Static rustc_lint::BOXED_SLICE_INTO_ITER

pub static BOXED_SLICE_INTO_ITER: &Lint

The boxed_slice_into_iter lint detects calling into_iter on boxed slices.

Example

vec![1, 2, 3].into_boxed_slice().into_iter().for_each(|n| { *n; });

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Explanation

Since Rust 1.80.0, boxed slices implement IntoIterator. However, to avoid breakage, boxed_slice.into_iter() in Rust 2015, 2018, and 2021 code will still behave as (&boxed_slice).into_iter(), returning an iterator over references, just like in Rust 1.79.0 and earlier. This only applies to the method call syntax boxed_slice.into_iter(), not to any other syntax such as for _ in boxed_slice or IntoIterator::into_iter(boxed_slice).