Is this a bug?

Shouldn't the "ALTER" statements below raise an exception?

fabrizio=# CREATE TABLE foo(bar SERIAL PRIMARY KEY);
CREATE TABLE

fabrizio=# SELECT relname, reloptions FROM pg_class WHERE relname ~ '^foo';
   relname   | reloptions
-------------+------------
 foo         |
 foo_bar_seq |
 foo_pkey    |
(3 rows)

fabrizio=# ALTER TABLE foo RESET (noname);
ALTER TABLE

fabrizio=# ALTER INDEX foo_pkey RESET (noname);
ALTER INDEX

fabrizio=# ALTER TABLE foo ALTER COLUMN bar RESET (noname);
ALTER TABLE