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

[Geert Uytterhoeven]

On Tue, 6 Apr 2004, Andi Kleen wrote:
> 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.

>From a simple compile test, you seem to be right... Weird, since it does expand
to 3 times 'pIndex++', but pIndex is incremented only once.

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
							    -- Linus Torvalds
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