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diff --git a/libstdc++-v3/testsuite/27_io/basic_istream/sentry/pod/1.cc b/libstdc++-v3/testsuite/27_io/basic_istream/sentry/pod/1.cc
new file mode 100644
index 00000000..e995f952
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_istream/sentry/pod/1.cc
@@ -0,0 +1,166 @@
+// 1999-10-14 bkoz
+
+// Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 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/>.
+
+
+// 27.6.1.1.2 class basic_istream::sentry
+
+#include <istream>
+#include <sstream>
+#include <typeinfo>
+#include <ext/pod_char_traits.h>
+#include <testsuite_hooks.h>
+#include <testsuite_character.h>
+
+void test01()
+{
+  using namespace std;
+  using __gnu_test::pod_ushort;
+  typedef basic_string<pod_ushort> 	string_type;
+  typedef basic_stringbuf<pod_ushort> 	stringbuf_type;
+  typedef basic_istream<pod_ushort> 	istream_type;
+
+  bool test __attribute__((unused)) = true;
+
+
+  const string_type str01;
+  stringbuf_type strbuf01;
+  stringbuf_type strbuf02(str01);
+  istream_type istr01(&strbuf01);
+  istream_type istr02(&strbuf02);
+  
+  // test negatives
+  try
+    {
+      istream_type::sentry sentry01(istr01);	
+    }
+  catch (std::bad_cast& obj)
+    {
+      // Ok, throws bad_cast because locale has no ctype facet.
+    }
+  catch (...)
+    {
+      VERIFY( false );
+    }
+
+  try
+    {
+      istream_type::sentry sentry02(istr01, true);
+    }
+  catch (std::bad_cast& obj)
+    {
+      // Ok, throws bad_cast because locale has no ctype facet.
+    }
+  catch (...)
+    {
+      VERIFY( false );
+    }
+
+  // imbued.
+  const std::locale loc(std::locale::classic(), new std::ctype<pod_ushort>);
+  istr01.imbue(loc);
+  try
+    {
+      istream_type::sentry sentry01(istr01);	
+      VERIFY( bool(sentry01) == false ); 
+    }
+  catch (...)
+    {
+      VERIFY( false );
+    }
+
+  try
+    {
+      istream_type::sentry sentry02(istr01, true);
+      VERIFY( bool(sentry02) == false ); 
+    }
+  catch (...)
+    {
+      VERIFY( false );
+    }
+
+  // test positive 
+  try
+    {
+      istream_type::sentry sentry03(istr02);	
+    }
+  catch (std::bad_cast& obj)
+    {
+      // Ok, throws bad_cast because locale has no ctype facet.
+    }
+  catch (...)
+    {
+      VERIFY( false );
+    }
+
+  try
+    {
+      istream_type::sentry sentry04(istr02, true);
+    }
+  catch (std::bad_cast& obj)
+    {
+      // Ok, throws bad_cast because locale has no ctype facet.
+    }
+  catch (...)
+    {
+      VERIFY( false );
+    }
+
+  // imbued.
+  istr02.imbue(loc);
+  try
+    {
+      istr02.clear();
+      istream_type::sentry sentry03(istr02);	
+      // ... as eofbit set.
+      VERIFY( bool(sentry03) == false ); 
+    }
+  catch (...)
+    {
+      VERIFY( false );
+    }
+
+  try
+    {
+      istr02.clear();
+      istream_type::sentry sentry04(istr02, true);
+      VERIFY( bool(sentry04) == true ); 
+    }
+  catch (...)
+    {
+      VERIFY( false );
+    }
+}
+
+#if !__GXX_WEAK__
+// Explicitly instantiate for systems with no COMDAT or weak support.
+template 
+  const std::basic_string<__gnu_test::pod_ushort>::size_type 
+  std::basic_string<__gnu_test::pod_ushort>::_Rep::_S_max_size;
+
+template 
+  const __gnu_test::pod_ushort
+  std::basic_string<__gnu_test::pod_ushort>::_Rep::_S_terminal;
+#endif
+
+int main() 
+{
+  test01();
+  return 0;
+}