From 5e97fc9aa265cb523a16cbe035c638eb35257cf5 Mon Sep 17 00:00:00 2001
From: woppopo <woppopo@protonmail.com>
Date: Sun, 23 Jan 2022 23:04:39 +0900
Subject: [PATCH] Make `NonNull::new` `const`

---
 library/core/src/ptr/non_null.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/library/core/src/ptr/non_null.rs b/library/core/src/ptr/non_null.rs
index 3a7e99faccf..3f5d3f62c96 100644
--- a/library/core/src/ptr/non_null.rs
+++ b/library/core/src/ptr/non_null.rs
@@ -211,8 +211,9 @@ impl<T: ?Sized> NonNull<T> {
     /// }
     /// ```
     #[stable(feature = "nonnull", since = "1.25.0")]
+    #[rustc_const_unstable(feature = "const_nonnull_new", issue = "93235")]
     #[inline]
-    pub fn new(ptr: *mut T) -> Option<Self> {
+    pub const fn new(ptr: *mut T) -> Option<Self> {
         if !ptr.is_null() {
             // SAFETY: The pointer is already checked and is not null
             Some(unsafe { Self::new_unchecked(ptr) })