gomp-20050608-branch/libstdc++-v3/testsuite/27_io/basic_filebuf/underflow/char/9027.cc

   1 // 2003-05-03  Petur Runolfsson  <peturr02@ru.is>
   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, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  19 // USA.
  20
  21 // 27.8.1.4 Overridden virtual functions
  22
  23 #include <locale>
  24 #include <fstream>
  25 #include <cctype>
  26 #include <testsuite_hooks.h>
  27
  28 class Cvt_to_upper : public std::codecvt<char, char, std::mbstate_t>
  29 {
  30   typedef std::codecvt<char, char, std::mbstate_t> Base;
  31
  32 public:
  33   explicit Cvt_to_upper(std::size_t refs = 0)
  34   : Base(refs)
  35   { }
  36
  37 protected:
  38   virtual result
  39   do_in(state_type&,
  40         const extern_type* from, const extern_type* from_end,
  41         const extern_type*& from_next,
  42         intern_type* to, intern_type* to_end,
  43         intern_type*& to_next) const
  44   {
  45     while (from < from_end && to < to_end)
  46       *to++ = std::toupper(*from++);
  47
  48     to_next = to;
  49     from_next = from;
  50     return from == from_end ? ok : partial;
  51   }
  52
  53   virtual bool
  54   do_always_noconv() const throw()
  55   {
  56     return false;
  57   }
  58 };
  59
  60 // libstdc++/9027
  61 void test01()
  62 {
  63   using namespace std;
  64
  65   bool test __attribute__((unused)) = true;
  66   const char* name = "filebuf_virtuals-1.txt";
  67   locale loc (locale::classic(), new Cvt_to_upper);
  68
  69   filebuf fbin;
  70   fbin.pubimbue(loc);
  71   fbin.open(name, ios_base::in);
  72
  73   int c;
  74   while ((c = fbin.sbumpc()) != EOF)
  75     {
  76       VERIFY( !islower(c) );
  77     }
  78
  79   fbin.close();
  80 }
  81
  82 int main()
  83 {
  84   test01();
  85   return 0;
  86 }