25 lines
505 B
Rust
25 lines
505 B
Rust
// edition:2018
|
|
use std::future::Future;
|
|
use std::pin::Pin;
|
|
use std::task::{Context, Poll};
|
|
|
|
fn spawn<T: Send>(_: T) {}
|
|
|
|
pub struct AFuture;
|
|
impl Future for AFuture{
|
|
type Output = ();
|
|
|
|
fn poll(mut self: Pin<&mut Self>, _: &mut Context<'_>) -> Poll<()> {
|
|
unimplemented!()
|
|
}
|
|
}
|
|
|
|
async fn foo() {
|
|
spawn(async { //~ ERROR future cannot be sent between threads safely
|
|
let _a = std::ptr::null_mut::<()>(); // `*mut ()` is not `Send`
|
|
AFuture.await;
|
|
});
|
|
}
|
|
|
|
fn main() {}
|