On 09/03/2018 04:08 AM, Tom Lane wrote:
> 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.
>
FWIW I plan to get this committed sometime this week, when I'm available
to fix the expected buildfarm breakage.
regards
--
Tomas Vondra http://www.2ndQuadrant.com
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