From: "Gerd Möllmann" <gerd.moellmann@gmail.com>
To: Pip Cet <pipcet@protonmail.com>
Cc: Eli Zaretskii <eliz@gnu.org>, Paul Eggert <eggert@cs.ucla.edu>,
75322@debbugs.gnu.org
Subject: bug#75322: SAFE_ALLOCA assumed to root Lisp_Objects/SSDATA(string)
Date: Sun, 05 Jan 2025 12:27:33 +0100 [thread overview]
Message-ID: <m2jzb9v6u2.fsf@gmail.com> (raw)
In-Reply-To: <87a5c5cxso.fsf@protonmail.com> (Pip Cet's message of "Sun, 05 Jan 2025 11:21:17 +0000")
Pip Cet <pipcet@protonmail.com> writes:
> However, I don't fully understand which additional protections
> traditional GC offers: is it always unsafe to use an SDATA obtained
> before a GC run after the GC run completes, or is there a more
> complicated set of rules?
There is this, which is used in the byte interpreter, IIRC, as sort of a
workaround for the problem
#ifndef HAVE_MPS
/* Pin a unibyte string in place so that it won't move during GC. */
void
pin_string (Lisp_Object string)
{
next prev parent reply other threads:[~2025-01-05 11:27 UTC|newest]
Thread overview: 78+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-01-03 17:20 bug#75322: SAFE_ALLOCA assumed to root Lisp_Objects/SSDATA(string) Pip Cet via Bug reports for GNU Emacs, the Swiss army knife of text editors
2025-01-03 19:55 ` Gerd Möllmann
2025-01-03 20:34 ` Gerd Möllmann
2025-01-03 20:48 ` Pip Cet via Bug reports for GNU Emacs, the Swiss army knife of text editors
2025-01-04 4:40 ` Gerd Möllmann
2025-01-04 7:57 ` Eli Zaretskii
2025-01-04 8:47 ` Gerd Möllmann
2025-01-04 9:56 ` Eli Zaretskii
2025-01-04 10:20 ` Gerd Möllmann
2025-01-05 13:30 ` Eli Zaretskii
2025-01-05 14:11 ` Gerd Möllmann
2025-01-05 17:45 ` Eli Zaretskii
2025-01-05 18:17 ` Gerd Möllmann
2025-01-05 19:07 ` Eli Zaretskii
2025-01-05 20:04 ` Gerd Möllmann
2025-01-05 20:24 ` Eli Zaretskii
2025-01-06 3:57 ` Gerd Möllmann
2025-01-06 8:25 ` Gerd Möllmann
2025-01-06 14:07 ` Eli Zaretskii
2025-01-05 21:15 ` Daniel Colascione
2025-01-06 12:59 ` Eli Zaretskii
2025-01-06 14:48 ` Daniel Colascione
2025-01-06 15:12 ` Eli Zaretskii
2025-01-06 15:27 ` Daniel Colascione
2025-01-05 21:01 ` Daniel Colascione
2025-01-05 23:28 ` Daniel Colascione
2025-01-06 13:26 ` Eli Zaretskii
2025-01-06 15:08 ` Daniel Colascione
2025-01-06 4:23 ` Gerd Möllmann
2025-01-04 11:41 ` Pip Cet via Bug reports for GNU Emacs, the Swiss army knife of text editors
2025-01-04 11:29 ` Pip Cet via Bug reports for GNU Emacs, the Swiss army knife of text editors
2025-01-04 12:17 ` Gerd Möllmann
2025-01-04 7:00 ` Eli Zaretskii
2025-01-04 7:17 ` Gerd Möllmann
2025-01-04 8:23 ` Eli Zaretskii
2025-01-04 8:58 ` Gerd Möllmann
2025-01-04 11:08 ` Pip Cet via Bug reports for GNU Emacs, the Swiss army knife of text editors
2025-01-04 13:47 ` Eli Zaretskii
2025-01-04 14:13 ` Gerd Möllmann
2025-01-04 15:26 ` Pip Cet via Bug reports for GNU Emacs, the Swiss army knife of text editors
2025-01-04 15:34 ` Gerd Möllmann
2025-01-04 18:19 ` Eli Zaretskii
2025-01-04 18:35 ` Gerd Möllmann
2025-01-04 19:10 ` Eli Zaretskii
2025-01-04 19:24 ` Gerd Möllmann
2025-01-04 18:02 ` Eli Zaretskii
2025-01-04 19:32 ` Pip Cet via Bug reports for GNU Emacs, the Swiss army knife of text editors
2025-01-04 20:31 ` Eli Zaretskii
2025-01-04 21:15 ` Pip Cet via Bug reports for GNU Emacs, the Swiss army knife of text editors
2025-01-05 8:23 ` Eli Zaretskii
2025-01-05 9:04 ` Pip Cet via Bug reports for GNU Emacs, the Swiss army knife of text editors
2025-01-05 9:32 ` Eli Zaretskii
2025-01-05 9:47 ` Pip Cet via Bug reports for GNU Emacs, the Swiss army knife of text editors
2025-01-05 11:04 ` Eli Zaretskii
2025-01-06 15:54 ` Pip Cet via Bug reports for GNU Emacs, the Swiss army knife of text editors
2025-01-06 19:16 ` Gerd Möllmann
2025-01-05 6:32 ` Gerd Möllmann
2025-01-05 6:59 ` Gerd Möllmann
2025-01-05 10:21 ` Eli Zaretskii
2025-01-05 10:30 ` Gerd Möllmann
2025-01-05 10:35 ` Pip Cet via Bug reports for GNU Emacs, the Swiss army knife of text editors
2025-01-05 10:45 ` Gerd Möllmann
2025-01-05 11:29 ` Eli Zaretskii
2025-01-05 11:37 ` Gerd Möllmann
2025-01-05 12:15 ` Eli Zaretskii
2025-01-05 13:21 ` Gerd Möllmann
2025-01-05 17:31 ` Eli Zaretskii
2025-01-05 17:49 ` Gerd Möllmann
2025-01-05 18:42 ` Eli Zaretskii
2025-01-05 19:02 ` Gerd Möllmann
2025-01-05 7:48 ` Eli Zaretskii
2025-01-05 8:19 ` Gerd Möllmann
2025-01-05 10:33 ` Eli Zaretskii
2025-01-05 10:40 ` Gerd Möllmann
2025-01-05 11:21 ` Pip Cet via Bug reports for GNU Emacs, the Swiss army knife of text editors
2025-01-05 11:27 ` Gerd Möllmann [this message]
2025-01-05 11:49 ` Paul Eggert
2025-01-06 6:26 ` Gerd Möllmann
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