From 18afbb6ed2f98e55ae5cc10578e54762232a2437 Mon Sep 17 00:00:00 2001
From: Taiki Endo <te316e89@gmail.com>
Date: Sun, 5 Nov 2023 22:23:07 +0900
Subject: [PATCH] epoch: Fix build error with loom

---
 crossbeam-epoch/src/atomic.rs | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/crossbeam-epoch/src/atomic.rs b/crossbeam-epoch/src/atomic.rs
index 706ba86a4..028b9bf9c 100644
--- a/crossbeam-epoch/src/atomic.rs
+++ b/crossbeam-epoch/src/atomic.rs
@@ -302,12 +302,21 @@ impl<T: ?Sized + Pointable> Atomic<T> {
     ///
     /// let a = Atomic::<i32>::null();
     /// ```
+    #[cfg(not(crossbeam_loom))]
     pub const fn null() -> Atomic<T> {
         Self {
             data: AtomicPtr::new(ptr::null_mut()),
             _marker: PhantomData,
         }
     }
+    /// Returns a new null atomic pointer.
+    #[cfg(crossbeam_loom)]
+    pub fn null() -> Atomic<T> {
+        Self {
+            data: AtomicPtr::new(ptr::null_mut()),
+            _marker: PhantomData,
+        }
+    }
 
     /// Loads a `Shared` from the atomic pointer.
     ///