From: Lai Jiangshan <laijs@cn.fujitsu.com>
Date: Sat, 13 Oct 2012 16:46:45 +0000 (-0400)
Subject: test_urcu_lfq: test for the proper pointer
X-Git-Tag: v0.8.0~189
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=747b5930591527b65ad737ba609a59106ec2e89b;p=urcu.git

test_urcu_lfq: test for the proper pointer

We should use "if (qnode)" instead of "if (node)" in case of
the struct cds_lfq_node_rcu is not the first field of struct node.

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
---

diff --git a/tests/test_urcu_lfq.c b/tests/test_urcu_lfq.c
index 39e0351..1bbaf3c 100644
--- a/tests/test_urcu_lfq.c
+++ b/tests/test_urcu_lfq.c
@@ -243,14 +243,15 @@ void *thr_dequeuer(void *_count)
 
 	for (;;) {
 		struct cds_lfq_node_rcu *qnode;
-		struct test *node;
 
 		rcu_read_lock();
 		qnode = cds_lfq_dequeue_rcu(&q);
-		node = caa_container_of(qnode, struct test, list);
 		rcu_read_unlock();
 
-		if (node) {
+		if (qnode) {
+			struct test *node;
+
+			node = caa_container_of(qnode, struct test, list);
 			call_rcu(&node->rcu, free_node_cb);
 			URCU_TLS(nr_successful_dequeues)++;
 		}