One more thing, after pressing the 'X' button several times and JUST
BEFORE the last time that causes the crash, the following message
appears in the octave console:
"
panic: Interrupt -- stopping myself...

attempting to save variables to `octave-core'...

save to `octave-core' complete
"
This shows that the crash occurs when you try to kill octave and it's
already gone.

On Wed, 2008-08-13 at 10:13 +0000, Noam Lewis wrote:
> Bug reproduced with strace-ing.
> The problem seems to be that it sends a SIGINT to the init process (pid 0):
> See the end of the attached strace log:
> 
>     8587  kill(0, SIGINT)
> 
> You can try it yourself by simply running qtoctave and pressing the 'X' 
> button _several_ times.
> I'm not a QT whiz, but maybe you should read this:
> http://doc.trolltech.com/3.3/qprocess.html#kill
> (Instead of calling the 'kill' system call directly)
> 
> and this:
> http://doc.trolltech.com/3.3/qprocess.html#isRunning
> 
> My guess is that QTOctave is trying to kill the connection process after
> it has been killed.
> 
> 
> 
> ** Attachment added: "qtoctave_strace.log.gz"
>    http://launchpadlibrarian.net/16739492/qtoctave_strace.log.gz
>

-- 
QtOctave "Stop process" button killed Xorg
https://bugs.launchpad.net/bugs/251133
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