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Fixed in 2021.3.9f1, 2022.1.16f1

Votes

0

Found in

2021.3.9f1

2022.1.14f1

Issue ID

UUM-10477

Regression

Yes

Crash on System.Buffer:InternalMemcpy when starting play mode

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Reproduction steps:
1. Open the user’s attached project
2. Click “Play”

Expected result: Console throws NullReferenceException
Actual result: Unity Editor crashes

Reproducible with: 2021.2.0a18, 2021.2.19f1, 2021.3.7f1, 2022.1.12f1
Not reproducible with: 2020.3.37f1, 2021.2.0a17, 2022.2.0a1, 2022.2.0b3, 2023.1.0a5

Reproducible on: Windows 10 Pro 21H2

First lines of the stack trace:

{noformat}0x000001f850160ab6 (Mono JIT Code) (wrapper managed-to-native) System.Buffer:InternalMemcpy (byte*,byte*,int)
0x000001f8507b8cfb (Mono JIT Code) System.Buffer:Memcpy (byte*,byte*,int)
0x000001f850160983 (Mono JIT Code) string:memcpy (byte*,byte*,int)
0x000001f8431c4deb (Mono JIT Code) [CrashTest.cs:12] CrashTest:Start ()
0x000001f850033738 (Mono JIT Code) (wrapper runtime-invoke) object:runtime_invoke_void__this__ (object,intptr,intptr,intptr){noformat}

  1. Resolution Note (fix version 2022.1.16f1):

    Fixed crash that would occur when assigning a large struct to the field of a null object.

  2. Resolution Note (fix version 2021.3.9f1):

    Fixed crash that would occur when assigning a large struct to the field of a null object.

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