Re: emacs-22.1 with GTK dumps core when Gnome wigets clicked

[Gary Mills]

On Sat, Jun 16, 2007 at 09:30:59AM -0500, Gary Mills wrote:
> On Sat, Jun 16, 2007 at 02:22:54PM +0900, YAMAMOTO Mitsuharu wrote:
> > 
> > Could you try yet another patch below and identify the line in the
> > source code where the crash occurs?
> 
> It does still dump core for me.  I'm not sure that I can identify the
> source line.  I have very little experience with debuggers.  I'd have
> to use dbx in this case.  I'll see what I can do.

This might be what you want:

$ dbx src/emacs core
...
t@2 (l@2) terminated by signal KILL (Killed)
0xfd3416b8: __pollsys+0x0008:   blu      _cerror        ! 0xfd2a2600
(dbx) where
current thread: t@2
=>[1] __pollsys(0x4, 0x8, 0x0, 0x0, 0x622b08, 0x0), at 0xfd3416b8
  [2] _pollsys(0x964080, 0x8, 0x0, 0x0, 0x0, 0x1), at 0xfd334824
  [3] _poll(0x964080, 0x8, 0xffffffff, 0xfd7f2400, 0xb16310, 0x0), at 0xfd2dd170
  [4] g_main_context_poll(0xb16300, 0xffffffff, 0x8, 0x964080, 0x8, 
0xfd2dd0f4), at 0xfecd8098
  [5] g_main_context_iterate(0x964080, 0x1, 0x1, 0xb16300, 0xb16308, 0x8), at 
0xfecd74a0
  [6] g_main_loop_run(0x6798b0, 0xfed3ec00, 0xff000000, 0x617460, 0x0, 
0xfed2a800), at 0xfecd7c44
  [7] link_io_thread_fn(0x0, 0xfabb0188, 0xfd338f9c, 0x800, 0xfabad258, 0x910), 
at 0xfab90e18
  [8] g_thread_create_proxy(0x617460, 0x1, 0xfed3ec00, 0x0, 0xfd339f78, 
0xfab90df0), at 0xfecf2268
(dbx) lwps
  l@1 LWP suspended in g_main_context_acquire()
 >l@2 LWP suspended in __pollsys()
o l@3 signal SIGSEGV in _malloc_internal_nolock()
(dbx) lwp l@3
t@3 (l@3) stopped in _malloc_internal_nolock (optimized) at line 796 in file 
"gmalloc.c"
  796               next->next->prev = next->prev;
(dbx) where
=>[1] _malloc_internal_nolock(size = ???) (optimized), at 0x22151c (line ~796) 
in "gmalloc.c"
  [2] _malloc_internal(size = ???) (optimized), at 0x221b90 (line ~954) in 
"gmalloc.c"
  [3] malloc(size = ???) (optimized), at 0x221bf8 (line ~967) in "gmalloc.c"
  [4] emacs_blocked_malloc(size = ???, ptr = ???) (optimized), at 0x1aeb48 
(line ~1244) in "alloc.c"
  [5] malloc(size = ???) (optimized), at 0x221bf8 (line ~967) in "gmalloc.c"
  [6] calloc(nmemb = ???, size = ???) (optimized), at 0x222770 (line ~1624) in 
"gmalloc.c"
  [7] _xdg_glob_hash_insert_text(0x0, 0xfa14f88e, 0xc10e10, 0x67, 0x6f, 
0x19bb4), at 0xfac548a0
...
(dbx) print next->prev
dbx: Can't evaluate local variables in optimized functions

-- 
-Gary Mills-    -Unix Support-    -U of M Academic Computing and Networking-