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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;
}