From 4521eff93cd02b3883727c7e5104274bab3ddb87 Mon Sep 17 00:00:00 2001
From: Peter Dimov <pdimov@pdimov.com>
Date: Mon, 8 May 2017 18:59:19 +0300
Subject: [PATCH] Cast the result of f() to void (avoid op,)

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

diff --git a/include/boost/tuple_for_each.hpp b/include/boost/tuple_for_each.hpp
index 35d2b7a..2d2d135 100644
--- a/include/boost/tuple_for_each.hpp
+++ b/include/boost/tuple_for_each.hpp
@@ -17,7 +17,7 @@ namespace detail
 template<class Tp, std::size_t... J, class F> BOOST_CONSTEXPR F tuple_for_each_impl( Tp && tp, boost::integer_sequence<std::size_t, J...>, F && f )
 {
     using A = int[sizeof...(J)];
-    return (void)A{ (f(std::get<J>(std::forward<Tp>(tp))), 0)... }, std::forward<F>(f);
+    return (void)A{ ((void)f(std::get<J>(std::forward<Tp>(tp))), 0)... }, std::forward<F>(f);
 }
 
 } // namespace detail