gentoo-overlay/dev-libs/msgpack/files/msgpack-1.1.0-gcc6.patch

Bug: https://bugs.gentoo.org/623492
Backported from: https://github.com/msgpack/msgpack-c/commit/66a5fcf8f1a9e57b02904a6ac55a86a9c74ea1de

--- a/include/msgpack/adaptor/detail/cpp11_msgpack_tuple.hpp
+++ b/include/msgpack/adaptor/detail/cpp11_msgpack_tuple.hpp
@@ -46,13 +46,14 @@
     public:
         using base = std::tuple<Types...>;
 
-        using base::base;
 
-        tuple() = default;
         tuple(tuple const&) = default;
         tuple(tuple&&) = default;
 
         template<typename... OtherTypes>
+        tuple(OtherTypes&&... other):base(std::forward<OtherTypes>(other)...) {}
+
+        template<typename... OtherTypes>
         tuple(tuple<OtherTypes...> const& other):base(static_cast<std::tuple<OtherTypes...> const&>(other)) {}
         template<typename... OtherTypes>
         tuple(tuple<OtherTypes...> && other):base(static_cast<std::tuple<OtherTypes...> &&>(other)) {}