From: Eli Zaretskii <eliz@gnu.org>
To: Paul Eggert <eggert@cs.ucla.edu>
Cc: monnier@IRO.UMontreal.CA, emacs-devel@gnu.org
Subject: Re: Lisp_Marker size on 32bit systems
Date: Fri, 07 Sep 2018 20:16:58 +0300 [thread overview]
Message-ID: <83pnxptegl.fsf@gnu.org> (raw)
In-Reply-To: <ddfc41c9-227b-3d6c-164c-cbdebbb7ea62@cs.ucla.edu> (message from Paul Eggert on Fri, 7 Sep 2018 09:27:56 -0700)
> Cc: monnier@IRO.UMontreal.CA, emacs-devel@gnu.org
> From: Paul Eggert <eggert@cs.ucla.edu>
> Date: Fri, 7 Sep 2018 09:27:56 -0700
>
> On 09/07/2018 07:19 AM, Eli Zaretskii wrote:
> > I think GCC aligns the Lisp_Object array within the structures because
> > a Lisp_Object is an 8-byte data type in this configuration.
>
> That alignment is platform-dependent. On Fedora 28 configured
> --with-wide-int and with gcc -m32, a Lisp_Object is 8 bytes but its
> alignment is only 4 bytes. Apparently the alignment of 'long long' is 4
> on Fedora 28 x86, but 8 on MS-Windows x86.
Isn't it strange, though? Why would that be platform dependent?
Could it be due to GCC version differences (mine is 7.3.0)?
> I installed the attached; please give it a try.
Builds fine, thanks.
next prev parent reply other threads:[~2018-09-07 17:16 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-06 0:41 Lisp_Marker size on 32bit systems Stefan Monnier
2018-09-06 6:51 ` Paul Eggert
2018-09-06 12:17 ` Stefan Monnier
2018-09-07 7:15 ` Paul Eggert
2018-09-07 8:05 ` Eli Zaretskii
2018-09-07 13:45 ` Paul Eggert
2018-09-07 14:12 ` GDB and compiler-operations (was: Lisp_Marker size on 32bit systems) Stefan Monnier
2018-09-07 14:23 ` Eli Zaretskii
2018-09-07 15:16 ` GDB and compiler-operations Andreas Schwab
2018-09-07 15:48 ` GDB and compiler-operations (was: Lisp_Marker size on 32bit systems) Paul Eggert
2018-09-07 15:58 ` GDB and compiler-operations Stefan Monnier
2018-09-07 17:11 ` Eli Zaretskii
2018-09-07 17:15 ` Paul Eggert
2018-09-07 19:59 ` Tom Tromey
2018-09-07 14:19 ` Lisp_Marker size on 32bit systems Eli Zaretskii
2018-09-07 16:27 ` Paul Eggert
2018-09-07 17:16 ` Eli Zaretskii [this message]
2018-09-07 18:13 ` Paul Eggert
2018-09-07 18:32 ` Eli Zaretskii
2018-09-07 19:05 ` Paul Eggert
2018-09-07 19:22 ` Eli Zaretskii
2018-09-07 12:16 ` Stefan Monnier
2018-09-07 19:04 ` Paul Eggert
2018-09-07 19:45 ` Stefan Monnier
2018-09-07 21:03 ` Paul Eggert
2018-09-08 1:54 ` Stefan Monnier
2018-09-08 3:04 ` Paul Eggert
2018-09-08 3:10 ` Stefan Monnier
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