From d33254fca5d6a988273ebc4eae4bc19f885b18d8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ion=20Gazta=C3=B1aga?= <igaztanaga@gmail.com>
Date: Sun, 30 Nov 2025 22:52:38 +0100
Subject: [PATCH] Add missing specialization if "add_rvalue_reference" for
 array types that returns an lvalue reference so that some old compilers don't
 return errors when using declval()

---
 include/boost/move/detail/meta_utils.hpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/boost/move/detail/meta_utils.hpp b/include/boost/move/detail/meta_utils.hpp
index ae0344a..46883a8 100644
--- a/include/boost/move/detail/meta_utils.hpp
+++ b/include/boost/move/detail/meta_utils.hpp
@@ -18,6 +18,7 @@
 #  pragma once
 #endif
 
+#include <cstddef>
 #include <boost/move/detail/workaround.hpp>  //forceinline
 #include <boost/move/detail/meta_utils_core.hpp>
 #include <boost/move/detail/addressof.hpp>
@@ -527,6 +528,10 @@ template< class T >
 struct add_rvalue_reference<T &>
 {  typedef T & type; };
 
+template< class T, std::size_t N >
+struct add_rvalue_reference<T[N]>
+{  typedef T (&type)[N]; };
+
 #endif // #ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
 
 template< class T > struct remove_rvalue_reference { typedef T type; };