Intermittent crash when playing a rive file that contains audio

[quintonpryce]

Description

On version 6.11.2, we have a rive animation that we play simply (ie. no looping, no setting artboards, statemachines etc.), and it is crashing (included is the stack trace).

rive::AudioEvent::play() + 116

OneVOneMe.OneVOne-Me_issue_f21df69d4da371cf633817d8a85610bd_crash_session_6f76fc4ad8d14aa79a7464811f493648_DNE_0_v2_stacktrace.txt

Source .riv/.rev file

Device & Versions (please complete the following information)

• Devices: Seems to be device agnostic
• iOS version 16-26

[quintonpryce]

success-stake-button.riv.zip

[m-yeroshenko]

I also experience a lot of crashes with 30% repro rate.
Stack trace:

#5 0x000000010594ddb0 in RiveView.advance(delta:) at /Users/admin/actions-runner/_work/rive-ios/rive-ios/Source/RiveView.swift:373
#6 0x000000010594da10 in RiveView.tick() at /Users/admin/actions-runner/_work/rive-ios/rive-ios/Source/RiveView.swift:350
#7 0x000000010594d6a0 in closure #1 in RiveView.startTimer() at /Users/admin/actions-runner/_work/rive-ios/rive-ios/Source/RiveView.swift:301
#8 0x00000001059524d4 in @objc RiveCADisplayLink._tick() [inlined] at /Users/admin/actions-runner/_work/rive-ios/rive-ios/Source/RiveDisplayLink.swift:87
#9 0x00000001059524d0 in @objc RiveCADisplayLink._tick() at /Users/admin/actions-runner/_work/rive-ios/rive-ios/:86

[PriyeshMohan]

Also facing the same issue.
I am on version -> 6.12.0

          Crashed: com.apple.main-thread
0  RiveRuntime                    0x59898 rive::AudioEvent::play() + 116
1  RiveRuntime                    0x59880 rive::AudioEvent::play() + 92
2  RiveRuntime                    0xeaaf4 rive::StateMachineInstance::notifyEventListeners(std::__1::vector<rive::EventReport, std::__1::allocator<rive::EventReport>> const&, rive::NestedArtboard*) + 536
3  RiveRuntime                    0xeccb4 rive::StateMachineInstance::applyEvents() + 620
4  RiveRuntime                    0xebd74 rive::StateMachineInstance::advance(float, bool) + 96
5  RiveRuntime                    0xea058 rive::StateMachineInstance::advanceAndApply(float) + 40
6  RiveRuntime                    0x1cd34 __swift_instantiateConcreteTypeFromMangledName + 11796
7  RiveRuntime                    0x1c990 __swift_instantiateConcreteTypeFromMangledName + 10864
8  RiveRuntime                    0x1c5fc __swift_instantiateConcreteTypeFromMangledName + 9948
9  RiveRuntime                    0x24764 __swift_allocate_value_buffer + 404
10 QuartzCore                     0x101d0 CA::Display::DisplayLinkItem::dispatch_(CA::SignPost::Interval<(CA::SignPost::CAEventCode)835322056>&) + 48
11 QuartzCore                     0xfdc8 CA::Display::DisplayLink::dispatch_items(unsigned long long, unsigned long long, unsigned long long) + 876
12 QuartzCore                     0x10364 CA::Display::DisplayLink::dispatch_deferred_display_links(unsigned int) + 360
13 UIKitCore                      0x9404 _UIUpdateSequenceRun + 84
14 UIKitCore                      0x8ab4 schedulerStepScheduledMainSection + 208
15 UIKitCore                      0x41e4 runloopSourceCallback + 92
16 CoreFoundation                 0xf92c __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 28
17 CoreFoundation                 0xf744 __CFRunLoopDoSource0 + 172
18 CoreFoundation                 0xf5a0 __CFRunLoopDoSources0 + 232
19 CoreFoundation                 0xff20 __CFRunLoopRun + 840
20 CoreFoundation                 0x11adc CFRunLoopRunSpecific + 572
21 GraphicsServices               0x1454 GSEventRunModal + 168
22 UIKitCore                      0x135274 -[UIApplication _run] + 816
23 UIKitCore                      0x100a28 UIApplicationMain + 336
24 SwiftUI                        0x3037a4 closure #1 in KitRendererCommon(_:) + 168
25 SwiftUI                        0x901c runApp<A>(_:) + 112
26 SwiftUI                        0x8ed0 static App.main() + 180
28 ???                            0x1c8669f08 (Missing)
        

[HayesGordon]

Has anyone been able to reproduce this issue locally? That would greatly help us in resolving this.

Did this only happen after updating? Was there a version you used prior that did not have this crash?

[khaptonstall]

Has anyone been able to reproduce this issue locally?

While I haven't been able to reproduce this locally, I wanted to add another data point.

We're using v6.11.4 and experiencing this issue. As mentioned previously, there's no distinct iOS version or device that this seems tied to.

For now, we've been able to mitigate this crash by setting the volume for our Rive viewModels to 0 to basically exit early from the rive::AudioEvent::play() method from which the crash has been occurring.

This should mean that the audio_event.cpp file is exiting the play() function at this line, which appears to highlight the crash exists somewhere below, in the following lines of code:

    auto engine =
#ifdef EXTERNAL_RIVE_AUDIO_ENGINE
        artboard()->audioEngine() != nullptr ? artboard()->audioEngine() :
#endif
                                             AudioEngine::RuntimeEngine();

    auto sound =
        engine->play(audioSource, engine->timeInFrames(), 0, 0, artboard());

    if (volume != 1.0f)
    {
        sound->volume(volume);
    }
#endif
}