问题描述
来自Scott Meyers 撰写的《Effective C++ 3rd edition》":
为了强调未定义行为的结果是不可预测的，并且可能会非常不愉快，有经验的 C++ 程序员经常说具有未定义行为的程序会擦除您的硬盘驱动器.
在什么情况下会发生这种情况?
例如，访问和写入数组范围之外的位置是否会损坏不属于此 C++ 程序或线程的内存?
可以吗?当然.事实上发生在我身上.
我编写了删除临时目录的代码.这涉及创建一个 recursive delete *.* 命令.由于一个错误， 字段并不总是被填充.我们的文件系统代码愉快地执行了 recursive delete *.* 命令.>
我的同事注意到桌面上的图标突然消失了.拿出两台机器.
From "Effective C++ 3rd edition by Scott Meyers":
Under what circumstances can this happen?
For example, can accessing and writing to locations out of array range corrupt memory that doesn't belong to this C++ program or thread?
Can it? Sure. Happened to me, in fact.
I wrote code to delete a temporary directory. That involved creating a recursive delete <temp directory>*.* command. Due to a bug, the <temp directory> field wasn't always filled in. Our file system code happily executed the recursive delete *.* command.
My colleagues noticed when the icons on their desktop suddenly disappeared. Took out two machines.
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