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diff --git a/libstdc++-v3/testsuite/27_io/basic_filebuf/overflow/char/2-unbuf.cc b/libstdc++-v3/testsuite/27_io/basic_filebuf/overflow/char/2-unbuf.cc
new file mode 100644
index 00000000..792b7970
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_filebuf/overflow/char/2-unbuf.cc
@@ -0,0 +1,55 @@
+// 2003-06-10  Paolo Carlini  <pcarlini@unitus.it>
+
+// Copyright (C) 2003, 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/>.
+
+// 27.8.1.4 Overridden virtual functions
+
+// { dg-require-fileio "" }
+
+#include <fstream>
+#include <testsuite_hooks.h>
+
+const char name_08[] = "filebuf_virtuals-8.txt"; // empty file, need to create
+
+class OverBuf : public std::filebuf
+{
+public:
+  int_type pub_overflow(int_type c = traits_type::eof())
+  { return std::filebuf::overflow(c); }
+};
+
+// According to 27.5.2.4.5 filebuf::overflow() returns not_eof(eof()).
+void test01()
+{
+  using namespace std;
+  bool test __attribute__((unused)) = true;
+  typedef OverBuf::traits_type  traits_type;
+
+  OverBuf fb;
+  fb.pubsetbuf(0, 0);
+  fb.open(name_08, ios_base::out | ios_base::trunc);
+  
+  VERIFY( fb.pub_overflow() == traits_type::not_eof(traits_type::eof()) );
+  fb.close();
+}
+
+int main() 
+{
+  test01();
+  return 0;
+}