From 8f68bdc38024c471f925ce8b6572ec41546229e1 Mon Sep 17 00:00:00 2001
From: woppopo <woppopo@protonmail.com>
Date: Sat, 4 Dec 2021 21:57:39 +0900
Subject: Make `Borrow` and `BorrowMut` impls `const`

---
 library/core/src/array/mod.rs | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

(limited to 'library/core/src/array')

diff --git a/library/core/src/array/mod.rs b/library/core/src/array/mod.rs
index b27c36baf37..e89659c41ea 100644
--- a/library/core/src/array/mod.rs
+++ b/library/core/src/array/mod.rs
@@ -149,14 +149,16 @@ impl<T, const N: usize> AsMut<[T]> for [T; N] {
 }
 
 #[stable(feature = "array_borrow", since = "1.4.0")]
-impl<T, const N: usize> Borrow<[T]> for [T; N] {
+#[rustc_const_unstable(feature = "const_borrow", issue = "91522")]
+impl<T, const N: usize> const Borrow<[T]> for [T; N] {
     fn borrow(&self) -> &[T] {
         self
     }
 }
 
 #[stable(feature = "array_borrow", since = "1.4.0")]
-impl<T, const N: usize> BorrowMut<[T]> for [T; N] {
+#[rustc_const_unstable(feature = "const_borrow", issue = "91522")]
+impl<T, const N: usize> const BorrowMut<[T]> for [T; N] {
     fn borrow_mut(&mut self) -> &mut [T] {
         self
     }
-- 
cgit 1.4.1-3-g733a5