On Thu, Mar 03, 2022 at 04:44:01AM +0530, Kumar Kartikeya Dwivedi wrote:
> On Thu, Mar 03, 2022 at 04:17:25AM IST, Alexei Starovoitov wrote:
> > On Tue, Mar 1, 2022 at 3:57 AM Kumar Kartikeya Dwivedi <memxor@gmail.com> wrote:
> > >
> > > On Tue, Mar 01, 2022 at 05:10:31PM IST, kernel test robot wrote:
> > > > Hi Kumar,
> > > >
> > > > Thank you for the patch! Perhaps something to improve:
> > > >
> > > > [auto build test WARNING on bpf-next/master]
> > > >
> > > > url:    https://github.com/0day-ci/linux/commits/Kumar-Kartikeya-Dwivedi/Fixes-for-bad-PTR_TO_BTF_ID-offset/20220301-150010
> > > > base:   https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
> > > > config: s390-randconfig-r021-20220301 (https://download.01.org/0day-ci/archive/20220301/202203011937.wMLpkfU3-lkp@intel.com/config)
> > > > compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project d271fc04d5b97b12e6b797c6067d3c96a8d7470e)
> > >
> > > The same warning is emitted on clang for all existing definitions, so I can
> > > respin with a fix for the warning like we do for GCC, otherwise it can also
> > > be a follow up patch.
> >
> > Separate patch is fine.
> > How do you plan on fixing it?
> > What is __diag_ignore equivalent for clang?
> 
> Hmm, looks like I'll have to add those in include/linux/compiler-clang.h. Quick
> local testing suggests it will work with _Pragma("clang diagnostic ignored ...").

I have a diff that mirrors the GCC infrastructure, which should work for
this, feel free to copy it:

https://lore.kernel.org/r/20210310225240.4epj2mdmzt4vurr3@archlinux-ax161/

If you want to shut up the warning for all supported versions of clang,
switch 130000 for 110000 and __diag_clang_11() for __diag_clang_13().

Cheers,
Nathan