libstdc++-v3/testsuite/27_io/basic_filebuf/imbue/char/13171-4.cc

   1 // Copyright (C) 2003 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  17 // USA.
  18
  19 // 27.8.1.4 Overridden virtual functions
  20
  21 #include <fstream>
  22 #include <locale>
  23 #include <testsuite_hooks.h>
  24
  25 class Cvt : public std::codecvt<char, char, std::mbstate_t>
  26 {
  27 protected:
  28   int do_encoding() const throw()
  29   { return -1; }
  30
  31   bool do_always_noconv() const throw()
  32   { return false; }
  33 };
  34
  35 // libstdc++/13171
  36 int test01()
  37 {
  38   bool test __attribute__((unused)) = true;
  39   using namespace std;
  40
  41   filebuf fb;
  42   fb.pubimbue(locale(__gnu_test::try_named_locale("en_US"),
  43                      new Cvt));
  44   fb.open("tmp_13171-4", ios_base::out);
  45   fb.pubimbue(__gnu_test::try_named_locale("fr_FR"));
  46   fb.sputc('N');
  47   fb.pubsync();
  48   fb.close();
  49 }
  50
  51 int main()
  52 {
  53   test01();
  54 }