Hi again,
I have now created a new bug report and attached a test case that
reproduces the crashes. It's a much smaller project. I found the test case
on StackOverflow and Rolf Bjarne Kvinge suggested a fix. But I still get
the same crashes even after I applied the fix.
http://stackoverflow.com/questions/6708705/monotouch-sigsegv-crash-using-navigationcontroller-and-searchdisplaycontroller/6769885#6769885
You can see the bug report here,
https://bugzilla.xamarin.com/show_bug.cgi?id=13703
Best regards,
Daniel
2013/8/1 Nic Wise [via MonoTouch] <ml-node+s2284126n4658414...@n4.nabble.com
>
> No problem - sorry we couldn't find a solution!
>
> On 1 August 2013 11:17, Nordis <[hidden
> email]<http://user/SendEmail.jtp?type=node&node=4658414&i=0>>
> wrote:
>
> > I got a comment on a thread on StackOverflow from Rolf, so at least he's
> > awake. ;-)
> >
> http://stackoverflow.com/questions/17986348/crash-related-to-uitableviewcontroller-uisearchdisplaycontroller-in-monotouch
> > But he asked if this helped,
> >
> http://stackoverflow.com/questions/6708705/monotouch-sigsegv-crash-using-navigationcontroller-and-searchdisplaycontroller/6769885#6769885
> >
> > That's the fix I've already tried. I've already activated debug symbols
> for
> > the release, I'm guessing that's the reason I actually can see that it
> has
> > something to do with [UISearchDisplayController
> _destroyManagedTableView]
> >
> > Once again, thanks for all you're replies!
> >
> > 2013/8/1 Nic Wise <[hidden email]>
> >>
> >> Kind of strange. The main difference usually in Release vrs Debug is
> >> just if there are debug symbols.
> >>
> >> Maybe turn that on for release, and see if it still dies...
> >>
> >> I suspect you need Rolf or Sebastien tho :) If they dont reply here
> >> (they'll both be asleep at the moment, I think, tho Rolf is based in
> >> Spain last time I checked), you could also email support@xamarin, tho
> >> a bug report first, and point support at that, helps a LOT.
> >>
> >>
> >>
> >>
> >>
> >> On 1 August 2013 10:36, Daniel Nordmark <[hidden email]> wrote:
> >> > I really appreciate that you've tried to help!
> >> >
> >> > Just to clearify things, I can get the app to crash in the simulator
> >> > too, if
> >> > I compile the app in release mode. I actually looked alot at
> Xamarin's
> >> > example add EmployerDirectory and I can't see whats differs my app
> from
> >> > theirs when it comes to how I perform a search and how I handle my
> >> > UITableViewController / UISearchDisplayController.
> >> >
> >> >
> >> > 2013/8/1 Nic Wise <[hidden email]>
> >>
> >> >>
> >> >> I suggest you try to distill it down to a small sample, and put a
> bug
> >> >> up on the Xamarin bugzilla site (bugzilla.xamarin.com).
> >> >>
> >> >> Very odd tho. Maybe also have a look at MonoTouch.Dialog which has a
> >> >> search box, but doesn't crash....
> >> >>
> >> >> Crashing on device vrs sim isn't uncommon tho - the sim is a proper
> >> >> JIT machine, same/similar as the desktop framework, and the GC isn't
> >> >> overly aggressive. Once you get it on the device, it's AOT, and the
> GC
> >> >> gets a lot more aggressive about releasing things.
> >> >>
> >> >> I've CCed in Rolf and Sebastien as they may have[*] better ideas
> >> >>
> >> >> [*]: "may have" -> are very likely to have.
> >> >>
> >> >> On 1 August 2013 10:20, Nordis <[hidden email]> wrote:
> >> >> > Same problem if I remove that code,
> >> >> > https://gist.github.com/Nordis/6129762
> >> >> >
> >> >> > I was able to reproduce the crash a lot quicker when I removed the
> >> >> > code,
> >> >> > usually the crash occurs after 1-2 minutes. But with no code att
> all
> >> >> > in
> >> >> > Dispose the crash occured after a few seconds.
> >> >> >
> >> >> > Also the crash only seems to happens when I compile in release
> mode.
> >> >> >
> >> >> >
> >> >> > 2013/8/1 Nic Wise [via MonoTouch] <[hidden email]>
> >> >> >>
> >> >> >> That SO question is from 2011, and the GC and other things have
> >> >> >> changed hugely since then, esp in 6.4 (the latest one) which is
> Mono
> >> >> >> 3.x as well as having a new GC by default
> >> >> >>
> >> >> >> So you may not even need to do that. What happens if you take it
> out
> >> >> >> completely?
