Seems CMPPTRT returns a "not equal" condition when it compares a null value
to an unresolved system pointer containing an invalid initial value.  Why?
Shouldn't this situation return an "equal" condition?  In the following
little program at the breakpoint, FLAG1 has value "0" while FLAG2 has value
"1".   Shouldn't FLAG1 have value "1" too, since pointer P and pointer Q
are both null and both will fail in a CALLX operand 1?

DCL SYSPTR P AUTO INIT("BADNAME!!");
DCL SYSPTR Q AUTO;
DCL DD FLAG1 AUTO CHAR(1);
DCL DD FLAG2 AUTO CHAR(1);

CMPPTRT(I) P, * / EQ(FLAG1);   /* becomes "0" */
CMPPTRT(I) Q, * / EQ(FLAG2);   /* becomes "1" */
BRK "LOOK";


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