diff --git a/tests/pos/i6655.scala b/tests/pos/i6655.scala
new file mode 100644
index 000000000000..ec1e6d7cc559
--- /dev/null
+++ b/tests/pos/i6655.scala
@@ -0,0 +1,10 @@
+class Test {
+  def foo(): Unit = {
+    val x: String|Null = ???
+    if (x != null) {
+      val y = x.length
+    } else {
+      val y = x
+    }
+  }
+}