rust/tests/ui/traits/issue-23003.rs
2024-02-16 20:02:50 +00:00

33 lines
636 B
Rust

//@ run-pass
// Test stack overflow triggered by evaluating the implications. To be
// WF, the type `Receipt<Complete>` would require that `<Complete as
// Async>::Cancel` be WF. This normalizes to `Receipt<Complete>`
// again, leading to an infinite cycle. Issue #23003.
//@ pretty-expanded FIXME #23616
#![allow(dead_code)]
#![allow(unused_variables)]
use std::marker::PhantomData;
trait Async {
type Cancel;
}
struct Receipt<A:Async> {
marker: PhantomData<A>,
}
struct Complete {
core: Option<()>,
}
impl Async for Complete {
type Cancel = Receipt<Complete>;
}
fn foo(r: Receipt<Complete>) { }
fn main() { }