[TIMOB-27440] iOS: Uncaught exception-handler overridden incorrectly

GitHub Issue	n/a
Type	Bug
Priority	None
Status	Open
Resolution	Unresolved
Affected Version/s	Release 8.2.0
Fix Version/s	n/a
Components	n/a
Labels	engSchedule
Reporter	Hans Knöchel
Assignee	Unknown
Created	2019-10-03T10:28:28.000+0000
Updated	2019-10-15T15:41:31.000+0000

Description

We are seeing an uncaught exception handler warning in TitaniumKit that has been caught by Crashlytics:

[DEBUG] [Crashlytics:Crash] Warning: NSUncaughtExceptionHandler is 'TiUncaughtExceptionHandler' in '/Users/user/Library/Developer/CoreSimulator/Devices/xx/data/Containers/Bundle/Application/yy/MyApp.app/Frameworks/TitaniumKit.framework/TitaniumKit'

This has only been uncovered because of the logging improvements of TIMOB-27331 and may exists for a long time. The reason for it is that the TiUncaughtExceptionHandler overrides the parent exception handler incorrectly, causing other exception handlers to report crashes incorrectly.

Comments

Hans Knöchel 2019-10-03

Since I cannot edit my tickets anymore, here some additional notes after some investigation: * I think it's Xcode 11 only (so highly relevant for 8.2.1) * It occurs since a while but wasn't uncovered so far because the "old" logging system did not stream all native logs to the console. * To reproduce, simply run a sample app with an SDK that has the changes from TIMOB-27331 (again, that one isn't causing the issues but makes it possible to uncover them)

JSON Source