SI-8046 Fix baseTypeSeq in presence of type aliases

1 files changed, 16 insertions, 0 deletions

diff --git a/test/files/pos/t8046b.scala b/test/files/pos/t8046b.scala
new file mode 100644
index 0000000000..45b99fd7e0
--- /dev/null
+++ b/test/files/pos/t8046b.scala
@@ -0,0 +1,16 @@
+trait One {
+  type Op[A]
+  type Alias = Op[Int]
+}
+ 
+trait Two extends One {
+  trait Op[A] extends M[A]
+  //(a: Alias) => a.value.toChar               // okay
+                                             // (=> A).asSeenFrom(a.type, trait M): => Int
+  class View2 extends Alias { value.toChar } // toChar is not a member of type parameter A
+                                             // (=> A).asSeenFrom(View2.this.type, trait M): => A
+  
+  // override type Alias = Op[Int]           // works with this
+}
+
+trait M[A] { def value: A = sys.error("") }