PG Bug reporting form <noreply(at)postgresql(dot)org> writes:
> When analyzing a relation with UDT, an error will be encountered if there is
> a join before the analyze stmts. Error message is "ERROR: missing support
> function 1(16386,16386) in opfamily 16392".
What your example shows is a buggy (very incomplete) operator class.
This is not a Postgres bug.
regards, tom lane