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[thirdparty/gcc.git] / libstdc++-v3 / testsuite / 27_io / basic_istream / tellg / wchar_t / 8348.cc

// Copyright (C) 2004-2021 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library.  This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.

// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3.  If not see
// <http://www.gnu.org/licenses/>.

// 27.6.1.3 unformatted input functions
// NB: ostream has a particular "seeks" category. Adopt this for istreams too.

#include <istream>
#include <sstream>
#include <testsuite_hooks.h>

// libstdc++/8348
void test06(void)
{
  using namespace std;
  wstring num1(L"555");

  // tellg
  {
    wistringstream iss(num1);
    iss.tellg();
    int asNum = 0;
    iss >> asNum;
    VERIFY( iss.eof() );
    VERIFY( !iss.fail() );
    iss.clear();
    iss.tellg();
    VERIFY( !iss.fail() );
  }

  // seekg
  {
    wistringstream iss(num1);
    iss.tellg();
    int asNum = 0;
    iss >> asNum;
    VERIFY( iss.eof() );
    VERIFY( !iss.fail() );
    iss.seekg(0, ios_base::beg);
    VERIFY( !iss.fail() );
  }

  // seekg
  {
    wistringstream iss(num1);
    wistream::pos_type pos1 = iss.tellg();
    int asNum = 0;
    iss >> asNum;
    VERIFY( iss.eof() );
    VERIFY( !iss.fail() );
    iss.seekg(pos1);
    VERIFY( !iss.fail() );
  }
}

int main()
{
  test06();
  return 0;
}