| mod stuff { | |
| pub struct Item { | |
| c_object: Box<CObj>, | |
| } | |
| pub struct CObj { | |
| name: Option<String>, | |
| } | |
| impl Item { | |
| pub fn new() -> Item { | |
| Item { | |
| c_object: Box::new(CObj { name: None }), | |
| } | |
| } | |
| } | |
| } | |
| macro_rules! check_ptr_exist { | |
| ($var:expr, $member:ident) => ( | |
| (*$var.c_object).$member.is_some() | |
| //~^ ERROR field `c_object` of struct `Item` is private | |
| ); | |
| } | |
| fn main() { | |
| let item = stuff::Item::new(); | |
| println!("{}", check_ptr_exist!(item, name)); | |
| } |