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bug#8276: another crash in mark_object


From: David Reitter
Subject: bug#8276: another crash in mark_object
Date: Thu, 17 Mar 2011 15:20:34 -0400

X-Debbugs-CC: address@hidden

Maybe related to #8270

E, I cannot tell from your report whether you're using the 23 or the 24 Emacs 
branch version.  We offer several development builds.
Please follow up with the output of "Send Bug Report" from within Emacs or 
Aquamacs.


Begin forwarded message:

> From: emacs user <address@hidden>
> Date: March 17, 2011 3:00:24 PM EDT
> To: address@hidden
> Subject: [Aquamacs-bugs] a related aquamacs crash
> Reply-To: Bug reports for Aquamacs Emacs <address@hidden>
> 
> I downloaded the most recent development version of aquamacs and the
> good news is that I cannot reproduce the bug I just reported with this
> version. I hope the fix can make its way to gnu emacs at some point.
> In any case, there is a similar/ possibly related bug which I find on
> the gnu emacs trunk version so I tried it here and it does occur:  I
> compiled the most recent development version of aquamacs with
> CFLAGS=-g.  when I start vm to read my mail it crashes with the
> following gdb output.  again, please let me know if there is anything
> else I can do, thanks, E
> 
> $ gdb 
> /usr/local/aquamacs/davidswelt-aquamacs-emacs-3c35cfa/nextstep/Aquamacs.app/Contents/MacOS/Aquamacs
> GNU gdb 6.3.50-20050815 (Apple version gdb-1472) (Wed Jul 21 10:53:12 UTC 
> 2010)
> Copyright 2004 Free Software Foundation, Inc.
> GDB is free software, covered by the GNU General Public License, and you are
> welcome to change it and/or distribute copies of it under certain conditions.
> Type "show copying" to see the conditions.
> There is absolutely no warranty for GDB.  Type "show warranty" for details.
> This GDB was configured as "x86_64-apple-darwin"...Reading symbols for
> shared libraries ............... done
> 
> DISPLAY = /tmp/launch-CiFba6/org.x:0
> TERM = xterm-color
> Breakpoint 1 at 0x624dd2f19c9c7f
> Breakpoint 2 at 0x10013710e: file sysdep.c, line 840.
> (gdb) run
> Starting program:
> /usr/local/aquamacs/davidswelt-aquamacs-emacs-3c35cfa/nextstep/Aquamacs.app/Contents/MacOS/Aquamacs
> Reading symbols for shared libraries
> .++++++++++++++.....................................................................................................................
> done
> Reading symbols for shared libraries . done
> Reading symbols for shared libraries . done
> Reading symbols for shared libraries . done
> Reading symbols for shared libraries . done
> Reading symbols for shared libraries . done
> Reading symbols for shared libraries . done
> Reading symbols for shared libraries . done
> Reading symbols for shared libraries . done
> 
> Program received signal EXC_BAD_ACCESS, Could not access memory.
> Reason: KERN_PROTECTION_FAILURE at address: 0x00007fff5f3aefd8
> 0x00000001001a416d in mark_object (arg=Cannot access memory at address
> 0x7fff5f3aefd8
> ) at alloc.c:5263
> 5263  {
> (gdb) xbt
> Undefined command: "xbt".  Try "help".
> (gdb) backtrace full
> #0  0x00000001001a416d in mark_object (arg=Cannot access memory at
> address 0x7fff5f3aefd8
> ) at alloc.c:5263
>       obj = Cannot access memory at address 0x7fff5f3aef98
> 
> Lisp Backtrace:
> "vm-tokenized-summary-insert"warning: Unable to restore previously
> selected frame.
> Unsafe to call functions on thread 1: function: malloc_gdb_po_unsafe on stack
> warning: check_safe_call: could not restore current frame
> 
> warning: Canceling operation - malloc lock could be held on current thread.
> (0x5fbfb148)
> "vm-do-summary"Unsafe to call functions on thread 1: function:
> malloc_gdb_po_unsafe on stack
> warning: check_safe_call: could not restore current frame
> 
> warning: Canceling operation - malloc lock could be held on current thread.
> (0x5fbfb678)
> "vm-do-needed-summary-rebuild"Unsafe to call functions on thread 1:
> function: malloc_gdb_po_unsafe on stack
> warning: check_safe_call: could not restore current frame
> 
> warning: Canceling operation - malloc lock could be held on current thread.
> (0x5fbfbb88)
> Unsafe to call functions on thread 1: function: malloc_gdb_po_unsafe on stack
> warning: check_safe_call: could not restore current frame
> 
> warning: Canceling operation - malloc lock could be held on current thread.
> 0x2d4a770 PVEC_COMPILED
> "mapatoms"Unsafe to call functions on thread 1: function:
> malloc_gdb_po_unsafe on stack
> warning: check_safe_call: could not restore current frame
> 
> warning: Canceling operation - malloc lock could be held on current thread.
> (0x5fbfc238)
> "vm-update-summary-and-mode-line"Unsafe to call functions on thread 1:
> function: malloc_gdb_po_unsafe on stack
> warning: check_safe_call: could not restore current frame
> 
> warning: Canceling operation - malloc lock could be held on current thread.
> (0x5fbfc748)
> "vm-summarize"Unsafe to call functions on thread 1: function:
> malloc_gdb_po_unsafe on stack
> warning: check_safe_call: could not restore current frame
> 
> warning: Canceling operation - malloc lock could be held on current thread.
> (0x5fbfcc78)
> "byte-code"Unsafe to call functions on thread 1: function:
> malloc_gdb_po_unsafe on stack
> warning: check_safe_call: could not restore current frame
> 
> warning: Canceling operation - malloc lock could be held on current thread.
> (0x5fbfd0d0)
> "vm"Unsafe to call functions on thread 1: function:
> malloc_gdb_po_unsafe on stack
> warning: check_safe_call: could not restore current frame
> 
> warning: Canceling operation - malloc lock could be held on current thread.
> (0x5fbfd780)
> "vm-my-open-folder-RMAIL"Unsafe to call functions on thread 1:
> function: malloc_gdb_po_unsafe on stack
> warning: check_safe_call: could not restore current frame
> 
> warning: Canceling operation - malloc lock could be held on current thread.
> (0x5fbfdb80)
> "call-interactively"Unsafe to call functions on thread 1: function:
> malloc_gdb_po_unsafe on stack
> warning: check_safe_call: could not restore current frame
> 
> warning: Canceling operation - malloc lock could be held on current thread.
> (0x5fbfdfb8)
> (gdb)
> 






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