--- /dev/null
+// 2001-05-21 Benjamin Kosnik <bkoz@redhat.com>
+
+// Copyright (C) 2001, 2002, 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>
+
+class testbuf : public std::filebuf
+{
+public:
+
+ // Typedefs:
+ typedef std::filebuf base_type;
+ typedef base_type::traits_type traits_type;
+ typedef base_type::char_type char_type;
+
+ testbuf(): base_type()
+ { _M_mode = (std::ios_base::in | std::ios_base::out); }
+
+ bool
+ check_pointers()
+ {
+ bool test __attribute__((unused)) = true;
+ test = (this->pbase() == NULL);
+ test &= (this->pptr() == NULL);
+ return test;
+ }
+};
+
+const char name_01[] = "filebuf_virtuals-1.txt";
+
+// Test overloaded virtual functions.
+void test05()
+{
+ using namespace std;
+ typedef std::filebuf::int_type int_type;
+ typedef std::filebuf::traits_type traits_type;
+ typedef std::filebuf::pos_type pos_type;
+ typedef std::filebuf::off_type off_type;
+ typedef size_t size_type;
+
+ bool test __attribute__((unused)) = true;
+
+ {
+ testbuf f_tmp;
+
+ // setbuf
+ // pubsetbuf(char_type* s, streamsize n)
+ f_tmp.pubsetbuf(0,0);
+ VERIFY( f_tmp.check_pointers() );
+ }
+
+ {
+ testbuf f_tmp;
+
+ f_tmp.open(name_01, ios_base::out | ios_base::in);
+ f_tmp.sbumpc();
+
+ // setbuf
+ // pubsetbuf(char_type* s, streamsize n)
+ f_tmp.pubsetbuf(0, 0);
+ VERIFY( f_tmp.check_pointers() );
+ }
+}
+
+int main()
+{
+ test05();
+ return 0;
+}