Re: Bug in numeric multiplication

Dean Rasheed <dean.a.rasheed@gmail.com> writes:
> I just noticed that div_var_fast() has almost identical code, and so
> in principle it has the same vulnerability, although it obviously only
> affects the transcendental functions.
> I don't actually have a test case that triggers it, but it's basically
> the same algorithm, so logically it needs the same additional headroom
> to avoid a possible overflow.

Hm, good point.  I don't feel a compulsion to have a test case that
proves it's broken before we fix it.  Do you want to send a patch?
        regards, tom lane