Joseph Adams <joeyadams3.14...@gmail.com> writes: > Couldn't enum_eq just use get_fn_expr_argtype to determine the type of > enum input rather than rely on it being stored in the value
No. Support functions have to work in many contexts where there is no "side channel" such as get_fn_expr_argtype. What's more, it's very difficult to provide a side channel without creating security holes. We used to think it was OK for output functions to rely on a type OID passed separately from the actual value, but that's insecure: http://archives.postgresql.org/pgsql-hackers/2005-04/msg00998.php regards, tom lane -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
