libstdc++-v3/testsuite/27_io/basic_istream/seekg/char/26211.cc

   1 // 2010-11-18  Paolo Carlini  <paolo.carlini@oracle.com>
   2
   3 // Copyright (C) 2010-2016 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 #include <istream>
  21 #include <sstream>
  22 #include <testsuite_hooks.h>
  23
  24 // libstdc++/26211
  25 void test01()
  26 {
  27   using namespace std;
  28   bool test __attribute__((unused)) = true;
  29
  30   typedef istringstream::pos_type pos_type;
  31
  32   istringstream iss("Duos for Doris");
  33   ostringstream oss;
  34
  35   const pos_type p0 = iss.tellg();
  36   VERIFY( p0 == pos_type(0) );
  37
  38   iss >> oss.rdbuf();
  39   VERIFY( iss.rdstate() == iss.eofbit );
  40
  41   iss.seekg(0, ios_base::beg);
  42   VERIFY( iss.good() );
  43
  44   iss.seekg(0, ios_base::beg);
  45   VERIFY( !iss.fail() );
  46   VERIFY( iss.tellg() == p0 );
  47
  48   iss >> oss.rdbuf();
  49   VERIFY( iss.rdstate() == iss.eofbit );
  50
  51   iss.seekg(p0);
  52   VERIFY( iss.good() );
  53
  54   iss.seekg(p0);
  55   VERIFY( !iss.fail() );
  56   VERIFY( iss.tellg() == p0 );
  57 }
  58
  59 int main()
  60 {
  61   test01();
  62   return 0;
  63 }