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bug#562: marked as done (23.0.60; OSX: make-network-process reuses exis


From: Emacs bug Tracking System
Subject: bug#562: marked as done (23.0.60; OSX: make-network-process reuses existing file descriptors)
Date: Wed, 13 Aug 2008 18:00:03 -0700

Your message dated Wed, 13 Aug 2008 20:54:20 -0400
with message-id <address@hidden>
and subject line Re: 23.0.60; OSX: make-network-process reuses existing file 
descriptors
has caused the Emacs bug report #562,
regarding 23.0.60; OSX: make-network-process reuses existing file descriptors
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
bug report if necessary, and/or fix the problem forthwith.

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-- 
562: http://emacsbugs.donarmstrong.com/cgi-bin/bugreport.cgi?bug=562
Emacs Bug Tracking System
Contact address@hidden with problems
--- Begin Message --- Subject: 23.0.60; OSX: make-network-process reuses existing file descriptors Date: Tue, 15 Jul 2008 13:33:48 +0200
When I evaluate the following form in "emacs -Q":

   (progn
     (setq p1 (make-network-process :name "p1" :host "www.fsf.org" :service 80))
     (setq p2 (make-network-process :name "p2" :host "www.fsf.org" :service 80))
     (setq p3 (make-network-process :name "p3" :host "www.fsf.org" :service 80))
     (delete-process p2)
     (process-send-string p3 "there"))

I get:

  Debugger entered--Lisp error: (file-error "writing to process" "bad file 
descriptor" #<process p3<1>>)
  process-send-string(#<process p3<1>> "hi")

This is because p2 and p3 are both created with infd=outfd=0, thus
closing the channel for p2 also closes that of p3.


In GNU Emacs 23.0.60.1 (i386-apple-darwin8.11.1, GTK+ Version 2.12.9)
 of 2008-07-13 on mt-computer.local
Windowing system distributor `The XFree86 Project, Inc', version 11.0.40400000
configured using `configure  'CFLAGS=-O0 -g''

Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: nil
  value of $XMODIFIERS: nil
  locale-coding-system: nil
  default-enable-multibyte-characters: t



--- End Message ---
--- Begin Message --- Subject: Re: 23.0.60; OSX: make-network-process reuses existing file descriptors Date: Wed, 13 Aug 2008 20:54:20 -0400
> > Commenting out a res_init call in process.c makes this go away for
> > me. I do not know what other consequences this has though:
>
> You can comment it out on Mac OS X, because calling `res_init' does
> not make sense at all on that platform.  Neither does linking
> libresolv.
>
>   http://lists.gnu.org/archive/html/emacs-devel/2007-11/msg01467.html
>   http://lists.gnu.org/archive/html/emacs-devel/2007-10/msg01254.html
>
> So, it turns out to be not only meaningless, but also harmful on a
> particular version (10.4) of Mac OS X.

I've undef'ed HAVE_LIBRESOLV and HAVE_RES_INIT in s/darwin.h, as you
suggested.  Thanks.


--- End Message ---

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