tests/ui/traits/vtable/issue-97381.rs

   1 use std::ops::Deref;
   2 trait MyTrait: Deref<Target = u32> {}
   3 struct MyStruct(u32);
   4 impl MyTrait for MyStruct {}
   5 impl Deref for MyStruct {
   6     type Target = u32;
   7
   8     fn deref(&self) -> &Self::Target {
   9         &self.0
  10     }
  11 }
  12 fn get_concrete_value(i: u32) -> MyStruct {
  13     MyStruct(i)
  14 }
  15 fn get_boxed_value(i: u32) -> Box<dyn MyTrait> {
  16     Box::new(get_concrete_value(i))
  17 }
  18 fn main() {
  19     let v = [1, 2, 3]
  20         .iter()
  21         .map(|i| get_boxed_value(*i))
  22         .collect::<Vec<_>>();
  23
  24     let el = &v[0];
  25
  26     for _ in v {
  27         //~^ ERROR cannot move out of `v` because it is borrowed
  28         println!("{}", ***el > 0);
  29     }
  30 }