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diff --git a/libstdc++-v3/testsuite/21_strings/basic_string/numeric_conversions/wchar_t/stold.cc b/libstdc++-v3/testsuite/21_strings/basic_string/numeric_conversions/wchar_t/stold.cc
new file mode 100644
index 00000000..4757f0c0
--- /dev/null
+++ b/libstdc++-v3/testsuite/21_strings/basic_string/numeric_conversions/wchar_t/stold.cc
@@ -0,0 +1,116 @@
+// { dg-options "-std=gnu++0x" }
+// 2008-06-15  Paolo Carlini  <paolo.carlini@oracle.com>
+
+// Copyright (C) 2008, 2009 Free Software Foundation, Inc.
+//
+// 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/>.
+
+// 21.4 Numeric Conversions [string.conversions]
+
+#include <string>
+#include <limits>
+#include <stdexcept>
+#include <testsuite_hooks.h>
+
+void
+test01()
+{
+#ifdef _GLIBCXX_USE_C99
+
+  bool test __attribute__((unused)) = false;
+  using namespace std;
+
+  try
+    {
+      wstring one;
+      stold(one);      
+    }
+  catch(std::invalid_argument)
+    {
+      test = true;
+    }
+  catch(...)
+    {
+    }
+  VERIFY( test );
+
+  test = false;
+  try
+    {
+      wstring one(L"a");
+      stold(one);      
+    }
+  catch(std::invalid_argument)
+    {
+      test = true;
+    }
+  catch(...)
+    {
+    }
+  VERIFY( test );
+
+  long double ld1 = 0.0L;
+  size_t idx1 = 0;
+  try
+    {
+      wstring one(L"2.0a");
+      ld1 = stold(one, &idx1);      
+    }
+  catch(...)
+    {
+      test = false;
+    }
+  VERIFY( test );
+  VERIFY( ld1 == 2.0L );
+  VERIFY( idx1 == 3 );
+
+  test = false;
+  try
+    {
+      wstring one(L"1e");
+      one.append(2 * numeric_limits<long double>::max_exponent10, L'9');
+      ld1 = stold(one);
+    }
+  catch(std::out_of_range)
+    {
+      test = true;
+    }
+  catch(...)
+    {
+    }
+  VERIFY( test );
+  VERIFY( ld1 == 2.0L );
+
+  try
+    {
+      long double ld0 = numeric_limits<long double>::max() / 100.0L;
+      wstring one(to_wstring(ld0));
+      stold(one);
+    }
+  catch(...)
+    {
+      test = false;
+    }
+  VERIFY( test );
+
+#endif
+}
+
+int main()
+{
+  test01();
+  return 0;
+}