Re: Maintaining old RPG 2 or 3 code on RDi

Yes - Charles is correct - FREE is not supported in RPG IV.

The reason for omitting it was that it didn't really work properly anyway. In many programs where it was used it was to all intents and purposes a no-op. It was not very practical to try to simulate something that was only working spasmodically.

Please don't ask me for all the gory details because it was too long ago (and I have slept many, many times since then) but let's just say there's a reason for the use of RCLRSC in all those old CL programs!


Jon Paris

www.partner400.com
www.SystemiDeveloper.com

On Oct 6, 2017, at 3:50 PM, Charles Wilt <charles.wilt@xxxxxxxxx> wrote:

There's at least one op-code in RPGIII

FREE (Deactivate a Program)
The FREE operation removes a program from the list of activated programs,
frees
static storage, and ensures program initialization (first cycle processing)
the next
time the program is called. It does not close files or unlock data areas.

That doesn't have an RPG IV version...thus CVTRPGSRC fails...

That's the only one I remember off the top of my head...

Charles


On Fri, Oct 6, 2017 at 12:43 PM, Dan <dan27649@xxxxxxxxx> wrote:

On Fri, Oct 6, 2017 at 2:29 PM, Charles Wilt <charles.wilt@xxxxxxxxx>
wrote:

Unless you happen to be using one of the few op-codes that don't convert,
there's little excuse not to convert. And if you do use one of those
non-converting op-codes...you're probably using it wrong anyway ;)

I was pretty certain that any valid RPG-III code would always convert to
compilable RPG-IV code using CVTRPGSRC. But, it's been so long since I've
had to deal with that, I'm not sure. I know that /free calcs obsoleted
some of the obscure opcodes, but a plain vanilla conversion using CVTRPGSRC
should always convert to compilable code.

- Dan
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