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#![feature(unsize, coerce_unsized)]
// Verfies that non-PhantomData ZSTs still cause coercions to fail.
// They might have additional semantics that we don't want to bulldoze.
use std::marker::{Unsize, PhantomData};
use std::ops::CoerceUnsized;
struct NotPhantomData<T: ?Sized>(PhantomData<T>);
struct MyRc<T: ?Sized> {
_ptr: *const T,
_boo: NotPhantomData<T>,
}
impl<T: ?Sized + Unsize<U>, U: ?Sized> CoerceUnsized<MyRc<U>> for MyRc<T>{ } //~ERROR
fn main() {
let data = [1, 2, 3];
let iter = data.iter();
let x = MyRc { _ptr: &iter, _boo: NotPhantomData(PhantomData) };
let _y: MyRc<dyn Iterator<Item=&u32>> = x;
}
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