[Bug c++/65396] Function template default template arguments not merged

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65396

--- Comment #9 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Another simplified testcase:

template<class T> void f();
template<class T=int> void f() {}
int main() { f(); }