can reuse the array when ((union alloc_header *)data)[-1].ref is zero.
Now you can make an informed decision
，详情可参考同城约会
Cheyenne MacDonald for Engadget，这一点在体育直播中也有详细论述
If you try to route from a map of France updated in May with a map of Germany updated in April, HH-Routing may not be compatible across the border. You would need to update all relevant maps to the same version.，更多细节参见爱思助手下载最新版本