diff options
| author | Jonathan Gray <jsg@cvs.openbsd.org> | 2009-09-22 21:40:03 +0000 |
|---|---|---|
| committer | Jonathan Gray <jsg@cvs.openbsd.org> | 2009-09-22 21:40:03 +0000 |
| commit | 516ffc77ed11b859ee38796488a8b3bb726d11a8 (patch) | |
| tree | ddde9798c3ead9b5dcaf0039d13a618bc2c79d50 | |
| parent | 1913787ec112f00d5af912a4028963368bb87363 (diff) | |
Use __builtin_offsetof for offsetof definition on gcc >= 4
This is required as gcc grows ever more pedantic with old age
and cavorts with standards bodies that like to create paradoxes.
ok kettenis@ miod@ millert@ espie@
| -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 a2ec869e267..9eb1875eb04 100644 --- a/include/stddef.h +++ b/include/stddef.h @@ -1,4 +1,4 @@ -/* $OpenBSD: stddef.h,v 1.9 2006/01/06 18:53:04 millert Exp $ */ +/* $OpenBSD: stddef.h,v 1.10 2009/09/22 21:40:02 jsg Exp $ */ /* $NetBSD: stddef.h,v 1.4 1994/10/26 00:56:26 cgd Exp $ */ /*- @@ -72,6 +72,10 @@ typedef __mbstate_t mbstate_t; #endif #endif +#if __GNUC_PREREQ__(4, 0) +#define offsetof(type, member) __builtin_offsetof(type, member) +#else #define offsetof(type, member) ((size_t)(&((type *)0)->member)) +#endif #endif /* _STDDEF_H_ */ |