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[thirdparty/gcc.git] / libstdc++-v3 / testsuite / 27_io / basic_istream / peek / char / 6414.cc

// 2000-06-29 bkoz

// Copyright (C) 2000-2019 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.
// @require@ %-*.tst %-*.txt
// @diff@ %-*.tst %-*.txt

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

// fstreams
void test04(void)
{
  std::istream::pos_type pos01, pos02;
  const char str_lit01[] = "istream_seeks-1.txt";
  std::ifstream if01(str_lit01, std::ios_base::in | std::ios_base::out);
 
  // libstdc++/6414
  if01.seekg(0, std::ios_base::beg);
  pos01 = if01.tellg();
  if01.peek();
  pos02 = if01.tellg();
  VERIFY( pos02 == pos01 );
}

int main()
{
  test04();
  return 0;
}