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// { dg-require-fork "" }

// { dg-require-mkfifo "" }

// Copyright (C) 2001, 2002, 2003, 2005 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 2, 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 COPYING.  If not, write to the Free

// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,

// USA.

// 27.8.1.3 filebuf member functions

// @require@ %-*.tst %-*.txt

// @diff@ %-*.tst %-*.txt

// various tests for filebuf::open() and filebuf::close() including

// the non-portable functionality in the libstdc++-v3 IO library

#include <fstream>

#include <iostream>

#include <unistd.h>

#include <signal.h>

#include <fcntl.h>

#include <sys/types.h>

#include <sys/stat.h>

#include <testsuite_hooks.h>

// libstdc++/2913, libstdc++/4879

// John Fardo  <jfardo@laurelnetworks.com>, Brad Garcia <garsh@attbi.com>

void

test_04()

{

  using namespace __gnu_test;

  bool test __attribute__((unused)) = true;

  const char* name = "tmp_fifo1";

  semaphore s1, s2;

  signal(SIGPIPE, SIG_IGN);

  unlink(name);

  if (0 != mkfifo(name, S_IRWXU))

    {

      std::cerr << "failed to create fifo" << std::endl;

      exit(-1);

    }

  int fval = fork();

  if (fval == -1)

    {

      std::cerr << "failed to fork" << std::endl;

      unlink(name);

      exit(-1);

    }

  else if (fval == 0)

    {

      std::ifstream ifs(name);

      s1.wait ();

      ifs.close();

      s2.signal ();

      exit(0);

    }

  std::ofstream ofs(name);

  s1.signal ();

  s2.wait ();

  ofs.put('t');

  /*

   * ISO/IED 14882:1998(E) 27.8.1.10.4

   *

   * void close();

   *

   * Effects:  Calls rdbuf()->close() and, if that function fails

   * (returns a null pointer), calls setstate(failbit)...

   */

  ofs.close();

  if (!(ofs.rdstate() & std::ios::failbit))

    {

      test = false;

      VERIFY( test );

      unlink(name);

      exit(-1);

    }

  unlink(name);

}

int

main()

{

  test_04();

  return 0;

}