> >> >> >>
> >> >> >> Rolf is often around here, so he may be able to expand on it a
> bit.
> >> >> >>
> >> >> >> On 1 August 2013 09:53, Nordis <[hidden email]> wrote:
> >> >> >>
> >> >> >> > Thanks for your quick reply,
> >> >> >> >
> >> >> >> > I've tried to change BeginInvokeOnMainThread to
> >> >> >> > InvokeOnMainThread,
> >> >> >> > but
> >> >> >> > still the same problem. The crash dump looks the same to me,
> >> >> >> > https://gist.github.com/Nordis/6129637
> >> >> >> >
> >> >> >> > Then I tried to remove InvokeOnMainThread and only set the
> >> >> >> > properties
> >> >> >> > to
> >> >> >> > null,
> >> >> >> > searchController.Delegate = null;
> >> >> >> > searchController.SearchResultsDelegate = null;
> >> >> >> > searchController.SearchResultsSource = null;
> >> >> >> >
> >> >> >> > But then I got this exception,
> >> >> >> > MonoTouch.UIKit.UIKitThreadAccessException: UIKit Consistency
> >> >> >> > error:
> >> >> >> > you
> >> >> >> > are
> >> >> >> > calling a UIKit method that can only be invoked from the UI
> >> >> >> > thread.
> >> >> >> > at MonoTouch.UIKit.UIApplication.EnsureUIThread () [0x00000]
> in
> >> >> >> > <filename
> >> >> >> > unknown>:0
> >> >> >> > at MonoTouch.UIKit.UISearchDisplayController.set_WeakDelegate
> >> >> >> > (MonoTouch.Foundation.NSObject value) [0x00000] in <filename
> >> >> >> > unknown>:0
> >> >> >> > at MonoTouch.UIKit.UISearchDisplayController.set_Delegate
> >> >> >> > (MonoTouch.UIKit.UISearchDisplayDelegate value) [0x00000] in
> >> >> >> > <filename
> >> >> >> > unknown>:0
> >> >> >> > at Diet52App.FoodSearchBase.Dispose (Boolean disposing)
> >> >> >> > [0x00000]
> >> >> >> > in
> >> >> >> > <filename unknown>:0
> >> >> >> > at MonoTouch.Foundation.NSObject.Finalize () [0x00000] in
> >> >> >> > <filename
> >> >> >> > unknown>:0
> >> >> >> >
> >> >> >> > I got the idea to set searchController's properties to null by
> >> >> >> > reading
> >> >> >> > this
> >> >> >> > thread,
> >> >> >> >
> >> >> >> >
> >> >> >> >
> >> >> >> >
> http://stackoverflow.com/questions/6708705/monotouch-sigsegv-crash-using-navigationcontroller-and-searchdisplaycontroller?rq=1
> >> >> >> >
> >> >> >> > Best regards,
> >> >> >> >
> >> >> >> > Daniel
> >> >> >> >
> >> >> >> >
> >> >> >> > 2013/8/1 Nic Wise [via MonoTouch] <[hidden email]>
> >> >> >> >>
> >> >> >> >> Hi Nordis
> >> >> >> >>
> >> >> >> >> If I had to guess, I'd say this is the problem
> >> >> >> >>
> >> >> >> >> protected override void Dispose (bool disposing)
> >> >> >> >> {
> >> >> >> >> // Hopefully fixes SIGSEGV error
> >> >> >> >> //
> >> >> >> >>
> >> >> >> >>
> >> >> >> >>
> >> >> >> >>
> http://stackoverflow.com/questions/6708705/monotouch-sigsegv-crash-using-navigationcontroller-and-searchdisplaycontroller?rq=1
> >> >> >> >> BeginInvokeOnMainThread (() => {
> >> >> >>
> >> >> >> >> searchController.Delegate = null;
> >> >> >> >> searchController.SearchResultsDelegate = null;
> >> >> >> >> searchController.SearchResultsSource = null;
> >> >> >> >> });
> >> >> >> >> base.Dispose (disposing);
> >> >> >> >> }
> >> >> >> >>
> >> >> >> >>
> >> >> >> >> BeginInvokeOnMainThread will call it and return immediately -
> so
> >> >> >> >> your
> >> >> >> >> searchController may have been disposed of by the time the
> >> >> >> >> background
> >> >> >> >> thread runs.
