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diff --git a/libstdc++-v3/testsuite/24_iterators/ostreambuf_iterator/requirements/base_classes.cc b/libstdc++-v3/testsuite/24_iterators/ostreambuf_iterator/requirements/base_classes.cc
new file mode 100644
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+++ b/libstdc++-v3/testsuite/24_iterators/ostreambuf_iterator/requirements/base_classes.cc
@@ -0,0 +1,38 @@
+// { dg-do compile }
+// 2001-04-30  Benjamin Kosnik  <bkoz@redhat.com>
+
+// Copyright (C) 2001, 2003 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 2, 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 COPYING.  If not, write to the Free
+// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+// USA.
+
+// 24.5.4 template class ostreambuf_iterator
+
+#include <sstream>
+#include <iterator>
+#include <testsuite_hooks.h>
+
+void test01()
+{
+  using namespace std;
+
+  // Check for required base class.
+  typedef ostreambuf_iterator<char> test_iterator;
+  typedef iterator<output_iterator_tag, void, void, void, void> base_iterator;
+  ostringstream osstream("this tag");
+  test_iterator  r_it(osstream);
+  base_iterator* base __attribute__((unused)) = &r_it;
+}