> On Behalf Of John Gilmore > > Sent: Tuesday, February 26, 2013 8:07 AM > > To: IBM-MAIN@LISTSERV.UA.EDU > > Subject: Re: I do not understand S0C6 on CDSG > > > > I have also verified that Edward Jaffe's clarification is entirely > > correct. I am now more than a little curious to discover how this > > particular bug was discovered. > > > > It is clear that one can specify GOFF and quadword alignment and then, > > avoiding with care or having had the blind luck to avoid any GOFF > > features that are not supported by the linkage editor (or the binder > > pretending to be the linkage editor), obtain a load module. >
I have no desire to reignite old conflicts in this area, but I can attest that the ONLY alignment values actually supported by contents supervision were doubleword and page, regardless of what the binder doc claimed. Most of the GOFF functionality introduced in PM3 circa mid '90s existed only in the designer's minds. As perhaps the only person on the planet actually trying to exploit that functionality in vendor code I had an almost daily dialog with developers in the assembler, binder, contents, DFSMS, media manager, PDSE and other component I've probably long forgotten. Even things you wouldn't think of (e.g. AMBLIST) got hit. So i am not at all surprised that bugs are still being uncovered now. However, the alignment of storage occupied by the load module/program object is immaterial to the alignment of storage operands. PAGE alignment was always available and would give the desired results using the techniques already discussed. For those worried about a few bytes wasted in a page, the virtual storage macros were long ago adjusted to allow specification of boundary alignment via CONTBDY and STARTBDY. If PoPs says an operand has to be quad-aligned - believe it. -- This email might be from the artist formerly known as CC (or not) You be the judge. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
