File: send-on-async-fn-in-trait.rs

package info (click to toggle)
rustc-web 1.78.0%2Bdfsg1-2~deb12u3
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,245,420 kB
  • sloc: xml: 147,985; javascript: 18,022; sh: 11,083; python: 10,265; ansic: 6,172; cpp: 5,023; asm: 4,390; makefile: 4,269
file content (19 lines) | stat: -rw-r--r-- 422 bytes parent folder | download | duplicates (8) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
 
//@ run-rustfix
//@ edition: 2021

#![allow(unused)]

trait Foo {
    async fn test() -> () {}
    async fn test2() -> i32 { 1 + 2 }
}

fn bar<T: Foo>() {
    fn needs_send(_: impl Send) {}
    needs_send(T::test());
    //~^ ERROR `impl Future<Output = ()>` cannot be sent between threads safely
    needs_send(T::test2());
    //~^ ERROR `impl Future<Output = i32>` cannot be sent between threads safely
}

fn main() {}