https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90585
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Fixed on the trunk, guess for the backport we could do a simpler thing (as we included inttypes.h unconditionally and nobody complained on the branch, just use the PRIu64 and nothing else). On the trunk it is better to stay being more portable.