From d70d3204b7e669ff8046bfe55999a36a39896c08 Mon Sep 17 00:00:00 2001
From: Markus Reiter <me@reitermark.us>
Date: Thu, 8 Feb 2024 20:40:55 +0100
Subject: [PATCH] Use `transmute_unchecked` in `NonZero::new`.

---
 library/core/src/num/nonzero.rs | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/library/core/src/num/nonzero.rs b/library/core/src/num/nonzero.rs
index 193f2fa8731af..bf676cb22489e 100644
--- a/library/core/src/num/nonzero.rs
+++ b/library/core/src/num/nonzero.rs
@@ -8,7 +8,6 @@ use crate::intrinsics;
 use crate::marker::StructuralEq;
 use crate::marker::StructuralPartialEq;
 use crate::ops::{BitOr, BitOrAssign, Div, Neg, Rem};
-use crate::ptr;
 use crate::str::FromStr;
 
 use super::from_str_radix;
@@ -91,13 +90,12 @@ where
     /// Creates a non-zero if the given value is not zero.
     #[stable(feature = "nonzero", since = "1.28.0")]
     #[rustc_const_stable(feature = "const_nonzero_int_methods", since = "1.47.0")]
-    #[rustc_allow_const_fn_unstable(const_refs_to_cell)]
     #[must_use]
     #[inline]
     pub const fn new(n: T) -> Option<Self> {
         // SAFETY: Memory layout optimization guarantees that `Option<NonZero<T>>` has
         //         the same layout and size as `T`, with `0` representing `None`.
-        unsafe { ptr::read(ptr::addr_of!(n).cast()) }
+        unsafe { intrinsics::transmute_unchecked(n) }
     }
 
     /// Creates a non-zero without checking whether the value is non-zero.