MSI doesn't handle empty substitution patterns correctly

Bug #1810946 reported by Martin Konrad on 2019-01-08
14
This bug affects 2 people
Affects Status Importance Assigned to Milestone
EPICS Base
Status tracked in 7.0
3.15
Undecided
Martin Konrad
7.0
Undecided
Martin Konrad

Bug Description

EPICS 3.15.6 doesn't handle empty substitution patterns correctly anymore:

file "a.db" {
  { }
}

results in

msi: Parse error, unexpected '}'

No problems with older versions of Base. I'm able to work around the problem by using:

file "a.db" {
  { DUMMY="" }
}

This regression was introduced by the following commit:

https://git.launchpad.net/epics-base/commit/?h=3.15&id=67e2b74758982fd46be5529e28fcb93fd7eb59ad

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