Index: tests/concurrency/waitfor/barge.cfa
===================================================================
--- tests/concurrency/waitfor/barge.cfa	(revision 2853d6fb02befcb65b90aa2717750f5b7e57ad95)
+++ tests/concurrency/waitfor/barge.cfa	(revision 10b5970650e2ff3d8e757dd5c91889d466e44fe0)
@@ -30,5 +30,5 @@
 }
 
-void ^?{} ( global_t & mutex this ) {}
+void ^?{} ( global_t & mutex ) {}
 
 global_t global;
@@ -40,5 +40,5 @@
 
 thread barger_t {};
-void main( barger_t & this ) {
+void main( barger_t & ) {
 	yield();
 	while( barge( global ) ) { yield(random( 10 )); }
@@ -56,5 +56,5 @@
 
 thread caller_t {};
-void main( caller_t & this ) {
+void main( caller_t & ) {
 	while( do_call(global) ) { yield(random( 10 )); }
 }
@@ -78,5 +78,5 @@
 
 thread waiter_t{};
-void main( waiter_t & this ) {
+void main( waiter_t & ) {
 	do_wait(global);
 }
Index: tests/concurrency/waitfor/statment.cfa
===================================================================
--- tests/concurrency/waitfor/statment.cfa	(revision 2853d6fb02befcb65b90aa2717750f5b7e57ad95)
+++ tests/concurrency/waitfor/statment.cfa	(revision 10b5970650e2ff3d8e757dd5c91889d466e44fe0)
@@ -89,5 +89,5 @@
 }
 
-void main( caller & this ) {
+void main( caller & ) {
 	int index = get_index( m );
 	while( !start ) yield();
@@ -122,5 +122,5 @@
 thread waiter{};
 
-void main( waiter & this ) {
+void main( waiter & ) {
 	do_wait( m );
 }
Index: tests/concurrency/waitfor/when.cfa
===================================================================
--- tests/concurrency/waitfor/when.cfa	(revision 2853d6fb02befcb65b90aa2717750f5b7e57ad95)
+++ tests/concurrency/waitfor/when.cfa	(revision 10b5970650e2ff3d8e757dd5c91889d466e44fe0)
@@ -39,5 +39,5 @@
 
 thread caller_t{};
-void main( caller_t & this ) {
+void main( caller_t & ) {
 	while( true ) {
 		rand_yield();
@@ -76,5 +76,5 @@
 
 thread arbiter_t{};
-void main( arbiter_t & this ) {
+void main( arbiter_t & ) {
 	arbiter( global );
 }