From 0a719901b64fd709c049d2d58ab5839d36186914 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ion=20Gazta=C3=B1aga?= <igaztanaga@gmail.com>
Date: Sat, 12 Nov 2016 19:06:44 +0100
Subject: [PATCH] Avoid warnings of unused "piecewise_construct"

---
 include/boost/container/detail/pair.hpp | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/include/boost/container/detail/pair.hpp b/include/boost/container/detail/pair.hpp
index 096f795..cad6f09 100644
--- a/include/boost/container/detail/pair.hpp
+++ b/include/boost/container/detail/pair.hpp
@@ -84,8 +84,17 @@ typedef unspecified piecewise_construct_t;
 //! piecewise_construct_t
 static piecewise_construct_t piecewise_construct = BOOST_CONTAINER_DOC1ST(unspecified, *std_piecewise_construct_holder<>::dummy);
 
+///@cond
+
 namespace container_detail {
 
+struct piecewise_construct_use
+{
+   //Avoid warnings of unused "piecewise_construct"
+   piecewise_construct_use()
+   {  (void)&::boost::container::piecewise_construct;   }
+};
+
 template <class T1, class T2>
 struct pair;
 
@@ -130,6 +139,8 @@ struct pair_nat;
 template<typename T, typename U, typename V>
 void get(T); //to enable ADL
 
+///@endcond
+
 template <class T1, class T2>
 struct pair
 {