On Sun, Dec 8, 2019 at 6:52 PM Al Viro <viro@xxxxxxxxxxxxxxxxxx> wrote: > > FWIW, the thing that is IME absolutely incompatible with bisection > is CONFIG_GCC_PLUGIN_RANDSTRUCT. It can affect frequencies badly > enough, even in the cases when the bug isn't directly dependent > upon that thing. It will easily affect timing in major ways, yes. You're right that at least the CI bots might want to disable it for bisecting. Or force a particular seed for RANDSTRUCT - I seem to recall that there was some way to make it be at least repeatable for any particular structure. Linus