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Duplicate
Votes
1
Found in
2019.3
2019.4
2019.4.4f1
2020.1
2020.2
Issue ID
1265045
Regression
No
Crash on scripting_class_is_subclass_of when trying to display corrupted data from JsonUtility when using SerializeReference
Reproduction steps:
1. Open the attached project ("1265045.zip")
2. Open scene "TestJsonRead"
3. Enter Play mode
4/5. Press the "Start" button in Game View
4/5. Select "Canvas" GameObject in The Hierarchy so it's properties would be displayed in the Inspector
(4th and 5th steps can be interchangeable)
Reproducible with: 2019.3.16f1, 2019.4.8f1, 2020.1.2f1, 2020.2.0a20
Couldn't test with: 2018.4.26f1 due to compilation errors and SerializeReference was introduced in 2019.3
First lines of the stacktrace:
0x00007ff6639834aa (Unity) scripting_class_is_subclass_of
0x00007ff662251313 (Unity) ManagedReferencesRegistry::RegisterReference
0x00007ff6639c570b (Unity) StreamedBinaryWrite::TransferWithTypeString<ArrayOfManagedReferencesTransferer>
0x00007ff6639d92f1 (Unity) Transfer_ManagedObjectRef<StreamedBinaryWrite,1>
0x00007ff6639b40ac (Unity) TransferField_LinearCollection<ReportScriptingObjectsTransfer>
Notes:
- Might crash silently
- Before the crash this assertion failure might show up in Editor logs:
"* Assertion at ..\mono\metadata\class.c:8919, condition `ac->rank' not met"
- Doesn't always crash, but consistent enough to investigate
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This is a duplicate of issue #1198073