Ports failing with -fno-common with clang 9/gcc 9

[Tobias Kortkamp]

On Thu, Apr 30, 2020, at 14:56, Kyle Evans wrote:
> In any event, I would urge folks to be proactive and identify this
> stuff, reporting issues upstream and spreading awareness of the
> impending default change for those projects that may not already be
> actively aware.
> 
> On a closing note, I'm just going to kinda drop these patches here for
> anyone that's willing/able to help make this a collective effort to
> identify/fix/report problems here; they backport the default
> -fno-common patch from future-LLVM11 to the base system compiler on a
> system near you:
> 
> HEAD: https://people.freebsd.org/~kevans/llvm-fnocommon-head.diff

Can you ask for an exp-run with this patch applied?  There needs
to be a comprehensive list of failing ports for people to be able
to work on this.  We see some failing ports because of default
-fno-common in GCC 10 [1] already.

[1] https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=246700