Bug fix.

[pintos-anon] / src / lib / kernel / list.c

diff --git a/src/lib/kernel/list.c b/src/lib/kernel/list.c
index d80a74a09da7b59a2b8418ea2fd54f27a8068982..1227d6b6b5679f5c2708af027e0a69241684d613 100644 (file)
--- a/src/lib/kernel/list.c
+++ b/src/lib/kernel/list.c
@@ -78,7 +78,7 @@ list_begin (struct list *list)
 list_elem *
 list_next (list_elem *elem)
 {
-  ASSERT (is_interior (elem));
+  ASSERT (is_head (elem) || is_interior (elem));
   return elem->next;
 }