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, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  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 // @require@ %-*.tst %-*.txt
  24 // @diff@ %-*.tst %-*.txt
  25
  26 #include <istream>
  27 #include <sstream>
  28 #include <fstream>
  29 #include <testsuite_hooks.h>
  30
  31 // libstdc++/8348
  32 void test06(void)
  33 {
  34   using namespace std;
  35   bool test __attribute__((unused)) = true;
  36   string num1("555");
  37
  38   // tellg
  39   {
  40     istringstream iss(num1);
  41     istream::pos_type pos1 = iss.tellg();
  42     int asNum = 0;
  43     iss >> asNum;
  44     VERIFY( test = iss.eof() );
  45     VERIFY( test = !iss.fail() );
  46     iss.tellg();
  47     VERIFY( test = !iss.fail() );
  48   }
  49
  50   // seekg
  51   {
  52     istringstream iss(num1);
  53     istream::pos_type pos1 = iss.tellg();
  54     int asNum = 0;
  55     iss >> asNum;
  56     VERIFY( test = iss.eof() );
  57     VERIFY( test = !iss.fail() );
  58     iss.seekg(0, ios_base::beg);
  59     VERIFY( test = !iss.fail() );
  60   }
  61
  62   // seekg
  63   {
  64     istringstream iss(num1);
  65     istream::pos_type pos1 = iss.tellg();
  66     int asNum = 0;
  67     iss >> asNum;
  68     VERIFY( test = iss.eof() );
  69     VERIFY( test = !iss.fail() );
  70     iss.seekg(pos1);
  71     VERIFY( test = !iss.fail() );
  72   }
  73 }
  74
  75 int main()
  76 {
  77   test06();
  78   return 0;
  79 }