SI-8046 Fix baseTypeSeq in presence of type aliases

1 files changed, 19 insertions, 0 deletions

diff --git a/test/pending/pos/t8046c.scala b/test/pending/pos/t8046c.scala
new file mode 100644
index 0000000000..9a8616828d
--- /dev/null
+++ b/test/pending/pos/t8046c.scala
@@ -0,0 +1,19 @@
+trait One {
+  type Op[A]
+  type Alias[A] = Op[A]
+}
+
+trait Three extends One {
+  trait Op[A] extends (A => A)
+ 
+  def f1(f: Op[Int])            = f(5)
+  def f2(f: Alias[Int])         = f(5)
+  def f3[T <: Op[Int]](f: T)    = f(5)
+  def f4[T <: Alias[Int]](f: T) = f(5)
+  // ./a.scala:12: error: type mismatch;
+  //  found   : Int(5)
+  //  required: T1
+  //   def f4[T <: Alias[Int]](f: T) = f(5)
+  //                                     ^
+}
+