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Fixed in 2020.1.X

Fixed in 2019.3.X

Votes

3

Found in

2019.3.0b8

2019.3.0f3

2020.1.0a9

Issue ID

1206498

Regression

Yes

Crash on ParticleSystem::EndUpdateAll() when exiting Play mode while a Particle System is simulating

Visual Effects - Legacy

-

How to reproduce:
1. Open the attached project '1206498.zip'
2. Open 'Main Menu (Console)' scene
3. Enter Play mode
4. Exit it
-- observe the crash

Reproducible with: 2019.3.0b8, 2019.3.0f5, 2020.1.0a9, 2020.1.0a18
Not reproducible with: 2018.4, 2019.2, 2019.3.0b7, 2020.1.0a8

First few lines of the stack trace:
#0 0x005566b764287e in ParticleSystem::EndUpdateAll()
#1 0x005566b764314d in ParticleSystem::InitializeClass()::PostLateUpdateParticleSystemEndUpdateAllRegistrator::Forward()
#2 0x005566ba0133fe in ExecutePlayerLoop(NativePlayerLoopSystem*)
#3 0x005566ba01346a in ExecutePlayerLoop(NativePlayerLoopSystem*)

Note:
- In the UIParticleRenderer.cs script the Start() method starts simulating a Particle System for 10 seconds, to reproduce the crash you have to exit Play mode in that period

  1. karl_jones

    Jan 04, 2020

    The issue is caused when a system has a stop action and gets destroyed while it is culled.
    We have a fix which will be available soon.

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Comments (14)

  1. wagenheimer

    Jan 24, 2020 02:07

    I can confirm this crash happens on Android Build using Unity 2019.3.0f5.

    Native StackTrace:

    Thread 0 (crashed)
    0 libunity.so 0x00000000d362140c ParticleSystem::EndUpdateAll() (ParticleSystem.cpp:2436)
    1 libunity.so 0x00000000d329b13d ExecutePlayerLoop(NativePlayerLoopSystem*)
    2 libunity.so 0x00000000d329b159 ExecutePlayerLoop(NativePlayerLoopSystem*)
    3 libunity.so 0x00000000d329b2e5 PlayerLoop()
    4 libunity.so 0x00000000d3371769 UnityPlayerLoop()
    5 libunity.so 0x00000000d337eba5 nativeRender(_JNIEnv*, _jobject*)
    6 base.odex 0x00000000d42e3b63 <system symbols missing>

    Will the upcoming also fix the problem for builds?

  2. Noname1122

    Jan 21, 2020 19:15

    I just received this issue as well on updating to 2019.3.0f5. It is 100% reproduceable.

  3. MrDizzle26

    Jan 16, 2020 21:57

    I'm still having this issue, Editor crashes in play mode

    PostLateUpdateParticleSystemEndUpdateAllRegistrator

    Seems to be related to the particles in my object pooling system.

  4. Saturn1004

    Jan 03, 2020 11:36

    I'm pretty sure I'm having this same bug without exiting play mode.
    It's crashing sometimes for me when a particle system is destroyed while playing, and it happens in out-of-editor builds which makes it a higher priority issue than the initial report suggests.

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