RE: CONST Parameter passing, varying and *varsize

["Wilt, Charles" <CWilt@xxxxxxxxxxxx>]

> -----Original Message-----
> From: rpg400-l-bounces+cwilt=meaa.mea.com@xxxxxxxxxxxx 
> [mailto:rpg400-l-bounces+cwilt=meaa.mea.com@xxxxxxxxxxxx] On 
> Behalf Of Holden Tommy
> Sent: Friday, May 05, 2006 5:02 PM
> To: RPG programming on the AS400 / iSeries
> Subject: RE: CONST Parameter passing, varying and *varsize
> 
>  <snip>
> > >>Lastly, it is obvious that no temporary variables are needed when
> > Proc1a
> > >>calls Proc2. 
> > Why is it obvious?  The Proc2 doesn't know or care where the 
> > data comes
> > from, it will still act the same..
> 
> Since the parms match between Proc1a and Proc2, no manipulation would
> occur.  Temp variables might be used for the call to Proc1a, but the
> same address would be passed straight on into Proc2.
> 
> Make sense?
> </snip>
> 
> Sounds logical enough...but somehow I doubt this is truly the case,
> perhaps Barbara or another IBMer can tell us for sure...
> 
> It would seem that even though the parameters match. Proc2 
> can't assume
> that the string size (or variable size) hasn't changed since Proc1a
> received the value.  

Sure it can, that's what CONST tells it.



Charles Wilt