mirror of https://github.com/rust-lang/rust.git
27 lines
679 B
Rust
27 lines
679 B
Rust
//@ known-bug: #138564
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//@compile-flags: -Copt-level=0 -Cdebuginfo=2 --crate-type lib
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#![feature(unsize, dispatch_from_dyn, arbitrary_self_types)]
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use std::marker::Unsize;
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use std::ops::{Deref, DispatchFromDyn};
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#[repr(align(16))]
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pub struct MyPointer<T: ?Sized>(*const T);
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impl<T: ?Sized + Unsize<U>, U: ?Sized> DispatchFromDyn<MyPointer<U>> for MyPointer<T> {}
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impl<T: ?Sized> Deref for MyPointer<T> {
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type Target = T;
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fn deref(&self) -> &T {
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unimplemented!()
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}
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}
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pub trait Trait {
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fn foo(self: MyPointer<Self>) {}
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}
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// make sure some usage of `<dyn Trait>::foo` makes it to codegen
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pub fn user() -> *const () {
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<dyn Trait>::foo as *const ()
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}
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