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From: Eli Zaretskii <eliz@gnu.org>
To: Pip Cet <pipcet@gmail.com>
Cc: eggert@cs.ucla.edu, 41321@debbugs.gnu.org, monnier@iro.umontreal.ca
Subject: bug#41321: 27.0.91; Emacs aborts due to invalid pseudovector objects
Date: Sat, 30 May 2020 19:45:24 +0300	[thread overview]
Message-ID: <83sgfhl6cb.fsf@gnu.org> (raw)
In-Reply-To: <CAOqdjBfjjujF-wCVJLdrYR-MZMYE3QNV200RZhP80z0pEwUX1w@mail.gmail.com> (message from Pip Cet on Sat, 30 May 2020 16:36:31 +0000)

> From: Pip Cet <pipcet@gmail.com>
> Date: Sat, 30 May 2020 16:36:31 +0000
> Cc: eggert@cs.ucla.edu, 41321@debbugs.gnu.org, 
> 	Stefan Monnier <monnier@iro.umontreal.ca>
> 
> On Sat, May 30, 2020 at 4:32 PM Eli Zaretskii <eliz@gnu.org> wrote:
> > > From: Pip Cet <pipcet@gmail.com>
> > > Date: Sat, 30 May 2020 13:29:33 +0000
> > > Cc: eggert@cs.ucla.edu, 41321@debbugs.gnu.org,
> > >       Stefan Monnier <monnier@iro.umontreal.ca>
> > > (The runtime stack isn't relevant, as far as I can tell, since we walk
> > > that in 4-byte steps on such systems anyway.)
> >
> > I think it might be relevant for stack-based Lisp objects (if we keep
> > requiring that Lisp objects are 8-byte aligned on 32-bit platforms).
> 
> We should never mark stack-based Lisp objects, no matter how
> well-aligned they are!

But we do require them to be aligned, at least in the current
codebase.  We actually had crashes in the past when the Windows build
didn't force GCC to align stack on 8-byte boundary in callback
functions.  I don't remember if this was related to GC or not, but the
requirement is definitely there.





  reply	other threads:[~2020-05-30 16:45 UTC|newest]

