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// { dg-require-namedlocale "" }

// { 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 <fstream>

#include <locale>

#include <cstdlib>

#include <sys/types.h>

#include <sys/stat.h>

// No asserts, avoid leaking the semaphores if a VERIFY fails.

#undef _GLIBCXX_ASSERT

#include <testsuite_hooks.h>

// libstdc++/13171

bool test01()

{

  bool test __attribute__((unused)) = true;

  using namespace std;

  using namespace __gnu_test;

  locale loc_fr(locale("fr_FR"));

  locale loc_en(locale("en_US"));

  const char* name = "tmp_fifo_13171-2";

  unlink(name);

  mkfifo(name, S_IRWXU);

  semaphore s1, s2;

  int child = fork();

  if (child == 0)

    {

      filebuf fb;

      fb.open(name, ios_base::out);

      fb.sputc('S');

      fb.pubsync();

      s1.signal();

      s2.wait();

      fb.close();

      exit(0);

    }

  filebuf fb;

  fb.pubimbue(loc_fr);

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

  s1.wait();

  VERIFY( fb.is_open() );

  fb.pubimbue(loc_en);

  filebuf::int_type c = fb.sgetc();

  fb.close();

  VERIFY( c == 'S' );

  s2.signal();

  return test;

}

int main()

{

  return !test01();

}