text: /* Copyright (C) 2002-2017 Free Software Foundation, Inc.
     This file is part of the GNU C Library.
  
     The GNU C Library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Lesser General Public
     License as published by the Free Software Foundation; either
     version 2.1 of the License, or (at your option) any later version.
  
     The GNU C 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
     Lesser General Public License for more details.
  
     You should have received a copy of the GNU Lesser General Public
     License along with the GNU C Library.  If not, see
     <http://www.gnu.org/licenses/>.  */
  
  #ifndef _SEMAPHORE_H
  # error "Never use <bits/semaphore.h> directly; include <semaphore.h> instead."
  #endif
  
  #define __SIZEOF_SEM_T	16
  
  /* Value returned if `sem_open' failed.  */
  #define SEM_FAILED      ((sem_t *) 0)
  
  typedef union
  {
    char __size[__SIZEOF_SEM_T];
    long int __align;
  } sem_t;
  