iocp.c文件iowatcher_poll_events函数中结构体强转问题
liuyuananfang opened this issue · comments
liuyuananfang commented
在iocp.c文件iowatcher_poll_events函数中有一行代码:hoverlapped_t* hovlp = (hoverlapped_t*)povlp;
疑问:将OVERLAPPED结构体对象强转为它的超集hoverlapped_t对象,OVERLAPPED结构体的成员比hoverlapped_t结构体的成员少,这样强转后,直接访问io等成员变量,这么做难道不会产生“内存越界访问”的问题吗?
liuyuananfang commented
没问题了,是我看错了,这个OVERLAPPED结构体对象是从overlapio.c文件int post_acceptex(hio_t* listenio, hoverlapped_t* hovlp)函数中传过来的