https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86368
--- Comment #9 from Justin Bassett <jbassett271 at gmail dot com> --- After more reflection, I do believe that ignoring attributes from unknown namespaces is one of the best options. My suggestion of whitelisting attributes falls apart when we consider how many attributes there may be. It's not unreasonable to expect that there could be 100s of unknown attributes, or at least around 30. Having to pass 30-100+ flags to whitelist each of those is not reasonable.
