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

   1 // 2000-06-29 bkoz
   2
   3 // Copyright (C) 2000, 2001, 2002, 2003 Free Software Foundation
   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 // 27.6.1.3 unformatted input functions
  22 // NB: ostream has a particular "seeks" category. Adopt this for istreams too.
  23
  24 #include <istream>
  25 #include <sstream>
  26 #include <testsuite_hooks.h>
  27
  28 // libstdc++/8348
  29 void test06(void)
  30 {
  31   using namespace std;
  32   bool test __attribute__((unused)) = true;
  33   string num1("555");
  34
  35   // tellg
  36   {
  37     istringstream iss(num1);
  38     istream::pos_type pos1 = iss.tellg();
  39     int asNum = 0;
  40     iss >> asNum;
  41     VERIFY( test = iss.eof() );
  42     VERIFY( test = !iss.fail() );
  43     iss.tellg();
  44     VERIFY( test = !iss.fail() );
  45   }
  46
  47   // seekg
  48   {
  49     istringstream iss(num1);
  50     istream::pos_type pos1 = iss.tellg();
  51     int asNum = 0;
  52     iss >> asNum;
  53     VERIFY( test = iss.eof() );
  54     VERIFY( test = !iss.fail() );
  55     iss.seekg(0, ios_base::beg);
  56     VERIFY( test = !iss.fail() );
  57   }
  58
  59   // seekg
  60   {
  61     istringstream iss(num1);
  62     istream::pos_type pos1 = iss.tellg();
  63     int asNum = 0;
  64     iss >> asNum;
  65     VERIFY( test = iss.eof() );
  66     VERIFY( test = !iss.fail() );
  67     iss.seekg(pos1);
  68     VERIFY( test = !iss.fail() );
  69   }
  70 }
  71
  72 int main()
  73 {
  74   test06();
  75   return 0;
  76 }