Fix for SI-6264, crash in checkCheckable.

The classic fail of assuming you will only receive a
specific subclass of Type.

1 files changed, 6 insertions, 0 deletions

diff --git a/test/files/neg/t6264.scala b/test/files/neg/t6264.scala
new file mode 100644
index 0000000000..dc3b727934
--- /dev/null
+++ b/test/files/neg/t6264.scala
@@ -0,0 +1,6 @@
+class Foo {
+  def foo(x: AnyRef): Unit = {
+    x.isInstanceOf[Tuple2[_, Tuple1[_]]]
+    ()
+  }
+}