通过nm符号表定位memcpy内存越界问题

nm工具介绍

https://blog.csdn.net/qqyuanhao163/article/details/86540410

C/C++编译和链接过程详解 (重定向表，导出符号表，未解决符号表)

https://blog.csdn.net/neo_ustc/article/details/9024839

由memcpy越界引起的崩溃

https://blog.csdn.net/LostSpeed/article/details/78694979