GNU bug report logs - #14569
24.3.50; bootstrap fails on Cygwin

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Message #80 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Paul Eggert <eggert <at> cs.ucla.edu>
To: Jan Djärv <jan.h.d <at> swipnet.se>
Cc: bug-emacs <bug-gnu-emacs <at> gnu.org>, Eli Zaretskii <eliz <at> gnu.org>,
 Ken Brown <kbrown <at> cornell.edu>, Angelo Graziosi <angelo.graziosi <at> alice.it>
Subject: Re: bug#14569: 24.3.50; bootstrap fails on Cygwin
Date: Thu, 13 Jun 2013 10:39:22 -0700

On 06/13/13 00:08, Jan Djärv wrote:
> I do get segmentation violations sometimes instead of the pthread abort.  
> But I haven't been able to get one while running the debugger yet 

Which version of glib are you using?  Older versions
require special handholding with initialization,
e.g., g_type_init, and perhaps we're running into
that problem -- or perhaps you're using a newer
version and its autoinitialization code isn't working.

Also, a bit of Googling found this bug:

http://cygwin.com/ml/cygwin/2012-05/msg00472.html

where signals may nor may not reach the correct thread
with pthread_kill.  Emacs uses pthread_kill to redirect
SIGCHLD to the main thread; if this is sent to a random
thread instead, that could explain the random crashes
you're observing (maybe a recursive runaway in a
signal handler?).

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