https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122576
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
> : bool_constant<(__is_fast_hash<_Types>::value && ...)>
I think that should have been:
: bool_constant<(__is_fast_hash<hash<_Types>>::value && ...)>
