From 5c27fb2b27936387212de5a7d5736bc98cb6d42a Mon Sep 17 00:00:00 2001
From: Greg Burd <greg@burd.me>
Date: Sun, 17 Mar 2024 15:00:59 -0400
Subject: [PATCH] fixing

---
 include/sl.h | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/include/sl.h b/include/sl.h
index d8c7104..88ad7f0 100644
--- a/include/sl.h
+++ b/include/sl.h
@@ -280,7 +280,12 @@ struct sl_trace {
       __path[__i]->field.sle_next[__i] = (listelm);			\
     }									\
     (listelm)->field.sle_prev = __elm;					\
-    __elm->field.sle_next[0]->field.sle_prev = (listelm);		\
+    if ((listelm)->field.sle_prev == (struct type *)(head)->slh_head) {	\
+      (head)->slh_head[0] = (listelm);					\
+    }									\
+    if ((listelm)->field.sle_next[0] == (head)->slh_tail) {		\
+      (head)->slh_tail = (listelm);					\
+    }									\
     (head)->length++;							\
     ARRAY_FREE(__path);							\
   } while (0)