Re: RPG-III to -IV conversion rehash worries - Part II

On 12/16/05, Fisher, Don <dfisher@xxxxxxxxxxxxx> wrote:
>
> Watch out for decimal data errors and numeric overflow operations like the
> old date conversion trick (DATE1 MULT 100.0001 DATE2).  You're probably
> safe
> from the former, but you might check for the placement of *BLANKS into
> numeric fields or data structures with numeric sub-fields.


Hmmm.  I thought the numeric overflow was only affected if I converted to
use EVAL.  Will the date conversion trick bomb if I leave it straight from
the RPG-III style?  Just asking, but we don't have any of those type of date
conversions (all dates are converted with data structures - YUCK).

I don't think DDEs are an issue.  I'll have to check on *BLANKS and
numerics.  If there was a "MOVE *BLANKS   NUMBER" and NUMBER is numeric,
will the -IV compiler catch it?  Or will run-time act any differently than
it did under RPG-III?

Generally speaking (and thankfully), the legacy apps here were all fairly
well written for their day.  I've yet to come across doing funny stuff with
blanks and numerics, and have never seen a 100.0001 or 10000.01 kind of
multiplication in the code here.  I did come across a FREE opcode in the
converted app but, fortunately, the app being FREE'd was updated at some
point to accept a negative number in a batch number parameter to signal the
program to seton LR and get out.

Thanks,
Dan