[Octave-patch-tracker] [patch #7949] octave-gui freezes for 30+ seconds when trying to display a new documentation tab

[Dan Sebald]

Follow-up Comment #4, patch #7949 (project octave):

We can wait for 5.1, but the initial setup before your mod didn't look that
good.

I too noticed that the destructor is working properly now.  Someone removed
"delete _terminal" from

delete _terminal_dock_widget;
delete _terminal;

The _terminal was contained inside _terminal_dock_widget, so it was as though
calling the destructor on _terminal twice.  Someone must have caught this in
the past week or so.  I just wrote a patch
http://hg.savannah.gnu.org/hgweb/octave/rev/28136851099a that removes
_terminal so that confusion won't arise again.

The thing is, although there was a crash, it went unnoticed because error
messages were in the terminal window, which consequently is removed from the
screen.  I've also written a patch that restores the STDERR at shutdown so
that the messages go to the shell window and not the GUI terminal.

https://savannah.gnu.org/bugs/?38648

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