SEGV in xmenu.c digest_single_submenu

[Sascha Wilde]

Hi *,

I had emacs crashing this morning, getting a SIGSEGV after starting
gnus, erc and opening a C source file.

Luckily I was able to reproduce the crash after starting emacs from
gdb.

Unfortunately I have no experience in debugging large, complex C code
and especially none debugging Emacs C core and very little time.

Here is what I got:

run
Starting program: /vol1/opt/cvs-emacs/bin/emacs 

Program received signal SIGSEGV, Segmentation fault.
0x08088b12 in digest_single_submenu (start=1, end=203, top_level_items=0)
    at xmenu.c:1833
1833              if (STRING_MULTIBYTE (item_name))
(gdb) where
#0  0x08088b12 in digest_single_submenu (start=1, end=203, top_level_items=0)
    at xmenu.c:1833
#1  0x080891b5 in set_frame_menubar (f=0x8603b38, first_time=1, deep_p=1)
    at xmenu.c:2123
#2  0x08089802 in initialize_frame_menubar (f=0x8603b38) at xmenu.c:2327
#3  0x080d526c in Fx_create_frame (parms=153915677) at xfns.c:3329
#4  0x08154a8b in Ffuncall (nargs=2, args=0x0) at eval.c:2901
#5  0x0818066d in Fbyte_code (bytestr=137887409, vector=1, 
    maxdepth=-1073749432) at bytecode.c:694
#6  0x08154447 in funcall_lambda (fun=136390924, nargs=1, 
    arg_vector=0xbfffe394) at eval.c:3088
#7  0x08154854 in Ffuncall (nargs=2, args=0xbfffe390) at eval.c:2956
#8  0x0818066d in Fbyte_code (bytestr=137887409, vector=1, 
    maxdepth=-1073749104) at bytecode.c:694
#9  0x08154447 in funcall_lambda (fun=136818468, nargs=1, 
    arg_vector=0xbfffe460) at eval.c:3088
#10 0x0815460e in apply_lambda (fun=136818468, args=136818464, eval_flag=1)
    at eval.c:3010
#11 0x08153c85 in Feval (form=136818464) at eval.c:2299
#12 0x08154251 in Fprogn (args=0) at eval.c:432
#13 0x08154529 in funcall_lambda (fun=139293040, nargs=0, 
    arg_vector=0xbfffe6c4) at eval.c:3081
#14 0x08154854 in Ffuncall (nargs=1, args=0xbfffe6c0) at eval.c:2956
---Type <return> to continue, or q <return> to quit--

I'll leave the debugger session open for now, so if you need further
information, please tell me what to do...  ;-)

cheers
sascha
-- 
Sascha Wilde : "Lies, was ich meine, nicht, was ich schreibe."
             : (Urs Traenkner in de.alt.admin)