4 -0700 [PATCH] bogus BUILD_BUG_ON() in bpa_iommu BUILD_BUG_ON(1) is asking for trouble (and getting it) when used in that manner - dead code elimination happens after we parse it and invalid type is invalid type, dead code or not. It might be version-dependent, but at least 4.0.1 refuses to accept that. Signed-off-by: Al Viro Signed-off-by: Linus Torvalds ±aŹ