1 /*	$OpenBSD: _null.h,v 1.2 2016/09/09 22:07:58 millert Exp $	*/
2 
3 /*
4  * Written by Todd C. Miller, September 9, 2016
5  * Public domain.
6  */
7 
8 #ifndef NULL
9 #if !defined(__cplusplus)
10 #define	NULL	((void *)0)
11 #elif __cplusplus >= 201103L
12 #define	NULL	nullptr
13 #elif defined(__GNUG__)
14 #define	NULL	__null
15 #else
16 #define	NULL	0L
17 #endif
18 #endif
19