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diff --git a/libstdc++-v3/testsuite/21_strings/basic_string/numeric_conversions/wchar_t/to_wstring.cc b/libstdc++-v3/testsuite/21_strings/basic_string/numeric_conversions/wchar_t/to_wstring.cc
new file mode 100644
index 00000000..dd46736e
--- /dev/null
+++ b/libstdc++-v3/testsuite/21_strings/basic_string/numeric_conversions/wchar_t/to_wstring.cc
@@ -0,0 +1,65 @@
+// { 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 <testsuite_hooks.h>
+
+void
+test01()
+{
+#ifdef _GLIBCXX_USE_C99
+
+  bool test __attribute__((unused)) = true;
+  using namespace std;
+
+  long long ll1 = -2;
+  wstring one(to_wstring(ll1));
+  VERIFY( one == L"-2" );
+
+  long long ll2 = 10;
+  wstring two(to_wstring(ll2));
+  VERIFY( two == L"10" );
+
+  unsigned long long ull1 = 2;
+  wstring three(to_wstring(ull1));
+  VERIFY( three == L"2" );
+
+  unsigned long long ull2 = 3000;
+  wstring four(to_wstring(ull2));
+  VERIFY( four == L"3000" );
+
+  long double ld1 = 2.0L;
+  wstring five(to_wstring(ld1));
+  VERIFY( five == L"2.000000" );
+
+  long double ld2 = -4.0L;
+  wstring six(to_wstring(ld2));
+  VERIFY( six == L"-4.000000" );
+
+#endif
+}
+
+int main()
+{
+  test01();
+  return 0;
+}