[debbugs-tracker] bug#20555: closed (Emacs 24.2 vs 24.4 on Solaris: M-x shell and "tty => not a tty")

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Your message dated Thu, 11 Jun 2015 16:48:10 -0700
with message-id <address@hidden>
and subject line Re: Emacs 24.2 vs 24.4 on Solaris: M-x shell and "tty => not a 
tty"
has caused the debbugs.gnu.org bug report #20555,
regarding Emacs 24.2 vs 24.4 on Solaris: M-x shell and "tty => not a tty"
to be marked as done.

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20555: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=20555
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> --- Begin Message ---
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> Subject: 
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> Re: Emacs 24.2 vs 24.4 on Solaris: M-x shell and "tty => not a tty"
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> Date: 
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> Mon, 11 May 2015 23:08:34 -0700
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> User-agent: 
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> Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.6.0
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> [moving this to bug-gnu-emacs, so that it gets a proper bug number]
>
> Georges Ko wrote:
> > What were the changes done on Emacs 24.4 regarding subshells (or
> > processes), compared to version 24.2?
>
> Quite a few, I suspect.  You can use 'diff' to find out the details....
>
> > When compiled in the same environment, "tty" in a subshell
> > (M-x shell) has different outputs:
> >
> >    - in Emacs 24.2, "tty" outputs the tty,
> >    - in Emacs 24.4, "tty" outputs "not a tty".
> >
> > That is, if I run the command below to spawn a shell:
> >
> >    (apply 'start-process "shell" "*shell*" "/bin/ksh" '("-i"))
> >
> >    - in Emacs 24.2, "ps" shows the shell has a normal tty,
> >    - in Emacs 24.4, "ps" shows the shell has a tty with "?".
>
> I don't observe either problem when running Emacs 24.5 under Solaris 11 x86-64 
> compiled with the bundled GCC (4.5.2).  However, I do observe them when running 
> Emacs 24.5 under Solaris 10 sparc compiled with Sun C 5.13.
>
> > I couldn't compile 24.3 due to some errors, so I don't know its behavior.
>
> Emacs 24.3 is bundled within Solaris 11.2, for what it's worth.
>
> If you're still running into problems, I suggest replying with details of how 
> you built Emacs (version of OS and compiler, 'configure' arguments, log from 
> 'configure' and 'make', etc.).
>
> PS.  This looks a bit like Bug#9150 <http://bugs.gnu.org/9150>, but that bug was 
> in an older Emacs, which probably means it's independent.
>
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> --- End Message ---

--- Begin Message --- Subject: Re: Emacs 24.2 vs 24.4 on Solaris: M-x shell and "tty => not a tty" Date: Thu, 11 Jun 2015 16:48:10 -0700 User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.7.0 Akira Shirai, thanks for the info about grantpt and its internal setuid program; that made the problem obvious. I installed the attached patch into the Emacs master sources and am (perhaps optimistically) marking this bug as done.

0001-Fix-not-a-tty-bug-on-Solaris-10.patch
Description: Text Data

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