Re: Basing a field on an unreferenced field(s) doesn't work

["Denis Robitaille" <DRobitaille@xxxxxxxxxxxx>]

You are right, I am a little bit pointer phobic.

The overlaqpping DS example that you give does suffer the same problem but when 
you look at the code, the error is more obvious (i my opinion).

And now for the example of non consecutive storage assignement:

Let say that in you file, you have the following field defined consecutively:
fld1 fld2 fld3

But, in the RPG, you define the following DS:
     ds
           otherfld    (otherfld is bigger than fld1)
           fdl1  overlay(otherfld)

There is now a gap between fld1 and fld2

There are other situation that can cause this but this is fairly typical.


Denis Robitaille
Directeur services techniques
Cascades Inc
819 363 5187
fax 819 363 5177


>>> rob@dekko.com 01/11/02 11:36am >>>

I think you are being pointer phobic.  I feel for you - I used to be too.
But I've seen the light.

Let's say that a Luddite wanted to avoid pointers.  But they overlayed a 4
element array over a data structure that was only 3 elements big - as in
your example.  Wouldn't they still be suffering a problem?  So this problem
is not really pointer specific.

I've heard this before "You are also assuming that consecutive fields in a
file are stored in consecutive memory location which is not always the
case."  But I've seen no examples.


Rob Berendt
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