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Date:   Tue, 4 Oct 2022 15:07:57 -0300
From:   Arnaldo Carvalho de Melo <acme@kernel.org>
To:     Arnaldo Carvalho de Melo <arnaldo.melo@gmail.com>
Cc:     Nick Clifton <nickc@redhat.com>,
        Martin =?utf-8?B?TGnFoWth?= <mliska@suse.cz>,
        Yonghong Song <yhs@fb.com>,
        Andrii Nakryiko <andrii.nakryiko@gmail.com>,
        dwarves@vger.kernel.org
Subject: Re: Encountered error while encoding BTF due to Unsupported
 DW_TAG_unspecified_type(0x3b)
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Em Tue, Oct 04, 2022 at 10:25:31AM -0300, Arnaldo Carvalho de Melo escreveu:
> On October 4, 2022 9:33:05 AM GMT-03:00, Nick Clifton <nickc@redhat.com> wrote:
> >Hi Arnaldo,
> >
> >>>   <0><c>: Abbrev Number: 3 (DW_TAG_unspecified_type) <--- the problematic TAG
> >
> >>>   <1><29>: Abbrev Number: 2 (DW_TAG_subprogram)
> >>>      <2a>   DW_AT_name        : (indirect string, offset: 0x2e): entry_ibpb
> >>>      <2e>   DW_AT_type        : <0xc>
> >
> >If it helps the tag is used to tell consumers like GDB that the return
> >type of specific functions (eg entry_ibpb in the above example) is unknown.
 
> Sure helps, thanks!
 
> I noticed this is for assembly source code, I'll add it as a special
> "type" and probably for BTF mask it to void.

s/mask/map/g
 
- Arnaldo