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authorKalle Valo <kvalo@qca.qualcomm.com>2012-06-14 14:20:18 +0300
committerKalle Valo <kvalo@qca.qualcomm.com>2012-06-14 14:44:49 +0300
commitd987dd137bac8dca9b0015763d3106f48bb8a596 (patch)
treeef887505b3c904c548d58ec9bb6f4970a0877042 /include/linux/bug.h
parentc85251f8562095cd6fd63ae786354283c5318303 (diff)
parent211c17aaee644bb808fbdeef547ac99db92c01ed (diff)
Merge remote branch 'wireless-next/master' into ath6kl-next
Conflicts: drivers/net/wireless/ath/ath6kl/cfg80211.c
Diffstat (limited to 'include/linux/bug.h')
-rw-r--r--include/linux/bug.h7
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.