From 81365cdff410e7289d54da93d56ca9addcdf12cc Mon Sep 17 00:00:00 2001
From: Greg Burd <greg@burd.me>
Date: Sat, 23 Mar 2024 11:53:13 -0400
Subject: [PATCH] snapshot v2/p5; destroy

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

diff --git a/include/sl.h b/include/sl.h
index 078db85..72d512e 100644
--- a/include/sl.h
+++ b/include/sl.h
@@ -836,6 +836,7 @@
             }                                                                                                                                         \
             if (SKIPLIST_MAX_HEIGHT == 1)                                                                                                             \
                 free(path);                                                                                                                           \
+            /* if we didn't preserve any nodes we can free this one */                                                                                \
             if (np == 0)                                                                                                                              \
                 free_node_blk;                                                                                                                        \
                                                                                                                                                       \
@@ -888,6 +889,12 @@
             node = next;                                                                                                                              \
         } while (node != NULL);                                                                                                                       \
                                                                                                                                                       \
+        node = slist->slh_pres;                                                                                                                       \
+        while (node) {                                                                                                                                \
+            next = node->field.sle.next[0];                                                                                                           \
+            prefix##skip_free_node_##decl(node);                                                                                                      \
+        }                                                                                                                                             \
+                                                                                                                                                      \
         free(slist->slh_head);                                                                                                                        \
         free(slist->slh_tail);                                                                                                                        \
         return 0;                                                                                                                                     \