File: issue-105809.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 (36 lines) | stat: -rw-r--r-- 804 bytes parent folder | download | duplicates (5)
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
33
34
35
36
// Non-regression test ICE from issue #105809 and duplicates.

//@ build-pass: the ICE is during codegen
//@ compile-flags: --edition 2018 -Zmir-opt-level=1

use std::{future::Future, pin::Pin};

// Create a `T` without affecting analysis like `loop {}`.
fn create<T>() -> T {
    loop {}
}

async fn trivial_future() {}

struct Connection<H> {
    _h: H,
}

async fn complex_future<H>(conn: &Connection<H>) {
    let small_fut = async move {
        let _ = conn;
        trivial_future().await;
    };

    let mut tuple = (small_fut,);
    let (small_fut_again,) = &mut tuple;
    let _ = small_fut_again;
}

fn main() {
    let mut fut = complex_future(&Connection { _h: () });

    let mut cx = create();
    let future = unsafe { Pin::new_unchecked(&mut fut) };
    let _ = future.poll(&mut cx);
}