[Possible bug] OnAudioFilterRead freezes editor (2019.0.1)

Why does this code work perfectly fine in Unity 5 (I asked a friend to test), but it freezes my editor in 2019.0.1f2? I can't wrap my head around this. The Oscillator class implements a wavetable and returns a float between -1 and 1 when the Calculate function is called. I can recall using this same code on older versions of Unity (all in Windows) and it always just worked, but somehow in Linux it fails.

Code (CSharp):

1. [RequireComponent(typeof(AudioSource))]
2. public class SoundPlayer
3. {
4.     public Oscillator[] oscillators[3];
5.     private AudioSource audioSource;
6.     private float currentData = 0f;
7.  
8.     private void Start()
9.     {  
10.         audioSource = gameObject.GetComponent<AudioSource>();
11.     }
12.  
13.     void OnAudioFilterRead(float[] data, int channels)
14.     {
15.         for (int i = 0; i < data.Length; i++)
16.         {
17.             currentData = 0;
18.  
19.             for (int j = 0; j < oscillators.Length; j++)
20.             {
21.                 currentData += oscillators[j].Calculate(counter, 44100);
22.             }
23.  
24.             counter++;
25.  
26.             data[i] = currentData;
27.         }
28.     }
29. }

 

After upgrading to 2019.3.0a12 I can confirm it was a bug and my code is working like it should with no freezes. Still not sure what was wrong in the other version but it definitely was a bug.

 

On Linux, we were previously using a very small stack size on the audio mixer thread, making it very easy to get a crash or stack overflow in OnAudioFilterRead.
This has been changed in Unity 2019.2.

 

Thanks for the update, after upgrading this problem was solved.