From: Bart Schaefer <schaefer@brasslantern.com>
To: zsh-workers@zsh.org
Subject: Re: Script interpreter path length limit (POUNDBANGLIMIT)
Date: Wed, 10 Aug 2016 19:20:08 -0700 [thread overview]
Message-ID: <160810192008.ZM8784@torch.brasslantern.com> (raw)
In-Reply-To: <57AB7548.6020201@gmail.com>
On Aug 10, 8:41pm, Dennis Sperlich wrote:
}
} It seems like there is a arbitrary 63 character limit on the interpreter
} char buffer. At least this is what i understand from the code in
} Src/exec.c starting line 431.
The specific choice of 64 for the buffer size (63+nul) is historical and
loosely based on OS limitations of the 1990s.
A LOT of info about this here:
http://www.in-ulm.de/~mascheck/various/shebang/#results
Rather lacking in very-recent OS's, but you get the idea how inconsistent
this is. I can't find anything about a standard way to look up the limit
on the build architecture, probably because POSIX defines #! as optional.
The limit in zsh could be expanded to allow the OS to flag the error.
prev parent reply other threads:[~2016-08-11 2:20 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-10 18:41 Dennis Sperlich
2016-08-11 2:20 ` Bart Schaefer [this message]
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