--- /dev/null
+// 2006-10-01 Paolo Carlini <pcarlini@suse.de>
+
+// Copyright (C) 2006, 2007, 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/>.
+
+// { dg-require-fileio "" }
+
+#include <fstream>
+#include <testsuite_hooks.h>
+
+// DR 596.
+void test01()
+{
+ bool test __attribute__((unused)) = true;
+ const char* name = "tmp_file4";
+
+ std::fstream scratch_file;
+
+ scratch_file.open(name, std::ios_base::app);
+ VERIFY( scratch_file );
+ VERIFY( scratch_file.is_open() );
+ scratch_file.close();
+
+ scratch_file.open(name, std::ios_base::in | std::ios_base::out
+ | std::ios_base::app);
+ VERIFY( scratch_file );
+ VERIFY( scratch_file.is_open() );
+ scratch_file.close();
+
+ scratch_file.open(name, std::ios_base::in | std::ios_base::app);
+ VERIFY( scratch_file );
+ VERIFY( scratch_file.is_open() );
+ scratch_file.close();
+
+ scratch_file.open(name, std::ios_base::app | std::ios_base::binary);
+ VERIFY( scratch_file );
+ VERIFY( scratch_file.is_open() );
+ scratch_file.close();
+
+ scratch_file.open(name, std::ios_base::in | std::ios_base::out
+ | std::ios_base::app | std::ios_base::binary);
+ VERIFY( scratch_file );
+ VERIFY( scratch_file.is_open() );
+ scratch_file.close();
+
+ scratch_file.open(name, std::ios_base::in | std::ios_base::app
+ | std::ios_base::binary);
+ VERIFY( scratch_file );
+ VERIFY( scratch_file.is_open() );
+ scratch_file.close();
+}
+
+int
+main()
+{
+ test01();
+ return 0;
+}