Re: LISTEN/NOTIFY bug: VACUUM sets frozenxid past a xid in async queue

I have the impression that this thread has lost focus on the idea of
producing a backpatchable bugfix.  The last proposed patch has a lot of
new mechanism that doesn't seem suitable for backpatch.  I could be
wrong of course.

-- 
Álvaro Herrera         PostgreSQL Developer  —  https://www.EnterpriseDB.com/
"[PostgreSQL] is a great group; in my opinion it is THE best open source
development communities in existence anywhere."                (Lamar Owen)