clang-3.8 crashes dsymutil with -gdwarf-4 on 10.9

[Jeremy Huddleston Sequoia]

> On Mar 2, 2017, at 01:58, Mihai Moldovan <ionic at macports.org> wrote:
> 
> On 02.03.2017 06:51 AM, Jeremy Huddleston Sequoia wrote:
>> Out of curiosity, do you have the issue with clang-3.7 -gdwarf-4 and your dsymutil from dwarfutils-119?
> 
> Yes, triggers an assertion as well. I currently don't have 3.6 installed, so
> didn't test with that.
> 
> 
>> MacPorts for me, so we can at least get a fix in on our side.
> 
> https://trac.macports.org/ticket/53673
> 
> 
>> It might be worth an upstream bug as well.  I'd like to follow it, so please point me to that one as well.
> 
> I put you on CC on the upstream ticket.
> https://bugs.llvm.org//show_bug.cgi?id=32116
> 

Thanks,

I've got an easy workaround for the 3.8+ case and the upstream fix seems simple as well.

3.7 and earlier might be a bit tricky.  As a workaround, I suggest you try this to see if it causes the 3.7 driver to use llvm-3.9's dsymutil:

   sudo ln -s /opt/local/bin/llvm-dsymutil-mp-3.9 /usr/local/bin/dsymutil

--Jeremy

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