From 1e0276741beae5a3fb51489d3cbe289ff51f83fb Mon Sep 17 00:00:00 2001
From: Romain Geissler <romain.geissler@amadeus.com>
Date: Wed, 17 Apr 2019 21:13:33 +0000
Subject: [PATCH] Fix -Wdeprecated-copy warning with gcc 9.

---
 include/boost/tuple/detail/tuple_basic.hpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/include/boost/tuple/detail/tuple_basic.hpp b/include/boost/tuple/detail/tuple_basic.hpp
index 4ea13ef..7e5dddc 100644
--- a/include/boost/tuple/detail/tuple_basic.hpp
+++ b/include/boost/tuple/detail/tuple_basic.hpp
@@ -310,6 +310,7 @@ struct cons {
       tail (t2, t3, t4, t5, t6, t7, t8, t9, t10, detail::cnull())
       {}
 
+  cons( const cons& u ) : head(u.head), tail(u.tail) {}
 
   template <class HT2, class TT2>
   cons( const cons<HT2, TT2>& u ) : head(u.head), tail(u.tail) {}
@@ -389,6 +390,8 @@ struct cons<HT, null_type> {
        const null_type&, const null_type&, const null_type&)
   : head () {}
 
+  cons( const cons& u ) : head(u.head) {}
+
   template <class HT2>
   cons( const cons<HT2, null_type>& u ) : head(u.head) {}