No error for ambiguous method call?

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I found this in the Kotlin spec 11.4 Choosing the most specific candidate from the overload candidate set (ref):

The most specific callable can forward itself to any other callable from the overload candidate set, while the opposite is not true.

public fun <T> CompletableDeferred(parent: Job? = null): CompletableDeferred<T>

is more specific than

public fun <T> CompletableDeferred(value: T): CompletableDeferred<T>

because you can pass a Job? as a T (here unbounded, so Any?), but not vice versa.

A compile-time error would only be raised if there are multiple functions with the same specificity:

If there are several functions with this property, none of them are the most specific and an overload resolution ambiguity error should be reported by the compiler.

I guess that makes sense. :slight_smile:

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