1// 2003-02-06 Paolo Carlini <pcarlini@unitus.it> 2 3// Copyright (C) 2003, 2005, 2009 Free Software Foundation, Inc. 4// 5// This file is part of the GNU ISO C++ Library. This library is free 6// software; you can redistribute it and/or modify it under the 7// terms of the GNU General Public License as published by the 8// Free Software Foundation; either version 3, or (at your option) 9// any later version. 10 11// This library is distributed in the hope that it will be useful, 12// but WITHOUT ANY WARRANTY; without even the implied warranty of 13// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14// GNU General Public License for more details. 15 16// You should have received a copy of the GNU General Public License along 17// with this library; see the file COPYING3. If not see 18// <http://www.gnu.org/licenses/>. 19 20 21// 27.6.2.3 class basic_ostream::sentry 22 23#include <ostream> 24#include <sstream> 25#include <testsuite_hooks.h> 26 27// libstdc++/9563 28struct buf : std::streambuf 29{ 30 std::ios *io_; 31 32 buf(std::ios *io) 33 : io_(io) { } 34 35 virtual int 36 sync() 37 { 38 io_->setstate (std::ios::failbit); 39 return 0; 40 } 41}; 42 43void 44test02() 45{ 46 bool test __attribute__((unused)) = true; 47 48 buf b(0); 49 std::ostream strm(&b); 50 51 buf tb(&strm); 52 std::ostream tied(&tb); 53 54 strm.tie(&tied); 55 std::ostream::sentry s(strm); 56 57 VERIFY( !s ); 58} 59 60int main() 61{ 62 test02(); 63 return 0; 64} 65