UIDynamicBehavior has an unsafe relationship with its dynamic animator.

Originator:jerry
Number:rdar://15827284 Date Originated:15-Jan-2014
Status:Open Resolved:
Product:iOS SDK Product Version:7
Classification: Reproducible:Always
 
Summary:
If a UIDynamicBehavior outlives its dynamicAnimator, it maintains an unsafe dangling pointer.

Steps to Reproduce:
1. Setup a dynamic animator and any UIDynamicBehavior behavior.
2. Keep a strong reference to the behavior
3. Let the dynamic animator deallocate
4. Reference a property (or call a method) on the value returned by the retained behavior's dynamicAnimator property.

Expected Results:
The dynamicAnimator returned by the behavior should either be a valid pointer to a dynamicAnimator, or nil.

Actual Results:
The value returned by dynamicAnimator is a dangling pointer.

Version:
iOS 7 SDK.

Notes:


Configuration:


Attachments:

https://github.com/jerryhjones/BadGravity

Comments


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