Since iOS 9 beta 5, converting audio to PCM mono crashes our apps

Originator:yonix85
Number:rdar://22360719 Date Originated:20-Aug-2015 05:19 PM
Status:Open Resolved:
Product:iOS Product Version:iOS 9 beta 5
Classification:Crash/Hang/Data Loss Reproducible:Always
 
Summary:
Attaching an altered version of the iPhoneExtAudioFileConverterTest sample project that shows the bug.
Code attached did NOT crash in earlier betas of iOS 9 and earlier versions of iOS, but is crashing in iOS 9 beta 5
It’s currently causes all the JoyTunes apps to crash in iOS 9 beta 5 when playing them on a real piano.

Steps to Reproduce:
Run attached project, convert to PCM 8k

Expected Results:
App will convert the audio and won’t crash

Actual Results:
App crashes

Regression:
Works on versions prior to iOS 9 beta 5 (including previous beta versions)

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