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31 lines
600 B
Rust
31 lines
600 B
Rust
//@ build-pass (FIXME(62277): could be check-pass?)
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#![allow(unused)]
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#![deny(explicit_outlives_requirements)]
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// A case where we can't infer the outlives requirement. Example copied from
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// RFC 2093.
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// (https://rust-lang.github.io/rfcs/2093-infer-outlives.html
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// #where-explicit-annotations-would-still-be-required)
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trait MakeRef<'a> {
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type Type;
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}
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impl<'a, T> MakeRef<'a> for Vec<T>
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where T: 'a // still required
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{
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type Type = &'a T;
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}
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struct Foo<'a, T>
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where T: 'a // still required, not inferred from `field`
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{
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field: <Vec<T> as MakeRef<'a>>::Type
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}
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fn main() {}
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