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Re: 4.2.2 release

From: Daniel J Sebald
Subject: Re: 4.2.2 release
Date: Mon, 20 Nov 2017 14:35:06 -0600
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.2.1

On 11/20/2017 02:26 PM, Dmitri A. Sergatskov wrote:
On Mon, Nov 20, 2017 at 2:02 PM, John W. Eaton <address@hidden <mailto:address@hidden>> wrote:

    On 11/20/2017 02:41 PM, Daniel J Sebald wrote:

        On 11/08/2017 01:17 PM, John W. Eaton wrote:

            There have been about 70 changes made that address at least
            50 bugs since 4.2.1, so it's probably time for a new release.

            Are there any additional *critical* bugs that should be
            fixed on stable before releasing 4.2.2?

        I think this one is worth incorporating into 4.2.2 given that it
        seems the solution is fairly straightforward to address a
        segfault issue on MacOS:

        bug #50025: Octave window freezes when I quit Octave GUI

        Crashing even when exiting is kind of annoying as history might
        not be saved and if run via a script octave returning an error
        code could also cause issues.

        The gist of it is that the GUI should wait for the worker
        process to finish ending before moving on.  I suspect on MacOS
        there may be a problem of quitting the GUI when a thread is not
        yet finished or is suspended.  But there may be another means of
        doing this rather than the technique in the submitted patch
        (which itself is based on a Qt example).  The signal could be
        changed to have the blocking property. However, no one has
        pursued that approach because few of us use MacOS regularly to test.

    I remember reworking the way that the interpreter is started from
    the GUI and the way things are cleaned up on exit.  I did the work
    on the default branch.  Is this crash/hanging problem still present
    on OS X with that branch?

​I am not sure if this is the same problem or not, but 4.2.1 crashes on Fedora 27 after exit (either gui or octave --no-gui; octave-cli is OK)

octave:1> quit

panic: Aborted -- stopping myself...
attempting to save variables to 'octave-workspace'...
panic: attempted clean up failed -- aborting...
Aborted (core dumped)

It did not in Fedora 26. perhaps it is related to Qt up date (it is 5.9.2 in FC27)

That very well may be the issue. I posted to the bug report inquiring if someone could check the default branch in MacOS for this problem.


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