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kotlinlang

Hi! I found a some strange behaviour, and I don’t understand why its happening.
Maybe someone can explain it. Or maybe it’s a bug, I don’t know…

It’s a working example:
<https://pl.kotl.in/ocRtqR-cQ?theme=darcula&readOnly=true>

It’s not:
<https://pl.kotl.in/qXhhA_gTe?theme=darcula&readOnly=true>

All difference between them that I have one ULong property instead of Long and Kotlin throws an error in Kotlin Playground:
```Exception in thread "main" java.lang.ClassFormatError: Too many arguments in method signature in class file NotWorkingClass
 at java.lang.ClassLoader.defineClass1 (:-2) 
 at java.lang.ClassLoader.defineClass (:-1) 
 at java.security.SecureClassLoader.defineClass (:-1) ```
It happens in real app too, but with a different error, smth like this `[0xFFFFFFFF] invalid arg count (0) in range invoke`

Created <https://youtrack.jetbrains.com/issue/KT-65756|issue>, it’s a a valid bug