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Votes

0

Found in

2019.4

2019.4.28f1

2020.3

Issue ID

1378444

Regression

No

[Android][IL2CPP] ExecutionEngineException error message appears in Android Logcat when using IL2CPP Scripting Backend in Build

IL2CPP

-

Reproduction steps:
1. Open the attached Unity project "ErrorBug.zip"
2. Open the "testbed.unity" Scene
3. In the Editor open the Android Logcat window
4. Build and install the application on a device
5. Observe the error message that appears in the Android Logcat window

Expected result: No error appears
Actual result: An error message appear: "ExecutionEngineException: Attempting to call method 'LanguageExt.ListModule+ListEnumerator`1+NewStack[[Rayark.Data, Assembly-CSharp, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null]]::New' for which no ahead of time (AOT) code was generated."

Reproducible with: 2019.4.33f1, 2020.3.23f1
Could not test with: 2021.2.3f1, 2022.1.0a16 (Editor freeze when trying to build project)

Reproduces with these devices:
VLNQA00219 - Samsung Galaxy Note9 USA (SM-N960U), OS: 8.1.0, CPU: Snapdragon 845 SDM845, GPU: Adreno 630
VLNQA00070 - LENOVO PHAB2 Pro (Lenovo PB2-690M), OS: 6.0.1, CPU: Snapdragon 617 MSM8952, GPU: Adreno 510
VLNQA00121 - Samsung Galaxy S9 (SM-G960F), OS: 9.0.0, CPU: Exynos 9 Series 9810, GPU: Mali-G72
VLNQA00006 - Samsung Galaxy S7 (SM-G930F), OS: 8.0.0, CPU: Exynos 8 Octa (8890), GPU: Mali-T880
VLNQA00277 - Asus ROG Phone (ASUS_Z01QD), OS: 9.0.0, CPU: Snapdragon 845 SDM845, GPU: Adreno 630
VLNQA00410 - Galaxy Z Fold3 5G (SM-F926U), OS: 11, CPU: Snapdragon 888, GPU: Adreno 660
VLNQA00404 - Galaxy Z Flip3 5G (SM-F711B), OS: 11, CPU: Snapdragon 888, GPU: Adreno 660
VLNQA00034 - Google Nexus 4 (mako), OS: 5.1.1, CPU: Snapdragon S4 Pro APQ8064, GPU: Adreno 320

Not reproducible with these devices:
VLNQA00147 - Razer Phone (Cheryl), OS: 8.1.0, CPU: Snapdragon 835 MSM8998, GPU: Adreno 540
VLNQA00109 - Xiaomi Mi Note Pro (MI NOTE Pro), OS: 7.0.0, CPU: Snapdragon 810 MSM8994, GPU: Adreno 430

Notes:
- Issue is not reproducible with Mono Scripting Backend

  1. Response avatar

    Resolution Note (2022.1.X):

    This is a limitation of IL2CPP. The error message means that IL2CPP could not find the generic code using a value-type generic argument to match this at compile time. There is some information about how to work around this limitation in the general case here:

    https://docs.unity3d.com/Manual/ScriptingRestrictions.html

    This limitation is not present for JIT code generation, so it works with Mono. In Unity 2022.1 and later this limitation has been removed from IL2CPP.

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