c - C如何保护指针内存？

Question

给定:

int a = 1;
int *p = &a;
int b = -1;
*++p = 2;

如果在内存中两个 a 和 b 彼此相邻写入的情况下，是否有任何东西可以阻止 b 从 -1 覆盖到 2？

Answer 1

How does C protect pointer memory?

事实并非如此。

Is there anything that prevents b from being over written from -1 to 2 if in the unlikely event the two a and b were written next to each other in memory?

没有。

这两个变量“在内存中彼此相邻”并不是不可能的。

如果你不小心的话，C 会给你造成很多问题的能力。