From b247d9a7a9aa853ca3169b726e137c1dc4ab5d3c Mon Sep 17 00:00:00 2001
From: Ding Xiang Fei <dingxiangfei2009@protonmail.ch>
Date: Sat, 10 Aug 2024 21:11:07 +0800
Subject: [PATCH] derive(SmartPointer): register helper attributes

---
 core/src/marker.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/core/src/marker.rs b/core/src/marker.rs
index 6a83ec2eb1e0e..374fa086aecb7 100644
--- a/core/src/marker.rs
+++ b/core/src/marker.rs
@@ -1060,7 +1060,7 @@ pub trait FnPtr: Copy + Clone {
 }
 
 /// Derive macro generating impls of traits related to smart pointers.
-#[rustc_builtin_macro]
+#[rustc_builtin_macro(SmartPointer, attributes(pointee))]
 #[allow_internal_unstable(dispatch_from_dyn, coerce_unsized, unsize)]
 #[unstable(feature = "derive_smart_pointer", issue = "123430")]
 pub macro SmartPointer($item:item) {