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https://github.com/rust-lang/rust
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22 lines
323 B
Rust
22 lines
323 B
Rust
//@ known-bug: #54888
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#![feature(unsize, coerce_unsized)]
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use std::{
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ops::CoerceUnsized,
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marker::Unsize,
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};
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#[repr(C)]
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struct Ptr<T: ?Sized>(Box<T>);
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impl<T: ?Sized, U: ?Sized> CoerceUnsized<Ptr<U>> for Ptr<T>
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where
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T: Unsize<U>,
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{}
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fn main() {
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let foo = Ptr(Box::new(5)) as Ptr<dyn std::any::Any>;
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}
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