[Bug c++/71449] builtins accepted in default template arguments but rejected when explicitly specified

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71449

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Note this is now accepted for C++11-C++20 and has since 4.6.