[Bug c++/67013] Compilation error for well-formed program with empty declaration in the global namespace

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67013

--- Comment #7 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
To some extend this could be considered a regression if it is a true bug as
GCC's old parser did not error out about this.