libstdc++-v3/testsuite/27_io/basic_filebuf/imbue/char/3.cc

   1 // 2003-05-13 Benjamin Kosnik  <bkoz@redhat.com>
   2
   3 // Copyright (C) 2003 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 #include <testsuite_hooks.h>
  26
  27 class state_codecvt : public std::codecvt<char, char, std::mbstate_t>
  28 {
  29 protected:
  30   int
  31   do_encoding() const throw()
  32   { return -1; }
  33 };
  34
  35 void test03()
  36 {
  37   using namespace std;
  38   bool test __attribute__((unused)) = true;
  39
  40   locale loc_s(locale::classic(), new state_codecvt);
  41   filebuf ob;
  42   ob.pubimbue(loc_s);
  43   VERIFY( ob.getloc() == loc_s );
  44
  45   // 2 "if encoding of current locale is state dependent" and
  46   // not at the beginning of the file fails...
  47   locale loc_c = locale::classic();
  48   locale ret = ob.pubimbue(loc_s);
  49   VERIFY( ob.getloc() == loc_s );
  50 }
  51
  52 int main()
  53 {
  54   test03();
  55   return 0;
  56 }