tree f2b2a60e064db44c8929925e637705c871234198
parent 6fa39515f32be3e9a9814172c3701bc0441d359c
author HIGUCHI Yuta <y-higuchi@onlab.us> 1375563744 +0900
committer HIGUCHI Yuta <y-higuchi@onlab.us> 1375563744 +0900

Add null checks before toString