On Sat, 10 Mar 2007, Rusty Russell wrote: > On Fri, 2007-03-09 at 16:56 +1100, Rusty Russell wrote: > > __builtin_types_compatible_p() has been around since gcc 2.95, and we > > don't use it anywhere. This patch quietly fixes that. > > OK, many people complained that it needed a comment. Good point! > == > Add comment to ARRAY_SIZE macro. > > Signed-off-by: Rusty Russell <[EMAIL PROTECTED]> > > diff -r 933e410f204f include/linux/kernel.h > --- a/include/linux/kernel.h Sat Mar 10 09:55:31 2007 +1100 > +++ b/include/linux/kernel.h Sat Mar 10 09:55:53 2007 +1100 > @@ -35,6 +35,7 @@ extern const char linux_proc_banner[]; > #define ALIGN(x,a) __ALIGN_MASK(x,(typeof(x))(a)-1) > #define __ALIGN_MASK(x,mask) (((x)+(mask))&~(mask)) > > +/* GCC is awesome. */ > #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) > \ > + sizeof(typeof(int[1 - 2*!!__builtin_types_compatible_p(typeof(arr), \ > typeof(&arr[0]))]))*0)
ah, but is that "universe" kind of awesome, or the "hot dogs" kind of awesome? http://youtube.com/watch?v=0rYT0YvQ3hs rday -- ======================================================================== Robert P. J. Day Linux Consulting, Training and Annoying Kernel Pedantry Waterloo, Ontario, CANADA http://fsdev.net/wiki/index.php?title=Main_Page ======================================================================== - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
