--- /dev/null
+// 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/>.
+
+// DR 49 states that cin.rdbuf()->sbumpc() and fgetc(stdin) should be
+// equivalent and interchangable. Currently however, cin.rdbuf()->sungetc()
+// only returns characters that were read with cin.rdbuf()->sbumpc()
+
+// { dg-do run { xfail *-*-* } }
+
+#include <iostream>
+#include <cstdio>
+#include <cwchar>
+#include <testsuite_hooks.h>
+
+void
+test01()
+{
+ std::freopen("cin_unget-1.txt", "r", stdin);
+
+ wchar_t c1;
+ std::wint_t c2;
+ wchar_t c3;
+ std::wcin.get(c1);
+ c2 = std::fgetwc(stdin);
+ std::wcin.unget();
+ if (std::wcin.good())
+ {
+ std::wcin.get(c3);
+ VERIFY( std::wcin.good() );
+ VERIFY( c3 == std::char_traits<wchar_t>::to_char_type(c2) );
+ }
+}
+
+int main(void)
+{
+ test01();
+ return 0;
+}