From c22d896b9b1754b04e1dfbec14f056b374f35b62 Mon Sep 17 00:00:00 2001
From: Tim Diekmann <tim.diekmann@3dvision.de>
Date: Mon, 28 Sep 2020 10:42:29 +0200
Subject: [PATCH] Change `AllocRef::by_ref` to take `&self` instead of `&mut
 self`

---
 library/core/src/alloc/mod.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/library/core/src/alloc/mod.rs b/library/core/src/alloc/mod.rs
index f9eb8981bbf..6b14e06e452 100644
--- a/library/core/src/alloc/mod.rs
+++ b/library/core/src/alloc/mod.rs
@@ -337,7 +337,7 @@ pub unsafe trait AllocRef {
     ///
     /// The returned adaptor also implements `AllocRef` and will simply borrow this.
     #[inline(always)]
-    fn by_ref(&mut self) -> &Self {
+    fn by_ref(&self) -> &Self {
         self
     }
 }