a.akent...@postgrespro.ru writes: > I see this bug is now fixed in pg_upgrade/exec.c => check_bin_dir().
> There's another bit exactly like that in check_data_dir() though. Oh, so there is ... and looking around, that seems to have been copied-and-pasted out of check_cluster_versions(), without any thought for the fact that those calls were thereby made redundant. Fix pushed, thanks for noticing! regards, tom lane