File: indirect-recursion-issue-112047.rs

package info (click to toggle)
rustc 1.85.0%2Bdfsg3-1
  • links: PTS, VCS
  • area: main
  • in suites: experimental, sid, trixie
  • size: 893,396 kB
  • sloc: xml: 158,127; python: 35,830; javascript: 19,497; cpp: 19,002; sh: 17,245; ansic: 13,127; asm: 4,376; makefile: 1,051; perl: 29; lisp: 29; ruby: 19; sql: 11
file content (29 lines) | stat: -rw-r--r-- 489 bytes parent folder | download | duplicates (4) 
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
 
//@ edition: 2021
//@ build-fail

#![feature(impl_trait_in_assoc_type)]

use core::future::Future;

trait Recur {
    type Recur: Future<Output = ()>;

    fn recur(self) -> Self::Recur;
}

async fn recur(t: impl Recur) {
    t.recur().await;
}

impl Recur for () {
    type Recur = impl Future<Output = ()>;

    fn recur(self) -> Self::Recur {
        async move { recur(self).await; }
        //~^ ERROR recursion in an async block requires boxing
    }
}

fn main() {
    recur(());
}