https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70704
--- Comment #22 from Jakub Jelinek <jakub at gcc dot gnu.org> --- I see flex 2.6 has been released (already in November last year), does that help? I could do the final release and/or rc2 with flex 2.6 instead of flex 2.5.37...
