Tomas Vondra <tomas.von...@2ndquadrant.com> writes: > It doesn't seem to be particularly platform-specific, but I've been > unable to reproduce it so far. It seems on older gcc versions, though.
It's looking kind of like an uninitialized-memory problem. Note the latest from spurfowl, https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=spurfowl&dt=2020-04-07%2000%3A15%3A05 which got through "make check" and then failed during pg_upgrade's repetition of the test. Similarly on rhinoceros. So there's definitely instability there even on one machine. Perhaps something to do with unexpected cache flushes?? regards, tom lane
