https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92121
--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> --- There is no GCC bug here. Please find a more appropriate place to ask for help solving your problem (and try to accurately describe that problem -- so far all you've done is show things that don't work, which is to be expected with GCC 4.9.4). Try the gcc-help mailing list, or a CentOS forum. Describe the problem you're trying to solve. Ask for help solving it. Don't report a bug in GCC just because old versions of GCC don't support new features from 2018.
