dev-libs/msgpack: fix building with GCC-6.

Gentoo-Bug: https://bugs.gentoo.org/623492

Package-Manager: Portage-2.3.6, Repoman-2.3.2
Closes: gentoo#5206

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

@@ -0,0 +1,22 @@
+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)) {}

dev-libs/msgpack/msgpack-1.1.0.ebuild

@@ -1,7 +1,8 @@
-# Copyright 1999-2015 Gentoo Foundation
+# Copyright 1999-2017 Gentoo Foundation
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=5
+
 inherit cmake-multilib
 
 if [[ ${PV} == 9999 ]]; then
@@ -27,9 +28,11 @@ DEPEND="
 "
 
 DOCS=( README.md )
+
 PATCHES=(
 	"${FILESDIR}"/${PN}-1.0.0-cflags.patch
 	"${FILESDIR}"/${PN}-1.0.0-static.patch
+	"${FILESDIR}"/${P}-gcc6.patch
 )
 
 src_configure() {
@@ -38,5 +41,6 @@ src_configure() {
 		$(cmake-utils_use static-libs MSGPACK_STATIC)
 		$(cmake-utils_use test MSGPACK_BUILD_TESTS)
 	)
+
 	cmake-multilib_src_configure
 }