--- /dev/null
+// 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/>.
+
+// 27.8.1.3 filebuf member functions
+// @require@ %-*.tst %-*.txt
+// @diff@ %-*.tst %-*.txt
+
+// various tests for filebuf::open() and filebuf::close() including
+// the non-portable functionality in the libstdc++-v3 IO library
+
+// { dg-require-fileio "" }
+
+#include <fstream>
+#include <testsuite_hooks.h>
+
+const char name_01[] = "filebuf_members-1.tst";
+const char name_02[] = "filebuf_members-1.txt";
+
+// Test member functions.
+void test_01()
+{
+ bool test __attribute__((unused)) = true;
+ const char* name_03 = "filebuf_members-3"; // empty file, need to create
+
+ std::filebuf fb_01; // in
+ std::filebuf fb_02; // out
+ std::filebuf fb_03; // in | out
+
+ // bool is_open()
+ VERIFY( !fb_01.is_open() );
+ VERIFY( !fb_02.is_open() );
+ VERIFY( !fb_03.is_open() );
+
+ // filebuf_type* open(const char* __s, ios_base::openmode __mode)
+ fb_01.open(name_01, std::ios_base::in | std::ios_base::ate);
+ VERIFY( fb_01.is_open() );
+
+ // Try to open two different files without closing the first:
+ // Should keep the old file attached, and disregard attempt to overthrow.
+ std::filebuf* f = fb_02.open(name_02, std::ios_base::in | std::ios_base::out
+ | std::ios_base::trunc);
+ VERIFY( f != NULL );
+ VERIFY( fb_02.is_open() );
+
+ f = fb_02.open(name_03, std::ios_base::in | std::ios_base::out);
+ VERIFY( f == NULL );
+ VERIFY( fb_02.is_open() );
+
+ fb_03.open(name_03, std::ios_base::out | std::ios_base::trunc);
+ VERIFY( fb_03.is_open() );
+}
+
+int
+main()
+{
+ test_01();
+ return 0;
+}
+
+