gcc/libstdc++-v3/config/io/c_io_stdio.h

// Underlying io library details -*- C++ -*-

// Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006
// 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.

// As a special exception, you may use this file as part of a free software
// library without restriction.  Specifically, if other files instantiate
// templates or use macros or inline functions from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License.  This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.

/** @file c++io.h
 *  This is an internal header file, included by other library headers.
 *  You should not attempt to use it directly.
 */

// c_io_stdio.h - Defines for using "C" stdio.h

#ifndef _C_IO_STDIO_H
#define _C_IO_STDIO_H 1

#include <cstdio>
#include <cstddef>
#include <bits/gthr.h>

_GLIBCXX_BEGIN_NAMESPACE(std)

  typedef __gthread_mutex_t __c_lock;

  // for basic_file.h
  typedef FILE __c_file;

_GLIBCXX_END_NAMESPACE

#endif