Re: {put,get}_user() side effects

[Andi Kleen]

Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> writes:

> On most (all?) architectures {get,put}_user() has side effects:
>
> #define put_user(x,ptr)                                                 \
>   __put_user_check((__typeof__(*(ptr)))(x),(ptr),sizeof(*(ptr)))

Neither typeof not sizeof are supposed to have side effects. If your
compiler generates them that's a compiler bug.

-Andi

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