1 files changed, 7 insertions, 0 deletions
diff --git a/test/files/pos/t3960.scala b/test/files/pos/t3960.scala
new file mode 100644
index 0000000000..5c658e9fbc
--- /dev/null
+++ b/test/files/pos/t3960.scala
@@ -0,0 +1,7 @@
+class A {
+  class C[x]
+  val cs = new scala.collection.mutable.HashMap[C[_], Int]
+  def c: C[_] = sys.error("")
+  val eval: C[_] = c
+  cs(c) += 1
+}