alias question
xorbe
xorbe@yahoo.com
Fri Feb 18 10:32:00 GMT 2011
> > If I have a char array, and it's
> always written by the char array, can it
> > be always reliably read by any combination of
> short/int/long pointers?
> >
> > As I understand, the compiler will see byte writes for
> all types, so
> > readind shoulg be fine without violating any strict
> alias rules. Just
> > can't write the array by any other type than char[]
> access. Right? -Jason
>
> No. You can access anything only as its declared type
> or character type;
> an array of char thus can be accessed as char only.
>
> Segher
However, what I said is walking the fine line of following
that rule. I have several overlapping read-only types, BUT
they are only written as char. Hence, they'll always resolve
to the correct value. I haven't been able to construct any
code which fails to work yet. If a char write precedes a
type's access to the same location, then it will be seen.
As far as I can tell, that basic rule is followed here!
Jason
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