mirror of https://github.com/rust-lang/rust
31 lines
675 B
Rust
31 lines
675 B
Rust
//@ check-pass
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use std::marker::PhantomData;
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pub trait GenAssoc<T> {
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type Iter<'at>;
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fn iter(&self) -> Self::Iter<'_>;
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fn reborrow<'longt: 'shortt, 'shortt>(iter: Self::Iter<'longt>) -> Self::Iter<'shortt>;
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}
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pub struct Wrapper<'a, T: 'a, A: GenAssoc<T>> {
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a: A::Iter<'a>,
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_p: PhantomData<T>,
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}
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impl<'ai, T: 'ai, A: GenAssoc<T>> GenAssoc<T> for Wrapper<'ai, T, A>
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where
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A::Iter<'ai>: Clone,
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{
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type Iter<'b> = ();
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fn iter<'s>(&'s self) -> Self::Iter<'s> {
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let a = A::reborrow::<'ai, 's>(self.a.clone());
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}
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fn reborrow<'long: 'short, 'short>(iter: Self::Iter<'long>) -> Self::Iter<'short> {
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()
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}
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}
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fn main() {}
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