Re: [PATCH] selftests/bpf: ignore pointer types check with clang

[Andrea Righi]

On Fri, Apr 14, 2023 at 06:15:38PM +0200, Ilya Leoshkevich wrote:
> On Fri, Apr 14, 2023 at 08:15:03AM +0200, Andrea Righi wrote:
> > On Thu, Apr 13, 2023 at 09:56:00PM -0700, Alexei Starovoitov wrote:
> > > On Wed, Apr 12, 2023 at 2:59 AM Andrea Righi <andrea.righi@xxxxxxxxxxxxx> wrote:
> > > >
> > > > Building bpf selftests with clang can trigger errors like the following:
> > > >
> > > >   CLNG-BPF [test_maps] bpf_iter_netlink.bpf.o
> > > > progs/bpf_iter_netlink.c:32:4: error: incompatible pointer types assigning to 'struct sock *' from 'struct sock___17 *' [-Werror,-Wincompatible-pointer-types]
> > > >         s = &nlk->sk;
> > > >           ^ ~~~~~~~~
> > > > 1 error generated.
> > > 
> > > I cannot reproduce this and BPF CI doesn't complain about it either.
> > > What kind of clang do you use?
> > > Some special version and build flags?
> > 
> > I'm using Ubuntu clang version 15.0.7 (Ubuntu 23.04), no special build
> > flag (unless Ubuntu enables some different default flags, but it
> > shouldn't be the case... I'll double check).
> > 
> > -Andrea
> 
> Hi,
> 
> FWIW, I see similar errors when I don't use recent pahole.

I'm using pahole v1.24.

-Andrea