My "favorite" is the warning you get when the target of your JAS/BRAS shifts to an offset more that 64K from the instruction. You only get a ASMA320W warning (when would this not be an error?), and at execution time the truncated immediate offset branches you to some arbitrary address! Thank you for BEAR!
-----Original Message----- From: IBM Mainframe Assembler List [mailto:ASSEMBLER-LIST@LISTSERV.UGA.EDU] On Behalf Of Mark Boonie Sent: Friday, March 24, 2017 13:39 To: ASSEMBLER-LIST@LISTSERV.UGA.EDU Subject: Re: HLASM "Anomaly" One reason to implement the messages as warnings instead of errors is that warnings can be suppressed, using options like SUPRWARN, TYPECHECK, FLAG, ALIGN, USING(WARN()), and maybe others. Some of these warnings can also be suppressed "locally" using ACONTROL. I'm not aware of any errors that can be suppressed, and I suspect that that is intentional. Hopefully whatever proposal is submitted to IBM won't ask for existing warnings to be removed. - mb IBM Mainframe Assembler List <ASSEMBLER-LIST@LISTSERV.UGA.EDU> wrote on 03/24/2017 11:17:02 AM: > From: Charles Mills <charl...@mcn.org> > To: ASSEMBLER-LIST@LISTSERV.UGA.EDU > Date: 03/24/2017 11:18 AM > Subject: Re: HLASM "Anomaly" > Sent by: IBM Mainframe Assembler List > <ASSEMBLER-LIST@LISTSERV.UGA.EDU> > > Apologies for the late reply. Outlook thought this was SPAM. > > Warnings are not much better or different than errors. It sounds great to > say "issue a warning" but the fact is that then the programmer has to either > (a.) live with and ignore RC=4 for the life of the project; of (b.) change > the code. If the former then why issue the warning at all; if the > latter then it is no better or different than an error. I think > warnings in this > situation are kind of wishy-washy: either it's wrong or it's not. I > get the > difficulty in deciding whether LHI 0,X'FFFF' is wrong or not, but > saying it > is half wrong (4 rather than 8) is just bailing on the decision. > > Charles CSC - This is a PRIVATE message - If you are not the intended recipient, please delete without copying and kindly advise us by e-mail of the mistake in delivery. NOTE: Regardless of content, this e-mail shall not operate to bind the Company to any order or other contract unless pursuant to explicit written agreement or government initiative expressly permitting the use of e-mail for such purpose.
