Jenkins build is still unstable: FreeBSD_HEAD-tests2 #867

[Garrett Cooper]

On Mar 22, 2015, at 15:09, Dimitry Andric <dim at FreeBSD.org> wrote:

> On 22 Mar 2015, at 23:04, Garrett Cooper <yaneurabeya at gmail.com> wrote:
>> 
>> On Mar 22, 2015, at 15:01, Craig Rodrigues <rodrigc at FreeBSD.org> wrote:
>> 
>> ...
>> 
>>> OK, converting expr.y to use unsigned integers would require a bit of work.
>>> 
>>> Can you commit your patch to the Makefile?  It fixes the problem for now.
>> 
>> +1
>> 
>> I’d still like to know why clang 3.5 doesn’t have this behavior though — there might be other potential issues lurking around that need to be solved (either here, in ports, or both).
> 
> Because this version optimizes better around undefined behavior.  There
> are most likely many issues lurking around, and most certainly in ports.
> 
> I would recommend using UBSan to tackle this kind of thing.

I hope this got a ports tinderbox run first… Adding UBSan to tinderbox runs for toolchain upgrades [in the future] might be a good idea.
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