Index: tests/concurrency/channels/ping_pong.cfa
===================================================================
--- tests/concurrency/channels/ping_pong.cfa	(revision 50be8af55788ecaebbb85845d1e11234cd6a5cb6)
+++ tests/concurrency/channels/ping_pong.cfa	(revision d84f2ae33ff967a0dcd536586c44e74523d30775)
@@ -16,5 +16,5 @@
 
 thread Pong {};
-void main(Pong & this) {
+void main(Pong &) {
     try {
         for ( ;; ) {
@@ -27,5 +27,5 @@
 
 thread Ping {};
-void main(Ping & this) {
+void main(Ping &) {
     try {
         for ( ;; ) {
@@ -39,5 +39,5 @@
 
 
-int main( int argc, char * argv[] ) {
+int main() {
     sout | "start";
     processor proc[1];