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Fixed in 2022.1.X

Fixed in 2021.2.X

Votes

0

Found in

2021.2.0a18

2021.2.0b11

2022.1

Issue ID

1364524

Regression

Yes

Crash on IsTypeTreePPtr when switching variable to another type that inherits from the same class

Serialization

-

Reproduction steps:
1. Open the user's attached project
2. Open the scene 'Assets\Scenes\SampleScene'
3. Select 'TestObject' in the Hierarchy
4. Tap the 'Change Type' checkbox in the Inspector

Expected result: The Editor does not crash
Actual result: The Editor crashes

Reproducible with: 2021.2.0a18, 2021.2.0b13, 2022.1.0a10
Not reproducible with: 2020.3.19f1, 2021.1.23f1, 2021.2.0a17
Couldn't test with: 2019.4.30f1

Notes:
1. The 'Change Type' checkbox may have to be pressed multiple times to reproduce the crash.
2. In the versions that do not reproduce the crash an error is thrown instead:
"Fields with [SerializeReference] cannot serialize inflated generic type in this case: TestScript.D<System.Int32>".
The same error is in the logs right before crashing in the versions that reproduce the issue.

Stacktrace:
0x00007ff7349075a3 (Unity) IsTypeTreePPtr
0x00007ff7357cd98f (Unity) CollectPropertyValuesFromSerializedObject
0x00007ff7357d383d (Unity) GeneratePropertyDiffInternal
0x00007ff7357d4035 (Unity) GeneratePropertyDiffInternal

  1. Resolution Note (fix version 2022.1):

    Fixed in 2022.1.0a13

  2. Resolution Note (fix version 2021.2):

    Fixed in 2021.2.1f1

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