libstdc++-v3/testsuite/27_io/basic_filebuf/underflow/10096.cc

   1 // 2003-05-03  Petur Runolfsson  <peturr02@ru.is>
   2
   3 // Copyright (C) 2003-2014 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 // { dg-require-fileio "" }
  23
  24 #include <fstream>
  25 #include <string>
  26 #include <testsuite_hooks.h>
  27
  28 class MyTraits : public std::char_traits<char>
  29 {
  30 };
  31
  32 // libstdc++/10096
  33 void test01()
  34 {
  35   using namespace std;
  36
  37   const char* name = "filebuf_virtuals-1.txt";
  38
  39   string str;
  40   filebuf fb1;
  41   fb1.open(name, ios_base::in);
  42
  43   filebuf::int_type c1;
  44   while ((c1 = fb1.sbumpc()) != filebuf::traits_type::eof())
  45     str.push_back(filebuf::traits_type::to_char_type(c1));
  46   fb1.close();
  47
  48   basic_filebuf<char, MyTraits> fb;
  49   VERIFY( fb.sgetc() == MyTraits::eof() );
  50
  51   fb.open(name, ios_base::in);
  52   VERIFY( fb.is_open() );
  53
  54   for (string::iterator i = str.begin(); i != str.end(); ++i)
  55     {
  56       MyTraits::int_type c2 = fb.sbumpc();
  57       VERIFY( c2 != MyTraits::eof() );
  58       VERIFY( c2 == MyTraits::to_int_type(*i) );
  59     }
  60
  61   VERIFY( fb.sgetc() == MyTraits::eof() );
  62   fb.close();
  63   VERIFY( !fb.is_open() );
  64   VERIFY( fb.sgetc() == MyTraits::eof() );
  65 }
  66
  67 int main()
  68 {
  69   test01();
  70   return 0;
  71 }