--- /dev/null
+// 1999-05-21 bkoz
+// 2000-05-21 Benjamin Kosnik <bkoz@redhat.com>
+// 2001-01-17 Loren J. Rittle <ljrittle@acm.org>
+
+// Copyright (C) 1999, 2000, 2001, 2003, 2009 Free Software Foundation
+//
+// 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/>.
+
+// 27.4.2.4 ios_base static members
+// @require@ %-*.tst
+// @diff@ %-*.tst %-*.txt
+
+#include <cstdio>
+#include <sstream>
+#include <iostream>
+#include <testsuite_hooks.h>
+
+// N.B. Once we have called sync_with_stdio(false), we can never go back.
+
+void test02()
+{
+ bool test __attribute__((unused)) = true;
+
+ std::stringbuf strbuf01;
+ std::ios ios01(&strbuf01);
+
+ // 1: basic invocation
+ VERIFY( ios01.sync_with_stdio() );
+ VERIFY( ios01.sync_with_stdio(false) ); //returns previous state
+
+ // 2: need to test interleaving of C and C++ io on a file object.
+ VERIFY( std::cout.good() );
+ VERIFY( !std::cout.sync_with_stdio(0) );
+ VERIFY( std::cout.good() );
+ VERIFY( !std::cout.sync_with_stdio(0) );
+ VERIFY( std::cout.good() );
+}
+
+int main(void)
+{
+ test02();
+ return 0;
+}