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Unity Editor silently crashes when calling a function inside a C++ DLL



To reproduce:

1. Download attached project “" and open in Unity
2. Open "SampleScene" scene
3. Enter to Play mode

Expected results: Unity Editor successfully enters to Play mode
Actual results: Unity Editor silently crashes

- This issue appears both on Windows and macOS
- Cannot check on Standalone because Build fails with Errors which are shared in Comments section
- User attached the C++ project "" which was used to produce the DLL

Reproduced on Unity 2017.4.0f1, 2017.4.20f2, 2018.3.7f1, 2019.1.0b5 and 2019.2.0a6

  1. Response avatar

    Resolution Note (fix version ):

    Unity does not support the use of managed C++ dlls. Mixed mode assemblies definitely won't work, and even pure C++/CLI assemblies are not tested or expected to work. Access to native code should be done via C APIs and PInvoke.

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