From 0b20ce97f7cc1360190cb9c2b102cdee4f487de2 Mon Sep 17 00:00:00 2001
From: Dylan MacKenzie <ecstaticmorse@gmail.com>
Date: Sat, 8 Feb 2020 16:02:20 -0800
Subject: [PATCH] Make `num::NonZeroX::new` an unstable `const fn`

---
 src/libcore/num/mod.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/libcore/num/mod.rs b/src/libcore/num/mod.rs
index ed37b48b3e8..3ae8f0f7870 100644
--- a/src/libcore/num/mod.rs
+++ b/src/libcore/num/mod.rs
@@ -69,8 +69,9 @@ assert_eq!(size_of::<Option<core::num::", stringify!($Ty), ">>(), size_of::<", s
 
                 /// Creates a non-zero if the given value is not zero.
                 #[$stability]
+                #[rustc_const_unstable(feature = "const_nonzero_int_methods", issue = "53718")]
                 #[inline]
-                pub fn new(n: $Int) -> Option<Self> {
+                pub const fn new(n: $Int) -> Option<Self> {
                     if n != 0 {
                         // SAFETY: we just checked that there's no `0`
                         Some(unsafe { Self(n) })