Re: [PATCH] ptrdiff_t is not uintptr_t, damnit

Al Viro
2007-08-20T00:53:16Z

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...