ref: 3011c53d36b4a3be4a583929a05e3da45f34ad94
parent: 72a5832a81f22b067f398df70ce0f6d9243db11d
author: Yaowu Xu <yaowu@google.com>
date: Fri Aug 8 04:56:24 EDT 2014
Fix a run-time integer overflow Change-Id: I87255d8a25ef8c7d235cbf3c8887d7bed7892cfe