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<wchar_t, char, std::mbstate_t> 27{ 28protected: 29 virtual std::codecvt_base::result 30 do_out(std::mbstate_t&, const wchar_t* from, const wchar_t*, 31 const wchar_t*& from_next, char* to, char*, 32 char*& to_next) const 33 { 34 from_next = from; 35 to_next = to; 36 return std::codecvt_base::error; 37 } 38 39 virtual bool 40 do_always_noconv() const throw() 41 { return false; } 42}; 43 44// libstdc++/13858 45void test01() 46{ 47 using namespace std; 48 49 wfilebuf fb; 50 fb.pubimbue(locale(locale::classic(), new Cvt)); 51 fb.open("tmp_13858_wchar_t", ios_base::out); 52 53 try 54 { 55 fb.sputc(L'a'); 56 fb.sputc(L'b'); 57 fb.pubimbue(locale::classic()); 58 fb.sputc(L'c'); 59 fb.pubsync(); 60 fb.close(); 61 } 62 catch (std::exception&) 63 { 64 } 65} 66 67int main() 68{ 69 test01(); 70 return 0; 71} 72