1// 2004-02-14 Petur Runolfsson <peturr02@ru.is> 2 3// Copyright (C) 2004, 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// 27.8.1.4 Overridden virtual functions 21 22#include <fstream> 23#include <locale> 24 25class Cvt : public std::codecvt<wchar_t, char, std::mbstate_t> 26{ 27protected: 28 virtual std::codecvt_base::result 29 do_out(std::mbstate_t&, const wchar_t* from, const wchar_t*, 30 const wchar_t*& from_next, char* to, char*, 31 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 wfilebuf fb; 49 fb.pubimbue(locale(locale::classic(), new Cvt)); 50 fb.open("tmp_13858_wchar_t", ios_base::out); 51 52 try 53 { 54 fb.sputc(L'a'); 55 fb.sputc(L'b'); 56 fb.pubimbue(locale::classic()); 57 fb.sputc(L'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