Support await in throws.

Also support AsyncId.async[Nothing], which was triggering a NPE
in the generated `null.asInstanceOf[Nothing]`.

1 files changed, 10 insertions, 0 deletions

diff --git a/src/test/scala/scala/async/run/anf/AnfTransformSpec.scala b/src/test/scala/scala/async/run/anf/AnfTransformSpec.scala
index e389a19..ed9f506 100644
--- a/src/test/scala/scala/async/run/anf/AnfTransformSpec.scala
+++ b/src/test/scala/scala/async/run/anf/AnfTransformSpec.scala
@@ -348,4 +348,14 @@ class AnfTransformSpec {
       foo(await(0), List(id(1), id(2), id(3)): _*)
     } mustBe (List(1, 2, 3))
   }
+
+  @Test
+  def awaitInThrow() {
+    import _root_.scala.async.internal.AsyncId.{async, await}
+    intercept[Exception](
+      async {
+        throw new Exception("msg: " + await(0))
+      }
+    ).getMessage mustBe "msg: 0"
+  }
 }