Re: [PATCH v2] tracing: Make is_signed_type() compatible with sparse

[Bart Van Assche]

On 8/31/26 1:44 PM, David Laight wrote:
> On Fri,  7 Aug 2026 10:00:56 -0700
> Bart Van Assche <bvanassche@xxxxxxx> wrote:
>
> > Using a __bitwise type in a tracing __field() definition triggers four
> > sparse warnings in stage 4 of expanding the TRACE_EVENT() macro. These
> > warnings are triggered by the is_signed_type() macro implementation.
> > Fix this by using _Generic() in the is_signed_type() implementation
> > instead of an integer comparison.
>
> Does adding __force to the LH cast remove the warning?
> Is so that would be a much better fix.
I have tried this, but unfortunately this doesn't suppress the sparse
complaints about the casts in the is_signed_type() implementation.

Thanks,

Bart.