1 files changed, 20 insertions, 0 deletions
diff --git a/test/files/neg/t8104a/Test_2.scala b/test/files/neg/t8104a/Test_2.scala
new file mode 100644
index 0000000000..f601fc3570
--- /dev/null
+++ b/test/files/neg/t8104a/Test_2.scala
@@ -0,0 +1,20 @@
+trait Generic[T] { type Repr }
+object Generic {
+  type Aux[T, Repr0] = Generic[T] { type Repr = Repr0 }
+  import scala.language.experimental.macros
+  implicit def materializeGeneric[T]: Generic[T] = macro Macros.impl[T]
+}
+
+object Test extends App {
+  case class C(x: Int, y: Int)
+
+  def reprify[T, Repr](x: T)(implicit generic: Generic.Aux[T, Repr]) = ???
+  reprify(C(40, 2))
+
+  // this is a compilation error at the moment as explained in SI-8104
+  // because matchesPt in implicit search says that depoly(<type of materializeGeneric>) isn't a subtype of Generic.Aux[C, (Int, Int)]
+  // which is rightfully so, because depoly only replaces type parameters, not type members with wildcard types
+  // however in the future we might want to relax the matchesPt check, so this might start compiling
+  // therefore, if you've broken this test, then you should be happy, because most likely you've just enabled an interesting use case!
+  implicitly[Generic.Aux[C, (Int, Int)]]
+}