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bug#41321: 27.0.91; Emacs aborts due to invalid pseudovector objects
From: |
Eli Zaretskii |
Subject: |
bug#41321: 27.0.91; Emacs aborts due to invalid pseudovector objects |
Date: |
Wed, 27 May 2020 18:26:36 +0300 |
> Cc: pipcet@gmail.com, 41321@debbugs.gnu.org, monnier@iro.umontreal.ca
> From: Paul Eggert <eggert@cs.ucla.edu>
> Date: Tue, 26 May 2020 15:49:24 -0700
>
> > On non-USE_LSB_TAG systems, GCALIGNMENT is 1, so this doesn't look
> > right (or maybe I'm missing something).
>
> Good point; I'd neglected that. I.e., on !USE_LSB_TAG systems the proposed
> emacs-27 patch is overly-conservative, as it causes maybe_lisp_pointer to
> always
> return true. Although this hurts GC performance it doesn't affect correctness
> and the patch does fix a crash on USE_LSB_TAG systems, so it (or something
> like
> it) is needed for emacs-27.
We used to rely on 8-byte alignment on those systems, and I don't see
any reason not to continue relying on that and punishing those
systems' performance. What would we gain?
- bug#41321: 27.0.91; Emacs aborts due to invalid pseudovector objects, (continued)
- bug#41321: 27.0.91; Emacs aborts due to invalid pseudovector objects, Paul Eggert, 2020/05/25
- bug#41321: 27.0.91; Emacs aborts due to invalid pseudovector objects, Pip Cet, 2020/05/26
- bug#41321: 27.0.91; Emacs aborts due to invalid pseudovector objects, Paul Eggert, 2020/05/26
- bug#41321: 27.0.91; Emacs aborts due to invalid pseudovector objects, Pip Cet, 2020/05/26
- bug#41321: 27.0.91; Emacs aborts due to invalid pseudovector objects, Paul Eggert, 2020/05/26
- bug#41321: 27.0.91; Emacs aborts due to invalid pseudovector objects, Eli Zaretskii, 2020/05/26
- bug#41321: 27.0.91; Emacs aborts due to invalid pseudovector objects, Paul Eggert, 2020/05/26
- bug#41321: 27.0.91; Emacs aborts due to invalid pseudovector objects,
Eli Zaretskii <=
- bug#41321: 27.0.91; Emacs aborts due to invalid pseudovector objects, Paul Eggert, 2020/05/27
- bug#41321: 27.0.91; Emacs aborts due to invalid pseudovector objects, Eli Zaretskii, 2020/05/27
- bug#41321: 27.0.91; Emacs aborts due to invalid pseudovector objects, Paul Eggert, 2020/05/27
- bug#41321: 27.0.91; Emacs aborts due to invalid pseudovector objects, Eli Zaretskii, 2020/05/27
- bug#41321: 27.0.91; Emacs aborts due to invalid pseudovector objects, Paul Eggert, 2020/05/27
- bug#41321: 27.0.91; Emacs aborts due to invalid pseudovector objects, Stefan Monnier, 2020/05/27
- bug#41321: 27.0.91; Emacs aborts due to invalid pseudovector objects, Eli Zaretskii, 2020/05/28
- bug#41321: 27.0.91; Emacs aborts due to invalid pseudovector objects, Paul Eggert, 2020/05/28
- bug#41321: 27.0.91; Emacs aborts due to invalid pseudovector objects, Stefan Monnier, 2020/05/28
- bug#41321: 27.0.91; Emacs aborts due to invalid pseudovector objects, Pip Cet, 2020/05/28