libstdc++-v3/testsuite/27_io/basic_filebuf/overflow/wchar_t/13858.cc

   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, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  19 // USA.
  20
  21 // 27.8.1.4 Overridden virtual functions
  22
  23 #include <fstream>
  24 #include <locale>
  25
  26 class Cvt : public std::codecvt<wchar_t, char, std::mbstate_t>
  27 {
  28 protected:
  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
  45 void 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
  67 int main()
  68 {
  69   test01();
  70   return 0;
  71 }