I'm having a mismatch between Kotlin and IntelliJ ...

# intellij

[jeggy]

I'm having a mismatch between Kotlin and IntelliJ

I'm getting this warning when compiling:

Smart cast to 'ImageData' is impossible, because 'selectedIcon' is a property that has an open or custom getter.

But Intellij says:

Unnecessary non-null assertion (!!) on a non-null receiver of type 'ImageData'.

I understand that it's IntelliJ that is reporting it incorrectly. So how can I fix my IntelliJ, so it does not suggest to remove the !!?

[bod]

are you in K2 mode ?

[jeggy]

no

[jeggy]

or not sure actually. I'm on Kotlin 2.1.20 and whatever that defaults to

[bod]

Screenshot 2025-07-30 at 14.06.42.png

[jeggy]

I disabled it (and restarted IntelliJ). But IntelliJ still suggest to remove it.
> Unnecessary non-null assertion (!!) on a non-null receiver of type ImageData

[bod]

My guess was that it wasn't enabled actually 😅 but yeah it was just a hunch. It may be a bug then, I suggest you open a ticket on YouTrack

[jeggy]

Will open a bug then 👍

[jeggy]

found out it was a gradle issue.
it was IntelliJ that was correct and not gradle

[jeggy]

the property is defined as val . so this issue of it being open is not relevant

[bod]

I guess you mean a compiler issue (gradle is not relevant here)

[jeggy]

I only got Smart cast to 'ImageData' is impossible, because 'selectedIcon' is a property that has an open or custom getter. when executed ./gradlew compileKotlin, but when I ran it with ./gradlew compileKotlin --rerun-tasks it didn't fail

[bod]

oooohh it might have been a gradle cache issue indeed then 👍