1 files changed, 25 insertions, 0 deletions
diff --git a/tests/untried/neg-with-implicits/macro-blackbox-dynamic-materialization/Macros_1.scala b/tests/untried/neg-with-implicits/macro-blackbox-dynamic-materialization/Macros_1.scala
new file mode 100644
index 000000000..16a379ea5
--- /dev/null
+++ b/tests/untried/neg-with-implicits/macro-blackbox-dynamic-materialization/Macros_1.scala
@@ -0,0 +1,25 @@
+import scala.reflect.macros.blackbox.Context
+import scala.language.experimental.macros
+
+trait Foo[T]
+
+class C1(val x: Int)
+class C2(val x: String)
+
+trait LowPriority {
+  implicit def lessSpecific[T]: Foo[T] = null
+}
+
+object Foo extends LowPriority {
+  implicit def moreSpecific[T]: Foo[T] = macro Macros.impl[T]
+}
+
+object Macros {
+  def impl[T: c.WeakTypeTag](c: Context) = {
+    import c.universe._
+    val tpe = weakTypeOf[T]
+    if (tpe.members.exists(_.info =:= typeOf[Int]))
+      c.abort(c.enclosingPosition, "I don't like classes that contain integers")
+    q"new Foo[$tpe]{ override def toString = ${tpe.toString} }"
+  }
+}