One concrete example is confusing value and pointer types in C. I've seen people try to cast a `uuid` variable into a `char` buffer to, for example, memset it, by doing `(const char *)&uuid)`. It turned out, however, that `uuid` was not a value type but rather a pointer, and so this ended up just blasting the stack because instead of taking the address of the uuid storage, it's taking the address of the pointer to the storage. If you're hundreds of lines deep and are looking for more complex functional issues, it's very easy to overlook.