From 49d284392c0f5144b6d744f98d7369a1266e741a Mon Sep 17 00:00:00 2001
From: Vassil Vassilev <v.g.vassilev@gmail.com>
Date: Fri, 17 Jul 2020 11:06:33 +0300
Subject: [PATCH] Add missing include

This patch allows the header to be built standalone, as part of clang C++ modules builds
---
 include/boost/algorithm/string/detail/classification.hpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/boost/algorithm/string/detail/classification.hpp b/include/boost/algorithm/string/detail/classification.hpp
index febf8b7..30a37c6 100644
--- a/include/boost/algorithm/string/detail/classification.hpp
+++ b/include/boost/algorithm/string/detail/classification.hpp
@@ -13,10 +13,12 @@
 
 #include <boost/algorithm/string/config.hpp>
 #include <algorithm>
+#include <cstring>
 #include <functional>
 #include <locale>
 
 #include <boost/range/begin.hpp>
+#include <boost/range/distance.hpp>
 #include <boost/range/end.hpp>
 
 #include <boost/algorithm/string/predicate_facade.hpp>