Re[2]: Prototyping printf()

> >>Now test "pointer".  It won't be valid.
> >>
> >>(Actually, there is no guarantee that this will fail, but there
> >>is also no guarantee that it will work.  It may depend on the
> >>alignment of charfld, and on the way RPG chooses to copy the
> >>data on the evals.)
> >
> >Sigh, and i thought it had to be invalid all the time, due to "the extra
> >bit" Frank Soltis is talking about in his "Inside the AS/400"...
> >
> >Seems to be a fairy tale... *sniff*
>
>Anton, it's not a fairy tale.  Whether charfld contains a valid
>pointer or not depends still depends on the pointer tag being set.
>It's just that some operations cause the pointer tags to be
>set even if the variable isn't explicitly declared as containing
>a pointer.


Thanks a lot, Barbara,

for restoring my view of the world! :-)

I think i got it now. The extra flag is in the storage, too, and laying 
some structure over this storage mustn't necessarily produce an invalid 
pointer. Hmmm. I think, you know what you're doing (and are no relatives of 
Sledge Hammer, if you know the TV series :-)

Thanks!



Mit freundlichen Grüssen / best regards

Anton Gombkötö

e-mail Office   :       mailto:Anton.Gombkoetoe@avenum.com
Homepage        :       http://www.avenum.com

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