X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=lib%2Flist.c;h=4ffa8837756c36264094bf4729eea26faedc0eaf;hb=b46ccdf582946f30d80735345c533c23a7f035c0;hp=8aedd7573656cbc4beedd514019c42a855bdb686;hpb=a14bc59fb8f27db193d74662dc9c5cb8237177ef;p=openvswitch

diff --git a/lib/list.c b/lib/list.c
index 8aedd757..4ffa8837 100644
--- a/lib/list.c
+++ b/lib/list.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2008, 2009 Nicira Networks.
+ * Copyright (c) 2008, 2009, 2010 Nicira Networks.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -24,6 +24,14 @@ list_init(struct list *list)
     list->next = list->prev = list;
 }
 
+/* Initializes 'list' with pointers that will (probably) cause segfaults if
+ * dereferenced and, better yet, show up clearly in a debugger. */
+void
+list_poison(struct list *list)
+{
+    memset(list, 0xcc, sizeof *list);
+}
+
 /* Inserts 'elem' just before 'before'. */
 void
 list_insert(struct list *before, struct list *elem)