1 files changed, 56 insertions, 0 deletions
diff --git a/libstdc++-v3/testsuite/27_io/objects/char/12048-5.cc b/libstdc++-v3/testsuite/27_io/objects/char/12048-5.cc
new file mode 100644
index 000000000..dd544b737
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/objects/char/12048-5.cc
@@ -0,0 +1,56 @@
+// Derived from libstdc++/12048 by LJR <ljrittle@acm.org> with
+// reminder from Petur Runolfsson <peturr02@ru.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/>.
+
+// 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-require-fileio "" }
+
+// { dg-do run { xfail *-*-* } }
+
+#include <iostream>
+#include <cstdio>
+#include <testsuite_hooks.h>
+
+void
+test01()
+{
+  VERIFY( std::freopen("cin_unget-1.txt", "r", stdin) );
+
+  char c1;
+  int c2;
+  char c3;
+  std::cin.get(c1);
+  c2 = std::fgetc(stdin);
+  std::cin.unget();
+  if (std::cin.good())
+    {
+      std::cin.get(c3);
+      VERIFY( std::cin.good() );
+      VERIFY( c3 == std::char_traits<char>::to_char_type(c2) );
+    }
+}
+
+int main(void)
+{
+  test01();
+  return 0;
+}