1// Copyright (C) 2005 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 2, 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 COPYING. If not, write to the Free 16// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 17// USA. 18 19// As a special exception, you may use this file as part of a free software 20// library without restriction. Specifically, if other files instantiate 21// templates or use macros or inline functions from this file, or you compile 22// this file and link it with other files to produce an executable, this 23// file does not by itself cause the resulting executable to be covered by 24// the GNU General Public License. This exception does not however 25// invalidate any other reasons why the executable file might be covered by 26// the GNU General Public License. 27 28// 27.6.2.3 class basic_ostream::sentry 29 30#include <ostream> 31#include <sstream> 32#include <testsuite_hooks.h> 33 34// libstdc++/9563 35struct buf : std::wstreambuf 36{ 37 std::wios *io_; 38 39 buf(std::wios *io) 40 : io_(io) { } 41 42 virtual int 43 sync() 44 { 45 io_->setstate (std::wios::failbit); 46 return 0; 47 } 48}; 49 50void 51test02() 52{ 53 bool test __attribute__((unused)) = true; 54 55 buf b(0); 56 std::wostream strm(&b); 57 58 buf tb(&strm); 59 std::wostream tied(&tb); 60 61 strm.tie(&tied); 62 std::wostream::sentry s(strm); 63 64 VERIFY( !s ); 65} 66 67int main() 68{ 69 test02(); 70 return 0; 71} 72