1// 2004-02-14 Petur Runolfsson <peturr02@ru.is> 2 3// Copyright (C) 2004 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 2, 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 COPYING. If not, write to the Free 18// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 19// USA. 20 21// 27.8.1.4 Overridden virtual functions 22 23#include <fstream> 24#include <locale> 25 26class Cvt : public std::codecvt<char, char, std::mbstate_t> 27{ 28protected: 29 virtual std::codecvt_base::result 30 do_out(std::mbstate_t&, const char* from, const char*, 31 const char*& from_next, char* to, char*, char*& to_next) const 32 { 33 from_next = from; 34 to_next = to; 35 return std::codecvt_base::error; 36 } 37 38 virtual bool 39 do_always_noconv() const throw() 40 { return false; } 41}; 42 43// libstdc++/13858 44void test01() 45{ 46 using namespace std; 47 48 filebuf fb; 49 fb.pubimbue(locale(locale::classic(), new Cvt)); 50 fb.open("tmp_13858_char", ios_base::out); 51 52 try 53 { 54 fb.sputc('a'); 55 fb.sputc('b'); 56 fb.pubimbue(locale::classic()); 57 fb.sputc('c'); 58 fb.pubsync(); 59 fb.close(); 60 } 61 catch (std::exception&) 62 { 63 } 64} 65 66int main() 67{ 68 test01(); 69 return 0; 70} 71