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kotlin-fork/compiler/testData/diagnostics/tests/nullabilityAndSmartCasts/kt1778.fir.kt
T
Nikolay Lunyak cd3202ddd4 [FIR] Map platform types to Kotlin for equality checks
During the DM it was decided to support
such comparisons, if I remember correctly.

^KT-62646
2024-03-08 15:37:44 +00:00

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// !CHECK_TYPE
// WITH_EXTENDED_CHECKERS
//KT-1778 Automatically cast error
package kt1778
import checkSubtype
fun main(args : Array<String>) {
val x = checkSubtype<Any>(args[0])
if(x is <!PLATFORM_CLASS_MAPPED_TO_KOTLIN!>java.lang.CharSequence<!>) {
if ("a" == x) x.length else x.length() // OK
if ("a" == x || "b" == x) x.length else x.length() // < THEN ERROR
if ("a" == x && "a" == x) x.length else x.length() // < ELSE ERROR
}
}