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
32
|
//@ check-pass
#![feature(type_alias_impl_trait)]
pub trait Foo {
// This was reachable in https://github.com/rust-lang/rust/issues/100800
fn foo(&self) {
unreachable!()
}
}
impl<T> Foo for T {}
pub struct B;
impl B {
fn foo(&self) {}
}
pub type Input = impl Foo;
#[define_opaque(Input)]
fn bop() -> Input {
run1(|x: B| x.foo(), B);
run2(|x: B| x.foo(), B);
panic!()
}
fn run1<F: FnOnce(Input)>(f: F, i: Input) {
f(i)
}
fn run2<F: FnOnce(B)>(f: F, i: B) {
f(i)
}
fn main() {}
|
