tests/ui/issues/issue-13264.rs

   1 // run-pass
   2 #![allow(non_camel_case_types)]
   3 #![allow(non_snake_case)]
   4
   5 use std::ops::Deref;
   6
   7 struct Root {
   8     jsref: JSRef
   9 }
  10
  11 impl Deref for Root {
  12     type Target = JSRef;
  13
  14     fn deref<'a>(&'a self) -> &'a JSRef {
  15         &self.jsref
  16     }
  17 }
  18
  19 #[derive(Copy, Clone)]
  20 struct JSRef {
  21     node: *const Node
  22 }
  23
  24 impl Deref for JSRef {
  25     type Target = Node;
  26
  27     fn deref<'a>(&'a self) -> &'a Node {
  28         self.get()
  29     }
  30 }
  31
  32 trait INode {
  33     fn RemoveChild(&self);
  34 }
  35
  36 impl INode for JSRef {
  37     fn RemoveChild(&self) {
  38         self.get().RemoveChild(0)
  39     }
  40 }
  41
  42 impl JSRef {
  43     fn AddChild(&self) {
  44         self.get().AddChild(0);
  45     }
  46
  47     fn get<'a>(&'a self) -> &'a Node {
  48         unsafe {
  49             &*self.node
  50         }
  51     }
  52 }
  53
  54 struct Node;
  55
  56 impl Node {
  57     fn RemoveChild(&self, _a: usize) {
  58     }
  59
  60     fn AddChild(&self, _a: usize) {
  61     }
  62 }
  63
  64 fn main() {
  65     let n = Node;
  66     let jsref = JSRef { node: &n };
  67     let root = Root { jsref: jsref };
  68
  69     root.AddChild();
  70     jsref.AddChild();
  71
  72     root.RemoveChild();
  73     jsref.RemoveChild();
  74 }