Re: [PATCH] ptrdiff_t is not uintptr_t, damnit

David Brownell
2007-08-20T01:12:57Z

On Sunday 19 August 2007, Al Viro wrote:
> On Mon, Aug 20, 2007 at 01:27:13AM +0100, Anton Altaparmakov wrote:
>
> > And what the cast was doing I can't remember. I may well have just
> > copied it from the VFS or I was perhaps trying to silence a warning
> > and this happened to work...
>
> ... due to sparse bug (it miscalculated address space of pointed to,
> picking top-level qualifiers for some reason; __user pointer to char
> and pointer to __user char gave the same result and so did __user long).
> That cast still made no sense...

I could believe that all came from sparse bugs. Fixed now?