src/test/ui/fixup-deref-mut.rs

   1 // run-pass
   2
   3 #![allow(dead_code)]
   4 // pretty-expanded FIXME #23616
   5
   6 use std::ops::{Deref, DerefMut};
   7
   8 // Generic unique/owned smaht pointer.
   9 struct Own<T> {
  10     value: *mut T
  11 }
  12
  13 impl<T> Deref for Own<T> {
  14     type Target = T;
  15
  16     fn deref<'a>(&'a self) -> &'a T {
  17         unsafe { &*self.value }
  18     }
  19 }
  20
  21 impl<T> DerefMut for Own<T> {
  22     fn deref_mut<'a>(&'a mut self) -> &'a mut T {
  23         unsafe { &mut *self.value }
  24     }
  25 }
  26
  27 struct Point {
  28     x: isize,
  29     y: isize
  30 }
  31
  32 impl Point {
  33     fn get(&mut self) -> (isize, isize) {
  34         (self.x, self.y)
  35     }
  36 }
  37
  38 fn test0(mut x: Own<Point>) {
  39     let _ = x.get();
  40 }
  41
  42 fn test1(mut x: Own<Own<Own<Point>>>) {
  43     let _ = x.get();
  44 }
  45
  46 fn test2(mut x: Own<Own<Own<Point>>>) {
  47     let _ = (**x).get();
  48 }
  49
  50 fn main() {}