Crash with GTK tool bar

[Nick Roberts]

If I enable tool-bar-mode, then do M-x vm, I get a crash with the backtrace
below.  I don't have the tool bar icons for vm but I guess Emacs still
shouldn't crash.

-- 
Nick                                           http://www.inet.net.nz/~nickrob



Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1220249136 (LWP 25859)]
0xb7940119 in g_type_check_instance_is_a () from /usr/lib/libgobject-2.0.so.0
(gdb) bt
#0  0xb7940119 in g_type_check_instance_is_a ()
   from /usr/lib/libgobject-2.0.so.0
#1  0xb7e9738e in gtk_widget_hide () from /usr/lib/libgtk-x11-2.0.so.0
#2  0x081324fa in update_frame_tool_bar (f=0x8aa61a0)
    at /home/nickrob/emacs/src/gtkutil.c:3830
#3  0x0807db50 in redisplay_tool_bar (f=0x8aa61a0)
    at /home/nickrob/emacs/src/xdisp.c:9842
#4  0x08085e7a in redisplay_window (window=148581604, just_this_one_p=0)
    at /home/nickrob/emacs/src/xdisp.c:13493
#5  0x080813d7 in redisplay_window_0 (window=148581604)
    at /home/nickrob/emacs/src/xdisp.c:11801
#6  0x081bf52c in internal_condition_case_1 (
    bfun=0x80813a4 <redisplay_window_0>, arg=148581604, handlers=138040677, 
    hfun=0x8081383 <redisplay_window_error>)
    at /home/nickrob/emacs/src/eval.c:1544
#7  0x0808136a in redisplay_windows (window=148581604)
    at /home/nickrob/emacs/src/xdisp.c:11780
#8  0x08081336 in redisplay_windows (window=148740388)
    at /home/nickrob/emacs/src/xdisp.c:11774
#9  0x0808065a in redisplay_internal (preserve_echo_area=0)
    at /home/nickrob/emacs/src/xdisp.c:11337
#10 0x0807e950 in redisplay () at /home/nickrob/emacs/src/xdisp.c:10551
#11 0x0813a76c in read_char (commandflag=0, nmaps=0, maps=0x0, 
---Type <return> to continue, or q <return> to quit---
    prev_event=138053881, used_mouse_menu=0x0, end_time=0xbff903a8)
    at /home/nickrob/emacs/src/keyboard.c:3167
#12 0x081da65e in read_filtered_event (no_switch_frame=0, ascii_required=0, 
    error_nonascii=0, input_method=0, seconds=40)
    at /home/nickrob/emacs/src/lread.c:506
#13 0x081da8bb in Fread_event (prompt=138053833, 
    inherit_input_method=138053833, seconds=40)
    at /home/nickrob/emacs/src/lread.c:612
#14 0x081c1a3e in Ffuncall (nargs=4, args=0xbff904c0)
    at /home/nickrob/emacs/src/eval.c:3042
#15 0x081fafa6 in Fbyte_code (bytestr=136632955, vector=136632972, 
    maxdepth=40) at /home/nickrob/emacs/src/bytecode.c:679
#16 0x081c21e4 in funcall_lambda (fun=136632892, nargs=1, 
    arg_vector=0xbff907f4) at /home/nickrob/emacs/src/eval.c:3223
#17 0x081c1c73 in Ffuncall (nargs=2, args=0xbff907f0)
    at /home/nickrob/emacs/src/eval.c:3082
#18 0x081fafa6 in Fbyte_code (bytestr=145350971, vector=143811924, 
    maxdepth=32) at /home/nickrob/emacs/src/bytecode.c:679
#19 0x081c21e4 in funcall_lambda (fun=143812092, nargs=0, 
    arg_vector=0xbff90b14) at /home/nickrob/emacs/src/eval.c:3223
#20 0x081c1c73 in Ffuncall (nargs=1, args=0xbff90b10)
