From: Dylan DPC <99973273+Dylan-DPC@users.noreply.github.com>
Date: Fri, 3 Jun 2022 09:18:23 +0000 (+0200)
Subject: Rollup merge of #97366 - WaffleLapkin:stabilize_array_slice_from_ref, r=dtolnay
X-Git-Url: https://git.lizzy.rs/?a=commitdiff_plain;h=025cf96615f44be6a75f82df50fa0f9e0e569b96;p=rust.git

Rollup merge of #97366 - WaffleLapkin:stabilize_array_slice_from_ref, r=dtolnay

Stabilize `{slice,array}::from_ref`

This PR stabilizes the following APIs as `const` functions in Rust `1.63`:
```rust
// core::array
pub const fn from_ref<T>(s: &T) -> &[T; 1];

// core::slice
pub const fn from_ref<T>(s: &T) -> &[T];
```

Note that the `mut` versions are not stabilized as unique references (`&mut _`) are [unstable in const context].

FCP: https://github.com/rust-lang/rust/issues/90206#issuecomment-1134586665

r? rust-lang/libs-api `@rustbot` label +T-libs-api -T-libs

[unstable in const context]: https://github.com/rust-lang/rust/issues/57349
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