Re: RFC: booleans and the kernel

H. Peter Anvin
2002-01-24T19:29:27Z

Followup to: <3C5047A2.1AB65595@mandrakesoft.com>
By author: Jeff Garzik <jgarzik@mandrakesoft.com>
In newsgroup: linux.dev.kernel
>
> A small issue...
>
> C99 introduced _Bool as a builtin type. The gcc patch for it went into
> cvs around Dec 2000. Any objections to propagating this type and usage
> of 'true' and 'false' around the kernel?
>
> Where variables are truly boolean use of a bool type makes the
> intentions of the code more clear. And it also gives the compiler a
> slightly better chance to optimize code [I suspect].
>
> Actually I prefer 'bool' to '_Bool', if this becomes a kernel standard.
>

Noone is actually meant to use _Bool, except perhaps in header files.

#include <stdbool.h>

... then use "bool", "true", "false".

This is fine with me as long our version of stdbool.h contain the
appropriate ifdefs.

-hpa
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