From: Gregory Heytings <gregory@heytings.org>
To: Daniel Mendler <mail@daniel-mendler.de>
Cc: Philip Kaludercic <philipk@posteo.net>,
michael_heerdegen@web.de, monnier@iro.umontreal.ca,
62009@debbugs.gnu.org, Eli Zaretskii <eliz@gnu.org>,
Augusto Stoffel <arstoffel@gmail.com>
Subject: bug#62009: 29.0.60; Emacs crashes on setf symbol-name
Date: Fri, 10 Mar 2023 10:59:03 +0000 [thread overview]
Message-ID: <16ecbe9ea85b22d008fd@heytings.org> (raw)
In-Reply-To: <a6b6eff0-1aa7-d0e7-3cd9-cc87ae76c421@daniel-mendler.de>
>
> Creating a string is not a good idea since it will lead to an
> unacceptably large performance overhead.
>
Is "symbol-name" a function that is used in performance-critical code?
And did you actually measure that performance overhead before concluding
that it it "unacceptably large"? According to my measurements, creating a
string from a symbol name costs about 100 CPU cycles.
>
> Raising an exception upon modification would be the best approach.
>
That would also come with a performance overhead, as there is currently no
way to distinguist strings that are used for symbol names from other
strings. Not to mention the added complexity in the code.
next prev parent reply other threads:[~2023-03-10 10:59 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-06 19:26 bug#62009: 29.0.60; Emacs crashes on setf symbol-name Daniel Mendler
2023-03-07 4:40 ` Ruijie Yu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-03-07 15:45 ` Michael Heerdegen
2023-03-07 17:08 ` Daniel Mendler
2023-03-07 17:39 ` Eli Zaretskii
2023-03-09 21:11 ` Philip Kaludercic
2023-03-10 7:11 ` Eli Zaretskii
2023-03-10 8:45 ` Augusto Stoffel
2023-03-10 8:47 ` Augusto Stoffel
2023-03-10 11:50 ` Eli Zaretskii
2023-03-10 12:00 ` Daniel Mendler
2023-03-10 12:35 ` Eli Zaretskii
2023-03-10 12:45 ` Daniel Mendler
2023-03-10 12:57 ` Eli Zaretskii
2023-03-10 13:08 ` Daniel Mendler
2023-03-10 15:02 ` Eli Zaretskii
2023-03-11 15:16 ` Gregory Heytings
2023-03-11 15:37 ` Eli Zaretskii
2023-03-18 22:46 ` Gregory Heytings
2023-03-19 6:03 ` Eli Zaretskii
2023-03-19 21:20 ` Gregory Heytings
2023-03-10 11:49 ` Eli Zaretskii
2023-03-10 9:40 ` Gregory Heytings
2023-03-10 10:31 ` Daniel Mendler
2023-03-10 10:59 ` Gregory Heytings [this message]
2023-03-10 11:09 ` Daniel Mendler
2023-03-10 11:23 ` Augusto Stoffel
2023-03-10 12:09 ` Eli Zaretskii
2023-03-10 11:30 ` Robert Pluim
2023-03-10 11:36 ` Daniel Mendler
2023-03-10 12:13 ` Eli Zaretskii
2023-03-10 12:24 ` Daniel Mendler
2023-03-10 22:01 ` Dmitry Gutov
2023-03-10 11:57 ` Gregory Heytings
2023-03-10 12:12 ` Eli Zaretskii
2023-03-10 13:19 ` Robert Pluim
2023-03-11 7:07 ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-03-13 8:07 ` Robert Pluim
2023-03-13 8:28 ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-03-13 11:47 ` Eli Zaretskii
2023-03-13 11:50 ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-03-13 11:46 ` Eli Zaretskii
2023-03-10 11:59 ` Eli Zaretskii
2023-03-10 11:53 ` Eli Zaretskii
2023-03-10 11:59 ` Gregory Heytings
2023-03-11 7:07 ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-03-11 7:47 ` Eli Zaretskii
2023-03-10 18:56 ` Philip Kaludercic
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