> >> >> >> >>
> >> >> >> >> try changing it to either not use the call at all, or use
> >> >> >> >> InvokeOnMainThread, which waits for the code to execute before
> >> >> >> >> continuing.
> >> >> >> >>
> >> >> >> >>
> >> >> >> >> "Unlike NSObject.BeginInvokeOnMainThread(NSAction) this method
> >> >> >> >> waits
> >> >> >> >> for the main thread to execute the method, and does not return
> >> >> >> >> until
> >> >> >> >> the code pointed by action has completed running."
> >> >> >> >>
> >> >> >> >>
> >> >> >> >>
> >> >> >> >>
> >> >> >> >> On 1 August 2013 09:16, Nordis <[hidden email]> wrote:
> >> >> >> >>
> >> >> >> >> > I'm having problem to find the cause of random crashes in my
> >> >> >> >> > app.
> >> >> >> >> > The
> >> >> >> >> > crashes
> >> >> >> >> > only occurs when I build in release mode and run on a device
> >> >> >> >> > like
> >> >> >> >> > iPhone
> >> >> >> >> > or
> >> >> >> >> > iPad. Running in debug on simulator no crashes occurs. My
> guess
> >> >> >> >> > is
> >> >> >> >> > that
> >> >> >> >> > the
> >> >> >> >> > problem has something to do with these two lines in the
> crash
> >> >> >> >> > log,
> >> >> >> >> >
> >> >> >> >> > 6 UIKit 0x34a193d0
> >> >> >> >> > -[UISearchDisplayController
> >> >> >> >> > _destroyManagedTableView] + 68
> >> >> >> >> > 7 UIKit 0x34a2195a
> >> >> >> >> > -[UISearchDisplayController
> >> >> >> >> > dealloc] + 94
> >> >> >> >> > I've uploaded the source code of my UITableViewController
> and
> >> >> >> >> > the
> >> >> >> >> > full
> >> >> >> >> > crash
> >> >> >> >> > log here, https://gist.github.com/Nordis/6128735
> >> >> >> >> >
> >> >> >> >> > All help to track the cause of the crashes is much
> appreciated!
> >> >> >> >> >
> >> >> >> >> >
> >> >> >> >> >
> >> >> >> >> > --
> >> >> >> >> > View this message in context:
> >> >> >> >> >
> >> >> >> >> >
> >> >> >> >> >
> >> >> >> >> >
> http://monotouch.2284126.n4.nabble.com/Crash-related-to-UITableViewController-UISearchDisplayController-in-MonoTouch-Xamarin-iOS-tp4658405.html
> >> >> >> >> > Sent from the MonoTouch mailing list archive at Nabble.com.
> >> >> >> >> > _______________________________________________
> >> >> >> >> > MonoTouch mailing list
> >> >> >> >> > [hidden email]
> >> >> >> >> > http://lists.ximian.com/mailman/listinfo/monotouch
> >> >> >> >>
> >> >> >> >>
> >> >> >> >>
> >> >> >> >> --
> >> >> >> >> Nic Wise
> >> >> >> >> t. <a href="tel:%2B44%207788%20592%20806" value="<a
> >> >> >> >> href="tel:%2B447788592806" value="<a
> href="tel:%2B447788592806"
> >> >> >> >> value="+447788592806" target="_blank">+447788592806"
> >> >> >> >> target="_blank"><a href="tel:%2B447788592806"
> >> >> >> >> value="+447788592806" target="_blank">+447788592806"
> >>
> >> >> >> >> target="_blank"><a href="tel:%2B44%207788%20592%20806"
> >> >> >> >> value="<a href="tel:%2B447788592806" value="+447788592806"
> >> >> >> >> target="_blank">+447788592806" target="_blank"><a
> >> >> >> >> href="tel:%2B44%207788%20592%20806" value="+447788592806"
> >> >> >> >> target="_blank">+44 7788 592 806 |
> >> >> >> >> @fastchicken
> >> >> >> >> b. http://www.fastchicken.co.nz/
> >> >> >>
> >> >> >> >> _______________________________________________
> >> >> >> >> MonoTouch mailing list
> >> >> >> >> [hidden email]
> >> >> >> >> http://lists.ximian.com/mailman/listinfo/monotouch
> >> >> >> >>
> >> >> >> >>
> >> >> >> >> ________________________________
> >> >> >> >> If you reply to this email, your message will be added to the
> >> >> >> >> discussion
> >> >> >> >> below:
> >> >> >> >>
> >> >> >> >>
> >> >> >> >>
> >> >> >> >>
> >> >> >> >>
> http://monotouch.2284126.n4.nabble.com/Crash-related-to-UITableViewController-UISearchDisplayController-in-MonoTouch-Xamarin-iOS-tp4658405p4658406.html
> >> >> >> >> To unsubscribe from Crash related to UITableViewController /
> >> >> >> >> UISearchDisplayController in MonoTouch/Xamarin.iOS, click
> here.
