Re: BUG #19703: information_schema.usage_privileges omits a sequence owner's implicit USAGE privilege

PG Bug reporting form <noreply(at)postgresql(dot)org> writes:
> For a newly created sequence, has_sequence_privilege reports that the owner
> has USAGE, but information_schema.usage_privileges omits that privilege. The
> view reports the owner privilege only after the same USAGE privilege is
> redundantly granted explicitly.

I think the problem is that the "sequences" arm of usage_privileges
writes

SELECT oid, relname, relnamespace, relkind, relowner, (aclexplode(coalesce(relacl, acldefault('r', relowner)))).* FROM pg_class

but the acldefault code for sequences is 's' not 'r', so the wrong
set of default ACL bits is injected. We would see a bunch of
obviously-inapplicable privileges reported, except that the query
then applies a filter:

AND c.prtype IN ('USAGE')

and we end up reporting nothing.

This appears to go clear back to 82e83f46a.

regards, tom lane