On Wed, Sep 16, 2020 at 11:06:27AM +0200, Jiri Olsa wrote:
> On Tue, Sep 15, 2020 at 02:17:46PM +0200, Jiri Olsa wrote:
>
> SNIP
>
> > <2><140d7aa>: Abbrev Number: 3 (DW_TAG_formal_parameter)
> > <140d7ab> DW_AT_type : <0x140cfb6>
> > <2><140d7af>: Abbrev Number: 3 (DW_TAG_formal_parameter)
> > <140d7b0> DW_AT_type : <0x1406176>
> > <2><140d7b4>: Abbrev Number: 3 (DW_TAG_formal_parameter)
> > <140d7b5> DW_AT_type : <0x14060c9>
> > <2><140d7b9>: Abbrev Number: 0
> >
> > the latter is just declaration.. but it's missing the
> > <365d69d> DW_AT_declaration : 1
> >
> > so it goes through pahole's function processing:
> >
> > cu__encode_btf:
> > ...
> > cu__for_each_function(cu, core_id, fn) {
> > int btf_fnproto_id, btf_fn_id;
> >
> > if (fn->declaration || !fn->external)
> > continue;
> > ...
> >
> >
> > CC-ing Frank.. any idea why is the DW_AT_declaration : 1 missing?
>
> looks like gcc issue:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97060
>
> let's see ;-)
so this gcc bug did not disappear and the fix might be delayed,
as I was told it's real complex and difficult to fix
and it's no longer just rawhide issue, because I just started to
see it in Fedora 32 after updating to gcc (GCC) 10.2.1 20201005
(Red Hat 10.2.1-5)
I'm checking on pahole's workaround, but so far I can't see dwarf
based solution for that.. any thoughts/ideas? ;-)
thanks,
jirka