    at /home/nickrob/emacs/src/eval.c:3082
#21 0x081fafa6 in Fbyte_code (bytestr=144762227, vector=144775420, 
---Type <return> to continue, or q <return> to quit---
    maxdepth=72) at /home/nickrob/emacs/src/bytecode.c:679
#22 0x081c0b61 in Feval (form=144011357)
    at /home/nickrob/emacs/src/eval.c:2373
#23 0x081bef14 in internal_catch (tag=138330369, func=0x81c06a1 <Feval>, 
    arg=144011357) at /home/nickrob/emacs/src/eval.c:1229
#24 0x081fbbba in Fbyte_code (bytestr=144762195, vector=144776076, 
    maxdepth=16) at /home/nickrob/emacs/src/bytecode.c:854
#25 0x081c21e4 in funcall_lambda (fun=144776204, nargs=2, 
    arg_vector=0xbff91254) at /home/nickrob/emacs/src/eval.c:3223
#26 0x081c1c73 in Ffuncall (nargs=3, args=0xbff91250)
    at /home/nickrob/emacs/src/eval.c:3082
#27 0x081c118f in Fapply (nargs=2, args=0xbff91300)
    at /home/nickrob/emacs/src/eval.c:2524
#28 0x081c155b in apply1 (fn=143383985, arg=144170589)
    at /home/nickrob/emacs/src/eval.c:2788
#29 0x081bb8f1 in Fcall_interactively (function=143383985, 
    record_flag=138053881, keys=138102100)
    at /home/nickrob/emacs/src/callint.c:406
#30 0x08146e85 in Fcommand_execute (cmd=143383985, record_flag=138053881, 
    keys=138053833, special=138053833)
    at /home/nickrob/emacs/src/keyboard.c:10335
#31 0x08147206 in Fexecute_extended_command (prefixarg=138053833)
    at /home/nickrob/emacs/src/keyboard.c:10451
---Type <return> to continue, or q <return> to quit---
#32 0x081c19e4 in Ffuncall (nargs=2, args=0xbff91750)
    at /home/nickrob/emacs/src/eval.c:3036
#33 0x081bd2bc in Fcall_interactively (function=138102977, 
    record_flag=138053833, keys=138102100)
    at /home/nickrob/emacs/src/callint.c:862
#34 0x08146e85 in Fcommand_execute (cmd=138102977, record_flag=138053833, 
    keys=138053833, special=138053833)
    at /home/nickrob/emacs/src/keyboard.c:10335
#35 0x0813835e in command_loop_1 () at /home/nickrob/emacs/src/keyboard.c:1951
#36 0x081bf420 in internal_condition_case (bfun=0x8136f46 <command_loop_1>, 
    handlers=138120425, hfun=0x81368ea <cmd_error>)
    at /home/nickrob/emacs/src/eval.c:1494
#37 0x08136c9f in command_loop_2 () at /home/nickrob/emacs/src/keyboard.c:1405
#38 0x081bef14 in internal_catch (tag=138102761, 
    func=0x8136c7c <command_loop_2>, arg=138053833)
    at /home/nickrob/emacs/src/eval.c:1229
#39 0x08136c55 in command_loop () at /home/nickrob/emacs/src/keyboard.c:1384
#40 0x081364f8 in recursive_edit_1 ()
    at /home/nickrob/emacs/src/keyboard.c:993
#41 0x08136666 in Frecursive_edit ()
    at /home/nickrob/emacs/src/keyboard.c:1055
#42 0x08134edf in main (argc=3, argv=0xbff92224)
    at /home/nickrob/emacs/src/emacs.c:1778

Lisp Backtrace:
"read-event" (0x83a88c9)
"sit-for" (0x28)
"vm-display-startup-message" (0x8dc2413)
"byte-code" (0x8a0e573)
"vm" (0x83a88c9)
"call-interactively" (0x88bddb1)
"execute-extended-command" (0x83a88c9)
"call-interactively" (0x83b48c1)