src/test/ui/self/elision/ref-self-async.rs

   1 // edition:2018
   2
   3 #![allow(non_snake_case)]
   4
   5 use std::marker::PhantomData;
   6 use std::ops::Deref;
   7 use std::pin::Pin;
   8
   9 struct Struct { }
  10
  11 struct Wrap<T, P>(T, PhantomData<P>);
  12
  13 impl<T, P> Deref for Wrap<T, P> {
  14     type Target = T;
  15     fn deref(&self) -> &T { &self.0 }
  16 }
  17
  18 impl Struct {
  19     // Test using `&self` sugar:
  20
  21     async fn ref_self(&self, f: &u32) -> &u32 {
  22         f //~ ERROR lifetime mismatch
  23     }
  24
  25     // Test using `&Self` explicitly:
  26
  27     async fn ref_Self(self: &Self, f: &u32) -> &u32 {
  28         f //~ ERROR lifetime mismatch
  29     }
  30
  31     async fn box_ref_Self(self: Box<&Self>, f: &u32) -> &u32 {
  32         f //~ ERROR lifetime mismatch
  33     }
  34
  35     async fn pin_ref_Self(self: Pin<&Self>, f: &u32) -> &u32 {
  36         f //~ ERROR lifetime mismatch
  37     }
  38
  39     async fn box_box_ref_Self(self: Box<Box<&Self>>, f: &u32) -> &u32 {
  40         f //~ ERROR lifetime mismatch
  41     }
  42
  43     async fn box_pin_ref_Self(self: Box<Pin<&Self>>, f: &u32) -> &u32 {
  44         f //~ ERROR lifetime mismatch
  45     }
  46
  47     async fn wrap_ref_Self_Self(self: Wrap<&Self, Self>, f: &u8) -> &u8 {
  48         f //~ ERROR lifetime mismatch
  49     }
  50 }
  51
  52 fn main() { }