Re: recursive calls

local variables are created for each invocation, static variables only once per activation.

Dieter

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From: "David FOXWELL" <David.FOXWELL@xxxxxxxxx>
Sent: Monday, January 31, 2011 3:55 PM
To: "RPG programming on the IBM i / System i" <rpg400-l@xxxxxxxxxxxx>
Subject: recursive calls

Hi all

Today, by accident I set up a job where program tried to call itself. We have one program that is duplicated in several libraries and LIBA/PGM should have called LIBB/PGM. This was the first time I'd actually seen the error produce in this way. A coworker informed me that recursive calls were possible with subprocedures thanks to the fact that at each call, a separate storage area is allocated for each subprocedure. This is not the case for program calls. That means that if mySP calls mySP and there is a local variable V1, there will be two adresses for V1, each containing a different value.
I don't doubt my coworker, it's just that my reference is midrange.com.

Is my information accurate? What happens to static variables in such subprocedure calls?
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