Index: tests/concurrent/.expect/mainError.txt
===================================================================
--- tests/concurrent/.expect/mainError.txt	(revision 13fdf866f7f954372ac020e1f9c2e07c7f3eb131)
+++ tests/concurrent/.expect/mainError.txt	(revision 13fdf866f7f954372ac020e1f9c2e07c7f3eb131)
@@ -0,0 +1,11 @@
+concurrent/mainError.cfa:1:1 error: thread keyword requires threads to be in scope, add #include <thread.hfa>
+thread Test: with body 1
+
+concurrent/mainError.cfa:2:1 error: thread keyword requires threads to be in scope, add #include <thread.hfa>
+main: function
+... with parameters
+  reference to instance of struct Test with body 1
+... returning nothing
+... with body
+  CompoundStmt
+
Index: tests/concurrent/mainError.cfa
===================================================================
--- tests/concurrent/mainError.cfa	(revision 13fdf866f7f954372ac020e1f9c2e07c7f3eb131)
+++ tests/concurrent/mainError.cfa	(revision 13fdf866f7f954372ac020e1f9c2e07c7f3eb131)
@@ -0,0 +1,2 @@
+thread Test {};
+void main(Test&) {}