Re: Additional debug info to aid cacheline analysis

[Florian Weimer]

* Mark Wielaard:

> Yes, that would work. I don't know what the lowest supported GCC
> version is, but technically it was definitely fixed in 4.10.0, 4.8.4
> and 4.9.2. And various distros would probably have backported the
> fix. But checking for 5.0+ would certainly give you a good version.
>
> How about the attached?

Would it be possible to test for the actual presence of the bug, using
-fcompare-debug?

(But it seems to me that the treatment of this particular compiler bug
is an outlier: other equally tricky bugs do not receive this kind of
attention.)