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Date:   Tue, 4 Oct 2022 09:15:27 -0300
From:   Arnaldo Carvalho de Melo <acme@kernel.org>
To:     Nick Clifton <nickc@redhat.com>
Cc:     Martin =?utf-8?B?TGnFoWth?= <mliska@suse.cz>,
        dwarves@vger.kernel.org
Subject: Re: Encountered error while encoding BTF due to Unsupported
 DW_TAG_unspecified_type(0x3b)
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Em Mon, Oct 03, 2022 at 01:07:14PM +0100, Nick Clifton escreveu:
> Hi Martin,
> 
> > I noticed one can't build 5.19 with latest binutils master.
> > 
> > One see the following error:
> > [ 1413s]   BTF     .btf.vmlinux.bin.o
> > [ 1413s] Unsupported DW_TAG_unspecified_type(0x3b)
> 
> >   <0><c>: Abbrev Number: 3 (DW_TAG_unspecified_type) <--- the problematic TAG
> 
> > Is it something pahole should handle?
> 
> Yes, I believe so.  The tag is a valid DWARF tag, and GDB wants it, so
> it would be good if pahole could support it.

I'll check and fix this, thanks for the report.

- Arnaldo