https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61401
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
The template Y can only be instantiated with an empty parameter pack, which
makes it invalid. [temp.res] p8 says:
"If every valid specialization of a variadic template requires an empty
template parameter pack, the template is ill-formed, no diagnostic required"
