bug#9087: Crash reading from minibuffer with icomplete-mode

[Eli Zaretskii]

> Date: Sat, 07 Jan 2012 12:52:09 +0100
> From: martin rudalics <rudalics@gmx.at>
> CC: claudio.bley@gmail.com, lekktu@gmail.com, 9087@debbugs.gnu.org
> 
>  > The choice of `nth' is just one possibility to trigger this; you can
>  > do it in any code that calls some primitive which sets immediate_quit
>  > non-zero.
> 
> Thanks for all these explanations.  A final question: I have to set
> `debug-on-quit' or `debug-on-error' to trigger the crash.  How do these
> enter here?

No idea.  For me, it happened even without those.

What GCC version do you use, and does it make any difference to try in
an unoptimized build?