Re: [PATCH] genirq: ARM dyntick cleanup

[Giacomo A. Catenazzi]

Linus Torvalds wrote:
> 
> On Wed, 5 Jul 2006, Randy.Dunlap wrote:
>> OK, I'll bite.  What part of Linus's macro doesn't work.
> 
> Heh. This is "C language 101".
> 
> The reason we always write
> 
> 	#define empty_statement do { } while (0)
> 
> instead of
> 
> 	#define empty_statement /* empty */
> 
> is not that
> 
> 	if (x)
> 		empty_statement;
> 
> wouldn't work like Arjan claimed, but because otherwise the empty 
> statement won't parse perfectly as a real C statement.

But the classical way of empty statments is "((void) 0)"
See K&R, glibc or SuS, for assert.h
( http://www.opengroup.org/onlinepubs/000095399/basedefs/assert.h.html )

or I miss something?

ciao
	cate
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/