Warning for different pointer signedness

[Joe Buck]

On Mon, Dec 20, 2004 at 04:46:01PM -0800, Mike Stump wrote:
> Since the impact of the recent change to always warn for this invalid 
> code seems larger than what people were expecting, do we want to 
> consider adding a flag to add the extension or to otherwise inhibit the 
> warning? If yes, what should it be called -fsigned-conversions or 
> -Wsigned-conversions?

I'm kind of curious about how often it shows up.  Are people who build
distros seeing lots of new warnings?