1/* Copyright (C) 2010-2025 Free Software Foundation, Inc.
 2   This file is part of the GNU C Library.
 3
 4   The GNU C Library is free software; you can redistribute it and/or
 5   modify it under the terms of the GNU Lesser General Public
 6   License as published by the Free Software Foundation; either
 7   version 2.1 of the License, or (at your option) any later version.
 8
 9   The GNU C Library is distributed in the hope that it will be useful,
10   but WITHOUT ANY WARRANTY; without even the implied warranty of
11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12   Lesser General Public License for more details.
13
14   You should have received a copy of the GNU Lesser General Public
15   License along with the GNU C Library.  If not, see
16   <https://www.gnu.org/licenses/>.  */
17
18#ifndef _SEMAPHORE_H
19# error "Never use <bits/semaphore.h> directly; include <semaphore.h> instead."
20#endif
21
22
23#define __SIZEOF_SEM_T	16
24
25
26/* Value returned if `sem_open' failed.  */
27#define SEM_FAILED      ((sem_t *) 0)
28
29
30typedef union
31{
32  char __size[__SIZEOF_SEM_T];
33  long int __align __attribute__ ((__aligned__ (4)));
34} sem_t;