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[Octave-bug-tracker] [bug #54187] fail to close a busy figure and crash


From: Hartmut
Subject: [Octave-bug-tracker] [bug #54187] fail to close a busy figure and crash octave
Date: Mon, 7 Jan 2019 08:04:30 -0500 (EST)
User-agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:64.0) Gecko/20100101 Firefox/64.0

Follow-up Comment #8, bug #54187 (project octave):

I have compiled and tested a current dev Octave (hg-id bf835b1d04b1) without
any additional patches:
* I can reproduce the CRASH from comment #4
* I can reproduce the CRASH from comment #0
* (I have not tested the other ways of crashing)

When I then add Pantxo's patch from comment #7 and recompile:
* I canNOT provoce any crash when trying the steps from comment #4. I can
click as often as I want on the x in the plot windows. Using Ctrl-C afterwards
in the Octave console will properly stop the while look and Octave is still
alive.
* I also canNOT provoce any crash with the steps in comment #0. The figure
window just nicly closes, when clicking the x in the window.
* Also the figure windows from comment #2 just neatly closes, when clicking
the x in the figure window. NO CRASH.
* I don't know if I did those steps all right (because I haven't tested this
with unpatched Octave). But I was not able to provoce ANY CRASH with the steps
mentioned in comment #6 either. Clicking on x closes the figure window fine.
But to get my Octave console back, I still also have to Ctrl-C. But this seems
fine to me (the code is an endless loop nevertheless.)

So this patch is definitly an improvement. Can anyone else confirm, that
Pantxo's patch fully FIXES this issue?

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