libstdc++-v3/testsuite/27_io/basic_filebuf/overflow/char/9182-2.cc

   1 // 2001-05-21 Benjamin Kosnik  <bkoz@redhat.com>
   2
   3 // Copyright (C) 2001, 2002, 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 const char name_07[] = "filebuf_virtuals-7.txt"; // empty file, need to create
  28
  29 class errorcvt : public std::codecvt<char, char, mbstate_t>
  30 {
  31 protected:
  32   std::codecvt_base::result
  33   do_out(mbstate_t&, const char* from, const char*,
  34          const char*& from_next, char* to, char*,
  35          char*& to_next) const
  36   {
  37     from_next = from;
  38     to_next = to;
  39     return std::codecvt<char, char, mbstate_t>::error;
  40   }
  41
  42   virtual bool do_always_noconv() const throw()
  43   {
  44     return false;
  45   }
  46 };
  47
  48 // libstdc++/9182
  49 // basic_filebuf<>::sync and overflow do not write out any characters
  50 // if codecvt<>::out returns error
  51 void test14()
  52 {
  53   using namespace std;
  54   bool test = true;
  55
  56   locale loc =  locale::classic();
  57   loc = locale(loc, new errorcvt);
  58
  59   filebuf fbuf1;
  60   fbuf1.pubimbue(loc);
  61   fbuf1.pubsetbuf(0, 0);
  62   fbuf1.open(name_07, ios_base::out | ios_base::trunc);
  63   streamsize n = fbuf1.sputn("onne", 4);
  64   VERIFY( n == 0 );
  65   fbuf1.close();
  66 }
  67
  68 main()
  69 {
  70   test14();
  71   return 0;
  72 }