libstdc++-v3/testsuite/27_io/basic_istream/tellg/char/8348.cc

   1 // 2000-06-29 bkoz
   2
   3 // Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006
   4 // Free Software Foundation
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 2, or (at your option)
  10 // any later version.
  11
  12 // This library is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16
  17 // You should have received a copy of the GNU General Public License along
  18 // with this library; see the file COPYING.  If not, write to the Free
  19 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  20 // USA.
  21
  22 // 27.6.1.3 unformatted input functions
  23 // NB: ostream has a particular "seeks" category. Adopt this for istreams too.
  24
  25 #include <istream>
  26 #include <sstream>
  27 #include <testsuite_hooks.h>
  28
  29 // libstdc++/8348
  30 void test06(void)
  31 {
  32   using namespace std;
  33   bool test __attribute__((unused)) = true;
  34   string num1("555");
  35
  36   // tellg
  37   {
  38     istringstream iss(num1);
  39     istream::pos_type pos1 = iss.tellg();
  40     int asNum = 0;
  41     iss >> asNum;
  42     VERIFY( test = iss.eof() );
  43     VERIFY( test = !iss.fail() );
  44     iss.tellg();
  45     VERIFY( test = !iss.fail() );
  46   }
  47
  48   // seekg
  49   {
  50     istringstream iss(num1);
  51     istream::pos_type pos1 = iss.tellg();
  52     int asNum = 0;
  53     iss >> asNum;
  54     VERIFY( test = iss.eof() );
  55     VERIFY( test = !iss.fail() );
  56     iss.seekg(0, ios_base::beg);
  57     VERIFY( test = !iss.fail() );
  58   }
  59
  60   // seekg
  61   {
  62     istringstream iss(num1);
  63     istream::pos_type pos1 = iss.tellg();
  64     int asNum = 0;
  65     iss >> asNum;
  66     VERIFY( test = iss.eof() );
  67     VERIFY( test = !iss.fail() );
  68     iss.seekg(pos1);
  69     VERIFY( test = !iss.fail() );
  70   }
  71 }
  72
  73 int main()
  74 {
  75   test06();
  76   return 0;
  77 }