GNU bug report logs - #45214
guile segfaults on 32-bit big-endian targets

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Message #41 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Efraim Flashner <efraim <at> flashner.co.il>
To: John Paul Adrian Glaubitz <glaubitz <at> physik.fu-berlin.de>
Cc: bug-guile <at> gnu.org, Helge Deller <deller <at> gmx.de>,
 John David Anglin <dave.anglin <at> bell.net>,
 Andreas Schwab <schwab <at> linux-m68k.org>,
 Michael Karcher <debian <at> mkarcher.dialup.fu-berlin.de>
Subject: Re: guile segfaults on 32-bit big-endian targets
Date: Thu, 25 Feb 2021 17:24:04 +0200

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On Sat, Dec 12, 2020 at 11:02:47PM +0100, John Paul Adrian Glaubitz wrote:
> Hi!
> 
> On 12/12/20 11:00 PM, John David Anglin wrote:
> > Trying to bisect.
> 
> Bisecting lead me to this which I guess is just painting over the real
> problem:
> 
> (sid_powerpc-dchroot)glaubitz <at> perotto:~/guile-git$ git bisect good
> a68c80c747a2a8ec92fa84684ebd60b4ecb7ffa0 is the first bad commit
> commit a68c80c747a2a8ec92fa84684ebd60b4ecb7ffa0
> Author: Andy Wingo <wingo <at> pobox.com>
> Date:   Mon May 11 15:22:29 2020 +0200
> 
>     Switch to baseline compiler for bootstrap/
> 
>     * bootstrap/Makefile.am (GUILE_OPTIMIZATIONS): Add -Ono-cps so that we
>       use the baseline compiler when bootstrapping.
> 
>  bootstrap/Makefile.am | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> (sid_powerpc-dchroot)glaubitz <at> perotto:~/guile-git$
> 

I came to the same conclusion when I tried to bisect the git repo
between 3.0.2 and 3.0.3 on my powerpc machine. By reverting that commit
I was able to build 44ad8fbde55df452ac1c88427662403e7af5b9bb (3.0.2-70,
6 commit later) but wasn't able to build 3.0.3. I started the build
without any precompiled bootstrap .go files.

-- 
Efraim Flashner   <efraim <at> flashner.co.il>   אפרים פלשנר
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