Re: Prototype in RPG/ILE

["Peter Dow" <pcdow@xxxxxxxxx>]

Hi Jon,

"Prototyping is critical" but that only helps at compile time. What I
understood (perhaps incorrectly) from TFM (ILE Concepts) was that binding
for service programs occurs at service program activation time, which occurs
when an ILE program that uses it is activated. From that, and what you said,
it sounds like the potential exists for an ILE program to call a procedure
in a service program with the wrong parameters and get clobbered. True?

Peter Dow
Dow Software Services, Inc.
909 425-0194 voice
909 425-0196 fax

From: <Jon.Paris@halinfo.it>
> The simple answer is "You might".  The signature checks that occur on a
service
> program have nothing to do with number and type of parameters. The
signature is
> only related to the number and order of exported names (procedures and
data) -
> you could add a parameter to every procedure in your service program but
if you
> didn't change the number of procs the signature would stay the same.  You
might
> subsequently get a parameter error, but then again you might not.  That is
why
> prototyping is critical.  The system really doesn't help very much.
>
> Check out the information on sigantures etc. in ILE Concepts or in the new
RPG
> redbook if you want a more tutorial style.


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