Re: Stak dump with tar.[bz2/gz] files (Cygwin)

[Eli Zaretskii <eliz@gnu.org>]

> Date: Sun, 15 Jun 2008 14:50:10 +0200
> From: Angelo Graziosi <angelo.graziosi@alice.it>
> CC: emacs-devel@gnu.org
> 
> Eli Zaretskii ha scritto:
> > 
> > This backtrace is in the wrong thread.  You need to switch to the
> > thread that runs the main Emacs code, I'm guessing that's the 1st or
> > the second of the threads announced after "run -Q" above.  
> 
> Hot to switch?

 (gdb) thread N

where N is the ordinal number of the thread shown by GDB in the 1st
column of the "info threads" output:

> (gdb) info threads
>    9 thread 2100.0xe10  0x7c91e4f4 in ntdll!LdrAccessResource ()
>     from /c/WINDOWS/system32/ntdll.dll
>    8 thread 2100.0xaa8  0x7c91e4f4 in ntdll!LdrAccessResource ()
>     from /c/WINDOWS/system32/ntdll.dll
>    7 thread 2100.0x454  0x7c91e4f4 in ntdll!LdrAccessResource ()
>     from /c/WINDOWS/system32/ntdll.dll
>    6 thread 2100.0xcf0  0x7c91e4f4 in ntdll!LdrAccessResource ()
>     from /c/WINDOWS/system32/ntdll.dll
>    5 thread 2100.0xe28  0x7c91e4f4 in ntdll!LdrAccessResource ()
>     from /c/WINDOWS/system32/ntdll.dll
>    4 thread 2100.0xe48  0x7c91e4f4 in ntdll!LdrAccessResource ()
>     from /c/WINDOWS/system32/ntdll.dll
>    3 thread 2100.0xb30  0x7c91e4f4 in ntdll!LdrAccessResource ()
>     from /c/WINDOWS/system32/ntdll.dll
> * 2 thread 2100.0x250  0x61016416 in open_stackdumpfile ()
>     from /usr/bin/cygwin1.dll
>    1 thread 2100.0x204  0x7c91e4f4 in ntdll!LdrAccessResource ()
>     from /c/WINDOWS/system32/ntdll.dll

I think "thread 1" is what you want.  But if it doesn't produce a
useful backtrace, try others (except 2, which you already saw is in
the Cygwin signal handler) until you see something familiar.