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Fixed in 2022.1.X

Fixed in 2021.2.X

Votes

17

Found in

2021.2

2021.2.0a21

Issue ID

1343996

Regression

No

Target runtime doesn't support default interface implementation

Mono

-

Reproduction steps:
1. Open the "DefaultInterfaceImpl.zip" project attached by the user
2. Observe the Console window

Expected result: No errors in the Console
Actual result: Console logs an error "Assets/ITestInterface.cs(5,7): error CS8701: Target runtime doesn't support default interface implementation."

Reproducible with: 2021.2.0b1

Note:
- Can't test with 2018.4, 2019.4, 2020.3, 2021.1 because support for default interface methods was introduced in 2021.2.0a21

  1. Response avatar

    Resolution Note (fix version 2022.1):

    Fixed in 2022.1.0a3

  2. Response avatar

    Resolution Note (fix version 2021.2):

    Fixed in 2021.2.0b6

Comments (1)

  1. A75c2548788aed77a7903561cf0d33a3?d=mm

    NornIndustries

    Jun 24, 2021 17:09

    I've upgraded Unity to 2021.2.0b1.3029, and Visual Studio to 16.10.2, and Visual Studio Editor package to 2.0.9. Cmd also reports: .NET SDK is 5.0.301 and version 5.0.7 (NETCore 3.1.16 & 5.0.7, etc)

    Still getting: "Target runtime doesn't support default interface implementation." when I try and make a concrete function inside an interface.

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