#define QUOTA (5*1024*1024*1024) uint64_t ui64 = QUOTA;
gcc编译器会报出：warning: integer overflow in expression，你发现哪里出问题了？以此为戒！
warning: integer overflow in expression (take this as a lesson)
原文：http://blog.csdn.net/demiaowu/article/details/43149833
