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bug#17753: Cygwin emacs-X11 core dump


From: Markus Hoenicka
Subject: bug#17753: Cygwin emacs-X11 core dump
Date: Wed, 11 Jun 2014 08:16:39 +0200
User-agent: Roundcube Webmail

Am 2014-06-11 04:51, schrieb Eli Zaretskii:
Date: Mon, 9 Jun 2014 23:55:32 +0200
From: address@hidden

As I started to collect crash data only about two weeks ago, it
is too early to search for patterns or for ways to reproduce the
crashes. This is also why I can't offer backtraces after starting
Emacs with the -Q switch. I hope that someone can make sense of the
backtrace data anyway.

Thanks.  Your backtrace looks strange: was that binary stripped or
something?  Why does the backtrace end at CHAR_TABLE_REF, which is a
very internal function?  Why the "??" in the backtrace?

Are you sure you were in the right thread when you collected the
backtrace?


No, I'm not sure at all. How do I find out? When I start gdb, I see the following:

$ gdb /usr/bin/emacs-X11.exe emacs-X11.exe.core
GNU gdb (GDB) 7.6.50.20130728-cvs (cygwin-special)
[... copyright blurb ...]
Reading symbols from /usr/bin/emacs-X11.exe...Reading symbols from /usr/lib/debug/usr/bin/emacs-X11.exe.dbg...done.
done.

warning: core file may not match specified executable file.
[New Thread 0x6d8]
[New Thread 0x64c]
[New Thread 0xda0]
[New Thread 0xf34]
[New Thread 0x8dc]
[New Thread 0xc20]
[New Thread 0x8fc]
[New Thread 0xb48]
[New Thread 0xe14]
#0  0x0000003300001fa4 in ?? ()

This is where I type "bt" or "bt full".

I'll be happy to provide further information and run tests if needed.

A this point, we need as many informative backtraces as you can
provide.

(Btw, the other Cygwin-64 related crashes were in the w32 build, not a
GTK build of the Cygwin Emacs.)

Yes, I'm aware of that. This is why I felt compelled to report crash data from emacs-X11.exe as well.

regards,
Markus

--
Markus Hoenicka
http://www.mhoenicka.de
AQ score 38






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