/// lineno: u32,
/// // The column number currently being executed in `filename`, starting from '1'.
/// colno: u32,
+ /// // The function pointer to the function currently being executed.
+ /// // This can be compared against function pointers obtained by
+ /// // casting a function (e.g. `my_fn as *mut ()`)
+ /// fn_ptr: *mut ()
/// }
/// ```
///