Ah, I thought that you were using the macros from the HLASM Toolkit. BTW, I do use foo DS 0H in macros, with generated labels, when it's convenient, but believes that it clutters the listing elsewhere.
-- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 ________________________________________ From: IBM Mainframe Assembler List [ASSEMBLER-LIST@LISTSERV.UGA.EDU] on behalf of Schmitt, Michael [michael.schm...@dxc.com] Sent: Tuesday, June 2, 2020 1:17 PM To: ASSEMBLER-LIST@LISTSERV.UGA.EDU Subject: Re: z/OS HLASM: EQU for statement labels On 2020-06-02, at 10:32:23, Seymour J Metz wrote: > > if x > if y > do a > foo endif > bar else > do b > endif > >> Then later if you want to insert more instructions immediately before the >> ELSE, it is very clear where to put them and none of the labels change. > > if x > if y > do a > foo endif > xc baz,baz > bar else > do b > endif > Gasp! There are obsessive advocates of GOTO-less coding; there are staunch defenders of GOTO. The above appears to invite the worst of both practices. Throw in a SIGNAL for good measure. (But I admire Rexx for labelled END, ITERATE, and LEAVE, and I wish for long-ITERATE and long-LEAVE.) Sorry, I was using pseudocode to illustrate a logical structure before coding it _in z/Architecture assembler_, where you have to use labels for your branch points. And it may have been a poorly contrived example because there would be a jump or branch between the two labels. Perhaps a better example is where there is an IF ... ENDIF immediately proceeding a DO ... WHILE, so that the ENDIF is at the same address as the start of the DO loop. DXC Technology Company - Headquarters: 1775 Tysons Boulevard, Tysons, Virginia 22102, USA. DXC Technology Company -- This message is transmitted to you by or on behalf of DXC Technology Company or one of its affiliates. It is intended exclusively for the addressee. The substance of this message, along with any attachments, may contain proprietary, confidential or privileged information or information that is otherwise legally exempt from disclosure. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient of this message, you are not authorized to read, print, retain, copy or disseminate any part of this message. If you have received this message in error, please destroy and delete all copies and notify the sender by return e-mail. Regardless of content, this e-mail shall not operate to bind DXC Technology Company or any of its affiliates 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. --.
