> > I used C in multi platforms many years and never
> encountered this unspecified
>
> It is not unspecified behavior.
>
> It is specified as undefined behavior.
>
> > I hope GCC can be consistent with the others. Maybe
> that's a better way.
>
> I do not think that is a better way.
>
> I think it is better to not rely on the behavior of a
> particular compiler
> for language undefined behavior.
>
> It would be nice if the compiler could ALWAYS warn about
> code that has
> undefined behavior.
>
Right! It is better to not rely on the behavior of a
particular compiler. My source have not consider the
order of evaluation. But however, undefined behavior
is still a behavior. My mean is better to be compatible
with most others.
--horde
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