如果有不怀好意的使用者覆写缓冲区，则会变更标志的值，从而指出攻击者是非法存取专用文件。

If a malicious user can overwrite the buffer, then the value of the flag can be changed, thus providing the attacker with illegal access to private files.

youdao

可能没有足够的磁盘空间来完成该文件的写操作，或者由于没有足够的内存可用，分配缓冲区可能失败。

There might not be enough disk space to complete the file write operation, or allocating the buffer could fail if not enough memory is available.

youdao

为了说明这一情况，让我们研究一个简单示例，该示例演示了从同一个缓冲区读和写一个字符。

Having said that, let's examine a quick example to demonstrate writing and reading a char from the same buffer.

youdao