Re: problem with volatile functions in subselects ? - Mailing list pgsql-hackers

Bruce Momjian <bruce@momjian.us> writes:
>> If we do it, basically the response to anyone who complains about loss
>> of performance should be "fix your function to be marked stable or
>> immutable, as appropriate".

> Agreed.  Are we doing this, or is it a TODO?

It's done:
http://archives.postgresql.org/pgsql-committers/2006-08/msg00358.php
        regards, tom lane