Ryzen issues on FreeBSD ?

[Don Lewis]

On 20 Jan, Mark Millard wrote:
> Don Lewis truckman at FreeBSD.org wrote on
> Sat Jan 20 02:35:40 UTC 2018 :
> 
>> The only real problem with the old CPUs is the random segfault problem
>> and some other random strangeness, like the lang/ghc build almost always
>> failing.
> 
> 
> At one time you had written
> ( https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=221029
> comment #103 on 2017-Oct-09):
> 
> QUOTE
> The ghc build failure seems to be gone after upgrading the a
> more recent 12.0-CURRENT.  I will try to bisect for the fix
> when I have a chance.
> END QUOTE
> 
> Did that not pan out? Did you conclude it was
> hardware-context specific?

I was never able to reproduce the problem.  It seems like it failed on
the first ports build run after I replaced the CPU.  When I upgraded the
OS and ports, the build succeeded.  I tried going back to much earlier
OS and ports versions, but I could never get the ghc build to fail
again.  I'm baffled by this ...