当你在 C++ 中释放一个指针两次或更多次时会发生什么? [英] What happens when you deallocate a pointer twice or more in C++?

问题描述

int main() {
    Employee *e = new Employee();

    delete e;
    delete e;
    ...
    delete e;
    return 0;
}

推荐答案

如果您多次尝试通过指针删除一个对象，您会得到未定义行为.

You get undefined behaviour if you try to delete an object through a pointer more than once.

这意味着几乎任何事情都可能发生，从似乎可以工作"到崩溃"或完全随机的事情.

This means that pretty much anything can happen from 'appearing to work' to 'crashing' or something completely random.

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