https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87050
--- Comment #2 from Janne Blomqvist <jb at gcc dot gnu.org> --- The validation script that runs upon committing a change and sends email likely needs to change too. There is https://validator.github.io/validator/ that can be run as a batch script (needs java), or one can use a publically available hosted service (a few listed on the page above).