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Fix In Review for 2021.1

Planned for 2019.4, 2020.1

Fixed in 2020.2

Votes

14

Found in

2019.4.2f1

2019.4.7f1

2020.1.0a5

2020.2

Issue ID

1270230

Regression

Yes

[iOS] Crash on il2cpp::vm::LivenessState::AddProcessObject when using Social.LoadUsers and then changing scenes

iOS

-

Reproduction steps:
1. Open attached project "Case_1270230"
2. Build and deploy the app to a device
3. In the build click the button labeled "Step 1."
4. Click the buttons "Step 2.", "Step 3." and "Step 4." in that order
5. Click the button "Step 5."
6. If the crash does not occur, repeat from the 4th reproduction step

Reproduces on: 2019.4.2f1, 2019.4.13f1, 2020.1.0a5, 2020.1.11f1, 2020.2.0b8
Not reproducible with: 2018.4.28f1, 2019.4.1f1, 2020.1.0a4
Could not test with: 2021.1.0a3 (app crashes upon clicking any of the buttons)

First lines of the stack trace:
* frame #0: 0x0000000102dcd9cc UnityFramework`il2cpp::vm::LivenessState::AddProcessObject(object=0x0000000200000000, state=0x000000010dd136c0) at Liveness.cpp:336:24 [opt]
frame #1: 0x0000000102dcd708 UnityFramework`il2cpp::vm::LivenessState::TraverseGCDescriptor(object=0x00000001078a14e8, state=0x000000010dd136c0) at Liveness.cpp:211:17 [opt]
frame #2: 0x0000000102dcd570 UnityFramework`il2cpp::vm::LivenessState::TraverseObjects(this=0x000000010dd136c0) at Liveness.cpp:148:13 [opt]
frame #3: 0x0000000102dcde50 UnityFramework`il2cpp::vm::Liveness::FromStatics(state=0x000000010dd136c0) at Liveness.cpp:491:25 [opt]
frame #4: 0x0000000102459238 UnityFramework`::GarbageCollectSharedAssets() [inlined] MarkManagedStaticVariableRoots at GarbageCollectSharedAssets.cpp:633:5 [opt]

Notes:
1. The issue requires Social.LoadUsers() to return at least one user
2. Usually crashes within 10 tries to change the Scene

Reproducible with:
iPhone 6 (iOS 12.4.8)
iPhone 7 (iOS 12.3.1)

  1. Response avatar

    Resolution Note (fix version 2020.2):

    Fixed in: 2020.2.0b13

Comments (1)

  1. 8f11d0a9577b8af1cb731ba7f279980b?d=mm

    psjcap_unity

    Oct 29, 2020 06:35

    It also happens on Android armv7 processor.

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