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// 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;
let _a = a;
});
}
fn main() {}
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