--- /dev/null
+// 2003-02-24 Petur Runolfsson <peturr02 at ru dot is>
+
+// 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/>.
+
+#include <ostream>
+#include <streambuf>
+#include <testsuite_hooks.h>
+
+// libstdc++/9827
+class Buf : public std::streambuf
+{
+};
+
+void test01()
+{
+ using namespace std;
+ bool test __attribute__((unused)) = true;
+
+ Buf buf;
+ ostream stream(&buf);
+
+ stream << 1;
+ VERIFY(!stream.good());
+}
+
+int main()
+{
+ test01();
+ return 0;
+}