https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94885
Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[10/11 Regression] |[10 Regression] Functional
|Functional cast from int to |cast from int to empty
|empty class type with empty |class type with empty base
|base incorrectly accepted |incorrectly accepted with
|with -std=c++2a |-std=c++2a
--- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Fixed on trunk so far.