https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98805
--- Comment #6 from Iain Sandoe <iains at gcc dot gnu.org> --- thanks FX.. That single patch is definitely "necessary, but not sufficient". .. AFAIK, the critical patches have been already applied to the 10.x branch (there were several) - but I'll run a check on macOS 11 with the current branch - and then short-list what you need to fix it...
