Daniel Gustafsson <daniel(at)yesql(dot)se> writes:
> When looking at the nearby suggestion to add deprecation comment for md5 in the
> .conf.sample, I happened to notice that autovacuum_worker_slots isn't commented
> out it the sample file.
> AFAIK all GUCs in the sample file should be set to their defaults and left
> commented out.
Yes, that is surely a bug. It should be fixed and back-patched.
regards, tom lane