[Bug sanitizer/93731] [10 regression] asan tests cause kernel panic on Darwin 11

[ro at CeBiTec dot Uni-Bielefeld.DE]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93731

--- Comment #5 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot Uni-Bielefeld.DE> ---
> --- Comment #3 from Iain Sandoe <iains at gcc dot gnu.org> ---
> These systems are EOL so we can't expect any fixes to the systems themselves.
>
> The question is "is the latest imported as an version even supposed to support
> 10.7"?

When I tried to build all of LLVM before the 9.0 release and ran into a
couple of issues, I asked the same question.  Getting an answer was like
pulling teeth, unfortunately, and in the end no one was able or willing
to state which macOS version are supposed to be supported by LLVM.  Very
disappointing IMO, but given this precedent I don't expect anything
better now.

> I agree that spending much time on making the sanitisers work on EOL machines
> is not a priority.  I don't have access to my 10.7 box right now - but will
> take a look next week.

I'm only building mainline on 10.7 because we happen to have a couple of
old Mac minis running 10.7 still around that I can use for the purpose.
Given the nightmarish slowdowns since 10.13, that is still a decent
option.

That said, when experimenting with bootstraps inside VirtualBox VMs, I
had also tried 10.11 where unlike 10.7 I could run with 4 virtual cpus,
getting reasonable build times.