caca256b52
Warn when [T; N].into_iter() is ambiguous in the new edition. Fixes https://github.com/rust-lang/rust/issues/88475 In https://github.com/rust-lang/rust/issues/88475, a situation was found where `[T; N].into_iter()` becomes *ambiguous* in the new edition. This is different than the case where `(&[T; N]).into_iter()` resolves differently, which was the only case handled by the `array_into_iter` lint. This is almost identical to the new-traits-in-the-prelude problem. Effectively, due to the array-into-iter hack disappearing in Rust 2021, we effectively added `IntoIterator` to the 'prelude' in Rust 2021 specifically for arrays. This modifies the prelude collisions lint to detect that case and emit a `array_into_iter` lint in that case. |
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| COMPILER_TESTS.md | ||