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Re: Failures in build Emacs-CVS on Cygwin

From: Angelo Graziosi
Subject: Re: Failures in build Emacs-CVS on Cygwin
Date: Thu, 23 Nov 2006 01:07:40 +0100 (MET)

On Thu, 23 Nov 2006, Eli Zaretskii wrote:

> > Date: Wed, 22 Nov 2006 15:49:08 +0100 (MET)
> > From: Angelo Graziosi <address@hidden>
> > cc: Eli Zaretskii <address@hidden>
> > 
> > Wrote 
> > /home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs/lisp/emacs-lisp/bytecomp.elc
> > Compiling /home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs/lisp/subr.el
> > Fatal error (6)/bin/sh: line 4:  2196 Aborted                 (core dumped) 
> > EMACSLOADPATH=/home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs/lisp
> Does Cygwin GDB support core file (a.k.a. post-mortem) debugging?  

I think NO: there is not a 'core' file. The failure creates a file in lisp
called 'bootstrap-emacs.exe.stackdump' which contains:

$ cat bootstrap-emacs.exe.stackdump 
Stack trace:
Frame     Function  Args
0022A868  7C802532  (000006D0, 0000EA60, 000000A4, 0022A8B0)
0022A988  6109745C  (00000000, 00000000, 00000000, 00000000)
0022AA78  61094FDB  (00000000, 003B0023, 00230000, 00000000)
0022AAD8  610954BB  (0022AAF0, 00000000, 00000094, 202EDC00)
0022AB98  61095672  (00000DB8, 00000006, 202DD801, 61017A53)
0022ABC8  61092AA8  (00000006, 60030000, 0022ACF8, 6109751C)
0022ACB8  61017B70  (000006D0, 0000EA60, 000000A4, 0022AD00)
0022ADD8  6109751C  (00000000, 0022AED8, 20C3B800, 6101BE4E)
0022AEC8  61094FDB  (00000000, 61167A20, 00000400, 61167A20)
0022AF28  610954BB  (0022AF40, 00000000, 00000094, 0022AF88)
0022AFE8  61095672  (00000DB8, 00000006, 0022B018, 20151730)
0022AFF8  61092AA8  (00000000, 20CB0000, 0022B018, 20CD3000)
0022B018  20151730  (20CC0950, 211D0970, 00001AC0, 202DE004)
0022B058  201521A8  (FFFDD000, 203C0003, 0022B108, 20122139)
0022B0B8  20150951  (00004000, 202DD801, 0022B0F8, 200F28E5)
0022B0C8  200F2E3C  (00004000, 203C001D, 0022D008, 0022B214)
End of stack trace (more stack frames may be present)

Trying your suggestion in any case, this is the result:

$ gdb bootstrap-emacs.exe ../lisp/bootstrap-emacs.exe.stackdump 
GNU gdb (cygwin-special)
Copyright (C) 2006 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you
welcome to change it and/or distribute copies of it under certain
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for
This GDB was configured as "i686-pc-cygwin"...
not a core dump: File format not recognized
DISPLAY = :0.0
TERM = xterm
Breakpoint 1 at 0x200a0b66: file
/home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs/src/emacs.c, line 464.
Breakpoint 2 at 0x200ba689: file
/home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs/src/sysdep.c, line
(gdb) bt
No stack.

Lisp Backtrace:
Cannot access memory at address 0x22c2f8 

As you can see GDB says 'bootstrap-emacs.exe.stackdump is not a core


>If so, could you please type "gdb bootstrap-emacs.exe core" (assuming the
> core file's name is `core'), and see where it crashes with the "bt"
> command?  Please run GDB from the src directory, to have it pick up
> all the definitions in the .gdbinit file.

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