https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96416
--- Comment #15 from Jonathan Wakely <redi at gcc dot gnu.org> --- (In reply to Giuseppe D'Angelo from comment #14) > This gets evil really quick: the presence of both value_type and > element_type in an contiguous iterator will make you smash face-first > against LWG3446, which isn't implemented in GCC 10 AFAICS. That's right, but it's on my list to backport to the gcc-10 branch, probably in the next 48 hours.