compiler/testData/codegen/box/strings/singleConcatNullable.kt - third_party/github/JetBrains/kotlin - Git at Google

 fun f(s: String?): String {
     return "$s"
 }

 fun box(): String {
     if (f(null) != "null") return "Fail"
     return "OK"
 }
	fun f(s: String?): String {
	return "$s"
	}

	fun box(): String {
	if (f(null) != "null") return "Fail"
	return "OK"
	}