https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92008
--- Comment #19 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Created attachment 48287 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=48287&action=edit gcc10-pr92008.patch Or maybe just do require bison 3 (7 years old) if intl/plural.y needs to be regenerated? Disadvantage is that people who don't use contrib/gcc_update --touch and do end up with intl/plural.c newer and have older bison will get an error (guess not an issue in release tarballs, because there we through gcc_update --touch ensure the timestamps are ok).
