bug#10159: bug#10263: 24.0.92; emacs crash with auto-complete plugin [SEC=UNCLASSIFIED]

[Alex Murray <alex.murray@dsto.defence.gov.au>]

UNCLASSIFIED

Okay I seem to be able to reproduce this fairly easily with the
following init.el settings and the recipe below:

;; install auto-complete from melpa since is pretty much the 
;; latest development version
(require 'package)
(add-to-list 'package-archives
             '("melpa" . "http://melpa.milkbox.net/packages/") t)
(package-initialize)
(package-install 'auto-complete)

;; auto-complete
(require 'auto-complete-config)
(ac-config-default)
(setq ac-auto-start 1) ; autostart with a single character       
(setq ac-auto-show-menu ac-delay)) ; show menu autoomatically
;; quick help has to be after menu so again set to 10ms more   
(setq ac-quick-help-delay (+ ac-auto-show-menu 0.01))

---------------------------------------------------

With the above init.el launch emacs and then switch to the scratch
buffer. Now type anything to get auto-complete to show up completions -
say just a single letter such as d - and then hit space very quickly
after that - it may take a bunch of tries to get it to crash but
eventually it seems that if you hit space just after auto-complete has
popped up the menu (and by just after I am talking fractions of a
second) emacs can crash. I think hitting space causes auto-complete to
hide the popup menu and then in redrawing the display emacs now
crashes...

On Mon, 2011-12-12 at 09:25 +1030, Alex Murray wrote:
> Sadly I have been unable to reproduce this bug [#10159] since 
> recompiling Emacs with no optimisations - however, I will certainly
try 
> to keep reproducing it - I am not so sure the fix in
> revision 106658 will fix this bug [#10159] since the crash is not at
the 
> same location, but I will also try and see if I can reproduce the
crash 
> with the latest trunk too.
> 
> On Sun 11 Dec 2011 21:01:24 CST, Eli Zaretskii wrote:
> >
> >>
> >> From:<yagnesh@live.com>
> >> Date: Sun, 11 Dec 2011 18:01:38 +0900
> >>
> >> Eli Zaretskii<eliz@gnu.org> writes:
> >>
> >>>
> >>>
> >>> It could be. But then it could be not: the crash in 10159 is in a
> >>> different place and is not reproducible. We can only deduce it's a
> >>> duplicate if the OP will report that it no longer crashes for
them.
> >>>
> >>
> >>
> >> @Eli
> >> I am the reporter of this bug. if you are referring me as OP here,
> >> I already sent an email confirming that this bug is fixed. But some
how
> >> that mail didn't show up in the list.
> >
> >
> > Your mail did show up, but I was not talking about this bug
(#10263),
> > I was talking about bug #10159, which AFAIK was filed by someone
> > else. Glenn was wondering whether 10159 was the same bug, and is
> > therefore also fixed. We'd need confirmation from Alex Murray about
> > that.




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