FreeBSD/Linux Kernel Cross Reference
sys/sys/null.h
1 /* $NetBSD: null.h,v 1.6 2003/10/24 21:45:09 enami Exp $ */
2
3 #ifndef NULL
4 #if !defined(__GNUG__) || __GNUG__ < 2 || (__GNUG__ == 2 && __GNUC_MINOR__ < 90)
5 #if !defined(__cplusplus)
6 #define NULL (void *)0
7 #else
8 #define NULL 0
9 #endif /* !__cplusplus */
10 #else
11 #define NULL __null
12 #endif
13 #endif
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