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Won't Fix
Votes
0
Found in
2017.4.6f1
Issue ID
1070158
Regression
No
Unity Editor crashes when passing half of the Emoji to native C++ code
To reproduce:
1. Download attached project "utf16_surrogate.zip" and open in Unity
2. Open "surrogate" scene
3. Enter Play mode
Expected Result: Unity Editor successfully enters into the Play mode
Actual Result: Unity Editor crashes
Notes:
- This issue appears both on Windows and OSX
- It seems that this issue does not occur on Standalone
- When Unity Editor crashes there is no Stack Trace printed
Reproduced on Unity 2017.1.5f1, 2017.2.3p3, 2017.3.2f1, 2017.4.9f1, 2018.1.9f1, 2018.2.3f1 and 2018.3.0a9
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Resolution Note:
IL2CPP marshals managed strings from Utf16 to Utf8 when calling native functions that take char*. Splitting up a surrogate pair creates an invalid sequence that will crash our underlying string conversion code. Testing each character for validity when marshaling in order to fail more gracefully and provide a better error message would slow down marshaling unacceptably for all string marshaling cases, so we have elected to not fix this issue since it is not a common problem.