https://blog.csdn.net/zhoujian0827/article/details/78354151
https://blog.csdn.net/shimadear/article/details/80291194
https://blog.csdn.net/fovwin/article/details/8170914
//软件编写时，应避免出现malloc(0)的情况。
malloc字节对齐 https://blog.csdn.net/kai8wei/article/details/78701531?depth_1-utm_source=distribute.pc_relevant.none-task-blog-BlogCommendFromBaidu-7&utm_source=distribute.pc_relevant.none-task-blog-BlogCommendFromBaidu-7
