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#![warn(unsafe_code)]
#![warn(rust_2018_idioms, single_use_lifetimes)]
#![allow(dead_code)]
use pin_project::{pin_project, UnsafeUnpin};
use std::{marker::PhantomPinned, pin::Pin};
fn is_unpin<T: Unpin>() {}
#[pin_project(UnsafeUnpin)]
pub struct Blah<T, U> {
field1: U,
#[pin]
field2: T,
}
#[allow(unsafe_code)]
unsafe impl<T: Unpin, U> UnsafeUnpin for Blah<T, U> {}
#[pin_project(UnsafeUnpin)]
pub struct OverlappingLifetimeNames<'pin, T, U> {
#[pin]
field1: T,
field2: U,
field3: &'pin (),
}
#[allow(unsafe_code)]
unsafe impl<T: Unpin, U> UnsafeUnpin for OverlappingLifetimeNames<'_, T, U> {}
#[test]
fn unsafe_unpin() {
is_unpin::<Blah<(), PhantomPinned>>();
is_unpin::<OverlappingLifetimeNames<'_, (), ()>>();
}
#[test]
fn trivial_bounds() {
#[pin_project(UnsafeUnpin)]
pub struct NotImplementUnsafUnpin {
#[pin]
field: PhantomPinned,
}
}
#[test]
fn dst() {
#[pin_project(UnsafeUnpin)]
pub struct A<T: ?Sized> {
x: T,
}
#[pin_project(UnsafeUnpin)]
pub struct B<T: ?Sized> {
#[pin]
x: T,
}
#[pin_project(UnsafeUnpin)]
pub struct C<T: ?Sized>(T);
#[pin_project(UnsafeUnpin)]
pub struct D<T: ?Sized>(#[pin] T);
}
#[test]
fn test() {
let mut x = OverlappingLifetimeNames { field1: 0, field2: 1, field3: &() };
let x = Pin::new(&mut x);
let y = x.as_ref().project_ref();
let _: Pin<&u8> = y.field1;
let _: &u8 = y.field2;
let y = x.project();
let _: Pin<&mut u8> = y.field1;
let _: &mut u8 = y.field2;
}
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