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diff --git a/libstdc++-v3/testsuite/20_util/ratio/operations/45866.cc b/libstdc++-v3/testsuite/20_util/ratio/operations/45866.cc
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index 000000000..19735fc3e
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+++ b/libstdc++-v3/testsuite/20_util/ratio/operations/45866.cc
@@ -0,0 +1,67 @@
+// { dg-options "-std=gnu++0x" }
+// { dg-require-cstdint "" }
+
+// 2010-10-18  Paolo Carlini  <paolo.carlini@oracle.com>
+
+// Copyright (C) 2010 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/>.
+
+#include <ratio>
+#include <testsuite_hooks.h>
+
+// libstdc++/45866
+void test01()
+{
+  bool test __attribute__((unused)) = true;
+
+  typedef std::ratio<1, 4>::type r_type1;
+  typedef std::ratio<3, 2>::type r_type2;
+
+  typedef std::ratio_add<r_type1, r_type2> ra_type;
+
+  VERIFY( ra_type::num == ra_type::type::num );
+  VERIFY( ra_type::den == ra_type::type::den );
+  VERIFY( ra_type::num == 7 );
+  VERIFY( ra_type::den == 4 );
+
+  typedef std::ratio_subtract<r_type1, r_type2> rs_type;
+
+  VERIFY( rs_type::num == rs_type::type::num );
+  VERIFY( rs_type::den == rs_type::type::den );
+  VERIFY( rs_type::num == -5 );
+  VERIFY( rs_type::den == 4 );
+
+  typedef std::ratio_multiply<r_type1, r_type2> rm_type;
+
+  VERIFY( rm_type::num == rm_type::type::num );
+  VERIFY( rm_type::den == rm_type::type::den );
+  VERIFY( rm_type::num == 3 );
+  VERIFY( rm_type::den == 8 );
+
+  typedef std::ratio_divide<r_type1, r_type2> rd_type;
+
+  VERIFY( rd_type::num == rd_type::type::num );
+  VERIFY( rd_type::den == rd_type::type::den );
+  VERIFY( rd_type::num == 1 );
+  VERIFY( rd_type::den == 6 );
+}
+
+int main()
+{
+  test01();
+  return 0;
+}