What are some good debug practices to track auto type deduction? I know this trick: template<class... Args> struct check_type; //Don't define it! ...

What are some good debug practices to track auto type deduction? I know this trick: template<class... Args> struct check_type; //Don't define it! ... auto x=something(); checktype<decltype(x)>(); // Compiler: "error: invalid use of incomplete type ‘struct check_type<actual type of x>’" Also there is a nice boost type pretty print runtime library. Else?