Re: [PATCH 2.6.18-rc4-mm2] Generic boolean (was: Re: Generic booleans in -mm)

Hi,


There has been concern about adding other values then 0 and 1. There has been
ideas to do something like:
bool b = i & 1 : 0;

I think you miseed a '?'

bool b = (i & 1) ? : 0;

/*or*/
bool b = !!i;

but all that is needed is just a casting:

bool b = (bool) i;

No casting needed (in fact, casting is more evil than !!). If bool is a
bool, then the compiler will (hopefully) ensure that b will only get
values valid for bools.

$ cat x.c
#include <stdbool.h>
#include <stdio.h>

int main(int argc, const char **argv) {
_Bool b = argc;
printf("%d\n", (int)b);
return 0;
}
$ ./a.out
1



Jan Engelhardt
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