Add a test to interrogate the expanded tree.

 - checks that only one function is synthesized
 - checks the set of vars created (TODO minimize these)
 - use x$1 rather than x1 for the freshened names for lifted vars.
 - make execContext a val, not a var.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/main/scala/scala/async/Async.scala b/src/main/scala/scala/async/Async.scala
index 9f43b0b..4f7fa01 100644
--- a/src/main/scala/scala/async/Async.scala
+++ b/src/main/scala/scala/async/Async.scala
@@ -139,7 +139,7 @@ abstract class AsyncBase {
       // Initialize the state
       var state$async = 0
       // Resolve the execution context
-      var execContext$async = futureSystemOps.execContext.splice
+      val execContext$async = futureSystemOps.execContext.splice
       var onCompleteHandler$async: util.Try[Any] => Unit = null
 
       // Spawn a future to: