From b795de217ba947d84098f68f899c2f5e53f5ff5a Mon Sep 17 00:00:00 2001
From: Jeff Snyder <jeff-github@caffeinated.me.uk>
Date: Wed, 8 May 2019 16:22:23 +0100
Subject: [PATCH] Allow void as an option with
 BOOST_INTRUSIVE_VARIADIC_TEMPLATES enabled

---
 include/boost/intrusive/pack_options.hpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/include/boost/intrusive/pack_options.hpp b/include/boost/intrusive/pack_options.hpp
index 944243f..ff07678 100644
--- a/include/boost/intrusive/pack_options.hpp
+++ b/include/boost/intrusive/pack_options.hpp
@@ -209,6 +209,12 @@ struct do_pack<typelist<Prev, Last> >
    typedef typename Prev::template pack<Last> type;
 };
 
+template<class ...Others>
+struct do_pack<typelist<void, Others...> >
+{
+   typedef typename do_pack<typelist<Others...> >::type type;
+};
+
 template<class Prev, class ...Others>
 struct do_pack<typelist<Prev, Others...> >
 {