From: bors <bors@rust-lang.org>
Date: Sun, 25 Apr 2021 07:26:49 +0000 (+0000)
Subject: Auto merge of #84147 - cuviper:array-method-dispatch, r=nikomatsakis,m-ou-se
X-Git-Url: https://git.lizzy.rs/?a=commitdiff_plain;h=13a2615883aa28433383a723a764ca9acb43fd48;p=rust.git

Auto merge of #84147 - cuviper:array-method-dispatch, r=nikomatsakis,m-ou-se

Cautiously add IntoIterator for arrays by value

Add the attribute described in #84133, `#[rustc_skip_array_during_method_dispatch]`, which effectively hides a trait from method dispatch when the receiver type is an array.

Then cherry-pick `IntoIterator for [T; N]` from #65819 and gate it with that attribute. Arrays can now be used as `IntoIterator` normally, but `array.into_iter()` has edition-dependent behavior, returning `slice::Iter` for 2015 and 2018 editions, or `array::IntoIter` for 2021 and later.

r? `@nikomatsakis`
cc `@LukasKalbertodt` `@rust-lang/libs`
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13a2615883aa28433383a723a764ca9acb43fd48