diff --git a/include/boost/unordered/detail/extract_key.hpp b/include/boost/unordered/detail/extract_key.hpp
index cba889eb..59fab7c2 100644
--- a/include/boost/unordered/detail/extract_key.hpp
+++ b/include/boost/unordered/detail/extract_key.hpp
@@ -106,7 +106,7 @@ namespace unordered_detail {
             {
                 return v.first;
             }
-/*
+
             template <class Second>
             static key_type const& extract(
                 std::pair<key_type&, Second> const& v)
@@ -120,7 +120,6 @@ namespace unordered_detail {
             {
                 return v.first;
             }
-*/
 
 #if defined(BOOST_UNORDERED_STD_FORWARD)
             template <class Arg1, class... Args>
diff --git a/test/objects/test.hpp b/test/objects/test.hpp
index 63f7c91b..767dbb4a 100644
--- a/test/objects/test.hpp
+++ b/test/objects/test.hpp
@@ -93,6 +93,10 @@ namespace test
             return x1.type_ != x2.type_;
         }
     };
+    
+    std::size_t hash_value(test::object const& x) {
+        return hash()(x);
+    }
 
     class less
     {
diff --git a/test/unordered/Jamfile.v2 b/test/unordered/Jamfile.v2
index ee1505f7..ce89396a 100644
--- a/test/unordered/Jamfile.v2
+++ b/test/unordered/Jamfile.v2
@@ -27,6 +27,7 @@ test-suite unordered
         [ run move_tests.cpp : : : <test-info>always_show_run_output ]
         [ run assign_tests.cpp ]
         [ run insert_tests.cpp ]
+        [ run insert_range_tests.cpp ]
         [ run insert_stable_tests.cpp ]
         [ run unnecessary_copy_tests.cpp ]
         [ run erase_tests.cpp ]
diff --git a/test/unordered/insert_range_tests.cpp b/test/unordered/insert_range_tests.cpp
new file mode 100644
index 00000000..ef55cf6b
--- /dev/null
+++ b/test/unordered/insert_range_tests.cpp
@@ -0,0 +1,40 @@
+
+// Copyright 2006-2009 Daniel James.
+// 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)
+
+#include <boost/unordered_set.hpp>
+#include <boost/unordered_map.hpp>
+#include <vector>
+#include "../helpers/test.hpp"
+#include "../objects/test.hpp"
+
+UNORDERED_AUTO_TEST(needless_copies_1) {
+    std::vector<std::pair<test::object, int> > src;
+    src.push_back(std::pair<test::object, int>(test::object(1, 2), 0));
+
+    boost::unordered_map<test::object, double> dst;
+    dst[test::object(1, 2)] = 0;
+
+    test::object_count count = test::global_object_count;
+    dst.insert(src.begin(), src.end());
+    BOOST_TEST(count == test::global_object_count);
+}
+
+UNORDERED_AUTO_TEST(needless_copies_2) {
+    test::object x(1, 2);
+    std::pair<test::object&, int> src(x, 0);
+
+    boost::unordered_map<test::object, double> dst;
+
+    test::object_count count = test::global_object_count;
+    dst.emplace(src);
+    BOOST_TEST(test::global_object_count.instances == count.instances + 1);
+    BOOST_TEST_EQ(test::global_object_count.constructions, count.constructions + 1);
+
+    count = test::global_object_count;
+    dst.emplace(src);
+    BOOST_TEST_EQ(test::global_object_count, count);
+}
+
+RUN_TESTS()