GNU bug report logs - #9754
emacs -nv fails on glib 2.31

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Ken Brown <kbrown <at> cornell.edu>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#10631: closed (Infinite loop in emacs 23 on terminal (-nw
 option) on xgselect.c:58-59 when compiled with gtk+ or gconf support)
Date: Sat, 19 May 2012 21:58:02 +0000

[Message part 1 (text/plain, inline)]

Your message dated Sat, 19 May 2012 17:56:33 -0400
with message-id <4FB81711.8060005 <at> cornell.edu>
and subject line Re: bug#9754: Issue with Emacs 23.4
has caused the debbugs.gnu.org bug report #9754,
regarding Infinite loop in emacs 23 on terminal (-nw option) on xgselect.c:58-59 when compiled with gtk+ or gconf support
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


-- 
9754: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=9754
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Contact help-debbugs <at> gnu.org with problems

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From: Maciej Marcin Piechotka <uzytkownik2 <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: Infinite loop in emacs 23 on terminal (-nw option) on
	xgselect.c:58-59 when compiled with gtk+ or gconf support
Date: Sat, 28 Jan 2012 16:24:48 +0000

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I hit an infinite loop on gselect.c:58-59. After quick debugging I found
that the problem is in loop xgselect.c:58-59:

while(n_gfds > gfds_size)
  gfds_size *= 2;

Problem is that:

(gdb) p n_gfds
$3 = 1
(gdb) p gfds_size
$4 = 0

1. It seems that xgselect_initialize was not called as X system is
initialized.

2. Is there a reason why the code is not using (much more efficient but
equivalent) such code in the first place:

if (ngfds > gfds_size)
  {
    gfds_size = 1 << g_bit_storage (ngfds);
    xfree (gfds);
    gfds = xmalloc (sizeof (*gfds) * gfds_size);
  }

3. The attached file get rids of initialization at all initializing at
the cost of conditional freeing of gfds (and starting mallocing from 1
instead of 128).

Best regards

[0001-Fix-infinit-loop-when-emacs-is-compiled-with-GTK-sup.patch (text/x-patch, attachment)]

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From: Ken Brown <kbrown <at> cornell.edu>
To: Paul Eggert <eggert <at> cs.ucla.edu>
Cc: Achim Gratz <Stromeko <at> nexgo.de>, 9754-done <at> debbugs.gnu.org
Subject: Re: bug#9754: Issue with Emacs 23.4
Date: Sat, 19 May 2012 17:56:33 -0400

Version: 24.2

I've committed the change as bzr revision 108316, and I'm closing the bug.

Ken

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