From 390883e888c580d054ab4a2584c851aba50865e9 Mon Sep 17 00:00:00 2001
From: Mara Bos <m-ou.se@m-ou.se>
Date: Fri, 9 Oct 2020 00:06:39 +0200
Subject: [PATCH] Make Pin::new_static const.

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

diff --git a/library/core/src/pin.rs b/library/core/src/pin.rs
index cc93f0fa5fc..3f058124d2b 100644
--- a/library/core/src/pin.rs
+++ b/library/core/src/pin.rs
@@ -787,7 +787,8 @@ impl<T: ?Sized> Pin<&'static T> {
     /// This is safe, because the `'static` lifetime guarantees the data will
     /// never be moved.
     #[unstable(feature = "pin_static_ref", issue = "none")]
-    pub fn new_static(r: &'static T) -> Pin<&'static T> {
+    #[rustc_const_unstable(feature = "const_pin", issue = "76654")]
+    pub const fn new_static(r: &'static T) -> Pin<&'static T> {
         // SAFETY: The 'static lifetime guarantees the data will not be
         // moved/invalidated until it gets dropped (which is never).
         unsafe { Pin::new_unchecked(r) }