On Sun, May 16, 2010 at 1:11 PM, Tom Lane <t...@sss.pgh.pa.us> wrote: > Robert Haas <robertmh...@gmail.com> writes: >> Couldn't you apply this argument to any built-in immutable function >> whatsoever? > > No, only the ones that are built on top of other functions that aren't > immutable.
Built on top of? I don't get it. It seems like anything of the form immutablefunction(volatilefunction()) is vulnerable to this, and you can give a volatile function as an argument to any function you like. If you're saying we're testing for immutability by looking only at the outermost function call, that seems pretty broken. -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise Postgres Company -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
