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From: "mark at klomp dot org" <sourceware-bugzilla@sourceware.org>
To: debugedit@sourceware.org
Subject: [Bug debugedit/27639] Unknown DWARF DW_FORM_0x1f20 (GNU_ref_alt) and
 DWARF DW_FORM_0x1f21 (strp_alt)
Date: Wed, 20 Apr 2022 18:28:35 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D27639

Mark Wielaard <mark at klomp dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |mark at klomp dot org
            Summary|Unknown DWARF               |Unknown DWARF
                   |DW_FORM_0x1f20 and DWARF    |DW_FORM_0x1f20
                   |DW_FORM_0x1f21              |(GNU_ref_alt) and DWARF
                   |                            |DW_FORM_0x1f21 (strp_alt)

--- Comment #1 from Mark Wielaard <mark at klomp dot org> ---
(In reply to Matthias Klose from comment #0)
> debugedit warns about unknown sections DWARF DW_FORM_0x1f20 and DWARF
> DW_FORM_0x1f21, when called for a binary which has been processed by dwz.
>=20
> These warnings should not be emitted when debugedit is just called to cha=
nge
> the build-id.

How exactly are you calling debugedit? Which arguments are used?

And what exact warning do you see? unknown section names or unknown DWARF
FORMs?

In theory warnings about unknown forms should only be emitted when edit_dwa=
rf2
is called. Which is guarded by:

          if (!(do_build_id && no_recompute_build_id && !base_dir && !dest_=
dir)
              && name !=3D NULL && strcmp (name, ".debug_info") =3D=3D 0)
            edit_dwarf2 (dso);

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