On Jul 22, 2020, at 12:51, James Lowe <pkx1...@posteo.net> wrote: > > Hello, > > On 22/07/2020 17:32, Dan Eble wrote: >> I get a segfault when I try to make test-baseline @ >> fdf60f1462340bc663846e3efde352408def8f5f. > > Not me. :/ > > I just (now) ran through a set of make, make test-basline and make check on > current master:HEAD (which that hash refers to) without adding any MR. > > I know that is not technically useful to everyone Dan but it seems it might > be something specific to your environment.
It's a heisenbug. It isn't the random seed itself that makes a difference, just the fact that things are done differently now. Using different optimization flags makes a difference too. I enabled ubsan and it detected badness slightly earlier than the segfault, but not early enough that I have any idea what might have gone wrong or when. — Dan