From c9227cf6d24e0bafee3ada499dea183446aa35b1 Mon Sep 17 00:00:00 2001
From: Pavel Kirienko <pavel.kirienko@gmail.com>
Date: Sun, 18 Jan 2015 01:34:16 +0300
Subject: [PATCH] Runtime check in linked list insert()

---
 libuavcan/include/uavcan/util/linked_list.hpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libuavcan/include/uavcan/util/linked_list.hpp b/libuavcan/include/uavcan/util/linked_list.hpp
index 963cee9f02..d36e83b463 100644
--- a/libuavcan/include/uavcan/util/linked_list.hpp
+++ b/libuavcan/include/uavcan/util/linked_list.hpp
@@ -100,6 +100,10 @@ template <typename T>
 void LinkedListRoot<T>::insert(T* node)
 {
     UAVCAN_ASSERT(node);
+    if (node == NULL)
+    {
+        return;
+    }
     remove(node);  // Making sure there will be no loops
     node->setNextListNode(root_);
     root_ = node;