SI-6051 Test case, the issue seems to be fixed.

Author: lrytz

test/files/pos/t6051.scala

@@ -0,0 +1,19 @@
+object Foo1 {
+  def foo(x: Int, y: Int = 10) = x*y
+  lazy val y = foo(x = 20)
+}
+
+object Foo2 {
+  def foo(x: Int, y: Int = 10) = x*y
+  val y = foo(x = 20)
+}
+
+object Foo3 {
+  def foo(x: Int, y: Int = 10) = x*y
+  def y = foo(x = 20)
+}
+
+object Foo4 {
+  def foo(x: Int, y: Int = 10) = x*y
+  var y = foo(x = 20)
+}