UniqueRc: (Ref)UnwindSafe

Author: zachs18

library/alloc/src/rc.rs

@@ -3713,6 +3713,11 @@ impl<T: ?Sized, A: Allocator> !Send for UniqueRc<T, A> {}
 #[unstable(feature = "unique_rc_arc", issue = "112566")]
 impl<T: ?Sized, A: Allocator> !Sync for UniqueRc<T, A> {}
 
+#[unstable(feature = "unique_rc_arc", issue = "112566")]
+impl<T: UnwindSafe + ?Sized, A: Allocator + UnwindSafe> UnwindSafe for UniqueRc<T, A> {}
+#[unstable(feature = "unique_rc_arc", issue = "112566")]
+impl<T: RefUnwindSafe + ?Sized, A: Allocator + UnwindSafe> RefUnwindSafe for UniqueRc<T, A> {}
+
 #[unstable(feature = "unique_rc_arc", issue = "112566")]
 impl<T: ?Sized + Unsize<U>, U: ?Sized, A: Allocator> CoerceUnsized<UniqueRc<U, A>>
     for UniqueRc<T, A>