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diff --git a/libstdc++-v3/testsuite/27_io/basic_streambuf/overflow/wchar_t/1.cc b/libstdc++-v3/testsuite/27_io/basic_streambuf/overflow/wchar_t/1.cc
new file mode 100644
index 00000000..384ea29a
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_streambuf/overflow/wchar_t/1.cc
@@ -0,0 +1,110 @@
+// 1999-10-11 bkoz
+
+// Copyright (C) 1999, 2000, 2001, 2002, 2003, 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/>.
+
+
+// 27.5.2 template class basic_streambuf
+
+#include <streambuf>
+#include <cwchar>
+#include <testsuite_hooks.h>
+
+class testbuf : public std::wstreambuf
+{
+public:
+
+  // Typedefs:
+  typedef std::wstreambuf::traits_type traits_type;
+  typedef std::wstreambuf::char_type char_type;
+
+  testbuf(): std::wstreambuf() 
+  { }
+
+  bool
+  check_pointers()
+  { 
+    bool test __attribute__((unused)) = true;
+    VERIFY( this->eback() == NULL );
+    VERIFY( this->gptr() == NULL );
+    VERIFY( this->egptr() == NULL );
+    VERIFY( this->pbase() == NULL );
+    VERIFY( this->pptr() == NULL );
+    VERIFY( this->epptr() == NULL );
+    return test;
+  }
+
+  int_type 
+  pub_uflow() 
+  { return (this->uflow()); }
+
+  int_type 
+  pub_overflow(int_type __c = traits_type::eof()) 
+  { return (this->overflow(__c)); }
+
+  int_type 
+  pub_pbackfail(int_type __c) 
+  { return (this->pbackfail(__c)); }
+
+  void 
+  pub_setg(wchar_t* beg, wchar_t* cur, wchar_t* end) 
+  { this->setg(beg, cur, end); }
+
+  void 
+  pub_setp(wchar_t* beg, wchar_t* end) 
+  { this->setp(beg, end); }
+
+protected:
+  int_type 
+  underflow() 
+  { 
+    int_type __retval = traits_type::eof();
+    if (this->gptr() < this->egptr())
+      __retval = traits_type::not_eof(0); 
+    return __retval;
+  }
+};
+
+void test01()
+{
+  typedef testbuf::traits_type traits_type;
+  typedef testbuf::int_type int_type;
+
+  bool test __attribute__((unused)) = true;
+  wchar_t lit01[52];
+  std::wcscpy(lit01, L"chicago underground trio/possible cube on delmark");
+  testbuf buf01;
+
+  // pbackfail
+  int i01 = 3;
+  buf01.pub_setg(lit01, lit01, (lit01 + i01));
+  VERIFY( i01 == buf01.in_avail() );
+  int_type intt01 = traits_type::to_int_type(L'b');
+  VERIFY( traits_type::eof() == buf01.pub_pbackfail(intt01) );
+
+  // overflow
+  VERIFY( traits_type::eof() == buf01.pub_overflow(intt01) );
+  VERIFY( traits_type::eof() == buf01.pub_overflow() );
+  VERIFY( buf01.sgetc() == traits_type::to_int_type(lit01[0]) );
+}
+
+int main() 
+{
+  test01();
+  return 0;
+}