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// { dg-require-fork "" }

// { dg-require-mkfifo "" }

// Copyright (C) 2003, 2004, 2005, 2006, 2007, 2009

// 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/>.

// 27.8.1.4 Overridden virtual functions

#include <unistd.h>

#include <signal.h>

#include <fcntl.h>

#include <sys/types.h>

#include <sys/stat.h>

#include <fstream>

#include <cstdlib>

#include <testsuite_hooks.h>

// libstdc++/9533

void test_01()

{

  using namespace std;

  using namespace __gnu_test;

  bool test __attribute__((unused)) = true;

  const char* name = "tmp_fifo1";

  const int count = 10000;

  signal(SIGPIPE, SIG_IGN);

  unlink(name);

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

    {

      VERIFY( false );

    }

  int fval = fork();

  if (fval == -1)

    {

      unlink(name);

      VERIFY( false );

    }

  else if (fval == 0)

    {

      filebuf ofbuf;

      ofbuf.open(name, ios_base::in|ios_base::out);

      VERIFY( ofbuf.is_open() );

      sleep(1);

      for (int i = 0; i < count; ++i)

        ofbuf.sputc(i % 100);

      ofbuf.pubsync();

      sleep(1);

      ofbuf.close();

      exit(0);

    }

  filebuf ifbuf;

  ifbuf.open(name, ios_base::in);

  VERIFY( ifbuf.is_open() );

  for (int j = 0; j < count; ++j)

    {

      filebuf::int_type c1 = ifbuf.sbumpc();

      VERIFY( c1 == j % 100 );

    }

  filebuf::int_type c6 = ifbuf.sbumpc();

  VERIFY( c6 == filebuf::traits_type::eof() );

  sleep(2);

  ifbuf.close();

  unlink(name);

}

int

main()

{

  test_01();

  return 0;

}