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SubjectRe: [PATCH] Use NULL instead of integer 0 in security/selinux/

Denis Vlasenko wrote:
> On Thursday 08 July 2004 19:52, Timothy Miller wrote:
>>Linus Torvalds wrote:
>>>I've seen too damn many people mistake NULL and NUL (admit it, you've
>>>seen it too), and I've seen code like
>>> char c = NULL;
>>THIS is simply a case of the programmer not understanding what NULL
>>means. When I use '0' for a pointer, I know EXACTLY what I mean, and I
>>also know when '0' might be ambiguous, and when I don't know what I'm
>>allowed to do, then I play it REALLY safe and typecast 0 to exactly the
>>pointer type I need.
> The question is, whether readers of your code (including compiler)
> will be able to be sure that there is no error in
> f(a,b,c,d,e,0,f,g,h);
> statement or not. Better typecheck that 0.

This I agree with, definately. It's very important to make your code
readable, and if it's not obvious from context, make it obvious. Cases
like the above are one of the reasons I like languages like Verilog
where you can pass parameters by specifying the parameter name.

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