From bd194da4c2116e2461f8dfee51c12d343a62f53e Mon Sep 17 00:00:00 2001
From: inquisitivecrystal
 <22333129+inquisitivecrystal@users.noreply.github.com>
Date: Fri, 23 Jul 2021 18:12:32 -0700
Subject: [PATCH] Implement `RefUnwindSafe` for `Rc<T>`

---
 library/alloc/src/rc.rs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/library/alloc/src/rc.rs b/library/alloc/src/rc.rs
index c0ca068de9c..4fb2f0c8530 100644
--- a/library/alloc/src/rc.rs
+++ b/library/alloc/src/rc.rs
@@ -318,6 +318,8 @@ impl<T: ?Sized> !marker::Sync for Rc<T> {}
 
 #[stable(feature = "catch_unwind", since = "1.9.0")]
 impl<T: RefUnwindSafe + ?Sized> UnwindSafe for Rc<T> {}
+#[stable(feature = "rc_ref_unwind_safe", since = "1.58.0")]
+impl<T: RefUnwindSafe + ?Sized> RefUnwindSafe for Rc<T> {}
 
 #[unstable(feature = "coerce_unsized", issue = "27732")]
 impl<T: ?Sized + Unsize<U>, U: ?Sized> CoerceUnsized<Rc<U>> for Rc<T> {}