kotlin-fork/compiler/testData/diagnostics/tests/inference/builderInference/kt47986_2.kt

// !RENDER_DIAGNOSTICS_FULL_TEXT
class Foo<K>

fun <K> buildFoo(builderAction: Foo<K>.() -> Unit): Foo<K> = Foo()

fun <L> Foo<L>.bar() {}

fun <K> id(x: K) = x

fun main() {
    val x = <!INFERRED_INTO_DECLARED_UPPER_BOUNDS!>buildFoo<!> { // can't infer
        val y = id(::bar)
    }
}