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Date:      Wed, 11 Jan 2023 04:15:09 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 268866] tcsh: Segmentation fault
Message-ID:  <bug-268866-227-jC7ARGCltv@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-268866-227@https.bugs.freebsd.org/bugzilla/>
References:  <bug-268866-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D268866

Tatsuki Makino <tatsuki_makino@hotmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |tatsuki_makino@hotmail.com

--- Comment #8 from Tatsuki Makino <tatsuki_makino@hotmail.com> ---
12.4-STABLE amd64 is reproducible.

!# is history substitution. # is the current event.
:q is quote substituted words.

That is,
echo !#:q
will run
echo echo
.
echo !#:q foo
will run
echo echo foo
.

Core dumps are useless without debug builds :)
(lldb) bt
* thread #1, name =3D 'tcsh', stop reason =3D signal SIGSEGV
  * frame #0: 0x000000000022cf32 tcsh`___lldb_unnamed_symbol507 + 66
    frame #1: 0x000000000022c7a2 tcsh`___lldb_unnamed_symbol503 + 290

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