[Bug c++/59342] Function Template Specialisation causing compiler error together with using clauses

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59342

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Seems fixed in GCC 6+ (but I can't figure out what fixed it).