help debugging a Emacs crash

[Le Wang <l26wang@gmail.com>]

Hi all,

I'm trying to follow up on a Emacs crash using these repro steps:
https://github.com/victorhge/iedit/pull/31#issuecomment-12451517

I believe Thierry reported the original crash using Linux.  I've
reproed it using Yamamoto's Mac build 24.2.1 and the NS build on the
Git mirror's master branch on OS X 10.8.2.

Here is the backtrace from gdb after the crash:

(gdb) bt
#0  get_pos_property (position=1518142, prop=140734799800208,
object=140734799800208) at editfns.c:402
#1  0x000000010015d489 in get_local_map (position=716,
buffer=0x10500ecda, type=140734799800288) at intervals.c:2234
#2  0x00000001000ad236 in read_key_sequence () at keyboard.c:2799
#3  0x00000001000b05a8 in command_loop_1 () at keyboard.c:1460
#4  0x0000000100115169 in internal_condition_case (bfun=0x1000af1a0
<command_loop_1>, handlers=4320211706, hfun=0x1000b0630 <cmd_error>)
at eval.c:1193
#5  0x00000001000af17e in command_loop_2 (ignore=140734799800840) at
keyboard.c:1175
#6  0x0000000100115265 in internal_catch (tag=140734799800840,
func=0x1000af140 <command_loop_2>, arg=140734799800840) at eval.c:964
#7  0x00000001000b0b90 in command_loop [inlined] () at
/Users/lewang/src/emacs/emacs/src/keyboard.c:1154
#8  0x00000001000b0b90 in recursive_edit_1 () at keyboard.c:787
#9  0x00000001000a17ad in Frecursive_edit () at keyboard.c:851
#10 0x000000010009e668 in main (argc=5312704, argv=0x7fff5fbfefc0) at
emacs.c:1555
(gdb)

I can hold the debugger for a while, but need some advice on what to do next?

-- 
Le