From: "Mattias Engdegård" <mattias.engdegard@gmail.com>
To: Stefan Monnier <monnier@iro.umontreal.ca>
Cc: "Gerd Möllmann" <gerd.moellmann@gmail.com>,
"Eli Zaretskii" <eliz@gnu.org>,
jm@pub.pink, 68690@debbugs.gnu.org
Subject: bug#68690: Segmentation fault building with native-comp
Date: Fri, 26 Jan 2024 17:07:15 +0100 [thread overview]
Message-ID: <290E2D8C-E0FA-479C-A79C-6651587B965D@gmail.com> (raw)
In-Reply-To: <jwvsf2lm473.fsf-monnier+emacs@gnu.org>
25 jan. 2024 kl. 23.39 skrev Stefan Monnier <monnier@iro.umontreal.ca>:
> AFAIK the current DOHASH code in `master` works fine (tho a bit ugly).
I think it's less good (and more complex) than not trying to cache anything at all where the compiler actually will help out a bit, and it's slower than the fast caching version.
> The build failure didn't come via maphash` but via the DOHASH in
> `comp.c` that calls `compile_function` (which apparently can cause the
> hash table to be resized).
Do you know which one? It's quite possible that that code wasn't written taking into account the problems of extending the table being iterated over. We should definitely ask Andrea.
Meanwhile, I suggest adding a DOHASH_SAFE (simple, safe) to be used in these cases, including Fmaphash, and use the (someone less simple, fast) DOHASH in my previous patch with an extra assertion to catch mistakes elsewhere in checking builds.
prev parent reply other threads:[~2024-01-26 16:07 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-01-24 14:36 bug#68690: Segmentation fault building with native-comp john muhl via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-01-24 17:10 ` Eli Zaretskii
2024-01-24 19:52 ` Gerd Möllmann
2024-01-24 19:56 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-01-24 20:27 ` Eli Zaretskii
2024-01-24 23:59 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-01-25 10:26 ` Eli Zaretskii
2024-01-26 2:43 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-01-26 8:40 ` Eli Zaretskii
2024-01-26 9:26 ` Gerd Möllmann
2024-01-26 13:48 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-01-26 14:36 ` Eli Zaretskii
2024-01-26 15:51 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-01-26 14:30 ` Eli Zaretskii
2024-01-26 14:47 ` Gerd Möllmann
2024-01-26 14:55 ` Eli Zaretskii
2024-01-27 0:08 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-01-27 4:07 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-01-27 7:50 ` Eli Zaretskii
2024-01-27 14:45 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-01-26 10:18 ` Andreas Schwab
2024-01-26 13:49 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-01-26 14:50 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-01-25 5:33 ` Gerd Möllmann
2024-01-25 8:33 ` Gerd Möllmann
2024-01-25 15:58 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-01-25 18:12 ` Mattias Engdegård
2024-01-25 22:39 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-01-26 16:07 ` Mattias Engdegård [this message]
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