Why can not use hex Int in kotlin method intArrayOf?

I found a strange problem in Kotlin.

I can assign a hexadecimal integer to an Int variable, just like:

private val a = 0xFFFF0000    //works good

but I can't use this hex integer in intArrayOf:

private val array: IntArray = intArrayOf(0xFFFF0000)

IDE prompts: the integer literal does not conform to the expected type Int.

Does anyone know why? and is there anyway to use 0xFFFF0000 in intArrayof?

While 0x7FFF_FFFF is of typ Int, hex literals starting from 0x8000_0000 are of type Long.

You need 32 bit to store 0x8000_0000. While Int is signed, the value is (the least one, that is) too big to be stored in an Int.

You can use negative hex literals though

val a: IntArray = intArrayOf(-0x1_0000)

If you are on the JVM, you can check with

a.forEach { println(Integer.toHexString(it)) }
assert(0x7FFF_FFFF == Integer.MAX_VALUE)
assert(-0x8000_0000 == Integer.MIN_VALUE)