Bug 53360 - Assertion failure in UITableView
Summary: Assertion failure in UITableView
Alias: None
Product: iOS
Classification: Xamarin
Component: General ()
Version: XI 10.4 (C9)
Hardware: Macintosh Mac OS
: --- normal
Target Milestone: Future Cycle (TBD)
Assignee: Bugzilla
Depends on:
Reported: 2017-03-15 14:37 UTC by Shay
Modified: 2017-05-11 23:58 UTC (History)
4 users (show)

Is this bug a regression?: ---
Last known good build:

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Description Shay 2017-03-15 14:37:40 UTC
I won't be able to give a short example where this occurs, but what I've been experiencing is the following:

2017-03-15 10:25:12.555 ClimbTag.iOS[4059:1658310] *** Assertion failure in -[UITableView _endCellAnimationsWithContext:], /BuildRoot/Library/Caches/com.apple.xbs/Sources/UIKit/UIKit-3600.6.22/UITableView.m:1594

Seems somehow related to a listview with sections after removal of a section.
Would be nice if you guys could take a look at what is going on there and why such assertion might be triggered....
Comment 1 Timothy Risi 2017-03-15 19:27:31 UTC
Can you provide your full environment information for where this is occuring.  And are there any crash logs or stack traces beyond the error message you posted?

The easiest way to get exact version information is to use the "Xamarin Studio" menu, "About Xamarin Studio" item, "Show Details" button and copy/paste the version informations (you can use the "Copy Information" button).
Comment 2 Shay 2017-03-15 19:38:12 UTC
Sorry, no additional crash logs are available.

Xamarin environment:

=== Xamarin Studio Business ===

Version 6.2 (build 1821)
Installation UUID: 07360e74-2c80-443b-94a1-6221c776bc97
	Mono 4.8.0 (mono-4.8.0-branch/e4a3cf3) (64-bit)
	GTK+ 2.24.23 (Raleigh theme)

	Package version: 408000495

=== NuGet ===


=== Xamarin.Profiler ===

Version: 1.2.0
Location: /Applications/Xamarin Profiler.app/Contents/MacOS/Xamarin Profiler

=== Apple Developer Tools ===

Xcode 8.2.1 (11766.1)
Build 8C1002

=== Xamarin.iOS ===

Version: (Xamarin Business)
Hash: 35d1ccd
Branch: cycle9
Build date: 2017-02-16 17:40:00-0500

=== Xamarin.Mac ===

Version: (Xamarin Business)

=== Xamarin Inspector ===

Hash: cdc01b9
Branch: 1.1-release
Build date: Wed, 22 Feb 2017 23:24:11 GMT

=== Xamarin.Android ===

Version: (Xamarin Business)
Android SDK: /Users/shayo/Library/Android/sdk
	Supported Android versions:
		4.0.3 (API level 15)
		4.4   (API level 19)
		5.0   (API level 21)
		5.1   (API level 22)
		6.0   (API level 23)
		7.0   (API level 24)
		7.1   (API level 25)

SDK Tools Version: 25.2.5
SDK Platform Tools Version: 25.0.3
SDK Build Tools Version: 25.0.1

Java SDK: /usr
java version "1.8.0_112"
Java(TM) SE Runtime Environment (build 1.8.0_112-b16)
Java HotSpot(TM) 64-Bit Server VM (build 25.112-b16, mixed mode)

Android Designer EPL code available here:

=== Xamarin Android Player ===

Version: 0.6.5
Location: /Applications/Xamarin Android Player.app

=== Build Information ===

Release ID: 602001821
Git revision: d41b6e51f3fa46a1943f2e31a778d28a7c73d069
Build date: 2017-02-17 15:18:19-05
Xamarin addins: 1363a8d943bab7700c93a97474060b6734aa7f94
Build lane: monodevelop-lion-cycle9

=== Operating System ===

Mac OS X 10.12.3
Darwin Shays-MacBook-Pro.local 16.4.0 Darwin Kernel Version 16.4.0
    Thu Dec 22 22:53:21 PST 2016
    root:xnu-3789.41.3~3/RELEASE_X86_64 x86_64
Comment 3 Vincent Dondain [MSFT] 2017-04-17 20:33:58 UTC
Hi Shay,

Without more information about your issue and how to reproduce it, it's gonna be hard (impossible) for us to investigate more.

We'd need like a small test case with your code, to understand the context in which this issue occurs or, as Tim said: "crash logs or stack traces beyond the error message you posted".

It's also possible this is a native issue, hence also happening in Objective-C/Swift and having the code could help us assert that (we/you could be a similar test case with Xcode).

In this case it would be a bug against Apple and we could certainly file a radar.

I'm marking this bug as NEEDINFO for now but if you can't provide more information we'll have to close it as NON_REPRODUCIBLE.
Comment 4 Shay 2017-04-17 22:36:12 UTC

Sorry. I can't provide additional information at this time. Call it non-reproducible.


Comment 5 Timothy Risi 2017-05-11 23:58:01 UTC
Marking as non-reproducible