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diff --git a/libstdc++-v3/testsuite/27_io/basic_stringstream/str/wchar_t/3.cc b/libstdc++-v3/testsuite/27_io/basic_stringstream/str/wchar_t/3.cc
new file mode 100644
index 00000000..ffcf3eae
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_stringstream/str/wchar_t/3.cc
@@ -0,0 +1,56 @@
+// Copyright (C) 2004, 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/>.
+
+// 27.7.6 member functions (stringstream_members)
+
+#include <sstream>
+#include <testsuite_hooks.h>
+
+void
+test03()
+{
+  bool test __attribute__((unused)) = true;
+
+  //
+  // 1: Automatic formatting of a compound string
+  //
+  int i = 1024;
+  int *pi = &i;
+  double d = 3.14159;
+  double *pd = &d;
+  std::wstring blank;
+  std::wostringstream ostrst01; 
+  std::wostringstream ostrst02(blank); 
+  
+  // No buffer, so should be created.
+  ostrst01 << L"i: " << i << L" i's address:  " << pi << L'\n'
+	     << L"d: " << d << L" d's address: " << pd << std::endl;
+  // Buffer, so existing buffer should be overwritten.
+  ostrst02 << L"i: " << i << L" i's address:  " << pi << L'\n'
+	     << L"d: " << d << L" d's address: " << pd << std::endl;
+
+  std::wstring msg01 = ostrst01.str();
+  std::wstring msg02 = ostrst02.str();
+  VERIFY( msg01 == msg02 );
+  VERIFY( msg02 != blank );
+}
+
+int main()
+{
+  test03();
+  return 0;
+}