tests/incremental/issue-82920-predicate-order-miscompile.rs


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
28
29
30
31

//@ revisions: rpass1 rpass2

trait MyTrait: One + Two {}
impl<T> One for T {
    fn method_one(&self) -> usize {
        1
    }
}
impl<T> Two for T {
    fn method_two(&self) -> usize {
        2
    }
}
impl<T: One + Two> MyTrait for T {}

fn main() {
    let a: &dyn MyTrait = &true;
    assert_eq!(a.method_one(), 1);
    assert_eq!(a.method_two(), 2);
}

// Re-order traits 'One' and 'Two' between compilation
// sessions

#[cfg(rpass1)]
trait One { fn method_one(&self) -> usize; }

trait Two { fn method_two(&self) -> usize; }

#[cfg(rpass2)]
trait One { fn method_one(&self) -> usize; }