summaryrefslogtreecommitdiffstats
path: root/src/test/ui/issues/issue-67039-unsound-pin-partialeq.rs
blob: a496e58a79bdd08f5b63596d9c758b0d78164bb0 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
// 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
}