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// { 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 <unistd.h>

#include <signal.h>

#include <fcntl.h>

#include <sys/types.h>

#include <sys/stat.h>

#include <testsuite_hooks.h>

// libstdc++/9507

void test_06()

{

  using namespace __gnu_test;

  bool test __attribute__((unused)) = true;

  const char* name = "tmp_fifo2";

  signal(SIGPIPE, SIG_IGN);

  unlink(name);

  mkfifo(name, S_IRWXU);

  std::filebuf fbuf;

  // The use of ios_base::ate implies an attempt to seek on the file

  // descriptor.  The seek will fail.  Thus, at the OS level, this

  // call to "fbuf.open" will result in a call to "open" (which will

  // succeed), a call to "lseek" (which will fail), and, finally, a

  // call to "close" (which will succeed).  Thus, after this call, the

  // file should be closed.

  std::filebuf* r = fbuf.open(name,

                              std::ios_base::in

                              | std::ios_base::out

                              | std::ios_base::ate);

  if (r == NULL)

    VERIFY( !fbuf.is_open() );

  else

    VERIFY( fbuf.is_open() );

}

int

main()

{

  test_06();

  return 0;

}