[Bug: 21.4.12] crash while using clearcase-checkout menu.

[Ben Wing]

This looks like trying to access a freed value.  This may well be a race
condition; there are various of them that I've been fixing in 21.5.
unfortunately they are hard to flush out.

> -----Original Message-----
> /usr/X11R6/lib/X11/locale/common/xlcDef.so.2...done.
> Loaded symbols for /usr/X11R6/lib/X11/locale/common/xlcDef.so.2
> #0  0x42028851 in kill () from /lib/i686/libc.so.6
> (gdb) bt
> #0  0x42028851 in kill () from /lib/i686/libc.so.6
> #1  0x080a773b in fatal_error_signal (sig=11) at emacs.c:642
> #2  <signal handler called>
> #3  0x08191bbd in display_menu_item (mw=0x836bd20, 
> val=0xdeadbeef, ws=0x85603a0,
>     where=0xbfffe8b4, highlighted=0 '\0', horizontal=0 '\0', 
> just_compute=0 '\0')
>     at xlwmenu.c:1511
> #4  0x08192082 in display_menu (mw=0x836bd20, level=1, 
> just_compute_p=0 '\0',
>     highlighted_pos=0x0, hit=0x0, hit_return=0x0, this=0x0, 
> that=0x0) at xlwmenu.c:2279 #5  0x081930b4 in 
> XlwMenuRedisplay (w=0x836bd20, ev=0xbfffeb60, region=0x82f5288)
>     at xlwmenu.c:3115
> #6  0x400f9dea in _XtEventInitialize () from 
> /usr/X11R6/lib/libXt.so.6 #7  0x400f9b7d in 
> XtDispatchEventToWidget () from /usr/X11R6/lib/libXt.so.6 #8  
> 0x400f9915 in XtDispatchEventToWidget () from 
> /usr/X11R6/lib/libXt.so.6 #9  0x400fa18d in _XtOnGrabList () 
> from /usr/X11R6/lib/libXt.so.6 #10 0x400fa4df in 
> XtDispatchEvent () from /usr/X11R6/lib/libXt.so.6 #11 
> 0x4010664b in XtAppProcessEvent () from 
> /usr/X11R6/lib/libXt.so.6 #12 0x08172960 in 
> emacs_Xt_event_pending_p (user_p=1) at event-Xt.c:2985 #13 
> 0x080d362a in Fnext_event (event=140264508, 
> prompt=1079092624) at event-stream.c:893 #14 0x080929da in 
> Fcommand_loop_1 () at cmdloop.c:574 #15 0x080ab1ed in 
> condition_case_1 (handlers=1079092264, bfun=0x8092c10 
> <command_loop_1>,
>     barg=1079092624, hfun=0x8092c8c <cmd_error>, 
> harg=1079092624) at eval.c:1652 #16 0x08092e60 in 
> command_loop_2 (dummy=1079092624) at cmdloop.c:256 #17 
> 0x080ab0c1 in internal_catch (tag=1078917952, func=0x8092e1c 
> <command_loop_2>,
>     arg=1079092624, threw=0x0) at eval.c:1318
> #18 0x0809273c in initial_command_loop (load_me=1079092624) 
> at cmdloop.c:305 #19 0x080a867b in 
> xemacs_21_4_12_i686_pc_linux (argc=1, argv=0xbffff0f4, 
> envp=0xbffff0fc,
>     restart=0) at emacs.c:2460
> #20 0x080a8cf7 in main (argc=1, argv=0xbffff0f4, 
> envp=0xbffff0fc) at emacs.c:2829 #21 0x420158f7 in 
> __libc_start_main () from /lib/i686/libc.so.6
>