Re: Windows regress fails (latest HEAD)

On Tue, Nov 10, 2020 at 12:03 PM Ranier Vilela <ranier(dot)vf(at)gmail(dot)com> wrote:
>
> Em sex., 26 de jun. de 2020 às 08:21, Ranier Vilela <ranier(dot)vf(at)gmail(dot)com> escreveu:
>>
>> Em qui., 11 de jun. de 2020 às 10:28, Ranier Vilela <ranier(dot)vf(at)gmail(dot)com> escreveu:
>>>
>>> Em qui., 11 de jun. de 2020 às 10:01, Andrew Dunstan <andrew(dot)dunstan(at)2ndquadrant(dot)com> escreveu:
>>>>
>>>>
>>>> On 6/11/20 8:52 AM, Ranier Vilela wrote:
>>>> > Hi,
>>>> > Latest HEAD, fails with windows regress tests.
>>>> >
>>>> > float8 ... FAILED 517 ms
>>>> > partition_prune ... FAILED 3085 ms
>>>> >
>>>> >
>>>>
>>>> The first thing you should do when you find this is to see if there is a
>>>> buildfarm report of the failure. If there isn't then try to work out why.
>>>
>>> Sorry, I will have to research the buildfarm, I have no reference to it.
>>>
>>>>
>>>>
>>>> Also, when making a report like this, it is essential to let us know
>>>> things like:
>>>>
>>>> * which commit is causing the failure (git bisect is good for finding
>>>> this)
>>>
>>> Thanks for hit (git bisect).
>>>
>>>>
>>>> * what Windows version you're testing on
>>>
>>> Windows 10 (2004)
>>>
>>>> * which compiler you're using
>>>
>>> msvc 2019 (64 bits)
>>
>>
>> Only for registry, if anyone else is using msvc 2019.
>> I'm using latest msvc 2019 64 bits (16.6.0)
>> Problably this is a compiler optimization bug.
>> vcregress check with build DEBUG, pass all 200 tests.
>
> With the current HEAD, the regression float8 in release mode (msvc 2019 64 bits) is gone.
> Maybe it's this commit:
> https://github.com/postgres/postgres/commit/0aa8f764088ea0f36620ae2955fa6c54ec736c46
>
> But (partition_prune) persists.
> partition_prune ... FAILED
>
> regards,
> Ranier Vilela

I am also experiencing this issue on one of my Windows machines (x64)
using 12.4. I believe this is new, possibly since 12.2. It doesn't
occur on another machine though, which is strange. It appears to be
the same diff output. Is it possible that the given result is also
valid for this test?

Russell