>Your "astonishment" only shows your own limitations.
Maybe true.

The reason it is not reasonable and useful is for exactly the reason that
Roland ran into trouble: we might choose to "roll back" a definition at any
point for any reason that we feel useful.

>I'm guessing that your astonishment arises because you do not
>distribute source code across multiple OS releases, and so you are
>not all that familiar with (or sympathetic to) the issues that arise.
Your guess is wrong.

>Roland's technique is very reasonable considering that for many
>decades you did not provide any of us with an alternative. Thank you
>for finally providing SYSSTATE_OSREL.
Did anyone ever ask for this sort of thing before you did via a formal
mechanism?
You're certainly far less likely to get what you want if you don't ask for
it (not that asking for it will necessarily get it for you)

>Now if only you would consider some of the other design problems with
>SYSSTATE which I described to you last November and which you ignored
>(specifically, my suggestion about implementing a "SYSSTATE
>OSREL=RUNTIMECHECK" capability).

This would be prohibitively expensive and will clearly never happen.

Peter Relson
z/OS Core Technology Design

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