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    SubjectRe: [PATCH] ubi: kill homegrown endian macros
    Date
    >> It's not the compiler who decides -- struct layout is
    >> dictated by the ABI you're compiling for.
    >
    > This is true in the case of externally-visible stuff. I think the
    > compiler is permitted to violate the ABI for purely unit-internal
    > things
    > if it makes sense though, isn't it?

    Sure. It isn't "violating the ABI" in that case though,
    to be perfectly clear.

    > Besides, in the case of the Linux kernel the ABI in question could be
    > one of many. It could even be a new one which was added a couple of
    > weeks ago, and which I had no _chance_ of considering.

    Of course.

    > The rule stands -- empirical testing of what the compiler will do isn't
    > usually the right answer.

    It is *never* the right answer. You should always write
    your code so that it will do the right thing no matter
    what the compiler decides to do to it.


    Segher

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