2 files changed, 29 insertions, 0 deletions
diff --git a/test/files/neg/t2779.check b/test/files/neg/t2779.check
new file mode 100644
index 0000000000..4f94a780a1
--- /dev/null
+++ b/test/files/neg/t2779.check
@@ -0,0 +1,4 @@
+t2779.scala:16: error: method f is defined twice
+    override def f = List(M1)
+                 ^
+one error found
diff --git a/test/files/neg/t2779.scala b/test/files/neg/t2779.scala
new file mode 100755
index 0000000000..d025055aa0
--- /dev/null
+++ b/test/files/neg/t2779.scala
@@ -0,0 +1,25 @@
+abstract class M
+{
+    def f: List[M] = Nil
+}
+
+object M1 extends M
+
+object M2 extends M
+{
+    override def f = List(M1)
+}
+
+object M3 extends M
+{
+    override def f = List(M1)
+    override def f = List(M1)
+}
+
+object M4 extends M
+{
+    override def f = List(
+        M3,
+        M2
+    )
+}