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Fixed in 2020.1.X

Fixed in 2018.4.X, 2019.3.X

Votes

0

Found in

2018.4

2019.2.17f1

2020.1

Issue ID

1210416

Regression

No

Crash on inspecting Dictionary contents, which include an enum, when debugging in Visual Studio

Mono

-

Steps to reproduce:
1. Open the attached project
2. Open "SampleScene" Scene
3. Open the "test.cs" script in Visual Studio and set a breakpoint inside Update method
4. Attach the VS debugger to Unity
5. Enter Play mode
6. Attempt to inspect testDictionary contents

Reproducible with: 2018.4.16f1, 2019.2.20f1, 2019.3.0f6, 2020.1.0a21
Couldn't test with: 2017.4 since Visual Studio Unity debugging is not available in this stream

Last line in the Editor log before the crash (not always produced):

  • Assertion: should not be reached at ..\mono\mini\debugger-agent.c:7753

Notes:
- From the crash dumps it seems that the crash comes from abort.cpp which is a Windows file
- The crash doesn't reproduce when inspecting a List which contains the same enum
- The crash does reproduce independently of if the enum is used as a value or a key

  1. Resolution Note (fix version 2020.1):

    Managed debugger didn't handle the case where we are inspecting a generic struct and the field is an enumerator. This has been fixed in 2020.1.0a24

  2. Resolution Note (fix version 2019.3):

    Fixed in 2019.3.7f1

  3. Resolution Note (fix version 2018.4):

    Fixed in 2018.4.24f1

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