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

   1 // 2003-05-03  Petur Runolfsson  <peturr02@ru.is>
   2
   3 // Copyright (C) 2003-2013 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 3, 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 COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20 // 27.8.1.4 Overridden virtual functions
  21
  22 #include <locale>
  23 #include <fstream>
  24 #include <cctype>
  25 #include <testsuite_hooks.h>
  26
  27 class Cvt_to_upper : public std::codecvt<char, char, std::mbstate_t>
  28 {
  29   typedef std::codecvt<char, char, std::mbstate_t> Base;
  30
  31 public:
  32   explicit Cvt_to_upper(std::size_t refs = 0)
  33   : Base(refs)
  34   { }
  35
  36 protected:
  37   virtual result
  38   do_in(state_type&,
  39         const extern_type* from, const extern_type* from_end,
  40         const extern_type*& from_next,
  41         intern_type* to, intern_type* to_end,
  42         intern_type*& to_next) const
  43   {
  44     while (from < from_end && to < to_end)
  45       *to++ = std::toupper(*from++);
  46
  47     to_next = to;
  48     from_next = from;
  49     return from == from_end ? ok : partial;
  50   }
  51
  52   virtual bool
  53   do_always_noconv() const throw()
  54   {
  55     return false;
  56   }
  57 };
  58
  59 // libstdc++/9027
  60 void test01()
  61 {
  62   using namespace std;
  63
  64   bool test __attribute__((unused)) = true;
  65   const char* name = "filebuf_virtuals-1.txt";
  66   locale loc (locale::classic(), new Cvt_to_upper);
  67
  68   filebuf fbin;
  69   fbin.pubimbue(loc);
  70   fbin.open(name, ios_base::in);
  71
  72   int c;
  73   while ((c = fbin.sbumpc()) != EOF)
  74     {
  75       VERIFY( !islower(c) );
  76     }
  77
  78   fbin.close();
  79 }
  80
  81 int main()
  82 {
  83   test01();
  84   return 0;
  85 }