kotlin-fork/compiler/testData/diagnostics/testsWithStdLib/builderInference/buildListToUpperBound.kt

// WITH_STDLIB
// !LANGUAGE: -ForbidInferringPostponedTypeVariableIntoDeclaredUpperBound
// ISSUE: KT-50520

fun box(): String {
    <!INFERRED_INTO_DECLARED_UPPER_BOUNDS!>buildList<!> {
        val foo = { first() }
        add(0, foo)
    }
    return "OK"
}