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Won't Fix

Won't Fix in 2023.1.X

Votes

0

Found in

2020.3.40f1

2021.3.11f1

2022.1.19f1

2022.2.0b10

2023.1.0a13

Issue ID

UUM-17066

Regression

No

IL2CPP Build fails when UniTask variable is declared in the struct

IL2CPP

-

Reproduction steps:

  1. Open the attached project (“IL2CPPUniTaskBug.zip“)
  2. Select Scene Assets/Scenes/SampleScene
  3. Build Project File>Build And Run

Expected results: Build completes
Actual results: Build fails

Reproducible with: 2020.3.40f1, 2021.3.11f1, 2022.1.19f1, 2022.2.0b10, 2023.1.0a13

Reproduced on: Windows 11

  1. Resolution Note:

    This is a limitation of il2cpp (.Net Framework and CoreCLR). At code generation time and at runtime il2cpp processes instance and static fields at the same time. Your case creates a circular dependency between `Result` and the inflated `UniTask<Result>`.

    We do not plan to fix this in il2cpp as CoreCLR also does not handle this case and we are in the process of adding CoreCLR support to the Unity Player.

    If Microsoft decides to fix this issue we will re-evaluate the bug for il2cpp.

    https://github.com/dotnet/runtime/issues/5479

  2. Resolution Note (2023.1.X):

    This is a limitation of il2cpp (.Net Framework and CoreCLR). At code generation time and at runtime il2cpp processes instance and static fields at the same time. Your case creates a circular dependency between `Result` and the inflated `UniTask<Result>`.

    We do not plan to fix this in il2cpp as CoreCLR also does not handle this case and we are in the process of adding CoreCLR support to the Unity Player.

    If Microsoft decides to fix this issue we will re-evaluate the bug for il2cpp.

    https://github.com/dotnet/runtime/issues/5479

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