2 files changed, 30 insertions, 0 deletions
diff --git a/tests/disabled/macro/run/t8104/Macros_1.scala b/tests/disabled/macro/run/t8104/Macros_1.scala
new file mode 100644
index 000000000..e135bd807
--- /dev/null
+++ b/tests/disabled/macro/run/t8104/Macros_1.scala
@@ -0,0 +1,11 @@
+import scala.reflect.macros.whitebox.Context
+
+object Macros {
+  def impl[T](c: Context)(implicit T: c.WeakTypeTag[T]) = {
+    import c.universe._
+    import definitions._
+    val fields = T.tpe.decls.toList.collect{ case x: TermSymbol if x.isVal && x.isCaseAccessor => x }
+    val Repr = appliedType(TupleClass(fields.length).asType.toType, fields.map(_.info))
+    q"new Generic[$T]{ type Repr = $Repr }"
+  }
+}
+\ No newline at end of file
diff --git a/tests/disabled/macro/run/t8104/Test_2.scala b/tests/disabled/macro/run/t8104/Test_2.scala
new file mode 100644
index 000000000..4e97cdf9d
--- /dev/null
+++ b/tests/disabled/macro/run/t8104/Test_2.scala
@@ -0,0 +1,19 @@
+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, Repr]: Generic.Aux[T, Repr] = macro Macros.impl[T]
+}
+
+object Test extends dotty.runtime.LegacyApp {
+  case class C(x: Int, y: Int)
+
+  import scala.reflect.runtime.universe._
+  def reprify[T, Repr](x: T)(implicit generic: Generic.Aux[T, Repr], tag: WeakTypeTag[Repr]) = {
+    println(tag)
+    println(tag.tpe.typeSymbol.info)
+  }
+  reprify(C(40, 2))
+
+  implicitly[Generic.Aux[C, (Int, Int)]]
+}