From 53a32b59b968631973303c6092ec288bba470538 Mon Sep 17 00:00:00 2001
From: artemp <artem@mapnik.org>
Date: Thu, 30 Mar 2017 14:04:57 +0100
Subject: [PATCH] add `boost::geometry::traits::push_back` specialisation for
 `mapnik::interior_rings<CoordinateType>`

---
 include/mapnik/geometry/boost_adapters.hpp | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/include/mapnik/geometry/boost_adapters.hpp b/include/mapnik/geometry/boost_adapters.hpp
index dd6b9e587..e46a25c9d 100644
--- a/include/mapnik/geometry/boost_adapters.hpp
+++ b/include/mapnik/geometry/boost_adapters.hpp
@@ -247,6 +247,17 @@ struct clear<mapnik::interior_rings<CoordinateType>>
     }
 };
 
+template <typename CoordinateType>
+struct push_back<mapnik::interior_rings<CoordinateType>>
+{
+    template <typename Ring>
+    static inline void apply(mapnik::interior_rings<CoordinateType> interiors, Ring const& ring)
+    {
+        interiors.push_back(ring);
+    }
+};
+
+
 }}}