From 7f903c6dc77b92f1e6f3a27b38c2513966cf187c Mon Sep 17 00:00:00 2001
From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Fri, 15 Nov 2024 16:06:41 +0000
Subject: [PATCH] demo: break out append_raw

---
 src/test/demo.rs | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/src/test/demo.rs b/src/test/demo.rs
index e5513c8..6e67858 100644
--- a/src/test/demo.rs
+++ b/src/test/demo.rs
@@ -49,13 +49,20 @@ impl<T: Debug> List<T> {
 
     pub fn append(&mut self, data: T) {
         let node = Node {
-            back: self.head,
+            back: None,
             next: None,
             data,
         };
         let node = Ptr::new_heap(node);
+        self.append_raw(node)
+    }
+
+    fn append_raw(&mut self, node: P<T>) {
+        let mut tok = self.noalias.token_mut();
+        node.borrow_mut(&mut tok).back = self.head;
+        node.borrow_mut(&mut tok).next = None;
         if let Some(old_tail) = self.tail {
-            old_tail.borrow_mut(&mut self.noalias).next = Some(node);
+            old_tail.borrow_mut(&mut tok).next = Some(node);
         } else {
             self.head = Some(node);
         };
-- 
2.30.2