1 files changed, 11 insertions, 0 deletions
diff --git a/test/files/pos/t5178.scala b/test/files/pos/t5178.scala
new file mode 100644
index 0000000000..26c008d66f
--- /dev/null
+++ b/test/files/pos/t5178.scala
@@ -0,0 +1,11 @@
+abstract class FileOps {
+  def withLock[R](start: Long = 0): Option[R]
+}
+
+trait DefaultFileOps {
+  self: DefaultPath =>
+  
+  override def withLock[R](start: Long = 5): Option[R] = None
+}
+
+class DefaultPath extends FileOps with DefaultFileOps { }