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

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