Related to this question, I want to specify my private section after my public interface.
template<class T, void (T::*f)()>
class B
{
public:
void g(int y) noexcept(noexcept(x.*f()))
{}
private:
T& x;
};
But I get an error from Clang that x is an undeclared identifyer.
mm_test.cpp:14:34: error: use of undeclared identifier 'x'
void g(int y) noexcept(noexcept(x.*f()))
^
It compiles just fine if the declaration of member x occurs before the declaration of g. Am I not supposed to be able to use a member variable in a noexcept operator earlier in the class definition than its declaration? If not, how could I achieve an equivalent noexcept specifier without moving the declaration of x ahead?