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diff --git a/libstdc++-v3/testsuite/20_util/duration/cons/2.cc b/libstdc++-v3/testsuite/20_util/duration/cons/2.cc
new file mode 100644
index 00000000..820d7640
--- /dev/null
+++ b/libstdc++-v3/testsuite/20_util/duration/cons/2.cc
@@ -0,0 +1,119 @@
+// { dg-options "-std=gnu++0x" }
+// { dg-require-cstdint "" }
+
+// Copyright (C) 2008, 2009 Free Software Foundation
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// 20.8.3 Class template duration [time.duration]
+
+#include <chrono>
+#include <type_traits>
+#include <testsuite_hooks.h>
+
+template<typename T>
+struct type_emulator
+{
+  type_emulator() : i(T(0)) { }
+  type_emulator(T j) : i(j) { }
+  type_emulator(const type_emulator& e) : i(e.i) { }
+
+  type_emulator& operator*=(type_emulator a)
+  { i *= a.i; return *this; }
+  
+  type_emulator& operator+=(type_emulator a)
+  { i += a.i; return *this; }
+    
+  operator T () { return i; }
+  T i;
+};
+
+template<typename T>
+bool operator==(type_emulator<T> a, type_emulator<T> b)
+{ return a.i == b.i; }
+
+template<typename T>
+bool operator<(type_emulator<T> a, type_emulator<T> b)
+{ return a.i < b.i; }
+
+template<typename T>
+type_emulator<T> operator+(type_emulator<T> a, type_emulator<T> b)
+{ return a += b; }
+
+template<typename T>
+type_emulator<T> operator*(type_emulator<T> a, type_emulator<T> b)
+{ return a *= b; }
+
+namespace std
+{
+  template<typename T, typename U>
+  struct common_type<type_emulator<T>, U>
+  { typedef typename common_type<T,U>::type type; };
+  
+  template<typename T, typename U>
+  struct common_type<U, type_emulator<T>>
+  { typedef typename common_type<U,T>::type type; };
+  
+  template<typename T, typename U>
+  struct common_type<type_emulator<T>, type_emulator<U>>
+  { typedef typename common_type<T,U>::type type; };
+  
+  namespace chrono
+  {    
+    template<typename T>
+    struct treat_as_floating_point<type_emulator<T>>
+    : is_floating_point<T>
+    { };
+  }
+}
+
+typedef type_emulator<int> int_emulator;
+typedef type_emulator<double> dbl_emulator;
+
+// 20.8.3.1 duration constructors [time.duration.cons]
+void
+test01()
+{
+  bool test __attribute__((unused)) = true;
+  using namespace std::chrono;
+  
+  duration<int> d0(3);
+  duration<int> d0_copy(d0);
+  VERIFY(d0_copy.count() == d0.count());
+  
+  duration<int, std::milli> d1(5);
+  duration<int, std::micro> d1_copy(d1);
+  VERIFY(d1.count() * 1000 == d1_copy.count());
+  
+  duration<double, std::micro> d2(8.0);
+  duration<double, std::milli> d2_copy(d2);
+  VERIFY(d2.count() == d2_copy.count() * 1000.0);
+  
+  duration<int_emulator, std::milli> d3(5);
+  duration<int_emulator, std::micro> d3_copy(d3);
+  VERIFY(d3.count() * 1000 == d3_copy.count());
+  
+  duration<dbl_emulator, std::micro> d4(5.0);
+  duration<dbl_emulator, std::milli> d4_copy(d4);
+  VERIFY(d4.count() == d4_copy.count() * dbl_emulator(1000.0));
+}
+
+int
+main()
+{
+  test01();
+  return 0;
+}