1 files changed, 9 insertions, 0 deletions
diff --git a/tests/untried/neg/t7872.scala b/tests/untried/neg/t7872.scala
new file mode 100644
index 000000000..66d22a071
--- /dev/null
+++ b/tests/untried/neg/t7872.scala
@@ -0,0 +1,9 @@
+trait Cov[+A]
+trait Inv[-A]
+
+object varianceExploit {  
+  type l[-a] = Cov[a]
+  type x = {type l[-a] = Cov[a]}
+  def foo[M[_]] = ()
+  foo[({type l[+a] = Inv[a]})#l]
+}