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Date:   Wed, 8 Nov 2023 21:30:11 -0800
From:   Christoph Hellwig <hch@infradead.org>
To:     Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
Cc:     Christoph Hellwig <hch@infradead.org>,
        linux-sparse@vger.kernel.org, linux-xfs@vger.kernel.org
Subject: Re: sparse feature request: nocast integer types
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On Thu, Nov 09, 2023 at 06:21:05AM +0100, Luc Van Oostenryck wrote:
> Such 'nocast' attribute already exists and seems to do more or less what
> you would like:
> See Sparse docs at https://sparse.docs.kernel.org/en/latest/annotations.html
> :
> nocast <https://sparse.docs.kernel.org/en/latest/annotations.html#nocast>
> 
> This attribute is similar to bitwise but in a much weaker form. It warns
> about explicit or implicit casting to different types. However, it doesn’t
> warn about the mixing with other types and it easily gets lost: you can add
> plain integers to __nocast integer types and the result will be plain
> integers.

Hmm, that's a little suboptimal.  But still a lot better than nothing.
I'll see what I can do with them.

Thanks a lot!