diff options
| author | Jiri Kosina <jkosina@suse.cz> | 2012-06-29 14:45:58 +0200 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2012-06-29 14:45:58 +0200 |
| commit | 59f91e5dd0504dc0ebfaa0b6f3a55e6931f96266 (patch) | |
| tree | b913718405d44a921905ac71044fbde410256865 /include/linux/bug.h | |
| parent | 57bdfdd80077addf518a9b90c4a66890efc4f70e (diff) | |
| parent | 89abfab133ef1f5902abafb744df72793213ac19 (diff) | |
Merge branch 'master' into for-next
Conflicts:
include/linux/mmzone.h
Synced with Linus' tree so that trivial patch can be applied
on top of up-to-date code properly.
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Diffstat (limited to 'include/linux/bug.h')
| -rw-r--r-- | include/linux/bug.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/bug.h b/include/linux/bug.h index 72961c39576a..aaac4bba6f5c 100644 --- a/include/linux/bug.h +++ b/include/linux/bug.h @@ -30,6 +30,13 @@ struct pt_regs; #define BUILD_BUG_ON_ZERO(e) (sizeof(struct { int:-!!(e); })) #define BUILD_BUG_ON_NULL(e) ((void *)sizeof(struct { int:-!!(e); })) +/* + * BUILD_BUG_ON_INVALID() permits the compiler to check the validity of the + * expression but avoids the generation of any code, even if that expression + * has side-effects. + */ +#define BUILD_BUG_ON_INVALID(e) ((void)(sizeof((__force long)(e)))) + /** * BUILD_BUG_ON - break compile if a condition is true. * @condition: the condition which the compiler should know is false. |