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Fixed in 2022.2.X

Fixed in 2021.2.X, 2022.1.X



Found in





Issue ID




[Android] [IL2CPP] 'MethodAccessException: Attempt to access method' is thrown when using Faster builds IL2CPP Code Generation



How to reproduce:
1. Download the attached project ''
2. Set IL2CPP Code Generation to Faster (smaller) builds
3. Build and Run 'SampleScene' Scene on Android device
4. Observe logs in logcat

Expected result: No exceptions are seen in logcat
Actual result: MethodAccessException is seen in logcat with following errors:
Error Unity MethodAccessException: Attempt to access method 'System.Collections.Generic.IEnumerable<PokerCore.Model.Achievements.AchievementConfig>.GetEnumerator' on type 'System.Collections.Generic.List<UnityEngine.Events.PersistentCall>' failed.
Error Unity   at System.Collections.Generic.List`1[T].AddEnumerable (System.Collections.Generic.IEnumerable`1[T] enumerable) [0x00000] in <00000000000000000000000000000000>:0 

Reproducible with: 2021.2.0a17, 2021.2.8f1, 2022.1.0b4, 2022.2.0a2
Could not test with: 2019.4.34f1, 2020.3.26f1, 2021.2.0a16 (The required feature is not implemented)

Reproducible with:
VLNQA00288, Samsung Galaxy J7 (SM-J730F), Android 8.1.0, CPU: Exynos 7 Octa 7870, GPU: Mali-T830

Not reproducible with:
VLNQA00316, Samsung Galaxy Note10 (SM-N970F), Android 9, CPU: Exynos 9 Series 9825, GPU: Mali-G76 (app crashes)
VLNQA00001, Google Pixel 2 (Pixel 2), Android 11, CPU: Snapdragon 835 MSM8998, GPU: Adreno (TM) 540 (app crashes)
VLNQA00225, Qualcomm null (SDM845 for arm64), Android 8.1.0, CPU: Snapdragon 845 SDM845, GPU: Adreno (TM) 630 (app crashes)
Iphone 11 (iOS 13.5) (app does not load)

- The issue can be reproduced on some Android devices only
- The app crashes on standalone and some Android devices
- The app does not load when building on iOS and shows an error in Xcode: Thread 1: EXC_BAD_ACCESS (code=1, address=0x400000082)
- Does not reproduce if IL2CPP Code Generation is set to Faster runtime

  1. Resolution Note (fix version 2022.2):

    Fixed in: 2022.2.0a8

  2. Resolution Note (fix version 2022.1):

    Fixed in: 2022.1.0b14

  3. Resolution Note (fix version 2021.2):

    Fixed in: 2021.2.17f1

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