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Date: Mon, 8 Aug 2022 01:17:57 +0200
From: Mark Wielaard <mark@klomp.org>
To: Sergei Trofimovich <slyich@gmail.com>
Cc: Martin =?utf-8?B?TGnFoWth?= <mliska@suse.cz>, elfutils-devel@sourceware.org
Subject: Re: [PATCH v2] tests: do not fail on zero sized DIEs (binutils-2.39
 compatible)
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Hi Sergei,

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:
> 
>     FAIL: run-low_high_pc.sh
>     ========================
> 
>     [b] main.c
>     [2d] main
> 
>     [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 <= lowpc
>     FAIL run-low_high_pc.sh (exit status: 255)
> 
> To work it around let's allow lowpc == highpc special case.
> 
> https://sourceware.org/bugzilla/show_bug.cgi?id=29450

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.

I added a comment to the binutils bug:
https://sourceware.org/bugzilla/show_bug.cgi?id=29451#c2

Cheers,

Mark