SI-5390 Detect forward reference of case class apply

Refchecks performs (among others) two tasks at once:

  - detecting forward references
  - translating `qual.Case(...)` to `new qual.Case(...)`

As is often the case with such multi-tasking tree traversals,
completion of one task precluded the other.

1 files changed, 10 insertions, 0 deletions

diff --git a/test/files/neg/t5390d.scala b/test/files/neg/t5390d.scala
new file mode 100644
index 0000000000..7a2671b443
--- /dev/null
+++ b/test/files/neg/t5390d.scala
@@ -0,0 +1,10 @@
+class A {
+  case class B(s: String)
+}
+
+object X {
+  def foo {
+    val b = a.B.toString
+    val a = new A
+  }
+}
\ No newline at end of file