tree b787df08db9a8fa2971d5ace1b8ec421a673be2e
parent 338e723331b83042379ad57b7d6b02e4cd21fb80
author Richard Palethorpe <rpalethorpe@suse.com> 1649760270 +0100
committer Richard Palethorpe <rpalethorpe@suse.com> 1650354878 +0100

tools/sparse: Allow null pointer subtraction

Used for the offsetof trick. Technically it is undefined behavior. A
patch to Sparse is waiting upstream:

https://lore.kernel.org/linux-sparse/20220321112119.23308-1-rpalethorpe@suse.com/T/#u

In the meantime we can disable the warning to make it compile.

Signed-off-by: Richard Palethorpe <rpalethorpe@suse.com>
Reviewed-by: Petr Vorel <pvorel@suse.cz>