[Octave-bug-tracker] [bug #47958] GUI freezes when starting debug with a partly drawn Qt figure

[Rik]

Follow-up Comment #5, bug #47958 (project octave):

Still present.  When I use "Ctrl+C" in the terminal window the GUI suddenly
re-activates and I get the following messages


>> debug_on_error (1);
>> a.one = 1;
>> a.two = 2;
>> imagesc (a);
error: invalid value for array property "cdata"
error: called from
    image>__img__ at line 205 column 5
    image at line 125 column 10
    imagesc at line 101 column 12
stopped in /home/rik/wip/Projects_Mine/octave-stable/scripts/image/image.m at
line 205
205:   h = __go_image__ (hax, "cdata", img, "xdata", xdata, "ydata", ydata,
debug> error: value on right hand side of assignment is undefined
error: called from
    image at line 125 column 10
    imagesc at line 101 column 12
stopped in /home/rik/wip/Projects_Mine/octave-stable/scripts/image/image.m at
line 125
125:     htmp = __img__ (hax, do_new, x, y, img, varargin{chararg:end});
debug>
debug> error: 'htmp' undefined near line 134 column 9
error: called from
    image at line 133 column 3
    imagesc at line 101 column 12
stopped in /home/rik/wip/Projects_Mine/octave-stable/scripts/image/image.m at
line 133
133:   if (nargout > 0)
debug>


As you can see from the last bit, it is now in debug mode as expected.

It seems like there is a deadlock, probably over octave_link, where one side
is waiting for the other, but the other side believes it has already moved
on.


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