RE: Constant definitions (was: Visual RPG vs. Other Visual languages)

["Smith, Nelson" <NSmith@xxxxxxxxxxx>]

Your quoted definition is the way I always thought it worked too, which is
why I was so surprised to see Mike's example.  In my compiled code (V4R5) it
seems to work ok, including references to both the constants and the ds
fields.

>From a documentation standpoint, I kinda like being able to define allowed
constants immediately after (and indented under) a code field, for example,
as long as it doesn't cause any other problems.  Do you think it was
retained for compatibility with RPG/400?

> -----Original Message-----
> From: Jon Paris [SMTP:Jon.Paris@Partner400.com]
> Sent: Thursday, January 02, 2003 9:00 PM
> To:   rpg400-l@midrange.com
> Cc:   Barbara Morris
> Subject:      Visual RPG vs. Other Visual languages
>
>  >> After 20+ years of RPG coding, I learned something just last week from
> Mike Cravitz that I had never seen in any other example code before.  That
> was the ability to stick constants (the D-specs) right in the middle of
> procedure parameters or ds specifications.
>
> Well this used to work in DSs with RPG/400 - but it doesn't (or shouldn't)
> work with RPG IV.  Maybe Barbara can comment, but this seems to be a
> compiler bug.  This is what the manual says:
>
> "Definitions of data structures, prototypes, and procedure interfaces end
> with the first definition specification with non-blanks in positions
> 24-25,
> or with the first specification that is not a definition specification."
>
> I just did a quick check using the CODE verifier for V5R2 and sure enough
> a
> constant in the middle of a DS does indeed "work".  I say "work" because
> although the Ds is sized correctly (which surprised me) the constant
> appears
> from the xref to be handled correctly - however - any attempt to reference
> it results in a "not defined" error.  In other words it works as long as
> you
> don't use the constant!  To my mind it _should_ issue a "subfield not in
> DS"
> error for the first field after the const.
>
>
> Jon Paris
> Partner400
>
>
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