From: Stephane Chazelas <stephane.chazelas@gmail.com>
To: Zsh hackers list <zsh-workers@zsh.org>
Subject: Re: [doc] $ERRNO broken
Date: Fri, 14 Oct 2016 17:04:59 +0100 [thread overview]
Message-ID: <20161014160459.GA17477@chaz.gmail.com> (raw)
In-Reply-To: <20161014155603.GA17198@chaz.gmail.com>
2016-10-14 16:56:03 +0100, Stephane Chazelas:
> Probably unrelated to the $errnos issue raised recently. It
> looks like $ERRNO no longer works, at least on Debian Linux
> unstable amd64 with today's git code built with gcc 6.1 or gcc
> 4.4 or the zsh-5.2-5 Debian package.
>
> Same on ubuntu 16.04 (5.1.1). It was fine in Ubuntu 14.04
> (5.0.2).
>
> $ zsh -c '/; echo $ERRNO'
> zsh:1: permission denied: /
>
> $ zsh -c 'typeset -p ERRNO
> $
[...]
Actually, it's fine when you *set* it beforehand, and you would
generally want to set it beforehand as in:
zsh -c 'ERRNO=0; /; echo $ERRNO'
or otherwise you wouldn't know what system call the $ERRNO you'd
get is from.
So it's just a documentation issue: the doc should say that
ERRNO should be set (declaring it is not enough) before use.
--
Stephane
next prev parent reply other threads:[~2016-10-14 16:10 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-14 15:56 Stephane Chazelas
2016-10-14 16:04 ` Stephane Chazelas [this message]
2016-10-14 17:00 ` [doc] " Peter Stephenson
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