diff options
| author | Marc Espie <espie@cvs.openbsd.org> | 1999-06-11 22:47:49 +0000 |
|---|---|---|
| committer | Marc Espie <espie@cvs.openbsd.org> | 1999-06-11 22:47:49 +0000 |
| commit | 25018aae1e7a8c2288f61c32416e8d3c083a479f (patch) | |
| tree | 1c6ccf39bfe7ab1508da3896c13a7920df0f267b /include/stddef.h | |
| parent | 5d30b9dd685cc89d485c7ec3f358e239e00bfe45 (diff) | |
Define NULL to be __null for C++: better quality of implementation.
__null is a magic constant of integral type that converts to a null pointer
as should be, but warns for ambiguity when used to resolved an overload
between an integral type and a pointer type.
Diffstat (limited to 'include/stddef.h')
| -rw-r--r-- | include/stddef.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/include/stddef.h b/include/stddef.h index 487528c6228..0fcca4fb5a6 100644 --- a/include/stddef.h +++ b/include/stddef.h @@ -1,4 +1,4 @@ -/* $OpenBSD: stddef.h,v 1.2 1997/09/21 10:45:52 niklas Exp $ */ +/* $OpenBSD: stddef.h,v 1.3 1999/06/11 22:47:48 espie Exp $ */ /* $NetBSD: stddef.h,v 1.4 1994/10/26 00:56:26 cgd Exp $ */ /*- @@ -54,8 +54,12 @@ typedef _BSD_WCHAR_T_ wchar_t; #endif #ifndef NULL +#ifdef __GNUG__ +#define NULL __null +#else #define NULL 0 #endif +#endif #define offsetof(type, member) ((size_t)(&((type *)0)->member)) |