https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107610
--- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> --- There's an alternative suggestion that would basically keep old documentation where it used to be. For the new one, we'll use a new url base: https://gcc.gnu.org/docs: https://gcc.gnu.org/pipermail/gcc-patches/2022-November/605722.html