$ cat test.scala

package scala {
  trait Function1[@specialized(scala.Long) -T1, @specialized(scala.Unit) +R] extends AnyRef { self =>
    def apply(v1: T1): R
  }
}

package Test {
  abstract class SL[A] extends Function1[Int, A] { self =>
    def apply(idx: Int): A
    def view = new Function1[Int, A] {
      def apply(idx: Int) = self.apply(idx)
    }
  }
}

$ rm -rf classes/* && build/quick/bin/scalac test.scala -d classes -Yclosure-elim -Yinline

$ java -cp classes Test.SL\$\$anon\$1
Exception in thread "main" java.lang.VerifyError: (class: Test/SL$$anon$1, method: apply$mcVJ$sp signature: (J)V) Expecting to find integer on stack
Could not find the main class: Test.SL$$anon$1.  Program will exit.