ref: e2d6e37a545e817322cf82c5f3b2264140977fb8
parent: 09aca3089f7d35febb2454ce49c7c95cc22be92f
parent: b47cef056e51751d5d7b1cb50f91a71110294a9c
author: Yaowu Xu <yaowu@google.com>
date: Thu Oct 10 09:38:16 EDT 2013
Merge "change to avoid out-of-range computation"