diff options
| author | Mateusz Guzik <mjg@FreeBSD.org> | 2021-07-15 14:01:02 +0000 |
|---|---|---|
| committer | Mateusz Guzik <mjg@FreeBSD.org> | 2021-07-21 16:59:58 +0000 |
| commit | bc28e9596c59b58fbbdbd9f97e42a0e0fbedb855 (patch) | |
| tree | d5dbe33922d0f83491579680ad41149f70974a06 | |
| parent | 6af8350df68206be18bc1ebee5e461ca20fb523e (diff) | |
| download | src-bc28e9596c59b58fbbdbd9f97e42a0e0fbedb855.tar.gz src-bc28e9596c59b58fbbdbd9f97e42a0e0fbedb855.zip | |
Add __diagused
This can be used for variables which are only used with either
INVARIANTS or WITNESS. Without any annotation they run into dead store
warnings from cc --analyze and always annotating with __unused may hide
bad vars when it should not.
Reviewed by: kib, markj
Sponsored by: Rubicon Communications, LLC ("Netgate")
Differential Revision: https://reviews.freebsd.org/D31185
(cherry picked from commit b9296725cf99696b48926270a553044522d6e344)
| -rw-r--r-- | sys/sys/systm.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/sys/sys/systm.h b/sys/sys/systm.h index d13379b0a12f..36d48fbf080d 100644 --- a/sys/sys/systm.h +++ b/sys/sys/systm.h @@ -625,6 +625,13 @@ void _gone_in_dev(device_t dev, int major, const char *msg); #endif #define gone_in(major, msg) __gone_ok(major, msg) _gone_in(major, msg) #define gone_in_dev(dev, major, msg) __gone_ok(major, msg) _gone_in_dev(dev, major, msg) + +#if defined(INVARIANTS) || defined(WITNESS) +#define __diagused +#else +#define __diagused __unused +#endif + #endif /* _KERNEL */ __NULLABILITY_PRAGMA_POP |