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class NoAbstract
class TwoAbstract { def ap(a: Int): Int; def pa(a: Int): Int }
class Base // check that the super class constructor isn't considered.
class NoEmptyConstructor(a: Int) extends Base { def this(a: String) = this(0); def ap(a: Int): Int }
class OneEmptyConstructor() { def this(a: Int) = this(); def ap(a: Int): Int }
class OneEmptySecondaryConstructor(a: Int) { def this() = this(0); def ap(a: Int): Int }
class MultipleConstructorLists()() { def ap(a: Int): Int }
class MultipleMethodLists()() { def ap(a: Int)(): Int }
class ImplicitConstructorParam()(implicit a: String) { def ap(a: Int): Int }
class ImplicitMethodParam() { def ap(a: Int)(implicit b: String): Int }
class PolyClass[T] { def ap(a: T): T }
class PolyMethod { def ap[T](a: T): T }
class OneAbstract { def ap(a: Any): Any }
class DerivedOneAbstract extends OneAbstract
object Test {
implicit val s: String = ""
type NonClassType = DerivedOneAbstract with OneAbstract
(() => 0) : NoAbstract
((x: Int) => 0): TwoAbstract
((x: Int) => 0): DerivedOneAbstract // okay
((x: Int) => 0): NonClassType // "class type required". I think we should avoid SAM translation here.
((x: Int) => 0): NoEmptyConstructor
((x: Int) => 0): OneEmptyConstructor // okay
((x: Int) => 0): OneEmptySecondaryConstructor // derived class must have an empty *primary* to call.
((x: Int) => 0): MultipleConstructorLists
((x: Int) => 0): MultipleMethodLists
((x: Int) => 0): ImplicitConstructorParam
((x: Int) => 0): ImplicitMethodParam
((x: Int) => 0): PolyClass[Int] // okay
((x: Int) => 0): PolyMethod
}
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