172be8642d
Something else may have set errno, breaking the post-getline() logic that tries to detect the getline() error. This was initially noted in a jail on a system that has HPET, in a jail that does not expose /dev/hpet0 -- we see an earlier error in libc's vdso bits. Fixes: 5c053aa3c5e90 ("split: switch to getline() [...]")