improve add() function

Congyuwang · Feb 18, 2024 · 5ba71ed · 5ba71ed
1 parent 0f4594f
commit 5ba71ed
Showing 1 changed file with 5 additions and 4 deletions.
diff --git a/src/lib.rs b/src/lib.rs
@@ -166,12 +166,13 @@ impl<T> ListHead<T> {
     /// is still complete.
     #[inline(always)]
     unsafe fn add(&mut self, other: &mut ListHead<T>) {
+        let next = self.next.assume_init_mut().as_mut();
+        let other_ptr = other.ptr();
+
         other.prev.write(self.ptr());
         other.next = self.next;
-
-        let next = self.next.assume_init_mut().as_mut();
-        next.prev.write(other.ptr());
-        self.next.write(other.ptr());
+        next.prev.write(other_ptr);
+        self.next.write(other_ptr);
     }
 
     #[inline(always)]