From 401ce642c564f7262ac2a6772fa7788620a4d3a8 Mon Sep 17 00:00:00 2001
From: Vassil Vassilev <v.g.vassilev@gmail.com>
Date: Fri, 17 Jul 2020 01:02:48 +0300
Subject: [PATCH] Add missing include

This change allows the header to compile standalone in clang -fmodules context.
---
 include/boost/range/detail/has_member_size.hpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/boost/range/detail/has_member_size.hpp b/include/boost/range/detail/has_member_size.hpp
index 0c639aa89..43f4ef706 100644
--- a/include/boost/range/detail/has_member_size.hpp
+++ b/include/boost/range/detail/has_member_size.hpp
@@ -15,6 +15,7 @@
 #include <boost/type_traits/is_member_function_pointer.hpp>
 #include <boost/mpl/and.hpp>
 #include <boost/mpl/bool.hpp>
+#include <boost/mpl/if.hpp>
 #include <boost/cstdint.hpp>
 
 namespace boost