mirror of https://github.com/rust-lang/rust
38 lines
706 B
Rust
38 lines
706 B
Rust
//@ check-pass
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// Regression test for #37655. The problem was a false edge created by
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// coercion that wound up requiring that `'a` (in `split()`) outlive
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// `'b`, which shouldn't be necessary.
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#![allow(warnings)]
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trait SliceExt<T> {
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type Item;
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fn get_me<I>(&self, index: I) -> &I::Output
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where I: SliceIndex<Self::Item>;
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}
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impl<T> SliceExt<T> for [T] {
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type Item = T;
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fn get_me<I>(&self, index: I) -> &I::Output
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where I: SliceIndex<T>
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{
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panic!()
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}
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}
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pub trait SliceIndex<T> {
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type Output: ?Sized;
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}
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impl<T> SliceIndex<T> for usize {
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type Output = T;
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}
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fn foo<'a, 'b>(split: &'b [&'a [u8]]) -> &'a [u8] {
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split.get_me(0)
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}
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fn main() { }
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