mirror of
https://github.com/rust-lang/rust.git
synced 2024-10-31 22:41:50 +00:00
22 lines
497 B
Rust
22 lines
497 B
Rust
// run-pass
|
|
#![feature(unsize, coerce_unsized)]
|
|
|
|
// Verfies that PhantomData is ignored for DST coercions
|
|
|
|
use std::marker::{Unsize, PhantomData};
|
|
use std::ops::CoerceUnsized;
|
|
|
|
struct MyRc<T: ?Sized> {
|
|
_ptr: *const T,
|
|
_boo: PhantomData<T>,
|
|
}
|
|
|
|
impl<T: ?Sized + Unsize<U>, U: ?Sized> CoerceUnsized<MyRc<U>> for MyRc<T>{ }
|
|
|
|
fn main() {
|
|
let data = [1, 2, 3];
|
|
let iter = data.iter();
|
|
let x = MyRc { _ptr: &iter, _boo: PhantomData };
|
|
let _y: MyRc<dyn Iterator<Item=&u32>> = x;
|
|
}
|