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Don peril sensitive sunglasses and set NULL to an actual pointer type,

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but *only* for the kernel.  We can do this because the kernel is not a
standard C application environment.  This would have stopped the recent
mtx_* arg NULL/MTX_DEF mixups from going unnoticed for so long.
This commit is contained in:
Peter Wemm 2003-12-23 02:34:25 +00:00
parent 8070ad52a1
commit 98ef6ed422
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=123739
1 changed files with 4 additions and 0 deletions
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4
sys/sys/_null.h
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@ -28,10 +28,14 @@
#ifndef NULL
#ifdef _KERNEL
#define NULL (void *)0
#else
#if defined(__LP64__) || defined(__amd64__)
#define NULL 0L
#else
#define NULL 0
#endif
#endif /* _KERNEL */
#endif