Tomas Vondra <tomas.vondra@2ndquadrant.com> writes:
> On 08/17/2018 11:23 PM, Tom Lane wrote:
>> Yeah, we've definitely hit such problems before. The geometric logic
>> seems particularly prone to it because it's doing more and subtler
>> float arithmetic than the rest of the system ... but it's not the sole
>> source of minus-zero issues.
> We can go through the patch and fix places with obvious -0 risks, but
> then what? I don't have access to any powepc machines, so I can't check
> if there are any other failures. So the only thing I could do is commit
> and fix based on buildfarm failures ...
That's the usual solution. I don't see anything particularly wrong
with it. If the buildfarm results suggest a whole mess of problems,
it might be appropriate to revert and rethink; but you shouldn't be
afraid to use the buildfarm as a testbed.
regards, tom lane