Crash when setting tintColor within tintColorDidChange

Originator:steipete
Number:rdar://19699978 Date Originated:03-Feb-2015 05:06 PM
Status:Open Resolved:
Product:iOS Product Version:iOS 8.1.3
Classification:Other Bug Reproducible:Always
 
Summary:
Setting the tintColor property of an UIView within tintColorDidChange can lead to a crash if UIAppearance rules are set.

Steps to Reproduce:
Open attached example. Observe crash.

Expected Results:
Should not crash.

Actual Results:
Throws an exception -[__NSArrayM insertObject:atIndex:]: object cannot be nil somewhere inside/near TaggingAppearanceObjectSetterIMP called from tintColorDidChange.

Regression:
This crashes on iOS 7 as well.

Notes:
I did some digging in https://gist.github.com/steipete/ec17149d8bfd615718fc

Seems to only happen if we both change tintColor and have appearance rules defined

Comments

Still happening with iOS 10.0.1 GM.

By steipete at Sept. 16, 2016, 2 p.m. (reply...)

Example: http://cl.ly/1X1l143I1U18

By steipete at Feb. 3, 2015, 4:08 p.m. (reply...)

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