1// Copyright (C) 2005, 2009 Free Software Foundation, Inc. 2// 3// This file is part of the GNU ISO C++ Library. This library is free 4// software; you can redistribute it and/or modify it under the 5// terms of the GNU General Public License as published by the 6// Free Software Foundation; either version 3, or (at your option) 7// any later version. 8 9// This library is distributed in the hope that it will be useful, 10// but WITHOUT ANY WARRANTY; without even the implied warranty of 11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12// GNU General Public License for more details. 13 14// You should have received a copy of the GNU General Public License along 15// with this library; see the file COPYING3. If not see 16// <http://www.gnu.org/licenses/>. 17 18 19// 27.6.2.3 class basic_ostream::sentry 20 21#include <ostream> 22#include <sstream> 23#include <testsuite_hooks.h> 24 25// libstdc++/9563 26struct buf : std::wstreambuf 27{ 28 std::wios *io_; 29 30 buf(std::wios *io) 31 : io_(io) { } 32 33 virtual int 34 sync() 35 { 36 io_->setstate (std::wios::failbit); 37 return 0; 38 } 39}; 40 41void 42test02() 43{ 44 bool test __attribute__((unused)) = true; 45 46 buf b(0); 47 std::wostream strm(&b); 48 49 buf tb(&strm); 50 std::wostream tied(&tb); 51 52 strm.tie(&tied); 53 std::wostream::sentry s(strm); 54 55 VERIFY( !s ); 56} 57 58int main() 59{ 60 test02(); 61 return 0; 62} 63