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diff --git a/boost/poly_collection/base_collection_fwd.hpp b/boost/poly_collection/base_collection_fwd.hpp
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+++ b/boost/poly_collection/base_collection_fwd.hpp
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+/* Copyright 2016-2017 Joaquin M Lopez Munoz.
+ * Distributed under the Boost Software License, Version 1.0.
+ * (See accompanying file LICENSE_1_0.txt or copy at
+ * http://www.boost.org/LICENSE_1_0.txt)
+ *
+ * See http://www.boost.org/libs/poly_collection for library home page.
+ */
+
+#ifndef BOOST_POLY_COLLECTION_BASE_COLLECTION_FWD_HPP
+#define BOOST_POLY_COLLECTION_BASE_COLLECTION_FWD_HPP
+
+#if defined(_MSC_VER)
+#pragma once
+#endif
+
+#include <memory>
+
+namespace boost{
+
+namespace poly_collection{
+
+template<typename Base,typename Allocator=std::allocator<Base>>
+class base_collection;
+
+template<typename Base,typename Allocator>
+bool operator==(
+  const base_collection<Base,Allocator>& x,
+  const base_collection<Base,Allocator>& y);
+
+template<typename Base,typename Allocator>
+bool operator!=(
+  const base_collection<Base,Allocator>& x,
+  const base_collection<Base,Allocator>& y);
+
+template<typename Base,typename Allocator>
+void swap(
+  base_collection<Base,Allocator>& x,base_collection<Base,Allocator>& y);
+
+} /* namespace poly_collection */
+
+using poly_collection::base_collection;
+
+} /* namespace boost */
+
+#endif