Re: [PATCH] s390 (7/13): gcc 3.3 adaptions.

[Richard Henderson]

On Mon, Feb 24, 2003 at 01:02:39PM -0800, Linus Torvalds wrote:
> Does gcc still warn about things like
> 
> 	#define COUNT (sizeof(array)/sizeof(element))
> 
> 	int i;
> 	for (i = 0; i < COUNT; i++)
> 		...
> 
> where COUNT is obviously unsigned (because sizeof is size_t and thus 
> unsigned)?

Yes.  We don't do complete value-range propagation to figure
out if a warning is needed.  We only look at the comparison
itself and note that one of the arguments changed signedness
due to forced promotions.

r~