Re: SEGV in xmenu.c digest_single_submenu

[Jan D.]

Sascha Wilde wrote:
> Richard Stallman <address@hidden> wrote:
>
> >     Luckily I was able to reproduce the crash after starting emacs from
> >     gdb.
> >
> > Can you tell us a precise recipe for reproducing it?
>
> I'm working on it.  I can reproduce the problem, but not with emacs -Q
> (only with loaded .emacs).
>
> What I do is 
> - start emacs 
> - C-x 5 f /PATH/TO/EMACS/src/xmenu.c
> => SIGSEGV
>
> GDB:
> Program received signal SIGSEGV, Segmentation fault.
> 0x08086f5c in digest_single_submenu (start=3803, end=4928,
> top_level_items=0)
>     at xmenu.c:1850
> 1850                save_wv->contents = wv;
> (gdb) p save_wv 
> $22 = (widget_value *) 0x0
>
>
> As you can see, the problem is at a little bit altered location,
> compared to my last report.  I can reproduce _this_ problem absolutely
> reliable, but only with .emacs loaded.
>
> I'm not sure what to look for in .emacs that might cause the
> problem -- but in any case I would think that lisp code shouldn't
> cause a SEGV in any case.

This is the same as the thread "Problem #18" talks about, save_wv being 
dereferenced while it is NULL.  Do our .emacs load any c-mode customizations, 
such as special menu entries?  Or some minor mode that adds a menu for C-files?

        Jan D.