kotlin-fork/compiler/testData/diagnostics/tests/regressions/kt571.kt

// FIR_IDENTICAL
//KT-571 Type inference failed
fun <T, R> let(t : T, body : (T) -> R) = body(t)
private fun double(d : Int) : Int = let(d * 2) {it / 10 + it * 2 % 10}