Fixes #1477 by requiring that abstract types wi...

Fixes #1477 by requiring that abstract types with non-volatile upper
bounds cannot be overridden by volatile types.

1 files changed, 3 insertions, 0 deletions

diff --git a/test/files/neg/t2179.scala b/test/files/neg/t2179.scala
new file mode 100755
index 0000000000..89e22b6e2a
--- /dev/null
+++ b/test/files/neg/t2179.scala
@@ -0,0 +1,3 @@
+object Test {
+  (Nil:List[List[Double]]).reduceLeft((_: Any, _: Any) => Nil.indices.map(_ => 0d))
+}