解引用一个空指针 [英] Dereferencing a null pointer

问题描述

为什么我无法提领一空指针？也就是说，我为什么不能读/写内存，地址仅仅是0？

Why I can't dereference a null pointer? That is, why I can't read/write memory which address is simply 0?

我的过程中的基指针有不同的地址？如果是的话，有没有办法获得适合我的过程中的默认堆？

Does the base pointer of my process have a different address? If yes, is there a way to obtain the lower memory adders available for the default heap of my process?

推荐答案

一个空指针不是指针，以记忆[其]地址只是0。这只是一个特殊的指针，不指向任何有效的。

A null pointer is not a pointer to "memory [whose] address is simply 0". It's just a special pointer that doesn't point to anything valid.

C语言说有上取消引用一个空指针程序的行为没有任何要求。

The C language says that there are no requirements on the behaviour of a program that dereferences a null pointer.

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