Add test to illustrate overloading problem.

Author: odersky

tests/pending/pos/overloaddefault.scala

@@ -0,0 +1,15 @@
+trait Scope
+class MScope extends Scope
+
+case class CI(pre: Int, decls: Scope) {
+  def derivedCI(pre: Int) = new CI(pre, decls)
+  def derivedCI(pre: Int = this.pre, decls: Scope = this.decls) = new CI(pre, decls)
+}
+
+object Test {
+  def ci = new CI(1, new MScope)
+  val decls1 = new MScope
+  ci.derivedCI(2, decls = decls1)
+  ci.derivedCI(pre = 2)
+  ci.derivedCI(decls = decls1)
+}