// ISSUE: KT-63840
// CHECK_TYPE_WITH_EXACT

fun test() {
    val buildee = build {
        when {
            true -> replaceTypeVariable(TargetType())
            else -> DifferentType()
        }
    }
    // exact type equality check — turns unexpected compile-time behavior into red code
    // considered to be non-user-reproducible code for the purposes of these tests
    checkExactType<Buildee<TargetType>>(buildee)
}




class TargetType
class DifferentType

class Buildee<TV> {
    fun replaceTypeVariable(value: TV): TV { val temp = storage; storage = value; return temp }
    private var storage: TV = null!!
}

fun <PTV> build(instructions: Buildee<PTV>.() -> Unit): Buildee<PTV> {
    return Buildee<PTV>().apply(instructions)
}