> I realize this is an evolving space. And, it's always possible that 
> things have changed enough, since I last asked, that your blanket 
> statement "IBM does use these traps" is now accurate. But, knowing IBM 
> as I do, I have my doubts. Case in point: If IBM was religiously using 
> IgvInitGetmain on their test and development systems, the issue with the 

> CICS DFHPD640 dump formatter Jim mentioned yesterday would almost 
> certainly have been discovered by someone at IBM and not by an ISV.

  In particular, IPCS-related code tends to be adept at avoiding being
tested with the traps.  Since such code does not require authorization,
and can be run on any supported release via STEPLIB/TSOLIB, it tends
to get done on what you might call a development system.  But since
development is our business, we consider those to be production systems,
and the systems programming and operations is contracted out to 
IBM Global Services, and so we don't activate the traps on those systems.

Jim Mulder   z/OS System Test   IBM Corp.  Poughkeepsie,  NY

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