wildcard function pointer non-type template parameter

Question

Templates can take non-type function pointer parameters, but there is a problem if all possible function pointer parameters are accepted, example:

void dummy()
{         


        

Answer 1

If you know the signature of the function you wish to call (and surely you do), can't you do

template
void proxy()
{
    F();
}

void dummy() {}

int main()
{
    proxy();
}