Maybe there were no messages that you saw, but that doesn't mean there
were no messages. Did you happen to look at the
Diagnostic Cross Reference and Assembler Summary
section of the listing?
PRINT OFF affects what is displayed. IHAPSA by default is PRINT OFF. You
have control of that via the LIST keyword. The PC(ON) assembler option can
be a useful tool as that will show everything regardless of PRINT OFF.
FWIW, this test program
TEST CSECT
IHAPSA
IHAPSA
IHAASCB
IHAASCB
END TEST
finishes on my system with CC 20 and has no difference in the listing
between FLAG(0) and FLAG(8), but PC(ON) shows the messages which near the
end has
** ASMA043E Previously defined symbol - PSAIORTY
** ASMA257U Number of severity 8 messages exceeds FAIL MAXERRS value
specified
(Our FAIL(MAXERRS) default is apparently 500; with a larger FAIL(MAXERRS)
the assembly does get CC 8)
Since the assembly terminates upon ASMA257U (well, almost terminates, as
there still are a few things that get shown in the listing after that)
things like the "POP" at the end of IHAPSA don't happen. But that wouldn't
help you much since all the error messages are within the PRINT OFF
section.
Perhaps the assembler team would consider displaying ASMA257U even if
PRINT OFF is in effect.
Regardless, PC(ON) can be your friend.
Peter Relson
z/OS Core Technology Design
