mirror of
https://github.com/rust-lang/rust
synced 2024-10-05 08:10:32 +00:00
b1d08275a9
An odd feature of Rust is that `Foo` is invalid, but `Bar` is okay:
type Foo<'a, 'b> = Box<dyn PartialEq<Foo<'a, 'b>>>;
type Bar<'a, 'b> = impl PartialEq<Bar<'a, 'b>>;
To get it right, track every time rustdoc descends into a type alias,
so if it shows up twice, it can be write the path instead of
infinitely expanding it.
16 lines
259 B
Rust
16 lines
259 B
Rust
// check-pass
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#![feature(type_alias_impl_trait)]
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type Bar<'a, 'b> = impl PartialEq<Bar<'a, 'b>> + std::fmt::Debug;
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fn bar<'a, 'b>(i: &'a i32) -> Bar<'a, 'b> {
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i
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}
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fn main() {
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let meh = 42;
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let muh = 42;
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assert_eq!(bar(&meh), bar(&muh));
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}
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