On Thu, Nov 26, 2020 at 4:28 PM Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> wrote: > > The maintainer is not necessarily the owner/author of the code, and > thus may not know the intent of the code. Agreed, I was not blaming maintainers -- just trying to point out that the problem is there :-) In those cases, it is still very useful: we add the `fallthrough` and a comment saying `FIXME: fallthrough intended? Figure this out...`. Thus a previous unknown unknown is now a known unknown. And no new unknown unknowns will be introduced since we enabled the warning globally. > BTW, you cannot mindlessly fix the latter, as you cannot know if > "(a == b)" or "((a = b))" was intended, without understanding the code > (and the (possibly unavailable) data sheet, and the hardware, ...). That's right, I was referring to the cases where the compiler saves someone time from a typo they just made. Cheers, Miguel