mirror of
https://github.com/rust-lang/rust
synced 2024-10-03 07:14:34 +00:00
41 lines
836 B
Rust
41 lines
836 B
Rust
//@ known-bug: #111883
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#![crate_type = "lib"]
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#![feature(arbitrary_self_types, no_core, lang_items)]
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#![no_core]
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#[lang = "sized"]
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trait Sized {}
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#[lang = "copy"]
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trait Copy {}
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#[lang = "receiver"]
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trait Receiver {}
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#[lang = "dispatch_from_dyn"]
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trait DispatchFromDyn<T> {}
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impl<'a, T: ?Sized + Unsize<U>, U: ?Sized> DispatchFromDyn<&'a U> for &'a T {}
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#[lang = "unsize"]
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trait Unsize<T: ?Sized> {}
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#[lang = "coerce_unsized"]
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pub trait CoerceUnsized<T: ?Sized> {}
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impl<'a, 'b: 'a, T: ?Sized + Unsize<U>, U: ?Sized> CoerceUnsized<&'a U> for &'b T {}
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#[lang = "drop_in_place"]
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fn drop_in_place_fn<T>(a: &dyn Trait2<T>) {}
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pub trait Trait1 {
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fn foo(&self);
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}
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pub struct Type1;
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impl Trait1 for Type1 {
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fn foo(&self) {}
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}
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pub trait Trait2<T> {}
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pub fn bar1() {
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let a = Type1;
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let b = &a as &dyn Trait1;
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b.foo();
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}
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