GNU bug report logs - #569
23.0.60; OSX: make-network-process reuses existing file descriptors

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Message #5 received at submit <at> emacsbugs.donarmstrong.com (full text, mbox):

From: Markus Triska <markus.triska <at> gmx.at>
To: emacs-pretest-bug <at> gnu.org
Subject: Re: 23.0.60; OSX: make-network-process reuses existing file descriptors
Date: Thu, 17 Jul 2008 16:22:25 +0200

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

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:

diff --git a/src/process.c b/src/process.c
index b0bebeb..b5aebdc 100644
--- a/src/process.c
+++ b/src/process.c
@@ -3366,7 +3374,7 @@ usage: (make-network-process &rest ARGS)  */)
       hints.ai_protocol = 0;
 
 #ifdef HAVE_RES_INIT
-      res_init ();
+      /* res_init (); */
 #endif
 
       ret = getaddrinfo (SDATA (host), portstring, &hints, &res);

Message #12 received at 569 <at> emacsbugs.donarmstrong.com (full text, mbox):

From: YAMAMOTO Mitsuharu <mituharu <at> math.s.chiba-u.ac.jp>
To: Markus Triska <markus.triska <at> gmx.at>, 569 <at> debbugs.gnu.org
Subject: Re: bug#569: 23.0.60;	OSX: make-network-process reuses existing file descriptors
Date: Fri, 18 Jul 2008 12:49:59 +0900

>>>>> On Thu, 17 Jul 2008 16:22:25 +0200, Markus Triska <markus.triska <at> gmx.at> said:

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

> 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.

				     YAMAMOTO Mitsuharu
				mituharu <at> math.s.chiba-u.ac.jp

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