Re: mount.h/radix.h

[David Cuthbert <dacut@xxxxxxxxx>]

Jeffrey Hsu wrote:
> Now that C99 defines a standard boolean type, _Bool, how about we just 
> change all the occurrences of boolean_t in the kernel to _Bool?

Ugh, please don't.

_Bool exists as a way of preventing clashes with existing typedefs; it 
is not intended for use in new code.

The proper C99 way is to #include <stdbool.h>, which then performs:

#define bool _Bool
#define true 1
#define false 0
#define __bool_true_false_are_defined 1

(or the equivalent -- it is guaranteed that all are usable in #if 
preprocessor macros).

I believe that gcc may be out of compliance here, but I haven't peeked 
at the latest versions.  (gcc was also missing the complex and imaginary 
types and associated #pragmas last I checked.)