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kotlinlang

I'm trying out Kotlin 2.0.0-RC1 for the first time and getting:

`e: KotlinTest.kt Argument type mismatch: actual type is 'com.mypackage.JavaClass&lt;com.mypackage.OtherJavaClass&gt;', but 'com.mypackage.JavaClass&lt;com.mypackage.OtherJavaClass?&gt;' was expected.`

Compiles successfully with 1.9.23. I'm presuming I'll have to provide more details or a reproducer, but I figured I'd start by posting the error in case anyone recognizes it as a known issue.

Seems like it might be some sort of issue with an invariant type parameter in Java vs. Kotlin nullability/platform type inference. I'm not familiar with how invariant type parameters and platform types interoperate.

In my test the argument in question was a:

`val javaClass: JavaClass&lt;OtherJavaClass&gt; = mockk()`

I changed it to:

`val javaClass: JavaClass&lt;OtherJavaClass?&gt; = mockk()`

...and everything compiles now.

<@U8LBKF6AJ>, can you please share a reproducer if possible? Thank you in advance!