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Subject: Re: [PATCH v2] tests: do not fail on zero sized DIEs (binutils-2.39
 compatible)
From: Mark Wielaard <aegon@wildebeest.org>
To: Sergei Trofimovich <slyich@gmail.com>
Cc: elfutils-devel@sourceware.org
Date: Thu, 13 Oct 2022 16:40:36 +0200
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Hi,

On Mon, 2022-08-08 at 01:17 +0200, Mark Wielaard wrote:
> On Sun, Aug 07, 2022 at 07:31:38PM +0100, Sergei Trofimovich via
> Elfutils-devel wrote:
> > binutils started producing 0-sized DIEs on functions interspersed
> > by nested sections (".section ...; .previous). This led to
> > run-low_high_pc.sh failure in form of:
> >=20
> >     FAIL: run-low_high_pc.sh
> >     =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D
> >=20
> >     [b] main.c
> >     [2d] main
> >=20
> >     [b] ../sysdeps/i386/start.S
> >     [26] _start
> >     [40] ../sysdeps/x86/abi-note.c
> >     [b52] init.c
> >     [b8e] static-reloc.c
> >     [2dba] _dl_relocate_static_pie
> >     [2dd8] ../sysdeps/i386/crti.S
> >     [2def] _init
> >     lowpc: 8049000, highpc: 8049000lx
> >     ../sysdeps/i386/crti.S: [2def] '_init' highpc <=3D lowpc
> >     FAIL run-low_high_pc.sh (exit status: 255)
> >=20
> > To work it around let's allow lowpc =3D=3D highpc special case.
> >=20
> > https://sourceware.org/bugzilla/show_bug.cgi?id=3D29450
>=20
> Thanks for finding this and suggesting a workaround.  But lets first
> try to fix binutils. This seems like a pretty bad bug, lets hope it
> gets fixed soon. So we don't need these kind of workarounds.
>=20
> I added a comment to the binutils bug:
> https://sourceware.org/bugzilla/show_bug.cgi?id=3D29451#c2

Since this binutils bug was fixed I assume this patch isn't needed
anymore.

Thanks,

Mark