21.2.18 SEGV failure -- null frame pointer
21.2.18 built and installed fine under Linux, but I've gotten a couple
of these this morning already. I always attach gdb to my XEmacs which
runs Gnus. I have the core, but the core's stack (being post-
continuation after death-dealing signal) shows only the final __kill()
and fatal_error_signal() stack frames.
Thoughts on what might be wrong here?
Program received signal SIGSEGV, Segmentation fault.
x_to_emacs_keysym (event=0x7ffff528, simple_p=0) at frame.h:248
248 assert (EQ (FRAME_TYPE (f), sym));
(gdb) bt
#0 x_to_emacs_keysym (event=0x7ffff528, simple_p=0) at frame.h:248
#1 0x81a9468 in x_event_to_emacs_event (x_event=0x7ffff528,
emacs_event=0x8be9ad4) at event-Xt.c:999
#2 0x81ab6c7 in emacs_Xt_event_handler (wid=0x85a0718, closure=0x0,
event=0x7ffff528, continue_to_dispatch=0x7ffff463 "\001pö1\b,")
at event-Xt.c:2472
#3 0x2ab9cc9f in XtDispatchEventToWidget ()
#4 0x2ab9d6fd in _XtDefaultDispatcher ()
#5 0x2ab9d975 in XtDispatchEvent ()
#6 0x2aba83d5 in XtAppProcessEvent ()
#7 0x81abe33 in emacs_Xt_event_pending_p (user_p=1) at event-Xt.c:2628
#8 0x80d954d in detect_input_pending () at event-stream.c:945
#9 0x80dba9d in Fnext_event (event=142911672, prompt=137112340)
at event-stream.c:2237
#10 0x807330e in Fcommand_loop_1 () at cmdloop.c:569
#11 0x807309d in command_loop_1 (dummy=137112340) at cmdloop.c:493
#12 0x8091741 in condition_case_1 (handlers=137112436,
bfun=0x807304c <command_loop_1>, barg=137112340,
hfun=0x80724d0 <cmd_error>, harg=137112340) at eval.c:1640
#13 0x8073538 in command_loop_2 (dummy=137112340) at cmdloop.c:255
#14 0x809131c in internal_catch (tag=137186628,
func=0x8073504 <command_loop_2>, arg=137112340, threw=0x0) at eval.c:1315
#15 0x8072937 in initial_command_loop (load_me=137112340) at cmdloop.c:304
#16 0x808cf5d in xemacs_21_2_b18_i686_pc_linux (argc=5, argv=0x7ffff9b4,
envp=0x7ffff9cc, restart=0) at emacs.c:1759
#17 0x808d6e9 in main (argc=5, argv=0x7ffff9b4, envp=0x7ffff9cc)
at emacs.c:2184
(gdb) list
243 INLINE struct frame *
244 error_check_frame_type (struct frame * f, Lisp_Object sym);
245 INLINE struct frame *
246 error_check_frame_type (struct frame * f, Lisp_Object sym)
247 {
248 assert (EQ (FRAME_TYPE (f), sym));
249 return f;
250 }
251 # define FRAME_TYPE_DATA(f, type) \
252 ((struct type##_frame *) (error_check_frame_type (f, Q##type))->frame_data)
(gdb) p f
$1 = (struct frame *) 0x0
System is RedHat 5.2. Installation file:
uname -a: Linux beaver.jprc.com 2.2.10-ac10 #1 SMP Tue Jul 13 13:23:27 EDT 1999 i686
unknown
./configure '--with-pop' '--with-mule' '--with-png'
XEmacs 21.2-b18 "Toshima" configured for `i686-pc-linux'.
Where should the build process find the source code?
/home/karl/src/x/xemacs-21/xemacs-21.2.18
What installation prefix should install use? /usr/local
What operating system and machine description files should XEmacs use?
`s/linux.h' and `m/intel386.h'
What compiler should XEmacs be built with? gcc -g -O3 -Wall -Wno-switch
Should XEmacs use the GNU version of malloc? yes
(Using Doug Lea's new malloc from the GNU C Library.)
Should XEmacs use the relocating allocator for buffers? yes
What window system should XEmacs use? x11
Where do we find X Windows header files? /usr/X11R6/include
Where do we find X Windows libraries? /usr/X11R6/lib
Compiling in support for XAUTH.
Compiling in support for XPM images.
Compiling in support for PNG image handling.
Compiling in support for (builtin) GIF image handling.
Compiling in support for JPEG image handling.
Compiling in support for TIFF image handling.
Compiling in support for X-Face message headers.
Compiling in native sound support.
Compiling in support for Berkeley DB.
Compiling in support for GNU DBM.
Compiling in support for ncurses.
Compiling in support for GPM (General Purpose Mouse).
Compiling in Mule (multi-lingual) support.
Compiling in XIM (X11R5+ I18N input method) support.
Using raw Xlib to provide XIM support.
Compiling in support for proper WM_COMMAND handling.
Using Lucid menubars.
Using Lucid scrollbars.
Using Athena dialog boxes.
Compiling in DLL support.
movemail will use "dot-locking" for locking mail spool files.
Using POP for mail access.
Compiling in extra code for debugging.
WARNING: ---------------------------------------------------------
WARNING: Compiling in support for runtime error checking.
WARNING: XEmacs will run noticeably more slowly as a result.
WARNING: Error checking is on by default for XEmacs beta releases.
WARNING: ---------------------------------------------------------