mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-27 01:04:03 +00:00
20 lines
552 B
Rust
20 lines
552 B
Rust
use std::marker::PhantomPinned;
|
|
use std::pin::Pin;
|
|
|
|
trait MyUnpinTrait {
|
|
fn into_pinned_type(self: Pin<&mut Self>) -> Pin<&mut PhantomPinned>;
|
|
}
|
|
impl MyUnpinTrait for PhantomPinned {
|
|
fn into_pinned_type(self: Pin<&mut Self>) -> Pin<&mut PhantomPinned> {
|
|
self
|
|
}
|
|
}
|
|
impl Unpin for dyn MyUnpinTrait {} //~ ERROR E0321
|
|
|
|
// It would be unsound for this function to compile.
|
|
fn pin_it(not_yet_pinned: &mut PhantomPinned) -> Pin<&mut PhantomPinned> {
|
|
Pin::new(not_yet_pinned as &mut dyn MyUnpinTrait).into_pinned_type()
|
|
}
|
|
|
|
fn main() {}
|