This is common in many testing scenarios, enabling user data to hang around in memory until the user session times out, or until any caches in use get refreshed.

在许多测试场景中，这是很常见的，允许用户数据挂起在内存中，直到用户会话超时，或者直到刷新正在使用的任何缓存。

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Special system calls, or requests to the UNIX kernel, allocate and free the memory and set permissions; common read and write operations put and get data from the region.

用特殊的系统调用(即对UNIX内核的请求)分配和释放内存并设置权限；通过一般的读写操作读写内存段中的数据。

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In any common implementation, the "excess" characters overwrite other data in memory.

在任何常规实现中，“超过的”字符会覆盖内存中的其他数据。

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