TTS problem iOS 17 beta

Hi there! When you get a moment, please file a bug report using Feedback Assistant here https://developer.apple.com/bug-reporting/

It will help the team triage and understand the issue if you're able to upload the crash report and a sysdiagnose using the tool. Thank you!

Hi, I have already filed one -> see https://feedbackassistant.apple.com/feedback/12417110.

I am now able to reproduce the problem, just use TTS with "Xcode address sanitizer" enabled on a real device shows the problem (in simulator it doesn't).

let synth         = AVSpeechSynthesizer()
let utterance  = AVSpeechUtterance(string: "Here we go")
       
synth.speak(utterance)                               // synthprovider.offlineRendering problem

Same here. Also able to reproduce with address sanitizer enabled. @And0Austria, I can't see your bug report in Feedback Assistant (can only see my own entries). I know it's a long shot, but did you get any response from Apple on your bug report? Or did you find a workaround to prevent the crash?

Same here, Has anyone found a working solution for this problem yet?

I also encountered the same problem, mostly triggered when switching to the foreground after being in the background for more than 10 minutes, and the available memory was very low. Only occurs in iOS17

This is still happening with the last RC, and Xcode 15 does not compile when the address sanitizer is enabled, so we can also not debug it.

I can confirm that we also have crashes in iOS17 related to TTS.

I am going to report them, but Apple has never fixed any of the issues I have reported in 14 years of iOS development, so I hope that at least they can use the crashlog to figure out something.

• This is our biggest crash and is affecting more than 200 users.
• It is happening either with compiling with Xcode 15, or also in previous versions.
• It is happening to users who have iOS17 in their phones.

--- Crashed: com.apple.main-thread EXC_BAD_ACCESS KERN_INVALID_ADDRESS 0x0000000147482280 0 libobjc.A.dylib objc_retain_x8 + 16 1 AudioToolboxCore auoop::RenderPipeUser::~RenderPipeUser() + 112 2 AudioToolboxCore -[AUAudioUnit_XPC internalDeallocateRenderResources] + 92 3 AVFAudio AUInterfaceBaseV3::Uninitialize() + 60 4 AVFAudio AVAudioEngineGraph::PerformCommand(AUGraphNodeBaseV3&, AVAudioEngineGraph::ENodeCommand, void*, unsigned int) const + 772 5 AVFAudio AVAudioEngineGraph::_Uninitialize(NSError**) + 132 6 AVFAudio AVAudioEngineImpl::Stop(NSError**) + 396 7 AVFAudio -[AVAudioEngine dealloc] + 52 8 TextToSpeech TTSSpeechLanguageCanonicalFormToGeneralLanguage 9 libobjc.A.dylib object_cxxDestructFromClass(objc_object*, objc_class*) + 116 10 libobjc.A.dylib objc_destructInstance + 80 11 libobjc.A.dylib _objc_rootDealloc + 80 12 TextToSpeech TTSSpeechLanguageCanonicalFormToGeneralLanguage 13 TextToSpeech TTSVocalizerCopyURLForFallbackResource 14 TextToSpeech TTSSpeechUnitTestingMode 15 TextToSpeech AXAVSpeechSynthesisVoiceFromTTSSpeechVoice 16 libobjc.A.dylib object_cxxDestructFromClass(objc_object*, objc_class*) + 116 17 libobjc.A.dylib objc_destructInstance + 80 18 libobjc.A.dylib _objc_rootDealloc + 80 19 TextToSpeech TTSSpeechTransformTextWithLanguageAndVoiceIdentifier

have the same problem on watchOS 10.

I had the same problem，please replay me if there is a solution.

The same problem is even in iOS17.0.3. :(

I meet the same problem also even in iOS17.0.3.

Faced the same issue and I implemented a workaround that so far seems working (still testing the app but didn't crash after letting "talk" for 20 hours). Releasing a reallocating the AVSpeechSynthesizer every "x" time it speeches (after checking it is not speaking - that includes queued utterance, at least from my tests).

Hope this helps, waiting for a resolution of the bug.

Please comment here in case you still see crashes from the same bug.

- (void)speechSynthesizer:(AVSpeechSynthesizer *)synthesizer didFinishSpeechUtterance:(nonnull AVSpeechUtterance *)utterance
{
    countVoiceAnnouced++;
    
    // doing this to workaround apple bug - crashing after "x" speeches
    if (countVoiceAnnouced > SPEECHES_BEFORE_RESETTING_BUG_APPLE && !voiceSynthesizer.isSpeaking)
    {
        voiceSynthesizer = nil;
        voiceSynthesizer = [[AVSpeechSynthesizer alloc] init];
        voiceSynthesizer.usesApplicationAudioSession = YES;
        voiceSynthesizer.delegate = self;

        countVoiceAnnouced = 0;
    }
}

@apanda not really, unfortunately... didn't crash anymore while in foreground, but with app going in background (changing the AVAudioSession as inactive) when back in foreground (reactivating the AVAudioSession and speaking) the app crashes "more often". Think I might need to disable the "voice" functionalities in my app until this is fixed

Same problem here when seeing crashes from production on iOS 17.0 - 17.1. Added a feedback to Apple as well. I actually went through crash reports and the issue is happening on the current iOS 17.2 beta as well, no fix there.

Does anyone have an update on this issue? Neither the iOS 17.2 beta 2 nor the Xcode 15.1 Beta 2 release notes mention it

I am also seeing this stack trace in the crash logs that Apple send via Organiser.

My app uses TTS on the iPhone and the Apple Watch and I get this crash for both iOS 17 and watchOS 10.

It feels like it has something to do with calling the stop method and not actually stopping

We are now switching to OpenAI voices to avoid having unhappy customers with crashes in the middle of performing workouts.

Cons: Our app needs to work offline so we have to add all the possible voice messages to the app... which will be quite a lot of files considering all the localisations we support.

Pros: A lot better text-to-speech audio that doesn't sound computer generated compared to Siri.

My users are still reporting this issue in iOS 17.2.1. Are there any known workarounds?