src/test/ui/mir/issue-73914.rs

   1 // build-pass
   2 // compile-flags:-Copt-level=0
   3 // edition:2018
   4
   5 struct S<T>(std::marker::PhantomData<T>);
   6
   7 impl<T> std::ops::Deref for S<T> {
   8     type Target = T;
   9
  10     fn deref(&self) -> &Self::Target {
  11         todo!()
  12     }
  13 }
  14 impl<T> std::ops::DerefMut for S<T> {
  15     fn deref_mut(&mut self) -> &mut Self::Target {
  16         todo!()
  17     }
  18 }
  19
  20 async fn new() -> S<u64> {
  21     todo!()
  22 }
  23
  24 async fn crash() {
  25     *new().await = 1 + 1;
  26 }
  27
  28 fn main() {
  29     let _ = crash();
  30 }