'identifier' : cannot take the address of a template parameter
A template parameter is not a real variable so you cannot take its address.
An example of how of this error message would be to define a template in a global namespace:
template<int n>
class X {
public:
void mf() {
int *pI = &n; // Error: cannot take the address of a template parameter
}
};
and then call the mf function:
X<10> x;
x.mf();