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Date:      Thu, 22 Jun 2017 00:04:37 +0000
From:      bugzilla-noreply@freebsd.org
To:        freebsd-bugs@FreeBSD.org
Subject:   [Bug 220184] clang 4.0.0 segfaults on buildworld
Message-ID:  <bug-220184-8-0y4Q32FEYa@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-220184-8@https.bugs.freebsd.org/bugzilla/>
References:  <bug-220184-8@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D220184

--- Comment #4 from Chris Collins <chrysalis@chrysalisnet.org> ---
I have considered it could be memory or other i/o issues.  The fail point is
not always the same spot.

I did read elsewhere tho that clang 4.0 has a bug which when it uses too mu=
ch
memory it will segfault.

I plan to test all this again on another machine, probably a VM I have runn=
ing
on a XEON which has ECC ram and nothing overclocked.

I will try to do this before the end of this upcoming weekend.

Interestingly the last 2 compile runs have succeeded. But they are mostly f=
rom
cached ccache. So not really much if any actual compiling was done.

This system is overclocked on the cpu.

All the ports have been recompiled without segfaults using clang39 from por=
ts,
and no previous segfaults when base was 3.8.

However if I understand correctly when I first built 11-STABLE, it would ha=
ve
used clang40 compiled at the bootstrap stage to compile the rest of the wor=
ld?

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