From 257664e0d09eefc690b192639813e9ef4ff33503 Mon Sep 17 00:00:00 2001
From: Romain Geissler <romain.geissler@amadeus.com>
Date: Fri, 28 Jun 2019 15:53:56 +0000
Subject: [PATCH] Avoid gcc 9 -Wdeprecated-copy warning (when you define the
 copy constructor, you have to define to copy assignment operator too in C++
 >= 11).

---
 include/boost/bimap/detail/map_view_iterator.hpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/boost/bimap/detail/map_view_iterator.hpp b/boost/bimap/detail/map_view_iterator.hpp
index 17d43cb..7b9e196 100644
--- a/boost/bimap/detail/map_view_iterator.hpp
+++ b/boost/bimap/detail/map_view_iterator.hpp
@@ -166,6 +166,13 @@ struct const_map_view_iterator :
 	const_map_view_iterator(map_view_iterator<Tag,BimapCore> i)
       : base_(i.base()) {}
 
+    const_map_view_iterator& operator=(const_map_view_iterator const & iter)
+    {
+        static_cast<base_&>(*this) = static_cast<const base_&>(iter);
+
+        return *this;
+    }
+
     BOOST_DEDUCED_TYPENAME base_::reference dereference() const
     {
         return ::boost::bimaps::relation::support::pair_by<Tag>(*this->base());