Re: RPG III (RPG/400)

Hi John

I think I know what you mean, so this is just to clarify - RPG III and RPG/400 are, I think, the same thing. Or RPG/400 is what preceded RPG IV - IBM has RPG/400 in the list of manuals of interest for RPG that are not ILE RPG (RPG IV).

CVTRPGSRC converts from RPG III (RPG/400) to RPG IV - here's the bit from the help text for the command -

The Convert RPG Source (CVTRPGSRC) command converts RPG III or RPG/400 source code to ILE RPG source code.

Cheers
Vern

On 11/3/2015 10:16 AM, John R. Bromm wrote:

I seem to recall a few problems when I converted from RPG III to RPG/400 using CVTRPGSRC.

If I recall, *LIKE DEFN did not work the same for numerics. I think it was the RPG III that was wrong defining some numerics as packed when they had been defined like zoned numerics, or maybe it was the other way around, and when RPG/400 correctly defined those variables, it caused parameter mismatches on CALL operations where those misdefined variables had been used as parameters.

Another problem was with error processing. When an error occurred in an RPG III program, I would get an error message in the program where the error occurred. In RPG/400, if an error occurred, it would not display a message and would instead jump back to the most recent program in the call stack that did a call with an error indicator. It made it difficult to find where the error actually occurred or that an error had occurred.

I know I had others but can't recall what they were now.