Re: [RFC][PATCH] A generic boolean (version 4)

From: Jeff Garzik
Date: Sun Jul 23 2006 - 17:43:23 EST

Jan Engelhardt wrote:
+#define false false
+#define true true
Can someone please tell me what advantage 'define true true' is going to
bring, besides than being able to '#ifdef true'?

(a) makes type information available to the C compiler, where a plain #define
does not.

Do you mean preprocessor? C already knows about true from the enum.

I was describing the overall purpose of the enum + #define change, when you take my "(a)" and "(b)" in sum.

(b) handles all '#ifndef true' statements properly

Holy *, is there _really_ code in linux/ that depends on true being [not] defined?

I suggest re-reading the boolean patches in this thread, to answer that question...

Programmer wanting to use boolean inevitably add an '#ifndef true' or '#ifndef TRUE' style statement to their code.


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