macOS Sierra + Qt 5.6.2 = ApplePersistenceIgnoreState issue?

agarny

Hi,

I have recently upgraded to Qt 5.6.2 and I don't know whether it is directly to it, but on macOS, my application now shows a message like this one:

2016-10-13 16:14:32.843 OpenCOR[3340:929508] ApplePersistenceIgnoreState: Existing state will not be touched. New state will be written to /var/folders/bp/8jz3rpfx5c91z2qgx7jfv9180000gn/T/ws.opencor.2016-10-13.savedState

I initially thought that it might have something to do with macOS Sierra, so I decided to try the previous version of my application (which was compiled using Qt 5.6.1) and everything is fine, i.e. I am not geting that ApplePersistenceIgnoreState related message.

If I then go back to my Qt 5.6.2 based application, the message is back...

Any ideas anyone?

Cheers, Alan.

P.S.: FWIW, I have googled for a solution and came across this, but even if their 'fix' could be applied to my situation, this is clearly not something that I am willing to ask my users to do...

agarny

Hmm, I have just realised that a possible culprit could be Xcode 8, to which I have also upgraded lately...

SGaist

Hi,

You can find here the use of ApplePersistenceIgnoreState.

And here how to shut off the message here.

agarny

I must be missing something because I cannot find anything using your first link.

As for your second link, it is the one I mentioned in my P.S., and it corresponds to what I don't want to have to do that to shut off that message. It's just not a neat solution. I mean that an end-user shouldn't have to enter that kind of a command at the terminal.

agarny

Oops, my bad regarding your first link. I had originally done a search for ApplePersistenceIgnoreState on that page, but it hadn't returned anything, but it does now. Not sure what happened!

Anyway, in the end, I think I might be able to apply the solution in the second link, this directly from my application. Will check that tomorrow...

agarny

It looks like ApplePersistenceIgnoreState might (only?) be for debugging purposes. Hmm, I am pretty certain that I was running the debug version of my application when I got that message. I am therefore wondering whether I will still get it with the release version of my application... (Sorry, thinking aloud here... :))

SGaist

Not a bad idea to share your thinking, it's a valid check.

Can you also test whether you have the same happening with 5.6.1 ?

There might be something that changed with Sierra or Qt 5.6.2.

agarny

With regards to Qt 5.6.1, I did try with the previous (release, not debug) version of my application (which was indeed built using Qt 5.6.1), and it didn't generate the aforementioned ApplePersistenceIgnoreState message.

All I think I know at this stage is that (on macOS Sierra):

Release w/ Qt 5.6.1 = fine.
Debug w/ Qt 5.6.2 = not fine.

I can definitely try Release w/ Qt 5.6.2, but it would be a bit tedious to try Debug w/ Qt 5.6.1 since I upgraded to Xcode 8 and Qt 5.6.1 is known not to work with Xcode 8 out of the box.

agarny

Hmm... not sure how and/or why, but (after having restarted my MBP) everything is now fine... In other words, I am not (for now at least) getting that ApplePersistenceIgnoreState message anymore...

agarny

FWIW, I now simply have this at the beginning of my main() method, thus 'fixing' my original problem:

#ifdef Q_OS_MAC
    QProcess::execute("defaults",
                      QStringList() << "write"
                                    << "ws.opencor"
                                    << "ApplePersistenceIgnoreState"
                                    << "NO");
#endif