[llvm-bugs] [Bug 32908] head -r317729 FreeBSD's clang 4 targeting powerpc (32-bit) crashed processing buildworld's mpt_cam.c

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=32908

Mark Millard <markmi at dsl-only.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |INVALID
             Status|NEW                         |RESOLVED

--- Comment #2 from Mark Millard <markmi at dsl-only.net> ---
(In reply to Dimitry Andric from comment #1)
> I can't reproduce your segfault, with the test case you have posted. I have
> tried: clang 5.0.0 (trunk r301441), 4.0.0, 3.9.1 and 3.8.0.
. . .
> Is this segfault completely repeatable?  If not, I would suspect bad
> hardware.

Thanks for the investigation. Your guess turns out to be correct
based on a bunch more builds:

A) On another PC I've not had any replications despite
   trying.
but. . .
B) On the one from the report I've had rare failures
   in random places. (Most from scratch buildworld
   buildkernel sequences complete.)

I've adjusted the configuration that I found the
new-to-me PC was in. I'll see if I get any more
issues over time (many builds).

So I'll not be reporting such crashes based on this
new-to-me PC until it has had no examples for a
significant number of builds (if it ever does).

Sorry for the noise. Preliminary information
suggested no problems so I did not go in that
direction.

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