Re: pg18: Virtual generated columns are not (yet) safe when superuser selects from them - Mailing list pgsql-hackers

Christoph Berg <myon@debian.org> writes:
> So the question is, are all built-in *immutable* functions safe?

Perhaps.

> Extending the idea, perhaps the check could be moved to run-time and
> recursively check that only immutable functions are called, including
> user-defined immutable functions?

I don't think I'd trust that.  UDFs can claim to be immutable but
be lying about it.

            regards, tom lane