bug#11351: 24.1.50; marker does not point anywhere

[Sam Steingold <sds@gnu.org>]

> * Eli Zaretskii <ryvm@tah.bet> [2012-04-26 16:48:12 +0300]:
>
>> From: Sam Steingold <sds@gnu.org>
>> Date: Thu, 26 Apr 2012 09:29:37 -0400
>> 
>> Lisp Backtrace:
>> "recursive-edit" (0xffffb5c8)
>> "debug" (0xffffb858)
>> 
>> emacs displays the *Backtrace* buffer with a single line:
>> 
>> debugger entered--lisp error: (error "Marker does not point anywhere")
>
> Is this error always shown when this happens?

yes.

> If so, what markers could be involved?

I have no idea. I have not been able to make Emacs responsive after this
happens.

> what were you doing when this happens?

it happened twice (or 3 times?) so far.
the last time I was applying patches with C-c C-a in *vc-diff* buffer.
it is quite possible that I was doing that the first time too, but I am
not sure.

> Do you have any guesses as to what that overlay might be?

no, but if you tell me what C variable to examine (and how), I will
gladly do that when this happens again.

-- 
Sam Steingold (http://sds.podval.org/) on Ubuntu 11.10 (oneiric) X 11.0.11004000
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