PATCH] Make identity operator() const

---
 include/boost/move/detail/meta_utils.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/boost/move/detail/meta_utils.hpp b/include/boost/move/detail/meta_utils.hpp
index d23012e..7c90de2 100644
--- a/include/boost/move/detail/meta_utils.hpp
+++ b/include/boost/move/detail/meta_utils.hpp
@@ -225,7 +225,7 @@ struct identity
 {
    typedef T type;
    typedef typename add_const_lvalue_reference<T>::type reference;
-   BOOST_MOVE_FORCEINLINE reference operator()(reference t)
+   BOOST_MOVE_FORCEINLINE reference operator()(reference t) const
    {  return t;   }
 };