mirror of https://github.com/rust-lang/rust
30 lines
528 B
Rust
30 lines
528 B
Rust
use std::{
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ops::Deref,
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};
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struct Ptr<T: ?Sized>(Box<T>);
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impl<T: ?Sized> Deref for Ptr<T> {
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type Target = T;
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fn deref(&self) -> &T {
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&*self.0
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}
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}
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trait Foo {
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fn foo(self: Ptr<Self>); //~ ERROR `Ptr<Self>` cannot be used as the type of `self` without
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}
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struct Bar;
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impl Foo for Bar {
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fn foo(self: Ptr<Self>) {} //~ ERROR `Ptr<Bar>` cannot be used as the type of `self` without
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}
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impl Bar {
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fn bar(self: Box<Ptr<Self>>) {} //~ ERROR `Box<Ptr<Bar>>` cannot be used as the
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}
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fn main() {}
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