[MI400] Object domain violation or hardware protection error under sec lvl 40

["Njål Fisketjøn" <n.f@xxxxxxx>]

I've written a small program (in RPGLE) that uses inline MI
(system built-ins) to retrieve the invocation stack using MATINVS
and MATPTR to retrieve the program names from the pointers.

I guess patching the program to system state would help, but I
would like to know if there's a way to test if a pointer points to
an object in an "illegal domain" without materializing the pointer.