File: issue-51770.rs

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rustc 1.70.0%2Bdfsg1-9
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// check-pass

#![crate_type = "lib"]

// In an older version, when NLL was still a feature, the following previously did not compile

use std::ops::Index;

pub struct Test<T> {
    a: T,
}

impl<T> Index<usize> for Test<T> {
    type Output = T;

    fn index(&self, _index: usize) -> &Self::Output {
        &self.a
    }
}