Memory leak in WebEvent (UIWebView) on dismissing Keyboard

Originator:absessive
Number:rdar://21248956 Date Originated:04/06/2015
Status:Open Resolved:No
Product:iOS SDK Product Version:iOS 8.3
Classification: Reproducible:Yes
 
Summary:
When profiling an app with a UIWebView, after entering text to login, and the keyboard is dismissed automatically, there's a memory leak on WebEvent.

Steps to Reproduce:
After unzipping the project, run it on XCode 6.3.2
1. Launch the instruments and profile the app in an IOS 8.3 device.
2. Type text into the text fields and press enter
3. Dismiss the keyboard and wait for a few seconds.

Expected Results:
No memory leaks

Actual Results:
A memory leak with the leaked object - WebEvent and the following stack trace.

   4 UIKit -[UIKeyboardImpl _handleWebKeyEvent:withEventType:withInputString:withInputStringIgnoringModifiers:]
   5 UIKit -[UIKeyboardImpl _handleWebKeyEvent:withIndex:inInputString:executionContext:]
   6 UIKit -[UIKeyboardImpl _handleWebKeyEvent:withInputString:executionContext:]
   7 UIKit -[UIKeyboardImpl handleKeyEvent:executionContext:]
   8 UIKit __33-[UIKeyboardImpl handleKeyEvent:]_block_invoke
   9 UIKit -[UIKeyboardTaskQueue continueExecutionOnMainThread]
  10 UIKit -[UIKeyboardTaskQueue addTask:]
  11 UIKit -[UIKeyboardImpl handleKeyEvent:]
  12 UIKit -[UIApplication _handleKeyUIEvent:]


Version:
iOS 8.3

Notes:


Configuration:
iPad 2, iPod 5

Comments


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