I wrote:
> To start with, just a few lines down in IdentifySystem() the column
> is filled using Int32GetDatum not Int64GetDatum. I will get some
> popcorn and await the opinions of the 32-bit buildfarm animals.
Didn't need to wait long:
https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=florican&dt=2022-07-04%2005%3A39%3A50
The other questions still stand.
regards, tom lane