20 lines
513 B
Rust
20 lines
513 B
Rust
|
//@ run-rustfix
|
||
|
|
//@ edition: 2021
|
||
|
|
|
||
|
|
#![allow(unused)]
|
||
|
|
|
||
|
|
trait Foo {
|
||
|
|
fn test() -> impl std::future::Future<Output = ()> + Send { async {} }
|
||
|
|
fn test2() -> impl std::future::Future<Output = i32> + Send {async { 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() {}
|