[llvm-dev] llvm 12 regression bug with llvm-ar

Shawn Webb via llvm-dev llvm-dev at lists.llvm.org
Mon Jun 14 08:17:56 PDT 2021

On Mon, Jun 14, 2021 at 07:45:06AM -0700, Tom Stellard wrote:
> On 6/14/21 5:31 AM, Shawn Webb via llvm-dev wrote:
> > Hey all,
> > 
> > As a little bit of background, HardenedBSD compiles (nearly) the whole
> > operating system (static/shared libraries and applications) with LTO.
> > HardenedBSD is a derivative of FreeBSD that follows FreeBSD very
> > closely (we merge in changes from FreeBSD every six hours).
> > 
> > Over the weekend, FreeBSD merged in llvm 12 (upgrading from llvm 11).
> > We've found at least one regression with llvm-ar. Below is the log of
> > the llvm error output. I'm sure you all will need more context, so
> > please let me know how I can help in that regard.
> > 
> Can you file a bug for this and put release-12.0.1 in the blocks field.
> We are getting close to the release, so there may not be enough time to
> fix this, but I would like to track this bug anyway.

Thanks for the response! I've filed a bug report here:

I'm going to try to figure out which specific object file is causing
llvm-ar to crash. I'll report back when I know more.


Shawn Webb
Cofounder / Security Engineer

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