Experimental Physics and
Industrial Control System

Public bug reported:

While updating the seq record reference documentation, we noticed that
if one tries to use a seq record in "Specified" mode, the LNK0 will
never be processed, regardless of the OFFS field.

Possible cause in src/std/rec/seqRecord.c:

        if (prec->selm == seqSELM_Specified) {
            int grpn = prec->seln + prec->offs;
            if (grpn < 0 || grpn >= NUM_LINKS) {
                recGblSetSevr(prec, SOFT_ALARM, INVALID_ALARM);
                return asyncFinish(prec);
            }
            if (grpn == 0)
                return asyncFinish(prec);

            lmask = 1 << grpn;
        }

(code from branch 3.15)

** Affects: epics-base
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1842661

Title:
  seq record doesn't process LNK0 in "Specified" mode

Status in EPICS Base:
  New

Bug description:
  While updating the seq record reference documentation, we noticed that
  if one tries to use a seq record in "Specified" mode, the LNK0 will
  never be processed, regardless of the OFFS field.

  Possible cause in src/std/rec/seqRecord.c:

          if (prec->selm == seqSELM_Specified) {
              int grpn = prec->seln + prec->offs;
              if (grpn < 0 || grpn >= NUM_LINKS) {
                  recGblSetSevr(prec, SOFT_ALARM, INVALID_ALARM);
                  return asyncFinish(prec);
              }
              if (grpn == 0)
                  return asyncFinish(prec);

              lmask = 1 << grpn;
          }

  (code from branch 3.15)

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