Martin's answer is probably right (he usually is!)

Difference between what it does and what it *should* do.

I love all this legacy cr*p - engineering failings from 30 years ago getting
passed down through generations ..

Brian

-----Original Message-----
From: u2-users-boun...@listserver.u2ug.org
[mailto:u2-users-boun...@listserver.u2ug.org] On Behalf Of Wjhonson
Sent: 26 July 2012 17:23
To: u2-users@listserver.u2ug.org
Subject: Re: [U2] Passing dimensioned arrays


I was thinking along those same lines Brian But what it actually does is
completely ignore the line as if it were not present.
If you do a VLIST in fact, it generates *no* object code for that line
whatsoever.
I thought that was odd, but hey I can deal with it.



-----Original Message-----
From: Brian Leach <br...@brianleach.co.uk>
To: 'U2 Users List' <u2-users@listserver.u2ug.org>
Sent: Thu, Jul 26, 2012 2:03 am
Subject: Re: [U2] Passing dimensioned arrays


Well, in an INFORMATION flavor dimensioned arrays are supposed to be
dynamically resizable, which can sometimes be useful if you are using them
for temporary storage (building lists against category groups or the like). 
So the right action would be that it should allow redimensioning without
complaints as the array should just be a pointer to a dynamically allocated
structure, as in other languages.

If you use PICK flavor or $OPTIONS M then they should be fixed from
creation, reflecting the original limitations/addressing on the old Pick OS.
The rationale behind that was the speed at which individual elements could
be accessed and limitations on EQUating to field elements, which is why you
still see a lot of matread and matwrite even in cases where the benefits are
negligible in UniVerse.

It does make it a pain that you can't mix and match flavors if you have
named common, as the addressing/sizing of an INFORMATION and a PICK style
common block (which seem to follow the same pattern) are different.

Brian

-----Original Message-----
From: u2-users-boun...@listserver.u2ug.org
[mailto:u2-users-boun...@listserver.u2ug.org] On Behalf Of Wjhonson
Sent: 25 July 2012 23:28
To: u2-users@listserver.u2ug.org
Subject: [U2] Passing dimensioned arrays


I'm on Universe 10.2.3 in Information flavor and was surprised by something.
Admittedly I don't think I've actually come across this before, but it seems
like whoever wrote this, didn't understand how the system used it either.

If you dimensioned an array and then call a subroutine passing that array
CALL MYSUB(MAT SOMEARRAY)

And then in the MYSUB routine, you Dimension that same variable name again,
but to a different size, what do you expect the Runtime Engine would do?

A) It would redim the array to the new size
B) It would complain and throw a fit
C) It would ignore my new dimension command as if it weren't there at all



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