> >> >> >> >> NAML
> >> >> >> >
> >> >> >> >
> >> >> >> >
> >> >> >> > ________________________________
> >> >> >> > View this message in context: Re: Crash related to
> >> >> >> > UITableViewController
> >> >> >> > /
> >> >> >> > UISearchDisplayController in MonoTouch/Xamarin.iOS
> >> >> >> >
> >> >> >> > Sent from the MonoTouch mailing list archive at Nabble.com.
> >> >> >> >
> >> >> >> > _______________________________________________
> >> >> >> > MonoTouch mailing list
> >> >> >> > [hidden email]
> >> >> >> > http://lists.ximian.com/mailman/listinfo/monotouch
> >> >> >> >
> >> >> >>
> >> >> >>
> >> >> >>
> >> >> >> --
> >> >> >> Nic Wise
> >> >> >> t. <a href="tel:%2B44%207788%20592%20806" value="<a
> >> >> >> href="tel:%2B447788592806" value="+447788592806"
> >> >> >> target="_blank">+447788592806"
> >> >> >> target="_blank"><a href="tel:%2B44%207788%20592%20806"
> >> >> >> value="+447788592806" target="_blank">+44 7788 592 806 |
> @fastchicken
> >> >> >> b. http://www.fastchicken.co.nz/
> >> >> >> _______________________________________________
> >> >> >> MonoTouch mailing list
> >> >> >> [hidden email]
> >> >> >> http://lists.ximian.com/mailman/listinfo/monotouch
> >> >> >>
> >> >> >>
> >> >> >> ________________________________
> >> >> >> If you reply to this email, your message will be added to the
> >> >> >> discussion
> >> >> >> below:
> >> >> >>
> >> >> >>
> >> >> >>
> >> >> >>
> http://monotouch.2284126.n4.nabble.com/Crash-related-to-UITableViewController-UISearchDisplayController-in-MonoTouch-Xamarin-iOS-tp4658405p4658408.html
> >> >> >> To unsubscribe from Crash related to UITableViewController /
> >> >> >> UISearchDisplayController in MonoTouch/Xamarin.iOS, click here.
> >> >> >> NAML
> >> >> >
> >> >> >
> >> >> >
> >> >> > ________________________________
> >> >> > View this message in context: Re: Crash related to
> >> >> > UITableViewController
> >> >> > /
> >> >> > UISearchDisplayController in MonoTouch/Xamarin.iOS
> >> >> > Sent from the MonoTouch mailing list archive at Nabble.com.
> >> >> >
> >> >> > _______________________________________________
> >> >> > MonoTouch mailing list
> >> >> > [hidden email]
> >> >> > http://lists.ximian.com/mailman/listinfo/monotouch
> >> >> >
> >> >>
> >> >>
> >> >>
> >> >> --
> >> >> Nic Wise
> >> >> t. <a href="tel:%2B44%207788%20592%20806" value="+447788592806"
> >> >> target="_blank">+44 7788 592 806 | @fastchicken
> >> >> b. http://www.fastchicken.co.nz/
> >> >
> >> >
> >>
> >>
> >>
> >> --
> >> Nic Wise
> >> t. <a href="tel:%2B44%207788%20592%20806" value="+447788592806"
> >> target="_blank">+44 7788 592 806 | @fastchicken
> >> b. http://www.fastchicken.co.nz/
> >
> >
> >
> > ________________________________
> > View this message in context: Re: Crash related to UITableViewController
> /
> > UISearchDisplayController in MonoTouch/Xamarin.iOS
> > Sent from the MonoTouch mailing list archive at Nabble.com.
> >
> > _______________________________________________
> > MonoTouch mailing list
> > [hidden email] <http://user/SendEmail.jtp?type=node&node=4658414&i=1>
> > http://lists.ximian.com/mailman/listinfo/monotouch
> >
>
>
>
> --
> Nic Wise
> t. +44 7788 592 806 | @fastchicken
> b. http://www.fastchicken.co.nz/
> _______________________________________________
> MonoTouch mailing list
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>
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