libstdc++-v3/testsuite/27_io/basic_filebuf/sync/char/9182-1.cc

   1 // 2001-05-21 Benjamin Kosnik  <bkoz@redhat.com>
   2
   3 // Copyright (C) 2001, 2002, 2003, 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 const char name_07[] = "filebuf_virtuals-7.txt"; // empty file, need to create
  27
  28 class errorcvt : public std::codecvt<char, char, mbstate_t>
  29 {
  30 protected:
  31   std::codecvt_base::result
  32   do_out(mbstate_t&, const char* from, const char*,
  33          const char*& from_next, char* to, char*,
  34          char*& to_next) const
  35   {
  36     from_next = from;
  37     to_next = to;
  38     return std::codecvt<char, char, mbstate_t>::error;
  39   }
  40
  41   virtual bool do_always_noconv() const throw()
  42   {
  43     return false;
  44   }
  45 };
  46
  47 // libstdc++/9182
  48 // basic_filebuf<>::sync and overflow do not write out any characters
  49 // if codecvt<>::out returns error
  50 void test13()
  51 {
  52   using namespace std;
  53
  54   locale loc =  locale::classic();
  55   loc = locale(loc, new errorcvt);
  56
  57   filebuf fbuf1;
  58   fbuf1.pubimbue(loc);
  59   fbuf1.open(name_07, ios_base::out | ios_base::trunc);
  60
  61   try
  62     {
  63       fbuf1.sputn("ison", 4);
  64       fbuf1.pubsync();
  65       fbuf1.close();
  66     }
  67   catch (exception&)
  68     {
  69     }
  70 }
  71
  72 int main()
  73 {
  74   test13();
  75   return 0;
  76 }