Merge pull request scala#590 from retronym/ticket/3899

Pending test for SI-3899.

Author: Adriaan Moors

test/pending/run/t3899.check

@@ -0,0 +1,4 @@
+a,b
+a,b
+a,b
+a,b

test/pending/run/t3899/Base_1.java

@@ -0,0 +1,5 @@
+public class Base_1 {
+	public String[] varargs1(String... as) {
+	  return as;
+	}
+}

test/pending/run/t3899/Derived_2.scala

@@ -0,0 +1,30 @@
+trait T extends Base_1 {
+	def t1(as: String*): Array[String] = {
+		varargs1(as: _*)
+	}
+	def t2(as: String*): Array[String] = {
+    // This is the bug reported in the ticket.
+		super.varargs1(as: _*)
+	}
+}
+
+class C extends Base_1 {
+	def c1(as: String*): Array[String] = {
+		varargs1(as: _*)
+	}
+	def c2(as: String*): Array[String] = {
+		super.varargs1(as: _*)
+	}
+}
+
+
+object Test extends App {
+	val t = new T {}
+	println(t.t1("a", "b").mkString(","))
+	println(t.t2("a", "b").mkString(","))
+
+	val c = new C {}
+	println(c.c1("a", "b").mkString(","))
+	println(c.c2("a", "b").mkString(","))
+
+}