bug#14569: 24.3.50; bootstrap fails on Cygwin

[Ken Brown]

On 6/19/2013 10:45 PM, Eli Zaretskii wrote:
> > Date: Wed, 19 Jun 2013 16:24:02 -0400
> > From: Ken Brown <kbrown@cornell.edu>
> > CC: jan.h.d@swipnet.se, 14569@debbugs.gnu.org,
> >          Paul Eggert <eggert@cs.ucla.edu>
> >
> > After that there were many compile failures with errors like those that
> > others have reported:
> >
> > Compiling gnus/gnus-cache.el
> > GLib (gthread-posix.c): Unexpected error from C library during
> > 'pthread_setspecific': Invalid argument.  Aborting.
> > Makefile:254: recipe for target `gnus/gnus-cache.elc' failed
> >
> > But these compilations didn't invoke gdb, apparently because they
> > involved Makefile targets other than compile-onefile.
>
> No, I think these failures didn't go through 'abort', that's why you
> didn't get the backtrace.  You need to look at the pthread sources in
> the file mentioned, and find out where to put the breakpoint to catch
> that error.

The error message comes from 'g_thread_abort', which calls 'abort'.  The 
reason there was no backtrace is exactly what I said.  I know that's the 
case because I removed the "@" at the beginning of the Makefile rule so 
that the command would get echoed, but it didn't get echoed in the 
compilation above (and others like it).  On the other hand, it did get 
echoed in the SIGSEGV examples that I mentioned in my previous mail.

Ken