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> Due to a misplaced parenthesis...

I know this isn't the (main) take away message, but it does make me feel a little better about some errors I've made in the past to know that even heavily vetted code can have these types of errors.

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I don't know if this code would qualify as "heavily vetted." Thor Lancelot Simon wrote it himself and imported it himself into the tree for NetBSD v6 and onwards. Probably hasn't seen that many eyes for review.

I just assumed kernel code would have at least someone else looking over it before it's merged in.

Maybe it does, but they won't be looking for misplaced parens.

Because in kernel mode it's impossible to make (and subsequently gloss over) simple mistakes? This hasn't been my experience.

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