``` fun main() { val x = Thing(42) when(x)...

# announcements

[LastExceed]

fun main() {
    val x = Thing(42)
    when(x) {
        Thing(42) -> {
            println("foo")
        }
        else -> {
            println("bar")
        }
    }
}

inline class Thing(val value: Int)

the output is foo
IntelliJ suggests inlining x, like so:

fun main() {
    when(val x = Thing(42)) {
        Thing(42) -> {
            println("foo")
        }
        else -> {
            println("bar")
        }
    }
}

inline class Thing(val value: Int)

however now it outputs bar. why is that?

[karelpeeters]

That has to be a compiler bug I think, report on youtrack.

[Eugen Martynov]

Can you check decompiled code?

[Eugen Martynov]

I wonder if it is int or Integer after inlining

[wasyl]

Can you declare type for the inlined val? Would val x: Thing = Thing(42) work as expected?

[streetsofboston]

For some reason, it looks like one example is auto-boxed into a 'Thing' and the other example remains inlined, like an 'Int'. No idea why.... Looks like a bug... or at least super confusing...