[Bug sanitizer/80797] -fsanitize=null doesn't instrument &s->x

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80797

--- Comment #6 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
(In reply to Vittorio Zecca from comment #4)
> I applied your patch to version 8 trunk 247930 and it seems to work,
> but on your example I get 
> 
> ubsan-1.c:10:8: runtime error: member access within null pointer of type
> 'struct S'
> ubsan-1.c:11:8: runtime error: member access within null pointer of type
> 'struct S'

Thanks for testing.

> pointing at column 8 to v and v2.
> Shouldn't they point to s or i?

Yeah, they should.