Add another test case

Author: odersky

tests/pos/harmonize.scala

@@ -23,6 +23,12 @@ object Test {
 
     val xs = List(1.0, n, 'c')
     val ys: List[Double] = xs
+
+    def gen[T](xs: T*): T = ???
+    def gen(xs: String*): String = ???
+
+    val c = gen(1.0, 'A', n)
+    val d: Double = c
   }
 
 }