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SubjectRe: [PATCH] 2.4.22pre10: {,un}likely_p() macros for pointers
Date
David S. Miller <davem@redhat.com> wrote:
>
> I believe the C language allows for systems where the NULL pointer is
> not zero.

It does. However it also says that whenever a pointer is compared
with the integer constant 0 it must be equal if and only if it is
a NULL pointer.

An integer constant expression with the value 0, or such an expression
cast to type void *, is called a null pointer constant.
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