Thread overview: 132+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-16 10:33 bug#41321: 27.0.91; Emacs aborts due to invalid pseudovector objects Eli Zaretskii
2020-05-16 16:33 ` Paul Eggert
2020-05-16 16:47   ` Eli Zaretskii
2020-05-17 10:56 ` Pip Cet
2020-05-17 15:28   ` Eli Zaretskii
2020-05-17 15:57     ` Eli Zaretskii
2020-05-22  7:22       ` Eli Zaretskii
2020-05-22  8:35         ` Andrea Corallo
2020-05-22 11:04           ` Eli Zaretskii
2020-05-22 12:55             ` Andrea Corallo
2020-05-22 10:54         ` Eli Zaretskii
2020-05-22 11:47         ` Pip Cet
2020-05-22 12:13           ` Eli Zaretskii
2020-05-22 12:39             ` Pip Cet
2020-05-22 12:48               ` Eli Zaretskii
2020-05-22 14:04                 ` Pip Cet
2020-05-22 14:26                   ` Eli Zaretskii
2020-05-22 14:40                     ` Andrea Corallo
2020-05-22 19:03                       ` Eli Zaretskii
     [not found]                         ` <CAOqdjBdpU4U1NqErNH0idBmUxNeE3fL=2=KKpo9kbCM3DhW5gA@mail.gmail.com>
2020-05-23 17:58                           ` Andrea Corallo
2020-05-23 22:37                             ` Stefan Monnier
2020-05-23 22:41                               ` Pip Cet
2020-05-23 23:26                                 ` Stefan Monnier
2020-05-22 12:32           ` Eli Zaretskii
2020-05-29  9:51           ` Eli Zaretskii
2020-05-29 10:00             ` Pip Cet
2020-05-23 23:54         ` Pip Cet
2020-05-24 14:24           ` Eli Zaretskii
2020-05-24 15:00             ` Pip Cet
2020-05-24 16:25               ` Eli Zaretskii
2020-05-24 16:55                 ` Eli Zaretskii
2020-05-24 18:03                   ` Pip Cet
2020-05-24 18:40                     ` Eli Zaretskii
2020-05-24 19:40                       ` Pip Cet
2020-05-25  2:30                         ` Eli Zaretskii
2020-05-25  6:40                           ` Pip Cet
2020-05-25 11:28                             ` Pip Cet
2020-05-25 14:53                               ` Eli Zaretskii
2020-05-25 15:12                                 ` Stefan Monnier
2020-05-26  3:39                                 ` Paul Eggert
2020-05-26  3:33                               ` Paul Eggert
2020-05-26  6:18                                 ` Pip Cet
2020-05-26  7:51                                   ` Paul Eggert
2020-05-26  8:27                                     ` Pip Cet
2020-05-26  6:46                                 ` Paul Eggert
2020-05-26 15:17                                   ` Eli Zaretskii
2020-05-26 22:49                                     ` Paul Eggert
2020-05-27 15:26                                       ` Eli Zaretskii
2020-05-27 16:58                                         ` Paul Eggert
2020-05-27 17:33                                           ` Eli Zaretskii
2020-05-27 17:53                                             ` Paul Eggert
2020-05-27 18:24                                               ` Eli Zaretskii
2020-05-27 18:39                                                 ` Paul Eggert
2020-05-28  2:43                                               ` Stefan Monnier
2020-05-28  7:27                                                 ` Eli Zaretskii
2020-05-28  7:41                                                   ` Paul Eggert
2020-05-28 13:30                                                     ` Stefan Monnier
2020-05-28 14:28                                                       ` Pip Cet
2020-05-28 16:24                                                         ` Stefan Monnier
2020-05-29  9:43                                                         ` Pip Cet
2020-05-29 18:31                                                           ` Paul Eggert
2020-05-29 18:37                                                             ` Pip Cet
2020-05-29 19:32                                                               ` Paul Eggert
2020-05-29 19:37                                                                 ` Pip Cet
2020-05-29 20:26                                                                 ` Stefan Monnier
2020-05-29 20:40                                                                   ` Paul Eggert
2020-05-30  5:54                                                                     ` Eli Zaretskii
2020-05-30 17:52                                                                       ` Paul Eggert
2020-05-30 18:11                                                                         ` Eli Zaretskii
2020-05-30 18:17                                                                           ` Paul Eggert
2020-05-30  5:51                                                                   ` Eli Zaretskii
2020-05-30 14:26                                                                     ` Stefan Monnier
2020-05-27 17:57                                           ` Pip Cet
2020-05-27 18:39                                             ` Paul Eggert
2020-05-27 18:56                                               ` Pip Cet
2020-05-28  1:21                                                 ` Paul Eggert
2020-05-28  6:31                                                   ` Pip Cet
2020-05-28  7:47                                                     ` Paul Eggert
2020-05-28  8:11                                                       ` Pip Cet
2020-05-28 18:27                                           ` Eli Zaretskii
2020-05-28 19:33                                             ` Paul Eggert
2020-05-29  6:19                                               ` Eli Zaretskii
2020-05-29 20:24                                                 ` Paul Eggert
2020-05-29 21:01                                                   ` Pip Cet
2020-05-30  5:58                                                     ` Eli Zaretskii
2020-05-30  7:19                                                       ` Pip Cet
2020-05-30  9:08                                                         ` Eli Zaretskii
2020-05-30 11:06                                                           ` Pip Cet
2020-05-30 11:31                                                             ` Eli Zaretskii
2020-05-30 13:29                                                               ` Pip Cet
2020-05-30 16:32                                                                 ` Eli Zaretskii
2020-05-30 16:36                                                                   ` Pip Cet
2020-05-30 16:45                                                                     ` Eli Zaretskii [this message]
2020-05-30 18:04                                                                 ` Paul Eggert
2020-05-30 18:12                                                                   ` Pip Cet
2020-05-30 18:16                                                                   ` Eli Zaretskii
2020-05-30 18:45                                                                     ` Paul Eggert
2020-05-30 18:39                                                                   ` Pip Cet
2020-05-30 18:57                                                                     ` Paul Eggert
2020-05-30 19:06                                                                       ` Pip Cet
2020-05-30 21:27                                                                         ` Paul Eggert
2020-05-30 21:49                                                                           ` Pip Cet
2020-05-30 22:23                                                                             ` Paul Eggert
2020-05-30 22:54                                                                               ` Pip Cet
2020-05-30 16:31                                                     ` Paul Eggert
2020-05-30 16:42                                                       ` Eli Zaretskii
2020-05-30 17:06                                                         ` Paul Eggert
2020-05-30 17:22                                                           ` Eli Zaretskii
2020-05-30 18:12                                                             ` Paul Eggert
2020-05-30 18:21                                                               ` Eli Zaretskii
2020-05-30 19:14                                                                 ` Paul Eggert
2020-05-30 19:33                                                                   ` Eli Zaretskii
2020-05-30 22:18                                                                     ` Paul Eggert
2020-05-31 15:48                                                                       ` Eli Zaretskii
2020-06-01 14:48                                                                         ` Eli Zaretskii
2020-09-27 14:39                                                                           ` Lars Ingebrigtsen
2020-09-27 14:45                                                                             ` Pip Cet
2020-09-27 15:02                                                                               ` Lars Ingebrigtsen
2020-09-27 15:16                                                                             ` Eli Zaretskii
2020-05-30 16:53                                                       ` Pip Cet
2020-05-30  5:50                                                   ` Eli Zaretskii
2020-05-29  8:25                                               ` Pip Cet
2020-05-25 15:14                             ` Eli Zaretskii
2020-05-25 17:41                               ` Pip Cet
2020-05-24 19:00               ` Andy Moreton
2020-05-24 19:09                 ` Pip Cet
2020-05-29 10:16         ` Eli Zaretskii
2020-05-29 10:34           ` Pip Cet
2020-05-29 10:55             ` Eli Zaretskii
2020-05-29 11:47               ` Pip Cet
2020-05-29 13:52                 ` Eli Zaretskii
2020-05-29 14:19                   ` Pip Cet

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