https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120504
--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> --- Importance isn't actually a field, it's the combination of Priority and Severity. And severity is pretty much ignored, and priority is set according to clear rules, so I see no harm in assuming that the RMs will give P1 to a gcc-16 regression.