https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117987
--- Comment #1 from Alfie Richards <Alfie.Richards at arm dot com> --- Of note for this specifically, is that there is currently ongoing discussion as to where the definitive information about a multi-versioned function should and can be specified in the Arm C Language Extension, which could alter what the correct behavior for this is. Definitely a bug to not error/warn and do the wrong thing currently though.
