From: Gilles <gilles.usenet@gmail.com>
To: zsh-workers@zsh.org
Subject: [BUG] crash when I unset and redefine a function within itself
Date: Wed, 16 Oct 2024 19:55:57 +0200 [thread overview]
Message-ID: <CAHf9+CvfRwuwAEFLgOqEpjM6bAZtg4r2BgRgr1rZNf-akmJgyg@mail.gmail.com> (raw)
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With zsh 5.9 from Ubuntu 24.04 x86_64, or with the latest version from git
(383526da422cf1c962d9be7e9e6ac166e226bf2b) compiled locally, the shell
segfaults when I run a function that undefines then redefines itself.
zsh -c 'foo () { unset -f foo; foo () { echo redefined; }; }; foo'
[1] 89793 segmentation fault (core dumped) zsh -c 'foo () { unset -f
foo; foo () { echo redefined; }; }; foo'
This works with zsh 5.8.1 on Ubuntu 22.04 and older versions.
Workaround: if you redefine a function within itself, make sure not to
unset it first.
This is simplified from real code in my .zshrc that decides on first use
whether the command name foo should invoke the external command directly or
be a function that wraps around it.
--
Gilles
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next reply other threads:[~2024-10-16 17:56 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-16 17:55 Gilles [this message]
2024-10-16 19:54 ` Bart Schaefer
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