rust/tests/ui/issues/issue-67039-unsound-pin-partialeq.rs
2023-01-11 09:32:08 +00:00

28 lines
617 B
Rust

// Pin's PartialEq implementation allowed to access the pointer allowing for
// unsoundness by using Rc::get_mut to move value within Rc.
// See https://internals.rust-lang.org/t/unsoundness-in-pin/11311/73 for more details.
use std::ops::Deref;
use std::pin::Pin;
use std::rc::Rc;
struct Apple;
impl Deref for Apple {
type Target = Apple;
fn deref(&self) -> &Apple {
&Apple
}
}
impl PartialEq<Rc<Apple>> for Apple {
fn eq(&self, _rc: &Rc<Apple>) -> bool {
unreachable!()
}
}
fn main() {
let _ = Pin::new(Apple) == Rc::pin(Apple);
//~^ ERROR type mismatch resolving
}