Index: tests/concurrent/park/start_parked.cfa
===================================================================
--- tests/concurrent/park/start_parked.cfa	(revision 2649ff9a75bc80845220784ad67e9fd55f1df612)
+++ tests/concurrent/park/start_parked.cfa	(revision 2649ff9a75bc80845220784ad67e9fd55f1df612)
@@ -0,0 +1,13 @@
+#include <thread.hfa>
+
+thread Parker {};
+void main( Parker & ) {
+      park( __cfaabi_dbg_ctx );
+}
+
+int main() {
+      for(1000) {
+            Parker parker;
+            unpark( parker __cfaabi_dbg_ctx2 );
+      }
+}