I doubt you could make it happen with a 50 byte variable.
This was a few years back and only to do with return values, large
varchars as parameters were fine. I think the storage overflow problem
only arose when large return values(65K) were assigned to many different
variables ( the context was in mapping the elements of an xml document
to rpg variables ). I can't find Barbara's answer but something to do
with the compiler having to make a copy allocating the full length each
time and that it worked that way by design. Our practice is now to
return large varchars as parameters rather than as the return value ( at
least where there are a lot of them).
There being a finite size to the storage a program can use I guess the
are several ways a developer could blow this out so that there may not
be much left for certain invisible code portions at runtime. While
programs can now be bigger, it was certainly possible to compile a
simple program at the time which could demonstrate the exception.
Peter
-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Nathan Andelin
Sent: Thursday, 27 November 2008 11:22 a.m.
To: RPG programming on the AS400 / iSeries
Subject: Re: Calling C from RPG: what am I doing wrong?
Barbara eventually explained that this was an unavoidable consequence
of the code the compiler generates to handle varying length return
values, from which I concluded that such procedures were potentially a
bad practice.
Is this only with "large" return values? What about procedures that
return say a 50 byte description [trimmed]?
desc = codeDesc(code);
Nathan.
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